1
|
Stenta T, Assis M, Ayers K, Tucker EJ, Halman A, Gook D, Sinclair AH, Elliott DA, Jayasinghe Y, Conyers R. Pharmacogenomic studies of fertility outcomes in pediatric cancer survivors - A systematic review. Clin Transl Sci 2024; 17:e13827. [PMID: 38924306 PMCID: PMC11199333 DOI: 10.1111/cts.13827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 04/18/2024] [Accepted: 04/25/2024] [Indexed: 06/28/2024] Open
Abstract
For the same age, sex, and dosage, there can be significant variation in fertility outcomes in childhood cancer survivors. Genetics may explain this variation. This study aims to: (i) review the genetic contributions to infertility, (ii) search for pharmacogenomic studies looking at interactions of cancer treatment, genetic predisposition and fertility-related outcomes. Systematic searches in MEDLINE Ovid, Embase Classic+Embase, and PubMed were conducted using the following selection criteria: (i) pediatric, adolescent, and young adult cancer survivors, below 25 years old at the time of diagnosis, (ii) fertility outcome measures after cancer therapy, (iii) genetic considerations. Studies were excluded if they were (i) conducted in animal models, (ii) were not published in English, (iii) editorial letters, (iv) theses. Articles were screened in Covidence by at least two independent reviewers, followed by data extraction and a risk of bias assessment using the Quality in Prognostic Studies tool. Eight articles were reviewed with a total of 29 genes. Outcome measures included sperm concentration, azoospermia, AMH levels, assessment of premature menopause, ever being pregnant or siring a pregnancy. Three studies included replication cohorts, which attempted replication of SNP findings for NPY2R, BRSK1, FANCI, CYP2C19, CYP3A4, and CYP2B6. Six studies were rated with a high risk of bias. Differing methods may explain a lack of replication, and small cohorts may have contributed to few significant findings. Larger, prospective longitudinal studies with an unbiased genome-wide focus will be important to replicate significant results, which can be applied clinically.
Collapse
Affiliation(s)
- Tayla Stenta
- Cancer Therapies, Stem Cell MedicineMurdoch Children's Research InstituteParkvilleVictoriaAustralia
| | - Michael Assis
- Cancer Therapies, Stem Cell MedicineMurdoch Children's Research InstituteParkvilleVictoriaAustralia
- Department of Obstetrics, Gynaecology and Newborn HealthRoyal Women's Hospital, University of MelbourneParkvilleVictoriaAustralia
| | - Katie Ayers
- Department of PaediatricsUniversity of MelbourneParkvilleVictoriaAustralia
- Reproductive DevelopmentMurdoch Children's Research InstituteParkvilleVictoriaAustralia
| | - Elena J. Tucker
- Department of PaediatricsUniversity of MelbourneParkvilleVictoriaAustralia
- Reproductive DevelopmentMurdoch Children's Research InstituteParkvilleVictoriaAustralia
| | - Andreas Halman
- Cancer Therapies, Stem Cell MedicineMurdoch Children's Research InstituteParkvilleVictoriaAustralia
- Victorian Clinical Genetics ServicesMurdoch Children's Research InstituteMelbourneVictoriaAustralia
| | - Debra Gook
- Department of Obstetrics, Gynaecology and Newborn HealthRoyal Women's Hospital, University of MelbourneParkvilleVictoriaAustralia
- Gynaecology, Royal Children‘s HospitalParkvilleVictoriaAustralia
- Reproductive Services, The Royal Women's HospitalParkvilleVictoriaAustralia
| | - Andrew H. Sinclair
- Department of PaediatricsUniversity of MelbourneParkvilleVictoriaAustralia
- Reproductive DevelopmentMurdoch Children's Research InstituteParkvilleVictoriaAustralia
| | - David A. Elliott
- Cancer Therapies, Stem Cell MedicineMurdoch Children's Research InstituteParkvilleVictoriaAustralia
- Department of PaediatricsUniversity of MelbourneParkvilleVictoriaAustralia
| | - Yasmin Jayasinghe
- Department of Obstetrics, Gynaecology and Newborn HealthRoyal Women's Hospital, University of MelbourneParkvilleVictoriaAustralia
- Gynaecology, Royal Children‘s HospitalParkvilleVictoriaAustralia
| | - Rachel Conyers
- Cancer Therapies, Stem Cell MedicineMurdoch Children's Research InstituteParkvilleVictoriaAustralia
- Department of PaediatricsUniversity of MelbourneParkvilleVictoriaAustralia
- Children's Cancer Centre, The Royal Children's HospitalParkvilleVictoriaAustralia
| |
Collapse
|
2
|
Mukherjee AG, Gopalakrishnan AV. Unlocking the mystery associated with infertility and prostate cancer: an update. Med Oncol 2023; 40:160. [PMID: 37099242 DOI: 10.1007/s12032-023-02028-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 04/08/2023] [Indexed: 04/27/2023]
Abstract
Male-specific reproductive disorders and cancers have increased intensely in recent years, making them a significant public health problem. Prostate cancer (PC) is the most often diagnosed cancer in men and is one of the leading causes of cancer-related mortality. Both genetic and epigenetic modifications contribute to the development and progression of PC, even though the exact underlying processes causing this disease have yet to be identified. Male infertility is also a complex and poorly understood phenomenon believed to afflict a significant portion of the male population. Chromosomal abnormalities, compromised DNA repair systems, and Y chromosome alterations are just a few of the proposed explanations. It is becoming widely accepted that infertility shares a link with PC. Much of the link between infertility and PC is probably attributable to common genetic defects. This article provides an overview of PC and spermatogenic abnormalities. This study also investigates the link between male infertility and PC and uncovers the underlying reasons, risk factors, and biological mechanisms contributing to this association.
Collapse
Affiliation(s)
- Anirban Goutam Mukherjee
- Department of Biomedical Sciences, School of Bio-Sciences and Technology, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, 632014, India
| | - Abilash Valsala Gopalakrishnan
- Department of Biomedical Sciences, School of Bio-Sciences and Technology, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, 632014, India.
| |
Collapse
|
3
|
Arunkumar R, Kumaresan A, Sinha MK, Elango K, Ebenezer Samuel King JP, Nag P, Karuthadurai T, Baithalu RK, Mohanty TK, Kumar R, Datta TK. The cryopreservation process induces alterations in proteins associated with bull sperm quality: The equilibration process could be a probable critical control point. Front Endocrinol (Lausanne) 2022; 13:1064956. [PMID: 36568066 PMCID: PMC9787546 DOI: 10.3389/fendo.2022.1064956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Accepted: 11/21/2022] [Indexed: 12/13/2022] Open
Abstract
The present study quantitatively characterized the proteomic changes in bull spermatozoa induced by the cryopreservation process. We performed high-throughput comparative global proteomic profiling of freshly ejaculated (before cryopreservation), equilibrated (refrigerated storage; during cryopreservation), and frozen (ultralow temperature; after cryopreservation) bull spermatozoa. Using the liquid chromatography-mass spectrometry (LC-MS/MS) technique, a total of 1,692, 1,415, and 1,286 proteins were identified in fresh, equilibrated, and cryopreserved spermatozoa, respectively. When the proteome of fresh spermatozoa was compared with equilibrated spermatozoa, we found that 166 proteins were differentially expressed. When equilibrated spermatozoa were compared with cryopreserved spermatozoa, we found that 147 proteins were differentially expressed between them. Similarly, we found that 156 proteins were differentially expressed between fresh and cryopreserved spermatozoa. Among these proteins, the abundance of 105 proteins was lowered during the equilibration process itself, while the abundance of 43 proteins was lowered during ultralow temperature preservation. Remarkably, the equilibration process lowered the abundance of sperm proteins involved in energy metabolism, structural integrity, and DNA repair and increased the abundance of proteins associated with proteolysis and protein degradation. The abundance of sperm proteins associated with metabolism, cGMP-PKG (cyclic guanosine 3',5'-monophosphate-dependent protein kinase G) signaling, and regulation of the actin cytoskeleton was also altered during the equilibration process. Collectively, the present study showed that the equilibration step in the bull sperm cryopreservation process was the critical point for sperm proteome, during which a majority of proteomic alterations in sperm occurred. These findings are valuable for developing efficient protocols to minimize protein damage and to improve the quality and fertility of cryopreserved bull spermatozoa.
Collapse
Affiliation(s)
- Ramasamy Arunkumar
- Theriogenology Laboratory, Southern Regional Station of ICAR-National Dairy Research Institute, Bengaluru, India
| | - Arumugam Kumaresan
- Theriogenology Laboratory, Southern Regional Station of ICAR-National Dairy Research Institute, Bengaluru, India
- *Correspondence: Arumugam Kumaresan, ;
| | - Manish Kumar Sinha
- Theriogenology Laboratory, Southern Regional Station of ICAR-National Dairy Research Institute, Bengaluru, India
| | - Kamaraj Elango
- Theriogenology Laboratory, Southern Regional Station of ICAR-National Dairy Research Institute, Bengaluru, India
| | | | - Pradeep Nag
- Theriogenology Laboratory, Southern Regional Station of ICAR-National Dairy Research Institute, Bengaluru, India
| | - Thirumalaisamy Karuthadurai
- Theriogenology Laboratory, Southern Regional Station of ICAR-National Dairy Research Institute, Bengaluru, India
| | - Rubina Kumari Baithalu
- Animal Reproduction, Gynaecology and Obstetrics, ICAR-National Dairy Research Institute, Karnal, India
| | - Tushar Kumar Mohanty
- Animal Reproduction, Gynaecology and Obstetrics, ICAR-National Dairy Research Institute, Karnal, India
| | - Rakesh Kumar
- Animal Genomics Laboratory, Indian Council for Agricultural Research (ICAR)-National Dairy Research Institute, Karnal, India
| | - Tirtha Kumar Datta
- Animal Genomics Laboratory, Indian Council for Agricultural Research (ICAR)-National Dairy Research Institute, Karnal, India
| |
Collapse
|
4
|
Karimian M, Parvaresh L, Behjati M. Genetic variations as molecular diagnostic factors for idiopathic male infertility: current knowledge and future perspectives. Expert Rev Mol Diagn 2021; 21:1191-1210. [PMID: 34555965 DOI: 10.1080/14737159.2021.1985469] [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] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Infertility is a major health problem, worldwide, which affects 10-15% of couples. About half a percent of infertility cases are related to male-related factors. Male infertility is a complex disease that is the result of various insults as lifestyle issues, genetics, and epigenetic factors. Idiopathic infertility is responsible for 30% of total cases. The genetic factors responsible for male infertility include chromosomal abnormalities, deletions of chromosome Y, and mutations and genetic variations of key genes. AREAS COVERED In this review article, we aim to narrate performed studies on polymorphisms of essential genes involved in male infertility including folate metabolizing genes, oxidative stress-related genes, inflammation, and cellular pathways related to spermatogenesis. Moreover, possible pathophysiologic mechanisms responsible for genetic polymorphisms are discussed. EXPERT OPINION Analysis and assessment of these genetic variations could help in screening, diagnosis, and treatment of idiopathic male infertility.
Collapse
Affiliation(s)
- Mohammad Karimian
- Department of Molecular and Cell Biology, Faculty of Basic Sciences, University of Mazandaran, Babolsar, Iran
| | - Leila Parvaresh
- Department of Anatomy, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohaddeseh Behjati
- Cellular, Molecular and Genetics Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| |
Collapse
|
5
|
Krausz C, Cioppi F. Genetic Factors of Non-Obstructive Azoospermia: Consequences on Patients' and Offspring Health. J Clin Med 2021; 10:jcm10174009. [PMID: 34501457 PMCID: PMC8432470 DOI: 10.3390/jcm10174009] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/30/2021] [Accepted: 08/31/2021] [Indexed: 12/20/2022] Open
Abstract
Non-Obstructive Azoospermia (NOA) affects about 1% of men in the general population and is characterized by clinical heterogeneity implying the involvement of several different acquired and genetic factors. NOA men are at higher risk to be carriers of known genetic anomalies such as karyotype abnormalities and Y-chromosome microdeletions in respect to oligo-normozoospermic men. In recent years, a growing number of novel monogenic causes have been identified through Whole Exome Sequencing (WES). Genetic testing is useful for diagnostic and pre-TESE prognostic purposes as well as for its potential relevance for general health. Several epidemiological observations show a link between azoospermia and higher morbidity and mortality rate, suggesting a common etiology for NOA and some chronic diseases, including cancer. Since on average 50% of NOA patients has a positive TESE outcome, the identification of genetic factors in NOA patients has relevance also to the offspring's health. Although still debated, the observed increased risk of certain neurodevelopmental disorders, as well as impaired cardiometabolic and reproductive health profile in children conceived with ICSI from NOA fathers may indicate the involvement of transmissible genetic factors. This review provides an update on the reproductive and general health consequences of known genetic factors causing NOA, including offspring's health.
Collapse
|
6
|
Markantoni M, Sarafidou T, Kyrgiafini MA, Chatziparasidou A, Christoforidis N, Dafopoulos K, Mamuris Z. Replicating a GWAS: two novel candidate markers for oligospermia in Greek population. Mol Biol Rep 2021; 48:4967-4972. [PMID: 34097203 DOI: 10.1007/s11033-021-06470-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 06/01/2021] [Indexed: 12/01/2022]
Abstract
Genome-wide association studies have paved the way for the discovery of new markers regarding many diseases, including male infertility. A previous study on Caucasians highlighted 172 polymorphisms for their putative association with male infertility and we attempted to replicate these findings on our dataset comprising of Greek male individuals (n = 360). We retrieved 59 out of 172 polymorphisms and tested for all association models on 278 normospermic men and 82 patients with an abnormal seminogram, later separated into oligozoospermic and asthenozoospermic groups. Our findings indicate that two SNPs (rs2296225 in KIF17, rs7224496 in SMYD4) are associated with male infertility in the Greek population and have not been recorded in literature as of yet. These novel markers need further validation via additional studies and an increased individual number. All in all, replication studies, possess the power to validate existing polymorphisms found across all population and thus increase both statistical significance as well as identify novel potentially diagnostic markers.
Collapse
Affiliation(s)
- Maria Markantoni
- Laboratory of Genetics, Comparative and Evolutionary Biology, Department of Biochemistry and Biotechnology, University of Thessaly, Larisa, Greece
| | - Theologia Sarafidou
- Laboratory of Genetics, Comparative and Evolutionary Biology, Department of Biochemistry and Biotechnology, University of Thessaly, Larisa, Greece
| | - Maria-Anna Kyrgiafini
- Laboratory of Genetics, Comparative and Evolutionary Biology, Department of Biochemistry and Biotechnology, University of Thessaly, Larisa, Greece
| | | | | | - Konstantinos Dafopoulos
- Obstetrics and Gynaecology Department, Department of Medicine, University of Thessaly, Larisa, Greece
| | - Zissis Mamuris
- Laboratory of Genetics, Comparative and Evolutionary Biology, Department of Biochemistry and Biotechnology, University of Thessaly, Larisa, Greece.
| |
Collapse
|
7
|
Metin Mahmutoglu A, Gunes S, Asci R, Henkel R, Aydin O. Association of XRCC1 and ERCC2 promoters' methylation with chromatin condensation and sperm DNA fragmentation in idiopathic oligoasthenoteratozoospermic men. Andrologia 2020; 53:e13925. [PMID: 33355950 DOI: 10.1111/and.13925] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 10/23/2020] [Accepted: 11/10/2020] [Indexed: 12/13/2022] Open
Abstract
The aim of the study was to investigate whether the promoter methylation of XRCC1 and ERCC2 genes is associated with sperm DNA fragmentation and chromatin condensation in idiopathic oligoasthenoteratozoospermic men. This study involved 77 infertile men with idiopathic oligoasthenoteratozoospermia and 51 normozoospermic controls. The methylight method, TUNEL assay and aniline blue staining were used for the evaluation of XRCC1 and ERCC2 genes' methylation, SDF and sperm chromatin condensation, respectively. SDF (p = .004) and XRCC1 methylation (p = .0056) were found to be significantly higher in men with idiopathic OAT than in the controls, while mature spermatozoa frequency was higher in controls as compared to infertile men (p < .0001). No significant association was found between SDF and methylation of XRCC1 and ERCC2 genes (p = .9277 and p = .8257, respectively). However, compared to the cut-off point obtained by receiver operating characteristic analysis, a significant association was found between SDF and XRCC1 methylation, positive and negative methylation groups, generated according to the cut-off value for XRCC1. XRCC1 methylation was found to have a significant effect on chromatin condensation (p = .0017). No significant difference was detected among ERCC2 methylation, male infertility and SDF. In conclusion, XRCC1 methylation may have a role in sperm chromatin condensation and idiopathic OAT.
Collapse
Affiliation(s)
- Asli Metin Mahmutoglu
- Faculty of Medicine, Department of Medical Biology, Ondokuz Mayis University, Samsun, Turkey
| | - Sezgin Gunes
- Faculty of Medicine, Department of Medical Biology, Ondokuz Mayis University, Samsun, Turkey.,Department of Multidisciplinary Molecular Medicine, Graduate School of Health Sciences, Ondokuz Mayis University, Samsun, Turkey
| | - Ramazan Asci
- Department of Multidisciplinary Molecular Medicine, Graduate School of Health Sciences, Ondokuz Mayis University, Samsun, Turkey.,Faculty of Medicine, Department of Urology, Ondokuz Mayis University, Samsun, Turkey
| | - Ralf Henkel
- Department of Medical Bioscience, University of the Western Cape, Bellville, South Africa.,American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Oguz Aydin
- Faculty of Medicine, Department of Pathology, Ondokuz Mayis University, Samsun, Turkey
| |
Collapse
|
8
|
Wu J, Dong X, Liu K, Xia Y, Wang X, Shen O, Ding X, Zhang J. Association of semenogelin (SEMG) gene variants in idiopathic male infertility in Chinese-Han population. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2019; 82:928-934. [PMID: 31535590 DOI: 10.1080/15287394.2019.1669304] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Infertility is known to occur frequently worldwide, and the incidence is continuing to rise in China. It is known that semenogelin (SEMG) protein secreted by human seminal vesicles plays an important role in male reproductive system function. However, an association between alterations in SEMG gene functions and idiopathic male infertility occurrence in Chinese-Han population has not been examined. The aim of this study was thus to investigate the inherent relationship between SEMG gene alterations and idiopathic male infertility using a method of variant genotyping selection and semen quality analysis. A population of 484 males with clinically diagnosed idiopathic male infertility and 246 fertile controls were selected after signing consent forms. Results demonstrated a significantly increased frequency of idiopathic infertility with abnormal semen parameters such as semen volume, sperm concentration, sperm number per ejaculate, and sperm motility in variants carrying the rs2301366 TA genotype. Combined association analysis from target single-nucleotide polymorphisms (SNPs) was selected from the genotype database of unrelated Chinese-Han in Beijing individuals from the Hap Map. SNP array analysis in blood samples in each group was carried out by TaqMan Universal PCR Master Mix and TaqMan SNP Genotyping Assays. In addition, the interaction between SEMG SNPs and binding protein epididymal protease inhibitor (EPPIN) SNPs was determined. Our findings demonstrated that the presence of SEMG SNPs and EPPIN SNPs increased the frequency of idiopathic male infertility in Chinese-Han population. It is proposed that measurement of SEMG SNPs and EPPIN SNPs in carriers may thus be utilized to identify idiopathic male infertility.
Collapse
Affiliation(s)
- Jing Wu
- Department of Toxicology, School of Public Health, Medical College of Soochow University , Suzhou , China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases , Suzhou , China
| | - Xingxuan Dong
- Department of Toxicology, School of Public Health, Medical College of Soochow University , Suzhou , China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases , Suzhou , China
| | - Kaifan Liu
- Department of Toxicology, School of Public Health, Medical College of Soochow University , Suzhou , China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases , Suzhou , China
| | - Yankai Xia
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University , Nanjing , China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University , Nanjing , China
| | - Xinru Wang
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University , Nanjing , China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University , Nanjing , China
| | - Ouxi Shen
- Department of Occupational Health, Suzhou Industrial Park Center for Disease Control and Prevention , Suzhou , China
| | - Xinliang Ding
- Department of Public Health, Wuxi Center for Disease Control and Prevention , Wuxi , China
| | - Jie Zhang
- Department of Toxicology, School of Public Health, Medical College of Soochow University , Suzhou , China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases , Suzhou , China
| |
Collapse
|
9
|
Anoushirvani AA, Aghabozorgi R, Ahmadi A, Arjomandzadegan M, Khalili S, Sahraei M, Fereydouni T, Khademi Z. The Relationship Between rs3212986C>A Polymorphism and Tumor Stage in Lung Cancer Patients. Cureus 2019; 11:e4423. [PMID: 31245210 PMCID: PMC6559387 DOI: 10.7759/cureus.4423] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Background The nucleotide excision repair (NER) system is one of the most important deoxyribonucleic acid (DNA) repair mechanisms and is critical for chemotherapy resistance. We conducted the present study to investigate the association between two polymorphisms of excision of repair cross-complementing group 1 (ERCC1), the key component of the NER pathway, and the clinicopathological features of patients with non-small cell lung cancer (NSCLC). Methods A total of 38 patients with confirmed NSCLC were included in our study. DNA was extracted from peripheral blood. ERCC1 rs3212986 (8092) and rs11615 (118) were genotyped using molecular assays including polymerase chain reaction (PCR) with restriction fragment length polymorphism (by MboII and HpyCH4 enzymes) and sequencing. Results The PCR results indicated the correct performance of the genomics extraction and molecular protocols. The distribution of C/C, C/A and A/A genotypes at position 8092 was 42.10%, 47.36%, and 10.52% respectively (P=0.03). Multivariate regression analysis showed that there was a significant correlation between C8092A (rs3212986) polymorphism and metastasis, grade of the tumor, and response to treatment. Individuals carrying the rs3212986 CA genotype and A allele had a significantly worse response to the treatment. Also, the correlation between alteration at this genomics location and patients with NSCLC who used to smoke cigarettes was positive. However, no significant association was detected between rs11615 C118>T polymorphism and demographic characteristics of patients with NSCLC. Conclusion We concluded that in lung cancer patients there is a relationship between tumor stage and rs3212986C>A polymorphism.
Collapse
Affiliation(s)
| | - Reza Aghabozorgi
- Internal Medicine, Arak University of Medical Sciences, Arak, IRN
| | - Azam Ahmadi
- Genetics, Arak University of Medical Sciences, Arak, IRN
| | | | - Sara Khalili
- Microbiology, Arak University of Medical Sciences, Arak, IRN
| | - Maryam Sahraei
- Genetics, Arak University of Medical Sciences, Arak, IRN
| | - Taha Fereydouni
- Internal Medicine, Arak University of Medical Sciences, Arak, IRN
| | - Zoha Khademi
- Internal Medicine, Arak University of Medical Sciences, Arak, IRN
| |
Collapse
|
10
|
Nagirnaja L, Aston KI, Conrad DF. Genetic intersection of male infertility and cancer. Fertil Steril 2018; 109:20-26. [PMID: 29307395 DOI: 10.1016/j.fertnstert.2017.10.028] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 10/11/2017] [Accepted: 10/19/2017] [Indexed: 12/18/2022]
Abstract
Recent epidemiological studies have identified an association between male factor infertility and increased cancer risk, however, the underlying etiology for the shared risk has not been investigated. It is likely that much of the association between the two disease states can be attributed to underlying genetic lesions. In this article we review the reported associations between cancer and spermatogenic defects, and through database searches we identify candidate genes and gene classes that could explain some of the observed shared genetic risk. We discuss the importance of fully characterizing the genetic basis for the relationship between cancer and male factor infertility and propose future studies to that end.
Collapse
Affiliation(s)
- Liina Nagirnaja
- Department of Genetics, Washington University School of Medicine, St. Louis, Missouri
| | - Kenneth I Aston
- Department of Surgery, University of Utah School of Medicine, Salt Lake City, Utah
| | - Donald F Conrad
- Department of Genetics, Washington University School of Medicine, St. Louis, Missouri.
| |
Collapse
|
11
|
Singh V, Bansal SK, Sudhakar DVS, Chakraborty A, Trivedi S, Gupta G, Thangaraj K, Rajender S, Singh K. SNPs in ERCC1, ERCC2, and XRCC1 genes of the DNA repair pathway and risk of male infertility in the Asian populations: association study, meta-analysis, and trial sequential analysis. J Assist Reprod Genet 2018; 36:79-90. [PMID: 30390177 DOI: 10.1007/s10815-018-1339-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 10/12/2018] [Indexed: 01/05/2023] Open
Abstract
PURPOSE We investigated if substitutions in the ERCC1, ERCC2, and XRCC1 genes of the DNA repair pathway correlate with non-obstructive azoospermia and male infertility. METHODS A total of 548 azoospermic infertile males and 410 fertile controls were genotyped for XRCC1 399A > G, 280G > A, and ERCC1 C > A 3' UTR and 541 azoospermic infertile males and 416 fertile controls were genotyped for ERCC2 751A > C using iPLEX Gold Assay. Meta-analyses were performed on XRCC1 399A > G (1022 cases and 1004 controls), ERCC1 C > A 3' UTR (879 cases and 1059 controls), and ERCC2 751A > C (914 cases and 850 controls) polymorphisms to quantitatively estimate the significance of the association between these polymorphisms and the risk of infertility. RESULTS Statistically significant association between ERCC2 751A > C SNP and male infertility was found using the codominant model (p = 0.03). Results of meta-analysis suggested a lack of correlation with male infertility risk, which could be due to pooling of studies from different ethnic populations. Due to limited the number of studies, a stratified analysis for different ethnic groups could not be performed. CONCLUSION (S) In conclusion, AA genotype of 751A > C SNP in ERCC2 correlated with a higher risk of male infertility and may contribute to an increased risk of azoospermia and male infertility in Indian men.
Collapse
Affiliation(s)
- Vertika Singh
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi, 221005, India
| | | | - D V S Sudhakar
- CSIR-Centre for Cellular and Molecular Biology (CCMB), Hyderabad, India
| | - Arijit Chakraborty
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi, 221005, India
| | - Sameer Trivedi
- Department of Urology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Gopal Gupta
- Division of Endocrinology, Central Drug Research Institute, Lucknow, UP, India
| | | | - Singh Rajender
- Division of Endocrinology, Central Drug Research Institute, Lucknow, UP, India.
| | - Kiran Singh
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi, 221005, India.
| |
Collapse
|
12
|
Association of the VDAC3 gene polymorphism with sperm count in Han-Chinese population with idiopathic male infertility. Oncotarget 2018; 8:45242-45248. [PMID: 28431403 PMCID: PMC5542182 DOI: 10.18632/oncotarget.16891] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 03/27/2017] [Indexed: 11/25/2022] Open
Abstract
Voltage-dependent anion channel (VDAC) is a multifunctional channel protein across the outer mitochondrial membrane of somatic cells and participates in many physiological and pathophysiological processes. Up to now, only a few studies, including our previous studies, showed that VDAC exists in mammalian spermatozoa and is involved in spermatogenesis and sperm functions. There is no report about VDAC genetic variants in germinal tissues or cells. To investigate the possible association between VDAC genetic variants and human sperm quality, we performed semen analysis and variant Genotyping of VDAC3 subtype (rs7004637, rs16891278 and rs6773) of 523 Han-Chinese males with idiopathic infertility respectively by computer assisted semen analysis (CASA) and single nucleotide polymorphism (SNP) Genotyping assay. No significant association was found between rs7004637 and rs6773 genotypes and semen quality. However, the AG genotype of rs16891278 showed a significantly lower sperm concentration compared with the AA genotype (P = 0.044). Our findings suggest that VDAC3 genetic variants may be associated with human sperm count.
Collapse
|
13
|
Xiao F, Pu J, Wen Q, Huang Q, Zhang Q, Huang B, Huang S, Lan A, Zhang Y, Li J, Zhao D, Shen J, Wu H, He Y, Li H, Yang X. Association between the ERCC2 Asp312Asn polymorphism and risk of cancer. Oncotarget 2018; 8:48488-48506. [PMID: 28489582 PMCID: PMC5564664 DOI: 10.18632/oncotarget.17290] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 04/04/2017] [Indexed: 01/18/2023] Open
Abstract
Cancer is the leading cause of death in economically developed countries and the second leading cause of death in developing countries. The relationship between genetic polymorphisms and the risk of cancers has been widely researched. Excision repair cross-complementing group 2 (ERCC2) gene plays important roles in the nucleotide excision repair pathway. There is contrasting evidence on the association between the ERCC2 Asp312Asn polymorphism and the risk of cancer. We conducted a comprehensive meta-analysis in order to assess the correlation between these factors. We searched the PubMed, EMBASE, Science Direct, Web of Science, and CNKI databases for studies published from January 1, 2005 to January 1, 2016. Finally, 86 articles with 38,848 cases and 48,928 controls were included in the analysis. The overall analysis suggested a significant association between the ERCC2 Asp312Asn polymorphism and cancer risk. Furthermore, control source, ethnicity, genotyping method, and cancer type were used for subgroup analysis. The result of a trial sequential analysis indicated that the cumulative evidence is adequate; hence, further trials were unnecessary in the overall analysis for homozygote comparison. In summary, our results suggested that ERCC2 Asp312Asn polymorphism is associated with increased cancer risk. A significantly increased cancer risk was observed in Asian populations, but not in Caucasian populations. Furthermore, the ERCC2 Asp312Asn polymorphism is associated with bladder, esophageal, and gastric cancers, but not with breast, head and neck, lung, prostate, and skin cancers, and non-Hodgkin lymphoma. Further multi-center, well-designed studies are required to validate our results.
Collapse
Affiliation(s)
- Feifan Xiao
- Medical Scientific Research Center, Guangxi Medical University, Nanning, Guangxi, P.R. China.,First Clinical Academy, Guangxi Medical University, Nanning, Guangxi, P.R. China
| | - Jian Pu
- Liver and Gall Surgical Department, The Affiliated Hospital of Youjiang Medical College for Nationalities, Baise, Guangxi, P.R. China
| | - Qiongxian Wen
- School of Nursing, The Second Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, P.R. China
| | - Qin Huang
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning, Guangxi, P.R. China
| | - Qinle Zhang
- Genetic and Metabolic Central Laboratory, The Maternal and Children Health Hospital of Guangxi, Nanning, Guangxi, P.R. China
| | - Birong Huang
- Medical Scientific Research Center, Guangxi Medical University, Nanning, Guangxi, P.R. China.,First Clinical Academy, Guangxi Medical University, Nanning, Guangxi, P.R. China
| | - Shanshan Huang
- Medical Scientific Research Center, Guangxi Medical University, Nanning, Guangxi, P.R. China.,First Clinical Academy, Guangxi Medical University, Nanning, Guangxi, P.R. China
| | - Aihua Lan
- Medical Scientific Research Center, Guangxi Medical University, Nanning, Guangxi, P.R. China.,First Clinical Academy, Guangxi Medical University, Nanning, Guangxi, P.R. China
| | - Yuening Zhang
- Medical Scientific Research Center, Guangxi Medical University, Nanning, Guangxi, P.R. China
| | - Jiatong Li
- Medical Scientific Research Center, Guangxi Medical University, Nanning, Guangxi, P.R. China
| | - Dong Zhao
- Medical Scientific Research Center, Guangxi Medical University, Nanning, Guangxi, P.R. China
| | - Jing Shen
- Medical Scientific Research Center, Guangxi Medical University, Nanning, Guangxi, P.R. China
| | - Huayu Wu
- Department of Cell Biology and Genetics, School of Premedical Sciences, Guangxi Medical University, Nanning, Guangxi, P.R. China
| | - Yan He
- Geriatrics Cardiology Division, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, P.R. China
| | - Hongtao Li
- Medical Scientific Research Center, Guangxi Medical University, Nanning, Guangxi, P.R. China
| | - Xiaoli Yang
- Medical Scientific Research Center, Guangxi Medical University, Nanning, Guangxi, P.R. China
| |
Collapse
|
14
|
Vimal D, Kumar S, Pandey A, Sharma D, Saini S, Gupta S, Ravi Ram K, Chowdhuri DK. Mlh1 is required for female fertility in Drosophila melanogaster: An outcome of effects on meiotic crossing over, ovarian follicles and egg activation. Eur J Cell Biol 2018; 97:75-89. [DOI: 10.1016/j.ejcb.2017.12.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 11/29/2017] [Accepted: 12/15/2017] [Indexed: 10/18/2022] Open
|
15
|
Jahantigh D, Hosseinzadeh Colagar A. XRCC5 VNTR, XRCC6 -61C>G, and XRCC7 6721G>T Gene Polymorphisms Associated with Male Infertility Risk: Evidences from Case-Control and In Silico Studies. Int J Endocrinol 2017; 2017:4795076. [PMID: 28421111 PMCID: PMC5379132 DOI: 10.1155/2017/4795076] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2016] [Revised: 12/26/2016] [Accepted: 01/04/2017] [Indexed: 11/17/2022] Open
Abstract
We evaluate the association between genetic polymorphisms of XRCC5 VNTR, XRCC6 -61C>G, and XRCC7 6721G>T with male infertility susceptibility. A total of 392 men including 178 infertile males (102 idiopathic azoospermia and 76 severe oligozoospermia) and 214 healthy controls were recruited. XRCC6 -61C>G and XRCC7 6721G>T genotyping was performed by PCR-RFLP whereas XRCC5 VNTR was performed by PCR. The 2R allele and 2R allele carriers of XRCC5 VNTR polymorphism significantly decreased risk of male infertility. The mutant GG genotypes and carriers of the CG and GG genotypes of XRCC6 -61C>G showed increased risk for the male infertility. Furthermore, the G allele of the XRCC6 -61C>G was correlated with increased susceptibility to male infertility. Likewise, the T allele of the XRCC7 6721G>T polymorphism was associated with increased susceptibility to male infertility in azoospermia. In silico analysis predicted that the presence of tandem repeats in XRCC5 gene prompter can be sequence to bind to more nuclear factors. Also, rs2267437 (C>G) variant was located in a well-conserved region in XRCC6 promoter and this variation might lead to differential allelic expression. The XRCC7 6721G>T gene polymorphism occurred in an acceptor-splicing site, but this polymorphism has no severe modification on XRCC7 mRNA splicing. Our results indicate the association of XRCC5 VNTR, XRCC6 -61C>G, and XRCC7 6721G>T gene polymorphisms with male infertility in Iranian men.
Collapse
Affiliation(s)
- Danial Jahantigh
- Department of Molecular and Cell Biology, Faculty of Basic Sciences, University of Mazandaran, Babolsar, Iran
| | - Abasalt Hosseinzadeh Colagar
- Department of Molecular and Cell Biology, Faculty of Basic Sciences, University of Mazandaran, Babolsar, Iran
- *Abasalt Hosseinzadeh Colagar:
| |
Collapse
|
16
|
Aarts JMMJG, Alink GM, Scherjon F, MacDonald K, Smith AC, Nijveen H, Roebroeks W. Fire Usage and Ancient Hominin Detoxification Genes: Protective Ancestral Variants Dominate While Additional Derived Risk Variants Appear in Modern Humans. PLoS One 2016; 11:e0161102. [PMID: 27655273 PMCID: PMC5031311 DOI: 10.1371/journal.pone.0161102] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Accepted: 07/29/2016] [Indexed: 11/19/2022] Open
Abstract
Studies of the defence capacity of ancient hominins against toxic substances may contribute importantly to the reconstruction of their niche, including their diets and use of fire. Fire usage implies frequent exposure to hazardous compounds from smoke and heated food, known to affect general health and fertility, probably resulting in genetic selection for improved detoxification. To investigate whether such genetic selection occurred, we investigated the alleles in Neanderthals, Denisovans and modern humans at gene polymorphisms well-known to be relevant from modern human epidemiological studies of habitual tobacco smoke exposure and mechanistic evidence. We compared these with the alleles in chimpanzees and gorillas. Neanderthal and Denisovan hominins predominantly possess gene variants conferring increased resistance to these toxic compounds. Surprisingly, we observed the same in chimpanzees and gorillas, implying that less efficient variants are derived and mainly evolved in modern humans. Less efficient variants are observable from the first early Upper Palaeolithic hunter-gatherers onwards. While not clarifying the deep history of fire use, our results highlight the long-term stability of the genes under consideration despite major changes in the hominin dietary niche. Specifically for detoxification gene variants characterised as deleterious by epidemiological studies, our results confirm the predominantly recent appearance reported for deleterious human gene variants, suggesting substantial impact of recent human population history, including pre-Holocene expansions.
Collapse
Affiliation(s)
- Jac M. M. J. G. Aarts
- Faculty of Archaeology, Leiden University, Leiden, The Netherlands
- Laboratory of Molecular Biology, Department of Plant Sciences, Wageningen University, Wageningen, The Netherlands
- * E-mail:
| | - Gerrit M. Alink
- Faculty of Archaeology, Leiden University, Leiden, The Netherlands
- Division of Toxicology, Department of Agrotechnology and Food Sciences, Wageningen University, Wageningen, The Netherlands
| | - Fulco Scherjon
- Faculty of Archaeology, Leiden University, Leiden, The Netherlands
| | | | - Alison C. Smith
- Faculty of Archaeology, Leiden University, Leiden, The Netherlands
| | - Harm Nijveen
- Bioinformatics Group, Department of Plant Sciences, Wageningen University, Wageningen, The Netherlands
| | - Wil Roebroeks
- Faculty of Archaeology, Leiden University, Leiden, The Netherlands
| |
Collapse
|
17
|
Pseudo progression identification of glioblastoma with dictionary learning. Comput Biol Med 2016; 73:94-101. [PMID: 27100835 DOI: 10.1016/j.compbiomed.2016.03.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 03/28/2016] [Accepted: 03/30/2016] [Indexed: 02/05/2023]
Abstract
OBJECTIVE Although the use of temozolomide in chemoradiotherapy is effective, the challenging clinical problem of pseudo progression has been raised in brain tumor treatment. This study aims to distinguish pseudo progression from true progression. MATERIALS AND METHODS Between 2000 and 2012, a total of 161 patients with glioblastoma multiforme (GBM) were treated with chemoradiotherapy at our hospital. Among the patients, 79 had their diffusion tensor imaging (DTI) data acquired at the earliest diagnosed date of pseudo progression or true progression, and 23 had both DTI data and genomic data. Clinical records of all patients were kept in good condition. Volumetric fractional anisotropy (FA) images obtained from the DTI data were decomposed into a sequence of sparse representations. Then, a feature selection algorithm was applied to extract the critical features from the feature matrix to reduce the size of the feature matrix and to improve the classification accuracy. RESULTS The proposed approach was validated using the 79 samples with clinical DTI data. Satisfactory results were obtained under different experimental conditions. The area under the receiver operating characteristic (ROC) curve (AUC) was 0.87 for a given dictionary with 1024 atoms. For the subgroup of 23 samples, genomics data analysis was also performed. Results implied further perspective on pseudo progression classification. CONCLUSIONS The proposed method can determine pseudo progression and true progression with improved accuracy. Laboring segmentation is no longer necessary because this skillfully designed method is not sensitive to tumor location.
Collapse
|
18
|
Vazharova R, Kremensky I. Individual capacity for DNA repair and maintenance of genomic integrity: a fertile ground for studies in the field of assisted reproduction. BIOTECHNOL BIOTEC EQ 2016. [DOI: 10.1080/13102818.2016.1159923] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Affiliation(s)
- Radoslava Vazharova
- Department of Biology, Medical Genetics and Microbiology, Faculty of Medicine, Sofia University “St. Kliment Ohridski”, Sofia, Bulgaria
| | - Ivo Kremensky
- Center of Molecular Medicine, University Hospital of Obstetrics and Gynaecology “Maichin Dom”, Medical University of Sofia, Sofia, Bulgaria
| |
Collapse
|
19
|
Zhang J, Ding X, Li Y, Xia Y, Nie J, Yi C, Wang X, Tong J. Association of CLOCK gene variants with semen quality in idiopathic infertile Han-Chinese males. Reprod Biomed Online 2012; 25:536-42. [PMID: 22999556 DOI: 10.1016/j.rbmo.2012.07.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Revised: 07/16/2012] [Accepted: 07/23/2012] [Indexed: 11/18/2022]
Abstract
Recent experimental animal studies suggested that the circadian locomotor output cycles kaput protein gene (CLOCK) may play an important role in male reproduction. So far, such data for humans are not available. This study used single-nucleotide polymorphisms (SNP) to examine the association between CLOCK and semen quality in a human population with idiopathic infertility. Three-variant genotyping of CLOCK and semen analysis were performed in 478 men with idiopathic infertility by SNP genotyping assays and computer-aided sperm analysis. Subjects carrying a C allele at rs3749474 (CC and TC) presented significantly lower semen volume (P=<0.001 and 0.001, respectively) compared with the TT genotype. Subjects carrying the rs3749474 CC genotype had significantly lower sperm number per ejaculate (P=0.026) and sperm motility (P=0.021) than TT genotype carriers. rs1801260 TC genotype carriers had significantly lower sperm motility compared with the TT genotype (P=0.028). For the rs3817444 genotypes, CA and AA genotype carriers presented significantly lower semen volume compared with the CC genotype (P=0.022 and 0.001, respectively). The findings suggest, as far as is known for the first time, an association between CLOCK genetic variants and altered semen quality in a human population with idiopathic infertility. The gene encoding the circadian locomotor output cycles kaput protein (CLOCK) functions as an important positive enhancer of the circadian system. The observations reported in recent experimental animal studies suggested that CLOCK may play an important role in male reproduction. So far, such data for humans are not available. In this study, single-nucleotide polymorphisms (SNP) were used to examine the association between CLOCK and semen quality in human population with idiopathic infertility. Three-variant genotyping of CLOCK and semen analysis were performed in 478 males with idiopathic infertility by SNP genotyping assays and computer-assisted semen analysis. The results showed that the subjects carrying a C allele at rs3749474 (CC and TC) presented significantly lower semen volume compared with the TT genotype. For subjects carrying the CC genotype, sperm number per ejaculate and sperm motility were significantly lower compared with TT genotype carriers. The rs1801260 TC genotype carriers also had significantly lower sperm motility compared with the TT genotype. For the rs3817444 genotypes, the CA and AA genotype carriers presented significantly lower semen volume compared with the CC genotype. The findings suggested, as far as is known for the first time, an association between CLOCK genetic variants and altered semen quality in a human population with idiopathic infertility.
Collapse
Affiliation(s)
- Jie Zhang
- School of Public Health, Medical College of Soochow University, Suzhou 215123, China
| | | | | | | | | | | | | | | |
Collapse
|
20
|
Zhao D, Wu W, Xu B, Niu X, Cui H, Zhang Y, Wang Z, Wang X. Variants in the SRD5A2 gene are associated with quality of semen. Mol Med Rep 2012; 6:639-44. [PMID: 22735779 DOI: 10.3892/mmr.2012.965] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Accepted: 06/19/2012] [Indexed: 11/05/2022] Open
Abstract
Spermatogenesis and sperm maturation are androgen-dependent processes. Steroid 5α-reductase (SRD5A) is a key enzyme converting testosterone into the more active metabolite, dihydrotestosterone (DHT). We aimed to investigate the association between the genetic variants of SRD5A2 (rs4952197, rs2268797, rs13395648, rs523349 and rs632148) and semen quality. Variant genotyping and semen analysis was performed in 708 males with definite idiopathic infertility by TaqMan SNP genotyping assays and computer-assisted semen analysis, respectively. It was found that the rs13395648 TC genotype was associated with a significantly lower semen volume compared with the TT genotype (P=0.016). The same trend was found between the combination of the TC and CC genotypes and the TT genotype (P=0.020). With regard to variant rs632148, subjects with the GC genotype had significantly lower sperm motility in comparison to those with the GG genotype (P=0.029). The sperm motility between the combination of the GC and CC genotypes and the GC genotype was also significantly different (P=0.033). These findings indicate that genetic variants in the SRD5A2 gene may be associated with semen quality.
Collapse
Affiliation(s)
- Dan Zhao
- State Key Laboratory of Reproductive Medicine, Department of Urology, First Affiliated Hospital of Nanjing Medical University, and School of Public Health, Nanjing Medical University, Nanjing 210029, PR China
| | | | | | | | | | | | | | | |
Collapse
|
21
|
Ji G, Long Y, Zhou Y, Huang C, Gu A, Wang X. Common variants in mismatch repair genes associated with increased risk of sperm DNA damage and male infertility. BMC Med 2012; 10:49. [PMID: 22594646 PMCID: PMC3378460 DOI: 10.1186/1741-7015-10-49] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2011] [Accepted: 05/17/2012] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The mismatch repair (MMR) pathway plays an important role in the maintenance of the genome integrity, meiotic recombination and gametogenesis. This study investigated whether genetic variations in MMR genes are associated with an increased risk of sperm DNA damage and male infertility. METHODS We selected and genotyped 21 tagging single nucleotide polymorphisms (SNPs) in five MMR genes (MLH1, MLH3, PMS2, MSH4 and MSH5) using the SNPstream 12-plex platform in a case-control study of 1,292 idiopathic infertility patients and 480 fertile controls in a Chinese population. Sperm DNA damage levels were detected with the Tdt-mediated dUTP nick end labelling (TUNEL) assay in 450 cases. Fluorescence resonance energy transfer (FRET) and co-immunoprecipitation techniques were employed to determine the effects of functional variants. RESULTS One intronic SNP in MLH1 (rs4647269) and two non-synonymous SNPs in PMS2 (rs1059060, Ser775Asn) and MSH5 (rs2075789, Pro29Ser) seem to be risk factors for the development of azoospermia or oligozoospermia. Meanwhile, we also identified a possible contribution of PMS2 rs1059060 to the risk of male infertility with normal sperm count. Among patients with normal sperm count, MLH1 rs4647269 and PMS2 rs1059060 were associated with increased sperm DNA damage. Functional analysis revealed that the PMS2 rs1059060 can affect the interactions between MLH1 and PMS2. CONCLUSIONS Our results provide evidence supporting the involvement of genetic polymorphisms in MMR genes in the aetiology of male infertility.
Collapse
Affiliation(s)
- Guixiang Ji
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, Nanjing 210029, China.
| | | | | | | | | | | |
Collapse
|
22
|
Abstract
PURPOSE OF REVIEW To highlight the significance of the abnormal DNA repair mechanism in male infertility. RECENT FINDINGS DNA repair defects cause a variety of spermatogenic defects in mouse models. Evidence is accumulating to demonstrate the importance of DNA repair defects in human nonobstructive azoospermia. Epigenetic changes may also play a crucial role in infertility. SUMMARY The DNA in the cell needs to be constantly repaired to ensure fidelity of DNA replication, to maintain genome stability and to ensure propagation of species. The DNA repair and recombination machineries are highly conserved across the species and inactivation of these pathways may lead to replication and recombination errors. This review summarizes the different types of DNA lesions and DNA repair pathways, particularly focusing on highly conserved meiotic regulators, the DNA mismatch repair proteins. Targeted deletions of some of these proteins result in infertility and predisposes to tumor in mutant mouse models. There is evidence for loss of some of these proteins in human male infertility. Because defective DNA repair is associated with a mutator phenotype, the risk of transmission to the offspring of these otherwise infertile men conceived using an assisted reproductive technology needs further evaluation.
Collapse
|
23
|
Carrell DT, Aston KI. The search for SNPs, CNVs, and epigenetic variants associated with the complex disease of male infertility. Syst Biol Reprod Med 2011; 57:17-26. [PMID: 21208142 DOI: 10.3109/19396368.2010.521615] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Understanding the genetic basis of idiopathic male infertility has long been the focus of many researchers. Numerous recent studies have attempted to identify relevant single nucleotide polymorphisms (SNPs) through medical re-sequencing studies in which candidate genes are sequenced in large numbers of cases and controls in the search for risk or causative polymorphisms. Two major characteristics have limited the utility of the re-sequencing studies. First, reported SNPs have only accounted for a small percentage of idiopathic male infertility. Second, SNPs reported to have an association with male infertility based on gene re-sequencing studies often fail validation in follow-up studies. Recent advances in the tools available for genetic studies have enabled interrogation of the entire genome in search of common, and more recently, rare variants. In this review, we discuss the progress of studies on genetic and epigenetic variants of male infertility as well as future directions that we predict will be the most productive in identifying the genetic basis for male factor infertility based on our current state of knowledge in this field as well as lessons learned about the genetic basis for complex diseases from other disease models.
Collapse
Affiliation(s)
- Douglas T Carrell
- Andrology and IVF Laboratories, Department of Surgery, University of Utah School of Medicine, Salt Lake City, Utah 84108, USA.
| | | |
Collapse
|
24
|
Gu A, Ji G, Zhu P, Zhou Y, Fu G, Xia Y, Song L, Wang S, Wang X. Nucleotide excision repair polymorphisms, polycyclic aromatic hydrocarbon exposure, and their effects on sperm deoxyribonucleic acid damage and male factor infertility. Fertil Steril 2010; 94:2620-5.e1-5. [DOI: 10.1016/j.fertnstert.2010.04.059] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2010] [Revised: 04/22/2010] [Accepted: 04/26/2010] [Indexed: 10/19/2022]
|
25
|
Gu A, Ji G, Zhou Y, Long Y, Shi X, Fu G, Wang S, Song L, Wang X. Polymorphisms of nucleotide-excision repair genes may contribute to sperm DNA fragmentation and male infertility. Reprod Biomed Online 2010; 21:602-9. [DOI: 10.1016/j.rbmo.2010.06.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2010] [Revised: 06/11/2010] [Accepted: 06/15/2010] [Indexed: 10/19/2022]
|
26
|
Ji G, Gu A, Zhou Y, Shi X, Xia Y, Long Y, Song L, Wang S, Wang X. Interactions between exposure to environmental polycyclic aromatic hydrocarbons and DNA repair gene polymorphisms on bulky DNA adducts in human sperm. PLoS One 2010; 5. [PMID: 20957144 PMCID: PMC2950145 DOI: 10.1371/journal.pone.0013145] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2010] [Accepted: 09/03/2010] [Indexed: 01/18/2023] Open
Abstract
Background Nucleotide excision repair (NER) and base excision repair (BER) are the primary mechanisms for repair of bulky adducts caused by chemical agents, such as PAHs. It is expected that polymorphisms in NER or BER genes may modulate individual susceptibility to PAHs exposure. Here, we evaluate the effects of PAHs exposure and polymorphisms in NER and BER pathway, alone or combined, on polycyclic aromatic hydrocarbon-DNA (PAH–DNA) adducts in human sperm. Methodology/Principal Findings Sperm PAH-DNA adducts were measured by immunofluorescent assay using flow cytometry in a sample of 465 infertile adults. Polymorphisms of XPA, XPD, ERCC1, XPF, and XRCC1 were determined by polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP) techniques. The PAHs exposure was detected as urinary 1-hydroxypyrene (1-OHP) levels. In multivariate models adjusted for potential confounders, we observed that XRCC1 5′pUTR -T/C, Arg194Trp, Arg399Gln polymorphisms were associated with increased sperm adduct levels. Furthermore, the stratified analysis indicated that adverse effects of XRCC1 Arg194Trp, Arg399Gln polymorphisms on PAH-DNA adducts were detected only in the high PAHs exposure group. Conclusions/Significance These findings provided the first evidence that polymorphisms of XRCC1 may modify sperm PAH-DNA adduct levels and may be useful biomarkers to identify individuals susceptible to DNA damage resulting from PAHs exposure.
Collapse
Affiliation(s)
- Guixiang Ji
- Key Laboratory of Reproductive Medicine, School of Public Health, Institute of Toxicology, Nanjing Medical University, Nanjing, China
| | - Aihua Gu
- Key Laboratory of Reproductive Medicine, School of Public Health, Institute of Toxicology, Nanjing Medical University, Nanjing, China
| | - Yong Zhou
- Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Xiangguo Shi
- Key Laboratory of Reproductive Medicine, School of Public Health, Institute of Toxicology, Nanjing Medical University, Nanjing, China
| | - Yankai Xia
- Key Laboratory of Reproductive Medicine, School of Public Health, Institute of Toxicology, Nanjing Medical University, Nanjing, China
| | - Yan Long
- Key Laboratory of Reproductive Medicine, School of Public Health, Institute of Toxicology, Nanjing Medical University, Nanjing, China
| | - Ling Song
- Key Laboratory of Reproductive Medicine, School of Public Health, Institute of Toxicology, Nanjing Medical University, Nanjing, China
| | - Shoulin Wang
- Key Laboratory of Reproductive Medicine, School of Public Health, Institute of Toxicology, Nanjing Medical University, Nanjing, China
| | - Xinru Wang
- Key Laboratory of Reproductive Medicine, School of Public Health, Institute of Toxicology, Nanjing Medical University, Nanjing, China
- * E-mail:
| |
Collapse
|
27
|
Tamowski S, Aston KI, Carrell DT. The use of transgenic mouse models in the study of male infertility. Syst Biol Reprod Med 2010; 56:260-73. [PMID: 20536325 DOI: 10.3109/19396368.2010.485244] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Over the past few decades with the rapid advances in embryo and embryonic stem cell manipulation techniques, transgenic mouse models have emerged as a powerful tool for the study of gene function and complex diseases including male infertility. In this review we give a brief history of the development of tools for the production of transgenic mouse models. This spans the advances from early pronuclear injection to the use of targeted embryonic stem cells to produce gene targeted, conditional, and inducible knockout mouse models. Lastly we provide a few examples to illustrate the utility of mouse models in the study of male infertility.
Collapse
Affiliation(s)
- Susan Tamowski
- Transgenic and Gene Targeting Mouse Core, University of Utah School of Medicine, Salt Lake City, Utah 84108, USA
| | | | | |
Collapse
|
28
|
Ding X, Zhang J, Fei J, Bian Z, Li Y, Xia Y, Lu C, Song L, Wang S, Wang X. Variants of the EPPIN gene affect the risk of idiopathic male infertility in the Han-Chinese population. Hum Reprod 2010; 25:1657-65. [DOI: 10.1093/humrep/deq119] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
29
|
Aston KI, Krausz C, Laface I, Ruiz-Castané E, Carrell DT. Evaluation of 172 candidate polymorphisms for association with oligozoospermia or azoospermia in a large cohort of men of European descent. Hum Reprod 2010; 25:1383-97. [PMID: 20378615 DOI: 10.1093/humrep/deq081] [Citation(s) in RCA: 114] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND In spite of tremendous efforts by a number of groups, the search for single nucleotide polymorphisms (SNPs) strongly associated with male factor infertility by means of gene re-sequencing studies has yielded few likely candidates. A recent pilot, genome-wide SNP association study (GWAS) identified a list of SNPs associated with oligozoospermia and azoospermia. This is an expanded follow-up study of the SNPs identified by the GWAS as well as other SNPs from previously published gene re-sequencing studies. METHODS On the basis of the pilot GWAS and SNPs with published associations with male infertility, 172 SNPs were genotyped in men with idiopathic azoospermia or oligozoospermia using the Illumina BeadXpress platform. RESULTS Several SNPs were identified or confirmed to be significantly associated with oligozoospermia and/or azoospermia. More importantly, this follow-up study indicates that, at least in Caucasian men, no single common SNP accounts for a significant proportion of spermatogenic failure cases. CONCLUSIONS The associations reported in this study are promising, but much larger genome-wide studies will be necessary to confidently validate these SNPs and identify novel SNPs associated with male infertility.
Collapse
Affiliation(s)
- Kenneth I Aston
- Andrology and IVF Laboratories, University of Utah School of Medicine, Salt Lake City, UT, USA
| | | | | | | | | |
Collapse
|
30
|
Wu C. Overview of developmental and reproductive toxicity research in China: history, funding mechanisms, and frontiers of the research. BIRTH DEFECTS RESEARCH. PART B, DEVELOPMENTAL AND REPRODUCTIVE TOXICOLOGY 2010; 89:9-17. [PMID: 20135688 DOI: 10.1002/bdrb.20231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Reproductive and developmental toxicology (DART) is the discipline that deals with adverse effects on male and female resulting from exposures to harmful chemical and physical agents. DART research in China boasted a long history, but presently has fallen behind the western world in education and research. The funding mechanisms for DART research in China were similar to that for other toxicological disciplines, and the funding has come from research grants and fellowships provided by national, ministerial, and provincial institutions. Finally, the frontiers of DART research in China could be summarized as follows: (1) use of model animals such as the zebrafish and roundworm, and use of cutting-edge techniques such as stem cell culture, as well as transgenic, metabonomic, and virtual screening to study the mechanisms of developmental toxicity for some important toxicants in China; (2) use of model animals and other lower-level sentinel organisms to evaluate and monitor the developmental toxicogical risk of environmental chemicals or pollutants; (3) epidemiological studies of some important reproductive hazards; (4) in-depth studying of the reproductive and developmental toxicity of some important environmental chemicals; and (5) evaluation and study of the reproductive and developmental toxicity of traditional Chinese medicines.
Collapse
Affiliation(s)
- Chunqi Wu
- National Beijing Center for Drug Safety Evaluation and Research, Beijing Institute of Toxicology and Pharmacology, PR China.
| |
Collapse
|
31
|
Variants in the Eppin gene show association with semen quality in Han-Chinese population. Reprod Biomed Online 2010; 20:125-31. [DOI: 10.1016/j.rbmo.2009.10.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2009] [Revised: 04/14/2009] [Accepted: 10/05/2009] [Indexed: 11/18/2022]
|