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Updated: Apr 5, 2026

Isolation of Sertoli Cells and Peritubular Cells from Rat Testes
Published on: February 8, 2016
The Src non-receptor tyrosine kinase paradigm: New insights into mammalian Sertoli cell biology
Katarzyna Chojnacka1, Dolores D Mruk1
1Center for Biomedical Research, Population Council, New York, USA.
Abstract:
Src kinases are non-receptor tyrosine kinases that phosphorylate diverse substrates, which control processes such as cell proliferation, differentiation and survival; cell adhesion; and cell motility. c-Src, the prototypical member of this protein family, is widely expressed by several organs that include the testis. In the seminiferous epithelium of the adult rat testis, c-Src is highest at the tubule lumen during the release of mature spermatids. Other studies show that testosterone regulates spermatid adhesion to Sertoli cells via c-Src, indicating Src phosphorylates key substrates that prompt the disassembly of Sertoli cell-spermatid junctions. A more recent in vitro study reveals that c-Src participates in the internalization of proteins that constitute the blood-testis barrier, which is present between Sertoli cells, suggesting a similar mechanism of junction disassembly is at play during spermiation. In this review, we discuss recent findings on c-Src, with an emphasis on its role in spermatogenesis in the mammalian testis.
Insights
The Src kinase (c-Src) plays a crucial role in mammalian spermatogenesis. This review highlights c-Src
Area of Science:
- Cell Biology
- Reproductive Biology
- Biochemistry
Background:
- Src kinases are non-receptor tyrosine kinases regulating critical cellular processes.
- c-Src, a key member, is expressed in the mammalian testis.
- Testicular c-Src is involved in spermatid release and blood-testis barrier dynamics.
Purpose of the Study:
- To review the recent findings on c-Src.
- To emphasize the role of c-Src in spermatogenesis.
- To discuss c-Src's function in mammalian testis.
Main Methods:
- Literature review of studies on c-Src.
- Analysis of c-Src expression patterns in the testis.
- Investigation of c-Src's role in cell adhesion and junction disassembly.
Main Results:
- c-Src levels peak during mature spermatid release in rat testis.
- Testosterone regulates spermatid adhesion via c-Src, impacting Sertoli cell junctions.
- c-Src is implicated in the internalization of blood-testis barrier proteins.
Conclusions:
- c-Src is vital for spermatogenesis, particularly in spermiation.
- Mechanisms of junction disassembly by c-Src are relevant to both spermatid release and barrier function.
- Further research on c-Src in the mammalian testis is warranted.
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