miR-20b and miR-451a Are Involved in Gastric Carcinogenesis through the PI3K/AKT/mTOR Signaling Pathway: Data from Gastric Cancer Patients, Cell Lines and Ins-Gas Mouse Model.

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ID: 91456
2020
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Abstract
Gastric cancer (GC) is one of the most common and lethal gastrointestinal malignancies worldwide. Many studies have shown that development of GC and other malignancies is mainly driven by alterations of cellular signaling pathways. MicroRNAs (miRNAs) are small noncoding molecules that function as tumor-suppressors or oncogenes, playing an essential role in a variety of fundamental biological processes. In order to understand the functional relevance of miRNA dysregulation, studies analyzing their target genes are of major importance. Here, we chose to analyze two miRNAs, miR-20b and miR-451a, shown to be deregulated in many different malignancies, including GC. Deregulated expression of miR-20b and miR-451a was determined in GC cell lines and the INS-GAS mouse model. Using Western Blot and luciferase reporter assay we determined that miR-20b directly regulates expression of and and miR-451a: and . Loss-of-function experiments revealed that down-regulation of miR-20b and up-regulation of miR-451a expression exhibits an anti-tumor effect in vitro (miR-20b: reduced viability, colony formation, increased apoptosis rate, and miR-451a: reduced colony forming ability). To summarize, the present study identified that expression of miR-20b and miR-451a are deregulated in vitro and in vivo and have a tumor suppressive role in GC through regulation of the PI3K/AKT/mTOR signaling pathway.
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streleckiene2020mir20binternational Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Streleckiene, Greta;Inciuraite, Ruta;Juzenas, Simonas;Salteniene, Violeta;Steponaitiene, Ruta;Gyvyte, Ugne;Kiudelis, Gediminas;Leja, Marcis;Ruzgys, Paulius;Satkauskas, Saulius;Kupcinskiene, Eugenija;Franke, Sabine;Thon, Cosima;Link, Alexander;Kupcinskas, Juozas;Skieceviciene, Jurgita;
Journal International journal of molecular sciences
Year 2020
DOI
E877
URL
Keywords
gastric cancer micrornas pi3k/akt/mtor signaling pathway mir-20b mir-451a Innovation health young adults university aerobic fitness

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