SPAG6 c.900 T>C affects boar semen quality and blood-testis barrier function by creating a new splice acceptor site.

Rong Bai, Dake Chen, Hao Xiong, Huibin Song, Tiansu Wang, Xinpeng Yang, Jinhua Tang, Yue Feng, Jialian Li, Fenge Li

Animal genetics 2023 Aug

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Sperm associated antigen 6 (SPAG6) acts as a scaffolding protein in the center of the flagellar axoneme and has an impact on the maturation of the motility of mammalian sperm flagella and the maintenance of sperm structure. In our previous research, SPAG6 c.900 T>C in exon 7 and exon 7 skipped transcript was identified by analyzing RNA-seq data of testicular tissues from 60 day (sexually immature) and 180 day (sexually mature) Large White boars. Herein, we found porcine SPAG6 c.900 T>C to be associated with semen quality traits in Duroc, Large White and Landrace pigs. SPAG6 c.900 C can generate a new splice acceptor site, inhibit the occurrence of SPAG6 exon 7 skipping to a certain extent, thereby promote the growth of Sertoli cells and maintain the normal blood-testis barrier function. This study provides new insights into the molecular regulation of spermatogenesis and a new genetic marker for the improvement of semen quality in pigs. © 2023 Stichting International Foundation for Animal Genetics.

Citation

Rong Bai, Dake Chen, Hao Xiong, Huibin Song, Tiansu Wang, Xinpeng Yang, Jinhua Tang, Yue Feng, Jialian Li, Fenge Li. SPAG6 c.900 T>C affects boar semen quality and blood-testis barrier function by creating a new splice acceptor site. Animal genetics. 2023 Aug;54(4):446-456