Disrupting genes in the rat on a genome-wide scale will allow the investigation of many biological processes linked to human health. Here we used transposon-mediated mutagenesis to knock out genes in rat spermatogonial stem cells. Given the capacity of the testis to support spermatogenesis from thousands of transplanted, genetically manipulated spermatogonia, this approach paves a way for high-throughput functional genomic studies in the laboratory rat.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2886193 | PMC |
http://dx.doi.org/10.1038/nmeth.1461 | DOI Listing |
Domest Anim Endocrinol
January 2025
BIOFITER-IUCA, Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet 177, 50013 Zaragoza, Spain. Electronic address:
This review presents recent findings on the effect of melatonin on ram spermatozoa. This hormone regulates seasonal reproduction in the ovine species through the hypothalamic-pituitary-gonadal axis, but it also exerts direct effects on spermatogenesis, seminal quality and fertility. In the testis, melatonin stimulates blood flow to this organ, but it also appears to be involved in the differentiation of spermatogonial stem cells and the secretion of testosterone through the MT1 and MT2 receptors.
View Article and Find Full Text PDFBiol Trace Elem Res
January 2025
Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brasil.
Arsenic in drinking water has been associated with an increased risk of health concerns. This metalloid is ingested and distributed throughout the body, accumulating in several organs, including the testis. In this organ, arsenic disturbs steroidogenesis and spermatogenesis and affects male fertility.
View Article and Find Full Text PDFAsian J Androl
January 2025
Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, The Key Laboratory of Model Animals and Stem cell Biology in Hunan Province, The Engineering Research Center of Reproduction and Translational Medicine of Hunan Province, Hunan Normal University School of Medicine, Changsha 410013, China.
Icariin is a pure compound derived from Epimedium brevicornu Maxim, and it helps the regulation of male reproduction. Nevertheless, the role and underlying mechanisms of Icariin in mediating male germ cell development remain to be clarified. Here, we have demonstrated that Icariin promoted proliferation and DNA synthesis of mouse spermatogonial stem cells (SSCs).
View Article and Find Full Text PDFElife
January 2025
Biology of the Testis (BITE) Laboratory, Genetics, Reproduction and Development (GRAD) Research Group, Vrije Universiteit Brussel, Brussels, Belgium.
Although the impact of gender-affirming hormone therapy (GAHT) on spermatogenesis in trans women has already been studied, data on its precise effects on the testicular environment is poor. Therefore, this study aimed to characterize, through histological and transcriptomic analysis, the spermatogonial stem cell niche of 106 trans women who underwent standardized GAHT, comprising estrogens and cyproterone acetate. A partial dedifferentiation of Sertoli cells was observed, marked by the co-expression of androgen receptor and anti-Müllerian hormone which mirrors the situation in peripubertal boys.
View Article and Find Full Text PDFGenes (Basel)
November 2024
Jiangsu Province Key Laboratory of Animal Breeding and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China.
Background: Histone deacetylase 4 () is a member of the class II histone deacetylase family, whose members play a crucial role in various biological processes. An in-depth investigation of the transcriptional characteristics of chicken can provide fundamental insights into its function.
Methods: We examined expression in chicken embryonic stem cells (ESC) and spermatogonial stem cells (SSC) and cloned a 444 bp fragment from upstream of the chicken transcription start site.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!