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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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Shacfe G, Turko R, Syed HH, Masoud I, Tahmaz Y, Samhan LM, Alkattan K, Shafqat A, Yaqinuddin A. A DNA Methylation Perspective on Infertility. Genes (Basel) 2023; 14:2132. [PMID: 38136954 PMCID: PMC10743303 DOI: 10.3390/genes14122132] [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: 11/04/2023] [Revised: 11/24/2023] [Accepted: 11/25/2023] [Indexed: 12/24/2023] Open
Abstract
Infertility affects a significant number of couples worldwide and its incidence is increasing. While assisted reproductive technologies (ART) have revolutionized the treatment landscape of infertility, a significant number of couples present with an idiopathic cause for their infertility, hindering effective management. Profiling the genome and transcriptome of infertile men and women has revealed abnormal gene expression. Epigenetic modifications, which comprise dynamic processes that can transduce environmental signals into gene expression changes, may explain these findings. Indeed, aberrant DNA methylation has been widely characterized as a cause of abnormal sperm and oocyte gene expression with potentially deleterious consequences on fertilization and pregnancy outcomes. This review aims to provide a concise overview of male and female infertility through the lens of DNA methylation alterations.
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Affiliation(s)
| | | | | | | | | | | | | | - Areez Shafqat
- College of Medicine, Alfaisal University, Riyadh 11533, Saudi Arabia; (G.S.); (R.T.); (H.H.S.); (I.M.); (Y.T.); (L.M.S.); (K.A.); (A.Y.)
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Wagner AO, Turk A, Kunej T. Towards a Multi-Omics of Male Infertility. World J Mens Health 2023; 41:272-288. [PMID: 36649926 PMCID: PMC10042660 DOI: 10.5534/wjmh.220186] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 10/15/2022] [Indexed: 01/17/2023] Open
Abstract
Infertility is a common problem affecting one in six couples and in 30% of infertile couples, the male factor is a major cause. A large number of genes are involved in spermatogenesis and a significant proportion of male infertility phenotypes are of genetic origin. Studies on infertility have so far primarily focused on chromosomal abnormalities and sequence variants in protein-coding genes and have identified a large number of disease-associated genes. However, it has been shown that a multitude of factors across various omics levels also contribute to infertility phenotypes. The complexity of male infertility has led to the understanding that an integrated, multi-omics analysis may be optimal for unravelling this disease. While there is a vast array of different factors across omics levels associated with infertility, the present review focuses on known factors from the genomics, epigenomics, transcriptomics, proteomics, metabolomics, glycomics, lipidomics, miRNomics, and integrated omics levels. These include: repeat expansions in AR, POLG, ATXN1, DMPK, and SHBG, multiple SNPs, copy number variants in the AZF region, disregulated miRNAs, altered H3K9 methylation, differential MTHFR, MEG3, PEG1, and LIT1 methylation, altered protamine ratios and protein hypo/hyperphosphorylation. This integrative review presents a step towards a multi-omics approach to understanding the complex etiology of male infertility. Currently only a few genetic factors, namely chromosomal abnormalities and Y chromosome microdeletions, are routinely tested in infertile men undergoing intracytoplasmic sperm injection. A multi-omics approach to understanding infertility phenotypes may yield a more holistic view of the disease and contribute to the development of improved screening methods and treatment options. Therefore, beside discovering as of yet unknown genetic causes of infertility, integrating multiple fields of study could yield valuable contributions to the understanding of disease development. Future multi-omics studies will enable to synthesise fragmented information and facilitate biomarker discovery and treatments in male infertility.
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Affiliation(s)
- Ana Ogrinc Wagner
- Department of Animal Science, Biotechnical Faculty, University of Ljubljana, Domžale, Slovenia
| | - Aleksander Turk
- Department of Animal Science, Biotechnical Faculty, University of Ljubljana, Domžale, Slovenia
| | - Tanja Kunej
- Department of Animal Science, Biotechnical Faculty, University of Ljubljana, Domžale, Slovenia.
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Beeram H, Siddamalla S, Tumu VR, KV V, Vidala A, Deenadayal M, Sisinthy S, Bhanoori M. Genetic Variants of VDR and PGC-1α Are Not Associated with the Risk of Endometriosis in Indian Women. DNA Cell Biol 2022; 41:987-995. [DOI: 10.1089/dna.2022.0350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Himabindu Beeram
- Department of Biochemistry, Osmania University, Hyderabad, India
| | | | | | - Veena KV
- Department of Biochemistry, Osmania University, Hyderabad, India
| | - Akanksha Vidala
- Department of Biochemistry, Osmania University, Hyderabad, India
| | - Mamata Deenadayal
- Infertility Institute and Research Centre (IIRC), Secunderabad, India
| | - Shivaji Sisinthy
- Centre for Cellular and Molecular Biology (CCMB), Hyderabad, India
- Brien Holden Eye Research Centre, LV Prasad Eye Institute, Hyderabad, India
| | - Manjula Bhanoori
- Department of Biochemistry, Osmania University, Hyderabad, India
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Veena KV, Siddamalla S, Deenadayal M, Sisinthy S, Bhanoori M. Histone deacetylase 1, Sirtuin 1, and Sirtuin 3 single-nucleotide polymorphisms and the risk of endometriosis in South Indian women. J OBSTET GYNAECOL 2022; 42:3230-3235. [PMID: 35980861 DOI: 10.1080/01443615.2022.2109955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The aim of the study was to investigate the association between Histone deacetylase 1 (HDAC1), Sirtuin1 (SIRT1), and Sirtuin3 (SIRT3) single-nucleotide polymorphisms (SNPs) and risk of endometriosis in South Indian women. A total of 300 subjects were recruited in this case-control study comprising 150 affected women and 150 women with no evidence of disease. All the subjects were of South Indian origin. The genotyping of HDAC1, SIRT1, and SIRT3 SNPs (rs1741981T/C, rs144124002A/G, and rs536715G/A) was carried out on DNA from subjects by PCR-RFLP and sequencing analysis. The genotype (p = .00782) and allele (p = .02561) frequencies of the HDAC1 rs1741981 polymorphism showed significant difference between cases and controls. In contrast, SIRT1 (rs144124002) and SIRT3 (rs536715) SNPs did not show significant association with the disease. The HDAC1 polymorphism may constitute a heritable risk factor for endometriosis in South Indian women. To date, there is no reported study on the association of polymorphisms in HDAC1, SIRT1, and SIRT3 with endometriosis risk. Impact StatementWhat is already known on this subject? Endometriosis is a benign gynaecological disease characterised by the implantation of functional endometrial tissue at ectopic positions, associated with an increased risk of malignant transformation. Epigenetic mechanisms are essential for normal development and maintenance of tissue-specific gene expression patterns. Histone modification, including deacetylation of lysine residues by HDACs, is a key epigenetic mechanism of gene expression regulation in endometriosis, therefore genetic variation in HDACs causing epigenetic control defects might lead to disease susceptibility.What do the results of this study add? Our study shows that the HDAC1 SNP is significantly associated with endometriosis in South Indian women, whereas the SNPs of SIRT1 and SIRT3 could not show any association with the disease.What are the implications of these findings for clinical practice and/or further research? The polymorphism of HDAC1 rs1741981 could be used as an important marker of genetic susceptibility to endometriosis development. Analysis of this SNP might help to identify patients at high risk for disease outcome.
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Affiliation(s)
- K V Veena
- Department of Biochemistry, Osmania University, Hyderabad, India
| | | | - Mamata Deenadayal
- Infertility Institute and Research Centre (IIRC), Secundrabad, India
| | - Shivaji Sisinthy
- Centre for Cellular and Molecular Biology (CCMB), Hyderabad, India
| | - Manjula Bhanoori
- Department of Biochemistry, Osmania University, Hyderabad, India
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More A, Gajbe U, Olatunji O, Singh B. MTHFR Gene-Polymorphism and Infertile Men in Indian Population: A Systematic Literature Review. Cureus 2022; 14:e27075. [PMID: 36000135 PMCID: PMC9390949 DOI: 10.7759/cureus.27075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 07/20/2022] [Indexed: 11/05/2022] Open
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Rotondo JC, Lanzillotti C, Mazziotta C, Tognon M, Martini F. Epigenetics of Male Infertility: The Role of DNA Methylation. Front Cell Dev Biol 2021; 9:689624. [PMID: 34368137 PMCID: PMC8339558 DOI: 10.3389/fcell.2021.689624] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 06/17/2021] [Indexed: 12/18/2022] Open
Abstract
In recent years, a number of studies focused on the role of epigenetics, including DNA methylation, in spermatogenesis and male infertility. We aimed to provide an overview of the knowledge concerning the gene and genome methylation and its regulation during spermatogenesis, specifically in the context of male infertility etiopathogenesis. Overall, the findings support the hypothesis that sperm DNA methylation is associated with sperm alterations and infertility. Several genes have been found to be differentially methylated in relation to impaired spermatogenesis and/or reproductive dysfunction. Particularly, DNA methylation defects of MEST and H19 within imprinted genes and MTHFR within non-imprinted genes have been repeatedly linked with male infertility. A deep knowledge of sperm DNA methylation status in association with reduced reproductive potential could improve the development of novel diagnostic tools for this disease. Further studies are needed to better elucidate the mechanisms affecting methylation in sperm and their impact on male infertility.
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Affiliation(s)
- John Charles Rotondo
- Laboratories of Cell Biology and Molecular Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Carmen Lanzillotti
- Laboratories of Cell Biology and Molecular Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Chiara Mazziotta
- Laboratories of Cell Biology and Molecular Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Mauro Tognon
- Laboratories of Cell Biology and Molecular Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Fernanda Martini
- Laboratories of Cell Biology and Molecular Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
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Mahbouli S, Dupont C, Elfassy Y, Lameignère E, Levy R. Exploring the potential impact of nutritionally actionable genetic polymorphisms on idiopathic male infertility: a review of current evidence. Asian J Androl 2021; 23:441-449. [PMID: 33533736 PMCID: PMC8451495 DOI: 10.4103/aja.aja_87_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Infertility affects about 15% of the world's population. In 40%–50% of infertile couples, a male factor underlies the problem, but in about 50% of these cases, the etiology of male infertility remains unexplained. Some clinical data show that lifestyle interventions may contribute to male reproductive health. Cessation of unhealthy habits is suggested for preserving male fertility; there is growing evidence that most preexisting comorbidities, such as obesity and metabolic syndrome, are highly likely to have an impact on male fertility. The analysis of genetic polymorphisms implicated in metabolic activity represents one of the most exciting areas in the study of genetic causes of male infertility. Although these polymorphisms are not directly connected with male infertility, they may have a role in specific conditions associated with it, that is, metabolic disorders and oxidative stress pathway genes that are potentially associated with an increased risk of male infertility due to DNA and cell membrane damage. Some studies have examined the impact of individual genetic differences and gene-diet interactions on male infertility, but their results have not been synthesized. We review the current research to identify genetic variants that could be tested to improve the chances of conceiving spontaneously through personalized diet and/or oral vitamin and mineral supplementation, by examining the science of genetic modifiers of dietary factors that affect nutritional status and male fertility.
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Affiliation(s)
- Sinda Mahbouli
- FabLife, 104 Avenue Albert 1er, Rueil-Malmaison 92500, France
| | - Charlotte Dupont
- Sorbonne Université, Saint Antoine Research Centre, INSERM Genetic and Acquired Lipodystrophies Team, Reproductive Biology and CECOS, AP-HP, Tenon Hospital, Paris F-75020, France.,Reproductive Biology and CECOS, AP-HP, Tenon Hospital, Paris F-75020, France
| | - Yaelle Elfassy
- Reproductive Biology and CECOS, AP-HP, Tenon Hospital, Paris F-75020, France
| | - Eric Lameignère
- FabLife, 104 Avenue Albert 1er, Rueil-Malmaison 92500, France
| | - Rachel Levy
- Sorbonne Université, Saint Antoine Research Centre, INSERM Genetic and Acquired Lipodystrophies Team, Reproductive Biology and CECOS, AP-HP, Tenon Hospital, Paris F-75020, France.,Reproductive Biology and CECOS, AP-HP, Tenon Hospital, Paris F-75020, France
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Abstract
The incidence of congenital hypogonadotropic hypogonadism (HH) is approximately 1-10 in 100,000 live births. Known syndromes, such as Kallman syndrome, caused by a mutation in the KAL-1 gene, and other genes listed in the Online Mendelian Inheritance in Man database, account for 2/3 of the cases. The rest of these cases where there is no known genetic cause for HH are termed idiopathic. In this editorial, I describe each of the articles in the Special Issue on Hypogonadotropic Hypogonadism, with a focus on new genes that might be included in future screens of idiopathic patients.
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Affiliation(s)
- Deborah J Good
- Department of Human Nutrition, Foods, and Exercise, 1981 Kraft Drive (0913), Integrated Life Sciences Building, Virginia Tech, Blacksburg, VA, 24060, USA.
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Ait Boujmia OK, Nadifi S, Dehbi H, Lamchahab M, Quessar A. The influence of DNMT3A and DNMT3B gene polymorphisms on acute myeloid leukemia risk in a Moroccan population. Curr Res Transl Med 2020; 68:191-195. [PMID: 32912818 DOI: 10.1016/j.retram.2020.08.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 05/22/2020] [Accepted: 08/15/2020] [Indexed: 01/04/2023]
Abstract
Acute myeloid leukemia (AML) is a very complex disease that is linked to environmental, genetic and epigenetic factors. Several Studies have found that aberrations in DNA methylation process play a crucial role in leukemogenesis. The aim of this case control study was to evaluate the association between rs1569686, rs2424913 polymorphisms located in DNMT3B gene and rs7590760 polymorphism located in DNMT3A gene and AML risk in a Moroccan population. MATERIALS AND METHODS The present study was conducted in 142 cases of AML and 179 control subjects from the Moroccan population. Genomic DNA was isolated from whole blood samples by salting-out method and the genotype of the three polymorphisms was determined by the PCR-RFLP technique. RESULTS The study results indicated that rs1569686 polymorphism was significantly associated with the risk of AML in dominant model (OR=1.72, 95 % CI 1.01-2.95, P=0.04), but not in recessive model. In stratified analysis by gender, statistically significant association between the rs2424913 CT genotype and AML was found among males (OR=2.05, 95 % CI 1.00-4.19, P=0.04). Similarly, the rs1569686 TT genotype was associated with an increase risk of AML (OR=3.21, 95 % CI 1.15-8. 98, P=0.02), this association was also found under dominant genetic model (OR=2.47, 95 % CI 1.07-5. 67, P=0.03) among males. However, the rs2424913 polymorphism was not associated with AML. CONCLUSION Our findings have shown that rs1569686 polymorphism might be a risk factor of AML in males. While, the rs2424913 polymorphism was not associated with AML. Further studies with a large sample size are needed to validate our results.
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Affiliation(s)
- Oum Kaltoum Ait Boujmia
- Laboratory of Genetics and Molecular Pathology, Medical School, University Hassan II, Casablanca, Morocco; Department of Onco-Hematology, Ibn Rochd University Hospital, Casablanca, Morocco.
| | - Sellama Nadifi
- Laboratory of Genetics and Molecular Pathology, Medical School, University Hassan II, Casablanca, Morocco; Department of Onco-Hematology, Ibn Rochd University Hospital, Casablanca, Morocco
| | - Hind Dehbi
- Laboratory of Genetics and Molecular Pathology, Medical School, University Hassan II, Casablanca, Morocco; Department of Onco-Hematology, Ibn Rochd University Hospital, Casablanca, Morocco
| | - Mouna Lamchahab
- Laboratory of Genetics and Molecular Pathology, Medical School, University Hassan II, Casablanca, Morocco; Department of Onco-Hematology, Ibn Rochd University Hospital, Casablanca, Morocco
| | - Asma Quessar
- Laboratory of Genetics and Molecular Pathology, Medical School, University Hassan II, Casablanca, Morocco; Department of Onco-Hematology, Ibn Rochd University Hospital, Casablanca, Morocco
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Kiefer H, Perrier JP. DNA methylation in bull spermatozoa: evolutionary impacts, interindividual variability, and contribution to the embryo. CANADIAN JOURNAL OF ANIMAL SCIENCE 2020. [DOI: 10.1139/cjas-2019-0071] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The DNA methylome of spermatozoa results from a unique epigenetic reprogramming crucial for chromatin compaction and the protection of the paternal genetic heritage. Although bull semen is widely used for artificial insemination (AI), little is known about the sperm epigenome in cattle. The purpose of this review is to synthetize recent work on the bull sperm methylome in light of the knowledge accumulated in humans and model species. We will address sperm-specific DNA methylation features and their potential evolutionary impacts, with particular emphasis on hypomethylated regions and repetitive elements. We will review recent examples of interindividual variability and intra-individual plasticity of the bull sperm methylome as related to fertility and age, respectively. Finally, we will address paternal methylome reprogramming after fertilization, as well as the mechanisms potentially involved in epigenetic inheritance, and provide some examples of disturbances that alter the dynamics of reprogramming in cattle. Because the selection of AI bulls is closely based on their genotypes, we will also discuss the complex interplay between sequence polymorphism and DNA methylation, which represents both a difficulty in addressing the role of DNA methylation in shaping phenotypes and an opportunity to better understand genome plasticity.
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Affiliation(s)
- Hélène Kiefer
- UMR BDR, INRA, ENVA, Université Paris Saclay, 78350 Jouy en-Josas, France
- UMR BDR, INRA, ENVA, Université Paris Saclay, 78350 Jouy en-Josas, France
| | - Jean-Philippe Perrier
- UMR BDR, INRA, ENVA, Université Paris Saclay, 78350 Jouy en-Josas, France
- UMR BDR, INRA, ENVA, Université Paris Saclay, 78350 Jouy en-Josas, France
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Zhu W, Du J, Chen Q, Zhang Z, Wu B, Xu J, Li T, Bi Y, Shi H, Li R. Association of UHRF1 gene polymorphisms with oligospermia in Chinese males. J Assist Reprod Genet 2019; 36:2563-2573. [PMID: 31802345 DOI: 10.1007/s10815-019-01614-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 10/14/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND UHRF1 plays an important role in maintaining DNA methylation patterns during spermatogenesis. This study was performed to evaluate the association between UHRF1 gene variations and infertility in males with oligozoospermia in a Chinese population. METHODS In this case-control study of 735 Chinese men, single-nucleotide polymorphism (SNP) genotypes and alleles in the UHRF1 gene were assessed by direct sequencing. The effects of the mutations on UHRF1 transcription were investigated using a dual-luciferase reporter gene assay. RESULTS We identified 24 SNPs, including nine SNPs in the promoter region, three in the 5' untranslated region, five in introns, and seven in exons. Interestingly, the genotype frequencies of SNP rs2656927 (P = 0.014) and rs8103849 (P < 0.001) significantly differed between men with oligozoospermia in case group 1 and normozoospermic men. Moreover, four variants (three were novel) were detected only in the patient group, with two in introns and the others in the promoter region. The results of the luciferase assay showed that the -1615C>T-C and -1562A>G-A alleles increased luciferase activity compared with the -1615C>T-T and -1562A>G-G alleles. CONCLUSIONS We detected two SNPs in the UHRF1 gene showing a significant difference between the case and control groups. Two screened SNPs affected UHRF1 promoter activity, improving the understanding of the pathophysiology of oligozoospermia.
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Affiliation(s)
- Weiqiang Zhu
- NHC Key Laboratory of Birth Defects and Reproductive Health, Chongqing Population and Family Planning Science and Technology Research Institute, Chongqing, China.,NHC Key Laboratory of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Pharmacy School, Fudan University, 2140 Xietu Road, Shanghai, 200032, China
| | - Jing Du
- NHC Key Laboratory of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Pharmacy School, Fudan University, 2140 Xietu Road, Shanghai, 200032, China
| | - Qing Chen
- NHC Key Laboratory of Birth Defects and Reproductive Health, Chongqing Population and Family Planning Science and Technology Research Institute, Chongqing, China
| | - Zhaofeng Zhang
- NHC Key Laboratory of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Pharmacy School, Fudan University, 2140 Xietu Road, Shanghai, 200032, China
| | - Bin Wu
- NHC Key Laboratory of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Pharmacy School, Fudan University, 2140 Xietu Road, Shanghai, 200032, China
| | - Jianhua Xu
- NHC Key Laboratory of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Pharmacy School, Fudan University, 2140 Xietu Road, Shanghai, 200032, China
| | - Tianqi Li
- NHC Key Laboratory of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Pharmacy School, Fudan University, 2140 Xietu Road, Shanghai, 200032, China
| | - Yuan Bi
- NHC Key Laboratory of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Pharmacy School, Fudan University, 2140 Xietu Road, Shanghai, 200032, China
| | - Huijuan Shi
- NHC Key Laboratory of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Pharmacy School, Fudan University, 2140 Xietu Road, Shanghai, 200032, China.
| | - Runsheng Li
- NHC Key Laboratory of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Pharmacy School, Fudan University, 2140 Xietu Road, Shanghai, 200032, China.
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Coppedè F, Stoccoro A, Tannorella P, Gallo R, Nicolì V, Migliore L. Association of Polymorphisms in Genes Involved in One-Carbon Metabolism with MTHFR Methylation Levels. Int J Mol Sci 2019; 20:E3754. [PMID: 31370354 PMCID: PMC6696388 DOI: 10.3390/ijms20153754] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 07/26/2019] [Accepted: 07/30/2019] [Indexed: 12/11/2022] Open
Abstract
Methylenetetrahydrofolate reductase (MTHFR) is a pivotal enzyme in the one-carbon metabolism, a metabolic pathway required for DNA synthesis and methylation reactions. MTHFR hypermethylation, resulting in reduced gene expression, can contribute to several human disorders, but little is still known about the factors that regulate MTHFR methylation levels. We performed the present study to investigate if common polymorphisms in one-carbon metabolism genes contribute to MTHFR methylation levels. MTHFR methylation was assessed in peripheral blood DNA samples from 206 healthy subjects with methylation-sensitive high-resolution melting (MS-HRM); genotyping was performed for MTHFR 677C>T (rs1801133) and 1298A>C (rs1801131), MTRR 66A>G (rs1801394), MTR 2756A>G (rs1805087), SLC19A1 (RFC1) 80G>A (rs1051266), TYMS 28-bp tandem repeats (rs34743033) and 1494 6-bp ins/del (rs34489327), DNMT3A -448A>G (rs1550117), and DNMT3B -149C>T (rs2424913) polymorphisms. We observed a statistically significant effect of the DNMT3B -149C>T polymorphism on mean MTHFR methylation levels, and particularly CT and TT carriers showed increased methylation levels than CC carriers. The present study revealed an association between a functional polymorphism of DNMT3B and MTHFR methylation levels that could be of relevance in those disorders, such as inborn defects, metabolic disorders and cancer, that have been linked to impaired DNA methylation.
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Affiliation(s)
- Fabio Coppedè
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Via Roma 55, 56126 Pisa, Italy.
| | - Andrea Stoccoro
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Via Roma 55, 56126 Pisa, Italy
| | - Pierpaola Tannorella
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Via Roma 55, 56126 Pisa, Italy
- Unit of Genetics of Neurodegenerative and Metabolic Diseases, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | - Roberta Gallo
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Via Roma 55, 56126 Pisa, Italy
- Doctoral School in Genetics, Oncology and Clinical Medicine, Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
| | - Vanessa Nicolì
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Via Roma 55, 56126 Pisa, Italy
- Doctoral School in Genetics, Oncology and Clinical Medicine, Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
| | - Lucia Migliore
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Via Roma 55, 56126 Pisa, Italy
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14
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Coppedè F, Seghieri M, Stoccoro A, Santini E, Giannini L, Rossi C, Migliore L, Solini A. DNA methylation of genes regulating appetite and prediction of weight loss after bariatric surgery in obese individuals. J Endocrinol Invest 2019; 42:37-44. [PMID: 29603098 DOI: 10.1007/s40618-018-0881-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 03/25/2018] [Indexed: 12/15/2022]
Abstract
PURPOSE Epigenetic traits are influenced by clinical variables; interaction between DNA methylation (DNAmeth) and bariatric surgery-induced weight loss has been scarcely explored. We investigated whether DNAmeth of genes encoding for molecules/hormones regulating appetite, food intake or obesity could predict successful weight outcome following Roux-en-Y gastric bypass (RYGB). METHODS Forty-five obese individuals with no known comorbidities were stratified accordingly to weight decrease one-year after RYGB (excess weight loss, EWL ≥ 50%: good responders, GR; EWL < 50%: worse responders, WR). DNAmeth of leptin (LEP), ghrelin (GHRL), ghrelin receptor (GHSR) and insulin-growth factor-2 (IGF2) was assessed before intervention. Single nucleotide polymorphisms of genes affecting DNAmeth, DNMT3A and DNMT3B, were also determined. RESULTS At baseline, type 2 diabetes was diagnosed by OGTT in 13 patients. Post-operatively, GR (n = 23) and WR (n = 22) achieved an EWL of 67.7 ± 9.6 vs 38.2 ± 9.0%, respectively. Baseline DNAmeth did not differ between GR and WR for any tested genes, even when the analysis was restricted to subjects with no diabetes. A relationship between GHRL and LEP methylation profiles emerged (r = 0.47, p = 0.001). Searching for correlation between DNAmeth of the studied genes with demographic characteristics and baseline biochemical parameters of the studied population, we observed a correlation between IGF2 methylation and folate (r = 0.44, p = 0.003). Rs11683424 for DNMT3A and rs2424913 for DNMT3B did not correlate with DNAmeth of the studied genes. CONCLUSIONS In severely obese subjects, the degree of DNAmeth of some genes affecting obesity and related conditions does not work as predictor of successful response to RYGB.
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Affiliation(s)
- F Coppedè
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - M Seghieri
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - A Stoccoro
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - E Santini
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - L Giannini
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - C Rossi
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - L Migliore
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - A Solini
- Department of Surgical, Medical, Molecular and Critical Area Pathology, University of Pisa, Via Roma 67, 56126, Pisa, Italy.
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15
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Tang Q, Pan F, Yang J, Fu Z, Lu Y, Wu X, Han X, Chen M, Lu C, Xia Y, Wang X, Wu W. Idiopathic male infertility is strongly associated with aberrant DNA methylation of imprinted loci in sperm: a case-control study. Clin Epigenetics 2018; 10:134. [PMID: 30373665 PMCID: PMC6206675 DOI: 10.1186/s13148-018-0568-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 10/14/2018] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Male infertility is a complex disease caused by a combination of genetic, environmental, and lifestyle factors. Abnormal epigenetic programming has been proposed as a possible mechanism compromising male fertility. Recent studies suggest that aberrant imprinting in spermatozoa in a subset of infertile men is a risk factor for congenital diseases in children conceived via assisted reproduction techniques. In this study, we examined the DNA methylation status of CpG sites within the differentially methylated regions (DMRs) of three imprinted genes, H19, GNAS, and DIRAS3, using combined bisulfite PCR restriction analysis and bisulfite sequencing in sperm obtained from 135 men with idiopathic male infertility, including normozoospermia (n = 39), moderate oligozoospermia (n = 45), and severe oligozoospermia (n = 51), and fertile controls (n = 59). The percentage of global methylation was compared between fertile controls and infertile patients displaying abnormal DNA methylation status of imprinted loci. Moreover, we also analyzed whether the DNA methyltransferases (DNMTs) polymorphisms impact upon the methylation patterns of imprinted genes in idiopathic infertile males. RESULTS Aberrant methylation patterns of imprinted genes were more prevalent in idiopathic infertile males, especially in patients with oligozoospermia. Infertile males with aberrant methylation patterns of imprinted genes displayed a tendency of lower global methylation levels, although not reaching statistical significance (P = 0.13). In the genotype-epigenotype correlation analysis, no significant association was observed between aberrant methylation patterns of the three imprinted genes and genotypes of the four DNA methyltransferase (DNMT) genes. CONCLUSION We conclude that abnormalities of DMR within imprinted genes may be associated with idiopathic male infertility. Disruption in methylation pattern of the three imprinted genes does not occur in high-risk genotypes of DNMTs.
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Affiliation(s)
- Qiuqin Tang
- Department of Obstetrics, The Affiliated Obstetrics and Gynecology Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China
| | - Feng Pan
- Department of Urology, The Affiliated Obstetrics and Gynecology Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China
| | - Jing Yang
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, 101 Longmian Avenue, Nanjing, 211166, China.,Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Ziqiang Fu
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, 101 Longmian Avenue, Nanjing, 211166, China.,Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Yiwen Lu
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, 101 Longmian Avenue, Nanjing, 211166, China.,Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Xian Wu
- National Toxicology Program Laboratory, Division of the National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | - Xiumei Han
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, 101 Longmian Avenue, Nanjing, 211166, China.,Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Minjian Chen
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, 101 Longmian Avenue, Nanjing, 211166, China.,Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Chuncheng Lu
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, 101 Longmian Avenue, Nanjing, 211166, China.,Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Yankai Xia
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, 101 Longmian Avenue, Nanjing, 211166, 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, 101 Longmian Avenue, Nanjing, 211166, China.,Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Wei Wu
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, 101 Longmian Avenue, Nanjing, 211166, China. .,Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China. .,Department of Health and Human Services, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, USA.
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16
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Hanna CW, Demond H, Kelsey G. Epigenetic regulation in development: is the mouse a good model for the human? Hum Reprod Update 2018; 24:556-576. [PMID: 29992283 PMCID: PMC6093373 DOI: 10.1093/humupd/dmy021] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 05/20/2018] [Accepted: 06/05/2018] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Over the past few years, advances in molecular technologies have allowed unprecedented mapping of epigenetic modifications in gametes and during early embryonic development. This work is allowing a detailed genomic analysis, which for the first time can answer long-standing questions about epigenetic regulation and reprogramming, and highlights differences between mouse and human, the implications of which are only beginning to be explored. OBJECTIVE AND RATIONALE In this review, we summarise new low-cell molecular methods enabling the interrogation of epigenetic information in gametes and early embryos, the mechanistic insights these have provided, and contrast the findings in mouse and human. SEARCH METHODS Relevant studies were identified by PubMed search. OUTCOMES We discuss the levels of epigenetic regulation, from DNA modifications to chromatin organisation, during mouse gametogenesis, fertilisation and pre- and post-implantation development. The recently characterised features of the oocyte epigenome highlight its exceptionally unique regulatory landscape. The chromatin organisation and epigenetic landscape of both gametic genomes are rapidly reprogrammed after fertilisation. This extensive epigenetic remodelling is necessary for zygotic genome activation, but the mechanistic link remains unclear. While the vast majority of epigenetic information from the gametes is erased in pre-implantation development, new insights suggest that repressive histone modifications from the oocyte may mediate a novel mechanism of imprinting. To date, the characterisation of epigenetics in human development has been almost exclusively limited to DNA methylation profiling; these data reinforce that the global dynamics are conserved between mouse and human. However, as we look closer, it is becoming apparent that the mechanisms regulating these dynamics are distinct. These early findings emphasise the importance of investigations of fundamental epigenetic mechanisms in both mouse and humans. WIDER IMPLICATIONS Failures in epigenetic regulation have been implicated in human disease and infertility. With increasing maternal age and use of reproductive technologies in countries all over the world, it is becoming ever more important to understand the necessary processes required to establish a developmentally competent embryo. Furthermore, it is essential to evaluate the extent to which these epigenetic patterns are sensitive to such technologies and other adverse environmental exposures.
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Affiliation(s)
- Courtney W Hanna
- Epigenetics programme, Babraham Institute, Cambridge, UK
- Centre for Trophoblast Research, University of Cambridge, Cambridge, UK
| | - Hannah Demond
- Epigenetics programme, Babraham Institute, Cambridge, UK
| | - Gavin Kelsey
- Epigenetics programme, Babraham Institute, Cambridge, UK
- Centre for Trophoblast Research, University of Cambridge, Cambridge, UK
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17
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Champroux A, Cocquet J, Henry-Berger J, Drevet JR, Kocer A. A Decade of Exploring the Mammalian Sperm Epigenome: Paternal Epigenetic and Transgenerational Inheritance. Front Cell Dev Biol 2018; 6:50. [PMID: 29868581 PMCID: PMC5962689 DOI: 10.3389/fcell.2018.00050] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 04/18/2018] [Indexed: 12/12/2022] Open
Abstract
The past decade has seen a tremendous increase in interest and progress in the field of sperm epigenetics. Studies have shown that chromatin regulation during male germline development is multiple and complex, and that the spermatozoon possesses a unique epigenome. Its DNA methylation profile, DNA-associated proteins, nucleo-protamine distribution pattern and non-coding RNA set up a unique epigenetic landscape which is delivered, along with its haploid genome, to the oocyte upon fertilization, and therefore can contribute to embryogenesis and to the offspring health. An emerging body of compelling data demonstrates that environmental exposures and paternal lifestyle can change the sperm epigenome and, consequently, may affect both the embryonic developmental program and the health of future generations. This short review will attempt to provide an overview of what is currently known about sperm epigenome and the existence of transgenerational epigenetic inheritance of paternally acquired traits that may contribute to the offspring phenotype.
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Affiliation(s)
- Alexandre Champroux
- GReD, Laboratoire “Génétique, Reproduction and Développement,” UMR Centre National de la Recherche Scientifique 6293, INSERM U1103, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Julie Cocquet
- INSERM U1016, Institut Cochin, Centre National de la Recherche Scientifique UMR8104, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Joëlle Henry-Berger
- GReD, Laboratoire “Génétique, Reproduction and Développement,” UMR Centre National de la Recherche Scientifique 6293, INSERM U1103, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Joël R. Drevet
- GReD, Laboratoire “Génétique, Reproduction and Développement,” UMR Centre National de la Recherche Scientifique 6293, INSERM U1103, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Ayhan Kocer
- GReD, Laboratoire “Génétique, Reproduction and Développement,” UMR Centre National de la Recherche Scientifique 6293, INSERM U1103, Université Clermont Auvergne, Clermont-Ferrand, France
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