ArticleNucleic acids research2024
PTBP1 mediates Sertoli cell actin cytoskeleton organization by regulating alternative splicing of actin regulators.
Article in Nucleic acids research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Sertoli cell oxidative stress as a convergent hazard endpoint for environmental toxicants: A systematic review, meta-analysis, and AOP-based assessment.Redox biology · 2026Review
- Nitric oxide drives proteomic diversity through alternative splicing.Molecular cell · 2026Article
- Generation and characterization of a Cre-inducible MAP3K1 gain-of-function model.Disease models & mechanisms · 2026Article
- PTBP1 supports mouse spermatogenesis by facilitating cytoskeletal organization through the mTORC2-PKCα pathway in Sertoli cells.Communications biology · 2026Article
- Icariin alleviates triptolide-induced testicular vacuolization via modulating germline ferroptosis and blood-testis barrier integrity.Frontiers in cell and developmental biology · 2026Article
- COPS5 is Essential for Sertoli Cell Function and Male Fertility in Mice.bioRxiv : the preprint server for biology · 2025Article
- Chemoproteomic Approach for Identifying Nuclear Arsenite-Binding Proteins.Chemical research in toxicology · 2025Article
- hnRNPC Functions with HuR to Regulate Alternative Splicing in an m6A-Dependent Manner and is Essential for Meiosis.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Genome-Wide Identification of Alternative Splicing inMicroorganisms · 2025Article
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Abstract
Spermatogenesis is a biological process within the testis that produces haploid spermatozoa for the continuity of species. Sertoli cells are somatic cells in the seminiferous epithelium that orchestrate spermatogenesis. Cyclic reorganization of the Sertoli cell actin cytoskeleton is vital for spermatogenesis, but the underlying mechanism remains largely unclear. Here, we report that the RNA-binding protein PTBP1 controls Sertoli cell actin cytoskeleton reorganization by programming alternative splicing of actin cytoskeleton regulators. This splicing control enables ectoplasmic specializations, the actin-based adhesion junctions, to maintain the blood-testis barrier and support spermatid transport and transformation. Particularly, we show that PTBP1 promotes actin bundle formation by repressing the inclusion of exon 14 of Tnik, a kinase present at the ectoplasmic specialization. Our results thus reveal a novel mechanism wherein Sertoli cell actin cytoskeleton dynamics are controlled post-transcriptionally by utilizing functionally distinct isoforms of actin regulatory proteins, and PTBP1 is a critical regulatory factor in generating such isoforms.
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