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Wang H, Jia Z, Mao A, Xu B, Wang S, Wang L, Liu S, Zhang H, Zhang X, Yu T, Mu T, Xu M, Cram DS, Yao Y. Analysis of balanced reciprocal translocations in patients with subfertility using single-molecule optical mapping. J Assist Reprod Genet 2020; 37:509-516. [PMID: 32026199 DOI: 10.1007/s10815-020-01702-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 01/27/2020] [Indexed: 12/26/2022] Open
Abstract
PURPOSE Approximately 1% of individuals who carry a balanced reciprocal translocation (BRT) are subfertile. Current karyotyping does not have the resolution to determine whether the breakpoints of the involved chromosomes perturb genes important for fertility. The aim of this study was to apply single-molecule optical mapping (SMOM) to patients presenting for IVF (in vitro fertilization) to ascertain whether the BRT disrupted any genes associated with normal fertility. METHODS Nine subfertile patients with different BRTs were recruited for the study. Methyltransferase enzyme DLE1 was used to fluorescently label their genomic DNA samples at the recognition motif CTTAAG. The SMOM was performed on the Bionano platform, and long molecules aligned against the reference genome hg19 to identify the breakpoint regions. Mate-pair and PCR-Sanger sequencing were used to confirm the precise breakpoint sequences. RESULTS Both breakpoint regions in each of the nine BRTs were finely mapped to small regions of approximately 10 Kb, and their positions were consistent with original cytogenetic banding patterns determined by karyotyping. In three BRTs, breakpoints disrupted genes known to be associated with male infertility, namely NUP155 and FNDC3A [46,XY,t(5;13)(p15;q22)], DPY19L1 [46,XY,t(1;7)(p36.3;p15), and BAI3 [46,XY,t(3;6)(p21;q16)]. CONCLUSIONS The SMOM has potential clinical application as a rapid tool to screen patients with BRTs for underlying genetic causes of infertility and other diseases.
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Affiliation(s)
- Hui Wang
- Department of Obstetrics and Gynecology, PLA General Hospital, Beijing, 100853, China
| | - Zhengjun Jia
- Prenatal Diagnosis Center of Hunan Province, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, 410008, China
| | - Aiping Mao
- Berry Genomics Corporation, Beijing, 102200, China
| | - Bing Xu
- Department of Obstetrics and Gynecology, PLA General Hospital, Beijing, 100853, China
| | - Shuling Wang
- Department of Obstetrics and Gynecology, PLA General Hospital, Beijing, 100853, China
| | - Li Wang
- The First Hospital of KunMing, Kunming, 650034, China
| | - Sai Liu
- Department of Obstetrics and Gynecology, PLA General Hospital, Beijing, 100853, China.,The First Hospital of KunMing, Kunming, 650034, China
| | - Haiman Zhang
- Berry Genomics Corporation, Beijing, 102200, China
| | | | - Tao Yu
- Berry Genomics Corporation, Beijing, 102200, China
| | - Ting Mu
- Berry Genomics Corporation, Beijing, 102200, China
| | - Mengnan Xu
- Berry Genomics Corporation, Beijing, 102200, China
| | - David S Cram
- Berry Genomics Corporation, Beijing, 102200, China.
| | - Yuanqing Yao
- Department of Obstetrics and Gynecology, PLA General Hospital, Beijing, 100853, China.
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Yu H, Diao H, Wang C, Lin Y, Yu F, Lu H, Xu W, Li Z, Shi H, Zhao S, Zhou Y, Zhang Y. Acetylproteomic analysis reveals functional implications of lysine acetylation in human spermatozoa (sperm). Mol Cell Proteomics 2015; 14:1009-23. [PMID: 25680958 DOI: 10.1074/mcp.m114.041384] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Indexed: 11/06/2022] Open
Abstract
Male infertility is a medical condition that has been on the rise globally. Lysine acetylation of human sperm, an essential posttranslational modification involved in the etiology of sperm abnormality, is not fully understood. Therefore, we first generated a qualified pan-anti-acetyllysine monoclonal antibody to characterize the global lysine acetylation of uncapacitated normal human sperm with a proteomics approach. With high enrichment ratios that were up to 31%, 973 lysine-acetylated sites that matched to 456 human sperm proteins, including 671 novel lysine acetylation sites and 205 novel lysine-acetylated proteins, were identified. These proteins exhibited conserved motifs XXXKYXXX, XXXKFXXX, and XXXKHXXX, were annotated to function in multiple metabolic processes, and were localized predominantly in the mitochondrion and cytoplasmic fractions. Between the uncapacitated and capacitated sperm, different acetylation profiles in regard to functional proteins involved in sperm capacitation, sperm-egg recognition, sperm-egg plasma fusion, and fertilization were observed, indicating that acetylation of functional proteins may be required during sperm capacitation. Bioinformatics analysis revealed association of acetylated proteins with diseases and drugs. Novel acetylation of voltage-dependent anion channel proteins was also found. With clinical sperm samples, we observed differed lysine acetyltransferases and lysine deacetylases expression between normal sperm and abnormal sperm of asthenospermia or necrospermia. Furthermore, with sperm samples impaired by epigallocatechin gallate to mimic asthenospermia, we observed that inhibition of sperm motility was partly through the blockade of voltage-dependent anion channel 2 Lys-74 acetylation combined with reduced ATP levels and mitochondrial membrane potential. Taken together, we obtained a qualified pan-anti-acetyllysine monoclonal antibody, analyzed the acetylproteome of uncapacitated human sperm, and revealed associations between functional protein acetylation and sperm functions.
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Affiliation(s)
- Heguo Yu
- From the NPFPC Key Laboratory of Contraceptives and Devices, Shanghai Institute of Planned Parenthood Research, Institutes of Reproduction and Development
| | - Hua Diao
- From the NPFPC Key Laboratory of Contraceptives and Devices, Shanghai Institute of Planned Parenthood Research, Institutes of Reproduction and Development
| | - Chunmei Wang
- Shanghai Key Laboratory for Molecular Andrology, State Key Laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Yan Lin
- School of Life Sciences, and Molecular and Cell Biology Lab, Fudan University, Shanghai 200032, China
| | - Fudong Yu
- Department of General Surgery, Shanghai First People's Hospital, Medical College, Shanghai Jiaotong University, Shanghai 200080, China, and
| | - Hui Lu
- Department of Urology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200001, China
| | - Wei Xu
- School of Life Sciences, and Molecular and Cell Biology Lab, Fudan University, Shanghai 200032, China
| | - Zheng Li
- Department of Urology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200001, China
| | - Huijuan Shi
- From the NPFPC Key Laboratory of Contraceptives and Devices, Shanghai Institute of Planned Parenthood Research, Institutes of Reproduction and Development
| | - Shimin Zhao
- School of Life Sciences, and Molecular and Cell Biology Lab, Fudan University, Shanghai 200032, China,
| | - Yuchuan Zhou
- Shanghai Key Laboratory for Molecular Andrology, State Key Laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China,
| | - Yonglian Zhang
- From the NPFPC Key Laboratory of Contraceptives and Devices, Shanghai Institute of Planned Parenthood Research, Institutes of Reproduction and Development, Shanghai Key Laboratory for Molecular Andrology, State Key Laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China,
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Cheng W, Ip YT, Xu Z. Gudu, an Armadillo repeat-containing protein, is required for spermatogenesis in Drosophila. Gene 2013; 531:294-300. [PMID: 24055424 DOI: 10.1016/j.gene.2013.08.080] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Revised: 08/20/2013] [Accepted: 08/26/2013] [Indexed: 01/08/2023]
Abstract
The Drosophila annotated gene CG5155 encodes a protein that contains 10 Armadillo-repeats and has an unknown function. To fill this gap, we performed loss-of-function studies using RNAi. By analysis of four independent Drosophila RNAi lines targeting two non-overlapping regions of the CG5155 transcript, we demonstrate that this gene is required for male fertility. Therefore, we have named this gene Gudu. The transcript of Gudu is highly enriched in adult testes. Knockdown of Gudu by a ubiquitous driver leads to defects in the formation of the individualization complex that is required for spermatid maturation, thereby impairing spermatogenesis. Furthermore, testis-specific knockdown of Gudu by crossing the RNAi lines with the bam-Gal4 driver is sufficient to cause the infertility and defective spermatogenesis. Since Gudu is highly homologous to vertebrate ARMC4, also an Armadillo-repeat-containing protein enriched in testes, our results suggest that Gudu and ARMC4 are a subfamily of Armadillo-repeat containing proteins that may have an evolutionarily conserved function in spermatogenesis.
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Affiliation(s)
- Wei Cheng
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Y Tony Ip
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Zuoshang Xu
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA
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Aitken RJ. Whither must spermatozoa wander? The future of laboratory seminology. Asian J Androl 2010; 12:99-103. [PMID: 20111089 DOI: 10.1038/aja.2008.42] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
This commentary celebrates the publication of the 5th edition of the World Health Organization Laboratory Manual for the Examination and Processing of Human Semen. This is the most complete text to date on the creation of a conventional semen profile and includes invaluable reference limits for specific aspects of semen quality based on the analysis of over 1 900 recent fathers. The new edition of the manual also includes detailed protocols for monitoring different aspects of sperm function and new chapters on the preparation of spermatozoa for assisted conception and cryopreservation. Given that this publication is the definitive statement on how to perform a descriptive semen analysis, we might speculate on the future of this field and the sorts of tests that might feature in future editions of the manual. Cell biologists are currently being empowered by the 'omics revolution, which is placing at their disposal technologies of unprecedented power to examine the biochemical composition of cells such as spermatozoa. Indeed, spermatozoa are perfect vehicles for this kind of analysis because they can be obtained as extremely pure suspensions, exist naturally in isolation and can be induced to express their capacity for fertilization and the initiation of embryonic development in vitro. The application of 'omics technologies to these cells, in concert with detailed assessments of their functional competence, should provide insights into the biochemical basis of defective semen quality. This information will then help us understand the causes of male infertility and to develop rational methods for its treatment and possible prevention.
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Affiliation(s)
- R John Aitken
- ARC Centre of Excellence in Biotechnology and Development, University of Newcastle, Callaghan NSW, Australia
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