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Bollwein H, Malama E. Review: Evaluation of bull fertility. Functional and molecular approaches. Animal 2023; 17 Suppl 1:100795. [PMID: 37567681 DOI: 10.1016/j.animal.2023.100795] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/22/2023] [Accepted: 03/23/2023] [Indexed: 08/13/2023] Open
Abstract
With the term "assisted reproduction technologies" in modern cattle farming, one could imply the collection of techniques that aim at the optimal use of bovine gametes to produce animals of high genetic value in a time- and cost-efficient manner. The accurate characterisation of sperm quality plays a critical role for the efficiency of several assisted reproduction-related procedures, such as sperm processing, in vitro embryo production and artificial insemination. Bull fertility is ultimately a collective projection of the ability of a series of ejaculates to endure sperm processing stress, and achieve fertilisation of the oocyte and production of a viable and well-developing embryo. In this concept, the assessment of sperm functional and molecular characteristics is key to bull fertility diagnostics and prognostics. Among others, functional features linked to sperm plasma membrane, acrosome and DNA integrity are usually assessed as a measure of the ability of sperm to express the phenotypes that will allow them to maintain their homeostasis and orchestrate-in a strict temporal manner-the course of events that will enable the delivery of their genetic content to the oocyte upon fertilisation. Nevertheless, measures of sperm functionality are not always adequate indicators of bull fertility. Nowadays, advancements in the field of molecular biology have facilitated the profiling of several biomolecules in male gametes. The molecular profiling of bovine sperm offers a deeper insight into the mechanisms underlying sperm physiology and, thus, can reveal novel candidate markers for bull fertility prognosis. In this review, the importance of three organelles (the nucleus, the plasma membrane and the acrosome) for the characterisation of sperm fertilising capacity and bull fertility is discussed at functional and molecular levels. In particular, information about sperm head morphometry, chromatin structure, viability as well as the ability of sperm to capacitate and undergo the acrosome reaction are presented in relation to the cryotolerance of male gametes and bull fertility. Finally, major spermatozoal coding and non-coding RNAs, and proteins that are involved in the above-mentioned aspects of sperm functionality are also summarised.
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Affiliation(s)
- H Bollwein
- Clinic of Reproductive Medicine, Department for Farm Animals, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, 8057 Zurich, Switzerland.
| | - E Malama
- Clinic of Reproductive Medicine, Department for Farm Animals, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, 8057 Zurich, Switzerland
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Aisha J, Yenugu S. Characterization of SPINK2, SPACA7 and PDCL2: Effect of immunization on fecundity, sperm function and testicular transcriptome. Reprod Biol 2023; 23:100711. [PMID: 36462395 DOI: 10.1016/j.repbio.2022.100711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 11/08/2022] [Accepted: 11/12/2022] [Indexed: 12/05/2022]
Abstract
Testicular factors play a vital role in spermatogenesis. We characterized the functional role of rat Spink2, Spaca7 and Pdcl2 genes. Their primary, secondary and tertiary structure were deduced in silico. The genes of rat Spink2, Spaca7 and Pdcl2 mRNA were predominantly expressed in the testis. SPINK2, SPACA7 and PDCL2 protein expression was evident in all the cell types of testis and on spermatozoa. Ablation of each of these proteins by active immunization resulted in reduced fecundity and sperm count. Damage to the anatomical architecture of testis and epididymis was evident. In SPINK2 immunized rats, 283 genes were differentially regulated while it was 434 and 872 genes for SPACA7 and PDCL2 respectively. Genes that were differentially regulated in the testis of SPINK2 immunized rats primarily belonged to extracellular exosome formation, extracellular space and response to drugs. SPACA7 ablation affected genes related to extracellular space, oxidation-reduction processes, endoplasmic reticulum membrane and response to drugs. Differential gene expression was observed for nuclear function, protein binding and positive regulation of transcription from RNA polymerase II promoter in testis of PDCL2 immunized rats. Results of our study demonstrate the role of SPINK2, SPACA7 and PDCL2 in spermatogenesis and in important molecular processes that may dictate testicular function and other physiological responses as well.
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Affiliation(s)
- Jamil Aisha
- Department of Animal Biology, University of Hyderabad, Hyderabad 500046, India
| | - Suresh Yenugu
- Department of Animal Biology, University of Hyderabad, Hyderabad 500046, India.
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Cheung S, Xie P, Rosenwaks Z, Palermo GD. Profiling the male germline genome to unravel its reproductive potential. Fertil Steril 2023; 119:196-206. [PMID: 36379263 PMCID: PMC9898105 DOI: 10.1016/j.fertnstert.2022.11.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 10/28/2022] [Accepted: 11/07/2022] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To identify specific germline mutations related to sperm reproductive competence, in couples with unexplained infertility. DESIGN In this retrospective study, couples were divided according to whether they had successful intracytoplasmic sperm injection outcomes (fertile) or not (infertile). Ancillary sperm function tests were performed on ejaculates, and whole exome sequencing was performed on spermatozoal DNA. Sperm aneuploidy and gene mutation profiles were compared between the 2 cohorts as well as according to the specific reasons for reproductive failure. SETTING Center for reproductive medicine at a major academic medical center. PATIENT(S) Thirty-one couples with negative infertility workups and normal semen parameters. INTERVENTION(S) Couples with mutations on fertilization- or embryo development-related genes were subsequently treated by assisted gamete treatment or microfluidics, respectively. MAIN OUTCOME MEASURE(S) Intracytoplasmic sperm injection cycle outcomes including fertilization, clinical pregnancy, and delivery rates. RESULT(S) Sperm aneuploidy was lower in the fertile group (4.0% vs. 8.4%). Spermatozoa from both cohorts displayed mutations associated with sperm-egg fusion (ADAM3A) and acrosomal development (SPACA1), regardless of reproductive outcome. The infertile cohort was then categorized according to the reasons for reproductive failure: absent fertilization, poor early embryo development, implantation failure, or pregnancy loss. Spermatozoa from the fertilization failure subgroup (n = 4) had negligible PLCζ presence (10% ± 9%) and gene mutations (PLCZ1, PIWIL1, ADAM15) indicating a sperm-related oocyte-activating deficiency. These couples were successfully treated by assisted gamete treatment in their subsequent cycles. Spermatozoa from the poor early embryo development subgroup (n = 5) had abnormal centrosomes (45.9% ± 5%), and displayed mutations impacting centrosome integrity (HAUS1) and spindle/microtubular stabilization (KIF4A, XRN1). Microfluidic sperm processing subsequently yielded a term pregnancy. Spermatozoa from the implantation failure subgroup (n = 7) also had abnormal centrosomes (53.1% ± 13%) and carried mutations affecting embryonic implantation (IL9R) and microtubule and centrosomal integrity (MAP1S, SUPT5H, PLK4), whereas those from the pregnancy loss subgroup (n = 5) displayed mutations on genes involved in trophoblast development (NLRP7), cell cycle regulation (MARK4, TRIP13, DAB2IP, KIF1C), and recurrent miscarriage (TP53). CONCLUSION(S) By assessing the sperm genome, we identified specific germline mutations related to various reproductive processes. This information may clarify elusive factors underlying reproductive competence and enhance treatment for couples with unexplained infertility.
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Affiliation(s)
- Stephanie Cheung
- The Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine, Weill Cornell Medicine, New York, New York
| | - Philip Xie
- The Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine, Weill Cornell Medicine, New York, New York
| | - Zev Rosenwaks
- The Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine, Weill Cornell Medicine, New York, New York
| | - Gianpiero D Palermo
- The Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine, Weill Cornell Medicine, New York, New York.
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Liu C, Shen Y, Tang S, Wang J, Zhou Y, Tian S, Wu H, Cong J, He X, Jin L, Cao Y, Yang Y, Zhang F. Homozygous variants in AKAP3 induce asthenoteratozoospermia and male infertility. J Med Genet 2023; 60:137-143. [PMID: 35228300 DOI: 10.1136/jmedgenet-2021-108271] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Accepted: 02/08/2022] [Indexed: 01/27/2023]
Abstract
BACKGROUND As a common type of asthenoteratozoospermia, multiple morphological abnormalities of the sperm flagella (MMAF) can cause male infertility. Previous studies have revealed genetic factors as a major cause of MMAF. The known MMAF-associated genes are involved in the mitochondrial sheath, outer dense fibre or axoneme of the sperm flagella. These findings indicate the genetic heterogeneity of MMAF. METHODS AND RESULTS Here, we conducted genetic analyses using whole-exome sequencing in a cohort of 150 Han Chinese men with asthenoteratozoospermia. Homozygous deleterious variants of AKAP3 (A-kinase anchoring protein 3) were identified in two MMAF-affected men from unrelated families. One AKAP3 variant was a frameshift (c.2286_2287del, p.His762Glnfs*22) and the other variant was a missense mutation (c.44G>A, p.Cys15Tyr), which was predicted to be damaging by multiple bioinformatics tools. Further western blotting and immunofluorescence assays revealed the absence of AKAP3 in the spermatozoa from the man harbouring the homozygous frameshift variant, whereas the expression of AKAP3 was markedly reduced in the spermatozoa of the man with the AKAP3 missense variant p.Cys15Tyr. Notably, the clinical outcomes after intracytoplasmic sperm injection (ICSI) were divergent between these two cases, suggesting a possibility of AKAP3 dosage-dependent prognosis of ICSI treatment. CONCLUSIONS Our study revealed AKAP3 as a novel gene involved in human asthenoteratozoospermia.
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Affiliation(s)
- Chunyu Liu
- Obstetrics and Gynecology Hospital, State Key Laboratory of Genetic Engineering, Human Phenome Institute, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Institute of Reproduction and Development, Fudan University, Shanghai, China
| | - Ying Shen
- Department of Obstetrics/Gynecology, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Shuyan Tang
- Obstetrics and Gynecology Hospital, State Key Laboratory of Genetic Engineering, Human Phenome Institute, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Institute of Reproduction and Development, Fudan University, Shanghai, China
| | - Jiaxiong Wang
- Center for Reproduction and Genetics, State Key Laboratory of Reproductive Medicine, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou, Jiangsu, China
| | - Yiling Zhou
- Obstetrics and Gynecology Hospital, State Key Laboratory of Genetic Engineering, Human Phenome Institute, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Institute of Reproduction and Development, Fudan University, Shanghai, China
| | - Shixiong Tian
- Obstetrics and Gynecology Hospital, State Key Laboratory of Genetic Engineering, Human Phenome Institute, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Institute of Reproduction and Development, Fudan University, Shanghai, China
| | - Huan Wu
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Population Health Across Life Cycle, Ministry of Education of the People's Republic of China, Anhui Medical University, Hefei, Anhui, China
| | - Jiangshan Cong
- Obstetrics and Gynecology Hospital, State Key Laboratory of Genetic Engineering, Human Phenome Institute, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Institute of Reproduction and Development, Fudan University, Shanghai, China
| | - Xiaojin He
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Population Health Across Life Cycle, Ministry of Education of the People's Republic of China, Anhui Medical University, Hefei, Anhui, China
| | - Li Jin
- Obstetrics and Gynecology Hospital, State Key Laboratory of Genetic Engineering, Human Phenome Institute, Fudan University, Shanghai, China
| | - Yunxia Cao
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Population Health Across Life Cycle, Ministry of Education of the People's Republic of China, Anhui Medical University, Hefei, Anhui, China
| | - Yihong Yang
- Center of Reproductive Medicine, West China Second University Hospital, Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects, Ministry of Education, Sichuan University, Chengdu, Sichuan, China
| | - Feng Zhang
- Obstetrics and Gynecology Hospital, State Key Laboratory of Genetic Engineering, Human Phenome Institute, Fudan University, Shanghai, China .,Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Institute of Reproduction and Development, Fudan University, Shanghai, China
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Insights into the Mechanism of Bovine Spermiogenesis Based on Comparative Transcriptomic Studies. Animals (Basel) 2021; 11:ani11010080. [PMID: 33466297 PMCID: PMC7824766 DOI: 10.3390/ani11010080] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 11/26/2020] [Accepted: 12/30/2020] [Indexed: 12/14/2022] Open
Abstract
Simple Summary Any irregularity in spermiogenesis reduces the quality of semen and may lead to male sterility in cattle and humans. Thus, we investigated the differential transcriptomics of spermatids from round spermatid to epididymal sperm and compared them with the transcriptomics of mice in the same period. We found differentially expressed genes (DEGs) involved in sperm head and tail formation, and epigenetic regulatory networks which regulated genetic material condensation, the deformation of the spermatid, and the expression of genes in it. According to the sterility report on the ART3 protein and its possible epigenetic function, we detected that it was localised outside the spermatocyte, in round and elongated spermatids. Interestingly, we observed that the ART3 protein on round and elongated spermatids was localised approximately to the lumen of seminiferous tubule. It was also localised on the head and tail part near the head in epididymal sperm, suggesting its important role in the deformation from round spermatids to sperm. Our findings provide new insights into the molecular mechanism underlying bovine spermiogenesis, thereby contributing to the improved reproductive potential of cattle and the development of strategies for the diagnosis and treatment of male infertility. Abstract To reduce subfertility caused by low semen quality and provide theoretical guidance for the eradication of human male infertility, we sequenced the bovine transcriptomes of round, elongated spermatids and epididymal sperms. The differential analysis was carried out with the reference of the mouse transcriptome, and the homology trends of gene expression to the mouse were also analysed. First, to explore the physiological mechanism of spermiogenesis that profoundly affects semen quality, homological trends of differential genes were compared during spermiogenesis in dairy cattle and mice. Next, Gene Ontology (GO), Kyoto Encyclopaedia of Genes and Genomes (KEGG) pathway enrichment, protein–protein interaction network (PPI network), and bioinformatics analyses were performed to uncover the regulation network of acrosome formation during the transition from round to elongated spermatids. In addition, processes that regulate gene expression during spermiogenesis from elongated spermatid to epididymal sperm, such as ubiquitination, acetylation, deacetylation, and glycosylation, and the functional ART3 gene may play important roles during spermiogenesis. Therefore, its localisation in the seminiferous tubules and epididymal sperm were investigated using immunofluorescent analysis, and its structure and function were also predicted. Our findings provide a deeper understanding of the process of spermiogenesis, which involves acrosome formation, histone replacement, and the fine regulation of gene expression.
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Zhang T, Wang J, Niu W, Wang F, Liu J, Xing Y, Jia P, Ren X, Wang J, Zang W, Chen X. Bioinformatic prediction of the structure and characteristics of human sperm acrosome membrane-associated protein 1 (hSAMP32) and evaluation of its antifertility function in vivo. Reprod Fertil Dev 2020; 32:1282-1292. [PMID: 33220718 DOI: 10.1071/rd20198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 10/08/2020] [Indexed: 11/23/2022] Open
Abstract
Human sperm acrosome membrane-associated protein 1 (hSAMP32) plays an important role in the acrosome reaction, sperm-egg primary binding, secondary binding and fusion processes. However, its spatial structural and invivo antifertility function remain unknown. In this study, we first analysed the physical and chemical characteristics and antigenic epitopes of immunised mice using bioinformatics. Then, we constructed the prokaryotic expression vector pcDNA3.1-hSAMP32 to immunise BALB/c mice invivo. IgG antibodies in the serum were detected, and the litter size of female mice and the number of the hamster eggs penetrated were counted. hSAMP32 was found to contain six hydrophilic regions and a signal peptide beginning at amino acid position 29. The transmembrane region of hSAMP32 was located within amino acids 217-239 with α-helices and random coil structures. We predicted five antigenic epitopes. The molecular weight of hSAMP32 was 59 kDa. Moreover, the results of invivo studies revealed that 56 days after the first immunisation, the litter size was significantly smaller for female pcDNA-3.1(+)-hSAMP32-immunised (mean±s.d. 4.33±1.21) than control mice (9.50±0.55), indicating that the immunocontraception vaccine had an antifertility effect. This experiment presents a theoretical and experimental basis for in-depth study of the hSAMP32 mechanism within the sperm-egg fusing process and for the screening of antigenic epitopes with immunocontraceptive properties.
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Affiliation(s)
- Tianwu Zhang
- School of Computer Science, Henan University of Engineering, Xinzheng, Henan Province, 451191, China
| | - Junmin Wang
- Department of Human Anatomy, Basic Medical College of Zhengzhou University, Zhengzhou, Henan Province, 450001, China
| | - Wenbin Niu
- Reproductive Medical Center of the First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan Province, 450052, China
| | - Fang Wang
- Reproductive Medical Center of the First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan Province, 450052, China
| | - Jin Liu
- Department of Human Anatomy, Basic Medical College of Zhengzhou University, Zhengzhou, Henan Province, 450001, China
| | - Yinpei Xing
- Department of Human Anatomy, Basic Medical College of Zhengzhou University, Zhengzhou, Henan Province, 450001, China
| | - Peijun Jia
- Department of Human Anatomy, Basic Medical College of Zhengzhou University, Zhengzhou, Henan Province, 450001, China
| | - Xiuhua Ren
- Department of Human Anatomy, Basic Medical College of Zhengzhou University, Zhengzhou, Henan Province, 450001, China
| | - Jiarui Wang
- School of Public Health, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Weidong Zang
- Department of Human Anatomy, Basic Medical College of Zhengzhou University, Zhengzhou, Henan Province, 450001, China
| | - Xuemei Chen
- Department of Human Anatomy, Basic Medical College of Zhengzhou University, Zhengzhou, Henan Province, 450001, China; and Corresponding author.
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Sperm IZUMO1-Dependent Gamete Fusion Influences Male Fertility in Mice. Int J Mol Sci 2019; 20:ijms20194809. [PMID: 31569716 PMCID: PMC6801368 DOI: 10.3390/ijms20194809] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 09/26/2019] [Accepted: 09/27/2019] [Indexed: 12/19/2022] Open
Abstract
Sperm–egg fusion is accomplished through the interaction of a specific set of membrane proteins in each gamete: sperm IZUMO1 and oocyte JUNO. Recently, we found that alternative splicing of the Izumo1 gene generates a novel IZUMO1 isoform (IZUMO1_v2). Here, we obtained four mouse lines, having graded different levels of IZUMO1 protein by combining an original IZUMO1 (IZUMO1_v1) knockout with IZUMO1-null (both IZUMO1_v1 and _v2 disrupted) genetic background, in order to determine how the quantity of IZUMO1 influences male fertility. Subsequently, we clarified that the signal intensity from two quantitative assays, western blot and immunostaining analyses with a monoclonal antibody against mouse IZUMO1, were strongly correlated with average litter size. These results suggest that evaluating IZUMO1 protein levels is useful for predicting fecundity, and is a suitable test for male fertility.
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Huang Y, Ha S, Li Z, Li J, Xiao W. CHK1-CENP B/MAD2 is associated with mild oxidative damage-induced sex chromosome aneuploidy of male mouse embryos during in vitro fertilization. Free Radic Biol Med 2019; 137:181-193. [PMID: 31042615 DOI: 10.1016/j.freeradbiomed.2019.04.037] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 04/26/2019] [Accepted: 04/26/2019] [Indexed: 02/05/2023]
Abstract
A high incidence of aneuploidy is observed in vitro fertilization (IVF)-derived embryos, but the formation and repair mechanisms are unknown. Here, we investigated the effects of slightly increased reactive oxygen species (ROS) produced by in vitro culture conditions on embryo aneuploidy and the roles of the spindle assembly checkpoint (SAC) protein, mitotic arrest-deficient 2 (MAD2), and the DNA damage response (DDR) protein, checkpoint kinase 1 (CHK1), in aneuploidy repair. By assessing chromosome abnormalities via DAPI staining, karyotype analysis and next-generation sequencing technology, we demonstrated that mild oxidative damage mainly increased the risk of sex chromosome aneuploidy in male mouse embryos (41,XXY,+X and 41,XYY,+Y) through chromosome mis-segregation during the first mitosis. Isobaric tags for relative and absolute quantitation technology revealed that mild oxidative damage inhibited the expression of male reproduction-related proteins, including a kinase anchor protein 4 (AKAP4), whose gene is located on mouse/human Chromosome X. Under mild oxidative damage, abrogation of MAD2 by MAD2 inhibitor-1 (M2I-1) or CHK1 by siRNA microinjection increased sex chromosome mosaicism rate and reduced mitosis-promoting factor (MPF) activity. CHK1 inhibition also reduced kinetochore localization of centromere protein B (CENP B) and MAD2. These findings show that DDR and SAC are responsible for repair of sex chromosome mosaicism via the pCHK1 (S345)-CENP B/MAD2-MPF pathway; further, IVF may have negative effects on male offspring's reproduction ability, which ultimately depends on their continued repair capability. Therefore, we suggest that antioxidants, especially those targeting improved CHK1-MAD2 function, may be a promising therapeutic strategy to reduce aneuploidy formation of IVF-derived embryos and to maintain genome integrity of embryo and offspring.
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Affiliation(s)
- Yue Huang
- Department of Reproductive Center, The First Affiliated Hospital of Shantou University Medical College, Shantou University, Shantou, 515000, Guangdong, China
| | - Siyao Ha
- Laboratory for Reproductive Immunology, Hospital & Institute of Obstetrics & Gynecology, Fudan University Shanghai Medical College, Shanghai, 200011, China
| | - Zhiling Li
- Department of Reproductive Center, The First Affiliated Hospital of Shantou University Medical College, Shantou University, Shantou, 515000, Guangdong, China.
| | - Jiena Li
- Department of Reproductive Center, The First Affiliated Hospital of Shantou University Medical College, Shantou University, Shantou, 515000, Guangdong, China
| | - Wanfen Xiao
- Department of Reproductive Center, The First Affiliated Hospital of Shantou University Medical College, Shantou University, Shantou, 515000, Guangdong, China
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Harayama H, Minami K, Kishida K, Noda T. Protein biomarkers for male artificial insemination subfertility in bovine spermatozoa. Reprod Med Biol 2017; 16:89-98. [PMID: 29259456 PMCID: PMC5661804 DOI: 10.1002/rmb2.12021] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 01/03/2017] [Indexed: 12/31/2022] Open
Abstract
Background Although artificial insemination (AI) technique is an established biotechnology for bovine reproduction, the results of AI (conception rates) have a tendency to decline gradually. To our annoyance, moreover, AI‐subfertile bulls have been occasionally found in the AI centers. To resolve these serious problems, it is necessary to control the sperm quality more strictly by the examinations of sperm molecules. Methods We reviewed a number of recent articles regarding potentials of bovine sperm proteins as the biomarkers for bull AI‐subfertility and also showed our unpublished supplemental data on the bull AI‐subfertility associated proteins. Main findings Bull AI‐subfertility is caused by the deficiency or dysfunctions of various molecules including regulatory proteins of ATP synthesis, acrosomal proteins, nuclear proteins, capacitation‐related proteins and seminal plasma proteins. Conclusion In order to control the bovine sperm quality more strictly by the molecular examinations, it is necessary to select suitable sperm protein biomarkers for the male reproductive problems which happen in the AI centers.
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Affiliation(s)
- Hiroshi Harayama
- Division of Animal Science Department of Bioresource Science Graduate School of Agricultural Science Kobe University Kobe Japan
| | - Kenta Minami
- Division of Animal Science Department of Bioresource Science Graduate School of Agricultural Science Kobe University Kobe Japan
| | - Kazumi Kishida
- Department of Obstetrics and Gynecology Shiga University of Medical Science Otsu Japan
| | - Taichi Noda
- Research Institute for Microbial Diseases Osaka University Suita Osaka Japan
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Changes in the distribution and molecular mass of boar sperm acrosome-associated 1 proteins during the acrosome reaction; their validity as indicators for occurrence of the true acrosome reaction. Anim Reprod Sci 2016; 172:94-104. [DOI: 10.1016/j.anireprosci.2016.07.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 06/28/2016] [Accepted: 07/12/2016] [Indexed: 01/01/2023]
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