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Factors affecting Sertoli cell function in the testis.

Publication ,  Journal Article
Tindall, DJ; Tash, JS; Means, AR
Published in: Environ Health Perspect
April 1981

The Sertoli cell is the primary target for FSH action in the mammalian testis. These cells contain the majority of testicular plasma membrane receptors for this hormone. Receptor occupancy is directly correlated with a stimulation of adenylyl cyclase and a decrease in the activity of a cytoplasmic Ca++-sensitive cAMP phosphodiesterase. Regulation of these two enzymes allows increased intracellular accumulation of cAMP, activation of cAMP-dependent protein kinase and phosphorylation of a variety of protein substrates. All of these events occur within the first 30 min following exposure of isolated Sertoli cells to FSH. RNA and protein synthesis are also enhanced by FSH. Previous studies have suggested that this gonadotropin may augment the overall cellular synthesis of proteins. Our results reveal that protein kinase inhibitor (PKI) is selectively elevated by FSH both in vivo and in vitro. PKI thus becomes the initial intracellular protein whose synthesis is under FSH control. In addition to effects on protein synthesis, FSH also positively modulates the secretion of several specific proteins. One of the proteins in this latter category is androgen binding protein (ABP). Again, regulation can be observed both in vivo and in vitro. Elevated synthesis of PKI occurs prior to demonstrable secretion of ABP. Both of these events occur subsequent to the effects of FSH on cAMP metabolism. Indeed cAMP (or any of several nonhydrolyzable derivatives) can substitute for FSH in vitro. The temporal sequence of events subsequent to hormone binding and cAMP production are identical, but occur more rapidly. Together these data support the hypothesis that most of the biochemical steps leading to the synthesis and secretion of proteins by FSH are regulated by elevated levels of cAMP.

Duke Scholars

Published In

Environ Health Perspect

DOI

ISSN

0091-6765

Publication Date

April 1981

Volume

38

Start / End Page

5 / 10

Location

United States

Related Subject Headings

  • Toxicology
  • Testosterone
  • Spermatogenesis
  • Sertoli Cells
  • Receptors, FSH
  • Receptors, Cell Surface
  • Protein Kinases
  • Male
  • Kinetics
  • Intracellular Signaling Peptides and Proteins
 

Citation

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Tindall, D. J., Tash, J. S., & Means, A. R. (1981). Factors affecting Sertoli cell function in the testis. Environ Health Perspect, 38, 5–10. https://doi.org/10.1289/ehp.81385
Tindall, D. J., J. S. Tash, and A. R. Means. “Factors affecting Sertoli cell function in the testis.Environ Health Perspect 38 (April 1981): 5–10. https://doi.org/10.1289/ehp.81385.
Tindall DJ, Tash JS, Means AR. Factors affecting Sertoli cell function in the testis. Environ Health Perspect. 1981 Apr;38:5–10.
Tindall, D. J., et al. “Factors affecting Sertoli cell function in the testis.Environ Health Perspect, vol. 38, Apr. 1981, pp. 5–10. Pubmed, doi:10.1289/ehp.81385.
Tindall DJ, Tash JS, Means AR. Factors affecting Sertoli cell function in the testis. Environ Health Perspect. 1981 Apr;38:5–10.

Published In

Environ Health Perspect

DOI

ISSN

0091-6765

Publication Date

April 1981

Volume

38

Start / End Page

5 / 10

Location

United States

Related Subject Headings

  • Toxicology
  • Testosterone
  • Spermatogenesis
  • Sertoli Cells
  • Receptors, FSH
  • Receptors, Cell Surface
  • Protein Kinases
  • Male
  • Kinetics
  • Intracellular Signaling Peptides and Proteins