AI Article Synopsis

  • The study investigates how the microenvironment in buffalo seminiferous tubules changes with age, impacting spermatogonial stem cells (SSCs) and spermatogenesis, although the exact mechanisms are not yet fully understood.
  • RNA sequencing (RNA-seq) compared gene expression profiles between pre-pubertal (PUB) and adult (ADU) buffalo, identifying 17,299 genes, with 13,714 showing significant differences in expression levels.
  • The findings reveal that many genes related to SSC identity were upregulated in ADU, while genes essential for sperm differentiation were downregulated in PUB, shedding light on the developmental mechanisms of buffalo SSCs for future research.

Article Abstract

The microenvironment in the seminiferous tubules of buffalo changes with age, which affects the self-renewal and growth of spermatogonial stem cells (SSCs) and the process of spermatogenesis, but the mechanism remains to be elucidated. RNA-seq was performed to compare the transcript profiles of pre-pubertal buffalo (PUB) and adult buffalo (ADU) seminiferous tubules. In total, 17,299 genes from PUB and ADU seminiferous tubules identified through RNA-seq, among which 12,271 were expressed in PUB and ADU seminiferous tubules, 4,027 were expressed in only ADU seminiferous tubules, and 956 were expressed in only PUB seminiferous tubules. Of the 17,299 genes, we identified 13,714 genes that had significant differences in expression levels between PUB and ADU through GO enrichment analysis. Among these genes, 5,342 were significantly upregulated and possibly related to the formation or identity of the surface antigen on SSCs during self-renewal; 7,832 genes were significantly downregulated, indicating that genes in PUB seminiferous tubules do not participate in the biological processes of sperm differentiation or formation in this phase compared with those in ADU seminiferous tubules. Subsequently, through the combination with KEGG analysis, we detected enrichment in a number of genes related to the development of spermatogonial stem cells, providing a reference for study of the development mechanism of buffalo spermatogonial stem cells in the future. In conclusion, our data provide detailed information on the mRNA transcriptomes in PUB and ADU seminiferous tubules, revealing the crucial factors involved in maintaining the microenvironment and providing a reference for further in vitro cultivation of SSCs.

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http://dx.doi.org/10.1111/rda.13900DOI Listing

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