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Journal of Andrology, Vol 16, Issue 1 28-35, Copyright © 1995 by The American Society of Andrology

JOURNAL ARTICLE

Secreted products and extracellular matrix from testicular peritubular myoid cells influence androgen-binding protein secretion by Sertoli cells in culture

E. W. Thompson, A. W. Blackshaw and S. S. Raychoudhury
Division of Science and Technology, Griffith University, Brisbane, Queensland, Australia.

Metabolic cooperation mediated by secreted factors between Sertoli cells and peritubular myoid cells has been well documented. We have confirmed that factors secreted by peritubular myoid cells modulate androgen-binding protein (ABP) secretion by Sertoli cells and shown further that this can also be achieved with peritubular myoid cell extracellular matrix (ECM). While peritubular myoid cell ECM potentiated the stimulatory effect of dibutyryl cyclic AMP on Sertoli cell ABP secretion, secreted factors did not, suggesting that the two components influence Sertoli cells through distinct mechanisms. We also tested other factors and other cell lines for effects on ABP production by Sertoli cells. The addition of human plasma fibronectin or conditioned medium from the basement membrane-producing Englebreth-Holm-Swarm sarcoma also stimulated ABP secretion by Sertoli cells. Cocultures of epithelial Sertoli cells with the cells of mesenchymal origin, such as testicular peritubular myoid cells, embryonic skin fibroblasts, and bladder smooth muscle cells, significantly stimulated ABP secretion by Sertoli cells, but coculture with the epithelial-derived Martin-Darby canine kidney cell line had no effect on Sertoli cell-secreted ABP levels. Our data further define the epithelial-mesenchymal cell interaction that exists between Sertoli cells and peritubular myoid cells in the mammalian testis.


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C Tilmann and B Capel
Mesonephric cell migration induces testis cord formation and Sertoli cell differentiation in the mammalian gonad
Development, January 7, 1999; 126(13): 2883 - 2890.
[Abstract] [PDF]


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Copyright © 1995 by The American Society of Andrology.