Gametogenesis plays an important role in the reproduction and evolution of species.The transcriptomic and epigenetic alterations in this process can influence the reproductive capacity,fertilization,and embryonic deve...Gametogenesis plays an important role in the reproduction and evolution of species.The transcriptomic and epigenetic alterations in this process can influence the reproductive capacity,fertilization,and embryonic development.The rapidly increasing single-cell studies have provided valuable multi-omics resources.However,data from different layers and sequencing platforms have not been uniformed and integrated,which greatly limits their use for exploring the molecular mechanisms that underlie oogenesis and spermatogenesis.Here,we develop GametesOmics,a comprehensive database that integrates the data of gene expression,DNA methylation,and chromatin accessibility during oogenesis and spermatogenesis in humans and mice.GametesOmics provides a user-friendly website and various tools,including Search and Advanced Search for querying the expression and epigenetic modification(s)of each gene;Tools with Differentially expressed gene(DEG)analysis for identifying DEGs,Correlation analysis for demonstrating the genetic and epigenetic changes,Visualization for displaying single-cell clusters and screening marker genes as well as master transcription factors(TFs),and MethylView for studying the genomic distribution of epigenetic modifications.GametesOmics also provides Genome Browser and Ortholog for tracking and comparing gene expression,DNA methylation,and chromatin accessibility between humans and mice.GametesOmics offers a comprehensive resource for biologists and clinicians to decipher the cell fate transition in germ cell development,and can be accessed at http://gametesomics.cn/.展开更多
Being infected by SARS-CoV-2 may cause damage to multiple organs in patients, such as the lung, liver and heart. Angiotensin-converting enzyme 2(ACE2), reported as a SARS-CoV-2 receptor, is also expressed in human mal...Being infected by SARS-CoV-2 may cause damage to multiple organs in patients, such as the lung, liver and heart. Angiotensin-converting enzyme 2(ACE2), reported as a SARS-CoV-2 receptor, is also expressed in human male testes. This suggests a potential risk in human male reproductive system. However, the characteristics of ACE2-positive cells and the expression of other SARS-CoV-2 process-related genes are still worthy of further investigation. Here, we performed singlecell RNA seq(scRNA-seq) analysis on 853 male embryo primordial germ cells(PGCs) and 2,854 normal testis cells to assess the effects of the SARS-CoV-2 virus on the male reproductive system from embryonic stage to adulthood. We also collected and constructed the scRNA-seq library on 228 Sertoli cells from three non-obstructive azoospermia(NOA) patients to assess the effects at disease state. We found that ACE2 expressing cells existed in almost all testis cell types and Sertoli cells had highest expression level and positive cells ratio. Moreover, ACE2 was also expressed in human male PGCs. In adulthood, the level of ACE2 expression decreased with the increase of age. We also found that ACE2 positive cells had high expressions of stress response and immune activation-related genes. Interestingly, some potential SARS-CoV-2 process-related genes such as TMPRSS2, BSG, CTSL and CTSB had different expression patterns in the same cell type. Furthermore, ACE2 expression level in NOA donors’ Sertoli cells was significantly decreased. Our work would help to assess the risk of SARS-CoV-2 infection in the male reproductive system.展开更多
The worldwide infection of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)impacts human health and life on multiple levels.People infected with SARS-CoV-2 suffer from physical disorders and psychological d...The worldwide infection of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)impacts human health and life on multiple levels.People infected with SARS-CoV-2 suffer from physical disorders and psychological distress.At present,no direct evidence indicates that SARS-CoV-2 negatively influences human reproduction,and the possibility that gametes and embryos are affected requires further investigation.To evaluate the potential effects of SARS-CoV-2 infection on human reproduction and fetal health,this review summarizes the basic and clinical research of SARS-CoV-2 on reproduction up to date,hoping to offer guidance and advice to people at reproductive age and provide dues for the prevention and treatment of associated diseases.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.82125013 and 82101741)the National Key R&D Program of China(Grant No.2019YFA0801400)+1 种基金the Beijing Natural Science Foundation,China(Grant No.7232203)The authors thank Professor Fan Guo for providing detailed information about their previous study and Doctors Tong Chen and Pu Xue(EHBIO Gene Technology)for their technical assistance.
文摘Gametogenesis plays an important role in the reproduction and evolution of species.The transcriptomic and epigenetic alterations in this process can influence the reproductive capacity,fertilization,and embryonic development.The rapidly increasing single-cell studies have provided valuable multi-omics resources.However,data from different layers and sequencing platforms have not been uniformed and integrated,which greatly limits their use for exploring the molecular mechanisms that underlie oogenesis and spermatogenesis.Here,we develop GametesOmics,a comprehensive database that integrates the data of gene expression,DNA methylation,and chromatin accessibility during oogenesis and spermatogenesis in humans and mice.GametesOmics provides a user-friendly website and various tools,including Search and Advanced Search for querying the expression and epigenetic modification(s)of each gene;Tools with Differentially expressed gene(DEG)analysis for identifying DEGs,Correlation analysis for demonstrating the genetic and epigenetic changes,Visualization for displaying single-cell clusters and screening marker genes as well as master transcription factors(TFs),and MethylView for studying the genomic distribution of epigenetic modifications.GametesOmics also provides Genome Browser and Ortholog for tracking and comparing gene expression,DNA methylation,and chromatin accessibility between humans and mice.GametesOmics offers a comprehensive resource for biologists and clinicians to decipher the cell fate transition in germ cell development,and can be accessed at http://gametesomics.cn/.
基金funded by Beijing Municipal Science & Technology Commission (Z191100006619075)the National Natural Science Foundation of China (81521002 and 81730038)。
文摘Being infected by SARS-CoV-2 may cause damage to multiple organs in patients, such as the lung, liver and heart. Angiotensin-converting enzyme 2(ACE2), reported as a SARS-CoV-2 receptor, is also expressed in human male testes. This suggests a potential risk in human male reproductive system. However, the characteristics of ACE2-positive cells and the expression of other SARS-CoV-2 process-related genes are still worthy of further investigation. Here, we performed singlecell RNA seq(scRNA-seq) analysis on 853 male embryo primordial germ cells(PGCs) and 2,854 normal testis cells to assess the effects of the SARS-CoV-2 virus on the male reproductive system from embryonic stage to adulthood. We also collected and constructed the scRNA-seq library on 228 Sertoli cells from three non-obstructive azoospermia(NOA) patients to assess the effects at disease state. We found that ACE2 expressing cells existed in almost all testis cell types and Sertoli cells had highest expression level and positive cells ratio. Moreover, ACE2 was also expressed in human male PGCs. In adulthood, the level of ACE2 expression decreased with the increase of age. We also found that ACE2 positive cells had high expressions of stress response and immune activation-related genes. Interestingly, some potential SARS-CoV-2 process-related genes such as TMPRSS2, BSG, CTSL and CTSB had different expression patterns in the same cell type. Furthermore, ACE2 expression level in NOA donors’ Sertoli cells was significantly decreased. Our work would help to assess the risk of SARS-CoV-2 infection in the male reproductive system.
基金the National Key Research and Development Program(2019YFA0801400)the National Natural Science Foundation of China(81730038).
文摘The worldwide infection of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)impacts human health and life on multiple levels.People infected with SARS-CoV-2 suffer from physical disorders and psychological distress.At present,no direct evidence indicates that SARS-CoV-2 negatively influences human reproduction,and the possibility that gametes and embryos are affected requires further investigation.To evaluate the potential effects of SARS-CoV-2 infection on human reproduction and fetal health,this review summarizes the basic and clinical research of SARS-CoV-2 on reproduction up to date,hoping to offer guidance and advice to people at reproductive age and provide dues for the prevention and treatment of associated diseases.
