›› 2018, Vol. 45 ›› Issue (9): 2500-2506.doi: 10.16431/j.cnki.1671-7236.2018.09.020

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Research Progress on Function and Regulation Mechanism of Specific GPx5 of Mammalian Epididymis

LUAN Zhaojin, ZHANG Jiaxin   

  1. Key Laboratory of Animal Genetics, Breeding and Reproduction in Inner Mongolia Autonomous Region, College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China
  • Received:2018-03-14 Online:2018-09-20 Published:2018-09-26

Abstract:

The sperm maturation in the epididymis is the key to mammalian male gametes gaining fertility capacity.Glutathione peroxidase-5 (GPx5) has a strong antioxidant effect as an antioxidant enzyme specifically expressed in the epididymis,which can regulate the concentration of reactive oxygen species in the epididymis microenvironment and protect spermatozoa from lipid peroxidation to maintain DNA integrity of sperm.GPx5 may also have a certain effect on sperm motility and acrosome reaction.The chromosomal location and the number of exons of GPx5 gene have certain interspecific differences.The expression of GPx5 gene is specific in different species,parts and developmental stages.The gene expression is regulated by factors such as androgen,PEA3 factor and ETV4 family.The authors reviewed the research advance on the structure and location,expression characteristics,function and regulation mechanism of specific GPx5 gene of mammalian epididymis in order to provide theoretical basis for further study on sperm antioxidant mechanism and improving male animal fertility.

Key words: epididymis; GPx5 gene; expression characteristics; anti-oxidation; sperm

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