Journal of International Reproductive Health/Family Planning ›› 2021, Vol. 40 ›› Issue (4): 323-327.doi: 10.12280/gjszjk.20200672

• Review • Previous Articles     Next Articles

Research Progress of CRISP2 Protein

YAO Yu-tong, QI Cong, Dina Yeernuer, WU Shi-qi, MA Jie, LIU Qiang()   

  1. School of Basic Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
  • Received:2020-11-30 Published:2021-07-15 Online:2021-07-27
  • Contact: LIU Qiang E-mail:qliu0122@shsmu.edu.cn

Abstract:

CRISPs (cysteine rich secretory proteins) family contains four members. CRISP2 is the only member expressed in testicles, with high tissue specificity. CRISP2 is expressed and secreted by spermatocytes. This process won′t be affected by androgen. CRISP2 scatters in the seminiferous epithelium and is located at the junction of spermatocytes and Sertoli cells, helping spermatocytes connect to Sertoli cells. Afterward, CRISP2 goes with round spermatids and elongated spermatids, combines to the tail and the acrosome in the head of spermatozoa. CRISP2 probably modulate the influx of Ca2+ by combining with RyR3. CRISP2 may also act in modulating other receptors like inhibiting K+ channels. Research indicates that CRISP2 participates in the maturation and capacitation of spermatozoon all along, and also works in sperm-oocyte fusion. In this review, we will focus on the expression and distribution of CRISP2 in testicles as well as its regulation and function.

Key words: CRISP2, Sperm-oocyte fusion, Sperm-ovum interactions, Infertility, male, Asthenozoospermia, TPX1