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Keywords = intrapancreatic microbiota

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19 pages, 1038 KiB  
Review
The Role of Microbiota in Pancreatic Cancer
by Valerio Papa, Tommaso Schepis, Gaetano Coppola, Michele Francesco Chiappetta, Livio Enrico Del Vecchio, Tommaso Rozera, Giuseppe Quero, Antonio Gasbarrini, Sergio Alfieri and Alfredo Papa
Cancers 2023, 15(12), 3143; https://doi.org/10.3390/cancers15123143 - 11 Jun 2023
Cited by 17 | Viewed by 4239
Abstract
Pancreatic cancer (PC) has an unfavorable prognosis with few effective therapeutic options. This has led researchers to investigate the possible links between microbiota and PC. A disrupted gut microbiome can lead to chronic inflammation, which is involved in the pathogenesis of PC. In [...] Read more.
Pancreatic cancer (PC) has an unfavorable prognosis with few effective therapeutic options. This has led researchers to investigate the possible links between microbiota and PC. A disrupted gut microbiome can lead to chronic inflammation, which is involved in the pathogenesis of PC. In addition, some bacterial strains can produce carcinogens that promote the growth of cancer cells. Research has also focused on pancreatic and oral microbiota. Changes in these microbiota can contribute to the development and progression of PC. Furthermore, patients with periodontal disease have an increased risk of developing PC. The potential use of microbiota as a prognostic marker or to predict patients’ responses to chemotherapy or immunotherapy is also being explored. Overall, the role of microbiota—including the gut, pancreatic, and oral microbiota—in PC is an active research area. Understanding these associations could lead to new diagnostic and therapeutic targets for this deadly disease. Full article
(This article belongs to the Special Issue Advanced Research in Oncology in 2023)
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14 pages, 5772 KiB  
Article
The Pancreatic Microbiome is Associated with Carcinogenesis and Worse Prognosis in Males and Smokers
by Jaideep Chakladar, Selena Z. Kuo, Grant Castaneda, Wei Tse Li, Aditi Gnanasekar, Michael Andrew Yu, Eric Y. Chang, Xiao Qi Wang and Weg M. Ongkeko
Cancers 2020, 12(9), 2672; https://doi.org/10.3390/cancers12092672 - 18 Sep 2020
Cited by 64 | Viewed by 4618
Abstract
An intra-pancreatic microbiota was recently discovered in several prominent studies. Since pancreatic adenocarcinoma (PAAD) is one of the most lethal cancers worldwide, and the intratumor microbiome was found to be a significant contributor to carcinogenesis in other cancers, this study aims to characterize [...] Read more.
An intra-pancreatic microbiota was recently discovered in several prominent studies. Since pancreatic adenocarcinoma (PAAD) is one of the most lethal cancers worldwide, and the intratumor microbiome was found to be a significant contributor to carcinogenesis in other cancers, this study aims to characterize the PAAD microbiome and elucidate how it may be associated with PAAD prognosis. We further explored the association between the intra-pancreatic microbiome and smoking and gender, which are both risk factors for PAAD. RNA-sequencing data from The Cancer Genome Atlas (TCGA) were used to infer microbial abundance, which was correlated to clinical variables and to cancer and immune-associated gene expression, to determine how microbes may contribute to cancer progression. We discovered that the presence of several bacteria species within PAAD tumors is linked to metastasis and immune suppression. This is the first large-scale study to report microbiome-immune correlations in human pancreatic cancer samples. Furthermore, we found that the increased prevalence and poorer prognosis of PAAD in males and smokers are linked to the presence of potentially cancer-promoting or immune-inhibiting microbes. Further study into the roles of these microbes in PAAD is imperative for understanding how a pro-tumor microenvironment may be treated to limit cancer progression. Full article
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