PCID2 is essential for spermatogonial differentiation by regulating alternative splicing.

ABSTRACT: The progression of spermatogenesis is under dynamic transcriptional regulation. As a subunit of the transcription-export complex 2 (TREX-2), PCI domain-containing protein 2 (PCID2), participates in RNA processing. However, the physiological functions of PCID2 in spermatogenesis remain poorly understood. Here, we generate germline conditional knockout (Pcid2-SKO) mice using Stra8-Cre, and it is found that Pcid2-SKO mice are infertile, exhibit extensive germ cell apoptosis, impaired spermatogonial differentiation, and failure of meiosis initiation. Single-cell transcriptome analysis reveals developmental arrest at the transition from type A to type B spermatogonia in Pcid2-SKO mice. Gene Set Enrichment Analysis (GSEA) demonstrates a significant decrease in the enrichment of mRNA splicing pat

SUBMITTER: Zhu F 

PROVIDER: S-EPMC12847546 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature