Статья

Hypoxia-Induced miR-148a Downregulation Contributes to Poor Survival in Colorectal Cancer

S. Nersisyan, A. Galatenko, M. Chekova, A. Tonevitsky,
2021

Hypoxia is an extensively investigated condition due to its contribution to various pathophysiological processes including cancer progression and metastasis formation. MicroRNAs (miRNAs) are well-known post-transcriptional gene expression regulators. However, their contribution to molecular response to hypoxia is highly dependent on cell/tissue types and causes of hypoxia. One of the most important examples is colorectal cancer, where no consensus on hypoxia-regulated miRNAs has been reached so far. In this work, we applied integrated mRNA and small RNA sequencing, followed by bioinformatics analysis, to study the landscape of hypoxia-induced miRNA and mRNA expression alterations in human colorectal cancer cell lines (HT-29 and Caco-2). A hypoxic microenvironment was chemically modeled using two different treatments: cobalt(II) chloride and oxyquinoline. Only one miRNA, hsa-miR-210-3p, was upregulated in all experimental conditions, while there were nine differentially expressed miRNAs under both treatments within the same cell line. Further bioinformatics analysis revealed a complex hypoxia-induced regulatory network: hypoxic downregulation of hsa-miR-148a-3p led to the upregulation of its two target genes, ITGA5 and PRNP, which was shown to be a factor contributing to tumor progression and poor survival in colorectal cancer patients.

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Версии

  • 1. Version of Record от 2021-05-31

Метаданные

Об авторах
  • S. Nersisyan
    Faculty of Biology and Biotechnology, HSE University, Moscow, Russia
  • A. Galatenko
    Faculty of Biology and Biotechnology, HSE University, Moscow, Russia, Faculty of Mechanics and Mathematics, Lomonosov Moscow State University, Moscow, Russia
  • M. Chekova
    Faculty of Biology and Biotechnology, HSE University, Moscow, Russia
  • A. Tonevitsky
    Faculty of Biology and Biotechnology, HSE University, Moscow, Russia
Название журнала
  • Frontiers in Genetics
Том
  • 12
Страницы
  • 662468
Издатель
  • Frontiers
Тип документа
  • journal article
Тип лицензии Creative Commons
  • CC BY
Правовой статус документа
  • Свободная лицензия
Источник
  • dimensions