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Enhanced Crosslinking Immunoprecipitation (eCLIP) Method for Efficient Identification of Protein-bound RNA in Mouse Testis
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Cold-inducible RNA-binding protein (CIRP) regulates target mRNA stabilization in the mouse testis

Zhiping Xia1, Xinmin Zheng, Hang Zheng

  • 1Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430071, PR China.

FEBS Letters
|July 24, 2012
PubMed

Insights

Cold-inducible RNA-binding protein (CIRP) is linked to male infertility. CIRP binds to mRNAs involved in reproduction, potentially explaining how heat stress impairs male fertility.

Area of Science:

  • Reproductive biology
  • Molecular biology
  • Biochemistry

Background:

  • Cold-inducible RNA-binding protein (CIRP) is vital in the testis but decreases with heat stress.
  • CIRP's role in male infertility is suspected but not fully understood.
  • Understanding CIRP's mechanism is crucial for addressing heat-induced male reproductive issues.

Purpose of the Study:

  • To elucidate the mechanism by which CIRP influences male reproduction.
  • To identify specific mRNAs regulated by CIRP in the testis.

Main Methods:

  • RNA-Binding Protein Immunoprecipitation-Microarray (RIP-Chip) assays.
  • Biotin pull-down assays to identify CIRP-binding mRNAs.
  • Analysis of mRNA targets and their functions.

Main Results:

  • CIRP binds to mRNAs critical for translation regulation, antioxidant activity, and reproduction.
  • Identified mRNAs are associated with male infertility.
  • The (Un)(n ≥2) sequence is a potential core recognition site for CIRP.
  • CIRP binding enhances the stabilization of its target mRNAs.

Conclusions:

  • CIRP plays a significant role in male reproductive function.
  • CIRP-mediated mRNA stabilization is a key mechanism affected by heat stress.
  • This study enhances understanding of heat stress-induced male infertility.

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