SRSF2 is required for mRNA splicing during spermatogenesis

Area of Science:

• Molecular Biology
• Reproductive Biology
• Genetics

Background:

• RNA splicing is crucial for biological functions, but its role in spermatogenesis remains unclear.
• Alternative splicing mechanisms during male germ cell development require further investigation.

Purpose of the Study:

• To investigate the function of Serine/arginine-rich splicing factor 2 (SRSF2) in alternative splicing and male reproduction.
• To elucidate the mechanisms by which SRSF2 regulates spermatogenesis.

Main Methods:

• Male germ cell-specific deletion of Srsf2 using Stra8-Cre.
• RNA sequencing (RNA-seq) and LACE-seq to analyze SRSF2 regulatory networks.
• Analysis of spermatogenesis, germ cell differentiation, and meiosis.

Main Results:

• Srsf2 deletion in male germ cells led to complete infertility and defective spermatogenesis.
• SRSF2 regulates critical events in spermatogenesis, including meiosis, DNA recombination, and chromosome segregation.
• SRSF2 directly impacts the expression and alternative splicing of key genes like Stra8, Stag3, and Atr.

Conclusions:

• SRSF2 plays a vital role in spermatogenesis and male fertility through the regulation of alternative splicing.
• SRSF2 is a critical factor for male reproductive development and function.