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Review

Effects of AntagomiRs on Different Lung Diseases in Human, Cellular, and Animal Models

by
Giuseppe Murdaca
1,*,
Alessandro Tonacci
2,
Simone Negrini
1,
Monica Greco
1,
Matteo Borro
1,
Francesco Puppo
1 and
Sebastiano Gangemi
3
1
Clinical Immunology Unit, Department of Internal Medicine, University of Genoa and Ospedale Policlinico San Martino, 16132 Genoa, Italy
2
Clinical Physiology Institute, National Research Council of Italy (IFC-CNR), 56124 Pisa, Italy
3
School and Operative Unit of Allergy and Clinical Immunology, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2019, 20(16), 3938; https://doi.org/10.3390/ijms20163938
Submission received: 30 June 2019 / Revised: 14 July 2019 / Accepted: 30 July 2019 / Published: 13 August 2019
(This article belongs to the Section Molecular Immunology)
Browse Figures
Versions Notes

Abstract

:
Introduction: MiRNAs have been shown to play a crucial role among lung cancer, pulmonary fibrosis, tuberculosis (TBC) infection, and bronchial hypersensitivity, thus including chronic obstructive pulmonary disease (COPD) and asthma. The oncogenic effect of several miRNAs has been recently ruled out. In order to act on miRNAs turnover, antagomiRs have been developed. Materials and methods: The systematic review was conducted under the PRISMA guidelines (registration number is: CRD42019134173). The PubMed database was searched between 1 January 2000 and 30 April 2019 under the following search strategy: (((antagomiR) OR (mirna antagonists) OR (mirna antagonist)) AND ((lung[MeSH Terms]) OR (“lung diseases”[MeSH Terms]))). We included original articles, published in English, whereas exclusion criteria included reviews, meta-analyses, single case reports, and studies published in a language other than English. Results and Conclusions: A total of 68 articles matching the inclusion criteria were retrieved. Overall, the use of antagomiR was seen to be efficient in downregulating the specific miRNA they are conceived for. The usefulness of antagomiRs was demonstrated in humans, animal models, and cell lines. To our best knowledge, this is the first article to encompass evidence regarding miRNAs and their respective antagomiRs in the lung, in order to provide readers a comprehensive review upon major lung disorders.

1. Introduction

MicroRNAs (miRNAs) are small molecules made of 21 nucleotides, which modulate several biological processes through post-transcriptional gene expression regulation [1]. In addition, many miRNA knockout strains have differential responses to models of several disorders such as neuronal, cardiac, pulmonary, vascular, renal, immunological, while some of them have altered susceptibility to fungal or bacterial infections, or altered propensity to develop tumors in cancer models [2]. In fact, miRNAs may control tumor development, both acting as tumor-promoting miRNAs (oncomiRNAs and metastamiRNAs) or as tumor suppressor miRNAs [3,4]. Furthermore, it was demonstrated that several human miRNAs are located in specific genomic sites which are involved in cancer [5]. During the last decade, researchers investigated miRNAs functioning and regulation. More recently, they focused on miRNA stability and turnover. Indeed, it was established that miRNAs are very dynamic molecules, presenting with a rapid turnover, which depends on their activation. On these bases, researchers investigated miRNA-induced silencing complex (miRISC) and Argonaute (AGO) proteins, which directly interact with miRNAs and are key factors in the assembly and function of miRISCs [1]. In order to act on miRNAs turnover, antagomiRs have been developed. They are a novel class of chemically engineered oligonucleotides, which are specific silencers of endogenous miRNAs. Specifically, two major molecular changings have been developed in order to increase chemical stability. Thus, including switching of the phosphodiester support with a phosphorothioate linkage between nucleotides or including a 2′O-methyl group. Additionally, antagomiRs with a cholesterol moiety are thought to promote cellular uptake [6]. Considering the complex role of miRNAs, these new molecules can be powerful tools to silence specific miRNAs in vivo and may represent a therapeutic strategy for silencing miRNAs in disease. Indeed, Krützfeldt et al. [7] conducted a study on mice in order to study the biological significance of miR-122, which is abundant in the liver. Analysis of gene expression of messenger RNA from antagomiR-treated animals disclosed that the 3′ untranslated areas of upregulated genes were extremely enriched with miR-122 recognition motives, while down-regulated genes were poor of these motives. Moreover, researchers found that cholesterol biosynthesis genes would have been modulated by miR-122; in fact, plasma cholesterol levels were reduced in antagomiR-122-treated mice. So far, evidence on antagomiR function has been collected on cellular, animal, and human models. Moreover, as described below, data in these three groups are often coherent. This in support of the hypothesis that miRNAs are molecular factors capable of influencing the expression of several disorders. To date, new studies regarding the use of miRNAs as therapeutic targets are ongoing, especially in the treatment of HCV infection, atherosclerosis, and oncologic diseases. As Gambari et al. [3] highlighted in their review, until now, several antagomiRs have been studied among oncologic diseases as therapeutic agents, both alone or in combination with standard drugs. The promising results explain the reason why these agents will improve the therapy of several tumors, such as gastric cancer, gliomas, and breast cancer [8,9,10]. Indeed, the role of miRNAs upon lung disorders has been extensively studied. MiRNAs have proven to play a crucial role among lung cancer, pulmonary fibrosis, tuberculosis (TBC) infection, and bronchial hypersensitivity, thus including chronic obstructive pulmonary disease (COPD) and asthma. The oncogenic effect of several miRNAs has been recently ruled out. Herein, a study of our group recently identified for the first time new mechanisms, supporting the crucial role of cigarette smoke-induced miR-21 expression in the amplification of inflammatory responses and in tumorigenesis processes within the airways [11]. COPD is a complex disease with a high rate of morbidity and mortality, especially in Western countries. Disease exacerbations and the associated hospitalizations often represent a considerable expense at a socio-economic level. Reduced lung function predicts mortality and is key to the diagnosis of COPD. Shrine et al. [12] conducted a genome-wide associated study in order to highlight new genetic mechanisms in order to improve future preventive and therapeutic strategies for COPD. More recently, many authors investigated miRNAs expression in COPD, noticing that wide networks composed of miRNA and messenger RNA (mRNAs) cooperate in COPD pathogenesis [13]. Moreover, Faiz et al. [14] investigated whether miRNA expression was modulated by inhaled corticosteroid (ICS) treatment and identified miR-320d as a novel mediator of ICS, regulating the pro-inflammatory response of the airway epithelium. Nowadays, among chronic inflammatory lung diseases, asthma is one of the most prevalent. Pathological mechanisms rely on activation of mast cells and eosinophils and dysregulation of Th 2 response. Asthmatic patients often have a strong genetic background, however recent studies demonstrated the role of epigenetic factors such as miRNAs [15]. Gold standard therapies for asthma control include inhaled β-agonists, both short and long acting, and steroids. On this background, Yu at al. [16] recently demonstrated that a specific miRNA, miR-16, may be used as a predictive biomarker of therapeutic response in asthma, thus, suggesting the role of miRNAs not only upon disease physiopathology but also upon drug response. MiRNAs have shown to have an effect also upon pulmonary arterial hypertension (PAH). PAH is a complex disease with different clinical manifestations and high genetic variability. ESC/ERS Guidelines outlined some of the most frequently involved genetic factors such as nuclear factor of activated T cells (NFAT), hypoxia-inducible factor 1α (HIF-1α), and signal transducer and activator of transcription 3 (STAT3) [17]. New research showed that miRNAs may play a crucial role in vascular remodeling, thus inhibiting or promoting pulmonary vascular resistance. Novel genetic studies have not only focused on chronic lung diseases. Acute respiratory distress syndrome (ARDS) and acute lung injury (ALI) are well defined clinical disorders caused by many clinical insults to the lung or because of predispositions to lung injury [18]. These conditions are characterized by massive lung inflammatory response and alveolar barrier damage, and supportive care combined with anti-inflammatory drugs and fluid replacement is fundamental. Currently, there is significant evidence endorsing the crucial role of miRNAs as a new class of gene regulators in ALI [19]. Although several goals have been reached among oncologic disorders, lung cancer still represents a high mortality disease. New discoveries on genetic factors and molecular pathways involved in the disease pathogenesis have been ruled out, however further steps are needed. Indeed, during the last years, miRNAs were found to be useful screening tools. Moreover, they can help clinicians to discriminate between primary lung tumors and lung metastases [20]. Finally, some studies demonstrated that specific miRNAs expression may predict lung tumor prognosis [21]. Most importantly, anti-miRNAs molecules, as antagomiRs, are now emerging as new therapeutic tools. Therefore, the goal of the actual research is to use miRNAs as therapeutic agents. Single miRNAs modulate various mRNA target expressions and may have wide impacts on various cellular processes. Therapies that target individual miRNAs can therefore have wider effects than traditional single-molecule/single-target methods. Indeed, changing numerous downstream objectives, miRNAs may improve the probability of adverse effects occurrence, especially when systemic drug delivery is used. Considering all these, biopharmaceutical companies are actually trying to use miRNAs as novel therapeutics. Indeed, two clinical studies have been launched for hepatitis C virus infection and advanced hepatocellular carcinoma [22,23] treatment. Nevertheless, no clinical trials have yet evaluated the impact on respiratory diseases of miRNA-targeted strategies. To our best knowledge, this is the first article to encompass evidence regarding miRNAs and their respective antagomiRs in the lung. In fact, several authors focused on miRNAs and their blocking agents with respect to different lung diseases such as asthma, COPD, and ARDS. Our work is the first to consider these molecules from a more extensive view, basing on the idea that several miRNAs play a crucial role in different respiratory disorders, thus sharing common biological processes in the lung. Moreover, our research included studies conducted on humans, animals, and cells. The aim of this three-level research was to confirm data from previous analysis and look for a correlation between these three categories. Thus, the idea of lung-specific miRNAs could be hypothesized. Furthermore, this concept would have impact not only on miRNAs knowledge, but also on antagomiR development. New molecules could be tested as more tailored therapeutic agents with less adverse effects.

2. Materials and Methods

The systematic review was conducted under the PRISMA guidelines (registration number is: CRD42019134173). The PubMed database was searched between 1 January 2000 and 30 April 2019 under the following search strategy: (((antagomiR) OR (mirna antagonists) OR (mirna antagonist)) AND ((lung[MeSH Terms]) OR (“lung diseases”[MeSH Terms]))). In this analysis, we included original articles, published in English, whereas exclusion criteria included reviews, meta-analyses, single case reports, and studies published in a language other than English [3,7,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71].

3. Results

According to the procedure previously described, we retrieved 68 articles matching the inclusion criteria (see the flowchart in Figure 1).
As shown in Table 1, Table 2, Table 3, Table 4 and Table 5, the vast majority of them included research carried out on cell lines and on animals, whereas only a few (20, corresponding to 29.4%) investigated the selected topic on humans. As expected, the condition most widely investigated was lung cancer (21/68), followed by pulmonary hypertension (7/68). All of the selected papers took into account the efficacy of the antagomiR treatment on the various diseases, whereas safety was rarely investigated (only in two cases out of 68). Overall, the use of antagomiR was seen to be efficient in downregulating the specific miRNA they are conceived for, with quite similar results either in vivo and in vitro and independently from the disease and the cell line they are used for. Overall, the usefulness of antagomiRs was demonstrated in humans, as well as in animals and cell lines without particular differences between those three aggregated groups. According to our results, the miRNA most frequently retrieved in lung conditions, therefore considered as “organ-specific,” although not “disease-specific,” appears to be miR-21, which has been found to be somewhat involved in lung conditions according to six of the selected papers [8,24,25,26,27,28]. However, miR-155 was also largely investigated and found to be involved in five works retrieved [29,30,31,32,72]. Further miRNAs frequently involved in lung conditions include miR-7 and miR-34, included in four articles, and miR-92 and miR-374, with three hits each. As evidenced, despite a handful miRNAs with multiple hits across the works included in our research, the only critical issue eventually identified for our approach concerns the right choice for the miRNA to be downregulated to achieve the expected result of the whole process. Indeed, even taking into account a single disease (e.g., lung cancer) on a similar population (e.g., on humans), a plethora of miRNAs with different functions can be identified as associated with the pathological process, therefore the selection of the right process to be blocked or, conversely, enhanced, is critical for good outcome of the process. Taking into account some specific disease categories, the first one to be analyzed, due to its numerical prevalence, was lung cancer.

3.1. Lung Cancer

All the works retrieved showed an excellent efficacy of antagomiRs in blocking the action of the respective miRNAs both in vivo (on both humans and animals) and in vitro. The studies, taken singularly, have shown a wide heterogeneity of the mechanisms investigated and challenged with a respective wide difference in terms of miRNAs studied and antagomiRs employed. This applies both analyzing separately single sub-groups of samples and investigating the whole amount of studies together, making it difficult to identify a “principal” microRNA to be challenged in this specific domain.

3.1.1. Humans

Eleven studies have specifically assessed the role of antagomiRs in human subjects with lung cancer, all of which demonstrating the usefulness of such compounds in blocking cancer-related cellular mechanisms, and even restraining the growth of tumors even in vivo (see, for example, He et al., 2019 [33] or Liu et al., 2011 [34]). The extreme heterogeneity of the miRNAs (and, consequently, antagomiRs) taken into account reveals the complexity of biological and cellular patterns of the lung cancer in vivo, suggesting the specific role of each compound for a given mechanism to be studied and tailored.

3.1.2. Animals

Ten works investigating lung cancer in animals were retrieved, all of which used mice models for this assessment. AntagomiRs were demonstrated to be extremely efficient in modulating cancer growth, preventing it in most cases (see, for example, anti-miR135b, in Lin et al., 2013 [73]; anti-miR19a, in Liu et al., 2011 [34]; anti-miR494, in Mao et al., 2015 [74]), or even promoting tumor growth when experimentally needed (see anti-miR30c, in McCann et al., 2019 [75]).

3.1.3. Cell lines

As expected, studies investigating lung cancer in cell lines are the vast majority with respect to the other sub-groups (20 studies were retrieved). Such studies confirmed in vitro the evidence arising in vivo, with antagomiRs able to modulate cancer growth depending on the outcome desired. Even on cell lines, the heterogeneity in terms of miRNAs investigated and antagomiRs employed was present, as already seen in humans and animals.

3.2. Bronchial Hypersensitivity

Under this category, studies dealing with asthma, COPD, allergic airway disease, airway hyper-responsiveness were included. Overall, eight studies were found, the majority of which investigating COPD (four studies) or asthma (three articles). Despite the heterogeneity in terms of miRNAs investigated, in this case promoted by both the relatively low number of studies retrieved and by the slightly different kind of diseases included in this category, miR-21 was included in several studies and its activity successfully challenged by its corresponding antagomiR. In summary, despite the differences in terms of category of samples studied and antagomiRs used, these compounds have demonstrated their usefulness also in this class of clinical conditions.

3.2.1. Humans

Only four works investigated such diseases in humans, all of which dealing with COPD. Overall, the studies highlighted a positive contribution of antagomiRs in decreasing the clinical symptoms of the disease. In some cases, these molecules have even shown to improve clinical outcomes with the support of other compounds, like protein kinase R (see Hsu et al. 2016 [76]).

3.2.2. Animals

Six studies were published on animal models, of which three investigated asthma, and one each COPD, airway disease, and airway hyper-responsiveness. All those studies took into account mice models, with miR-21 that was investigated in three out of the six works. Overall, the results were encouraging, with minor differences. Indeed, as observed by Collison et al. [24], just the inhibition of miR-145, but not miR-21 or let-7b, inhibited eosinophilic inflammation, mucus hypersecretion, TH2 cytokine production, and airway hyper-responsiveness, and also Plank et al. [30] on asthma observed that the use of the respective antagomiR (anti-miR-155-5p) reduced miR-155-5p expression, but failed to alter the disease phenotype.

3.2.3. Cell lines

Just three studies, all concerning COPD, were published on cell lines. All the three took into account different miRNAs and corresponding antagomiRs, but the results were seen to be overall positive, except the above reported work by Hsu et al. [76], which highlighted the pivotal importance of combining antagomiRs with protein kinase R to increase antiviral stress granules formation, induction of p300 and IFN-β in COPD primary bronchial epithelial cells.

3.3. Pulmonary Hypertension

Six studies investigated pulmonary hypertension in the literature retrieved, mostly dealing with animal models. Overall, the various antagomiRs used (as previously, the heterogeneity in terms of miRNAs studied was high) demonstrated a good efficacy in challenging the corresponding miRNA and in improving the biological outcome.

3.3.1. Humans

Only one work, published by Potus and colleagues [77] investigated the use of antagomiRs in pulmonary hypertension in humans, through biopsy specimens, with the surprising result that AntagomiR-126 in healthy CD31+ cells mimicked the PAH phenotype.

3.3.2. Animals

Six works, including that by Potus and colleagues [77] above reported, have used animal models to this aim. All of them used either mice or rat models, with complete heterogeneity on the miRNAs studied. Overall, the treatment with antagomiRs improved the outcome with respect to pulmonary hypertension, except in the study by Gubrij et al. [78], where AntagomiR-223 was efficient in reducing levels of miR-223 in pulmonary artery and lungs of rats as compared to controls, but failed to attenuate pulmonary hypertension.

3.3.3. Cell lines

Three articles also took into account cell lines on this specific topic. Despite using different compounds, tailoring different miRNAs, all the three works highlighted the positive role of antagomiRs in improving the outcome related to pulmonary hypertension, overall confirming the results obtained in vivo.

3.4. Lung Injury

In this category, acute lung injury and pulmonary inflammation were included. Overall, eight articles were included, four each for the two conditions above mentioned. No studies on human subjects were retrieved, while works dealing with animal models and cell lines were relatively numerous. As in other sub-groups and possibly due to the slight heterogeneity of the clinical conditions included in this category, just one miRNA was studied in more than one article even if taken into account in two studies by the same research team (miR-374a, investigated in Adyshev et al., [80,81]). Summarizing the results, even in this group of conditions, antagomiRs were extremely useful in improving the outcome both in vivo and in vitro, with no report of lack of efficacy in any of the studies retrieved.

3.4.1. Animals

Six studies were retrieved on animal models. As in most of the cases previously reported, all of them were performed on mice models. Three of them investigated miRNAs in lung injury, two of them in lung inflammation and one [79] in both.
As stated, all the antagomiRs employed successfully reduced the pathological changes, starting from cellular level, in vivo, without evidence of inefficacy on the samples studied.

3.4.2. Cell lines

Six studies were found also on cell lines. Three of them took into account lung inflammation, two lung injury and the one by Xie and colleagues [77] reported above both the conditions.
The results obtained confirmed the good reliability and efficacy of antagomiRs in improving the biomarkers of diseases in vitro, independently from the miRNA (and, therefore, the mechanism) tailored, with just one antagomiR, antagomiR-374a, that was used in more than one study [80,81], on lung injury and lung inflammation, respectively.

3.5. Other Conditions

In this category, several conditions, not matched by the groups above explained, were included, each of them featuring a small number of studies, and displaying positive results, overall.

3.5.1. Humans

Four studies were performed on humans, one each about lung cell dysfunction, lung fibrosis, HIV infection and substance abuse, and tuberculosis. Given the different etiopathological processes of such conditions, also completely different mechanisms were investigated, and different miRNAs tailored. However, in all four cases, an improvement of the outcome was found in vivo, independently from the condition studied.

3.5.2. Animals

Sixteen studies on animals were found for this macro-category, with the condition more largely studied being influenza (four studies). All but two of these studies were carried out on mice or rats, whereas Asquith et al. [85], studied chronic ethanol consumption in non-human primates, and Zhou et al. [88] assessed the effect of miRNAs and antagomiRs in influenza in one-month-old beagles.
Three studies [31,72,85] on chronic ethanol consumption, pneumonia, and systemic lupus erythematosus, investigated the role of miR-155, two [88,89] respectively on tuberculosis and influenza, of miR-143 and the others showed complete heterogeneity in the miRNAs studied.
Overall, antagomiRs demonstrated their efficacy in tailoring such conditions in vivo also on animal models, as already seen on humans, despite a lack of complete efficacy noticed by Chiba et al. [83] for miR-133b and let-7a antagomiRs in abnormal bronchial smooth muscle contraction studied in BALB/c mice.

3.5.3. Cell Lines

Nineteen studies were included in this category, most of which were already mentioned in the two previous (humans and animals) groups, as performed both in vivo and in vitro. Three of them were performed on influenza [86,88,90] and three others on lung fibrosis [26,82,84]. Other conditions were more rarely studied.
Concerning the miRNAs studied, as above, a slight prevalence (three studies: Bhattacharyya et al. [29] on cystic fibrosis, Podsiad et al. [31] on pneumonia, Zhou et al. [86] on systemic lupus erythematosus) included miR-155, with the positive results about the use of the respective antagomiR seen in vivo that were confirmed in vitro. miR-143 was successfully tailored in two studies (Tamgue et al. [89] on tuberculosis, Zhou et al., [88] on influenza) confirming the positive retrievals already seen in vivo.
Overall, the other antagomiRs were also seen to be efficient in positively tailoring the activity of the respective miRNAs, thus improving the biological outcome of the various conditions they were applied to, also in vitro, despite minor evidence of lack of (or reduced) efficacy seen in Chiba et al. [83] on abnormal bronchial smooth muscle contraction and in Morales et al. [87] on SARS-CoV.

4. Discussion

It is well established that miRNAs are pleiotropic molecules involved in almost all major biological processes. This concept was particularly studied in the lung, where specific miRNAs demonstrated to cooperate with organ development and pulmonary diseases. During the last years, much data has been collected on this topic, with special regards to obstructive and restrictive lung diseases [91,92,93]. In fact, as Sessa and Hata [94] reported, a typical miRNAs expression profile was noticed and different miRNAs play an active role among different processes including hemostasis, viral infection, and inflammation. Lung-specific miRNAs can be used as novel biomarkers in lung disorders. To date, several pieces of research focused on specific lung disease miRNAs expression patterns. However, specific miRNAs expression profiles may be noticed also among different organs. Previously, Wang et al. [20] conducted a study on rats, demonstrating that two specific miRNAs (miR-195 and miR-200c) were peculiarly expressed in the lung, while eight miRNAs were co-expressed in the lung and heart and one miRNA was co-expressed in the lung and kidney. As interest increased on this topic, accessible databases as, for example, MiRmine were created in order to allow researchers to retrieve expression profiles of single or multiple miRNAs for a specific tissue or cell line, either normal or with disease information [95]. According to our results, miR-21 seems to be the most represented miRNA among lung conditions. MiR-21 is often up-regulated in lung carcinoma. This fact is believed to be a result of the capacity of miR-21 to inhibit tumor suppressor phosphatase and tensin-homolog [96]. Collison et al. [24] characterized miRNAs expression among house dust mite allergic mice. A group was treated with antagomiRs that inhibited the function of specific miRNAs in the lung, and the other group received standard steroid therapy with dexamethasone. Finally, inflammatory lesions and airway hyper-responsiveness were measured. Researchers found that, although miR-21 and let-7b were highly expressed during allergic inflammation, blockade of their function was ineffective at modulating the expression of disease. On the other hand, Kim et al. [27] conducted a study on BALB/c mice noticing that antagomiR-21 increased phosphatase and tensin homolog (PTEN) levels (p < 0.05). Treatment with Ant-21 reduced phosphoinositide 3-kinase (PI3K) activity and restored histone deacetylase (HDAC2) levels (p < 0.05), leading to suppression of airway hyper-responsiveness and to restore of steroid sensitivity to allergic airway disease. Lee et al. [60] also investigated allergic inflammation among mouse models, reporting that MiR-21 expression was down-regulated in mice lungs treated with anti-miR-21. In fact, specific antagomiR reduced both eosinophil count (p < 0.01) and Th2 cytokines levels, including IL-5 and IL-13 in mice BAL fluid (p < 0.05). MiRNA21 demonstrated positive effects also upon lung ischemia. Ischemia/reperfusion injury (IRI) is the primary cause of acute lung injury (ALI) and primary graft dysfunction (PGD) after lung transplantation [97]. Li et al. [28] conducted a study on murine lung ischemia/reperfusion (I/R) and in vitro hypoxia/reoxygenation (H/R) models demonstrating that pre-treatment of mesenchymal stromal cells with miR-21-5p antagomiR ameliorated IRI in the lung. Regarding PAH, Pullamsetti et al. [25] conducted a study both on animal models and cell lines demonstrating that Ant-17 and Ant-21 reduced right ventricular systolic pressure and pulmonary arterial muscularization. Moreover, Ant-17 decreased hypoxia-induced right ventricular hypertrophy and improved pulmonary artery acceleration time. In mice, Ant-17 therapy reduced right ventricular systolic pressure and total pulmonary vascular resistance index, stabilized cardiac output and reduced pulmonary vascular remodeling. In human pulmonary artery smooth muscle cells, Ant-17 increased the cyclin-dependent kinase inhibitor 1A (p21). MiRNA 21 demonstrated to have a role also upon lung fibrosis. In fact, Shentu et al. [26] demonstrated that human mesenchymal stem cell-derived extracellular vesicles (mEVs) do contain several specific miRNAs including 21-5p and 630. MEVs suppress TGFβ1-induced myofibroblastic differentiation of normal and idiopathic pulmonary fibrosis (IPF) lung fibroblasts, thus mitigating tissue fibrotic response. Investigating the role of miRNA regarding the pathogenesis and progression of lung fibrosis, Liu et al. [98] found that miR-21 was up-regulated both in the lungs of mice presenting with bleomycin-induced lung fibrosis and IPF patients. In this setting, miR-21 was highly expressed by myofibroblasts in the fibrotic lungs. Furthermore, researchers noticed that miR-21 reduced bleomycin-induced lung fibrosis in rats’ lungs.
Overall, a simple explanation of the mechanisms involving antagomiR-21 in lung conditions is provided in Figure 2.
Another miRNA molecule, which is widely expressed in several lung conditions, is miR-155. Several studies demonstrated that this molecule is upregulated in activated immune cells, such as T and B lymphocytes, macrophages, and dendritic cells (DCs). Indeed, miR-155 levels increase in response to inflammatory mediators. Moreover, miRNA-155 can regulate B-cell proliferation, malignancy, antibody production, and the differentiation and function of IL-17-producing helper T cells. Furthermore, miR-155 is induced by LPS, as well as other TLR ligands and proinflammatory cytokines [99,100,101]. As miR-155 is involved in several processes, it is feasible to understand its role upon many lung disorders. Basing on the hypothesis that miR-155 upregulation could inhibit IL-17 expression and therefore increase susceptibility to secondary bacterial pneumonia, Podsiad et [31] al. conducted a study on wild-type C57BL/6 mice and human lung macrophages in order to investigate the role of miR-155 and the respective antagoMiR upon viral and bacterial pneumonia. They concluded that miR-155 antagomiR ameliorated lung bacterial clearance compared with controls. MiR-155 plays a crucial role also upon ARDS. Triggering receptors expressed on myeloid cells (TREM) proteins are a family of immunoglobulin cell surface receptors expressed on myeloid cells and they are considered as amplifiers of Toll-like receptor (TLR)-induced inflammation. Experiments with antagomiR-155 confirmed that TREM-1-mediated changes were dependent on miR-155. Yuan et al. [32] conducted a study on wild-type C57BL/6J mice and bone marrow-derived macrophages demonstrating that TREM-1 boosted inflammatory response by inducing the expression of miR-155 in macrophages. Therefore, researchers inhibited TREM-1 using a nanomicellar strategy. Neutrophilic inflammation was reduced, thus suggesting that TREM-1 inhibition is a potential therapeutic target for neutrophilic lung inflammation and ARDS. Systemic lupus erythematosus (SLE) is a complex auto-immune disease which can involve several systems, including lungs. Diffuse alveolar hemorrhage (DAH) is a rare but severe complication of SLE and miR-155 showed to have a relevant role. In fact, Zhou et al. [86] found that miR-155 expression was up-regulated during the development of DAH, noticing that this molecule targets several pro-inflammatory mediators. The extent of lung inflammation was markedly reduced in miR-155–knockout (miR-1552/2) mice. Moreover, in vivo silencing of miR-155 using miR-155 antagomiR reduced the incidence of iatrogenic-induced DAH. MiR-155 cooperates with Th2 responses too. In fact, it is extensively expressed in the Th cell, DCs, and macrophages in the lung. MiR-155 was also found to be up-regulated in the nasal mucosa and airway smooth muscle cells of allergic asthmatic patients [27,100,101]. Recently, Plank et al. [30] conducted a study on murine asthmatic models noticing that MiR-155-5p is highly upregulated in mice. However, while targeting of miR-155-5p with a specific antagomiR resulted in specific inhibition in vivo, it was not able to alter the disease phenotype. Authors hypothesized that this could be due to the variation in antagomiR uptake, which demonstrated to be effective in myeloid cells and weak in lymphocytes. Cystic fibrosis (CF) is an autosomal recessive disease, due to the occurrence of cystic fibrosis transmembrane conductance regulator (CFTR) gene mutations and it is characterized by a variable cytokines pro-inflammatory milieu. Bhattacharyya et al. [29] demonstrated that antagomiR-155 down-regulates miR-155 expression suppressing IL-8 and other proinflammatory genes in CF cells.
The mechanisms involving antagomiR-155 in lung conditions are displayed in Figure 3.

5. Conclusions

This systematic review provides numerous shreds of evidence regarding dysregulation in miRNAs expression in lung diseases. It remains to understand the sources of the various miRNAs, and whether they have mainly disease- or organ-specific effects. However, these findings may contribute to a better definition of the complex network of miRNAs involved in lung diseases. Thus, miRNAs have been proposed as diagnostic or prognostic biomarkers and therapeutic targets for future treatments. Notably, antagomiRs are chemically modified oligonucleotides that are used to silence microRNAs, having the property of bind specifically to particular microRNAs. These could represent a therapeutic opportunity to modulate miRNA-induced, post-transcriptional mRNA regulation. To our best knowledge, this is the first article describing evidence on the involvement of miRNAs and the efficacy of respective antagomiRs in different lung diseases, including studies conducted on humans, animals, and cells. In conclusion, these findings provide new knowledge on the network of miRNAs in lung diseases and suggest that antagomiRs may represent a target for a specific therapy for these diseases.
Key Points
  • Strong evidence confirmed that miRNAs play a crucial role in several pathologic mechanisms, therefore they have been proposed as diagnostic or prognostic biomarkers and therapeutic targets for future treatments.
  • AntagomiRs are chemically modified oligonucleotides able of silencing microRNAs and are now emerging as novel therapeutic agents in several conditions.
  • It has been widely demonstrated that miRNAs have a fundamental role among several lung conditions, moreover, some of these molecules proved to have a lung-specific tropism, thus suggesting the idea of lung-specific miRNAs patterns.
  • To our best knowledge, this is the first article describing the evidence on the involvement of miRNAs and the efficacy of respective antagomiRs in different lung diseases, including studies conducted on humans, animals, and cells.
  • Coherence between these groups has been demonstrated, thus suggesting the importance of developing new studies on these agents as target therapies.

Funding

This research received no external funding.

Conflicts of Interest

The authors declare no conflict of interest.

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Ijms 20 03938 g001 550
Figure 1. Study selection.
Figure 1. Study selection.
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Figure 2. AntagomiR-21 in lung conditions.
Figure 2. AntagomiR-21 in lung conditions.
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Figure 3. AntagomiR-155 in lung conditions.
Figure 3. AntagomiR-155 in lung conditions.
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Table
Table 1. Studies dealing with lung cancer (CDCP1: CUB-domain-containing protein 1; EC: endothelial cells; HUVECs: human umbilical vein endothelial cells; NOD-SCID: non-obese diabetic severe combined immune deficient; NSCLC: non-small cell lung cancer; SCID: severe combined immunodeficiency; TRAIL: tumor necrosis factor-related apoptosis-inducing ligand).
Table 1. Studies dealing with lung cancer (CDCP1: CUB-domain-containing protein 1; EC: endothelial cells; HUVECs: human umbilical vein endothelial cells; NOD-SCID: non-obese diabetic severe combined immune deficient; NSCLC: non-small cell lung cancer; SCID: severe combined immunodeficiency; TRAIL: tumor necrosis factor-related apoptosis-inducing ligand).
Lung Cancer
Humans
StudyDiseaseSamplemiRNAsFindings
Incoronato et al. (2010) [48]Lung cancerCells: Calu-1 NSCLC cells; H460 cells
Human Tissues: 18 snap-frozen normal and malignant lung tissues		miR-212AntagomiR 212 increases PED protein expression and resistance to TRAIL treatment (p < 0.05)
Liu et al. (2011) [34]Lung cancerCells: esophageal cancer cell lines KYSE150, KYSE410, KYSE70, EC109, and EC9706.
Clinical samples: 28 ESCC and 28 normal tissue samples from surgically resected esophageal carcinoma specimens.
Animals: five nude mice, injected with EC9706/miR-17-92 and EC9706/Control cells		miR-19aAntagomir-19a treatment impairs tumor growth in vivo (p < 0.05)
Liang et al. (2015) [10]Lung cancer20 NSCLC patients, 20 controlsmiR-223miR-223 antagomir decreases tumor cell invasion and increases EPB41L3 in A549 cells (p < 0.001)
Wu et al. (2015) [64]Lung cancerHumans: 81 NSCLC patients (12 Stage I, 14 Stage II, 26 Stage III, 29 Stage IV), 41 controls.
Animals: 4-week-old BALB/c nude mice.
Cells: NSCLC cell lines (A549, H1299, H1975, Hcc827), human embryonic kidney (HEK) 293T cells		miR-25miR-25 antagomir inhibited lung cancer growth via upregulation of MOAP1 in a mouse xenograft model (p < 0.01)
Sun et al. (2016) [62]Lung cancerHumans: NSCLC tumor tissue samples.
Cells: human NSCLC cell lines A549, H1299, SPC-A-1, 95D, SK-MES-1, NCI-H520, NCI-H460, human normal lung epithelial cell line 16HBE		miR-346AntagomiR-346 inhibited NSCLC cell growth and metastasis
Vera et al. (2017) [63]Lung cancerFifteen human cancer cell lines, ovarian cancer samples (n = 138), high-grade serous carcinoma (n = 22); normal ovarian samples (n = 10), peripheral blood mononuclear cells (n = 10)miR-7, miR-132, miR-335, and miR-148aRelative miR-7 and MAFG expression levels decreased when treated with antagomir
Wu et al. (2016a) [65]Lung cancerHumans: patients with lung adenocarcinoma (n = 129) and lung squamous cell carcinoma (n = 54).
Cells: human NSCLC cell line A549		miR-144-3pmiR-144-3p antagomir could enhance proliferation of IL-1β (p < 0.001)
Wu et al. (2016b) [66]Lung cancerHumans: human NSCLC tumor, adjacent normal lung tissues (n = 5).
Cells: human NSCLC cell lines H358 and H23		miR-96Antagomir-96 increased SAMD9 expression and the cisplatin-induced apoptosis and decreased cisplatin IC50 (p < 0.05)
Xie et al. (2017) [70]Lung cancerHumans: n = 83 patients with NSCLC.
Animals: NSCLC xenograft nude mouse model.
Cells: bronchoepithelial cell line BEAS-2B, A549, and HCC4006 human NSCLC cell line		miR-768-3pmiR-768-3p antagomir induced apoptosis and Fas/FasL expressional alteration of NSCLC cells; antimiR-768-3p transduction decreased viability, migration, invasion, MMP-2, MMP-9 activities in A549 and HCC4006 cells; antimiR-768-3p transfection inhibited growth and proliferation of NSCLC xenografts in nude mice (p < 0.05)
Zhu et al. (2018) [55]Lung cancerHumans: whole blood samples from patients with NSCLC and controls; tumor and nontumorous tissues obtained from NSCLC patients (n = 20).
Cells: NSCLC cell lines SPCA1, A549, H2170		miR-92aProliferation of SPCA1, A549, H2170 inhibited by antimiR-92a (p < 0.05)
He et al. (2019) [33]Lung adenocarcinomaHuman lung cancer cells A549, human bronchial epithelial cells BEAS-2B, human lung cancer cells SPCA1, SPC-A-1-BM human lung adenocarcinoma cell linemiR-499a-5pInhibition of miR-499a-5p by antagomirs restrained tumor growth in vivo (p < 0.01)
Animals
StudyDiseaseSamplemiRNAsFindings
Cha et al. (2010) [40]Lung cancerAnimals: n = 20 5-week-old male BALB/c nude mice.
Cell lines: CL1-0, CL1-5 lung adenocarcinoma cell lines. H1299, PC14, H928, A549 lung cancer, MCF-7, MDA-MB231, MDA-MD431, T47D, SKBR3 breast cancer cell lines		miR-519cAntagomir inhibition of miR-519c increased HIF-1α protein and enhanced angiogenic activity (p < 0.05)
Liu et al. (2011) [34]Lung cancerCells: esophageal cancer cell lines KYSE150, KYSE410, KYSE70, EC109, EC9706.
Clinical samples: 28 ESCC, 28 normal tissue samples from surgically resected esophageal carcinoma specimens.
Animals: five nude mice injected with EC9706/miR-17-92 and EC9706/Control cells		miR-19aAntagomir-19a treatment impairs tumor growth in vivo (p < 0.05)
Lin et al. (2013) [73]Lung cancerAnimals: n = 10 mice.
Cells: lung cancer cell lines CL1-0, CL1-1, CL1-5 and CL1-5-F4. A549, HOP-62, H441, CL141 cells, melanoma cell line UACC-257. H1299 and HEK-293 cells		miR-135bmiR-135b antagomirs suppress cancer cell invasion, orthotopic lung tumor growth and metastasis in mouse model (p < 0.05)
Shi et al. (2014) [59]Lung cancerAnimals: immune-deficient NOD-SCID mice.
Cells: human NSCLC cell lines A549, H460, and H1299		miR-34aExpression of antimiR-34a in the CD44lo H460 cells promoted tumor development (p < 0.05)
Chiu et al. (2015) [42]Lung cancerHuman cells: human lung cancer cell lines CL1-0, F4, Bm7, Bm7brmx2, A549, H1299.
Animals: Lung cancer cells injected into SCID mice		miR-218CDCP1 protein levels increased in cells treated with miR-218 antagomirs (p < 0.05)
Mao et al. (2015) [74]Lung cancerHuman cells: HUVECs, tumor cell lines A549, H1299, HCC827. Animals: male BALB/c nude micemiR-494MiR-494 antagomiR inhibited angiogenesis and attenuated the growth of tumor xenografts in nude mice (p < 0.05)
Wu et al. (2015) [64]Lung cancerHumans: 81 NSCLC patients (12 Stage I, 14 Stage II, 26 Stage III, 29 Stage IV), 41 controls.
Animals: BALB/c nude mice.
Cells: NSCLC cell lines A549, H1299, H1975, Hcc827, HEK 293T cells		miR-25miR-25 antagomir inhibited lung cancer growth via upregulation of MOAP1 in a mouse xenograft model (p < 0.01)
Xie et al. (2017) [70]Lung cancerHumans: n = 83 NSCLC patients.
Animals: NSCLC xenograft nude mouse model.
Cells: bronchoepithelial cell line BEAS-2B, A549 and HCC4006 human NSCLC cell line		miR-768-3pmiR-768-3p antagomir induced distinctly apoptosis and Fas/FasL expressional alteration of NSCLC cells; miR-768-3p antagomir transduction decreased viability, migration, invasion, MMP-2, and MMP-9 activities in A549 and HCC4006 cells; miR-768-3p antagomir transfection inhibited the growth and proliferation of NSCLC xenografts in nude mice (p < 0.05)
Zhang et al. (2018) [53]Lung cancerAnimals: 20 male BALB/c nu/nu mice.
Cells: EGFR mutant non-small cell lung cancer cell line PC-9		miR-214AntagomiR-214 reversed gefitinib resistance conferred by PC-9GR-derived exosomes in vitro and reversed gefitinib resistance in vivo (p < 0.01 in both cases)
McCann et al. (2019) [75]Lung cancerAnimals: mice models.
Cells: primary endothelial cells isolated from normal or tumor tissue from mice		miR-30cmiR-30c antagomiRs promoted PAI-1–dependent tumor growth and increased fibrin abundance (p < 0.05)
Cell Lines
StudyDiseaseSamplemiRNAsFindings
Cha et al. (2010) [40]Lung cancerAnimals: n = 20 5-week-old male BALB/c nude mice.
Cell lines: CL1-0, CL1-5 lung adenocarcinoma cell lines. H1299, PC14, H928, A549 lung cancer, MCF-7, MDA-MB231, MDA-MD431, T47D, SKBR3 breast cancer cell lines		miR-519cAntagomir inhibition of miR-519c increased the level of HIF-1α protein and enhanced angiogenic activity (p < 0.05)
Guo et al. (2010) [46]Lung cancerHuman small lung cancer cell line NCI-H69 and drug-resistant subline H69ARmiR-134, miR-379, miR-495Sensitivity to anti-cancer drugs Cisplatin, Etoposide, and Doxorubicin reduced after transfection of drug-resistant H69AR cells with the antagomirs of miR-134, miR-379 and miR-495 (p < 0.05)
Incoronato et al. (2010) [48]Lung cancerCells: Calu-1 NSCLC cells; H460 cells
Human Tissues: 18 snap-frozen normal and malignant lung tissues		miR-212AntagomiR 212 increases PED protein expression and resistance to TRAIL treatment (p < 0.05)
Liu et al. (2011) [34]Lung cancerCells: esophageal cancer cell lines KYSE150, KYSE410, KYSE70, EC109, and EC9706.
Clinical samples: 28 ESCC and 28 normal tissue samples from surgically resected esophageal carcinoma specimens.
Animals: five nude mice, injected with EC9706/miR-17-92 and EC9706/Control cells		miR-19aAntagomir-19a treatment impairs tumor growth in vivo (p < 0.05)
Lin et al. (2013) [73]Lung cancerAnimals: n = 10 mice.
Cells: lung cancer cell lines CL1-0, CL1-1, CL1-5, and CL1-5-F4. A549, HOP-62, H441, CL141 cells, melanoma cell line UACC-257. H1299 and HEK-293 cells		miR-135bmiR-135b antagomirs suppress cancer cell invasion, orthotopic lung tumor growth, and metastasis in mouse model (p < 0.05)
Shi et al. (2014) [59]Lung cancerAnimals: Immune-deficient NOD-SCID mice.
Cells: human NSCLC cell lines A549, H460, and H1299		miR-34aExpression of miR-34a antagomirs in the CD44lo H460 cells promoted tumor development (p < 0.05)
Silveyra et al. (2014) [60]Lung cancerCells: lung adenocarcinoma cell line NCI- H441, three Chinese hamster ovary (CHOK1) cell lines expressing the human SP-A variants 1A0, 6A2, and 6A4miR-183, miR-4507antagomir-183 reversed the effects of mir-183 on SP-A mRNA levels (p < 0.05)
Chiu et al. (2015) [42]Lung cancerHuman cells: human lung cancer cell lines CL1-0, F4, Bm7, Bm7brmx2, A549, and H1299.
Animals: lung cancer cells injected intracardially into SCID mice		miR-218CDCP1 levels increased in cells treated with antimiR-218 (p < 0.05)
Mao et al. (2015) [74]Lung cancerHuman cells: HUVECs, tumor cell lines A549, H1299, HCC827. Animals: male BALB/c nude micemiR-494AntimiR-494 inhibited angiogenesis and attenuated the growth of tumor xenografts in nude mice (p < 0.05)
Sun et al. (2015) [61]Lung cancerNSCLC cell line A549miR-1290AntimiR-1290 suppressed tumor volume and weight initiated by CD133+ cells in vivo; Anti-miR-1290 inhibited proliferation, clonogenicity, invasion, and migration of CD133+ (p < 0.05)
Wu et al. (2015) [64]Lung cancerHumans: 81 NSCLC patients (12 Stage I, 14 Stage II, 26 Stage III, 29 Stage IV), 41 controls.
Animals: BALB/c nude mice.
Cells: NSCLC cell lines A549, H1299, H1975, Hcc827, HEK 293T cells		miR-25miR-25 antagomir inhibited lung cancer growth via upregulation of MOAP1 in mice (p < 0.01)
Sun et al. (2016) [62]Lung cancerHumans: NSCLC tumor tissues.
Cells: human NSCLC cell lines A549, H1299, SPC-A-1, 95D, SK-MES-1, NCI-H520, NCI-H460, human normal lung epithelial cell line 16HBE		miR-346AntimiR-346 inhibited NSCLC cell growth and metastasis
Wu et al. (2016a) [65]Lung cancerHumans: patients with lung adenocarcinoma (n = 129) and lung squamous cell carcinoma (n = 54).
Cells: human NSCLC cell line A549		miR-144-3pmiR-144-3p antagomir could enhance IL-1β proliferation (p < 0.001)
Wu et al. (2016b) [66]Lung cancerHumans: human NSCLC tumor, adjacent normal lung tissues (n = 5).
Cells: human NSCLC cell lines H358 and H23		miR-96Antagomir-96 increased SAMD9 expression and the cisplatin-induced apoptosis, it decreased cisplatin IC50 (p < 0.05)
Vera et al. (2017) [63]Lung cancer15 human cancer cell lines, ovarian cancer samples (n = 138), high-grade serous carcinoma (n = 22); normal ovarian samples (n = 10), peripheral blood mononuclear cells (n = 10)miR-7, miR-132, miR-335, and miR-148aRelative miR-7 and MAFG expression levels decreased when treated with antagomir
Xie et al. (2017) [70]Lung cancerHumans: n = 83 NSCLC patients.
Animals: NSCLC xenograft nude mouse model.
Cells: bronchoepithelial cell line BEAS-2B, A549 and HCC4006 human NSCLC cell line		miR-768-3pmiR-768-3p antagomir induced distinctly apoptosis and Fas/FasL expressional alteration of NSCLC cells; miR-768-3p antagomir transduction decreased viability, migration, invasion, MMP-2, and MMP-9 activities in A549 and HCC4006 cells; miR-768-3p antagomir transfection inhibited the growth and proliferation of NSCLC xenografts in nude mice (p < 0.05)
Zhang et al. (2018) [53]Lung cancerAnimals: 20 male BALB/c nu/nu mice.
Cells: EGFR mutant non-small cell lung cancer cell line PC-9		miR-214AntagomiR-214 reversed gefitinib resistance in vitro and in vivo (p < 0.01)
Zhu et al. (2018) [55]Lung cancerHumans: whole blood samples collected from healthy individuals and NSCLC patients; tumor and adjacent nontumorous tissues from NSCLC patients (n = 20).
Cells: NSCLC cell lines SPCA1, A549, H2170		miR-92aProliferation of SPCA1, A549, H2170 inhibited by antimiR-92a (p < 0.05)
He et al. (2019) [33]Lung adenocarcinomaHuman lung cancer cells A549, human bronchial epithelial cells BEAS-2B, human lung cancer cells SPCA1, SPC-A-1-BMmiR-499a-5pInhibition of miR-499a-5p by antagomirs restrained tumor growth in vivo (p < 0.01)
McCann et al. (2019) [75]Lung cancerAnimals: mice models.
Cells: primary endothelial cells isolated from normal or tumor tissue from mice		miR-30cmiR-30c antagomiRs promoted PAI-1–dependent tumor growth and increased fibrin abundance (p < 0.05)
Table
Table 2. Studies dealing with bronchial hypersensitivity (avSG: antiviral stress granules; COPD: chronic obstructive pulmonary disease; pBECs: primary bronchial epithelial cells; PH: pulmonary hypertension; PKR: protein kinase R; PTEN: phosphatase and tensin homolog; SAECs: small airway epithelial cells).
Table 2. Studies dealing with bronchial hypersensitivity (avSG: antiviral stress granules; COPD: chronic obstructive pulmonary disease; pBECs: primary bronchial epithelial cells; PH: pulmonary hypertension; PKR: protein kinase R; PTEN: phosphatase and tensin homolog; SAECs: small airway epithelial cells).
Bronchial Hypersensitivity
Humans
StudyDiseaseSamplemiRNAsFindings
Baker et al. (2016) [37]COPDPeripheral lung samples from COPD patients and controls; airway epithelial cellsmiR-34amiR-34a antagomirs increased SIRT1 (p < 0.01)/-6 (p < 0.05) mRNA levels, decreasing cellular senescence markers in COPD (p < 0.05)
Hsu et al. (2016) [76]COPDFive COPD, five smokers, five controlsmiR-132Ectopic expression of PKR or miR-132 antagomiR alone failed to restore IFN-β induction (p > 0.05), co-treatment increased avSG formation, induction of p300, and IFN-β in COPD pBECs (p < 0.05)
Jiang et al. (2018) [49] COPDHumans: 73 patients with PH, 32 controls.
Animals: hypoxia-induced PH mice		miR-190a-5pAntagomir-190a-5p reduced right ventricular systolic pressure (p < 0.01) and enhanced KLF15 expression (p < 0.0001) in lung tissue
Baker et al. (2019) [38]COPD30 COPD/18 controls: lung tissue from tissue bank; 14 COPD, 10 non-smoking controls: human primary SAECs cultured; 13 COPD, five controls: sputum samples collectedmiR-570-3pInhibition of elevated miR-570-3p in COPD small airway epithelial cells, using an antagomir, restores sirtuin-1, and suppresses markers of cellular senescence, restoring cellular growth (p < 0.05)
Animals
StudyDiseaseSamplemiRNAsFindings
Collison et al. (2011) [24]Allergic airway diseaseBALB/c mice sensitized with house dust mitemiR-145, miR-21, let-7bInhibition of miR-145 (p < 0.05), but not miR-21 or let-7b (both p > 0.05), inhibited eosinophilic inflammation, mucus hypersecretion, TH2 cytokine production, and airway hyper-responsiveness
Li et al. (2015) [50]Airway hyper-responsivenessWild-type specific pathogen-free BALB/c micemiR-9AntagomiR-9 increased PP2A activity and GR nuclear translocation in macrophages (p < 0.05), restored steroid sensitivity in steroid-resistant airway hyper-responsiveness
Plank et al. (2015) [30]AsthmaSpecific pathogen-free BALB/c micemiR-155-5pAntagomir administration reduced miR-155-5p expression (p < 0.01), but failed to alter the disease phenotype (p > 0.05). It exhibits poor uptake in lymphocytes
Kim et al. (2017) [27]AsthmaBALB/c micemiR-21Antagomir-21 increased PTEN levels (p < 0.05). Treatment with Ant-21 reduced PI3K activity and restored HDAC2 levels (p < 0.05), suppressing airway hyper-responsiveness and restoring steroid sensitivity to allergic airway disease
Lee et al. (2017) [35]Acute bronchial asthmaBALB/c mice sensitized and challenged with ovalbuminmiR-21MiR-21 expression down-regulated in mice lungs treated with anti-miR-21. It reduced total cell (p < 0.001) and eosinophil counts (p < 0.01) in BAL fluid and the levels of IL-5 and IL-13 (p < 0.05)
Jiang et al. (2018) [49]COPDHumans: 73 patients with PH, 32 controls.
Animals: hypoxia-induced PH mice		miR-190a-5pAntagomir-190a-5p reduced right ventricular systolic pressure (p < 0.01) and enhanced the KLF15 expression levels (p < 0.0001) in lung tissue
Cell Lines
StudyDiseaseSamplemiRNAsFindings
Baker et al. (2016) [37]COPDPeripheral lung samples from COPD patients and controls; airway epithelial cellsmiR-34amiR-34a antagomirs increased SIRT1 (p < 0.01)/-6 (p < 0.05) mRNA levels, decreasing markers of cellular senescence in airway epithelial cells from COPD (p < 0.05)
Hsu et al. (2016) [76]COPDFive COPD, five smokers, five controlsmiR-132Ectopic expression of PKR or miR-132 antagomiR alone failed to restore IFN-β induction (p > 0.05), co-treatment increased avSG formation, induction of p300 and IFN-β in COPD pBECs (p < 0.05)
Baker et al. (2019) [38]COPD30 COPD/18 controls: lung tissue from a tissue bank; 14 COPD, 10 non-smoking controls: human primary SAECs cultured; 13 COPD, five controls: sputum samples collectedmiR-570-3pInhibition of elevated miR-570-3p in COPD small airway epithelial cells, using an antagomir, restores sirtuin-1 and suppresses markers of cellular senescence, restoring cellular growth (p < 0.05)
Table
Table 3. Studies dealing with pulmonary hypertension (EC: endothelial cells; HPASMCs: human pulmonary arterial smooth muscle cells; MCT-PAH: monocrotaline pulmonary artery hypertension; PAH: pulmonary artery hypertension; SMC: smooth muscle cells).
Table 3. Studies dealing with pulmonary hypertension (EC: endothelial cells; HPASMCs: human pulmonary arterial smooth muscle cells; MCT-PAH: monocrotaline pulmonary artery hypertension; PAH: pulmonary artery hypertension; SMC: smooth muscle cells).
Pulmonary Hypertension
Humans
StudyDiseaseSamplemiRNAsFindings
Potus et al. (2014) [77]Pulmonary hypertensionHumans: percutaneous biopsy of vastus lateralis (n = 11 patients, n = 9 controls).
Animals: male Sprague-Dawley rats.
Cells: CD311 cells isolated from two idiopathic PAH, two heritable PAH, and three control quadriceps biopsies		miR-126AntagomiR-126 in healthy CD31+ cells mimicked the PAH phenotype. In skeletal muscle of healthy rats, it decreased muscle capillarity (p < 0.05) and exercise tolerance in treadmill tests (p < 0.05)
Animals
StudyDiseaseSamplemiRNAsFindings
Pullamsetti et al. (2012) [25]Pulmonary hypertensionAnimals: mice and rat models.
Cells: pooled human umbilical vein ECs and human pulmonary artery SMCs		miR-17, miR-21, miR-92aAnt-17 and Ant-21 reduced right ventricular systolic pressure, all antagomirs decreased pulmonary arterial muscularization. Ant-17 reduced hypoxia-induced right ventricular hypertrophy, improved pulmonary artery acceleration time. In rats, Ant-17 decreased right ventricular systolic pressure and total pulmonary vascular resistance index, increased pulmonary artery acceleration time, normalized cardiac output, and decreased pulmonary vascular remodeling. In human pulmonary artery smooth muscle cells, Ant-17 increased p21
Brock et al. (2014) [39]Pulmonary hypertensionAnimals: four mice samples (three in hypoxic condition, one control).
In vitro: HPASMCs		miR-20aAnimals: AntagomiR-20a enhanced BMPR2 expression levels in lung tissues by 59.3% (p < 0.001), reduced wall thickness (p < 0.01), luminal occlusion of small pulmonary arteries (p < 0.001) and right ventricular hypertrophy (p < 0.01).
In vitro: Transfection of HPASMCs with antimiR-20a activates downstream targets of BMPR2 increasing activation of Id-1 and Id-2 (p < 0.05). HPASMCs proliferation reduced upon transfection with antagomiR-20a (p < 0.05)
Potus et al. (2014) [77]Pulmonary hypertensionHumans: percutaneous biopsy of vastus lateralis (n = 11 patients, n = 9 controls).
Animals: male Sprague-Dawley rats.
Cells: CD311 cells isolated from two idiopathic PAH, two heritable PAH, and three control quadriceps biopsies		miR-126AntagomiR-126 in healthy CD31+ cells mimicked the PAH phenotype. In skeletal muscle of healthy rats, it decreased muscle capillarity (p < 0.05) and exercise tolerance in treadmill tests (p < 0.05)
Sharma et al. (2015) [57]Pulmonary hypertensionMale Sprague-Dawley ratsmiR-206Knockdown of miR-206 reduced right ventricular pressure and right ventricular hypertrophy index
Gubrij et al. (2016) [78]Pulmonary hypertensionMCT-PAH ratsmiR-223A223 reduced levels of miR-223 in pulmonary artery and lungs of MCT PAH rats as compared to controls (p < 0.05), but did not attenuate MCT PAH (p > 0.05)
Mondejar-Parreño et al. (2019) [51]Pulmonary hypertensionPathogen-free male Wistar ratsmiR-1AntagomiR-1 prevented (p < 0.05) hypoxia-induced decline in voltage-dependent potassium channel Kv1.5 currents
Cell Lines
StudyDiseaseSamplemiRNAsFindings
Pullamsetti et al. (2012) [25]Pulmonary hypertensionAnimals: mice and rat models.
Cells: pooled human umbilical vein ECs and human pulmonary artery SMCs		miR-17, miR-21, miR-92aAnt-17 and Ant-21 reduced right ventricular systolic pressure, all antagomirs decreased pulmonary arterial muscularization. Ant-17 reduced hypoxia-induced right ventricular hypertrophy, improved pulmonary artery acceleration time. In rats, Ant-17 decreased right ventricular systolic pressure and total pulmonary vascular resistance index, increased pulmonary artery acceleration time, normalized cardiac output, and decreased pulmonary vascular remodeling. In human pulmonary artery smooth muscle cells, Ant-17 increased p21
Brock et al. (2014) [39]Pulmonary hypertensionAnimals: four mice samples (three in hypoxic condition, one control).
In vitro: HPASMCs		miR-20aAnimals: AntagomiR-20a enhanced BMPR2 expression levels in lung tissues by 59.3% (p < 0.001), reduced wall thickness (p < 0.01), luminal occlusion of small pulmonary arteries (p < 0.001) and right ventricular hypertrophy (p < 0.01).
In vitro: Transfection of HPASMCs with antimiR-20a activates downstream targets of BMPR2 increasing activation of Id-1 and Id-2 (p < 0.05). HPASMCs proliferation reduced upon transfection with antagomiR-20a (p < 0.05)
Potus et al. (2014) [77]Pulmonary hypertensionHumans: percutaneous biopsy of vastus lateralis (n = 11 patients, n = 9 controls).
Animals: male Sprague-Dawley rats.
Cells: CD311 cells isolated from two idiopathic PAH, two heritable PAH, and three control quadriceps biopsies		miR-126AntagomiR-126 in healthy CD31+ cells mimicked the PAH phenotype. In skeletal muscle of healthy rats, it decreased muscle capillarity (p < 0.05) and exercise tolerance in treadmill tests (p < 0.05)
Table
Table 4. Studies dealing with lung injury (BALF: bronchoalveolar lavage fluid; BMDM: bone marrow-derived macrophages; PBEF: pre-B-cell colony-enhancing factor).
Table 4. Studies dealing with lung injury (BALF: bronchoalveolar lavage fluid; BMDM: bone marrow-derived macrophages; PBEF: pre-B-cell colony-enhancing factor).
Lung Injury
Animals
StudyDiseaseSamplemiRNAsFindings
Xu et al. (2014) [68]Lung injuryAnimals: healthy male C57BL/6 mice.
Cells: Epithelial cells		miR-17miR-17 antagomir increased the expression of FoxA1 in Acute Lung Injury mice (p < 0.05)
Yuan et al. (2015) [32]Lung inflammationAnimals: male wild-type C57BL/6J mice.
Cells: bone marrow-derived macrophages		miR-155Increased expression of miR155 by mTREM-1 suppressed by antimiR-155 (p < 0.05)
Fu et al. (2018) [45]Pulmonary inflammationAnimals: male BALB/c mice.
Cells: murine macrophage RAW264.7 cells		miR-92aAntagomir-92a reduced pathological changes associated with lung inflammation, reduces lung wet/dry ratio (p < 0.01), and Evans blue dye extravasation (p < 0.01).
Inhibition of miR-92a reduced the repression of TNF-α, IL-1β, IL-6 (p < 0.01) in lung tissues
Wu et al. (2018) [67]Acute lung injuryMK2 deficient mice (C57BL/6) (B6.129P2-Mapkapk2tm1Dgen/J, and MK2flox/flox miceLet-7eTransfection of anti-let-7e into MK2-/- BMDM rescued LPS-induced expression of TNF-α, IL-6, and MIP-2 (p < 0.05)
Xie et al. (2018) [79]Lung inflammation, lung injuryAnimals: male C57BL/6 mice.
Cells: RAW264.7 cells		miR-34b-5pmiR-34b-5p antagomir in vivo inhibited miR-34b-5p up-regulation, reduced inflammatory cytokine release, decreased alveolar epithelial cell apoptosis, attenuated lung inflammation, improved survival by targeting PGRN during acute lung injury (p < 0.05)
Huang et al. (2019) [47]Acute Lung InjurySixty healthy male-specific pathogen free C57BL/6 micemiR-27bDownregulation of miR-27b decreased the levels of IL-1β, IL-6, and TNF-α in BALF of Acute Lung Injury mice (p < 0.05)
Cell Lines
StudyDiseaseSamplemiRNAsFindings
Adyshev et al. (2013) [80]Lung injuryHuman pulmonary artery endothelial cellshsa-miR-374a, hsa-miR-374b, hsa-miR-520c-3p, hsa-miR-1290Antagomirs for each MYLK miRNA increased 3′UTR luciferase activity (1.2–2.3 FI) and rescued the decreased MLCK-3′UTR reporter activity produced by miRNA mimics (70%–110% increases for each miRNA; p < 0.05)
Adyshev et al. (2014) [81]Lung inflammationHuman pulmonary artery endothelial cellshsa-miR-374a, hsa-miR-568Antagomirs for each PBEF/NAMPT miRNA increased the endogenous PBEF/NAMPTmRNA and protein levels and 3′-UTR luciferase activity compared with controls (p < 0.05)
Xu et al. (2014) [68]Lung injuryAnimals: healthy male C57BL/6 mice.
Cells: epithelial cells		miR-17miR-17 antagomir increased the expression of FoxA1 in Acute Lung Injury mice (p < 0.05)
Yuan et al. (2015) [32]Lung inflammationAnimals: Male wild-type C57BL/6J mice.
Cells: bone marrow-derived macrophages		miR-155Increased expression of miR155 by mTREM-1 suppressed by antagomir against miR-155 (p < 0.05)
Fu et al. (2018) [45]Pulmonary inflammationAnimals: male BALB/c mice.
Cells: murine macrophage RAW264.7 cells		miR-92aAntagomir-92a reduced pathological changes associated with lung inflammation, reduces lung wet/dry ratio (p < 0.01), and Evans blue dye extravasation (p < 0.01).
Inhibition of miR-92a ameliorated the inflammatory response by reducing the repression of TNF-α, IL-1β, IL-6 (p < 0.01) in lung tissues
Xie et al. (2018) [79]Lung inflammation, lung injuryAnimals: male C57BL/6 mice.
Cells: RAW264.7 cells		miR-34b-5pmiR-34b-5p antagomir in vivo inhibited miR-34b-5p up-regulation, reduced inflammatory cytokine release, decreased alveolar epithelial cell apoptosis, attenuated lung inflammation, improved survival by targeting PGRN during acute lung injury (p < 0.05)
Table
Table 5. Studies dealing with other conditions (ACE2: Angiotensin Converting Enzyme 2; BMDM: bone marrow-derived macrophages; BSM: bronchial smooth muscle; CF: Cystic Fibrosis; CIV: canine influenza virus; hBSMCs: human BSM cells; HLMECs: human lung microvascular endothelial cells; HPASMCs: human pulmonary arterial smooth muscle cells; HS: honeysuckle; HUVECs: human umbilical vein endothelial cells; Igfbp5: insulin-like growth factor binding protein 5; MDCK: Madin-Darby Canine Kidney; MDM: monocyte-derived macrophages; MSC: mesenchymal stromal cell; PASMC: pulmonary arterial smooth muscle cells; PBMC: peripheral blood mononuclear cells; SARS-CoV: severe acute respiratory syndrome coronavirus).
Table 5. Studies dealing with other conditions (ACE2: Angiotensin Converting Enzyme 2; BMDM: bone marrow-derived macrophages; BSM: bronchial smooth muscle; CF: Cystic Fibrosis; CIV: canine influenza virus; hBSMCs: human BSM cells; HLMECs: human lung microvascular endothelial cells; HPASMCs: human pulmonary arterial smooth muscle cells; HS: honeysuckle; HUVECs: human umbilical vein endothelial cells; Igfbp5: insulin-like growth factor binding protein 5; MDCK: Madin-Darby Canine Kidney; MDM: monocyte-derived macrophages; MSC: mesenchymal stromal cell; PASMC: pulmonary arterial smooth muscle cells; PBMC: peripheral blood mononuclear cells; SARS-CoV: severe acute respiratory syndrome coronavirus).
Other Conditions
Humans
StudyDiseaseSamplemiRNAsFindings
Chatterjee et al. (2014) [41]Lung cell dysfunctionHLMECs, HUVECsmiR-147bMiR-147b antagomir increased total and cell surface expression of ADAM15 in endothelial cells (p < 0.05)
Ge et al. (2016) [82]Lung fibrosisHumans: bronchial epithelia from lung transplant patients. Cells: primary fibroblasts isolated from human lungsmiR-323a-3pAntagomirs for miR-323a-3p augment murine lung fibrosis after bleomycin injury (p < 0.05)
Sharma et al. (2018) [58]HIV infection and substance abuseHuman monocyte derived macrophages, HPASMCsmiR-130aTransfection of HPASMCs with antagomir-130a–ameliorated the extracellular vesicles-induced effect (p < 0.001)
Yuan et al. (2018) [69]TuberculosisFifty patients, 20 controls. Monocytes isolated from peripheral blood mononuclear cellsmiR-196b-5pantagomir-196b-5p promoted Bacillus Calmette–Guérin uptake in MDMs or differentiated U937 cells (p < 0.05)
Animals
StudyDiseaseSamplemiRNAsFindings
Krützfeldt et al. (2005) [7]Various conditionsMice modelsmiR-16, miR-122, miR-192, miR-194Intravenous administration of antagomirs reduced miRNA levels in liver, lung, kidney, heart, intestine, fat, skin, bone marrow, muscle, ovaries, and adrenals
Chiba et al. (2009) [83]Abnormal BSM contractionBSM cells, bronchial tissues of BALB/c micemiR-133aUp-regulation of RhoA when endogenous miR-133a function inhibited by its antagomir in hBSMCs (p < 0.05). No effect (p > 0.05) of miR-133b and let-7a antagomirs
Pandit et al. (2010) [84]Pulmonary FibrosisAnimals: mice models.
Cells: 10 Idiopathic Pulmonary Fibrosis, 10 control tissues		Let-7dLet-7d antagomir decreased expression of CDH1 and TJP1 and increased COL1A1 and HMGA2 expression in the lungs (p < 0.05)
Rosenberger et al. (2012) [56]InfluenzaC57Bl/6, MyD88null micemiR-451Three types of primary dendritic cells treated with antagomirs against miR-451 secreted elevated levels of IL-6 (p< 0.01), TNF (p < 0.05), CCL5/RANTES (p < 0.05), and CCL3/MIP1α (p < 0.01)
Asquith et al. (2014) [85]Chronic ethanol consumptionFrom non-human primates: PBMC, mesenteric and tracheobronchial lymph nodes, jejunum, duodenum, ileum, and descending colonmiR-181a, miR-221 (in PBMC), miR-155 (in colon)Transfection of miRNA antagomirs upregulated both STAT-3 (p < 0.05)/ARNT (p < 0.001), VEGF (p < 0.05)/HGF (p < 0.01)/G-CSF (p < 0.05)
Zhang et al. (2015) [52]Various disordersAnimals: BALB/c mice.
Cells: 4T1 murine breast cancer cells		miR-10bAntagomir-10b and PTX delivered by D-Lip delays the growth of 4T1 tumors and reduce lung metastases; Hoxd10 expression in tumors up-regulated (p < 0.01)
Zhou et al. (2015) [54]InfluenzaAnimals: six groups of mice (five mice per group), including control group.
Cells: MDCK cells		miR-2911Inhibitory effect of HS decoction on viral replication abolished by anti-miR2911 (p < 0.05)
Podsiad et al. (2015) [31]PneumoniaAnimals: wild-type C57BL/6 mice.
Cells: Human lung macrophages		miR-155miR-155 antagomir improved lung bacterial clearance by 4.2-fold
Zhou et al. (2016) [86]Systemic Lupus ErythematosusAnimals: C57BL/6J (B6) and B6.Cg-Mir155tm1.1Rsky/J mice.
Cells: Hepa 1-6 cells		miR-155Disease progression reduced by 20% by in vivo using of antimiR-155
Ma et al. (2017) [71] HypoxiaAnimals: adult male Wistar rats.
Cells: PASMC cultured		miR-125amiR-125a antagomir mimicked the hypoxic damage effects to mitochondrial homeostasis (p < 0.05)
Morales et al. (2017) [87]SARS-CoVAnimals: female mice.
Cells: mouse delayed brain tumor cells expressing the murine SARS-CoV receptor ACE2		svRNA-nsp3.1, svRNA-nsp3.2, svRNA-N, miR-877Antagomirs reduced partially (svRNA-nsp3.1), or totally (svRNA-nsp3.2, svRNA-N, miR-877), the luciferase activity
Zhou et al. (2017) [88]InfluenzaAnimals: beagles.
Cells: MDCK cells		cfa-miR-143Anti-cfa-miR-143 caused upregulation of Igfbp5 in CIV-infected MDCK cells
Fehl et al. (2019) [44]Bronchopulmonary dysplasiaNewborn C57BL/6J miceN/AAntagomiRs impacted lung volume (p < 0.05), septal thickness (p < 0.01), and the transcriptome (p < 0.05) of developing mouse lungs
Li et al. (2019) [28]Lung ischemiaMail C57/BL6 micemiR-21-5pPre-treatment of MSCs with miR-21-5p antagomir decreased miR-21-5p expression level in exosomes secreted
Tamgue et al. (2019) [89]TuberculosisBone marrow-derived macrophages generated from male BALB/c micemiR-143, miR-365Antagomirs for miR-143 and miR-365 decreased the intracellular growth of Mtb HN878, reduced the production of IL-6 (p < 0.001) and CCL5 (p < 0.01 for miR-143, p < 0.05 for miR-365) and promoted the apoptotic death of Mtb HN878-infected BMDMs (p < 0.01 for miR-143, p < 0.05 for miR-365)
Zhang et al. (2019) [90]InfluenzaAnimals: C57BL/6 mice.
Cells: human pulmonary epithelial cell line A549		miR-146aDownregulation of miR-146a inhibits Influenza A Virus replication by enhancing type I IFN response through TRAF6 in vitro and in vivo (p < 0.01)
Cell Lines
StudyDiseaseSamplemiRNAsFindings
Chiba et al. (2009) [83]Abnormal BSM contractionBSM cells, bronchial tissues of BALB/c micemiR-133aUp-regulation of RhoA when endogenous miR-133a function inhibited by its antagomir in hBSMCs (p < 0.05). No effect (p > 0.05) of miR-133b and let-7a antagomirs
Pandit et al. (2010) [84]Pulmonary FibrosisAnimals: mice models.
Cells: 10 Idiopathic Pulmonary Fibrosis and 10 control tissues		Let-7dLet-7d antagomir decreased expression of CDH1 and TJP1, and increased COL1A1 and HMGA2 expression in the lungs (p < 0.05)
Bhattacharyya et al. (2011) [29]Cystic FibrosisLung epithelial cellsmiR-155Antagomir-155 in CF cells down-regulates miR-155 expression by 85%; IL-8 mRNA levels decreased of 70% and IL-8 protein levels by 11-fold
Chatterjee et al. (2014) [41]Lung cell dysfunctionHLMECs, HUVECsmiR-147bMiR-147b antagomir increased total and cell surface expression of ADAM15 in endothelial cells (p < 0.05)
Fabbri et al. (2014) [43]Cystic FibrosisCF bronchial epithelial IB3-1 cells infected by Pseudomonas aeruginosamiR-93IL-8 up-regulation in uninfected cells treated with antagomiR-93 (p < 0.01)
Zhang et al. (2015) [52]Various disordersAnimals: BALB/c mice.
Cells: 4T1 murine breast cancer cells		miR-10bAntagomir-10b and PTX delivered by D-Lip delays the growth of 4T1 tumors and reduce the lung metastases; up-regulated Hoxd10 in tumors (p < 0.01)
Zhou et al. (2015) [54]InfluenzaAnimals: six groups of mice (five mice per group), including control group.
Cells: MDCK cells		miR-2911Inhibitory effect of HS decoction on viral replication abolished by anti-miR2911 (p < 0.05)
Ge et al. (2016) [82]Lung fibrosisHumans: bronchial epithelia from lung transplant patients. Cells: primary fibroblasts from human lung explantsmiR-323a-3pAntagomirs for miR-323a-3p augment murine lung fibrosis after bleomycin injury (p < 0.05)
Podsiad et al. (2015) [31]PneumoniaAnimals: wild-type C57BL/6 mice.
Cells: human lung macrophages		miR-155AntimiR-155 improved lung bacterial clearance by 4.2-fold compared with controls
Zhou et al. (2016) [86]Systemic Lupus ErythematosusAnimals: C57BL/6J (B6) and B6.Cg-Mir155tm1.1Rsky/J mice.
Cells: Hepa 1-6 cells		miR-155Disease progression, reduced by 20% by in vivo silencing of miR-155 using antimiR-155
Bartoszewska et al. (2017) [36]HypoxiaHypoxia-induced human airway epithelial cell lines Calu-3 and 16HBE14o-; normal primary bronchial epithelial cellsmiR-200bManipulation of miRNA levels during normoxia and hypoxia by antagomirs increased CFTR mRNA levels (p < 0.05)
Ma et al. (2017) [71]HypoxiaAnimals: adult male Wistar rats.
Cells: PASMC cultured		miR-125amiR-125a antagomir mimicked the hypoxic damage effects to mitochondrial homeostasis (p < 0.05)
Morales et al. (2017) [87]SARS-CoVAnimals: Female mice.
Cells: mouse delayed brain tumor cells expressing the murine SARS-CoV receptor ACE2		svRNA-nsp3.1, svRNA-nsp3.2, svRNA-N, miR-877Antagomirs reduced partially (svRNA-nsp3.1), or totally (svRNA-nsp3.2, svRNA-N, miR-877), the luciferase activity
Shentu et al. (2017) [26]Lung fibrosisHuman bone marrow-derived Mesenchymal Stem CellsmiR-199a/b-3p, 21-5p, 630, 22-3p, 196a-5p, 199b-5p, 34a-5p, and 148a-3pAntagomiR-630 abrogated the effect of extracellular vesicles on CDH2 expression (p < 0.05)
Zhou et al. (2017) [88]InfluenzaAnimals: beagles.
Cells: MDCK cells		cfa-miR-143Anti-cfa-miR-143 caused upregulation of Igfbp5 in CIV-infected MDCK cells
Sharma et al. (2018) [58]HIV infection and substance abuseHuman monocyte derived macrophages, HPASMCsmiR-130aTransfection of HPASMCs with antagomir-130a ameliorated the extracellular vesicles-induced effect (p < 0.001)
Yuan et al. (2018) [69]TuberculosisFifty patients, 20 controls. Monocytes isolated from peripheral blood mononuclear cellsmiR-196b-5pAntagomir-196b-5p promoted Bacillus Calmette–Guérin uptake in MDMs or differentiated U937 cells (p < 0.05)
Tamgue et al. (2019) [89]TuberculosisBone marrow-derived macrophages generated from male BALB/c micemiR-143, miR-365Antagomirs for miR-143 and miR-365 decreased the intracellular growth of Mtb HN878, reduced the production of IL-6 (p < 0.001) and CCL5 (p < 0.01 for miR-143, p < 0.05 for miR-365), and promoted the apoptotic death of Mtb HN878-infected BMDMs (p < 0.01 for miR-143, p < 0.05 for miR-365)
Zhang et al. (2019) [90]InfluenzaAnimals: C57BL/6 mice.
Cells: human pulmonary epithelial cell line A549		miR-146aDownregulation of miR-146a inhibits Influenza A Virus replication by enhancing type I IFN response through TRAF6 in vitro and in vivo (p < 0.01)

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Murdaca, G.; Tonacci, A.; Negrini, S.; Greco, M.; Borro, M.; Puppo, F.; Gangemi, S. Effects of AntagomiRs on Different Lung Diseases in Human, Cellular, and Animal Models. Int. J. Mol. Sci. 2019, 20, 3938. https://doi.org/10.3390/ijms20163938

AMA Style

Murdaca G, Tonacci A, Negrini S, Greco M, Borro M, Puppo F, Gangemi S. Effects of AntagomiRs on Different Lung Diseases in Human, Cellular, and Animal Models. International Journal of Molecular Sciences. 2019; 20(16):3938. https://doi.org/10.3390/ijms20163938

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Murdaca, Giuseppe, Alessandro Tonacci, Simone Negrini, Monica Greco, Matteo Borro, Francesco Puppo, and Sebastiano Gangemi. 2019. "Effects of AntagomiRs on Different Lung Diseases in Human, Cellular, and Animal Models" International Journal of Molecular Sciences 20, no. 16: 3938. https://doi.org/10.3390/ijms20163938

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