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Alternative polyadenylation and RNA-binding proteins.

Ayse Elif Erson-Bensan1

  • 1Department of Biological SciencesOrta Dogu Teknik Universitesi (ODTU) (METU), Universiteler Mahallesi, Cankaya, Ankara, Turkey erson@metu.edu.tr.

Journal of Molecular Endocrinology
|May 22, 2016
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Summary

RNA-binding proteins (RBPs) influence gene expression by interacting with alternative polyadenylation (APA) sites on messenger RNAs (mRNAs). This review explores how RBPs regulate APA isoforms, impacting mRNA stability and translation for potential clinical applications.

Keywords:
3′-UTRAPARBPRNA-binding proteinalternative polyadenylation

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • MicroRNA (miRNA)-based gene regulation is increasingly understood.
  • 3'-untranslated regions (3'-UTRs) of mRNAs contain cis-elements for miRNA and RNA-binding protein (RBP) binding, affecting mRNA stability and translation.
  • Alternative polyadenylation (APA) generates mRNA isoforms with varying 3'-UTR lengths, leading to differential regulation.

Purpose of the Study:

  • To review the roles of RNA-binding proteins (RBPs) in regulating alternative polyadenylation (APA).
  • To elucidate the mechanisms by which RBPs act on APA-generated mRNA isoforms.
  • To highlight the implications of APA and RBP interactions for mechanistic and clinical research.

Main Methods:

  • Literature review focusing on RBPs involved in APA.
  • Analysis of mechanisms governing RBP action on APA isoforms.
  • Synthesis of current knowledge on APA regulation by RBPs.

Main Results:

  • RBPs play a crucial role in the regulation of APA.
  • RBPs can bind to specific cis-elements within 3'-UTRs, influencing the choice of polyadenylation site.
  • APA-generated isoforms, differing in 3'-UTR length, are differentially regulated by RBPs, impacting mRNA fate.

Conclusions:

  • Understanding the interplay between APA and RBPs is essential for comprehending gene expression regulation.
  • This knowledge holds promise for biomarker discovery and the development of novel therapeutic strategies.
  • Further research into RBP-APA interactions can advance both fundamental biology and clinical medicine.