Tuesday, October 26, 2021

Helix-loop-helix protein ID4 expressed in bovine Sertoli cells

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Via histochem

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Acta Histochem. 2021 Oct 19;123(8):151800. doi: 10.1016/j.acthis.2021.151800. Online ahead of print.

ABSTRACT

Stage- and cell type-specific biomarkers are important for understanding spermatogenesis in mammalian testis. The present study identified several testicular cell marker proteins in 6- and 24-month old bovine testes. In 6-month old bovine testes, spermatogonia and spermatocytes were detected but complete spermatogenesis occurred in 24-month old testes. The diameters of the seminiferous tubules increased significantly in the 24-month old testes compared with those in the 6-month old testes. Protein Gene Product 9.5 (PGP9.5), also known as the undifferentiated spermatogonium marker, and GATA4 (GATA binding protein 4), vimentin, and SOX9 (SRY-Box Transcription Factor 9) were detected in the basement membrane region. Interestingly, ID4 (inhibitor of DNA binding protein 4; previously known as the undifferentiated cell marker) proteins were located in the basement membrane region but their expression patterns were different from those of PGP9.5. Co-immunohistochemistry results showed that ID4 was detected in the Sertoli cells expressing vimentin and SOX9 in 6- and 24-month old bovine testes. This result indicated that ID4 is a putative biomarker of Sertoli cell in the bovine system, which is different from the rodent models. Thus, these results will contribute in understanding the process of spermatogenesis that is different in bovines compared to ot her species.

PMID:34673438 | DOI:10.1016/j.acthis.2021.151800

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