ijms-logo

Journal Browser

Journal Browser

Cellular Oxygen Homeostasis—3rd Edition

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Biology".

Deadline for manuscript submissions: closed (20 September 2025) | Viewed by 2930

Special Issue Editor


E-Mail Website
Guest Editor
Department of Anesthesia and General Intensive Care, Clinical Department of Anesthesia, Medizinische Universität Wien, Vienna, Austria
Interests: cell biology of the lung and heart; organ protection; signaling transduction in the lung; experimental anesthesiology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Oxygen facilitates the effective production of the cellular energy currency ATP. Cells sense and respond to the partial pressure of oxygen in their environment using a cell-type-specific toolkit of oxygen-sensitive ion channels, receptors, second messengers, transcription factors, and other enzymes. Cellular oxygen homeostasis is a prerequisite for proper cellular function and survival, and both an under-supply and excess of oxygen induce oxidative stress. Dysregulation induces the increased formation of reactive oxygen species, which override the redox buffering capability and modify lipids and proteins. The changes in enzymatic activity can affect all aspects of cellular function, including metabolism, development, differentiation, cellular secretions, epigenetic mechanisms, and gene expression. A good insight into these molecular mechanisms is a prerequisite to understand processes such as aging and diseases such as stroke, ischemia, malignant transformations, and metastasis to finally develop new pharmacological treatments. We invite interested investigators in this field to contribute original articles or reviews to this Special Issue with a focus on molecular mechanisms of cellular responses to different oxygen conditions, whether it be with the help of in vitro models, animal models, or in humans, which might provide insight into clinically relevant questions.

Dr. Verena Tretter
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • cellular oxygen homeostasis
  • redox signaling
  • cellular oxygen sensing
  • hypoxia
  • hyperoxia

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • Reprint: MDPI Books provides the opportunity to republish successful Special Issues in book format, both online and in print.

Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

15 pages, 1659 KB  
Article
Estrogen Attenuates Hypoxia-Induced TRPV1 Activation and Calcium Overload via HIF-1α Suppression in MCF-7 and CHO Cells
by Bilal Çiğ
Int. J. Mol. Sci. 2025, 26(22), 11110; https://doi.org/10.3390/ijms262211110 - 17 Nov 2025
Viewed by 385
Abstract
Hypoxia is a major global health concern, particularly in premature infants and cancer, where it promotes intracellular calcium accumulation and cell death. The transient receptor potential vanilloid 1 (TRPV1) channel has been implicated in calcium dysregulation and oxidative stress under hypoxic conditions, while [...] Read more.
Hypoxia is a major global health concern, particularly in premature infants and cancer, where it promotes intracellular calcium accumulation and cell death. The transient receptor potential vanilloid 1 (TRPV1) channel has been implicated in calcium dysregulation and oxidative stress under hypoxic conditions, while estrogen (17β-estradiol, E2) is known to modulate TRPV1 activity and redox balance. This study aimed to investigate the impact of E2 on TRPV1 expression, hypoxia-inducible factor-1α (HIF-1α), and calcium signaling in MCF-7 breast cancer cells (ERα-positive) and TRPV1-transfected CHO cells (ERα-negative). Four experimental groups were established: normoxia, E2, hypoxia, and hypoxia + E2. Hypoxia was induced by CoCl2 (200 µM, 24 h), while E2 treatment was applied at 10 nM for 24 h. Western blot analysis revealed that both TRPV1 and HIF-1α expression were upregulated under hypoxia but significantly reduced by E2. Fura-2 fluorescence assays revealed that hypoxia increased cytosolic Ca2+ levels, whereas E2 reversed this elevation. Moreover, TRPV1 activation by capsaicin induced marked Ca2+ influx under hypoxia, which was attenuated by E2 treatment. These findings demonstrate that E2 mitigates hypoxia-induced toxicity by modulating TRPV1-mediated Ca2+ signaling and HIF-1α expression, underscoring the protective role of E2 and identifying TRPV1 as a potential therapeutic target in estrogen-responsive tumors. Full article
(This article belongs to the Special Issue Cellular Oxygen Homeostasis—3rd Edition)
Show Figures

Figure 1

25 pages, 3243 KB  
Article
Candidate Signature miRNAs from Secreted miRNAome of Human Lung Microvascular Endothelial Cells in Response to Different Oxygen Conditions: A Pilot Study
by Wolfgang Schaubmayr, Matthias Hackl, Marianne Pultar, Bahil D. Ghanim, Klaus U. Klein, Johannes A. Schmid, Thomas Mohr and Verena Tretter
Int. J. Mol. Sci. 2024, 25(16), 8798; https://doi.org/10.3390/ijms25168798 - 13 Aug 2024
Cited by 1 | Viewed by 1854
Abstract
Oxygen conditions in the lung determine downstream organ functionality by setting the partial pressure of oxygen, regulating the redox homeostasis and by activating mediators in the lung that can be propagated in the blood stream. Examples for such mediators are secreted soluble or [...] Read more.
Oxygen conditions in the lung determine downstream organ functionality by setting the partial pressure of oxygen, regulating the redox homeostasis and by activating mediators in the lung that can be propagated in the blood stream. Examples for such mediators are secreted soluble or vesicle-bound molecules (proteins and nucleic acids) that can be taken up by remote target cells impacting their metabolism and signaling pathways. MicroRNAs (miRNAs) have gained significant interest as intercellular communicators, biomarkers and therapeutic targets in this context. Due to their high stability in the blood stream, they have also been attributed a role as “memory molecules” that are able to modulate gene expression upon repeated (stress) exposures. In this study, we aimed to identify and quantify released miRNAs from lung microvascular endothelial cells in response to different oxygen conditions. We combined next-generation sequencing (NGS) of secreted miRNAs and cellular mRNA sequencing with bioinformatic analyses in order to delineate molecular events on the cellular and extracellular level and their putative interdependence. We show that the identified miRNA networks have the potential to co-mediate some of the molecular events, that have been observed in the context of hypoxia, hyperoxia, intermittent hypoxia and intermittent hypoxia/hyperoxia. Full article
(This article belongs to the Special Issue Cellular Oxygen Homeostasis—3rd Edition)
Show Figures

Figure 1

Back to TopTop