posttranscriptional control of the hypoxic response by rna-binding proteins and micrornas

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ID: 220681
2011
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Abstract
Mammalian gene expression patterns change profoundly in response to low oxygen levels. These changes in gene expression programs are strongly influenced by post-transcriptional mechanisms mediated by mRNA-binding factors: RNA-binding proteins (RBPs) and microRNAs (miRNAs). Here, we review the RBPs and miRNAs that modulate mRNA turnover and translation in response to hypoxic challenge. RBPs such as HuR (human antigen R), PTB (polypyrimidine tract-binding protein), heterogeneous nuclear ribonucleoproteins (hnRNPs), tristetraprolin, nucleolin, iron-response element binding proteins (IRPs), and cytoplasmic polyadenylation-element-binding proteins (CPEBs), selectively bind to numerous hypoxia-regulated transcripts and play a major role in establishing hypoxic gene expression patterns. MiRNAs including miR-210, miR-373, and miR-21 associate with hypoxia-regulated transcripts and further modulate the levels of the encoded proteins to implement the hypoxic gene expression profile. We discuss the potent regulation of hypoxic gene expression by RBPs and miRNAs and their integrated actions in the cellular hypoxic response.
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egorospe2011frontiersposttranscriptional Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Myriam eGorospe;Kumiko eTominaga;Xue eWu;Michael eFähling;Mircea eIvan
Journal international journal of nanomedicine
Year 2011
DOI
10.3389/fnmol.2011.00007
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