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Tiwari P, Yadav A, Kaushik M, Dada R. Cancer risk and male Infertility: Unravelling predictive biomarkers and prognostic indicators. Clin Chim Acta 2024; 558:119670. [PMID: 38614420 DOI: 10.1016/j.cca.2024.119670] [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: 01/01/2024] [Revised: 04/08/2024] [Accepted: 04/10/2024] [Indexed: 04/15/2024]
Abstract
In recent years, there has been a global increase in cases of male infertility. There are about 30 million cases of male infertility worldwide and male reproductive health is showing rapid decline in last few decades. It is now recognized as a potential risk factor for developing certain types of cancer, particularly genitourinary malignancies like testicular and prostate cancer. Male infertility is considered a potential indicator of overall health and an early biomarker for cancer. Cases of unexplained male factor infertility have high levels of oxidative stress and oxidative DNA damage and this induces both denovo germ line mutations and epimutations due to build up of 8-hydroxy 2 deoxygunaosine abase which is highly mutagenic and also induces hypomethylation and genomic instability. Consequently, there is growing evidence to explore the various factors contributing to an increased cancer risk. Currently, the available prognostic and predictive biomarkers associated with semen characteristics and cancer risk are limited but gaining significant attention in clinical research for the diagnosis and treatment of elevated cancer risk in the individual and in offspring. The male germ cell being transcriptionally and translationally inert has a highly truncated repair mechanism and has minimal antioxidants and thus most vulnerable to oxidative injury due to environmental factors and unhealthy lifestyle and social habits. Therefore, advancing our understanding requires a thorough evaluation of the pathophysiologic mechanisms at the DNA, RNA, protein, and metabolite levels to identify key biomarkers that may underlie the pathogenesis of male infertility and associated cancer. Advanced methodologies such as genomics, epigenetics, proteomics, transcriptomics, and metabolomics stand at the forefront of cutting-edge approaches for discovering novel biomarkers, spanning from infertility to associated cancer types. Henceforth, in this review, we aim to assess the role and potential of recently identified predictive and prognostic biomarkers, offering insights into the success of assisted reproductive technologies, causes of azoospermia and idiopathic infertility, the impact of integrated holistic approach and lifestyle modifications, and the monitoring of cancer susceptibility, initiation and progression. Comprehending these biomarkers is crucial for providing comprehensive counselling to infertile men and cancer patients, along with their families.
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Affiliation(s)
- Prabhakar Tiwari
- Lab for Molecular Reproduction and Genetics, Department of Anatomy, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India.
| | - Anjali Yadav
- Lab for Molecular Reproduction and Genetics, Department of Anatomy, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Meenakshi Kaushik
- Lab for Molecular Reproduction and Genetics, Department of Anatomy, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Rima Dada
- Lab for Molecular Reproduction and Genetics, Department of Anatomy, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India.
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2
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Babushkina NP, Kucher AN. Regulatory Potential of SNP Markers in Genes of DNA Repair Systems. Mol Biol 2023. [DOI: 10.1134/s002689332301003x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Fang J, Wang X, Sun X, Cui Y, Diao F, Yang X. Congenital absence of the vas deferens with hypospadias or without hypospadias: Phenotypic findings and genetic considerations. Front Genet 2022; 13:1035468. [DOI: 10.3389/fgene.2022.1035468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 10/24/2022] [Indexed: 11/10/2022] Open
Abstract
Congenital absence of the vas deferens (CAVD) is a major cause of obstructive azoospermia. Mutations of CFTR and ADGRG2 cause the majority of CAVD. Despite this, 10%–20% of CAVD patients remain without a clear genetic diagnosis. Herein, the CFTR and ADGRG2 genes were first sequenced using Sanger sequencing in 50 CAVD patients. Whole-exome sequencing (WES) was used to further identify potential novel genetic causes in CAVD with hypospadias. In total, 29 of 50 CAVD patients carried at least one CFTR mutation, but no ADGRG2 mutation was found. 5T was found to be the most frequent variant in our CAVD populations. Seven CAVD patients with hypospadias were further analyzed using WES. No homozygous or compound heterozygous mutations related to disorders of sex development (DSDs) or male infertility were identified by WES. CAVD with hypospadias presented lower testicular volume (9.71 ± 2.14 ml vs. 14.45 ± 2.93 ml, p < 0.001) and higher FSH level (FSH: 7.28 ± 3.91 IU/L vs. 4.24 ± 1.96 IU/L, p = 0.027) than CAVD without hypospadias. It is worth noting that neither CFTR or ADGRG2 mutation nor homozygous or compound heterozygous gene mutations were identified in seven CAVD cases with hypospadias. However, nine heterozygous or hemizygous mutations were selected as potential pathogenic genes in CAVD with hypospadias. In conclusion, CFTR variants, especially 5T, play a major role in the Chinese CAVD population. CAVD with hypospadias shows relatively lower testicular spermatogenesis, suggesting a different genetic basis or pathogenic factor from cystic fibrosis/CAVD or unilateral renal agenesis/CAVD.
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Xie C, Wang W, Tu C, Meng L, Lu G, Lin G, Lu LY, Tan YQ. OUP accepted manuscript. Hum Reprod Update 2022; 28:763-797. [PMID: 35613017 DOI: 10.1093/humupd/dmac024] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 04/18/2022] [Indexed: 11/12/2022] Open
Affiliation(s)
- Chunbo Xie
- Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, China
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
| | - Weili Wang
- Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, China
| | - Chaofeng Tu
- Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, China
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
- NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, Central South University, Changsha, China
- College of Life Sciences, Hunan Normal University, Changsha, China
| | - Lanlan Meng
- Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, China
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
| | - Guangxiu Lu
- Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, China
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
- NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, Central South University, Changsha, China
- College of Life Sciences, Hunan Normal University, Changsha, China
| | - Ge Lin
- Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, China
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
- NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, Central South University, Changsha, China
- College of Life Sciences, Hunan Normal University, Changsha, China
| | - Lin-Yu Lu
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Women's Reproductive Health Laboratory of Zhejiang Province, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, China
| | - Yue-Qiu Tan
- Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, China
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
- NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, Central South University, Changsha, China
- College of Life Sciences, Hunan Normal University, Changsha, China
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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.
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Choudhuri S, Kaur T, Jain S, Sharma C, Asthana S. A review on genotoxicity in connection to infertility and cancer. Chem Biol Interact 2021; 345:109531. [PMID: 34058178 DOI: 10.1016/j.cbi.2021.109531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 04/22/2021] [Accepted: 05/17/2021] [Indexed: 10/21/2022]
Abstract
Genotoxicity has been identified as the main cause of infertility and a variety of cancers. The mechanisms affect the structure, quality of the information or the segregation of DNA and are not inherently correlated with mutagenicity. The concept of genotoxicity, the chemical classes that cause genetic damage and the associated mechanisms of action are discussed here. Hazardous effects of pharmaceuticals, cosmetics, agrochemicals, industrial compounds, food additives, natural toxins and nanomaterials are, in large part, identified by genotoxicity and mutagenicity tests. These are critical and early steps in industrial and regulatory health assessment. Though several in vitro experiments are commonly used and approval by regulatory agencies for commercial licensing of drugs, their accuracy in human predictions for genotoxic and mutagenic effects is frequently questioned. Treatment of real and functional genetic toxicity problems depends in detail on the knowledge of mechanisms of DNA damage in the molecular, subcellular, cellular and tissue or organ system levels. Current strategies for risk assessment of human health need revisions to achieve robust and reliable results for optimizing their effectiveness. Additionally, computerized methods, neo-biomarkers leveraging '-omics' approaches, all of which can provide a convincing genotoxicity evaluation to reduce infertility and cancer risk.
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Affiliation(s)
- Sharmistha Choudhuri
- Department of Biochemistry, R. G. Kar Medical College and Hospital, Kolkata, West Bengal, India
| | - Taruneet Kaur
- Animal Biochemistry Division, National Dairy Research Institute, Karnal, Haryana, India
| | - Sapna Jain
- Multidisciplinary Clinical Translational Research, Translational Health Science and Technology Institute, Faridabad, Haryana, India
| | - Chandresh Sharma
- Multidisciplinary Clinical Translational Research, Translational Health Science and Technology Institute, Faridabad, Haryana, India.
| | - Shailendra Asthana
- Non-Communicable Disease, Translational Health Science and Technology Institute, Faridabad, Haryana, India.
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Cerván-Martín M, Castilla JA, Palomino-Morales RJ, Carmona FD. Genetic Landscape of Nonobstructive Azoospermia and New Perspectives for the Clinic. J Clin Med 2020; 9:jcm9020300. [PMID: 31973052 PMCID: PMC7074441 DOI: 10.3390/jcm9020300] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 01/15/2020] [Accepted: 01/16/2020] [Indexed: 02/07/2023] Open
Abstract
Nonobstructive azoospermia (NOA) represents the most severe expression of male infertility, involving around 1% of the male population and 10% of infertile men. This condition is characterised by the inability of the testis to produce sperm cells, and it is considered to have an important genetic component. During the last two decades, different genetic anomalies, including microdeletions of the Y chromosome, karyotype defects, and missense mutations in genes involved in the reproductive function, have been described as the primary cause of NOA in many infertile men. However, these alterations only explain around 25% of azoospermic cases, with the remaining patients showing an idiopathic origin. Recent studies clearly suggest that the so-called idiopathic NOA has a complex aetiology with a polygenic inheritance, which may alter the spermatogenic process. Although we are far from a complete understanding of the molecular mechanisms underlying NOA, the use of the new technologies for genetic analysis has enabled a considerable increase in knowledge during the last years. In this review, we will provide a comprehensive and updated overview of the genetic basis of NOA, with a special focus on the possible application of the recent insights in clinical practice.
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Affiliation(s)
- Miriam Cerván-Martín
- Departamento de Genética e Instituto de Biotecnología, Universidad de Granada, Centro de Investigación Biomédica (CIBM), Parque Tecnológico Ciencias de la Salud, Av. del Conocimiento, s/n, 18016 Granada, Spain;
- Instituto de Investigación Biosanitaria ibs.GRANADA, Av. de Madrid, 15, Pabellón de Consultas Externas 2, 2ª Planta, 18012 Granada, Spain; (J.A.C.); (R.J.P.-M.)
| | - José A. Castilla
- Instituto de Investigación Biosanitaria ibs.GRANADA, Av. de Madrid, 15, Pabellón de Consultas Externas 2, 2ª Planta, 18012 Granada, Spain; (J.A.C.); (R.J.P.-M.)
- Unidad de Reproducción, UGC Obstetricia y Ginecología, HU Virgen de las Nieves, Av. de las Fuerzas Armadas 2, 18014 Granada, Spain
- CEIFER Biobanco—NextClinics, Calle Maestro Bretón 1, 18004 Granada, Spain
| | - Rogelio J. Palomino-Morales
- Instituto de Investigación Biosanitaria ibs.GRANADA, Av. de Madrid, 15, Pabellón de Consultas Externas 2, 2ª Planta, 18012 Granada, Spain; (J.A.C.); (R.J.P.-M.)
- Departamento de Bioquímica y Biología Molecular I, Universidad de Granada, Facultad de Ciencias, Av. de Fuente Nueva s/n, 18071 Granada, Spain
| | - F. David Carmona
- Departamento de Genética e Instituto de Biotecnología, Universidad de Granada, Centro de Investigación Biomédica (CIBM), Parque Tecnológico Ciencias de la Salud, Av. del Conocimiento, s/n, 18016 Granada, Spain;
- Instituto de Investigación Biosanitaria ibs.GRANADA, Av. de Madrid, 15, Pabellón de Consultas Externas 2, 2ª Planta, 18012 Granada, Spain; (J.A.C.); (R.J.P.-M.)
- Correspondence: ; Tel.: +34-958-241-000 (ext 20170)
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8
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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.
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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.
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Zaki-Dizaji M, Akrami SM, Abolhassani H, Rezaei N, Aghamohammadi A. Ataxia telangiectasia syndrome: moonlighting ATM. Expert Rev Clin Immunol 2017; 13:1155-1172. [PMID: 29034753 DOI: 10.1080/1744666x.2017.1392856] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
INTRODUCTION Ataxia-telangiectasia (A-T) a multisystem disorder primarily characterized by cerebellar degeneration, telangiectasia, immunodeficiency, cancer susceptibility and radiation sensitivity. Identification of the gene defective in this syndrome, ataxia-telangiectasia mutated gene (ATM), and further characterization of the disorder together with a greater insight into the function of the ATM protein have expanded our knowledge about the molecular pathogenesis of this disease. Area covered: In this review, we have attempted to summarize the different roles of ATM signaling that have provided new insights into the diverse clinical phenotypes exhibited by A-T patients. Expert commentary: ATM, in addition to DNA repair response, is involved in many cytoplasmic roles that explain diverse phenotypes of A-T patients. It seems accumulation of DNA damage, persistent DNA damage response signaling, and chronic oxidative stress are the main players in the pathogenesis of this disease.
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Affiliation(s)
- Majid Zaki-Dizaji
- a Department of Medical Genetics, School of Medicine , Tehran University of Medical Sciences , Tehran , Iran.,b Research Center for Immunodeficiencies, Children's Medical Center , Tehran University of Medical Science , Tehran , Iran
| | - Seyed Mohammad Akrami
- a Department of Medical Genetics, School of Medicine , Tehran University of Medical Sciences , Tehran , Iran
| | - Hassan Abolhassani
- b Research Center for Immunodeficiencies, Children's Medical Center , Tehran University of Medical Science , Tehran , Iran.,c Division of Clinical Immunology, Department of Laboratory Medicine , Karolinska Institute at Karolinska University Hospital Huddinge , Stockholm , Sweden.,d Primary Immunodeficiency Diseases Network (PIDNet ), Universal Scientific Education and Research Network (USERN) , Stockholm , Sweden
| | - Nima Rezaei
- b Research Center for Immunodeficiencies, Children's Medical Center , Tehran University of Medical Science , Tehran , Iran.,e Department of Immunology and Biology, School of Medicine , Tehran University of Medical Sciences , Tehran , Iran.,f Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA) , Universal Scientific Education and Research Network (USERN) , Tehran , Iran
| | - Asghar Aghamohammadi
- b Research Center for Immunodeficiencies, Children's Medical Center , Tehran University of Medical Science , Tehran , Iran
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Xu J, Jiang L, Yu W, Guo H, Zhang H, Wei D, Liang L, Feng K, Song X, Liu Q, Song B, Hao H, Zhang Y, Zhang C. A novel functional variant in Wilms' Tumor 1 (WT1) is associated with idiopathic non-obstructive azoospermia. Mol Reprod Dev 2017; 84:222-228. [PMID: 27990711 DOI: 10.1002/mrd.22768] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 12/13/2016] [Indexed: 12/12/2022]
Abstract
Idiopathic nonobstructive azoospermia (INOA) is one of the most severe forms of male infertility, yet its pathophysiology remains unclear. WT1 (Wilms' tumor 1) regulates the polarity of Sertoli cells, thereby playing a critical, indirect role in spermatogenesis. Here, we evaluated WT1 gene variation associates with INOA by assessing its promoter and coding regions in 200 patients diagnosed with INOA and 200 proven-fertile men. Three novel variants in the WT1 coding region were detected only in INOA patients, including two synonymous variants and one missense variant, p.Phe435Leu (p.F435L), which was predicted to be deleterious to protein function. The results of dual luciferase reporter showed that the WT1 p.F435L variant decreases transcription of COL4A1 and WNT4 promoters through a dominant-negative effect. Furthermore, chromatin immunoprecipitation assays revealed that COL4A1 and WNT4 promoter is directly bound by wild-type WT1 protein, but not the p.F435L WT1 variant. Thus, we identified a novel functional variant of WT1 functionally associated with INOA. Mol. Reprod. Dev. 84: 222-228, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Jin Xu
- Reproductive Medical Center, The Henan Province People's Hospital, Zhengzhou, China
| | - Lile Jiang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wenzhu Yu
- Reproductive Medical Center, The Henan Province People's Hospital, Zhengzhou, China
| | - Haibin Guo
- Reproductive Medical Center, The Henan Province People's Hospital, Zhengzhou, China
| | - Helong Zhang
- Reproductive Medical Center, The Henan Province People's Hospital, Zhengzhou, China
| | - Duo Wei
- Reproductive Medical Center, The Henan Province People's Hospital, Zhengzhou, China
| | - Lingling Liang
- Reproductive Medical Center, The Henan Province People's Hospital, Zhengzhou, China
| | - Ke Feng
- Reproductive Medical Center, The Henan Province People's Hospital, Zhengzhou, China
| | - Xiaobing Song
- Reproductive Medical Center, The Henan Province People's Hospital, Zhengzhou, China
| | - Qi Liu
- Reproductive Medical Center, The Henan Province People's Hospital, Zhengzhou, China
| | - Bingbing Song
- Reproductive Medical Center, The Henan Province People's Hospital, Zhengzhou, China
| | - Haoying Hao
- Reproductive Medical Center, The Henan Province People's Hospital, Zhengzhou, China
| | - Ying Zhang
- Reproductive Medical Center, The Henan Province People's Hospital, Zhengzhou, China
| | - Cuilian Zhang
- Reproductive Medical Center, The Henan Province People's Hospital, Zhengzhou, China
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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
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Mou L, Zhang Q, Diao R, Cai Z, Gui Y. A functional variant in the UBE2B gene promoter is associated with idiopathic azoospermia. Reprod Biol Endocrinol 2015; 13:79. [PMID: 26223869 PMCID: PMC4520152 DOI: 10.1186/s12958-015-0074-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND A variety of genetic variants lead to abnormal human spermatogenesis. The ubiquitin-conjugating enzyme E2B (UBE2B) plays a significant role in spermatogenesis as Ube2b-knockout male mice are infertile. METHODS In this study, we sequenced the exon and promoter region of UBE2B in 776 patients diagnosed with idiopathic azoospermia (IA) and 709 proven fertile men to examine whether UBE2B is involved in the pathogenesis of IA. RESULTS In the exon region, two novel synonymous variants were detected in the patient group. In the promoter region, four known variants and four novel variants were identified in the patient group. Of the novel variants in the promoter region, three were located at the binding site of specificity protein 1 (SP1) transcription factor analyzed by TRANSFAC software. Luciferase assays demonstrated that one heterozygous variant (Chr5.133706925 A > G) inhibited the transcriptional regulation activity of SP1. CONCLUSIONS A novel variant (Chr5.133706925 A > G) residing in the UBE2B gene promoter region confers a high risk for IA in a Chinese population. These results support a role for UBE2B in the pathogenesis of IA.
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Affiliation(s)
- Lisha Mou
- Shenzhen Domesticated Organ Medical Engineering Research and Development Center, First Affiliated Hospital of Shenzhen University, Shenzhen, China.
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Institute of Urology, Peking University Shenzhen Hospital, Biomedical Research Institute, Shenzhen PKU-HKUST Medical Center, Shenzhen, China.
| | - Qiang Zhang
- Shenzhen Domesticated Organ Medical Engineering Research and Development Center, First Affiliated Hospital of Shenzhen University, Shenzhen, China.
- The people's hospital of Ankang, Shanxin, China.
| | - Ruiying Diao
- Shenzhen Domesticated Organ Medical Engineering Research and Development Center, First Affiliated Hospital of Shenzhen University, Shenzhen, China.
| | - Zhiming Cai
- Shenzhen Domesticated Organ Medical Engineering Research and Development Center, First Affiliated Hospital of Shenzhen University, Shenzhen, China.
| | - Yaoting Gui
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Institute of Urology, Peking University Shenzhen Hospital, Biomedical Research Institute, Shenzhen PKU-HKUST Medical Center, Shenzhen, China.
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Effect of single nucleotide polymorphism Rs189037 in ATM gene on risk of lung cancer in Chinese: a case-control study. PLoS One 2014; 9:e115845. [PMID: 25541996 PMCID: PMC4277362 DOI: 10.1371/journal.pone.0115845] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 11/29/2014] [Indexed: 01/13/2023] Open
Abstract
Background Accumulated evidence has indicated that ataxia-telangiectasia mutated (ATM) gene polymorphisms are closely related to lung cancer. We aimed to explore the prognostic value of rs189037 (G>A), one of ATM single nucleotide polymorphisms (SNPs), and detect whether it involves in the risk of lung cancer in Chinese Han people. Methods In this hospital-based matched case-control study, 852 lung cancer patients and 852 healthy controls have been put into comparison to analyze the association between rs189037 and lung cancer risk in Chinese. The single nucleotide polymorphisms were determined by TaqMan real-time PCR and we used SPSS software to perform the statistical analyses. Results Individuals carrying variant AA genotype of rs189037 had higher lung cancer risk (adjusted OR: 1.56) than those carrying GG genotype. After analyzing data respectively from different groups divided by genders and smoking status, we observed that the risk effect of AA genotype on the lung cancer was significant in females, non-smokers and female non-smokers, as well as the risk effect of GA genotype in male smokers. Compared with non-smokers carrying GG genotype, smokers carrying at least one A allele had higher risk of developing lung cancer than those with GG genotype (adjusted OR: 3.52 vs. adjusted OR: 2.53). Conclusions This study suggested that rs189037 (G>A) polymorphism is associated with lung cancer risk in Chinese Han population. AA genotype and A allele may be dangerous lung cancer signals in Chinese and make contribution to diagnostic and treatment value.
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Chaudhary MW, Al-Baradie RS. Ataxia-telangiectasia: future prospects. APPLICATION OF CLINICAL GENETICS 2014; 7:159-67. [PMID: 25258552 PMCID: PMC4173637 DOI: 10.2147/tacg.s35759] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ataxia-telangiectasia (A-T) is an autosomal recessive multi-system disorder caused by mutation in the ataxia-telangiectasia mutated gene (ATM). ATM is a large serine/threonine protein kinase, a member of the phosphoinositide 3-kinase-related protein kinase (PIKK) family whose best-studied function is as master controller of signal transduction for the DNA damage response (DDR) in the event of double strand breaks (DSBs). The DDR rapidly recognizes DNA lesions and initiates the appropriate cellular programs to maintain genome integrity. This includes the coordination of cell-cycle checkpoints, transcription, translation, DNA repair, metabolism, and cell fate decisions, such as apoptosis or senescence. DSBs can be generated by exposure to ionizing radiation (IR) or various chemical compounds, such as topoisomerase inhibitors, or can be part of programmed generation and repair of DSBs via cellular enzymes needed for the generation of the antibody repertoire as well as the maturation of germ cells. AT patients have immunodeficiency, and are sterile with gonadal dysgenesis as a result of defect in meiotic recombination. In the cells of nervous system ATM has additional role in vesicle dynamics as well as in the maintenance of the epigenetic code of histone modifications. Moderate levels of ATM are associated with prolonged lifespan through resistance to oxidative stress. ATM inhibitors are being viewed as potential radiosensitizers as part of cancer radiotherapy. Though there is no cure for the disease at present, glucocorticoids have been shown to induce alternate splicing site in the gene for ATM partly restoring its activity, but their most effective timing in the disease natural history is not yet known. Gene therapy is promising but large size of the gene makes it technically difficult to be delivered across the blood-brain barrier at present. As of now, apart from glucocorticoids, use of histone deacetylase inhibitors/EZH2 to minimize effect of the absence of ATM, looks more promising.
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Affiliation(s)
- Mohammed Wajid Chaudhary
- Pediatric Neurology, Neurosciences Centre, King Fahad Specialist Hospital, Dammam, Kingdom of Saudi Arabia
| | - Raidah Saleem Al-Baradie
- Pediatric Neurology, Neurosciences Centre, King Fahad Specialist Hospital, Dammam, Kingdom of Saudi Arabia
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Petkova R, Chelenkova P, Georgieva E, Chakarov S. What's Your Poison? Impact of Individual Repair Capacity on the Outcomes of Genotoxic Therapies in Cancer. Part I—Role of Individual Repair Capacity in the Constitution of Risk for Late-Onset Multifactorial Disease. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.5504/bbeq.2013.0097] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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