1
|
Biswas L, Schindler K. Predicting Infertility: How Genetic Variants in Oocyte Spindle Genes Affect Egg Quality. ADVANCES IN ANATOMY, EMBRYOLOGY, AND CELL BIOLOGY 2024; 238:1-22. [PMID: 39030352 DOI: 10.1007/978-3-031-55163-5_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/21/2024]
Abstract
Successful reproduction relies on the union of a single chromosomally normal egg and sperm. Chromosomally normal eggs develop from precursor cells, called oocytes, that have undergone accurate chromosome segregation. The process of chromosome segregation is governed by the oocyte spindle, a unique cytoskeletal machine that splits chromatin content of the meiotically dividing oocyte. The oocyte spindle develops and functions in an idiosyncratic process, which is vulnerable to genetic variation in spindle-associated proteins. Human genetic variants in several spindle-associated proteins are associated with poor clinical fertility outcomes, suggesting that heritable etiologies for oocyte dysfunction leading to infertility exist and that the spindle is a crux for female fertility. This chapter examines the mammalian oocyte spindle through the lens of human genetic variation, covering the genes TUBB8, TACC3, CEP120, AURKA, AURKC, AURKB, BUB1B, and CDC20. Specifically, it explores how patient-identified variants perturb spindle development and function, and it links these molecular changes in the oocyte to their cognate clinical consequences, such as oocyte maturation arrest, elevated egg aneuploidy, primary ovarian insufficiency, and recurrent pregnancy loss. This discussion demonstrates that small genetic errors in oocyte meiosis can result in remarkably far-ranging embryonic consequences, and thus reveals the importance of the oocyte's fine machinery in sustaining life.
Collapse
Affiliation(s)
- Leelabati Biswas
- Department of Genetics, Rutgers University, Piscataway, NJ, USA
- Human Genetics Institute of New Jersey, Piscataway, NJ, USA
- Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA
| | - Karen Schindler
- Department of Genetics, Rutgers University, Piscataway, NJ, USA.
- Human Genetics Institute of New Jersey, Piscataway, NJ, USA.
| |
Collapse
|
2
|
Hu T, Li C, Qiao S, Liu W, Han W, Li W, Shi R, Xue X, Shi J, Huang G, Lin T. Novel variants in TUBB8 gene cause multiple phenotypic abnormalities in human oocytes and early embryos. J Ovarian Res 2023; 16:228. [PMID: 38007525 PMCID: PMC10675859 DOI: 10.1186/s13048-023-01274-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 09/03/2023] [Indexed: 11/27/2023] Open
Abstract
BACKGROUND The genotype-phenotype relationships between TUBB8 variants and female infertility are difficult to clearly define due to the complex inheritance patterns and the highly heterogeneous phenotypes. This study aims to identify novel TUBB8 variants and relevant phenotypes in more infertile females. METHODS A total of 35 females with primary infertility were recruited from two reproductive centers and investigated for identifying variants in TUBB8. Pedigree analysis, in-silico analysis and molecular remodeling were performed to assess their clinical significance. The effects of the variants on human oocytes and embryos as well as HeLa cells were analyzed by morphological observations, immunostaining and Western blot. RESULTS We totally identified five novel variants (p.G13R, p.Y50C, p.T136I, p.F265V and p.T366A) and five previously reported variants (p.I4L, p.L42V, p.Q134*, p.V255M and p.V349I) in TUBB8 from 9 unrelated females with primary infertility. These variants were rare and highly conserved among different species, and were inherited in autosomal dominant/recessive patterns, or occurred de novo. In vitro functional assays in HeLa cells revealed that exogenous expression of mutant TUBB8 proteins caused different degrees of microtubule structural disruption. The existence of these pathogenic TUBB8 variants finally induced oocyte maturation arrest or morphological abnormalities, fertilization failure, cleavage failure, embryonic development defects and implantation failure in the affected females. CONCLUSION These findings enriched the variant spectrum of TUBB8 gene and could contribute to optimize genetic counselling and clinical management of females with primary infertility.
Collapse
Affiliation(s)
- Tingwenyi Hu
- Chongqing Key Laboratory of Human Embryo Engineering, Center for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University, Chongqing, 400010, China
- Chongqing Clinical Research Center for Reproductive Medicine, Chongqing Health Center for Women and Children, Chongqing, 400010, China
| | - Chong Li
- Chongqing Key Laboratory of Human Embryo Engineering, Center for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University, Chongqing, 400010, China
- Chongqing Clinical Research Center for Reproductive Medicine, Chongqing Health Center for Women and Children, Chongqing, 400010, China
| | - Sen Qiao
- Reproductive Center, Northwest Women's and Children's Hospital, Xi'an, 710003, Shaanxi, China
| | - Weiwei Liu
- Chongqing Key Laboratory of Human Embryo Engineering, Center for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University, Chongqing, 400010, China
- Chongqing Clinical Research Center for Reproductive Medicine, Chongqing Health Center for Women and Children, Chongqing, 400010, China
| | - Wei Han
- Chongqing Key Laboratory of Human Embryo Engineering, Center for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University, Chongqing, 400010, China
- Chongqing Clinical Research Center for Reproductive Medicine, Chongqing Health Center for Women and Children, Chongqing, 400010, China
| | - Wei Li
- Reproductive Center, Northwest Women's and Children's Hospital, Xi'an, 710003, Shaanxi, China
| | - Rong Shi
- Reproductive Center, Northwest Women's and Children's Hospital, Xi'an, 710003, Shaanxi, China
| | - Xia Xue
- Reproductive Center, Northwest Women's and Children's Hospital, Xi'an, 710003, Shaanxi, China
| | - Juanzi Shi
- Reproductive Center, Northwest Women's and Children's Hospital, Xi'an, 710003, Shaanxi, China.
| | - Guoning Huang
- Chongqing Key Laboratory of Human Embryo Engineering, Center for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University, Chongqing, 400010, China.
- Chongqing Clinical Research Center for Reproductive Medicine, Chongqing Health Center for Women and Children, Chongqing, 400010, China.
| | - Tingting Lin
- Chongqing Key Laboratory of Human Embryo Engineering, Center for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University, Chongqing, 400010, China.
- Chongqing Clinical Research Center for Reproductive Medicine, Chongqing Health Center for Women and Children, Chongqing, 400010, China.
| |
Collapse
|
3
|
Ebru H, Dahan MH, Sezer O, Başbuğ A, Kaan H, Güngör ND, Baltacı V, Tan SL, Şafak H. TUBB8 mutations as a cause of oocyte maturation abnormalities: presentation of oocyte and embryo profiles and novel mutations. Reprod Biomed Online 2023; 47:103257. [PMID: 37672871 DOI: 10.1016/j.rbmo.2023.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 06/15/2023] [Accepted: 06/18/2023] [Indexed: 09/08/2023]
Abstract
RESEARCH QUESTION What are the embryonic profiles and oocyte maturation dynamics in patients with tubulin beta eight class VIII (TUBB8) mutations leading to oocyte maturation abnormalities (OMAS), and are pregnancies possible in this population? DESIGN A prospective cohort study was undertaken in a private fertility clinic between January 2019 and December 2022. Whole-exome genomic studies (WES) were performed to detect mutation types. In-vitro maturation (IVM) was compared in 18 subjects: nine with TUBB8 mutations, and nine without TUBB8 mutations to act as the control group. The distributions of oocyte maturation and embryonic development profiles were recorded. IVF and IVM outcomes of the 18 cases were evaluated. The primary outcomes were the embryonic profiles and maturation dynamics of oocytes derived from IVF or IVM in women as related to TUBB8 mutations. RESULTS Mutations were detected in 52 of 89 (58.4%) women who underwent WES analysis. Twelve TUBB8 mutations were detected in nine women (10.1%) with OMAS. Seven novel TUBB8 mutations were noted. Two pregnancies were obtained in women with c.535 G>A TUBB8 mutations. When comparing IVM outcomes between women with and without TUBB8 mutations, there were no differences in oocyte, embryo or pregnancy parameters (P>0.05 in all cases). CONCLUSIONS It is clear that further TUBB8 mutations which cause oocyte or embryonic arrest will be detected in future. Although biochemical or ectopic pregnancies may be possible in some of these women, no live births or ongoing pregnancies have been reported to date.
Collapse
Affiliation(s)
| | - Michael H Dahan
- Department of Obstetrics and Gynecology, McGill University, Montreal, Quebec, Canada; OriginElle Fertility Centre, OriginElle Fertility Clinic and Women's Health Centre, Montreal, Quebec, Canada
| | - Ozlem Sezer
- Department of Medical Genetics, Faculty of Medicine, Samsun University, Samsun, Turkey
| | - Alper Başbuğ
- Department of Obstetrics and Gynaecology, Düzce University, Düzce, Turkey
| | - Hatirnaz Kaan
- Department of Molecular Biology and Genetics, Faculty of Science, Ondokuzmayıs University, Samsun, Turkey
| | - Nur Dokuzeylül Güngör
- Department of Obstetrics and Gynaecology, BAU Medikalpark Göztepe Hospital, Istanbul, Turkey
| | - Volkan Baltacı
- Medical Genetics, School of Medicine, Yüksek Ihtisas University, Ankara, Turkey; Microgen Genetic Diagnosis Centre, Ankara, Turkey
| | - Seang Lin Tan
- Department of Obstetrics and Gynecology, McGill University, Montreal, Quebec, Canada; OriginElle Fertility Centre, OriginElle Fertility Clinic and Women's Health Centre, Montreal, Quebec, Canada
| | | |
Collapse
|
4
|
Boroujeni PB, Rooney K, Alikhani M, Rahmati S, Feli G, Haratian K, Movaghar B, Meybodi AM. Evaluation of TUBB8 gene alterations in infertile women with oocyte maturation and cleavage arrest referred to Royan Institute. Reprod Biomed Online 2023; 47:103226. [PMID: 37597348 DOI: 10.1016/j.rbmo.2023.04.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 04/25/2023] [Accepted: 04/27/2023] [Indexed: 08/21/2023]
Abstract
RESEARCH QUESTION Are TUBB8 gene variations present in Iranian infertile women with oocyte maturation arrest or embryo cleavage arrest? DESIGN TUBB8 gene variations were investigated by polymerase chain reaction sequencing on blood samples from 16 women with oocyte maturation arrest and 12 women with cleavage arrest, collectively referred to as the experimental cohort, as well as 56 fertile women as the control group. The Exome Sequencing Project and dbSNP databases and the Genome Aggregation Database were used to search the frequency of corresponding variants. PolyPhen and SIFT were used to conduct in-silico analysis of gene variations and Align-GVGD was used to predict the effect of missense variants on proteins. The homology modelling and structure evaluation of variations was also checked. RESULTS Two likely pathogenic variants [c.713C>T (p.Thr238Met), c.1054G>T (p.Ala352Ser)] were identified in patients with oocyte maturation arrest and one likely pathogenic variant [c.G763A, (p.Val255Met)] was identified in a patient with cleavage arrest. These changes were absent in controls. CONCLUSIONS Three deleterious variants in TUBB8 related to oocyte maturation arrest or cleavage arrest and infertility were identified. TUBB8 variant screening for patients with oocyte maturation and cleavage arrest is recommended.
Collapse
Affiliation(s)
- Parnaz Borjian Boroujeni
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Kathleen Rooney
- Molecular Genetics Laboratory, Molecular Diagnostics Division, London Health Sciences Centre, London, Ontario, Canada; Department of Pathology and Laboratory Medicine, Western University, London, Ontario, Canada
| | - Mehdi Alikhani
- Department of Molecular Systems Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Saman Rahmati
- Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Ghazaleh Feli
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Kaveh Haratian
- Department of Microbiology and Immunology, Medical School, Alborz University of Medical Sciences, Karaj, Iran
| | - Bahar Movaghar
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran.
| | - Anahita Mohseni Meybodi
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran; Molecular Genetics Laboratory, Molecular Diagnostics Division, London Health Sciences Centre, London, Ontario, Canada; Department of Pathology and Laboratory Medicine, Western University, London, Ontario, Canada.
| |
Collapse
|
5
|
Wang W, Guo J, Shi J, Li Q, Chen B, Pan Z, Qu R, Fu J, Shi R, Xue X, Mu J, Zhang Z, Wu T, Wang W, Zhao L, Li Q, He L, Sun X, Sang Q, Lin G, Wang L. Bi-allelic pathogenic variants in PABPC1L cause oocyte maturation arrest and female infertility. EMBO Mol Med 2023:e17177. [PMID: 37052235 DOI: 10.15252/emmm.202217177] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 04/14/2023] Open
Abstract
Oocyte maturation arrest is one of the important causes of female infertility, but the genetic factors remain largely unknown. PABPC1L, a predominant poly(A)-binding protein in Xenopus, mouse, and human oocytes and early embryos prior to zygotic genome activation, plays a key role in translational activation of maternal mRNAs. Here, we identified compound heterozygous and homozygous variants in PABPC1L that are responsible for female infertility mainly characterized by oocyte maturation arrest in five individuals. In vitro studies demonstrated that these variants resulted in truncated proteins, reduced protein abundance, altered cytoplasmic localization, and reduced mRNA translational activation by affecting the binding of PABPC1L to mRNA. In vivo, three strains of Pabpc1l knock-in (KI) female mice were infertile. RNA-sequencing analysis showed abnormal activation of the Mos-MAPK pathway in the zygotes of KI mice. Finally, we activated this pathway in mouse zygotes by injecting human MOS mRNA, and this mimicked the phenotype of KI mice. Our findings reveal the important roles of PABPC1L in human oocyte maturation and add a genetic potential candidate gene to be screened for causes of infertility.
Collapse
Affiliation(s)
- Weijie Wang
- Institute of Pediatrics, Children's Hospital of Fudan University, the Shanghai Key Laboratory of Medical Epigenetics, the Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, China
| | - Jing Guo
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
| | - Juanzi Shi
- Reproductive Medicine Center, Shaanxi Maternal and Child Care Service Center, Xi'an, China
| | - Qun Li
- Institute of Pediatrics, Children's Hospital of Fudan University, the Shanghai Key Laboratory of Medical Epigenetics, the Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, China
- Human Phenome Institute, Fudan University, Shanghai, China
| | - Biaobang Chen
- NHC Key Lab of Reproduction Regulation (Shanghai Institute for Biomedical and Pharmaceutical Technologies), Fudan University, Shanghai, China
| | - Zhiqi Pan
- Institute of Pediatrics, Children's Hospital of Fudan University, the Shanghai Key Laboratory of Medical Epigenetics, the Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, China
| | - Ronggui Qu
- Institute of Pediatrics, Children's Hospital of Fudan University, the Shanghai Key Laboratory of Medical Epigenetics, the Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, China
| | - Jing Fu
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
| | - Rong Shi
- Reproductive Medicine Center, Shaanxi Maternal and Child Care Service Center, Xi'an, China
| | - Xia Xue
- Reproductive Medicine Center, Shaanxi Maternal and Child Care Service Center, Xi'an, China
| | - Jian Mu
- Institute of Pediatrics, Children's Hospital of Fudan University, the Shanghai Key Laboratory of Medical Epigenetics, the Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, China
| | - Zhihua Zhang
- Institute of Pediatrics, Children's Hospital of Fudan University, the Shanghai Key Laboratory of Medical Epigenetics, the Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, China
| | - Tianyu Wu
- Institute of Pediatrics, Children's Hospital of Fudan University, the Shanghai Key Laboratory of Medical Epigenetics, the Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, China
| | - Wenjing Wang
- Institute of Pediatrics, Children's Hospital of Fudan University, the Shanghai Key Laboratory of Medical Epigenetics, the Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, China
| | - Lin Zhao
- Institute of Pediatrics, Children's Hospital of Fudan University, the Shanghai Key Laboratory of Medical Epigenetics, the Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, China
| | - Qiaoli Li
- Institute of Pediatrics, Children's Hospital of Fudan University, the Shanghai Key Laboratory of Medical Epigenetics, the Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, China
| | - Lin He
- Bio-X Center, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaoxi Sun
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
| | - Qing Sang
- Institute of Pediatrics, Children's Hospital of Fudan University, the Shanghai Key Laboratory of Medical Epigenetics, the Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, China
| | - Ge Lin
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
| | - Lei Wang
- Institute of Pediatrics, Children's Hospital of Fudan University, the Shanghai Key Laboratory of Medical Epigenetics, the Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, China
| |
Collapse
|
6
|
Zhang J, Li S, Huang F, Xu R, Wang D, Song T, Liang B, Liu D, Chen J, Shi X, Huang HL. A novel compound heterozygous mutation in TUBB8 causing early embryonic developmental arrest. J Assist Reprod Genet 2023; 40:753-763. [PMID: 36735156 PMCID: PMC10224908 DOI: 10.1007/s10815-023-02734-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 01/19/2023] [Indexed: 02/04/2023] Open
Abstract
PURPOSE Mutations in the β-tubulin isotype, TUBB8, can cause female infertility. Although several mutations of TUBB8 have been reported, the full spectrum for guiding genetics counseling still needs to be further explored. Here, we sought to identify novel variants in TUBB8 and their phenotypic effects on microtubule network structure in vitro. METHODS Whole-exome sequence analysis was performed in two families with infertility to detect pathogenic variants, with validation by Sanger sequencing. All gene variants and protein structures were predicted in silico. Cells were transfected with wild-type and mutants, and immunofluorescence analysis was performed to visualize microtubule network changes. RESULTS We detected a novel compound heterozygous mutation, c.915_916delCC (p.Arg306Serfs*21) and c.82C > T (p.His28Tyr), and a benign heterozygous variant c.1286C > T (p.Thr429Met) in TUBB8 in the two families. Female patients with p.Arg306Serfs*21 and p.His28Tyr were infertile with early embryonic developmental arrest. The female patient with p.Thr429Met gave birth to a healthy baby in the second in vitro fertilization frozen embryo transfer cycle. The p.Arg306Serfs*21 mutation was predicted to cause large structural alteration in the TUBB8 protein and was confirmed to produce a truncated and trace protein by western blot analysis. Immunofluorescence analysis of transfected HeLa cells showed that p.Arg306Serfs*21 significantly disrupted microtubule structure. CONCLUSIONS Our findings expand the known mutational spectrum of TUBB8 associated with early embryonic developmental arrest and female infertility.
Collapse
Affiliation(s)
- Jing Zhang
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The Second Xiangya Hospital, Central South University, No. 139, Renmin Middle Road, Changsha, 410011, Hunan, China
| | - Suping Li
- Reproductive Medicine Center, Chenzhou No. 1 People's Hospital, Chenzhou, 412000, Hunan, China
| | - Fei Huang
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The Second Xiangya Hospital, Central South University, No. 139, Renmin Middle Road, Changsha, 410011, Hunan, China
| | - Ru Xu
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The Second Xiangya Hospital, Central South University, No. 139, Renmin Middle Road, Changsha, 410011, Hunan, China
| | - Dao Wang
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The Second Xiangya Hospital, Central South University, No. 139, Renmin Middle Road, Changsha, 410011, Hunan, China
| | - Tian Song
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The Second Xiangya Hospital, Central South University, No. 139, Renmin Middle Road, Changsha, 410011, Hunan, China
| | - Boluo Liang
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The Second Xiangya Hospital, Central South University, No. 139, Renmin Middle Road, Changsha, 410011, Hunan, China
| | - Dan Liu
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The Second Xiangya Hospital, Central South University, No. 139, Renmin Middle Road, Changsha, 410011, Hunan, China
| | - Jianlin Chen
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The Second Xiangya Hospital, Central South University, No. 139, Renmin Middle Road, Changsha, 410011, Hunan, China
| | - Xiaobo Shi
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The Second Xiangya Hospital, Central South University, No. 139, Renmin Middle Road, Changsha, 410011, Hunan, China
| | - Hua-Lin Huang
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The Second Xiangya Hospital, Central South University, No. 139, Renmin Middle Road, Changsha, 410011, Hunan, China.
| |
Collapse
|
7
|
Yu W, Zhang S, Yin B, Dong C, Zhang VW, Zhang C. Identification of TUBB8 Variants in 5 Primary Infertile Women with Multiple Phenotypes in Oocytes and Early Embryos. Reprod Sci 2023; 30:1376-1382. [PMID: 36197634 PMCID: PMC10159944 DOI: 10.1007/s43032-022-01079-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 09/02/2022] [Indexed: 10/10/2022]
Abstract
Tubulin beta 8 class VIII (TUBB8) is a β-tubulin isotype that is specifically expressed in human oocytes and early embryos. It has been identified as a disease-causing gene in primary female infertility by affecting oocyte maturation arrest. This study investigated the genetic cause of female infertility in five patients from four families. Five women with primary infertility were recruited. Medical-exome sequencing and Sanger sequencing were performed on the patients, and their family members to identify candidate genes that explained infertility. Additionally, the morphology of oocytes and zygotes from the patients and controls were assessed. We observed recurrent oocytes MI arrest, oocytes abnormal fertilization, uncleaved embryos, and embryo transfer failure in the patients. Heterozygous missense variants in TUBB8, c.538G > A (p.V180M), c.527C > G (p.S176W), c.124C > G (p.L42V), and c.628A > C (p.I210L), were verified in four unrelated families. This study expanded the mutational spectrum of TUBB8 by identifying three novel heterozygous missense variants. Screening for TUBB8 mutation demonstrated the diagnostic utility of female infertility.
Collapse
Affiliation(s)
- Wenzhu Yu
- Department of Reproductive Medicine Center, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, and Henan Provincial People's Hospital of Henan University, Zhengzhou, Henan, China
- Henan Joint International Research Laboratory of Reproductive Bioengineering, Zhengzhou, Henan, China
| | - Shaodi Zhang
- Department of Reproductive Medicine Center, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, and Henan Provincial People's Hospital of Henan University, Zhengzhou, Henan, China.
- Henan Joint International Research Laboratory of Reproductive Bioengineering, Zhengzhou, Henan, China.
| | - Baoli Yin
- Department of Reproductive Medicine Center, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, and Henan Provincial People's Hospital of Henan University, Zhengzhou, Henan, China
- Henan Joint International Research Laboratory of Reproductive Bioengineering, Zhengzhou, Henan, China
| | - Chang Dong
- AmCare Genomics Lab, Guangzhou, Guangdong, China
| | | | - Cuilian Zhang
- Department of Reproductive Medicine Center, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, and Henan Provincial People's Hospital of Henan University, Zhengzhou, Henan, China.
- Henan Joint International Research Laboratory of Reproductive Bioengineering, Zhengzhou, Henan, China.
| |
Collapse
|
8
|
Lin T, Liu W, Han W, Tong K, Xiang Y, Liao H, Chen K, He Y, Liu D, Huang G. Genetic screening and analysis of TUBB8 variants in females seeking ART. Reprod Biomed Online 2023; 46:244-254. [PMID: 36463079 DOI: 10.1016/j.rbmo.2022.10.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 10/07/2022] [Accepted: 10/13/2022] [Indexed: 11/27/2022]
Abstract
RESEARCH QUESTION More than 100 variants have been identified in the TUBB8 gene, which account for approximately 30% of infertile women with oocyte maturation defects. But what is the correlation between the highly phenotypic diversity and genetic variability? Are there other variants in TUBB8 related to female infertility? DESIGN TUBB8 resequencing was performed in 80 female subjects who were experiencing infertility and were seeking treatment with assisted reproductive technologies (ART), or had ever experienced ART failure due to oocyte maturation defects. All variants were evaluated with pedigree analysis, population frequency, in-silico analysis and molecular modelling. The effects of the variants on oocytes/arrested embryos were assessed by morphological observations, immunostaining, embryo biopsies and chromosome euploidy analysis. RESULTS Nine missense variants and two frameshift variants from an additional 15 families were identified, including four novel variants and seven previously reported recurrent variants. These TUBB8 variants were related to highly variable phenotypes, including abnormalities in oocyte maturation or morphology, fertilization failure, embryonic development abnormalities and implantation failure. Also further clarified were the incomplete penetrance of heterozygous p.E108K, the likely benign significance of heterozygous p.A313V and the clinical effect of a novel variant of p.R380C. CONCLUSIONS This study significantly expands the variant spectrum of the TUBB8 gene and, together with the available findings on TUBB8 variants and female infertility, will potentially facilitate the genetic counselling of infertile women in future.
Collapse
Affiliation(s)
- Tingting Lin
- Center for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University Chongqing, China; Chongqing Health Center for Women and Children Chongqing, China; Chongqing Key Laboratory of Human Embryo Engineering Chongqing, China
| | - Weiwei Liu
- Center for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University Chongqing, China; Chongqing Health Center for Women and Children Chongqing, China
| | - Wei Han
- Center for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University Chongqing, China; Chongqing Health Center for Women and Children Chongqing, China
| | - Keya Tong
- Center for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University Chongqing, China; Chongqing Health Center for Women and Children Chongqing, China
| | - Yezhou Xiang
- Center for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University Chongqing, China; Chongqing Health Center for Women and Children Chongqing, China
| | - Haiyuan Liao
- Center for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University Chongqing, China; Chongqing Health Center for Women and Children Chongqing, China
| | - Ke Chen
- Center for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University Chongqing, China; Chongqing Health Center for Women and Children Chongqing, China
| | - Yao He
- Center for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University Chongqing, China; Chongqing Health Center for Women and Children Chongqing, China
| | - Dongyun Liu
- Center for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University Chongqing, China; Chongqing Health Center for Women and Children Chongqing, China.
| | - Guoning Huang
- Center for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University Chongqing, China; Chongqing Health Center for Women and Children Chongqing, China; Chongqing Key Laboratory of Human Embryo Engineering Chongqing, China.
| |
Collapse
|
9
|
Li W, Li Q, Xu X, Wang C, Hu K, Xu J. Novel mutations in TUBB8 and ZP3 cause human oocyte maturation arrest and female infertility. Eur J Obstet Gynecol Reprod Biol 2022; 279:132-139. [DOI: 10.1016/j.ejogrb.2022.10.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 09/25/2022] [Accepted: 10/23/2022] [Indexed: 11/26/2022]
|
10
|
Attard TJ, Welburn JPI, Marsh JA. Understanding molecular mechanisms and predicting phenotypic effects of pathogenic tubulin mutations. PLoS Comput Biol 2022; 18:e1010611. [PMID: 36206299 PMCID: PMC9581425 DOI: 10.1371/journal.pcbi.1010611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 10/19/2022] [Accepted: 09/28/2022] [Indexed: 11/21/2022] Open
Abstract
Cells rely heavily on microtubules for several processes, including cell division and molecular trafficking. Mutations in the different tubulin-α and -β proteins that comprise microtubules have been associated with various diseases and are often dominant, sporadic and congenital. While the earliest reported tubulin mutations affect neurodevelopment, mutations are also associated with other disorders such as bleeding disorders and infertility. We performed a systematic survey of tubulin mutations across all isotypes in order to improve our understanding of how they cause disease, and increase our ability to predict their phenotypic effects. Both protein structural analyses and computational variant effect predictors were very limited in their utility for differentiating between pathogenic and benign mutations. This was even worse for those genes associated with non-neurodevelopmental disorders. We selected tubulin-α and -β disease mutations that were most poorly predicted for experimental characterisation. These mutants co-localise to the mitotic spindle in HeLa cells, suggesting they may exert dominant-negative effects by altering microtubule properties. Our results show that tubulin mutations represent a blind spot for current computational approaches, being much more poorly predicted than mutations in most human disease genes. We suggest that this is likely due to their strong association with dominant-negative and gain-of-function mechanisms.
Collapse
Affiliation(s)
- Thomas J. Attard
- Wellcome Trust Centre for Cell Biology, School of Biological Sciences, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - Julie P. I. Welburn
- Wellcome Trust Centre for Cell Biology, School of Biological Sciences, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - Joseph A. Marsh
- MRC Human Genetics Unit, Institute of Genetics & Cancer, University of Edinburgh, Edinburgh, United Kingdom
| |
Collapse
|
11
|
Fei CF, Zhou LQ. Gene mutations impede oocyte maturation, fertilization, and early embryonic development. Bioessays 2022; 44:e2200007. [PMID: 35900055 DOI: 10.1002/bies.202200007] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 07/09/2022] [Accepted: 07/11/2022] [Indexed: 12/11/2022]
Abstract
Reproductive diseases are a long-standing problem and have become more common in the world. Currently, 15% of the world's population suffers from infertility, and half of them are women. Maturation of oocytes, successful fertilization, and high-quality embryos are prerequisites for pregnancy. With the development of assisted reproductive technology and advanced genetic assays, we have found that infertility in many young female patients is caused by mutations in various developmental regulators. These pathogenic factors may result in impediment of oocyte maturation, failure of fertilization or early embryonic development arrest. In this review, we categorize these clinically-identified, mutated genetic factors by their molecular characteristics: nuclear factors (PALT2, TRIP13, WEE2, TBPL2, REC114, MEI1 and CDC20), cytoplasmic factors (TLE6, PADI6, NLRP2/5, FBXO43, MOS and BTG4), a factor unique to primates (TUBB8), cell membrane factor (PANX1), and zona pellucida factors (ZP1-3). We compared discrepancies observed in phenotypes between human and mouse models to provide clues for clinical diagnosis and treatment of related reproductive diseases.
Collapse
Affiliation(s)
- Cai-Feng Fei
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Li-Quan Zhou
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| |
Collapse
|
12
|
Yao Z, Zeng J, Zhu H, Zhao J, Wang X, Xia Q, Li Y, Wu L. Mutation analysis of the TUBB8 gene in primary infertile women with oocyte maturation arrest. J Ovarian Res 2022; 15:38. [PMID: 35354490 PMCID: PMC8969352 DOI: 10.1186/s13048-022-00971-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 03/16/2022] [Indexed: 11/22/2022] Open
Abstract
Background Oocyte maturation arrest at metaphase I leads to fertilization failure in humans. In early embryos, the tubulin beta 8 class VIII (TUBB8) encodes a β-tubulin isotype and aids in the assembling of the human oocyte spindle. Mutations in the TUBB8 potentially interfere with human oocyte maturation—a crucial prerequisite for fertilization and subsequent embryonic development. This study aims to investigate the novel mutations in TUBB8 and their prevalence. Results Hundred fertile women (controls) and eleven infertile women with oocyte maturation arrest were chosen for the study. A total of five TUBB8 heterozygous/homozygous mutations were found in eleven infertile females (p.A313V, p.C239W, p.R251Q, p.P358L, and p.G96R). The Exome Aggregation Consortium (ExAC), SIFT, and PolyPhen-2 analyses revealed that p. A313V has unknown pathogenicity and p.C239W, p.R251Q, p.P358L, and p.G96R have possible pathogenicity. The wild-type (WT) and four mutant gene constructs were transfected to Hela cells. The Western blot analysis indicates that the TUBB8 expression of the p.C239W, p.R251Q, and p.G96R mutations was significantly decreased than that of WT. The immunofluorescence assay showed that the Hela cells transfected with either p.C239W, p.R251Q, or p.G96R mutations exhibited the disrupted microtubule structure, revealing a significant difference in the organization of the microtubule network compared to the WT. Conclusions We identified three novel variants and two reported variants out of 11 infertile women with oocyte metaphase I arrest. According to the present data, TUBB8 gene variants account for 31.96% of all participants (109/341) with oocyte maturation arrest. Supplementary Information The online version contains supplementary material available at 10.1186/s13048-022-00971-9.
Collapse
Affiliation(s)
- Zhongyuan Yao
- Reproductive Medicine Center, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China.,Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, 410078, Hunan, China
| | - Jun Zeng
- Reproductive Medicine Center, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China
| | - Huimin Zhu
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, 410078, Hunan, China
| | - Jing Zhao
- Reproductive Medicine Center, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China.,Clinical Research Center for Women's, Reproductive Health in Hunan Province, Hunan, China
| | - Xiaoxia Wang
- Reproductive Medicine Center, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China
| | - Qiuping Xia
- Reproductive Medicine Center, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China.,Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, 410078, Hunan, China
| | - Yanping Li
- Reproductive Medicine Center, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China. .,Clinical Research Center for Women's, Reproductive Health in Hunan Province, Hunan, China.
| | - Lingqian Wu
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, 410078, Hunan, China.
| |
Collapse
|
13
|
Hatırnaz Ş, Hatırnaz ES, Ellibeş Kaya A, Hatırnaz K, Soyer Çalışkan C, Sezer Ö, Dokuzeylül Güngor N, Demirel C, Baltacı V, Tan S, Dahan M. Oocyte maturation abnormalities - A systematic review of the evidence and mechanisms in a rare but difficult to manage fertility pheneomina. Turk J Obstet Gynecol 2022; 19:60-80. [PMID: 35343221 PMCID: PMC8966321 DOI: 10.4274/tjod.galenos.2022.76329] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
A small proportion of infertile women experience repeated oocyte maturation abnormalities (OMAS). OMAS include degenerated and dysmorphic oocytes, empty follicle syndrome, oocyte maturation arrest (OMA), resistant ovary syndrome and maturation defects due to primary ovarian insufficiency. Genetic factors play an important role in OMAS but still need specifications. This review documents the spectrum of OMAS and to evaluate the multiple subtypes classified as OMAS. In this review, readers will be able to understand the oocyte maturation mechanism, gene expression and their regulation that lead to different subtypes of OMAs, and it will discuss the animal and human studies related to OMAS and lastly the treatment options for OMAs. Literature searches using PubMed, MEDLINE, Embase, National Institute for Health and Care Excellence were performed to identify articles written in English focusing on Oocyte Maturation Abnormalities by looking for the following relevant keywords. A search was made with the specified keywords and included books and documents, clinical trials, animal studies, human studies, meta-analysis, randomized controlled trials, reviews, systematic reviews and options written in english. The search detected 3,953 sources published from 1961 to 2021. After title and abstract screening for study type, duplicates and relevancy, 2,914 studies were excluded. The remaining 1,039 records were assessed for eligibility by full-text reading and 886 records were then excluded. Two hundred and twenty seven full-text articles and 0 book chapters from the database were selected for inclusion. Overall, 227 articles, one unpublished and one abstract paper were included in this final review. In this review study, OMAS were classified and extensively evaluatedand possible treatment options under the light of current information, present literature and ongoing studies. Either genetic studies or in vitro maturation studies that will be handled in the future will lead more informations to be reached and may make it possible to obtain pregnancies.
Collapse
Affiliation(s)
- Şafak Hatırnaz
- Medicana Samsun International Hospital, In Vitro Fertilization-In Vitro Maturation Unit, Samsun, Turkey
| | - Ebru Saynur Hatırnaz
- Medicana Samsun International Hospital, In Vitro Fertilization-In Vitro Maturation Unit, Samsun, Turkey
| | - Aşkı Ellibeş Kaya
- Private Office, Clinic of Obstetrics and Gynecology Specialist, Samsun, Turkey
| | - Kaan Hatırnaz
- Ondokuz Mayıs University Faculty of Medicine, Department of Molecular Biology and Genetics, Samsun, Turkey
| | - Canan Soyer Çalışkan
- University of Health Sciences Turkey, Samsun Training and Research Hospital, Clinic of Obstetrics and Gynecology, Samsun, Turkey
| | - Özlem Sezer
- University of Health Sciences Turkey, Samsun Training and Research Hospital, Clinic of Genetics, Samsun, Turkey
| | | | - Cem Demirel
- Memorial Ataşehir Hospital, In Vitro Fertilization Unit, İstanbul, Turkey
| | | | - Seang Tan
- James Edmund Dodds Chair in ObGyn, Department of ObGyn, McGill University, OriginElle Fertility Clinic and Women, QC, Canada
| | - Michael Dahan
- McGill Reproductive Centre, Department of ObGyn, McGill University Montreal, Quebec, Canada
| |
Collapse
|
14
|
Picchetta L, Caroselli S, Figliuzzi M, Cogo F, Zambon P, Costa M, Pergher I, Patassini C, Cortellessa F, Zuccarello D, Poli M, Capalbo A. Molecular tools for the genomic assessment of oocyte’s reproductive competence. J Assist Reprod Genet 2022; 39:847-860. [PMID: 35124783 PMCID: PMC9050973 DOI: 10.1007/s10815-022-02411-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 01/24/2022] [Indexed: 12/15/2022] Open
Abstract
The most important factor associated with oocytes' developmental competence has been widely identified as the presence of chromosomal abnormalities. However, growing application of genome-wide sequencing (GS) in population diagnostics has enabled the identification of multifactorial genetic predispositions to sub-lethal pathologies, including those affecting IVF outcomes and reproductive fitness. Indeed, GS analysis in families with history of isolated infertility has recently led to the discovery of new genes and variants involved in specific human infertility endophenotypes that impact the availability and the functionality of female gametes by altering unique mechanisms necessary for oocyte maturation and early embryo development. Ongoing advancements in analytical and bioinformatic pipelines for the study of the genetic determinants of oocyte competence may provide the biological evidence required not only for improving the diagnosis of isolated female infertility but also for the development of novel preventive and therapeutic approaches for reproductive failure. Here, we provide an updated discussion and review of the progresses made in preconception genomic medicine in the identification of genetic factors associated with oocyte availability, function, and competence.
Collapse
|
15
|
Huo M, Zhang Y, Shi S, Shi H, Liu Y, Zhang L, Wang Y, Niu W. Gene Spectrum and Clinical Traits of Nine Patients With Oocyte Maturation Arrest. Front Genet 2022; 13:772143. [PMID: 35140748 PMCID: PMC8819080 DOI: 10.3389/fgene.2022.772143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 01/03/2022] [Indexed: 11/13/2022] Open
Abstract
Background: Oocyte maturation arrest is a disease that produces immature oocytes and cannot be mature after culturing in vitro, which leads to female primary infertility. We aimed to summarize nine representative patients in our center to retrospectively analyze the genetic variants and clinical characteristics of oocyte maturation arrest. Methods: This study examined and analyzed nine families with oocyte maturation arrest. Whole-exome sequencing (WES) of the probands was performed to detect the pathogenic variants. Sanger sequencing verified the WES findings in patients and available parents. ExAC database was used to search the variant frequency. The variants were assessed by pathogenicity and conservational property prediction analysis and according to the American College of Medical Genetics and Genomics (ACMG). Phenotypes of oocytes were evaluated by a light microscopy, and the phenotype-genotype correlation was also evaluated. Results: Nine pathogenic variants in five genes were detected in nine patients, of which three were novel variants, including PATL2 [c.1374A > G (p. Ile458Met)] and [1289-1291del TCC (p. Leu430del)] and ZP2 [c.1543C > T (p. Pro515Ser)]. Nine variants were predicted to be pathogenic, resulting in different types of oocyte maturation arrest and clinical phenotypes. Conclusion: Three novel pathogenic variants were identified, enabling the expansion of the gene variant spectrum. The related pathogenic mutations of the PATL2, TUBB8, and ZP1∼3 genes were highly suggestive of being causative of oocyte maturation arrest.
Collapse
Affiliation(s)
- Mingzhu Huo
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Provincial Obstetrical and Gynecological Diseases (Reproductive Medicine) Clinical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Engineering Laboratory of Preimplantation Genetic Diagnosis and Screening, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yile Zhang
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Provincial Obstetrical and Gynecological Diseases (Reproductive Medicine) Clinical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Engineering Laboratory of Preimplantation Genetic Diagnosis and Screening, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Senlin Shi
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Provincial Obstetrical and Gynecological Diseases (Reproductive Medicine) Clinical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Engineering Laboratory of Preimplantation Genetic Diagnosis and Screening, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Hao Shi
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Provincial Obstetrical and Gynecological Diseases (Reproductive Medicine) Clinical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Engineering Laboratory of Preimplantation Genetic Diagnosis and Screening, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yidong Liu
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Provincial Obstetrical and Gynecological Diseases (Reproductive Medicine) Clinical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Engineering Laboratory of Preimplantation Genetic Diagnosis and Screening, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Lingyun Zhang
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Provincial Obstetrical and Gynecological Diseases (Reproductive Medicine) Clinical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Engineering Laboratory of Preimplantation Genetic Diagnosis and Screening, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yanchi Wang
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Provincial Obstetrical and Gynecological Diseases (Reproductive Medicine) Clinical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Engineering Laboratory of Preimplantation Genetic Diagnosis and Screening, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wenbin Niu
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Provincial Obstetrical and Gynecological Diseases (Reproductive Medicine) Clinical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Engineering Laboratory of Preimplantation Genetic Diagnosis and Screening, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- *Correspondence: Wenbin Niu,
| |
Collapse
|
16
|
Cao T, Guo J, Xu Y, Lin X, Deng W, Cheng L, Zhao H, Jiang S, Gao M, Huang J, Xu Y. Two mutations in TUBB8 cause developmental arrest in human oocytes and early embryos. Reprod Biomed Online 2021; 43:891-898. [PMID: 34509376 DOI: 10.1016/j.rbmo.2021.07.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 07/27/2021] [Accepted: 07/28/2021] [Indexed: 01/08/2023]
Abstract
RESEARCH QUESTION How can the effect of genetic mutations that may cause primary female infertility be evaluated? DESIGN Patients and their family members underwent whole-exome sequencing and Sanger sequencing to detect the infertility-causing gene and inheritance pattern. To study the function of mutant proteins in vitro, vectors containing wild-type or mutant TUBB8 cDNA were constructed for transient expression in HeLa cells, and in-vitro transcribed mRNA were used for microinjection in germinal vesicle-stage mouse oocytes. Immunofluorescence staining was used to observe the microtubule structure in HeLa cells or meiotic spindle in mouse oocytes. RESULTS A maternally inherited TUBB8 (Tubulin beta 8 class VIII) mutation (NM_177987.2: c. 959G>A: p. R320H) and a previously reported (NM_177987.2: c. 161C>T: p. A54V) recessive mutation from two infertile female patients were identified. The oocytes from the patient carrying p.A54V mutation failed fertilization, whereas oocytes with p.R320H mutation could be fertilized but showed heavy fragmentation during early development. In vitro, functional assays showed that p. A54V mutant disrupted the microtubule structure in HeLa cells (49.3% of transfected cells) and caused large polar body extrusion in mouse oocytes (27.5%), whereas the p.R320H mutant caused a higher abnormal rate (69.7%) in cultured cells and arrested mouse oocytes at meiosis I (38.7%). CONCLUSION Two TUBB8 mutations (p.A54V and p.R320H) were identified and their pathogeny was confirmed by in-vitro functional assays.
Collapse
Affiliation(s)
- Tianqi Cao
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China; Key Laboratory of Reproductive Medicine of Guangdong Province, the First Affiliated Hospital and School of Life Sciences, Sun Yat-sen University, Guangzhou 510275
| | - Jing Guo
- Key Laboratory of Reproductive Medicine of Guangdong Province, the First Affiliated Hospital and School of Life Sciences, Sun Yat-sen University, Guangzhou 510275
| | - Yan Xu
- Key Laboratory of Reproductive Medicine of Guangdong Province, the First Affiliated Hospital and School of Life Sciences, Sun Yat-sen University, Guangzhou 510275
| | - Xiufeng Lin
- Boai Hospital of Zhongshan, Zhongshan Guangdong, China
| | - Weifen Deng
- Shenzhen Entry and Exit Border Inspection Station Hospital, Shenzhen Guangdong, China
| | - Lizi Cheng
- Boai Hospital of Zhongshan, Zhongshan Guangdong, China
| | - Huan Zhao
- Shenzhen Entry and Exit Border Inspection Station Hospital, Shenzhen Guangdong, China
| | - Shan Jiang
- Boai Hospital of Zhongshan, Zhongshan Guangdong, China
| | - Min Gao
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China; Key Laboratory of Reproductive Medicine of Guangdong Province, the First Affiliated Hospital and School of Life Sciences, Sun Yat-sen University, Guangzhou 510275
| | - Junjiu Huang
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China; Key Laboratory of Reproductive Medicine of Guangdong Province, the First Affiliated Hospital and School of Life Sciences, Sun Yat-sen University, Guangzhou 510275.
| | - Yanwen Xu
- Key Laboratory of Reproductive Medicine of Guangdong Province, the First Affiliated Hospital and School of Life Sciences, Sun Yat-sen University, Guangzhou 510275.
| |
Collapse
|
17
|
Lu Q, Zhang X, Cao Q, Wang C, Ding J, Zhao C, Zhang J, Ling X, Meng Q, Huo R, Li H. Expanding the Genetic and Phenotypic Spectrum of Female Infertility Caused by TUBB8 Mutations. Reprod Sci 2021; 28:3448-3457. [PMID: 34494234 DOI: 10.1007/s43032-021-00694-0] [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: 02/02/2021] [Accepted: 07/04/2021] [Indexed: 11/25/2022]
Abstract
Tubulin beta eight class VIII (TUBB8) is a subtype of β-tubulin that only exists in primates. TUBB8 mutations have been reported to cause arrest of oocyte maturation and embryonic development. We aim to further investigate the mutational spectrum of TUBB8 and its relevance with female infertility. In our study, infertile patients were recruited, and their basal and clinical characteristics were analyzed. Genomic DNA was extracted from peripheral blood donated by patients. Candidate variants were identified by whole-exome sequencing, selected by relevant criteria, and validated by Sanger sequencing. We found five heterozygous variants: c.C208A(p.P70T), c.T907C(p.C303R), c.G173A(p.R58K), c.G326T(p.G109V), and c.C916T(p.R306C) in TUBB8 among six infertile patients characterized by abnormal phenotypes in oocyte maturation, fertilization, or embryo development. Most of oocytes retrieved from affected individuals were arrested at GV (germinal vesicle) stage and early embryos were arrested at variable stages. In vitro experiments were performed, and the relationship between variant c.G173A(p.R58K), c.C208A(p.P70T), and infertility phenotype was confirmed. We also discussed the possibility about patient II-1 from family 4 is affected by germinal/germline mosaicism. These results expand the kinds of variants and phenotypic spectrum of TUBB8 variants with regard to female infertility.
Collapse
Affiliation(s)
- Qianneng Lu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Nanjing, China
| | - Xiaolan Zhang
- Department of Reproductive Medicine, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China
| | - Qiqi Cao
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Nanjing, China
| | - Congjing Wang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Nanjing, China
| | - Jie Ding
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Nanjing, China.,Reproductive Genetic Center, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou, China
| | - Chun Zhao
- Department of Reproductive Medicine, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China
| | - Junqiang Zhang
- Department of Reproductive Medicine, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China
| | - Xiufeng Ling
- Department of Reproductive Medicine, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China
| | - Qingxia Meng
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Nanjing, China. .,Reproductive Genetic Center, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou, China.
| | - Ran Huo
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Nanjing, China. .,Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China.
| | - Hong Li
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Nanjing, China.,Reproductive Genetic Center, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou, China
| |
Collapse
|
18
|
Singhal P, Pendkur G, Parihar RS, Singh S, Chakrabarty BK, Raghavendra SK. The Spectrum of Chromosomal Abnormalities and Endocrine Profile of Male Infertility with Nonobstructive Semen Abnormality: A Case-Control Study. J Hum Reprod Sci 2021; 14:175-183. [PMID: 34316234 PMCID: PMC8279061 DOI: 10.4103/jhrs.jhrs_165_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 05/06/2021] [Accepted: 05/15/2021] [Indexed: 11/26/2022] Open
Abstract
Background: Primary infertility is a common occurrence which affects approximately 15% of couples who desire to begin their family. Chromosomal abnormalities are well-established causes of pregnancy loss but may also have a role in explaining the cause of male infertility, especially with nonobstructive semen abnormalities. Hence, awareness regarding safety of artificial reproductive technology in these individuals due to underlying sperm aneuploidy is required. Aims: The aims of the study are to determine the prevalence of chromosomal abnormalities in primary infertile males with nonobstructive semen abnormalities and correlate with their endocrine profile. Study Design: A case–control study, in which 100 males with primary infertility and non-obstructive semen abnormalities were evaluated for chromosomal abnormality and hormonal profile; and were compared with 50 healthy males with normal semen analysis and at least one biological child. Materials and Methods: Blood T-lymphocytes were cultured using RPMI-1640 medium for obtaining metaphases and chromosomal analysis. Statistical Analysis: SPSS software and Student's t-test were used. A p < 0.05 was considered statistically significant. Results: Azoospermia (81%) was the most common nonobstructive semen abnormality. Overall prevalence of major chromosomal abnormalities and polymorphic variants was 16% and 7%, respectively. Klinefelter syndrome was the most common sex chromosomal numerical abnormality seen in 6.17% of cases with azoospermia. All healthy control males had 46, XY karyotype. Higher levels of follicle-stimulating hormone and luteinizing hormone and lower levels of testosterone along with testicular volumes were observed in infertile males with abnormal karyotype (p < 0.05). Conclusion: Primary infertile males with nonobstructive semen abnormality have high frequency of chromosomal aberrations, which justify the requirement of cytogenetic testing in these patients.
Collapse
Affiliation(s)
- Paresh Singhal
- Department of Pathology, Armed Forces Medical College, Pune, Maharashtra, India
| | - Ganesh Pendkur
- Department of Pathology, Armed Forces Medical College, Pune, Maharashtra, India
| | | | - Sharanjit Singh
- Department of Pathology, Armed Forces Medical College, Pune, Maharashtra, India
| | | | - S K Raghavendra
- Department of Community Medicine, Adichunchanagiri Institute of Medical Sciences, Nagara, Karnataka, India
| |
Collapse
|
19
|
Liu Z, Xi Q, Zhu L, Yang X, Jin L, Wang J, Zhang T, Zhou X, Zhang D, Peng X, Luo Y, Li Z, Zhang X. TUBB8 Mutations Cause Female Infertility with Large Polar Body Oocyte and Fertilization Failure. Reprod Sci 2021; 28:2942-2950. [PMID: 34160777 DOI: 10.1007/s43032-021-00633-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 05/19/2021] [Indexed: 12/18/2022]
Abstract
Tubulin beta 8 class VIII (TUBB8) is a special β-tubulin isotype that mainly expressed in primate oocytes and early embryos and identified as the disease-causing gene of human oocyte maturation arrest. To identify the disease-causing genes in 2 patients with female infertility due to large polar body oocyte or fertilization failure, whole-exome sequencing was performed on the patients and available family members. We identified a novel heterozygous missense mutation c.817C>G (p.L273V) and a recently reported heterozygous missense mutation c.608A>G (p.D203G) in TUBB8 from two patients, respectively. We found oocyte with a large polar body in the patient who carried the p.D203G mutation in TUBB8. Bioinformatics analysis showed that these two mutations are harmful. The results of western blot and RT-PCR experiments showed that the D203G mutation caused a significant decrease in the expression of TUBB8, and immunostaining showed that the TUBB8 mutation caused abnormal microtubule morphology. These findings suggest that TUBB8 mutations resulted in oocyte with a large polar body and fertilization failure in patients.
Collapse
Affiliation(s)
- Zhenxing Liu
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China
| | - Qingsong Xi
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Lixia Zhu
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xue Yang
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China
| | - Lei Jin
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jiarui Wang
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China
| | - Tao Zhang
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xiaopei Zhou
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China
| | - Dazhi Zhang
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China
| | - Xuejie Peng
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China
| | - Yalin Luo
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China
| | - Zhou Li
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.
| | - Xianqin Zhang
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China.
| |
Collapse
|
20
|
Two novel mutations in PADI6 and TLE6 genes cause female infertility due to arrest in embryonic development. J Assist Reprod Genet 2021; 38:1551-1559. [PMID: 34036456 PMCID: PMC8266952 DOI: 10.1007/s10815-021-02194-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 04/14/2021] [Indexed: 12/17/2022] Open
Abstract
Purpose This study aims to identify genetic causes of female infertility associated with recurrent failure of assisted reproductive technology (ART) characterized by embryonic developmental arrest. Methods We recruited infertile patients from two consanguineous families from the Reproductive Medicine Center of Guizhou Provincial People’s Hospital. Peripheral blood was collected for genomic DNA extraction. Two affected individuals and their family members were performed with whole-exome sequencing and Sanger validation in order to identify possible causative genes. For further analyzing the effect of splicing mutation on mRNA integrity in vivo, TLE6 cDNA from the peripheral blood lymphocyte of the affected individual was sequenced. In addition, the possible impact of the pathogenic mutation on the structure and function of the protein were also assessed. Results Two novel homozygous mutations in the peptidylarginine deiminase type VI (PADI6) and the transducin-like enhancer of split 6 (TLE6) genes were identified in the two families. One patient carried the frameshift deletion mutation c.831_832del:p.S278Pfs*59 of the PADI6 gene and the other patient carried the splicing mutation c.1245-2 A>G of the TLE6 gene. The analysis of the mRNA from the proband’s peripheral blood leukocytes confirmed aberrant splicing. Conclusions Our findings expand the mutational spectrum of PADI6 and TLE6 associated with embryonic developmental arrest and deepen our understanding of the genetic causes of infertility with recurrent ART failure.
Collapse
|
21
|
Wang Y, Xiang M, Yu Z, Hao Y, Xu Q, Kong S, Wang F, Shi X, Song G, Cao Y, Huang L, Zhu F. A homozygous missense mutation in TBPL2 is associated with oocyte maturation arrest and degeneration. Clin Genet 2021; 100:324-328. [PMID: 33966269 DOI: 10.1111/cge.13993] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 04/19/2021] [Accepted: 05/04/2021] [Indexed: 11/26/2022]
Abstract
The genetic causes in most of patients with oocyte maturation arrest remain largely unknown. In this study, we identified a homozygous missense mutation (c.895T>C; p.C299R) in TBPL2 (TATA box binding protein like 2) in two infertile sisters with oocyte maturation arrest and degeneration from a consanguineous family by whole-exome sequencing. The TBPL2 mutation is rare and pathogenic, and impaired the transcription initiation function of the protein. Our results showed that TBPL2 mutation might be associated with female infertility due to oocyte maturation arrest and degeneration.
Collapse
Affiliation(s)
- Yu Wang
- 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 (Anhui Medical University), Ministry of Education of the People's Republic of China, Hefei, Anhui, China
| | - Mingfei Xiang
- 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 (Anhui Medical University), Ministry of Education of the People's Republic of China, Hefei, Anhui, China
| | - Zhaojuan Yu
- 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 (Anhui Medical University), Ministry of Education of the People's Republic of China, Hefei, Anhui, China
| | - Yan Hao
- 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 (Anhui Medical University), Ministry of Education of the People's Republic of China, Hefei, Anhui, China
| | - Qianhua Xu
- 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 (Anhui Medical University), Ministry of Education of the People's Republic of China, Hefei, Anhui, China
| | - Shuai Kong
- School of Life Science, Anhui Medical University, Hefei, China
| | - Fengsong Wang
- School of Life Science, Anhui Medical University, Hefei, China
| | - Xuanming Shi
- Department of Biochemistry and Molecular Biology, Anhui Medical University, Hefei, Anhui, China
| | - Gaojie Song
- Shanghai Key Laboratory of Regulatory, Institute of Biomedical Sciences and School of Life Sciences, East China Normal 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 (Anhui Medical University), Ministry of Education of the People's Republic of China, Hefei, Anhui, China
| | - Lingli Huang
- Center for Reproductive Medicine, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Fuxi Zhu
- 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 (Anhui Medical University), Ministry of Education of the People's Republic of China, Hefei, Anhui, China
| |
Collapse
|
22
|
Zheng W, Hu H, Zhang S, Xu X, Gao Y, Gong F, Lu G, Lin G. The comprehensive variant and phenotypic spectrum of TUBB8 in female infertility. J Assist Reprod Genet 2021; 38:2261-2272. [PMID: 33970371 DOI: 10.1007/s10815-021-02219-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 05/02/2021] [Indexed: 12/13/2022] Open
Abstract
PURPOSE TUBB8 is a gene that is frequently analysed in the genetic diagnosis of female infertility; 102 variants of this gene have been identified. However, the evaluation of its pathogenicity and the resulting phenotypes vary. Here, we aimed to identify novel TUBB8 variants as well as to summarize the reported variants and phenotypes in order for them to be included in genetic counselling analyses. METHODS We performed whole exome sequencing to screen for candidate variants in 100 infertile female subjects and 100 controls who were able to conceive naturally. All variants were confirmed by Sanger sequencing. The effects of the variants in oocytes/arrested embryos were assessed by morphological observations, polar body biopsies, and chromosome analysis. A molecular modelling analysis was used to evaluate the possible effects of variants on protein secondary structure. RESULTS We identified 29 TUBB8 variants, of which 20 were novel and five were maternally inherited. We identified three of a total of six recurrent variants that were specific for complete cleavage failure. Moreover, we obtained evidence that TUBB8 variants with large polar bodies had chromosome segregation errors. CONCLUSIONS Our study expands the spectrum of TUBB8 variants, particularly for embryonic arrest. Together with the extant knowledge of TUBB8 variants, this study provides a foundation for the genetic counselling of female infertility.
Collapse
Affiliation(s)
- Wei Zheng
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, 410008, China
| | - Huiling Hu
- Laboratory of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, Central South University, Changsha, 410008, China
| | - Shuoping Zhang
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, 410008, China
| | - Xilin Xu
- Laboratory of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, Central South University, Changsha, 410008, China
| | - Yong Gao
- Wuhan BGI Clinical Laboratory Co., Ltd., Wuhan, 430075, China
| | - Fei Gong
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, 410008, China.,Laboratory of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, Central South University, Changsha, 410008, China
| | - Guangxiu Lu
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, 410008, China.,Laboratory of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, Central South University, Changsha, 410008, China
| | - Ge Lin
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, 410008, China. .,Laboratory of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, Central South University, Changsha, 410008, China.
| |
Collapse
|
23
|
Sang Q, Zhou Z, Mu J, Wang L. Genetic factors as potential molecular markers of human oocyte and embryo quality. J Assist Reprod Genet 2021; 38:993-1002. [PMID: 33895934 PMCID: PMC8190202 DOI: 10.1007/s10815-021-02196-z] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 04/15/2021] [Indexed: 11/24/2022] Open
Abstract
Successful human reproduction requires gamete maturation, fertilization, and early embryonic development. Human oocyte maturation includes nuclear and cytoplasmic maturation, and abnormalities in the process will lead to infertility and recurrent failure of IVF/ICSI attempts. In addition, the quality of oocytes/embryos in the clinic can only be determined by morphological markers, and there is currently a lack of molecular markers for determining oocyte quality. As the number of patients undergoing IVF/ICSI has increased, many patients have been identified with recurrent IVF/ICSI failure. However, the genetic basis behind this phenotype remains largely unknown. In recent years, a few mutant genes have been identified by us and others, which provide potential molecular markers for determining the quality of oocytes/embryos. In this review, we outline the genetic determinants of abnormalities in the processes of oocyte maturation, fertilization, and early embryonic development. Currently, 16 genes (PATL2, TUBB8, TRIP13, ZP1, ZP2, ZP3, PANX1, TLE6, WEE2, CDC20, BTG4, PADI6, NLRP2, NLRP5, KHDC3L, and REC114) have been reported to be the causes of oocyte maturation arrest, fertilization failure, embryonic arrest, and preimplantation embryonic lethality. These abnormalities mainly have Mendelian inheritance patterns, including both dominant inheritance and recessive inheritance, although in some cases de novo mutations have also appeared. In this review, we will introduce the effects of each gene in the specific processes of human early reproduction and will summarize all known variants in these genes and their corresponding phenotypes. Variants in some genes have specific effects on certain steps in the early human reproductive processes, while other variants result in a spectrum of phenotypes. These variants and genetic markers will lay the foundation for individualized genetic counseling and potential treatments for patients and will be the target for precision treatments in reproductive medicine.
Collapse
Affiliation(s)
- Qing Sang
- Institute of Pediatrics, Children's Hospital of Fudan University, the Institutes of Biomedical Sciences, and the State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, 200032, China.
| | - Zhou Zhou
- Institute of Pediatrics, Children's Hospital of Fudan University, the Institutes of Biomedical Sciences, and the State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, 200032, China
| | - Jian Mu
- Institute of Pediatrics, Children's Hospital of Fudan University, the Institutes of Biomedical Sciences, and the State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, 200032, China
| | - Lei Wang
- Institute of Pediatrics, Children's Hospital of Fudan University, the Institutes of Biomedical Sciences, and the State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, 200032, China.
| |
Collapse
|
24
|
Novel Mutations in CDC20 Are Associated with Female Infertility Due to Oocyte Maturation Abnormality and Early Embryonic Arrest. Reprod Sci 2021; 28:1930-1938. [PMID: 33683667 DOI: 10.1007/s43032-021-00524-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 03/01/2021] [Indexed: 10/22/2022]
Abstract
The cell division cycle 20 (CDC20) protein is a co-activator of anaphase-promoting complex/cyclosome (APC/C), required for mitotic exit and also meiotic exit, containing seven WD40 repeats in the C-terminus responsible for protein-protein interactions. Recently, a previous study has shown that biallelic mutations in CDC20 are causative for female infertility with abnormalities in oocyte maturation and embryonic development. This study is to further identify new mutations of CDC20 and the prevalence of variants in our cohort. A cohort of 50 primary infertile females with oocyte maturation abnormality and early embryonic arrest were recruited. Genomic DNA was isolated from peripheral blood samples. Mutation screening of all the coding regions of CDC20 was performed by Sanger sequencing. The pathogenicity of the identified variants on the CDC20 protein was accessed in silico. Two CDC20 variants, a nonsense mutation p.R262* and a missense mutation p.A211T, identified in one female of 50 unrelated affected individuals, accounting for a relative small proportion of this cohort (2%). In silico analysis revealed that the p.R262* would cause no production of protein or a truncated protein lacking five WD40 repeats in the C-terminus; and that p.A211T may interfere with the formation of a deep hydrophobic pocket and thus disturb the binding of CDC20 protein to the substrates of APC/C. This study identified two novel mutations in CDC20, further expanding the mutation spectrum of this gene. Our findings further confirm that biallelic mutations in CDC20 occur in a proportion of infertile females with oocyte maturation abnormality and early embryonic arrest.
Collapse
|
25
|
Cao Q, Zhao C, Wang C, Cai L, Xia M, Zhang X, Han J, Xu Y, Zhang J, Ling X, Ma X, Huo R. The Recurrent Mutation in PATL2 Inhibits Its Degradation Thus Causing Female Infertility Characterized by Oocyte Maturation Defect Through Regulation of the Mos-MAPK Pathway. Front Cell Dev Biol 2021; 9:628649. [PMID: 33614659 PMCID: PMC7890943 DOI: 10.3389/fcell.2021.628649] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 01/12/2021] [Indexed: 02/02/2023] Open
Abstract
PAT1 homolog 2 (PATL2), encoding an RNA-binding protein, is a repressor involved in the translational regulation of maternal mRNAs during oocyte maturation. Previous studies have reported mutations in PATL2 those led to female infertility with oocyte maturation arrest; however, the mechanisms by which mutations affected meiotic maturation remained unclear. Here, we identified several novel and recurrent mutations of PATL2 in patients with similar phenotype, and chose the missense mutation c.649 T>A p.Tyr217Asn in PATL2 (PATL2Y217N) as a typical to investigate the underlying mechanisms. We confirmed that this mutation disturbed oocyte maturation and observed morphological defects of large polar body, symmetrical division and abnormal spindle after microinjection of corresponding mutated mRNA. We further evaluated the effect of the PATL2Y217N mutation in 293T cells, and found this mutation decreased the ubiquitination level and degradation of PATL2. Then, abnormally increased PATL2 bound mRNAs of Mos, an upstream activator of mitogen activated protein kinase (MAPK), to regulate its translational activity and subsequently impaired MAPK signaling pathway and oocyte meiosis. These results dissented from the previous view that PATL2 mutations reduced their expression and highlight the role of PATL2 in translational regulation of Mos and its association with MAPK signaling pathway during oocyte meiotic maturation.
Collapse
Affiliation(s)
- Qiqi Cao
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Nanjing, China
| | - Chun Zhao
- Department of Reproductive Medicine, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China
| | - Congjing Wang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Nanjing, China
| | - Lingbo Cai
- Clinical Center of Reproductive Medicine, State Key Laboratory of Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Meng Xia
- Clinical Center of Reproductive Medicine, State Key Laboratory of Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Xiaolan Zhang
- Department of Reproductive Medicine, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China
| | - Jian Han
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Nanjing, China
| | - Yangyang Xu
- Clinical Center of Reproductive Medicine, State Key Laboratory of Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Junqiang Zhang
- Department of Reproductive Medicine, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China
| | - Xiufeng Ling
- Department of Reproductive Medicine, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China
| | - Xiang Ma
- Clinical Center of Reproductive Medicine, State Key Laboratory of Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Ran Huo
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Nanjing, China.,Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China
| |
Collapse
|
26
|
Hatirnaz S, Başbuğ A, Hatirnaz E, Tannus S, Hatirnaz K, Bakay K, Dahan MH. Can in vitro maturation overcome cycles with repeated oocyte maturation arrest? A classification system for maturation arrest and a cohort study. Int J Gynaecol Obstet 2020; 153:496-502. [PMID: 33216990 DOI: 10.1002/ijgo.13490] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 09/16/2020] [Accepted: 11/18/2020] [Indexed: 11/06/2022]
Abstract
OBJECTIVE To investigate the role of gonadotropin-stimulated and human chorionic gonadotropin (hCG) -primed in vitro oocyte maturation (IVM) in cases of repeated in vitro fertilization (IVF) failure due to various forms of oocyte maturation arrest (OMA). METHODS Retrospective cohort study. RESULTS In all, 63 women with IVF failure due to OMA were evaluated in this study. According to the Hatirnaz & Dahan classification, 11 (17.5%) women were OMA type 1, 22 (34.9%) were OMA type 2, 0 were OMA type 3, 11 (17.5%) were OMA type 4, and 19 women were OMA type 5 (30.1%). Fewer oocytes were retrieved in the IVM than in the IVF cycles. No embryos were produced from oocytes collected in the IVM cycles of women with OMA types 1, 2, and 4. In the OMA type 5 group, 9 (47.4%) day 2 embryos and 6 (31.6%) day 3 embryos were obtained. The difference between the groups was statistically significant (P = 0.001, P = 0.002, respectively). Single day 3 embryo transfer was performed for the six patients with OMA type 5 but no clinical pregnancies occurred. CONCLUSIONS Follicle-stimulating hormone-stimulated and hCG-primed IVM does not improve oocyte maturation, developmental potential, or pregnancy rates of women with OMA. Future studies directed to re-establishing normal cytoskeletal architecture and machinery, and resumption of meiosis may be beneficial for obtaining mature oocytes.
Collapse
Affiliation(s)
- Safak Hatirnaz
- IVF-IVM Center, Medicana International Hospital, Samsun, Turkey
| | - Alper Başbuğ
- Department of Obstetrics & Gynecology, School of Medicine, Düzce University, Düzce, Turkey
| | - Ebru Hatirnaz
- IVF-IVM Center, Medicana International Hospital, Samsun, Turkey
| | - Samer Tannus
- Department of Obstetrics & Gynecology, Galilee Medical Center affiliated to Bar-Ilan University, Naharia, Israel
| | - Kaan Hatirnaz
- Department of Molecular Biology, Faculty of Science, Ondokuzmayıs University, Samsun, Turkey
| | - Kadir Bakay
- Department of Obstetrics & Gynecology, School of Medicine, Ondokuzmayıs University, Samsun, Turkey
| | - Michael H Dahan
- Department of obstetrics gynecology, McGill University, Montreal, Canada
| |
Collapse
|
27
|
Capalbo A, Poli M, Riera-Escamilla A, Shukla V, Kudo Høffding M, Krausz C, Hoffmann ER, Simon C. Preconception genome medicine: current state and future perspectives to improve infertility diagnosis and reproductive and health outcomes based on individual genomic data. Hum Reprod Update 2020; 27:254-279. [PMID: 33197264 DOI: 10.1093/humupd/dmaa044] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 08/13/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Our genetic code is now readable, writable and hackable. The recent escalation of genome-wide sequencing (GS) applications in population diagnostics will not only enable the assessment of risks of transmitting well-defined monogenic disorders at preconceptional stages (i.e. carrier screening), but also facilitate identification of multifactorial genetic predispositions to sub-lethal pathologies, including those affecting reproductive fitness. Through GS, the acquisition and curation of reproductive-related findings will warrant the expansion of genetic assessment to new areas of genomic prediction of reproductive phenotypes, pharmacogenomics and molecular embryology, further boosting our knowledge and therapeutic tools for treating infertility and improving women's health. OBJECTIVE AND RATIONALE In this article, we review current knowledge and potential development of preconception genome analysis aimed at detecting reproductive and individual health risks (recessive genetic disease and medically actionable secondary findings) as well as anticipating specific reproductive outcomes, particularly in the context of IVF. The extension of reproductive genetic risk assessment to the general population and IVF couples will lead to the identification of couples who carry recessive mutations, as well as sub-lethal conditions prior to conception. This approach will provide increased reproductive autonomy to couples, particularly in those cases where preimplantation genetic testing is an available option to avoid the transmission of undesirable conditions. In addition, GS on prospective infertility patients will enable genome-wide association studies specific for infertility phenotypes such as predisposition to premature ovarian failure, increased risk of aneuploidies, complete oocyte immaturity or blastocyst development failure, thus empowering the development of true reproductive precision medicine. SEARCH METHODS Searches of the literature on PubMed Central included combinations of the following MeSH terms: human, genetics, genomics, variants, male, female, fertility, next generation sequencing, genome exome sequencing, expanded carrier screening, secondary findings, pharmacogenomics, controlled ovarian stimulation, preconception, genetics, genome-wide association studies, GWAS. OUTCOMES Through PubMed Central queries, we identified a total of 1409 articles. The full list of articles was assessed for date of publication, limiting the search to studies published within the last 15 years (2004 onwards due to escalating research output of next-generation sequencing studies from that date). The remaining articles' titles were assessed for pertinence to the topic, leaving a total of 644 articles. The use of preconception GS has the potential to identify inheritable genetic conditions concealed in the genome of around 4% of couples looking to conceive. Genomic information during reproductive age will also be useful to anticipate late-onset medically actionable conditions with strong genetic background in around 2-4% of all individuals. Genetic variants correlated with differential response to pharmaceutical treatment in IVF, and clear genotype-phenotype associations are found for aberrant sperm types, oocyte maturation, fertilization or pre- and post-implantation embryonic development. All currently known capabilities of GS at the preconception stage are reviewed along with persisting and forthcoming barriers for the implementation of precise reproductive medicine. WIDER IMPLICATIONS The expansion of sequencing analysis to additional monogenic and polygenic traits may enable the development of cost-effective preconception tests capable of identifying underlying genetic causes of infertility, which have been defined as 'unexplained' until now, thus leading to the development of a true personalized genomic medicine framework in reproductive health.
Collapse
Affiliation(s)
- Antonio Capalbo
- Igenomix Italy, Marostica, Italy.,Igenomix Foundation, INCLIVA, Valencia, Spain
| | | | - Antoni Riera-Escamilla
- Andrology Department, Fundació Puigvert, Universitat Autònoma de Barcelona, Instituto de Investigaciones Biomédicas Sant Pau (IIB-Sant Pau), Barcelona, Spain
| | - Vallari Shukla
- Department of Cellular and Molecular Medicine, DRNF Center for Chromosome Stability, University of Copenhagen, Copenhagen, Denmark
| | - Miya Kudo Høffding
- Department of Cellular and Molecular Medicine, DRNF Center for Chromosome Stability, University of Copenhagen, Copenhagen, Denmark
| | - Csilla Krausz
- Andrology Department, Fundació Puigvert, Universitat Autònoma de Barcelona, Instituto de Investigaciones Biomédicas Sant Pau (IIB-Sant Pau), Barcelona, Spain.,Department of Experimental and Clinical Biomedical Sciences "Mario Serio", Centre of Excellence DeNothe, University of Florence, Florence, Italy
| | - Eva R Hoffmann
- Department of Cellular and Molecular Medicine, DRNF Center for Chromosome Stability, University of Copenhagen, Copenhagen, Denmark
| | - Carlos Simon
- Igenomix Foundation, INCLIVA, Valencia, Spain.,Department of Obstetrics and Gynecology, University of Valencia, Valencia, Spain.,Department of Obstetrics and Gynecology BIDMC, Harvard University, Cambridge, MA, USA
| |
Collapse
|
28
|
Yu B, Doni Jayavelu N, Battle SL, Mar JC, Schimmel T, Cohen J, Hawkins RD. Single-cell analysis of transcriptome and DNA methylome in human oocyte maturation. PLoS One 2020; 15:e0241698. [PMID: 33152014 PMCID: PMC7643955 DOI: 10.1371/journal.pone.0241698] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 10/20/2020] [Indexed: 12/20/2022] Open
Abstract
Oocyte maturation is a coordinated process that is tightly linked to reproductive potential. A better understanding of gene regulation during human oocyte maturation will not only answer an important question in biology, but also facilitate the development of in vitro maturation technology as a fertility treatment. We generated single-cell transcriptome and used our previously published single-cell methylome data from human oocytes at different maturation stages to investigate how genes are regulated during oocyte maturation, focusing on the potential regulatory role of non-CpG methylation. DNMT3B, a gene encoding a key non-CpG methylation enzyme, is one of the 1,077 genes upregulated in mature oocytes, which may be at least partially responsible for the increased non-CpG methylation as oocytes mature. Non-CpG differentially methylated regions (DMRs) between mature and immature oocytes have multiple binding motifs for transcription factors, some of which bind with DNMT3B and may be important regulators of oocyte maturation through non-CpG methylation. Over 98% of non-CpG DMRs locate in transposable elements, and these DMRs are correlated with expression changes of the nearby genes. Taken together, this data indicates that global non-CpG hypermethylation during oocyte maturation may play an active role in gene expression regulation, potentially through the interaction with transcription factors.
Collapse
Affiliation(s)
- Bo Yu
- Department of OBGYN, University of Washington School of Medicine, Seattle, Washington, United States of America
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, Washington, United States of America
| | - Naresh Doni Jayavelu
- Departments of Medicine and Genome Sciences, University of Washington, School of Medicine, Seattle, Washington, United States of America
| | - Stephanie L. Battle
- Department of OBGYN, University of Washington School of Medicine, Seattle, Washington, United States of America
- Departments of Medicine and Genome Sciences, University of Washington, School of Medicine, Seattle, Washington, United States of America
| | - Jessica C. Mar
- Department of Systems and Computational Biology, Albert Einstein College of Medicine, Bronx, New York, United States of America
| | - Timothy Schimmel
- Reprogenetics LLC, Livingston, New Jersey, United States of America
| | - Jacques Cohen
- Reprogenetics LLC, Livingston, New Jersey, United States of America
| | - R. David Hawkins
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, Washington, United States of America
- Departments of Medicine and Genome Sciences, University of Washington, School of Medicine, Seattle, Washington, United States of America
| |
Collapse
|
29
|
Jia Y, Li K, Zheng C, Tang Y, Bai D, Yin J, Chi F, Zhang Y, Li Y, Tu Z, Wang Y, Pan J, Liang S, Guo Y, Ruan J, Kong P, Wu B, Hu Y, Wang H, Liu W, Teng X, Gao S. Identification and rescue of a novel TUBB8 mutation that causes the first mitotic division defects and infertility. J Assist Reprod Genet 2020; 37:2713-2722. [PMID: 32949002 PMCID: PMC7642063 DOI: 10.1007/s10815-020-01945-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 09/08/2020] [Indexed: 02/06/2023] Open
Abstract
PURPOSE Tubulin beta eight class VIII (TUBB8) is essential for oogenesis, fertilization, and pre-implantation embryo development in human. Although TUBB8 mutations were recently discovered in meiosis-arrested oocytes of infertile females, there is no effective therapy for this gene mutation caused infertility. Our study aims to further reveal the infertility-causing gene mutations in the patient's family and to explore whether the infertility could be rescued by optimizing the conditions of embryo culture and finally achieve the purpose of making the patient pregnant. METHODS Whole-exome sequence analysis and Sanger sequencing were performed on patients' family members to screen and identify candidate mutant genes. Construction of plasmids, in vitro transcription, microinjection of disease-causing gene cRNA, and immunofluorescence staining were used to recapitulate the infertility phenotype observed in patients and to understand the pathogenic principles. Simultaneously, overexpression of mutant and wild-type cRNA of the candidate gene in mouse oocytes at either germinal vesicle (GV) or metaphase II (MII) stage was performed in the rescue experiment. RESULTS We first identified a novel heritable TUBB8 mutation (c.1041C>A: p.N347K) in the coding region which specifically affects the first mitosis and causes the developmental arrest of early embryos in a three-generation family. We further demonstrated that TUBB8 mutation could lead to abnormal spindle assemble. And moreover, additional expression of wild-type TUBB8 cRNA in the mouse oocytes in which the mutant TUBB8 were expressed can successfully rescue the developmental defects of resulting embryo and produce full-term offspring. CONCLUSIONS Our study not only defines a novel mutation of TUBB8 causing the early cleavage arrest of embryos, but also provides an important basis for treating such female infertility in the future.
Collapse
Affiliation(s)
- Yanping Jia
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Kunming Li
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Caihong Zheng
- Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yuanyuan Tang
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
- The People's Hospital of Rizhao City in Shandong Province, Rizhao, 276800, China
| | - Dandan Bai
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Jiqing Yin
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Fengli Chi
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Yalin Zhang
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Yanhe Li
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Zhifen Tu
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Yu Wang
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Jiaping Pan
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Shanshan Liang
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Yi Guo
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Jingling Ruan
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Pengcheng Kong
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Bi Wu
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Ye Hu
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Hong Wang
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Wenqiang Liu
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China.
| | - Xiaoming Teng
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China.
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China.
| | - Shaorong Gao
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China.
| |
Collapse
|
30
|
Jiao SY, Yang YH, Chen SR. Molecular genetics of infertility: loss-of-function mutations in humans and corresponding knockout/mutated mice. Hum Reprod Update 2020; 27:154-189. [PMID: 33118031 DOI: 10.1093/humupd/dmaa034] [Citation(s) in RCA: 120] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 07/15/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Infertility is a major issue in human reproductive health, affecting an estimated 15% of couples worldwide. Infertility can result from disorders of sex development (DSD) or from reproductive endocrine disorders (REDs) with onset in infancy, early childhood or adolescence. Male infertility, accounting for roughly half of all infertility cases, generally manifests as decreased sperm count (azoospermia or oligozoospermia), attenuated sperm motility (asthenozoospermia) or a higher proportion of morphologically abnormal sperm (teratozoospermia). Female infertility can be divided into several classical types, including, but not limited to, oocyte maturation arrest, premature ovarian insufficiency (POI), fertilization failure and early embryonic arrest. An estimated one half of infertility cases have a genetic component; however, most genetic causes of human infertility are currently uncharacterized. The advent of high-throughput sequencing technologies has greatly facilitated the identification of infertility-associated gene mutations in patients over the past 20 years. OBJECTIVE AND RATIONALE This review aims to conduct a narrative review of the genetic causes of human infertility. Loss-of-function mutation discoveries related to human infertility are summarized and further illustrated in tables. Corresponding knockout/mutated animal models of causative genes for infertility are also introduced. SEARCH METHODS A search of the PubMed database was performed to identify relevant studies published in English. The term 'mutation' was combined with a range of search terms related to the core focus of the review: infertility, DSD, REDs, azoospermia or oligozoospermia, asthenozoospermia, multiple morphological abnormalities of the sperm flagella (MMAF), primary ciliary dyskinesia (PCD), acephalic spermatozoa syndrome (ASS), globozoospermia, teratozoospermia, acrosome, oocyte maturation arrest, POI, zona pellucida, fertilization defects and early embryonic arrest. OUTCOMES Our search generated ∼2000 records. Overall, 350 articles were included in the final review. For genetic investigation of human infertility, the traditional candidate gene approach is proceeding slowly, whereas high-throughput sequencing technologies in larger cohorts of individuals is identifying an increasing number of causative genes linked to human infertility. This review provides a wide panel of gene mutations in several typical forms of human infertility, including DSD, REDs, male infertility (oligozoospermia, MMAF, PCD, ASS and globozoospermia) and female infertility (oocyte maturation arrest, POI, fertilization failure and early embryonic arrest). The causative genes, their identified mutations, mutation rate, studied population and their corresponding knockout/mutated mice of non-obstructive azoospermia, MMAF, ASS, globozoospermia, oocyte maturation arrest, POI, fertilization failure and early embryonic arrest are further illustrated by tables. In this review, we suggest that (i) our current knowledge of infertility is largely obtained from knockout mouse models; (ii) larger cohorts of clinical cases with distinct clinical characteristics need to be recruited in future studies; (iii) the whole picture of genetic causes of human infertility relies on both the identification of more mutations for distinct types of infertility and the integration of known mutation information; (iv) knockout/mutated animal models are needed to show whether the phenotypes of genetically altered animals are consistent with findings in human infertile patients carrying a deleterious mutation of the homologous gene; and (v) the molecular mechanisms underlying human infertility caused by pathogenic mutations are largely unclear in most current studies. WILDER IMPLICATIONS It is important to use our current understanding to identify avenues and priorities for future research in the field of genetic causes of infertility as well as to apply mutation knowledge to risk prediction, genetic diagnosis and potential treatment for human infertility.
Collapse
Affiliation(s)
- Shi-Ya Jiao
- Education Key Laboratory of Cell Proliferation & Regulation Biology, College of Life Sciences, Beijing Normal University, 100875 Beijing, China
| | - Yi-Hong Yang
- Reproduction Medical Center of West China Second University Hospital, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, 610041 Chengdu, China
| | - Su-Ren Chen
- Education Key Laboratory of Cell Proliferation & Regulation Biology, College of Life Sciences, Beijing Normal University, 100875 Beijing, China
| |
Collapse
|
31
|
Yang P, Yin C, Li M, Ma S, Cao Y, Zhang C, Chen T, Zhao H. Mutation analysis of tubulin beta 8 class VIII in infertile females with oocyte or embryonic defects. Clin Genet 2020; 99:208-214. [PMID: 33009822 DOI: 10.1111/cge.13855] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/11/2020] [Accepted: 09/18/2020] [Indexed: 11/28/2022]
Abstract
Variants of tubulin beta 8 class VIII (TUBB8) have been shown to be associated with female infertility characterized by oocyte or embryonic defects. To further investigate the mutational spectrum of TUBB8 and the prevalence of variants, we performed Sanger sequencing of TUBB8 on a total of 115 infertile females who had undergone repeated in vitro fertilization cycles with oocyte or embryonic defects and 200 healthy controls. A total of 31 variants which were absent from the controls were identified in 36 unrelated individuals, accounting for a large proportion of this cohort (31.3%). All of the variants including heterozygous/homozygous missense variants and a heterozygous frameshift insertion variant were at conserved sites and predicted to be deleterious. Besides, these variants had diverse phenotypic effects, including not only oocyte maturation arrest, fertilization failure, and early embryonic arrest, but also multi-pronuclei (MPN) formation, which is a new phenotype associated with TUBB8 variants. Overall, this study reveals a large number of variants of the TUBB8 gene in infertile females with oocyte or embryonic defects. Our results not only broaden the mutational and phenotypic spectra of TUBB8 variants, but also further confirm the critical role of TUBB8 in oocyte maturation, fertilization, and early embryonic development.
Collapse
Affiliation(s)
- Ping Yang
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Key laboratory of Reproductive Endocrinology of Ministry of Education, Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, China
| | - Changjian Yin
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Key laboratory of Reproductive Endocrinology of Ministry of Education, Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, China
| | - Mei Li
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Key laboratory of Reproductive Endocrinology of Ministry of Education, Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, China
| | - Shuiying Ma
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Key laboratory of Reproductive Endocrinology of Ministry of Education, Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, China
| | - Yongzhi Cao
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Key laboratory of Reproductive Endocrinology of Ministry of Education, Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, China
| | - Changming Zhang
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Key laboratory of Reproductive Endocrinology of Ministry of Education, Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, China
| | - Tailai Chen
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Han Zhao
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Key laboratory of Reproductive Endocrinology of Ministry of Education, Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, China
| |
Collapse
|
32
|
Identification novel mutations in TUBB8 in female infertility and a novel phenotype of large polar body in oocytes with TUBB8 mutations. J Assist Reprod Genet 2020; 37:1837-1847. [PMID: 32524331 DOI: 10.1007/s10815-020-01830-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 05/14/2020] [Indexed: 02/03/2023] Open
Abstract
PURPOSE We aimed to identify novel variants in TUBB8 and corresponding new abnormal phenotypes in oocytes/fertilization/ embryonic development responsible for female infertility. METHODS Sanger sequencing of TUBB8 was performed in infertile women with abnormalities in oocyte maturation or embryonic development. The effects of the variants were evaluated in patients' oocytes by morphological observations and immunofluorescence. RESULTS We identified 34 novel variants of TUBB8 in 51 patients who were diagnosed with abnormalities in oocyte maturation or early embryonic development. We found a novel phenotype in which large polar bodies were present in three independent patients possibly associated with a recurrent variant. Moreover, we identified a novel type of TUBB8 variant consisting of an in-frame deletion-insertion, which has not been previously reported. CONCLUSIONS Our present study identified 34 novel variants in TUBB8 in 51 patients. These patients show oocyte maturation arrest, oocytes with large polar body, fertilization failure, early embryonic arrest or embryonic implantation failure. These results expand the kinds of variants and phenotypic spectrum of TUBB8 variants with regard to female infertility.
Collapse
|
33
|
Amargant F, Barragan M, Vassena R, Vernos I. Insights of the tubulin code in gametes and embryos: from basic research to potential clinical applications in humans†. Biol Reprod 2020; 100:575-589. [PMID: 30247519 DOI: 10.1093/biolre/ioy203] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 07/05/2018] [Accepted: 09/20/2018] [Indexed: 12/14/2022] Open
Abstract
Microtubules are intracellular filaments that define in space and in time a large number of essential cellular functions such as cell division, morphology and motility, intracellular transport and flagella and cilia assembly. They are therefore essential for spermatozoon and oocyte maturation and function, and for embryo development. The dynamic and functional properties of the microtubules are in large part defined by various classes of interacting proteins including MAPs (microtubule associated proteins), microtubule-dependent motors, and severing and modifying enzymes. Multiple mechanisms regulate these interactions. One of them is defined by the high diversity of the microtubules themselves generated by the combination of different tubulin isotypes and by several tubulin post-translational modifications (PTMs). This generates a so-called tubulin code that finely regulates the specific set of proteins that associates with a given microtubule thereby defining the properties and functions of the network. Here we provide an in depth review of the current knowledge on the tubulin isotypes and PTMs in spermatozoa, oocytes, and preimplantation embryos in various model systems and in the human species. We focus on functional implications of the tubulin code for cytoskeletal function, particularly in the field of human reproduction and development, with special emphasis on gamete quality and infertility. Finally, we discuss some of the knowledge gaps and propose future research directions.
Collapse
Affiliation(s)
- Farners Amargant
- Clínica EUGIN, Barcelona, Spain.,Cell and Developmental Biology Programme, Centre for Genomic Regulation (CRG), Barcelona Institute of Science and Technology, Barcelona, Spain
| | | | | | - Isabelle Vernos
- Cell and Developmental Biology Programme, Centre for Genomic Regulation (CRG), Barcelona Institute of Science and Technology, Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,Institució Catalana de Recerca I Estudis Avançats (ICREA), Barcelona, Spain
| |
Collapse
|
34
|
Xing Q, Wang R, Chen B, Li L, Pan H, Li T, Ma X, Cao Y, Wang B. Rare homozygous mutation in TUBB8 associated with oocyte maturation defect-2 in a consanguineous mating family. J Ovarian Res 2020; 13:42. [PMID: 32316999 PMCID: PMC7175565 DOI: 10.1186/s13048-020-00637-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 03/23/2020] [Indexed: 11/10/2022] Open
Abstract
Purpose Variations in many genes may lead to the occurrence of oocyte maturation defects. To investigate the genetic basis of oocyte maturation defects, we performed clinical and genetic analysis of a pedigree. Methods The proband with oocyte maturation defect-2 receiving ovulation induction therapy and her parents were selected for clinical detection, whole exome sequencing and Sanger sequencing. One unrelated healthy woman received ovulation induction therapy as control. Mutations were assessed after frequency screening of public exome databases. Then homozygous variants shared by the proband and her parents were selected. Results Arrest of oocytes maturation was observed. A new missense mutation in TUBB8 (TUBB8: NM_177,987: exon 2: c. C161T: p. A54V) was identified, which was shown to be rare compared with public databases. The variant was highly conserved among primates, and was suggested to be deleterious by online software prediction. Conclusions The homozygote of this variant (TUBB8: NM_ 177,987: exon 2:c.C161T: p.A54V) might affect spindle assembly, cause arrest of oocyte maturation and lead to oocyte maturation defect-2.
Collapse
Affiliation(s)
- Qiong Xing
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Shushan, Hefei, 230022, China.,Anhui Province Key Laboratory of Reproductive Health and Genetics, Biopreservation and Artificial Organs, Hefei, China.,Anhui Provincial Engineering Research Center, Anhui Medical University, Hefei, P.R. China
| | - Ruyi Wang
- Graduate School of Peking Union Medical College, Beijing, China.,Center for Genetics, National Research Institute for Family Planning, 12 Dahuisi Road, Haidian, Beijing, 100081, China
| | - Beili Chen
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Shushan, Hefei, 230022, China.,Anhui Province Key Laboratory of Reproductive Health and Genetics, Biopreservation and Artificial Organs, Hefei, China.,Anhui Provincial Engineering Research Center, Anhui Medical University, Hefei, P.R. China
| | - Lin Li
- Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Yaojiayuan Road 251, Chaoyang, Beijing, 100026, China
| | - Hong Pan
- Graduate School of Peking Union Medical College, Beijing, China.,Center for Genetics, National Research Institute for Family Planning, 12 Dahuisi Road, Haidian, Beijing, 100081, China
| | - Tengyan Li
- Center for Genetics, National Research Institute for Family Planning, 12 Dahuisi Road, Haidian, Beijing, 100081, China
| | - Xu Ma
- Graduate School of Peking Union Medical College, Beijing, China. .,Center for Genetics, National Research Institute for Family Planning, 12 Dahuisi Road, Haidian, Beijing, 100081, China.
| | - Yunxia Cao
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Shushan, Hefei, 230022, China. .,Anhui Province Key Laboratory of Reproductive Health and Genetics, Biopreservation and Artificial Organs, Hefei, China. .,Anhui Provincial Engineering Research Center, Anhui Medical University, Hefei, P.R. China.
| | - Binbin Wang
- Graduate School of Peking Union Medical College, Beijing, China. .,Center for Genetics, National Research Institute for Family Planning, 12 Dahuisi Road, Haidian, Beijing, 100081, China.
| |
Collapse
|
35
|
Okutman Ö, Demirel C, Tülek F, Pfister V, Büyük U, Muller J, Charlet-Berguerand N, Viville S. Homozygous Splice Site Mutation in ZP1 Causes Familial Oocyte Maturation Defect. Genes (Basel) 2020; 11:genes11040382. [PMID: 32244758 PMCID: PMC7231235 DOI: 10.3390/genes11040382] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/24/2020] [Accepted: 03/26/2020] [Indexed: 12/19/2022] Open
Abstract
In vitro fertilization (IVF) involves controlled ovarian hyperstimulation using hormones to produce large numbers of oocytes. The success of IVF is tightly linked to the availability of mature oocytes. In most cases, about 70% to 80% of the oocytes are mature at the time of retrieval, however, in rare instances, all of them may be immature, implying that they were not able to reach the metaphase II (MII) stage. The failure to obtain any mature oocytes, despite a well conducted ovarian stimulation in repeated cycles is a very rare cause of primary female infertility, for which the underlying suspected genetic factors are still largely unknown. In this study, we present the whole exome sequencing analysis of a consanguineous Turkish family comprising three sisters with a recurrent oocyte maturation defect. Analysis of the data reveals a homozygous splice site mutation (c.1775-3C>A) in the zona pellucida glycoprotein 1 (ZP1) gene. Minigene experiments show that the mutation causes the retention of the intron 11 sequence between exon 11 and exon 12, resulting in a frameshift and the likely production of a truncated protein.
Collapse
Affiliation(s)
- Özlem Okutman
- Institut de Parasitologie et Pathologie Tropicale, EA 7292, Fédération de Médecine Translationelle (IPPTS), Université de Strasbourg, 3 rue Koeberlé, 67000 Strasbourg, France;
- Laboratoire de Diagnostic Génétique, UF3472-génétique de l’infertilité, Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France
| | - Cem Demirel
- Memorial Atasehir Hospital, In Vitro Fertilization (IVF) Andrology and Genetics Center, Kucukbakkalkoy mh.Vedat Gunyol cd No:28-30, 34758 Atasehir/Istanbul, Turkey; (C.D.); (F.T.)
| | - Firat Tülek
- Memorial Atasehir Hospital, In Vitro Fertilization (IVF) Andrology and Genetics Center, Kucukbakkalkoy mh.Vedat Gunyol cd No:28-30, 34758 Atasehir/Istanbul, Turkey; (C.D.); (F.T.)
| | - Veronique Pfister
- Médecine Translationnelle et Neurogénétique, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Institut National de Santé et de Recherche Médicale (INSERM), U964/Centre National de Recherche Scientifique (CNRS) UMR 7104, Université de Strasbourg, 67404 Illkirch, France; (V.P.); (N.C.-B.)
| | - Umut Büyük
- Hibrigen Biotechnology R&D Industry and Trade Ltd. Co.,Tubitak MAM Teknoloji Serbest Bolgesi, Baris SB Mh 5002.sk Yeni Tek. Binasi ABlok 4, A/101 Gebze/Kocaeli, Turkey;
| | - Jean Muller
- Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France;
- Laboratoire de Génétique Médicale, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, 67000 Strasbourg, France
| | - Nicolas Charlet-Berguerand
- Médecine Translationnelle et Neurogénétique, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Institut National de Santé et de Recherche Médicale (INSERM), U964/Centre National de Recherche Scientifique (CNRS) UMR 7104, Université de Strasbourg, 67404 Illkirch, France; (V.P.); (N.C.-B.)
| | - Stéphane Viville
- Institut de Parasitologie et Pathologie Tropicale, EA 7292, Fédération de Médecine Translationelle (IPPTS), Université de Strasbourg, 3 rue Koeberlé, 67000 Strasbourg, France;
- Laboratoire de Diagnostic Génétique, UF3472-génétique de l’infertilité, Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France
- Correspondence:
| |
Collapse
|
36
|
Wen L, Liu Q, Xu J, Liu X, Shi C, Yang Z, Zhang Y, Xu H, Liu J, Yang H, Huang H, Qiao J, Tang F, Chen ZJ. Recent advances in mammalian reproductive biology. SCIENCE CHINA. LIFE SCIENCES 2020; 63:18-58. [PMID: 31813094 DOI: 10.1007/s11427-019-1572-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 10/22/2019] [Indexed: 01/05/2023]
Abstract
Reproductive biology is a uniquely important topic since it is about germ cells, which are central for transmitting genetic information from generation to generation. In this review, we discuss recent advances in mammalian germ cell development, including preimplantation development, fetal germ cell development and postnatal development of oocytes and sperm. We also discuss the etiologies of female and male infertility and describe the emerging technologies for studying reproductive biology such as gene editing and single-cell technologies.
Collapse
Affiliation(s)
- Lu Wen
- Beijing Advanced Innovation Center for Genomics, Department of Obstetrics and Gynecology Third Hospital, College of Life Sciences, Peking University, Beijing, 100871, China
| | - Qiang Liu
- Beijing Advanced Innovation Center for Genomics, Department of Obstetrics and Gynecology Third Hospital, College of Life Sciences, Peking University, Beijing, 100871, China
| | - Jingjing Xu
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China
| | - Xixi Liu
- Beijing Advanced Innovation Center for Genomics, Department of Obstetrics and Gynecology Third Hospital, College of Life Sciences, Peking University, Beijing, 100871, China
| | - Chaoyi Shi
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China
| | - Zuwei Yang
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China
| | - Yili Zhang
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China
| | - Hong Xu
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China
| | - Jiang Liu
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Hui Yang
- Institute of Neuroscience, State Key Laboratory of Neuroscience, Key Laboratory of Primate Neurobiology, CAS Center for Excellence in Brain Science and Intelligence Technology, Shanghai Research Center for Brain Science and Brain-Inspired Intelligence, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China.
| | - Hefeng Huang
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China.
| | - Jie Qiao
- Beijing Advanced Innovation Center for Genomics, Department of Obstetrics and Gynecology Third Hospital, College of Life Sciences, Peking University, Beijing, 100871, China.
| | - Fuchou Tang
- Beijing Advanced Innovation Center for Genomics, Department of Obstetrics and Gynecology Third Hospital, College of Life Sciences, Peking University, Beijing, 100871, China.
| | - Zi-Jiang Chen
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Jinan, 250021, China.
| |
Collapse
|
37
|
Singhal P, Malik A, Naredi N, Pranaya G, Agrawal A. The Robertsonian translocation of '21/22' in Nonobstructive Azoospermia: A Rare Case Report from India. J Hum Reprod Sci 2019; 12:255-257. [PMID: 31576085 PMCID: PMC6764225 DOI: 10.4103/jhrs.jhrs_13_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Robertsonian translocation is a subtype of balanced translocation involving two acrocentric chromosomes. Individuals who are carrier of this abnormality are at increased risk of infertility or bad obstetric history. This case is reported with the aim to describe a male who presented with nonobstructive azoospermia at a tertiary care center. The individual was phenotypically normal but carrier of a Robertsonian translocation of two acrocentric chromosomes. With this literature, we emphasize that conventional cytogenetic is an essential diagnostic tool for screening genetic factors in infertility.
Collapse
Affiliation(s)
- Paresh Singhal
- Department of Pathology, Armed Forces Medical College, Pune, Maharashtra, India
| | - Ajay Malik
- Department of Pathology, Armed Forces Medical College, Pune, Maharashtra, India
| | - Nikita Naredi
- Department of ARTC, Command Hospital (SC), Pune, Maharashtra, India
| | - Gurmeet Pranaya
- Department of ARTC, Command Hospital (SC), Pune, Maharashtra, India
| | - Amit Agrawal
- Department of Urology, Command Hospital (SC), Pune, Maharashtra, India
| |
Collapse
|
38
|
Chen B, Wang W, Peng X, Jiang H, Zhang S, Li D, Li B, Fu J, Kuang Y, Sun X, Wang X, Zhang Z, Wu L, Zhou Z, Lyu Q, Yan Z, Mao X, Xu Y, Mu J, Li Q, Jin L, He L, Sang Q, Wang L. The comprehensive mutational and phenotypic spectrum of TUBB8 in female infertility. Eur J Hum Genet 2018; 27:300-307. [PMID: 30297906 DOI: 10.1038/s41431-018-0283-3] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 09/12/2018] [Accepted: 09/18/2018] [Indexed: 02/04/2023] Open
Abstract
Human oocyte maturation is a precondition for fertilization and ensuing embryonic development. Previously, we identified TUBB8 variants as a genetic determinant of human oocyte maturation arrest and showed that these variants cause variable and mixed phenotypes in oocyte maturation and early embryo development. We also estimated that rare inherited or de novo variants in the TUBB8 gene accounted for 30% of individuals in a small cohort of patients affected by oocyte maturation arrest. In the present study, we recruited a further 87 patients from unrelated families diagnosed with oocyte maturation or early embryonic arrest and identified 30 patients carrying TUBB8 variants. The corresponding phenotypes not only include oocyte maturation arrest, failure of fertilization, and early embryonic arrest, but also extend to the new phenotype of failure of embryo implantation. These observations provide the most detailed mutational and phenotypic spectrum of TUBB8, further extend the spectrum of variants and dysfunctional oocyte and embryo phenotypes caused by TUBB8 variants, and confirm previous findings for a critical role of TUBB8 during oocyte maturation and early embryonic development. Thus, TUBB8 mutation screening might not only be a genetic diagnostic marker for patients with oocyte maturation arrest, but might also have clinical implications for evaluating the competence of patients' functional oocytes with first polar body (PB1).
Collapse
Affiliation(s)
- Biaobang Chen
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences and School of Life Sciences, Fudan University, Shanghai, 200032, China
| | - Wenjing Wang
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences and School of Life Sciences, Fudan University, Shanghai, 200032, China
| | - Xiandong Peng
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, 200011, China
| | - Huafeng Jiang
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, 200011, China.,Community Health Service Center, 2nd Shimen Road, Jinan District, Shanghai, China
| | - Shaozhen Zhang
- Reproductive Medicine Center, Shanghai Ninth Hospital, Shanghai Jiao Tong University, Shanghai, 200011, China
| | - Da Li
- Department of Obstetrics and Gynecology, Center of Reproductive Medicine, Shengjing Hospital, China Medical University, Shenyang, 110004, China
| | - Bin Li
- Reproductive Medicine Center, Shanghai Ninth Hospital, Shanghai Jiao Tong University, Shanghai, 200011, China
| | - Jing Fu
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, 200011, China
| | - Yanping Kuang
- Reproductive Medicine Center, Shanghai Ninth Hospital, Shanghai Jiao Tong University, Shanghai, 200011, China
| | - Xiaoxi Sun
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, 200011, China
| | - Xueqian Wang
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences and School of Life Sciences, Fudan University, Shanghai, 200032, China
| | - Zhihua Zhang
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences and School of Life Sciences, Fudan University, Shanghai, 200032, China
| | - Ling Wu
- Reproductive Medicine Center, Shanghai Ninth Hospital, Shanghai Jiao Tong University, Shanghai, 200011, China
| | - Zhou Zhou
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences and School of Life Sciences, Fudan University, Shanghai, 200032, China
| | - Qifeng Lyu
- Reproductive Medicine Center, Shanghai Ninth Hospital, Shanghai Jiao Tong University, Shanghai, 200011, China
| | - Zheng Yan
- Reproductive Medicine Center, Shanghai Ninth Hospital, Shanghai Jiao Tong University, Shanghai, 200011, China
| | - Xiaoyan Mao
- Reproductive Medicine Center, Shanghai Ninth Hospital, Shanghai Jiao Tong University, Shanghai, 200011, China
| | - Yao Xu
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences and School of Life Sciences, Fudan University, Shanghai, 200032, China
| | - Jian Mu
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences and School of Life Sciences, Fudan University, Shanghai, 200032, China
| | - Qiaoli Li
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences and School of Life Sciences, Fudan University, Shanghai, 200032, China
| | - Li Jin
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences and School of Life Sciences, Fudan University, Shanghai, 200032, China
| | - Lin He
- Bio-X Center, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Qing Sang
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences and School of Life Sciences, Fudan University, Shanghai, 200032, China.
| | - Lei Wang
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences and School of Life Sciences, Fudan University, Shanghai, 200032, China. .,Shanghai Center for Women and Children's Health, Shanghai, 200062, China.
| |
Collapse
|
39
|
Wang AC, Zhang YS, Wang BS, Zhao XY, Wu FX, Zhai XH, Sun JX, Mei SY. Mutation analysis of the TUBB8 gene in primary infertile women with arrest in oocyte maturation. Gynecol Endocrinol 2018; 34:900-904. [PMID: 29671363 DOI: 10.1080/09513590.2018.1464138] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Tubulin beta eight class VIII (TUBB8) is a subtype of β-tubulin that only exists in primates. Mutations in the TUBB8 gene have been proven to cause oocyte maturation arrest. The aim of this study was to identify the new types of mutations in TUBB8. Six women (families) with oocyte maturation arrest and 100 healthy controls were recruited. The sequence of the TUBB8 gene was amplified and analyzed by Sanger sequencing, which revealed a de novo heterozygous variant c.292G > A (p.G98R) of TUBB8 in one affected individual. This TUBB8 variant was absent in the 100 fertile females and was predicted to be highly damaging to the function of the TUBB8 protein by SIFT and PolyPhen-2. This novel variant extends the spectrum of TUBB8 mutations and the presence of a TUBB8 mutation is being considered to be indicative of a poor prognosis for the success of assisted reproductive treatment.
Collapse
Affiliation(s)
- An-Cong Wang
- a Department of Reproductive Medicine , Linyi People's Hospital , Linyi , PR China
- b Department of Obstetrics and Gynecology , Linyi People's Hospital , Linyi , PR China
| | - Yu-Song Zhang
- c Department of Imaging , Linyi People's Hospital , Linyi , PR China
| | - Bao-Song Wang
- a Department of Reproductive Medicine , Linyi People's Hospital , Linyi , PR China
- b Department of Obstetrics and Gynecology , Linyi People's Hospital , Linyi , PR China
| | - Xiang-Yu Zhao
- d Department of Medical Genetics , Linyi People's Hospital , Linyi , PR China
| | - Feng-Xia Wu
- e Department of Anatomy, School of Basic Medical Sciences , Shandong University , Jinan , PR China
| | - Xiang-Hong Zhai
- a Department of Reproductive Medicine , Linyi People's Hospital , Linyi , PR China
- b Department of Obstetrics and Gynecology , Linyi People's Hospital , Linyi , PR China
| | - Ju-Xiang Sun
- b Department of Obstetrics and Gynecology , Linyi People's Hospital , Linyi , PR China
| | - Shi-Yue Mei
- f Genetics and Prenatal Diagnosis Center , First Affiliated Hospital of Zhengzhou University , Zhengzhou , PR China
| |
Collapse
|
40
|
Clinical and Functional Characterization of the Recurrent TUBA1A p.(Arg2His) Mutation. Brain Sci 2018; 8:brainsci8080145. [PMID: 30087272 PMCID: PMC6119949 DOI: 10.3390/brainsci8080145] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 07/06/2018] [Accepted: 07/17/2018] [Indexed: 12/25/2022] Open
Abstract
The TUBA1A gene encodes tubulin alpha-1A, a protein that is highly expressed in the fetal brain. Alpha- and beta-tubulin subunits form dimers, which then co-assemble into microtubule polymers: dynamic, scaffold-like structures that perform key functions during neurogenesis, neuronal migration, and cortical organisation. Mutations in TUBA1A have been reported to cause a range of brain malformations. We describe four unrelated patients with the same de novo missense mutation in TUBA1A, c.5G>A, p.(Arg2His), as found by next generation sequencing. Detailed comparison revealed similar brain phenotypes with mild variability. Shared features included developmental delay, microcephaly, hypoplasia of the cerebellar vermis, dysplasia or thinning of the corpus callosum, small pons, and dysmorphic basal ganglia. Two of the patients had bilateral perisylvian polymicrogyria. We examined the effects of the p.(Arg2His) mutation by computer-based protein structure modelling and heterologous expression in HEK-293 cells. The results suggest the mutation subtly impairs microtubule function, potentially by affecting inter-dimer interaction. Based on its sequence context, c.5G>A is likely to be a common recurrent mutation. We propose that the subtle functional effects of p.(Arg2His) may allow for other factors (such as genetic background or environmental conditions) to influence phenotypic outcome, thus explaining the mild variability in clinical manifestations.
Collapse
|
41
|
Xiang J, Wang W, Qian C, Xue J, Wang T, Li H, Li H. Human oocyte maturation arrest caused by a novel missense mutation in TUBB8. J Int Med Res 2018; 46:3759-3764. [PMID: 29877102 PMCID: PMC6135992 DOI: 10.1177/0300060518778638] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Objective To explore the etiology of human oocyte maturation arrest in two infertile
Chinese sisters. Methods Clinical examination and genetic testing of all available family members were
conducted, and the findings were used to create a pedigree. Mutation
screening using PCR amplification and DNA Sanger sequencing of the entire
tubulin beta 8 class VIII gene (TUBB8) including
intron–exon boundaries was performed to identify mutations. Results A novel missense TUBB8 mutation (c.1054G > T, p.A352S) in
the patient and her elder sister was detected and shown to be associated
with oocyte maturation arrest. Conclusion Our findings expand the known mutation spectrum of TUBB8 and
provide insights into the etiology of human oocyte maturation arrest.
Collapse
Affiliation(s)
- Jingjing Xiang
- 1 Center for Reproduction and Genetics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu, China.,2 Center for Reproduction and Genetics, Suzhou Municipal Hospital, Suzhou, Jiangsu, China.,These authors contributed equally to this work
| | - Wei Wang
- 1 Center for Reproduction and Genetics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu, China.,2 Center for Reproduction and Genetics, Suzhou Municipal Hospital, Suzhou, Jiangsu, China.,These authors contributed equally to this work
| | - Chunfeng Qian
- 1 Center for Reproduction and Genetics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu, China.,2 Center for Reproduction and Genetics, Suzhou Municipal Hospital, Suzhou, Jiangsu, China
| | - Jiangyang Xue
- 1 Center for Reproduction and Genetics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu, China.,2 Center for Reproduction and Genetics, Suzhou Municipal Hospital, Suzhou, Jiangsu, China
| | - Ting Wang
- 1 Center for Reproduction and Genetics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu, China.,2 Center for Reproduction and Genetics, Suzhou Municipal Hospital, Suzhou, Jiangsu, China
| | - Haibo Li
- 1 Center for Reproduction and Genetics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu, China.,2 Center for Reproduction and Genetics, Suzhou Municipal Hospital, Suzhou, Jiangsu, China
| | - Hong Li
- 1 Center for Reproduction and Genetics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu, China.,2 Center for Reproduction and Genetics, Suzhou Municipal Hospital, Suzhou, Jiangsu, China.,These authors contributed equally to this work
| |
Collapse
|
42
|
A novel mutation in the TUBB8 gene is associated with complete cleavage failure in fertilized eggs. J Assist Reprod Genet 2018; 35:1349-1356. [PMID: 29704226 DOI: 10.1007/s10815-018-1188-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 04/13/2018] [Indexed: 01/08/2023] Open
Abstract
PURPOSE Cleavage of the zygote during human reproduction is a key event of early embryonic development. The genetic events associated with idiopathic embryonic cleavage failure are not certain. Mutations in the tubulin beta 8 class VIII (TUBB8) gene have been reported to be associated with oocyte maturation, fertilization, and developmental arrest. Here, we aimed to assess the clinical and genetic characteristics of complete cleavage failure in fertilized eggs. METHODS We have characterized a patient with a 9-year history of primary infertility in a non-consanguineous family from China. The patient presented complete cleavage failure in all two-pronuclear (2PN) fertilized oocytes after 2 cycles of in vitro fertilization (IVF). We performed Sanger sequencing of the TUBB8 gene in the patient, and further bioinformatics analysis to identify pathogenesis of gene. RESULTS A novel homozygous mutation, c.322G > A (p.Glu108Lys), was detected, and this change was absent from 179 control subjects. Glutamic acid is highly conserved at this position, and replacement by lysine was predicted to be repelled by the α-tubulin positive region, disrupting the α-β tubulin interaction. CONCLUSIONS Our findings presented a homozygous mutation of TUBB8 associated with complete cleavage failure in fertilized eggs and provided new data for the genotype-phenotype of TUBB8-related diseases.
Collapse
|
43
|
Novel mutations in genes encoding subcortical maternal complex proteins may cause human embryonic developmental arrest. Reprod Biomed Online 2018; 36:698-704. [PMID: 29606347 DOI: 10.1016/j.rbmo.2018.03.009] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 03/09/2018] [Accepted: 03/09/2018] [Indexed: 11/22/2022]
Abstract
Successful human reproduction initiates from normal gamete formation, fertilization and early embryonic development. Abnormalities in any of these steps will lead to infertility. Many infertile patients undergo several failures of IVF and intracytoplasmic sperm injection (ICSI) cycles, and embryonic developmental arrest is a common phenotype in cases of recurrent failure of IVF/ICSI attempts. However, the genetic basis for this phenotype is poorly understood. The subcortical maternal complex (SCMC) genes play important roles during embryonic development, and using whole-exome sequencing novel biallelic mutations in the SCMC genes TLE6, PADI6 and KHDC3L were identified in four patients with embryonic developmental arrest. A mutation in TLE6 was found in a patient with cleaved embryos that arrested on day 3 and failed to form blastocysts. Two patients with embryos that arrested at the cleavage stage had mutations in PADI6, and a mutation in KHDC3L was found in a patient with embryos arrested at the morula stage. No mutations were identified in these genes in an additional 80 patients. These findings provide further evidence for the important roles of TLE6, PADI6 and KHDC3L in embryonic development. This work lays the foundation for the genetic diagnosis of patients with recurrent IVF/ICSI failure.
Collapse
|
44
|
Chen B, Zhang Z, Sun X, Kuang Y, Mao X, Wang X, Yan Z, Li B, Xu Y, Yu M, Fu J, Mu J, Zhou Z, Li Q, Jin L, He L, Sang Q, Wang L. Biallelic Mutations in PATL2 Cause Female Infertility Characterized by Oocyte Maturation Arrest. Am J Hum Genet 2017; 101:609-615. [PMID: 28965849 DOI: 10.1016/j.ajhg.2017.08.018] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 08/28/2017] [Indexed: 01/22/2023] Open
Abstract
Oocyte maturation arrest results in female infertility, but the genetic determinants of human oocyte maturation arrest remain largely unknown. Previously, we identified TUBB8 mutations responsible for human oocyte maturation arrest, indicating the important role of genetic factors in the disorder. However, TUBB8 mutations account for only around 30% of individuals with oocyte maturation arrest; thus, the disorder is likely to involve other genetic factors that are as yet unknown. Here, we initially identified a homozygous nonsense mutation of PATL2 (c.784C>T [p.Arg262∗]) in a consanguineous family with a phenotype characterized by human oocyte germinal vesicle (GV) arrest. Subsequent mutation screening of PATL2 in a cohort of 179 individuals identified four additional independent individuals with compound-heterozygous PATL2 mutations with slight phenotypic variability. A genetic burden test further confirmed the genetic contribution of PATL2 to human oocyte maturation arrest. By western blot in HeLa cells, identification of splicing events in affected individuals' granulosa cells, and immunostaining in affected individuals' oocytes, we provide evidence that mutations in PATL2 lead to decreased amounts of protein. These findings suggest an important role for PATL2 mutations in oocyte maturation arrest and expand our understanding of the genetic basis of female infertility.
Collapse
Affiliation(s)
- Biaobang Chen
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences, School of Life Sciences, Fudan University, Shanghai 200032, China; Guangzhou Medical University and Guangzhou Institutes of Biomedicine and Health Joint School of Life Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Zhihua Zhang
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences, School of Life Sciences, Fudan University, Shanghai 200032, China
| | - Xiaoxi Sun
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - Yanping Kuang
- Reproductive Medicine Center, Shanghai Ninth Hospital, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Xiaoyan Mao
- Reproductive Medicine Center, Shanghai Ninth Hospital, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Xueqian Wang
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences, School of Life Sciences, Fudan University, Shanghai 200032, China
| | - Zheng Yan
- Reproductive Medicine Center, Shanghai Ninth Hospital, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Bin Li
- Reproductive Medicine Center, Shanghai Ninth Hospital, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Yao Xu
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences, School of Life Sciences, Fudan University, Shanghai 200032, China
| | - Min Yu
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - Jing Fu
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - Jian Mu
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences, School of Life Sciences, Fudan University, Shanghai 200032, China
| | - Zhou Zhou
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences, School of Life Sciences, Fudan University, Shanghai 200032, China
| | - Qiaoli Li
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences, School of Life Sciences, Fudan University, Shanghai 200032, China
| | - Li Jin
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences, School of Life Sciences, Fudan University, Shanghai 200032, China
| | - Lin He
- Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Bio-X Center, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200030, China; Lin He's Academician Workstation of New Medicine and Clinical Translation at the Third Affiliated Hospital, Guangzhou Medical University, Guangzhou 510150, China
| | - Qing Sang
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences, School of Life Sciences, Fudan University, Shanghai 200032, China; Guangzhou Medical University and Guangzhou Institutes of Biomedicine and Health Joint School of Life Sciences, Guangzhou Medical University, Guangzhou 511436, China.
| | - Lei Wang
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital, Institutes of Biomedical Sciences, School of Life Sciences, Fudan University, Shanghai 200032, China; Guangzhou Medical University and Guangzhou Institutes of Biomedicine and Health Joint School of Life Sciences, Guangzhou Medical University, Guangzhou 511436, China.
| |
Collapse
|