Related Experiment Video

Updated: Aug 31, 2025

Functional Assessment of Kinesin-7 CENP-E in Spermatocytes Using In Vivo Inhibition, Immunofluorescence and Flow Cytometry
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Functional Assessment of Kinesin-7 CENP-E in Spermatocytes Using In Vivo Inhibition, Immunofluorescence and Flow Cytometry

Published on: December 28, 2021

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CDKN2AIP is critical for spermiogenesis and germ cell development

Yuming Cao1,2,3, Qi Sun4, Zhenlie Chen1,2,3

  • 1Reproductive Medicine Center, Zhongnan Hospital of Wuhan University, Wuhan, China.

Cell & Bioscience
|August 21, 2022
PubMed
Abstract

Insights

CDKN2AIP is crucial for male fertility, regulating sperm development and germ cell survival. Its absence causes sperm defects and age-dependent infertility in mice, highlighting its role in spermatogenesis.

Area of Science:

  • Reproductive Biology
  • Molecular Genetics
  • Cell Biology

Background:

  • CDKN2AIP, an RNA-binding protein, is vital for stem cell pluripotency and differentiation.
  • Studies suggest Cdkn2aip is essential for spermatogonial self-renewal and proliferation via Wnt signaling.
  • Mechanisms of Cdkn2aip in regulating spermatogenesis remain largely unknown.

Purpose of the Study:

  • To investigate the role and mechanisms of CDKN2AIP in male germ cell development and spermatogenesis.
  • To elucidate the function of Cdkn2aip in spermiogenesis and overall male fertility.

Main Methods:

  • Analysis of Cdkn2aip expression in spermatocytes and spermatids.
  • Phenotypic characterization of Cdkn2aip knockout (Cdkn2aip-/-) mice.
  • In vitro knockdown studies to assess cellular effects.

Main Results:

  • CDKN2AIP is expressed in spermatocytes and spermatids, participating in spermiogenesis.
  • Cdkn2aip-/- mice display sperm head defects and age-dependent germ cell loss.
  • Loss of Cdkn2aip leads to synapsis failure, impaired DNA repair, and increased apoptosis in spermatocytes.

Conclusions:

  • CDKN2AIP plays a critical role in spermiogenesis and germ cell development.
  • Findings provide insights into the molecular mechanisms underlying Cdkn2aip's function in male reproduction.
  • CDKN2AIP is essential for maintaining male fertility and proper sperm formation.
Keywords:
DNA double-strand break repairGerm cell developmentMale infertilityProtamine replacementSpermiogenesis

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