Project description:Hezuo pigs are known in China for early sexual maturity. In this study, we obtained small RNA-Seq data from testicular tissues of 30-day-old and 120-day-old Hezuo and Landrace pigs. Through comparative analysis of their differences, we searched for some miRNAs related to the regulation of precocious sexual traits in male cooperating pigs and revealed their molecular regulatory mechanisms, which can then provide references for the diagnosis and treatment of precocious sexual diseases in humans and for accelerating the breeding of high-fertility animals.
Project description:Establishment and maintenance of spermatogenesis need a complex process and vast regulatory network. There is growing evidence reveals that long noncoding RNAs (lncRNA) plays important role in regulating testicular development and spermatogenesis in a stage-specific way. We here report the identification of lncRNA LOC108635509 as key lncRNA regulator in black goat spermatogenesis. In the current study, we screened the transcriptomes (lncRNA and mRNA) of testicular from Guangxi black goats before puberty (3 days old, D3; 30 days old, D30), puberty (90 days old, D90) and postpuberty (180 days old, D180), and found there were 1211, 12180, 834 differential lncRNAs and 1196, 8838,269 differential mRNAs at the ages of D30 vs D3, D90 vs D30, and D180 vs D90. The expression pattern of differentially expressed (DE) lncRNAs indicated that D90 was a key node of lncRNAs participated in the regulation of testicular development and spermatogenesis in black goat. The of GO and KEGG analyses identified that DE lncRNAs and their target genes regulated spermatogenesis through MAPK, Ras, and PI3K-Akt signal pathways. Using cis- and trans-acting, 39 DE lncRNA-targeted genes were found to be enriched for male reproduction. Of these, LOC108635509, which specific expressed in testis and upregulated the expression levels at D90, was found participated in the regulation of testicular development through promoting the proliferation of SCs. Overall, this study provides new insight into the regulatory mechanisms that support spermatogenesis and testicular development in black goats.
Project description:Postnatal human male gonad development and function are known to involve many genes and pathways but our understanding of genome-wide developmental stage-specific and cell type-specific gene expression is far from complete. Integration of testicular and somatic data could elucidate regulatory mechanisms specifically controlling spermatogenesis and may yield insight into certain reproductive pathologies. Please note: AdMinus means that there is no Ad spermatogonia in the corresponding testicular biopsies of cryptorchid children. AdPlus means that Ad spermatogonia are present in the corresponding testicular biopsies of cryptorchid children. JS refers to Johnsen score.
Project description:Hezuo pigs are known in China for early sexual maturity. In this study, we obtained transcriptome data from testicular tissues of 30-day-old and 120-day-old Hezuo and Landrace pigs. Through comparative analysis of their differences, we searched for some genes related to the regulation of precocious sexual traits in male cooperating pigs and revealed their molecular regulatory mechanisms, which can then provide references for the diagnosis and treatment of precocious sexual diseases in humans and for accelerating the breeding of high-fertility animals.
Project description:Pro-spermatogonia (SG) serve as the gateway to spermatogenesis. Using single-cell RNA sequencing (RNAseq), we studied the development of ProSG, their SG descendants, and testicular somatic cells, during the perinatal period in mice. We identified both gene and protein markers for 3 temporally distinct ProSG cell subsets, including a migratory cell population with a distinct transcriptome from the previously defined T1- and T2-ProSG stages. This intermediate (I)-ProSG subset translocates from the center of seminiferous tubules to the spermatogonial stem cell (SSC) “niche” in its periphery soon after birth. We identified 3 undifferentiated SG subsets at postnatal day 7, each of which express distinct genes, including transcription factor and signaling genes. Two of these subsets have the characteristics of newly emergent SSCs. We also molecularly defined the development of Sertoli, Leydig, and peritubular myoid cells during the perinatal period, allowing us to identify candidate signaling pathways acting between somatic and germ cells in a stage-specific manner during the perinatal period. Our study provides a rich resource for those investigating testicular germ and somatic cell developmental during the perinatal period.
Project description:Smooth-muscle-like peritubular cells make up the wall of semniferous tubules of men. These human testicular peritubular cells (HTPC) have been shown to fulfill different roles. They transport sperm, secrete various factors like GDNF (glial cell line derived neurotrophic factor) and are immunologically active. They might contribute to spermatogonial stem cell niche altering and testicular ageing. Previous studies were limited regarding heterogeneity (due to lifestyle, age, medical history etc.) and accessibility of HTPCs. To circumvent this problem a cellular primate model should be established. The proteome of 6 MKTPCs of individual healthy and young (2 or 3 years) donors was assessed to investigate the suitability as a model.
Project description:This study used yak and cattle-yak testes from different developmental stages as materials to construct a complete translation map of the testes, and integrated transcriptome and translation results to explore gene expression changes during the sexual maturation process of yak testes. This study utilized Ribo seq technology to construct a transcriptome map of yak testicular development, revealing that the expression of genes related to spermatogenesis is specifically translated and regulated at different developmental stages. In addition, many unknown open reading frames (ORFs) in the testes have been newly identified.