›› 2014, Vol. 41 ›› Issue (9): 199-205.

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Research Progress on Epigenetic Modifications during Spermatogenesis and Cryopreservation

PENG Wen-pei, ZENG Chang-jun   

  1. College of Animal Science and Technology, Sichuan Agricultural University, Ya'an 625014, China
  • Received:2014-03-04 Online:2014-09-20 Published:2014-09-24

Abstract: Epigenetics modification is the heritable changes in gene activity which are not involved in changes in the DNA sequences, including DNA methylation and chromatin remodeling, histone modification and non-coding RNAs, which plays important roles in gene expression, spermatogenesis, development and maturation. During spermatogenesis, normal morphology, motility and fertility were proven to be modulated by epigenetic changes. Cryopreservation causes dramatic changes of the sperm viability, motility and fertility, and the cryoinjury might be involved in some epigenetic factors. The epigenetic modifications involved in spermatogenesis and cryopreservation and their relationship were reviewed.

Key words: spermatogenesis; cryopreservation; epigenetic modification

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