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Zhang L, Ten Hagen KG. O-Glycosylation of a male seminal fluid protein influences sperm binding and female postmating behavior. PNAS NEXUS 2024; 3:pgae322. [PMID: 39189023 PMCID: PMC11346359 DOI: 10.1093/pnasnexus/pgae322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Accepted: 07/16/2024] [Indexed: 08/28/2024]
Abstract
Glycoproteins are abundant within the human reproductive system and alterations in glycosylation lead to reproductive disorders, suggesting that glycans play an important role in reproductive function. In this study, we used the Drosophila reproductive system as a model to investigate the biological functions of O-glycosylation. We found that O-glycosylation in the male accessory glands, an organ responsible for secreting seminal fluid proteins, plays important roles in female postmating behavior. The loss of one O-glycosyltransferase, PGANT9, in the male reproductive system resulted in decreased egg production in mated females. We identified one substrate of PGANT9, lectin-46Ca (CG1656), which is known to affect female postmating responses. We further show that the loss of lectin-46Ca O-glycosylation affects its ability to associate with sperm tails, resulting in reduced transfer within the female reproductive system. Our results provide the first example that O-glycosylation of a seminal fluid protein affects its ability to associate with sperm in vivo. These studies may shed light on the biological function of O-glycans in mammalian reproduction.
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Affiliation(s)
- Liping Zhang
- Developmental Glycobiology Section, NIDCR, National Institutes of Health, 30 Convent Drive, Bethesda, MD 20892-4370, USA
| | - Kelly G Ten Hagen
- Developmental Glycobiology Section, NIDCR, National Institutes of Health, 30 Convent Drive, Bethesda, MD 20892-4370, USA
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2
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Graziani A, Rocca MS, Vinanzi C, Masi G, Grande G, De Toni L, Ferlin A. Genetic Causes of Qualitative Sperm Defects: A Narrative Review of Clinical Evidence. Genes (Basel) 2024; 15:600. [PMID: 38790229 PMCID: PMC11120687 DOI: 10.3390/genes15050600] [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: 03/28/2024] [Revised: 04/26/2024] [Accepted: 05/01/2024] [Indexed: 05/26/2024] Open
Abstract
Several genes are implicated in spermatogenesis and fertility regulation, and these genes are presently being analysed in clinical practice due to their involvement in male factor infertility (MFI). However, there are still few genetic analyses that are currently recommended for use in clinical practice. In this manuscript, we reviewed the genetic causes of qualitative sperm defects. We distinguished between alterations causing reduced sperm motility (asthenozoospermia) and alterations causing changes in the typical morphology of sperm (teratozoospermia). In detail, the genetic causes of reduced sperm motility may be found in the alteration of genes associated with sperm mitochondrial DNA, mitochondrial proteins, ion transport and channels, and flagellar proteins. On the other hand, the genetic causes of changes in typical sperm morphology are related to conditions with a strong genetic basis, such as macrozoospermia, globozoospermia, and acephalic spermatozoa syndrome. We tried to distinguish alterations approved for routine clinical application from those still unsupported by adequate clinical studies. The most important aspect of the study was related to the correct identification of subjects to be tested and the correct application of genetic tests based on clear clinical data. The correct application of available genetic tests in a scenario where reduced sperm motility and changes in sperm morphology have been observed enables the delivery of a defined diagnosis and plays an important role in clinical decision-making. Finally, clarifying the genetic causes of MFI might, in future, contribute to reducing the proportion of so-called idiopathic MFI, which might indeed be defined as a subtype of MFI whose cause has not yet been revealed.
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Affiliation(s)
- Andrea Graziani
- Department of Medicine, University of Padova, 35128 Padova, Italy; (A.G.); (G.M.); (L.D.T.)
| | - Maria Santa Rocca
- Unit of Andrology and Reproductive Medicine, University Hospital of Padova, 35128 Padova, Italy; (M.S.R.); (C.V.); (G.G.)
| | - Cinzia Vinanzi
- Unit of Andrology and Reproductive Medicine, University Hospital of Padova, 35128 Padova, Italy; (M.S.R.); (C.V.); (G.G.)
| | - Giulia Masi
- Department of Medicine, University of Padova, 35128 Padova, Italy; (A.G.); (G.M.); (L.D.T.)
| | - Giuseppe Grande
- Unit of Andrology and Reproductive Medicine, University Hospital of Padova, 35128 Padova, Italy; (M.S.R.); (C.V.); (G.G.)
| | - Luca De Toni
- Department of Medicine, University of Padova, 35128 Padova, Italy; (A.G.); (G.M.); (L.D.T.)
| | - Alberto Ferlin
- Department of Medicine, University of Padova, 35128 Padova, Italy; (A.G.); (G.M.); (L.D.T.)
- Unit of Andrology and Reproductive Medicine, University Hospital of Padova, 35128 Padova, Italy; (M.S.R.); (C.V.); (G.G.)
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3
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Ibitoye BO, Fasasi AO, Imosemi IO, Alabi O, Olaniyan OT, Ibitoye FO, Faduola P, Bodun DS, Wike NY. The spermiogram and correlation of seminal fluid parameters in patient attending fertility centre in Lagos, South West Nigeria. Morphologie 2023; 107:100606. [PMID: 37385852 DOI: 10.1016/j.morpho.2023.05.004] [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: 03/01/2023] [Revised: 05/03/2023] [Accepted: 05/11/2023] [Indexed: 07/01/2023]
Abstract
BACKGROUND The determinant of the spermiogram of semen varies in different populations based on several factors ranging, from age to the pathological state of an individual to environmental factors. The aim of the study is to determine the spermiogram of patients that attend fertility clinics in southwest Nigeria and the relationship between the parameters. METHODOLOGY This is a cross-sectional study that recruited two hundred and ninety seven (297) patients from two fertility centers in Lagos, Nigeria for the period of January 2021 to November 2022. The sperm samples were collected following WHO standards. The spermiogram was analyzed using an automated sperm analyzer and the descriptive and inference statistics of the study were carried out using R packages (R version 4.2.0). RESULTS The result showed the mean age of 43.12±6.95years with median age of 42years. The mean of sperm count and concentration were 114×106 sperm cells and 42×106 per mL with the mean volume of the semen produced by the patients was 2.69mL and average motility (progressive and non-progressive) of the sperm is 47%±19%, 42%±17% has normal morphology. The distributions of the observed variables (seminal fluid parameters) were different from normal distributions in the studied population, such that almost all of them are skewed to the right. The degree of relationship between the sperm parameter were very weak. Nevertheless, specifically, there is a negative correlation between age and sperm count, age and motility, age and volume, and a positive correlation between age and abnormal morphology. The results showed that sperm morphology has a significant effect on motility while sperm morphology significantly depend on sperm count. CONCLUSION An increase in sperm volume and concentration improves the sperm morphology and boost the sperm motility, this may increasing the chance of fertility.
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Affiliation(s)
- B O Ibitoye
- Department of Anatomy, Ekiti State University, Ado Ekiti, Nigeria
| | - A O Fasasi
- Omega Golden Fertility, Plot 8 Tunde Oyerinde Close, Peninsula Estate Ajiwe Ajah, Lagos, Nigeria
| | - I O Imosemi
- Department of Anatomy, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - O Alabi
- Department of Mathematics and Statistics, Rufus Giwa polytechnic, Owo, Ondo State, Nigeria
| | - O T Olaniyan
- Department of Physiology, Rhema University, Aba, Nigeria
| | - F O Ibitoye
- Department of Science Laboratory Technology, Rufus Giwa polytechnic, Owo, Ondo State, Nigeria
| | - P Faduola
- Androcare Fertility Centre, Lagos, Nigeria
| | - D S Bodun
- Department of Biochemistry, Adekunle Ajasin University, Nigeria
| | - N Y Wike
- Department of Physiology, Rhema University, Aba, Nigeria
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4
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Qu R, Zhang Z, Wu L, Li Q, Mu J, Zhao L, Yan Z, Wang W, Zeng Y, Liu R, Dong J, Li Q, Sun X, Wang L, Sang Q, Chen B, Kuang Y. ADGB variants cause asthenozoospermia and male infertility. Hum Genet 2023; 142:735-748. [PMID: 36995441 DOI: 10.1007/s00439-023-02546-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 03/15/2023] [Indexed: 03/31/2023]
Abstract
Asthenozoospermia is one of the main factors leading to male infertility, but the genetic mechanisms have not been fully elucidated. Variants in the androglobin (ADGB) gene were identified in an infertile male characterized by asthenozoospermia. The variants disrupted the binding of ADGB to calmodulin. Adgb-/- male mice were infertile due to reduced sperm concentration (< 1 × 106 /mL) and motility. Spermatogenesis was also abnormal, with malformation of both elongating and elongated spermatids, and there was an approximately twofold increase in apoptotic cells in the cauda epididymis. These exacerbated the decline in sperm motility. It is surprising that ICSI with testicular spermatids allows fertilization and eventually develops into blastocyst. Through mass spectrometry, we identified 42 candidate proteins that are involved in sperm assembly, flagella formation, and sperm motility interacting with ADGB. In particular, CFAP69 and SPEF2 were confirmed to bind to ADGB. Collectively, our study suggests the potential important role of ADGB in human fertility, revealing its relevance to spermatogenesis and infertility. This expands our knowledge of the genetic causes of asthenozoospermia and provides a theoretical basis for using ADGB as an underlying genetic marker for infertile males.
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Affiliation(s)
- Ronggui Qu
- The Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering and the Institute of Pediatrics, Children's Hospital of Fudan University, Fudan University, Shanghai, 200032, China
| | - Zhihua Zhang
- The Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering and the Institute of Pediatrics, Children's Hospital of Fudan University, Fudan University, Shanghai, 200032, China
| | - Ling Wu
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Qun Li
- The Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering and the Institute of Pediatrics, Children's Hospital of Fudan University, Fudan University, Shanghai, 200032, China
| | - Jian Mu
- The Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering and the Institute of Pediatrics, Children's Hospital of Fudan University, Fudan University, Shanghai, 200032, China
| | - Lin Zhao
- The Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering and the Institute of Pediatrics, Children's Hospital of Fudan University, Fudan University, Shanghai, 200032, China
| | - Zheng Yan
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Wenjing Wang
- The Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering and the Institute of Pediatrics, Children's Hospital of Fudan University, Fudan University, Shanghai, 200032, China
| | - Yang Zeng
- The Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering and the Institute of Pediatrics, Children's Hospital of Fudan University, Fudan University, Shanghai, 200032, China
| | - Ruyi Liu
- The Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering and the Institute of Pediatrics, Children's Hospital of Fudan University, Fudan University, Shanghai, 200032, China
| | - Jie Dong
- The Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering and the Institute of Pediatrics, Children's Hospital of Fudan University, Fudan University, Shanghai, 200032, China
| | - Qiaoli Li
- The Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering and the Institute of Pediatrics, Children's Hospital of Fudan University, Fudan University, Shanghai, 200032, China
| | - Xiaoxi Sun
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, 200011, China
| | - Lei Wang
- The Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering and the Institute of Pediatrics, Children's Hospital of Fudan University, Fudan University, Shanghai, 200032, China
| | - Qing Sang
- The Institutes of Biomedical Sciences, the State Key Laboratory of Genetic Engineering and the Institute of Pediatrics, Children's Hospital of Fudan University, Fudan University, Shanghai, 200032, China.
| | - Biaobang Chen
- NHC Key Lab of Reproduction Regulation (Shanghai Institute for Biomedical and Pharmaceutical Technologies), Fudan University, Shanghai, 200032, China.
| | - Yanping Kuang
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
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Gao Y, Wu H, Xu Y, Shen Q, Xu C, Geng H, Lv M, Tan Q, Li K, Tang D, Song B, Zhou P, Wei Z, He X, Cao Y. Novel biallelic mutations in SLC26A8 cause severe asthenozoospermia in humans owing to midpiece defects: Insights into a putative dominant genetic disease. Hum Mutat 2021; 43:434-443. [PMID: 34923715 DOI: 10.1002/humu.24322] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/13/2021] [Accepted: 12/16/2021] [Indexed: 12/23/2022]
Abstract
To investigate the genetic cause of male infertility characterized by severe asthenozoospermia, two unrelated infertile men with severe asthenozoospermia from nonconsanguineous Chinese families were enrolled, and whole exome sequencing were performed to identify the potential pathogenic mutations. Novel compound heterozygous mutations (NK062 III-1: c.290T>C, p.Leu97Pro; c.1664delT, p.Ile555Thrfs*11/NK038 III-1: c.212G>T, p.Arg71Leu; c.290T>C, p.Leu97Pro) in SLC26A8 were identified. All mutations were inherited from their heterozygous parents and are predicted to be disease-causing by sorts intolerant from tolerant, PolyPhen-2, Mutation Taster, and Combined Annotation Dependent Depletion. In silico mutant SLC26A8 models predict that mutations p.Leu97Pro and p.Arg71Leu cause changes in the α-helix, which may result in functional defects in the protein. Notably, heterozygous male carriers of each mutation in both families were able to reproduce naturally, which is inconsistent with previous reports. Ultrastructural analysis revealed severe asthenozoospermia associated with absence of the mitochondrial sheath and annulus in spermatozoa from both the probands, and both structural defects were verified by HSP60 and SEPT4 immunofluorescence analysis. SLC26A8 levels were significantly reduced in spermatozoa from patients harboring biallelic SLC26A8 mutations, and both patients achieved good prognosis following intracytoplasmic sperm injection. Our findings indicate that mutations in SLC26A8 could manifest as a recessive genetic cause of severe asthenozoospermia and male infertility.
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Affiliation(s)
- Yang Gao
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, China.,Key Laboratory of Population Health Across Life Cycle, Anhui Medical University, Ministry of Education of the People's Republic of China, Hefei, China
| | - Huan Wu
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, China.,Key Laboratory of Population Health Across Life Cycle, Anhui Medical University, Ministry of Education of the People's Republic of China, Hefei, China
| | - Yuping Xu
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, China.,Key Laboratory of Population Health Across Life Cycle, Anhui Medical University, Ministry of Education of the People's Republic of China, Hefei, China
| | - Qunshan Shen
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, China.,Key Laboratory of Population Health Across Life Cycle, Anhui Medical University, Ministry of Education of the People's Republic of China, Hefei, China
| | - Chuan Xu
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, China.,Key Laboratory of Population Health Across Life Cycle, Anhui Medical University, Ministry of Education of the People's Republic of China, Hefei, China
| | - Hao Geng
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, China.,Key Laboratory of Population Health Across Life Cycle, Anhui Medical University, Ministry of Education of the People's Republic of China, Hefei, China
| | - Mingrong Lv
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, China.,Anhui Province Key Laboratory of Reproductive Health and Genetics, Hefei, China
| | - Qing Tan
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,Anhui Provincial Human Sperm Bank, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Kuokuo Li
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, China.,Anhui Province Key Laboratory of Reproductive Health and Genetics, Hefei, China
| | - Dongdong Tang
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, China.,Key Laboratory of Population Health Across Life Cycle, Anhui Medical University, Ministry of Education of the People's Republic of China, Hefei, China
| | - Bing Song
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, China.,Key Laboratory of Population Health Across Life Cycle, Anhui Medical University, Ministry of Education of the People's Republic of China, Hefei, China
| | - Ping Zhou
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, China.,Key Laboratory of Population Health Across Life Cycle, Anhui Medical University, Ministry of Education of the People's Republic of China, Hefei, China
| | - Zhaolian Wei
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, China.,Key Laboratory of Population Health Across Life Cycle, Anhui Medical University, Ministry of Education of the People's Republic of China, Hefei, China
| | - Xiaojin He
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, China.,Key Laboratory of Population Health Across Life Cycle, Anhui Medical University, Ministry of Education of the People's Republic of China, Hefei, China
| | - Yunxia Cao
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, China.,Key Laboratory of Population Health Across Life Cycle, Anhui Medical University, Ministry of Education of the People's Republic of China, Hefei, China
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Azhar M, Altaf S, Uddin I, Cheng J, Wu L, Tong X, Qin W, Bao J. Towards Post-Meiotic Sperm Production: Genetic Insight into Human Infertility from Mouse Models. Int J Biol Sci 2021; 17:2487-2503. [PMID: 34326689 PMCID: PMC8315030 DOI: 10.7150/ijbs.60384] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 05/16/2021] [Indexed: 02/06/2023] Open
Abstract
Declined quality and quantity of sperm is currently the major cause of patients suffering from infertility. Male germ cell development is spatiotemporally regulated throughout the whole developmental process. While it has been known that exogenous factors, such as environmental exposure, diet and lifestyle, et al, play causative roles in male infertility, recent progress has revealed abundant genetic mutations tightly associated with defective male germline development. In mammals, male germ cells undergo dramatic morphological change (i.e., nuclear condensation) and chromatin remodeling during post-meiotic haploid germline development, a process termed spermiogenesis; However, the molecular machinery players and functional mechanisms have yet to be identified. To date, accumulated evidence suggests that disruption in any step of haploid germline development is likely manifested as fertility issues with low sperm count, poor sperm motility, aberrant sperm morphology or combined. With the continually declined cost of next-generation sequencing and recent progress of CRISPR/Cas9 technology, growing studies have revealed a vast number of disease-causing genetic variants associated with spermiogenic defects in both mice and humans, along with mechanistic insights partially attained and validated through genetically engineered mouse models (GEMMs). In this review, we mainly summarize genes that are functional at post-meiotic stage. Identification and characterization of deleterious genetic variants should aid in our understanding of germline development, and thereby further improve the diagnosis and treatment of male infertility.
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Affiliation(s)
- Muhammad Azhar
- Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Anhui, China
| | - Saba Altaf
- Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Anhui, China
| | - Islam Uddin
- Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Anhui, China
| | - Jinbao Cheng
- The 901th hospital of Joint logistics support Force of PLA, Anhui, China
| | - Limin Wu
- Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Anhui, China
| | - Xianhong Tong
- Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Anhui, China
| | - Weibing Qin
- NHC Key Laboratory of Male Reproduction and Genetics, Family Planning Research Institute of Guangdong Province, China
| | - Jianqiang Bao
- Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Anhui, China
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7
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Jamin SP, Hikmet F, Mathieu R, Jégou B, Lindskog C, Chalmel F, Primig M. Combined RNA/tissue profiling identifies novel Cancer/testis genes. Mol Oncol 2021; 15:3003-3023. [PMID: 33426787 PMCID: PMC8564638 DOI: 10.1002/1878-0261.12900] [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] [Received: 07/20/2020] [Revised: 11/19/2020] [Accepted: 12/24/2020] [Indexed: 11/14/2022] Open
Abstract
Cancer/Testis (CT) genes are induced in germ cells, repressed in somatic cells, and derepressed in somatic tumors, where these genes can contribute to cancer progression. CT gene identification requires data obtained using standardized protocols and technologies. This is a challenge because data for germ cells, gonads, normal somatic tissues, and a wide range of cancer samples stem from multiple sources and were generated over substantial periods of time. We carried out a GeneChip‐based RNA profiling analysis using our own data for testis and enriched germ cells, data for somatic cancers from the Expression Project for Oncology, and data for normal somatic tissues from the Gene Omnibus Repository. We identified 478 candidate loci that include known CT genes, numerous genes associated with oncogenic processes, and novel candidates that are not referenced in the Cancer/Testis Database (www.cta.lncc.br). We complemented RNA expression data at the protein level for SPESP1, GALNTL5, PDCL2, and C11orf42 using cancer tissue microarrays covering malignant tumors of breast, uterus, thyroid, and kidney, as well as published RNA profiling and immunohistochemical data provided by the Human Protein Atlas (www.proteinatlas.org). We report that combined RNA/tissue profiling identifies novel CT genes that may be of clinical interest as therapeutical targets or biomarkers. Our findings also highlight the challenges of detecting truly germ cell‐specific mRNAs and the proteins they encode in highly heterogenous testicular, somatic, and tumor tissues.
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Affiliation(s)
- Soazik P Jamin
- Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S, Univ Rennes, France
| | - Feria Hikmet
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Rudbeck Laboratory, Uppsala University, Sweden
| | - Romain Mathieu
- Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S, Univ Rennes, France.,Department of Urology, University Hospital, Rennes, France
| | - Bernard Jégou
- Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S, Univ Rennes, France
| | - Cecilia Lindskog
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Rudbeck Laboratory, Uppsala University, Sweden
| | - Frédéric Chalmel
- Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S, Univ Rennes, France
| | - Michael Primig
- Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S, Univ Rennes, France
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8
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Akintayo A, Stanley P. Roles for Golgi Glycans in Oogenesis and Spermatogenesis. Front Cell Dev Biol 2019; 7:98. [PMID: 31231650 PMCID: PMC6566014 DOI: 10.3389/fcell.2019.00098] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Accepted: 05/21/2019] [Indexed: 12/12/2022] Open
Abstract
Glycosylation of proteins by N- and O-glycans or glycosaminoglycans (GAGs) mostly begins in the endoplasmic reticulum and is further orchestrated in the Golgi compartment via the action of >100 glycosyltransferases that reside in this complex organelle. The synthesis of glycolipids occurs in the Golgi, also by resident glycosyltransferases. A defect in the glycosylation machinery may impair the functions of glycoproteins and other glycosylated molecules, and lead to a congenital disorder of glycosylation (CDG). Spermatogenesis in the male and oogenesis in the female are tightly regulated differentiation events leading to the production of functional gametes. Insights into roles for glycans in gamete production have been obtained from mutant mice following deletion or inactivation of genes that encode a glycosylation activity. In this review, we will summarize the effects of altering the synthesis of N-glycans, O-glycans, proteoglycans, glycophosphatidylinositol (GPI) anchored proteins, and glycolipids during gametogenesis in the mouse. Glycosylation genes whose deletion causes embryonic lethality have been investigated following conditional deletion using various Cre recombinase transgenes with a cell-type specific promoter. The potential effects of mutations in corresponding glycosylation genes of humans will be discussed in relation to consequences to fertility and potential for use in contraception.
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Affiliation(s)
- Ayodele Akintayo
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, United States
| | - Pamela Stanley
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, United States
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