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Huang R, Chen J, Guo B, Jiang C, Sun W. Diabetes-induced male infertility: potential mechanisms and treatment options. Mol Med 2024; 30:11. [PMID: 38225568 PMCID: PMC10790413 DOI: 10.1186/s10020-023-00771-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 12/14/2023] [Indexed: 01/17/2024] Open
Abstract
Male infertility is a physiological phenomenon in which a man is unable to impregnate a fertile woman during a 12-month period of continuous, unprotected sexual intercourse. A growing body of clinical and epidemiological evidence indicates that the increasing incidence of male reproductive problems, especially infertility, shows a very similar trend to the incidence of diabetes within the same age range. In addition, a large number of previous in vivo and in vitro experiments have also suggested that the complex pathophysiological changes caused by diabetes may induce male infertility in multiple aspects, including hypothalamic-pituitary-gonadal axis dysfunction, spermatogenesis and maturation disorders, testicular interstitial cell damage erectile dysfunction. Based on the above related mechanisms, a large number of studies have focused on the potential therapeutic association between diabetes progression and infertility in patients with diabetes and infertility, providing important clues for the treatment of this population. In this paper, we summarized the research results of the effects of diabetes on male reproductive function in recent 5 years, elaborated the potential pathophysiological mechanisms of male infertility induced by diabetes, and reviewed and prospected the therapeutic measures.
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Affiliation(s)
- Runchun Huang
- The First Clinical Medical College, Lanzhou University, Lanzhou, People's Republic of China, 730000
| | - Jiawang Chen
- The First Clinical Medical College, Lanzhou University, Lanzhou, People's Republic of China, 730000
| | - Buyu Guo
- The First Clinical Medical College, Lanzhou University, Lanzhou, People's Republic of China, 730000
| | - Chenjun Jiang
- The First Clinical Medical College, Lanzhou University, Lanzhou, People's Republic of China, 730000
| | - Weiming Sun
- The First Clinical Medical College, Lanzhou University, Lanzhou, People's Republic of China, 730000.
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China.
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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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3
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Erdoğan K, Sanlier NT, Sanlier N. Are epigenetic mechanisms and nutrition effective in male and female infertility? J Nutr Sci 2023; 12:e103. [PMID: 37771507 PMCID: PMC10523291 DOI: 10.1017/jns.2023.62] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 06/15/2023] [Accepted: 06/16/2023] [Indexed: 09/30/2023] Open
Abstract
This review discusses epigenetic mechanisms and the relationship of infertility in men and women in relation to parameters pertaining to nutrition. The prevalence of infertility worldwide is 8-12 %, and one out of every eight couples receives medical treatment. Epigenetic mechanisms, aging, environmental factors, dietary energy and nutrients and non-nutrient compounds; more or less energy intake, and methionine come into play in the occurrence of infertility. It also interacts with vitamins B12, D and B6, biotin, choline, selenium, zinc, folic acid, resveratrol, quercetin and similar factors. To understand the molecular mechanisms regulating the expression of genes that affect infertility, the environment, the role of genotype, age, health, nutrition and changes in the individual's epigenotype must first be considered. This will pave the way for the identification of the unknown causes of infertility. Insufficient or excessive intake of energy and certain macro and micronutrients may contribute to the occurrence of infertility as well. In addition, it is reported that 5-10 % of body weight loss, moderate physical activity and nutritional interventions for improvement in insulin sensitivity contribute to the development of fertility. Processes that pertain to epigenetics carry alterations which are inherited yet not encoded via the DNA sequence. Nutrition is believed to have an impact over the epigenetic mechanisms which are effective in the pathogenesis of several diseases like infertility. Epigenetic mechanisms of individuals with infertility are different from healthy individuals. Infertility is associated with epigenetic mechanisms, nutrients, bioactive components and numerous other factors.
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Key Words
- 5mc, 5-methylcytosine
- AMH, anti-Müllerian hormone
- ART, assisted reproductive technique
- Aging
- CoQ10, coenzyme Q10
- CpG dinucleotides, context of guanine
- DMR, distinct methylated region
- DNMT, DNA methyltransferase
- Epigenetic
- FSH, follicle stimulating hormone
- Female
- H2A, H2B, H3 and H4, nucleosomal core histones
- HOXA10, HomeoboxA10
- HPR, histone-protamine ratio
- ICMART, International Committee for Monitoring Assisted Reproductive Technologies
- ICR, imprinted control region
- ICSI, intracytoplasmic sperm injection
- IL-6, interleukin-6
- IVF, in vitro fertilisation
- Infertility
- MAR, matrix attachment region
- MTHFR, methylenetetrahydrofolate reductase
- Male
- NIFT, non-IVF fertility treatment
- NTD, neural tube defect
- Nutrition
- OAT, oligo-astheno-teratozoospermia
- P1, P2, potamine 1, potamine 2
- PCOS, polycystic ovary syndrome
- ROS, reactive oxygen species
- SAM, S-adenosylmethionine
- SHBG, sex hormone-binding globulin
- SNP, single nucleotide polymorphism
- SNRPN, small nuclear ribonucleoprotein polypeptide N
- TP1, TP2, transition proteins
- UMI, unexplained male infertility
- VDR, vitamin D receptor
- lncRNA, long non-coding RNA
- mRNA, coding RNA
- miRNA, micro-RNA
- ncRNA, non-coding RNA
- piRNA, piwi-interacting RNA
- siRNA, small interfering RNA
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Affiliation(s)
- Kadriye Erdoğan
- Department of Obstetrics and Gynecology, Health Sciences University, Etlik Zübeyde Hanım Women's Health Training and Research Hospital, Ankara, Turkey
| | - Nazlı Tunca Sanlier
- Department of Obstetrics and Gynecology, Ankara City Hospital, Ankara, Turkey
| | - Nevin Sanlier
- Department of Nutrition and Dietetics, School of Health Sciences, Ankara Medipol University, Altındağ, Ankara 06050, Turkey
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Peng Y, Guo R, Shi B, Li D. The role of long non-coding RNA H19 in infertility. Cell Death Discov 2023; 9:268. [PMID: 37507391 PMCID: PMC10382492 DOI: 10.1038/s41420-023-01567-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 07/05/2023] [Accepted: 07/19/2023] [Indexed: 07/30/2023] Open
Abstract
Infertility is defined as the failure to conceive after at least one year of unprotected intercourse. Long non-coding RNAs (lncRNAs) are transcripts that contain more than 200 nucleotides but do not convert into proteins. LncRNAs, particularly lncRNA H19, have been linked to the emergence and progression of various diseases. This review focuses on the role of H19 in infertility caused by polycystic ovary syndrome, endometriosis, uterine fibroids, diminished ovarian reserve, male factor, and assisted reproductive technology-related pathology, highlighting the potential of H19 as a molecular target for the future treatment of infertility.
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Affiliation(s)
- Yuanyuan Peng
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, 110004, China
- NHC Key Laboratory of Advanced Reproductive Medicine and Fertility (China Medical University), National Health Commission, Shenyang, 110004, China
| | - Renhao Guo
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, 110004, China
| | - Bei Shi
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, 110004, China.
- NHC Key Laboratory of Advanced Reproductive Medicine and Fertility (China Medical University), National Health Commission, Shenyang, 110004, China.
- Department of Physiology, School of Life Sciences, China Medical University, Shenyang, 110122, China.
| | - Da Li
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, 110004, China.
- NHC Key Laboratory of Advanced Reproductive Medicine and Fertility (China Medical University), National Health Commission, Shenyang, 110004, China.
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Cannarella R, Crafa A, Barbagallo F, Lundy SD, La Vignera S, Condorelli RA, Calogero AE. H19 Sperm Methylation in Male Infertility: A Systematic Review and Meta-Analysis. Int J Mol Sci 2023; 24:ijms24087224. [PMID: 37108386 PMCID: PMC10139270 DOI: 10.3390/ijms24087224] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/04/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023] Open
Abstract
This systematic review and meta-analysis summarize the difference in the methylation of the H19 gene in patients with abnormal versus normal conventional sperm parameters. It also evaluates the effects of age and sperm concentration on H19 methylation in spermatozoa using meta-regression analysis. It was performed according to the MOOSE guidelines for meta-analyses and Systematic Reviews of Observational Studies and the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols (PRISMA-P). The quality of the evidence reported in the studies included was assessed using the Cambridge Quality Checklists. A total of 11 articles met our inclusion criteria. Quantitative analysis showed that H19 methylation levels were significantly lower in the group of infertile patients than in fertile controls. The reduction in methylation was much more pronounced in patients with oligozoospermia (alone or associated with other sperm parameter abnormalities) and in those with recurrent pregnancy loss. Meta-regression analysis showed the results to be independent of both patient age and sperm concentration. Therefore, the H19 methylation pattern should be evaluated among couples accessing assisted reproductive techniques (ART), in order to gain prognostic information on ART outcome and offspring health.
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Affiliation(s)
- Rossella Cannarella
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
- Glickman Urological & Kidney Institute, Cleveland Clinic Foundation, Cleveland, OH 44125, USA
| | - Andrea Crafa
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
| | - Federica Barbagallo
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
| | - Scott D Lundy
- Glickman Urological & Kidney Institute, Cleveland Clinic Foundation, Cleveland, OH 44125, USA
| | - Sandro La Vignera
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
| | - Rosita A Condorelli
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
| | - Aldo E Calogero
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
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6
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Abstract
Summary
High rates of infertility in type 2 diabetic (T2DM) men have led to attempts to understand the mechanisms involved in this process. This condition can be investigated from at least two aspects, namely sperm quality indices and epigenetic alterations. Epigenetics science encompasses the phenomena that can lead to inherited changes independently of the genetics. This study has been performed to test the hypothesis of the relationship between T2DM and the epigenetic profile of the sperm, as well as sperm quality indices. This research included 42 individuals referred to the infertility clinic of Royan Institute, Iran in 2019–2021. The study subjects were assigned to three groups: normozoospermic non-diabetic (control), normozoospermic diabetic (DN) and non-normozoospermic diabetic (D.Non-N). Sperm DNA fragmentation was evaluated using the sperm chromatin structure assay technique. The global methylation level was examined using 5-methyl cytosine antibody and the methylation status in differentially methylated regions of H19, MEST, and SNRPN was assessed using the methylation-sensitive high-resolution melting technique. The results showed that the sperm global methylation in spermatozoa of D.Non-N group was significantly reduced compared with the other two groups (P < 0.05). The MEST and H19 genes were hypomethylated in the spermatozoa of D.Non-N individuals, but the difference level was not significant for MEST. The SNRPN gene was significantly hypermethylated in these individuals (P < 0.05). The results of this study suggest that T2DM alters the methylation profile and epigenetic programming in spermatozoa of humans and that these methylation changes may ultimately influence the fertility status of men with diabetes.
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Role of Long Non-Coding RNAs in Pulmonary Arterial Hypertension. Cells 2021; 10:cells10081892. [PMID: 34440661 PMCID: PMC8394897 DOI: 10.3390/cells10081892] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/22/2021] [Accepted: 07/23/2021] [Indexed: 12/21/2022] Open
Abstract
Pulmonary arterial hypertension (PAH) is a debilitating condition of the pulmonary circulatory system that occurs in patients of all ages and if untreated, eventually leads to right heart failure and death. Despite existing medical treatment options that improve survival and quality of life, the disease remains incurable. Thus, there is an urgent need to develop novel therapies to treat this disease. Emerging evidence suggests that long non-coding RNAs (lncRNAs) play critical roles in pulmonary vascular remodeling and PAH. LncRNAs are implicated in pulmonary arterial endothelial dysfunction by modulating endothelial cell proliferation, angiogenesis, endothelial mesenchymal transition, and metabolism. LncRNAs are also involved in inducing different pulmonary arterial vascular smooth muscle cell phenotypes, such as cell proliferation, apoptosis, migration, regulation of the phenotypic switching, and cell cycle. LncRNAs are essential regulators of gene expression that affect various diseases at the chromatin, transcriptional, post-translational, and even post-translational levels. Here, we focus on the role of LncRNAs and their molecular mechanisms in the pathogenesis of PAH. We also discuss the current research challenge and potential biomarker and therapeutic potentials of lncRNAs in PAH.
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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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9
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Al-Qazzaz HK, Al-Awadi SJ. Epigenetic Alteration in DNA methylation pattern and gene expression level using H19 on oligospermia patients in Iraqi Men. GENE REPORTS 2020. [DOI: 10.1016/j.genrep.2020.100780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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10
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Leitão E, Di Persio S, Laurentino S, Wöste M, Dugas M, Kliesch S, Neuhaus N, Horsthemke B. The sperm epigenome does not display recurrent epimutations in patients with severely impaired spermatogenesis. Clin Epigenetics 2020; 12:61. [PMID: 32375885 PMCID: PMC7204326 DOI: 10.1186/s13148-020-00854-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 04/17/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND In the past 15 years, numerous studies have described aberrant DNA methylation of imprinted genes (e.g. MEST and H19) in sperm of oligozoospermic men, but the prevalence and genomic extent of abnormal methylation patterns have remained unknown. RESULTS Using deep bisulfite sequencing (DBS), we screened swim-up sperm samples from 40 normozoospermic and 93 patients diagnosed as oligoasthenoteratozoospermic, oligoteratozoospermic or oligozoospermic, which are termed OATs throughout the manuscript, for H19 and MEST methylation. Based on this screening, we defined three patient groups: normal controls (NC), abnormally methylated oligozoospermic (AMO; n = 7) and normally methylated oligozoospermic (NMO; n = 86). Whole-genome bisulfite sequencing (WGBS) of five NC and five AMO samples revealed abnormal methylation levels of all 50 imprinting control regions in each AMO sample. To investigate whether this finding reflected epigenetic germline mosaicism or the presence of residual somatic DNA, we made a genome-wide inventory of soma-germ cell-specific DNA methylation. We found that > 2000 germ cell-specific genes are promoter-methylated in blood and that AMO samples had abnormal methylation levels at these genes, consistent with the presence of somatic cell DNA. The comparison between the five NC and six NMO samples revealed 19 differentially methylated regions (DMRs), none of which could be validated in an independent cohort of 40 men. Previous studies reported a higher incidence of epimutations at single CpG sites in the CTCF-binding region 6 of H19 in infertile patients. DBS analysis of this locus, however, revealed an association between DNA methylation levels and genotype (rs2071094), but not fertility phenotype. CONCLUSIONS Our results suggest that somatic DNA contamination and genetic variation confound methylation studies in sperm of infertile men. While we cannot exclude the existence of rare patients with slightly abnormal sperm methylation at non-recurrent CpG sites, the prevalence of aberrant methylation in swim-up purified sperm of infertile men has likely been overestimated, which is reassuring for patients undergoing assisted reproduction.
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Affiliation(s)
- Elsa Leitão
- Institute of Human Genetics, University Hospital Essen, Essen, Germany
| | - Sara Di Persio
- Centre of Reproductive Medicine and Andrology, University Hospital Münster, Münster, Germany
| | - Sandra Laurentino
- Centre of Reproductive Medicine and Andrology, University Hospital Münster, Münster, Germany
| | - Marius Wöste
- Institute of Medical Informatics, University of Münster, Münster, Germany
| | - Martin Dugas
- Institute of Medical Informatics, University of Münster, Münster, Germany
| | - Sabine Kliesch
- Centre of Reproductive Medicine and Andrology, Department of Clinical and Surgical Andrology, University Hospital Münster, Münster, Germany
| | - Nina Neuhaus
- Centre of Reproductive Medicine and Andrology, University Hospital Münster, Münster, Germany.
| | - Bernhard Horsthemke
- Institute of Human Genetics, University Hospital Essen, Essen, Germany.,Institute of Human Genetics, University Hospital Münster, Münster, Germany
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Malagutti N, Rotondo JC, Cerritelli L, Melchiorri C, De Mattei M, Selvatici R, Oton-Gonzalez L, Stomeo F, Mazzoli M, Borin M, Mores B, Ciorba A, Tognon M, Pelucchi S, Martini F. High Human Papillomavirus DNA loads in Inflammatory Middle Ear Diseases. Pathogens 2020; 9:224. [PMID: 32197385 PMCID: PMC7157545 DOI: 10.3390/pathogens9030224] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/14/2020] [Accepted: 03/15/2020] [Indexed: 01/19/2023] Open
Abstract
Background. Previous studies reported human papillomaviruses (HPVs) in middle ear tumors, whereas these viruses have been poorly investigated in chronic inflammatory middle ear diseases. We investigated HPVs in non-tumor middle ear diseases, including chronic otitis media (COM). Methods. COM specimens (n = 52), including chronic suppurative otitis media (CSOM) (n =38) and cholesteatoma (COMC) (n = 14), as well as normal middle ear (NME) specimens (n = 56) were analyzed. HPV sequences and DNA loads were analyzed by quantitative-PCR. HPV genotyping was performed by direct sequencing. Results. HPV DNA was detected in 23% (12/52) of COM and in 30.4% (17/56) of NME (p > 0.05). Specifically, HPV DNA sequences were found in 26.3% (10/38) of CSOM and in 14.3% (2/14) of COMC (p > 0.05). Interestingly, the HPV DNA load was higher in COMC (mean 7.47 copy/cell) than in CSOM (mean 1.02 copy/cell) and NME (mean 1.18 copy/cell) (P = 0.03 and P = 0.017 versus CSOM and NME, respectively). HPV16 and HPV18 were the main genotypes detected in COMC, CSOM and NME. Conclusions. These data suggest that HPV may infect the middle ear mucosa, whereas HPV-positive COMCs are associated with higher viral DNA loads as compared to NME.
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Affiliation(s)
- Nicola Malagutti
- ENT Department, University Hospital of Ferrara, 44121 Ferrara, Italy; (N.M.); (L.C.); (C.M.); (F.S.); (M.M.); (M.B.); (B.M.); (S.P.)
| | - John Charles Rotondo
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy; (J.C.R.); (M.D.M.); (L.O.-G.); (M.T.)
| | - Luca Cerritelli
- ENT Department, University Hospital of Ferrara, 44121 Ferrara, Italy; (N.M.); (L.C.); (C.M.); (F.S.); (M.M.); (M.B.); (B.M.); (S.P.)
| | - Claudio Melchiorri
- ENT Department, University Hospital of Ferrara, 44121 Ferrara, Italy; (N.M.); (L.C.); (C.M.); (F.S.); (M.M.); (M.B.); (B.M.); (S.P.)
| | - Monica De Mattei
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy; (J.C.R.); (M.D.M.); (L.O.-G.); (M.T.)
| | - Rita Selvatici
- Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy;
| | - Lucia Oton-Gonzalez
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy; (J.C.R.); (M.D.M.); (L.O.-G.); (M.T.)
| | - Francesco Stomeo
- ENT Department, University Hospital of Ferrara, 44121 Ferrara, Italy; (N.M.); (L.C.); (C.M.); (F.S.); (M.M.); (M.B.); (B.M.); (S.P.)
| | - Manuela Mazzoli
- ENT Department, University Hospital of Ferrara, 44121 Ferrara, Italy; (N.M.); (L.C.); (C.M.); (F.S.); (M.M.); (M.B.); (B.M.); (S.P.)
| | - Michela Borin
- ENT Department, University Hospital of Ferrara, 44121 Ferrara, Italy; (N.M.); (L.C.); (C.M.); (F.S.); (M.M.); (M.B.); (B.M.); (S.P.)
| | - Beatrice Mores
- ENT Department, University Hospital of Ferrara, 44121 Ferrara, Italy; (N.M.); (L.C.); (C.M.); (F.S.); (M.M.); (M.B.); (B.M.); (S.P.)
| | - Andrea Ciorba
- ENT Department, University Hospital of Ferrara, 44121 Ferrara, Italy; (N.M.); (L.C.); (C.M.); (F.S.); (M.M.); (M.B.); (B.M.); (S.P.)
| | - Mauro Tognon
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy; (J.C.R.); (M.D.M.); (L.O.-G.); (M.T.)
| | - Stefano Pelucchi
- ENT Department, University Hospital of Ferrara, 44121 Ferrara, Italy; (N.M.); (L.C.); (C.M.); (F.S.); (M.M.); (M.B.); (B.M.); (S.P.)
| | - Fernanda Martini
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy; (J.C.R.); (M.D.M.); (L.O.-G.); (M.T.)
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12
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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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13
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Gunes S, Metin Mahmutoglu A, Arslan MA, Henkel R. Smoking-induced genetic and epigenetic alterations in infertile men. Andrologia 2018; 50:e13124. [DOI: 10.1111/and.13124] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 07/18/2018] [Indexed: 02/06/2023] Open
Affiliation(s)
- Sezgin Gunes
- Department of Medical Biology, Faculty of Medicine; Ondokuz Mayis University; Samsun Turkey
- Department of Multidisciplinary Molecular Medicine, Health Sciences Institute; Ondokuz Mayis University; Samsun Turkey
| | - Asli Metin Mahmutoglu
- Department of Medical Biology, Faculty of Medicine; Ondokuz Mayis University; Samsun Turkey
| | - Mehmet Alper Arslan
- Department of Medical Biology, Faculty of Medicine; Ondokuz Mayis University; Samsun Turkey
- Department of Multidisciplinary Molecular Medicine, Health Sciences Institute; Ondokuz Mayis University; Samsun Turkey
| | - Ralf Henkel
- Department of Medical Bioscience; University of the Western Cape; Bellville South Africa
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14
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Peng H, Zhao P, Liu J, Zhang J, Zhang J, Wang Y, Wu L, Song M, Wang W. Novel Epigenomic Biomarkers of Male Infertility Identified by Methylation Patterns of CpG Sites Within Imprinting Control Regions of H19 and SNRPN Genes. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2018; 22:354-364. [PMID: 29708855 DOI: 10.1089/omi.2018.0019] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Male infertility is an important global health burden that can benefit from novel biomarkers and diagnostics innovation. Aberrant methylation of the imprinted genes H19 and SNRPN (small nuclear ribonucleoprotein polypeptide N) in sperm DNA has been implicated in abnormal sperm parameters and male infertility. However, whether certain methylation patterns of one or multiple CpG sites within an imprinted gene are pathological for multiple sperm defects remains poorly understood. To examine the diagnostic potential of certain methylation patterns of CpG sites for multiphenotype defects in human sperm, the sperm DNA methylation patterns of individual CpG sites within imprinting control regions (ICRs) of imprinted genes H19 and SNRPN were measured by bisulfite pyrosequencing in a Han Chinese population sample: 39 oligoasthenozoospermia (OA) patients, 36 asthenoteratozoospermia (AT) patients, and 50 normozoospermia (N) controls. A partial least squares discriminant analysis model was built with the CpG sites as independent variables. Among the 16 CpG sites screened, the methylation patterns of eight CpG sites within H19-ICR (CpG sites 1, 6-9, 12 and 15-16), and eight CpG sites within SNRPN-ICR (CpG sites 2, 5-6, 8-10, 13, and 16) correctly classified 74.4% and 72.0% of the samples in terms of male fertile status, respectively. Furthermore, by combination of these 16 selected CpG sites within ICRs of H19 and SNRPN, 88.0% of the samples could be successfully classified. Our study demonstrates that methylation profiles of CpG sites within ICRs of imprinted genes H19 and SNRPN may potentially serve as epigenomic biomarkers for assessment of infertility in men with multiple sperm defects. Further studies in independent population samples are called for diagnostic significance of methylation patterns of CpG sites within imprinted genes.
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Affiliation(s)
- Hongli Peng
- 1 School of Public Health, Capital Medical University , Beijing, China .,2 Municipal Key Laboratory of Clinical Epidemiology , Beijing, China
| | - Panlin Zhao
- 3 Air Force General Hospital , PLA, Beijing, China
| | - Jiaonan Liu
- 1 School of Public Health, Capital Medical University , Beijing, China .,2 Municipal Key Laboratory of Clinical Epidemiology , Beijing, China
| | - Jinxia Zhang
- 1 School of Public Health, Capital Medical University , Beijing, China .,2 Municipal Key Laboratory of Clinical Epidemiology , Beijing, China
| | - Jie Zhang
- 1 School of Public Health, Capital Medical University , Beijing, China .,2 Municipal Key Laboratory of Clinical Epidemiology , Beijing, China
| | - Youxin Wang
- 1 School of Public Health, Capital Medical University , Beijing, China .,2 Municipal Key Laboratory of Clinical Epidemiology , Beijing, China
| | - Lijuan Wu
- 1 School of Public Health, Capital Medical University , Beijing, China .,2 Municipal Key Laboratory of Clinical Epidemiology , Beijing, China
| | - Manshu Song
- 1 School of Public Health, Capital Medical University , Beijing, China .,2 Municipal Key Laboratory of Clinical Epidemiology , Beijing, China .,4 School of Medical and Health Sciences, Edith Cowan University , Perth, Australia
| | - Wei Wang
- 1 School of Public Health, Capital Medical University , Beijing, China .,2 Municipal Key Laboratory of Clinical Epidemiology , Beijing, China .,4 School of Medical and Health Sciences, Edith Cowan University , Perth, Australia .,5 School of Public Health, Taishan Medical University , Taian, China
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15
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Santi D, De Vincentis S, Magnani E, Spaggiari G. Impairment of sperm DNA methylation in male infertility: a meta-analytic study. Andrology 2018; 5:695-703. [PMID: 28718528 DOI: 10.1111/andr.12379] [Citation(s) in RCA: 99] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 04/10/2017] [Accepted: 04/13/2017] [Indexed: 12/13/2022]
Abstract
Considering the widespread use of assisted reproductive techniques (ART), DNA methylation of specific genes involved in spermatogenesis achieves increasingly clinical relevance, representing a possible explanation of increased incidence of syndromes related to genomic imprinting in medically assisted pregnancies. Several trials suggested a relationship between male sub-fertility and sperm DNA methylation, although its weight on seminal parameters alteration is still a matter of debate. To evaluate whether aberrant sperm DNA methylation of imprinted genes is associated with impaired sperm parameters. Meta-analysis of controlled clinical trials evaluating imprinted genes sperm DNA methylation comparing men with idiopathic infertility to fertile controls. Twenty-four studies were included, allowing a meta-analytic evaluation for H19, MEST, SNRPN, and LINE-1. When a high heterogeneity of the results was demonstrated, the random effect model was used. H19 methylation levels resulted significantly lower in 879 infertile compared with 562 fertile men (7.53%, 95% CI: 5.14-9.93%, p < 0.001), suggesting a 9.91-fold higher risk ratio to show aberrant sperm DNA methylation (95% CI: 5.55-17.70, p < 0.001, I2 = 19%) in infertile men. The mean MEST methylation level was significantly higher in 846 infertile compared with 353 fertile men (3.35%, 95% CI: 1.41-5.29%, p < 0.001), as well as for SNRPN comparing 301 infertile men with 124 controls (3.23%, 95% CI: 0.75-5.72%, p < 0.001). LINE-1 methylation levels did not differ between 291 infertile men and 198 controls (0.44%, 95% CI: -2.04-1.16%, p = 0.63). The meta-analytic approach demonstrated that male infertility is associated with altered sperm methylation at H19, MEST, and SNRPN. Although its role in infertility remains unclear, sperm DNA methylation could be associated with the epigenetic risk in ART. In this setting, before proposing this analysis in clinical practice, an accurate identification of the most representative genes and a cost-effectiveness evaluation should be assessed in ad hoc prospective studies.
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Affiliation(s)
- D Santi
- Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy.,Unit of Endocrinology, Department of Medicine, Endocrinology, Metabolism and Geriatrics, Azienda OU of Modena, Modena, Italy
| | - S De Vincentis
- Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy.,Unit of Endocrinology, Department of Medicine, Endocrinology, Metabolism and Geriatrics, Azienda OU of Modena, Modena, Italy
| | - E Magnani
- Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy.,Unit of Endocrinology, Department of Medicine, Endocrinology, Metabolism and Geriatrics, Azienda OU of Modena, Modena, Italy
| | - G Spaggiari
- Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy.,Unit of Endocrinology, Department of Medicine, Endocrinology, Metabolism and Geriatrics, Azienda OU of Modena, Modena, Italy
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16
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Nasri F, Gharesi-Fard B, Namavar Jahromi B, Farazi-Fard MA, Banaei M, Davari M, Ebrahimi S, Anvar Z. Sperm DNA methylation of H19 imprinted gene and male infertility. Andrologia 2017; 49. [PMID: 28295500 DOI: 10.1111/and.12766] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2016] [Indexed: 02/06/2023] Open
Abstract
Infertility affects up to 15% of reproductive-aged couples worldwide, with male factor being detected in 40%-50% of the cases. Proper sperm production is associated with the establishment of appropriate epigenetic marks in developing germ cells. Several studies have demonstrated the association between abnormal spermatogenesis and epigenetic disturbances with the major focus on DNA methylation. Imprinted genes are expressed in a parent-of-origin-specific manner, and the role of their DNA methylation in proper spermatogenesis has been documented recently. The existing evidence along with the absence of relevant data in south of Iran prompted us to study the methylation of H19 imprinted gene in spermatozoa of idiopathic infertile patients (males with abnormalities in sperm parameters) and healthy controls by Combined Bisulfite Restriction Analysis. According to our results, the lowest methylation percentage of H19 imprinted gene belongs to three cases with sperm characteristics under normal range (two cases Oligoasthenoteratozoospermia and one case Oligoteratozoospermia). However, our results show that the median of methylation percentage for H19 is not statistically significant between case and control groups. Our results and those of others introduce DNA methylation as a potential marker of fertility and should be investigated with more patients in future studies.
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Affiliation(s)
- F Nasri
- Department of Immunology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - B Gharesi-Fard
- Department of Immunology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.,Infertility Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - B Namavar Jahromi
- Infertility Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Department of Obstetrics and Gynecology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M A Farazi-Fard
- Department of Medical Genetics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M Banaei
- IVF Division, Ghadir-Mother and Child Hospital of Shiraz, Shiraz, Iran
| | - M Davari
- Department of Obstetrics and Gynecology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.,IVF Division, Ghadir-Mother and Child Hospital of Shiraz, Shiraz, Iran
| | - S Ebrahimi
- Department of Immunology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Z Anvar
- Infertility Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Department of Obstetrics and Gynecology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
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