Project description:The sequence of gene regulatory events that drive neonatal germ cell development in the mammalian testis is not yet clear. We assessed changes in mRNA utilization in the neonatal testis at 1 and 4 dpp, times when the testis contains quiescent gonocytes (1 dpp) and proliferating spermatogonia (4 dpp). There are not thought to be major changes in the nature or number of somatic cells over that interval. We used microarrays to detail the global expression levels of mRNA distribution between non-translating mRNAs and efficiently translating mRNAs during testis development at 1 dpp and 4 dpp
Project description:The sequence of gene regulatory events that drive neonatal germ cell development in the mammalian testis is not yet clear. We assessed changes in mRNA utilization in the neonatal testis at 1 and 4 dpp, times when the testis contains quiescent gonocytes (1 dpp) and proliferating spermatogonia (4 dpp). There are not thought to be major changes in the nature or number of somatic cells over that interval. We used microarrays to detail the global expression levels of mRNA distribution between non-translating mRNAs and efficiently translating mRNAs during testis development at 1 dpp and 4 dpp Extracts of mouse testes from 1 dpp and 4 dpp CD-1 mice were fractionated over a sucrose gradient in triplicate. Gradients were fractionated using an ISCO gradient fractionation system equipped with a UA-6 detector. The position of the 80S peak defined the boundary between translating and non-translating mRNAs. Pooled non-polysomal (non-translating; fractions 1-3) and heavy polysomal (efficiently translating, fractions 7-13) RNAs were isolated from sucrose gradient fractions for hybridization on Affymetrix 420 2.0 microarrays.
Project description:Todate, the investigation into the molecular mechanisms of testis development and spermatogenesis has largely focused on the role of protein-coding genes and small noncoding RNA including microRNAs and piRNAs. In recent years, long noncoding RNAs (lncRNAs) have been shown to play critical regulatory roles in mammalian development. To understand the role of lncRNAs in development of the mammalian testis and spermatogenesis, we firstly utilized commercial microarray to systematically investigate lncRNAs expression profiles of neonatal (6-day-old) and adult (8-week-old) mouse testis. By comparison the lncRNAs expression profiles of two developmental stage of testes, we obtained the differentially expressed lncRNAs and examined their genomic context, promoter characteristics, neighbored protein-coding genes, provide an important foundation for future research on molecular mechanisms of lncRNAs in mammalian testis development and spermatogenesis.
Project description:This experiment compared the expression of mRNAs and noncoding RNAs during the development of mouse testis. The primary aim of the experiment was to identify ncRNAs that were differentially expressed during this process.
Project description:We collected whole genome testis expression data from hybrid zone mice. We integrated GWAS mapping of testis expression traits and low testis weight to gain insight into the genetic basis of hybrid male sterility.
Project description:Reproductive capacity can be altered by challenges experienced during critical periods of development, including fetal development and early neonatal life. Gossypol is a polyphenolic compound, commonly found in seeds of cotton plants, that impairs male reproduction. In this study, we investigated whether the exposure to gossypol in utero and during lactation alters testis development and testis gene expression in sheep.
Project description:We performed systematic analysis of site-specific O-glycosylation in mouse testis at different developmental stages, and investigated its alternation during spermatogenesis.
