1
|
Kurashova NA, Dashiev BG, Kolesnikov SI, Kolesnikova LI. Oxidative Stress, Telomere Length and Telomerase Activity in Spermatogenesis Disorders (Review of Scientific Activity). Bull Exp Biol Med 2023; 176:115-122. [PMID: 38189870 DOI: 10.1007/s10517-024-05979-3] [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: 05/17/2023] [Indexed: 01/09/2024]
Abstract
The paper systematizes the available data on the study of oxidative stress, the relative length of telomeres, and telomerase activity in male infertility and disorders of spermatogenesis. The study of telomeres, the structures that protect chromosome ends and genome integrity, is of interest for researchers in various fields, from cell biology and epidemiology to ecology and evolutionary biology. The review includes our own data on the study of the relative length of telomeres, oxidative stress, and telomerase activity and reflects modern ideas about the importance of these structures both in the maintenance of genome stability during cell division and in gametogenesis and reproduction. Many studies indicate the role of oxidative stress in the pathogenesis of various diseases, including male infertility. In turn, studies of telomeres as a biomarker of male infertility are insufficient, and the results obtained are extremely controversial and require deeper knowledge about the mechanisms underlying the dynamics of telomere length.
Collapse
Affiliation(s)
- N A Kurashova
- Scientific Center for Family Health and Human Reproduction Problems, Irkutsk, Russia.
| | - B G Dashiev
- Scientific Center for Family Health and Human Reproduction Problems, Irkutsk, Russia
| | - S I Kolesnikov
- Scientific Center for Family Health and Human Reproduction Problems, Irkutsk, Russia
| | - L I Kolesnikova
- Scientific Center for Family Health and Human Reproduction Problems, Irkutsk, Russia
| |
Collapse
|
2
|
Bui MD, Luong TLA, Tran HD, Duong TTH, Nguyen TN, Nguyen DT, Nguyen TD, Nong VH. A Novel Frameshift Microdeletion of the TEX12 Gene Caused Infertility in Two Brothers with Nonobstructive Azoospermia. Reprod Sci 2023; 30:2876-2881. [PMID: 37012491 DOI: 10.1007/s43032-023-01226-8] [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: 12/23/2022] [Accepted: 03/27/2023] [Indexed: 04/05/2023]
Abstract
Male infertility is a growing health problem, which affects approximately 7% of the global male population. Nonobstructive azoospermia (NOA) is one of the most severe forms of male infertility caused by genetic defects, including chromosome structural abnormalities, Y chromosome microdeletions, or single-gene alterations. However, the etiology of up to 40% of NOA cases is unidentified. By whole-exome sequencing, we detected a homozygous 5-bp-deletion variant in exon 4 of the TEX12 gene (c.196-200del, p.L66fs, NM_031275.4) in two brothers with NOA of a nonconsanguineous Vietnamese family. This deletion variant of 5 nucleotides (ATTAG) results in a premature stop codon in exon 4 and truncation of the C-terminal. Segregation analysis by Sanger sequencing confirmed that the deletion variant was inherited in an autosomal recessive pattern. The 1st and 3rd infertile sons were homozygous for the deletion, whereas the 2nd fertile son and both parents were heterozygous. The new deletion mutation identified in TEX12 gene caused loss of function of TEX12 gene. The loss of TEX12 function has already caused infertility in male mice. Therefore, we concluded that the loss of TEX12 function may cause infertility in men. To our knowledge, this is the first case reported so far indicating disruption of human TEX12, which leads to infertility in men.
Collapse
Affiliation(s)
- Minh Duc Bui
- Institute of Genome Research, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | | | - Huu Dinh Tran
- Institute of Genome Research, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Thi Thu Ha Duong
- Institute of Genome Research, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Thy Ngoc Nguyen
- University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Dang Ton Nguyen
- Institute of Genome Research, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Thuy Duong Nguyen
- Institute of Genome Research, Vietnam Academy of Science and Technology, Hanoi, Vietnam.
| | - Van Hai Nong
- Institute of Genome Research, Vietnam Academy of Science and Technology, Hanoi, Vietnam.
| |
Collapse
|
3
|
Llano E, Pendás AM. Synaptonemal Complex in Human Biology and Disease. Cells 2023; 12:1718. [PMID: 37443752 PMCID: PMC10341275 DOI: 10.3390/cells12131718] [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: 05/23/2023] [Revised: 06/16/2023] [Accepted: 06/18/2023] [Indexed: 07/15/2023] Open
Abstract
The synaptonemal complex (SC) is a meiosis-specific multiprotein complex that forms between homologous chromosomes during prophase of meiosis I. Upon assembly, the SC mediates the synapses of the homologous chromosomes, leading to the formation of bivalents, and physically supports the formation of programmed double-strand breaks (DSBs) and their subsequent repair and maturation into crossovers (COs), which are essential for genome haploidization. Defects in the assembly of the SC or in the function of the associated meiotic recombination machinery can lead to meiotic arrest and human infertility. The majority of proteins and complexes involved in these processes are exclusively expressed during meiosis or harbor meiosis-specific subunits, although some have dual functions in somatic DNA repair and meiosis. Consistent with their functions, aberrant expression and malfunctioning of these genes have been associated with cancer development. In this review, we focus on the significance of the SC and their meiotic-associated proteins in human fertility, as well as how human genetic variants encoding for these proteins affect the meiotic process and contribute to infertility and cancer development.
Collapse
Affiliation(s)
- Elena Llano
- Departamento Fisiología y Farmacología, Universidad de Salamanca, 37007 Salamanca, Spain
- Molecular Mechanisms Program, Centro de Investigación del Cáncer, Instituto de Biologıía Molecular y Celular del Cáncer, CSIC-Universidad de Salamanca, 37007 Salamanca, Spain;
| | - Alberto M. Pendás
- Molecular Mechanisms Program, Centro de Investigación del Cáncer, Instituto de Biologıía Molecular y Celular del Cáncer, CSIC-Universidad de Salamanca, 37007 Salamanca, Spain;
| |
Collapse
|
4
|
Liu W, Zhao Y, Liu X, Zhang X, Ding J, Li Y, Tian Y, Wang H, Liu W, Lu Z. A Novel Meiosis-Related lncRNA, Rbakdn, Contributes to Spermatogenesis by Stabilizing Ptbp2. Front Genet 2021; 12:752495. [PMID: 34707642 PMCID: PMC8542969 DOI: 10.3389/fgene.2021.752495] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 09/23/2021] [Indexed: 01/18/2023] Open
Abstract
Spermatocyte meiosis is the cornerstone of mammalian production. Thousands of long noncoding RNAs (lncRNAs) have been reported to be functional in various cellular processes, but the function of lncRNAs in meiosis remains largely unknown. Here, we profiled lncRNAs in spermatocytes at stage I of meiosis and identified a testis-specific lncRNA, Rbakdn, as a vital regulator of meiosis. Rbakdn is dynamically expressed during meiosis I, and Rbakdn knockdown inhibits meiosis in vitro. Furthermore, Rbakdn knockdown in testes in mice by intratesticular injection disturbs meiosis, reduces testicular volume, and increases apoptosis of spermatocytes, resulting in vacuolation of the seminiferous tubules. Rbakdn can bind to Ptbp2, an RNA-binding protein that is important in the regulation of the alternative splicing of many genes in spermatogenesis. Rbakdn knockdown leads to a decrease in Ptbp2 through the ubiquitination degradation pathway, indicating that Rbakdn maintains the stability of Ptbp2. In conclusion, our study identified an lncRNA, Rbakdn, with a crucial role in meiosis.
Collapse
Affiliation(s)
- Wensheng Liu
- State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, China
| | - Yinan Zhao
- State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, China
| | - Xiaohua Liu
- NHC Key Laboratory of Male Reproduction and Genetics, Family Planning Research Institute of Guangdong Province, Guangzhou, China
| | - Xiaoya Zhang
- State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, China
| | - Jiancheng Ding
- State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, China
| | - Yang Li
- State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, China
| | - Yingpu Tian
- State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, China
| | - Haibin Wang
- Fujian Provincial Key Laboratory of Reproductive Health Research, Medical College of Xiamen University, Xiamen, China
| | - Wen Liu
- State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, China.,Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, Xiamen, China
| | - Zhongxian Lu
- State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, China.,Fujian Provincial Key Laboratory of Reproductive Health Research, Medical College of Xiamen University, Xiamen, China.,Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, Xiamen, China
| |
Collapse
|
5
|
Amirzadegan M, Sadeghi N, Tavalaee M, Nasr-Esfahani MH. Analysis of leukocyte and sperm telomere length in oligozoospermic men. Andrologia 2021; 53:e14204. [PMID: 34369610 DOI: 10.1111/and.14204] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/13/2021] [Accepted: 07/23/2021] [Indexed: 12/15/2022] Open
Abstract
Telomere length is considered one of the most relevant biological markers of genomic stability since it protects DNA from impairment and also ensures chromosome alignment during DNA replication. The negative impact of telomere shortening on sperm quality has been suggested as an important indicator of male infertility. Therefore, we aimed to assess leucocyte and sperm telomere length (LTL&STL), as well as sperm parameters, DNA damage and protamine deficiency in men with oligozoospermia as compared to fertile men. Our results demonstrated a significant reduction in sperm parameters (concentration, motility, morphology), LTL & STL and a significant increase in sperm DNA damage and protamine deficiency in oligozoospermic men compared with fertile individuals. These outcomes revealed that low sperm concentration in men is possibly a sign of impaired meiotic and/or meiotic division during the spermatogenesis process. It is not only associated with proper chromatin packaging but also with telomere length as a key player in the process of mitosis and meiosis, assisting in chromosomal alignment, pairing, synapsis and crossing over during spermatogenesis.
Collapse
Affiliation(s)
- Masoumeh Amirzadegan
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Niloofar Sadeghi
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Marziyeh Tavalaee
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Mohammad Hossein Nasr-Esfahani
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.,Isfahan Fertility and Infertility Center, Isfahan, Iran
| |
Collapse
|
6
|
Ignatieva EV, Osadchuk AV, Kleshchev MA, Bogomolov AG, Osadchuk LV. A Catalog of Human Genes Associated With Pathozoospermia and Functional Characteristics of These Genes. Front Genet 2021; 12:662770. [PMID: 34290736 PMCID: PMC8287579 DOI: 10.3389/fgene.2021.662770] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 04/26/2021] [Indexed: 11/24/2022] Open
Abstract
Genetic causes of the global decline in male fertility are among the hot spots of scientific research in reproductive genetics. The most common way to evaluate male fertility in clinical trials is to determine semen quality. Lower semen quality is very often accompanied by subfertility or infertility, occurs in many diseases and can be caused by many factors, including genetic ones. The following forms of lowered semen quality (pathozoospermia) are known: azoospermia, oligozoospermia, asthenozoospermia, teratozoospermia, and some combined forms. To systematize information about the genetic basis of impaired spermatogenesis, we created a catalog of human genes associated with lowered semen quality (HGAPat) and analyzed their functional characteristics. The catalog comprises data on 126 human genes. Each entry of the catalog describes an association between an allelic variant of the gene and a particular form of lowered semen quality, extracted from the experimental study. Most genes included into the catalog are located on autosomes and are associated with such pathologies as non-obstructive azoospermia, oligozoospermia or asthenozoospermia. Slightly less than half of the included genes (43%) are expressed in the testes in a tissue-specific manner. Functional annotation of genes from the catalog showed that spermatogenic failure can be associated with mutations in genes that control biological processes essential for spermiogenesis (regulating DNA metabolism, cell division, formation of cellular structures, which provide cell movement) as well as with mutations in genes that control cellular responses to unfavorable conditions (stress factors, including oxidative stress and exposure to toxins).
Collapse
Affiliation(s)
- Elena V Ignatieva
- The Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia.,Department of Natural Science, Novosibirsk State University, Novosibirsk, Russia
| | - Alexander V Osadchuk
- The Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Maxim A Kleshchev
- The Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Anton G Bogomolov
- The Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Ludmila V Osadchuk
- The Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| |
Collapse
|
7
|
SPATS1 (spermatogenesis-associated, serine-rich 1) is not essential for spermatogenesis and fertility in mouse. PLoS One 2021; 16:e0251028. [PMID: 33945571 PMCID: PMC8096103 DOI: 10.1371/journal.pone.0251028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 04/19/2021] [Indexed: 12/20/2022] Open
Abstract
SPATS1 (spermatogenesis-associated, serine-rich 1) is an evolutionarily conserved, testis-specific protein that is differentially expressed during rat male meiotic prophase. Some reports have suggested a link between SPATS1 underexpression/mutation and human pathologies such as male infertility and testicular cancer. Given the absence of functional studies, we generated a Spats1 loss-of-function mouse model using CRISPR/Cas9 technology. The phenotypic analysis showed no overt phenotype in Spats1-/- mice, with both males and females being fertile. Flow cytometry and histological analyses did not show differences in the testicular content and histology between WT and knockout mice. Moreover, no significant differences in sperm concentration, motility, and morphology, were observed between WT and KO mice. These results were obtained both for young adults and for aged animals. Besides, although an involvement of SPATS1 in the Wnt signaling pathway has been suggested, we did not detect changes in the expression levels of typical Wnt pathway-target genes in mutant individuals. Thus, albeit Spats1 alteration might be a risk factor for male testicular health, we hereby show that this gene is not individually essential for male fertility and spermatogenesis in mouse.
Collapse
|
8
|
Mostafa Nayel D, Salah El Din Mahrous H, El Din Khalifa E, Kholeif S, Mohamed Elhady G. The Effect of Teratozoospermia on Sex Chromosomes in Human Embryos. APPLICATION OF CLINICAL GENETICS 2021; 14:125-144. [PMID: 33732009 PMCID: PMC7959001 DOI: 10.2147/tacg.s299349] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 02/19/2021] [Indexed: 01/02/2023]
Abstract
Purpose The aim of this study is to evaluate the effect of abnormal semen morphology on the frequency of sex chromosomal abnormalities in embryos obtained by ICSI, which represents the first to be studied in Egyptian population. Methods Forty-two couples suffering from male infertility due to teratozoospermia were divided into two groups: patients with severe and moderate teratozoospermia (group A and B, respectively). All involved couples were subjected to careful history taking and had a normal clinical examination and karyotype. Females were subjected to hormonal assays, pelvic ultrasound, hysterosalpingography and yielded normal results, while male partners were subjected to computerized semen analysis. Preimplantation genetic diagnosis was performed for all suitably developed embryos including embryo biopsy, fixation of biopsied cells and fluorescent in situ hybridization (FISH) analysis. Results Couples included in the two groups were found to be homogenous in terms of age of both partners and duration of infertility. Interpretation of FISH results was performed by evaluation of embryos’ chromosomal constitution as regards abnormalities in chromosomes X, Y and 18. Twenty-seven embryos (48.2%) were found chromosomally abnormal in group A, while only 14 embryos (25.0%) were found chromosomally abnormal in group B. Aneuploidies involved only sex chromosomes were tripled in group A embryos when compared to their frequency in group B embryos (26.8% and 8.3%, respectively) with statistically significant difference between the two groups (p=0.002). Monosomies were the most common type of aneuploidy and were significantly higher in group A (14.3%) when compared to group B (3.6%) (p=0.047). Embryos with mosaic abnormalities were more common in group A (12.5%) when compared to group B (3.6%), however not statistically significantly different (p= 0.162). A significant difference between the two studied groups as regards the total number of potentially viable chromosomal abnormalities detected and the potentially viable sex chromosomal aneuploidies detected (p<0.001 and p=0.002), respectively. Conclusion The cases with severe teratozoospermia undergoing ICSI treatment can display a higher rate of sex chromosome aneuploidies in their embryos (threefold) than cases with moderate teratozoospermia.
Collapse
Affiliation(s)
- Dalia Mostafa Nayel
- Department of Human Genetics, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | | | - Emad El Din Khalifa
- Department of Obstetrics and Gynecology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Soha Kholeif
- Department of Human Genetics, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Ghada Mohamed Elhady
- Department of Human Genetics, Medical Research Institute, Alexandria University, Alexandria, Egypt
| |
Collapse
|
9
|
Geisinger A, Rodríguez-Casuriaga R, Benavente R. Transcriptomics of Meiosis in the Male Mouse. Front Cell Dev Biol 2021; 9:626020. [PMID: 33748111 PMCID: PMC7973102 DOI: 10.3389/fcell.2021.626020] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 02/15/2021] [Indexed: 12/18/2022] Open
Abstract
Molecular studies of meiosis in mammals have been long relegated due to some intrinsic obstacles, namely the impossibility to reproduce the process in vitro, and the difficulty to obtain highly pure isolated cells of the different meiotic stages. In the recent years, some technical advances, from the improvement of flow cytometry sorting protocols to single-cell RNAseq, are enabling to profile the transcriptome and its fluctuations along the meiotic process. In this mini-review we will outline the diverse methodological approaches that have been employed, and some of the main findings that have started to arise from these studies. As for practical reasons most studies have been carried out in males, and mostly using mouse as a model, our focus will be on murine male meiosis, although also including specific comments about humans. Particularly, we will center on the controversy about gene expression during early meiotic prophase; the widespread existing gap between transcription and translation in meiotic cells; the expression patterns and potential roles of meiotic long non-coding RNAs; and the visualization of meiotic sex chromosome inactivation from the RNAseq perspective.
Collapse
Affiliation(s)
- Adriana Geisinger
- Biochemistry-Molecular Biology, Facultad de Ciencias, Universidad de la República (UdelaR), Montevideo, Uruguay
- Department of Molecular Biology, Instituto de Investigaciones Biológicas Clemente Estable (IIBCE), Montevideo, Uruguay
| | - Rosana Rodríguez-Casuriaga
- Department of Molecular Biology, Instituto de Investigaciones Biológicas Clemente Estable (IIBCE), Montevideo, Uruguay
| | - Ricardo Benavente
- Department of Cell and Developmental Biology, Biocenter, University of Würzburg, Würzburg, Germany
| |
Collapse
|
10
|
Rodríguez-Casuriaga R, Geisinger A. Contributions of Flow Cytometry to the Molecular Study of Spermatogenesis in Mammals. Int J Mol Sci 2021; 22:1151. [PMID: 33503798 PMCID: PMC7865295 DOI: 10.3390/ijms22031151] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 01/12/2021] [Accepted: 01/17/2021] [Indexed: 12/18/2022] Open
Abstract
Mammalian testes are very heterogeneous organs, with a high number of different cell types. Testicular heterogeneity, together with the lack of reliable in vitro culture systems of spermatogenic cells, have been an obstacle for the characterization of the molecular bases of the unique events that take place along the different spermatogenic stages. In this context, flow cytometry has become an invaluable tool for the analysis of testicular heterogeneity, and for the purification of stage-specific spermatogenic cell populations, both for basic research and for clinical applications. In this review, we highlight the importance of flow cytometry for the advances on the knowledge of the molecular groundwork of spermatogenesis in mammals. Moreover, we provide examples of different approaches to the study of spermatogenesis that have benefited from flow cytometry, including the characterization of mutant phenotypes, transcriptomics, epigenetic and genome-wide chromatin studies, and the attempts to establish cell culture systems for research and/or clinical aims such as infertility treatment.
Collapse
Affiliation(s)
- Rosana Rodríguez-Casuriaga
- Department of Molecular Biology, Instituto de Investigaciones Biológicas Clemente Estable (IIBCE), 11600 Montevideo, Uruguay
| | - Adriana Geisinger
- Department of Molecular Biology, Instituto de Investigaciones Biológicas Clemente Estable (IIBCE), 11600 Montevideo, Uruguay
- Biochemistry-Molecular Biology, Facultad de Ciencias, Universidad de la República (UdelaR), 11400 Montevideo, Uruguay
| |
Collapse
|
11
|
UHRF1-repressed 5'-hydroxymethylcytosine is essential for the male meiotic prophase I. Cell Death Dis 2020; 11:142. [PMID: 32081844 PMCID: PMC7035279 DOI: 10.1038/s41419-020-2333-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 01/29/2020] [Accepted: 01/30/2020] [Indexed: 12/23/2022]
Abstract
5’-hydroxymethylcytosine (5hmC), an important 5’-cytosine modification, is altered highly in order in male meiotic prophase. However, the regulatory mechanism of this dynamic change and the function of 5hmC in meiosis remain largely unknown. Using a knockout mouse model, we showed that UHRF1 regulated male meiosis. UHRF1 deficiency led to failure of meiosis and male infertility. Mechanistically, the deficiency of UHRF1 altered significantly the meiotic gene profile of spermatocytes. Uhrf1 knockout induced an increase of the global 5hmC level. The enrichment of hyper-5hmC at transcriptional start sites (TSSs) was highly associated with gene downregulation. In addition, the elevated level of the TET1 enzyme might have contributed to the higher 5hmC level in the Uhrf1 knockout spermatocytes. Finally, we reported Uhrf1, a key gene in male meiosis, repressed hyper-5hmC by downregulating TET1. Furthermore, UHRF1 facilitated RNA polymerase II (RNA-pol2) loading to promote gene transcription. Thus our study demonstrated a potential regulatory mechanism of 5hmC dynamic change and its involvement in epigenetic regulation in male meiosis.
Collapse
|
12
|
The Role of Number of Copies, Structure, Behavior and Copy Number Variations (CNV) of the Y Chromosome in Male Infertility. Genes (Basel) 2019; 11:genes11010040. [PMID: 31905733 PMCID: PMC7016774 DOI: 10.3390/genes11010040] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/17/2019] [Accepted: 12/23/2019] [Indexed: 12/11/2022] Open
Abstract
The World Health Organization (WHO) defines infertility as the inability of a sexually active, non-contracepting couple to achieve spontaneous pregnancy within one year. Statistics show that the two sexes are equally at risk. Several causes may be responsible for male infertility; however, in 30–40% of cases a diagnosis of idiopathic male infertility is made in men with normal urogenital anatomy, no history of familial fertility-related diseases and a normal panel of values as for endocrine, genetic and biochemical markers. Idiopathic male infertility may be the result of gene/environment interactions, genetic and epigenetic abnormalities. Numerical and structural anomalies of the Y chromosome represent a minor yet significant proportion and are the topic discussed in this review. We searched the PubMed database and major search engines for reports about Y-linked male infertility. We present cases of Y-linked male infertility in terms of (i) anomalies of the Y chromosome structure/number; (ii) Y chromosome misbehavior in a normal genetic background; (iii) Y chromosome copy number variations (CNVs). We discuss possible explanations of male infertility caused by mutations, lower or higher number of copies of otherwise wild type, Y-linked sequences. Despite Y chromosome structural anomalies are not a major cause of male infertility, in case of negative results and of normal DNA sequencing of the ascertained genes causing infertility and mapping on this chromosome, we recommend an analysis of the karyotype integrity in all cases of idiopathic fertility impairment, with an emphasis on the structure and number of this chromosome.
Collapse
|
13
|
Meiotic arrest occurs most frequently at metaphase and is often incomplete in azoospermic men. Fertil Steril 2019; 112:1059-1070.e3. [PMID: 31767154 DOI: 10.1016/j.fertnstert.2019.08.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 06/28/2019] [Accepted: 08/06/2019] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To establish which meiotic checkpoints are activated in males with severe spermatogenic impairment to improve phenotypic characterization of meiotic defects. DESIGN Retrospective observational study. SETTING University medical center research laboratory and andrology clinic. PATIENT(S) Forty-eight patients with confirmed spermatogenic impairment (Johnsen scores 3-6) and 15 controls (Johnsen score 10). INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Quantitative assessment of immunofluorescent analyses of specific markers to determine meiotic entry, chromosome pairing, progression of DNA double-strand break repair, crossover formation, formation of meiotic metaphases, metaphase arrest, and spermatid formation, resulting in a novel classification of human meiotic arrest types. RESULT(S) Complete metaphase arrest was observed most frequently (27%), and the patients with the highest frequency of apoptotic metaphases also displayed a reduction in crossover number. Incomplete metaphase arrest was observed in 17% of the patients. Only four patients (8%) displayed a failure to complete meiotic chromosome pairing leading to pachytene arrest. Two new types of meiotic arrest were defined: premetaphase and postmetaphase arrest (15% and 13%, respectively). CONCLUSION(S) Meiotic arrest in men occurs most frequently at meiotic metaphase. This arrest can be incomplete, resulting in low numbers of spermatids, and often occurs in association with reduced crossover frequency. The phenotyping approach described here provides mechanistic insights to help identify candidate infertility genes and to assess genotype-phenotype correlations in individual cases.
Collapse
|
14
|
Araujo TF, Friedrich C, Grangeiro CHP, Martelli LR, Grzesiuk JD, Emich J, Wyrwoll MJ, Kliesch S, Simões AL, Tüttelmann F. Sequence analysis of 37 candidate genes for male infertility: challenges in variant assessment and validating genes. Andrology 2019; 8:434-441. [PMID: 31479588 DOI: 10.1111/andr.12704] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/20/2019] [Accepted: 08/26/2019] [Indexed: 12/25/2022]
Abstract
BACKGROUND The routine genetic analysis for diagnosing male infertility has not changed over the last twenty years, and currently available tests can only determine the etiology of 4% of unselected infertile patients. Thus, to create new diagnostic assays, we must better understand the molecular and genetic mechanisms of male infertility. Although next-generation sequencing allows for simultaneous analysis of hundreds of genes and the discovery of novel candidates related to male infertility, so far only a few gene candidates have enough sound evidence to support the gene-disease relationship. OBJECTIVE Since complementary studies are required to validate genes, we aimed to analyze the presence of potentially pathogenic rare variants in a set of candidate genes related to azoospermia in a hitherto understudied South American population. SUBJECTS AND METHODS We performed whole exome sequencing in a group of 16 patients with non-obstructive azoospermia from Ribeirão Preto, Brazil. Based on a recent systematic review of monogenic causes of male infertility, we selected a set of 37 genes related to azoospermia, Sertoli-Cell-Only histology, and spermatogenic arrest to analyze. The identified variants were confirmed by Sanger sequencing, and their functional consequence was predicted by in silico programs. RESULTS We identified potential pathogenic variants in seven genes in six patients. Two variants, c.671A>G (p.(Asn224Ser)) in DMRT1 and c.91C>T (p.(Arg31Cys)) in REC8, have already been described in association with azoospermia. We also found new variants in genes that already have moderate evidence of being linked to spermatogenic failure (TEX15, KLHL10), in genes with limited evidence (DNMT3B, TEX14) and in one novel promising candidate gene that has no evidence so far (SYCE1L). DISCUSSION Although this study included a small number of patients, the process of rationally selecting genes allowed us to detect rare potentially pathogenic variants, providing supporting evidence for validating candidate genes associated with azoospermia.
Collapse
Affiliation(s)
- T F Araujo
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - C Friedrich
- Institute of Human Genetics, University of Münster, Münster, Germany
| | - C H P Grangeiro
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - L R Martelli
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - J D Grzesiuk
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - J Emich
- Institute of Human Genetics, University of Münster, Münster, Germany
| | - M J Wyrwoll
- Institute of Human Genetics, University of Münster, Münster, Germany
| | - S Kliesch
- Centre of Reproductive Medicine and Andrology, Department of Clinical and Surgical Andrology, University Hospital Münster, Münster, Germany
| | - A L Simões
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - F Tüttelmann
- Institute of Human Genetics, University of Münster, Münster, Germany
| |
Collapse
|
15
|
Ioannou D, Tempest HG. Does genome organization matter in spermatozoa? A refined hypothesis to awaken the silent vessel. Syst Biol Reprod Med 2018; 64:518-534. [DOI: 10.1080/19396368.2017.1421278] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Dimitrios Ioannou
- Department of Human and Molecular Genetics, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
- IVF Florida Reproductive Associates, Margate, FL, USA
| | - Helen G. Tempest
- Department of Human and Molecular Genetics, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
- Biomolecular Sciences Institute, Florida International University, Miami, FL, USA
| |
Collapse
|
16
|
Xu Z, Song Z, Li G, Tu H, Liu W, Liu Y, Wang P, Wang Y, Cui X, Liu C, Shang Y, de Rooij DG, Gao F, Li W. H2B ubiquitination regulates meiotic recombination by promoting chromatin relaxation. Nucleic Acids Res 2016; 44:9681-9697. [PMID: 27431324 PMCID: PMC5175339 DOI: 10.1093/nar/gkw652] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Accepted: 07/11/2016] [Indexed: 12/22/2022] Open
Abstract
Meiotic recombination is essential for fertility in most sexually reproducing species, but the molecular mechanisms underlying this process remain poorly understood in mammals. Here, we show that RNF20-mediated H2B ubiquitination is required for meiotic recombination. A germ cell-specific knockout of the H2B ubiquitination E3 ligase RNF20 results in complete male infertility. The Stra8-Rnf20−/− spermatocytes arrest at the pachytene stage because of impaired programmed double-strand break (DSB) repair. Further investigations reveal that the depletion of RNF20 in the germ cells affects chromatin relaxation, thus preventing programmed DSB repair factors from being recruited to proper positions on the chromatin. The gametogenetic defects of the H2B ubiquitination deficient cells could be partially rescued by forced chromatin relaxation. Taken together, our results demonstrate that RNF20/Bre1p-mediated H2B ubiquitination regulates meiotic recombination by promoting chromatin relaxation, and suggest an old drug may provide a new way to treat some oligo- or azoospermia patients with chromatin relaxation disorders.
Collapse
Affiliation(s)
- Zhiliang Xu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Zhenhua Song
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Guoping Li
- The Key Laboratory of Geriatrics, Beijing Hospital and Beijing Institute of Geriatrics, Ministry of Health, Beijing 100730, China
| | - Huayu Tu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Weixiao Liu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yujiao Liu
- College of Marine Life, Ocean University of China, Qingdao 266003, China
| | - Pan Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yuanting Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Xiuhong Cui
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Chao Liu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Yongliang Shang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Dirk G de Rooij
- Reproductive Biology Group, Division of Developmental Biology, Department of Biology, Faculty of Science, Utrecht University, Padualaan 8, 3584 Utrecht, the Netherlands
| | - Fei Gao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Wei Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| |
Collapse
|
17
|
Song W, Zhao W, Yang Q, Wang X, Jin H, Yao G, Peng Z, Shi S, Yang H, Sun Y. Effect of rapid cryopreservation on meiotic recombination in human spermatocytes. Microsc Res Tech 2016; 79:923-928. [PMID: 27427884 DOI: 10.1002/jemt.22723] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 06/07/2016] [Accepted: 06/28/2016] [Indexed: 11/10/2022]
Abstract
OBJECTIVE To evaluate the safety of rapid cryopreservation for human testicular tissues by comparing the meiotic recombination in the fresh and thawed testis after rapid freezing. METHODS Twelve male patients with prostate cancer (PC) who had given birth to healthy children at youth and need to receive surgical removal of testicular tissue at present were selected in this study. Testicular tissues from 4 cases of PC patients were randomly divided into two parts, one part as fresh tissue and the other to receive rapid freezing treatment. Fidelity analysis for homologous genetic recombination and synapsis were performed by immunofluorescence after prepared by a micro-spreading technique. RESULTS The average number of MLH1 foci per cell, autosomal synaptonemal complex (SC) containing 0∼5 MLH1 foci and percent of cells with one MLH1 focus on XY chromosome showed no difference between the fresh and frozen thawed testicular tissues from the same case (P >0.05). And, no significant difference in the frequency of gaps and splits on SCs was observed in fresh and thawed spermatocytes (P > 0.05). CONCLUSION Rapid cryopreservation showed little effect on the frequency of meiotic recombination and fidelity of synapsis in human spermatocytes from PC patients, and acted as an effective method for preserving male fertility.
Collapse
Affiliation(s)
- Wenyan Song
- Reproductive Medicine Center, the First Affiliated Hospital of Zhengzhou University, Zhenzhou, 450052, Henan, People's Republic of China
| | - Wanli Zhao
- Reproductive Medicine Center, the First Affiliated Hospital of Zhengzhou University, Zhenzhou, 450052, Henan, People's Republic of China.,Reproductive Department, the Women&infants Hospital of Zhenzhou, Zhenzhou, 450000, Henan, People's Republic of China
| | - Qinglin Yang
- Reproductive Medicine Center, the First Affiliated Hospital of Zhengzhou University, Zhenzhou, 450052, Henan, People's Republic of China
| | - Xuegai Wang
- Reproductive Medicine Center, the First Affiliated Hospital of Zhengzhou University, Zhenzhou, 450052, Henan, People's Republic of China.,Reproductive Department, the Women&infants Hospital of Zhenzhou, Zhenzhou, 450000, Henan, People's Republic of China
| | - Haixia Jin
- Reproductive Medicine Center, the First Affiliated Hospital of Zhengzhou University, Zhenzhou, 450052, Henan, People's Republic of China
| | - Guidong Yao
- Reproductive Medicine Center, the First Affiliated Hospital of Zhengzhou University, Zhenzhou, 450052, Henan, People's Republic of China
| | - Zhaofeng Peng
- Reproductive Medicine Center, the First Affiliated Hospital of Zhengzhou University, Zhenzhou, 450052, Henan, People's Republic of China
| | - Senlin Shi
- Reproductive Medicine Center, the First Affiliated Hospital of Zhengzhou University, Zhenzhou, 450052, Henan, People's Republic of China
| | - Hongyi Yang
- Reproductive Medicine Center, the First Affiliated Hospital of Zhengzhou University, Zhenzhou, 450052, Henan, People's Republic of China
| | - Yingpu Sun
- Reproductive Medicine Center, the First Affiliated Hospital of Zhengzhou University, Zhenzhou, 450052, Henan, People's Republic of China.
| |
Collapse
|
18
|
Dattilo M, D'Amato G, Caroppo E, Ménézo Y. Improvement of gamete quality by stimulating and feeding the endogenous antioxidant system: mechanisms, clinical results, insights on gene-environment interactions and the role of diet. J Assist Reprod Genet 2016; 33:1633-1648. [PMID: 27423667 PMCID: PMC5171888 DOI: 10.1007/s10815-016-0767-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 06/30/2016] [Indexed: 01/21/2023] Open
Abstract
Oxidative damage triggers extensive repair in gametes and thereafter in the zygote but it results in clinically relevant damage when affecting the maturation of the gametes chromatin, i.e. padlocking and epigenetic marking. It associates with defective DNA methylation and/or with oxidation of the methyl marks leading to derangement of gamete epigenetics, defects of chromatin condensation and aneuploidy. A proper feed to the one carbon cycle has the potential to stimulate the endogenous antioxidant defences, i.e. gluthatione synthesis, and to activate compensative homeostatic mechanisms restoring both the oxy-redox balance and DNA methylation, which are indeed strictly cross-regulated. This has been shown to produce measurable clinical improvements of male reproductive potential in pilot studies herein summarised. However, the effects of dietary habits and of supplementations are variable according to the individual genetic substrate, as genetic variants of several of the concerned enzymes occur with high frequency. Individual risk assessments and personalised interventions are still difficult to implement, in the meantime, a very varied diet may facilitate metabolic compensation in the majority of the cases. This review aims to report on the mechanisms of damage, on the opportunities to modulate the physiologic oxy-redox homeostasis by means of a varied diet or dietary supplements and on the open issues related to the genetic variability of the population.
Collapse
Affiliation(s)
| | - Giuseppe D'Amato
- ASL Bari, U.O. Fisiopatologia della Riproduzione Umana e PMA, Conversano, Ba, Italy
| | - Ettore Caroppo
- ASL Bari, U.O. Fisiopatologia della Riproduzione Umana e PMA, Conversano, Ba, Italy
| | - Yves Ménézo
- London Fertility Associates, 104 Harley Street, London, UK
| |
Collapse
|
19
|
Song WY, Yang QL, Zhao WL, Jin HX, Yao GD, Peng ZF, Shi SL, Yang HY, Zhang XY, Sun YP. The effects of anticancer drugs TSA and GSK on spermatogenesis in male mice. Am J Transl Res 2016; 8:221-229. [PMID: 27069555 PMCID: PMC4759431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 10/13/2015] [Indexed: 06/05/2023]
Abstract
OBJECTIVE The effect of anticancer drugs Trichostation A (TSA) and GSK2126458 (GSK) on genetic recombination of sperm meiosis in mice was investigated, and their clinical feasibility of fertility preservation in cancer patients was also assessed. METHODS Eighteen Kunming mice were randomly given TSA or GSK at the concentrations of 0, 0.1 and 0.2 umol/L for three months. Immunofluorescence was used to evaluate the genetic recombination of homologous chromosomes and fidelity of chromosome synapsis. Sperm density, motility and viability were also examined to investigate the spermatogenic function. RESULTS The average number of MLH1 foci in each spermatocyte was greatly higher in TSA (0.1) group than that in control (P<0.05), but no difference with the TSA (0.2) group (P>0.05). The frequency of SC with no MLH1 foci was lower while the frequency of SC with one MLH1 foci was higher in spermatocyte of mice with different doses of TSA compared with controls (P<0.05). The weight of left testis in TSA (0.1) group was significant decreased compared with that in control (P<0.05). However, no significant differences were observed in average number of MLH1, frequency of SC with 0-3 MLH1 foci, spermatocyte percentage of XY chromosomes containing MLH1 foci and percentages of cells containing gaps and splits among groups with or without the treatment of GSK. Furthermore, there were no statistical differences in body weight, testicular weight, sperm density, sperm motility and sperm viability among the three groups. CONCLUSION TSA increased genetic recombination frequency of spermatocyte meiosis. GSK had no significant effect on genetic recombination frequency of spermatocyte meiosis and spermatogenic function.
Collapse
Affiliation(s)
- Wen-Yan Song
- Reproductive Medicine Center, The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052, China
| | - Qing-Ling Yang
- Reproductive Medicine Center, The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052, China
| | - Wan-Li Zhao
- Reproductive Medicine Center, Zhengzhou Maternal and Child Health HospitalZhengzhou 450012, China
| | - Hai-Xia Jin
- Reproductive Medicine Center, The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052, China
| | - Gui-Dong Yao
- Reproductive Medicine Center, The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052, China
| | - Zhao-Feng Peng
- Reproductive Medicine Center, The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052, China
| | - Sen-Lin Shi
- Reproductive Medicine Center, The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052, China
| | - Hong-Yi Yang
- Reproductive Medicine Center, The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052, China
| | - Xiang-Yang Zhang
- Reproductive Medicine Center, The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052, China
| | - Ying-Pu Sun
- Reproductive Medicine Center, The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052, China
| |
Collapse
|
20
|
Abstract
The paternal contribution to fertilization and embryogenesis is frequently overlooked as the spermatozoon is often considered to be a silent vessel whose only function is to safely deliver the paternal genome to the maternal oocyte. In this article, we hope to demonstrate that this perception is far from the truth. Typically, infertile men have been unable to conceive naturally (or through regular IVF), and therefore, a perturbation of the genetic integrity of sperm heads in infertile males has been under-considered. The advent of intracytoplasmic sperm injection (ICSI) however has led to very successful treatment of male factor infertility and subsequent widespread use in IVF clinics worldwide. Until recently, little concern has been raised about the genetic quality of sperm in ICSI patients or the impact genetic aberrations could have on fertility and embryogenesis. This review highlights the importance of chromatin packaging in the sperm nucleus as essential for the establishment and maintenance of a viable pregnancy.
Collapse
|
21
|
Telomere homeostasis in mammalian germ cells: a review. Chromosoma 2015; 125:337-51. [DOI: 10.1007/s00412-015-0555-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 10/19/2015] [Accepted: 10/20/2015] [Indexed: 02/03/2023]
|
22
|
Ahmadi Rastegar D, Sharifi Tabar M, Alikhani M, Parsamatin P, Sahraneshin Samani F, Sabbaghian M, Sadighi Gilani MA, Mohammad Ahadi A, Mohseni Meybodi A, Piryaei A, Ansari-Pour N, Gourabi H, Baharvand H, Salekdeh GH. Isoform-Level Gene Expression Profiles of Human Y Chromosome Azoospermia Factor Genes and Their X Chromosome Paralogs in the Testicular Tissue of Non-Obstructive Azoospermia Patients. J Proteome Res 2015; 14:3595-605. [PMID: 26162009 DOI: 10.1021/acs.jproteome.5b00520] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The human Y chromosome has an inevitable role in male fertility because it contains many genes critical for spermatogenesis and the development of the male gonads. Any genetic variation or epigenetic modification affecting the expression pattern of Y chromosome genes may thus lead to male infertility. In this study, we performed isoform-level gene expression profiling of Y chromosome genes within the azoospermia factor (AZF) regions, their X chromosome counterparts, and few autosomal paralogues in testicular biopsies of 12 men with preserved spermatogenesis and 68 men with nonobstructive azoospermia (NOA) (40 Sertoli-cell-only syndrome (SCOS) and 28 premiotic maturation arrest (MA)). This was undertaken using quantitative real-time PCR (qPCR) at the transcript level and Western blotting (WB) and immunohistochemistry (IHC) at the protein level. We profiled the expression of 41 alternative transcripts encoded by 14 AZFa, AZFb, and AZFc region genes (USP9Y, DDX3Y, XKRY, HSFY1, CYORF15A, CYORF15B, KDM5D, EIF1AY, RPS4Y2, RBMY1A1, PRY, BPY2, DAZ1, and CDY1) as well as their X chromosome homologue transcripts and a few autosomal homologues. Of the 41 transcripts, 18 were significantly down-regulated in men with NOA when compared with those of men with complete spermatogenesis. In contrast, the expression of five transcripts increased significantly in NOA patients. Furthermore, to confirm the qPCR results at the protein level, we performed immunoblotting and IHC experiments (based on 24 commercial and homemade antibodies) that detected 10 AZF-encoded proteins. In addition, their localization in testis cell types and organelles was determined. Interestingly, the two missing proteins, XKRY and CYORF15A, were detected for the first time. Finally, we focused on the expression patterns of the significantly altered genes in 12 MA patients with successful sperm retrieval compared to those of 12 MA patients with failed sperm retrieval to predict the success of sperm retrieval in azoospermic men. We showed that HSFY1-1, HSFY1-3, BPY2-1, KDM5C2, RBMX2, and DAZL1 transcripts could be used as potential molecular markers to predict the presence of spermatozoa in MA patients. In this study, we have identified isoform level signature that can be used to discriminate effectively between MA, SCOS, and normal testicular tissues and suggests the possibility of diagnosing the presence of mature sperm cell in azoospermic men to prevent additional testicular sperm extraction (TESE) surgery.
Collapse
Affiliation(s)
- Diba Ahmadi Rastegar
- Department of Molecular Systems Biology, ‡Stem Cells and Developmental Biology Group, and ∇Department of Stem Cells and Developmental Biology at Cell Science Research Center, §Department of Andrology and ⊥Department of Genetics at Reproductive Biomedicine Research Center, Royan Institute for Stem Cell Biology and Technology, and ○Department of Developmental Biology, University of Science and Culture, ACECR , Tehran, Iran
| | - Mehdi Sharifi Tabar
- Department of Molecular Systems Biology, ‡Stem Cells and Developmental Biology Group, and ∇Department of Stem Cells and Developmental Biology at Cell Science Research Center, §Department of Andrology and ⊥Department of Genetics at Reproductive Biomedicine Research Center, Royan Institute for Stem Cell Biology and Technology, and ○Department of Developmental Biology, University of Science and Culture, ACECR , Tehran, Iran
| | - Mehdi Alikhani
- Department of Molecular Systems Biology, ‡Stem Cells and Developmental Biology Group, and ∇Department of Stem Cells and Developmental Biology at Cell Science Research Center, §Department of Andrology and ⊥Department of Genetics at Reproductive Biomedicine Research Center, Royan Institute for Stem Cell Biology and Technology, and ○Department of Developmental Biology, University of Science and Culture, ACECR , Tehran, Iran
| | - Pouria Parsamatin
- Department of Molecular Systems Biology, ‡Stem Cells and Developmental Biology Group, and ∇Department of Stem Cells and Developmental Biology at Cell Science Research Center, §Department of Andrology and ⊥Department of Genetics at Reproductive Biomedicine Research Center, Royan Institute for Stem Cell Biology and Technology, and ○Department of Developmental Biology, University of Science and Culture, ACECR , Tehran, Iran
| | | | | | | | - Ali Mohammad Ahadi
- Department of Genetics, Faculty of Science, Shahrekord University , Shahrekord, Iran
| | | | - Abbas Piryaei
- Anatomy and Cell Biology Department, School of Medicine, Shahid Beheshti University of Medical Sciences , Tehran, Iran
| | - Naser Ansari-Pour
- Faculty of New Sciences and Technology, University of Tehran , Tehran, Iran
| | | | | | - Ghasem Hosseini Salekdeh
- Department of Molecular Systems Biology, ‡Stem Cells and Developmental Biology Group, and ∇Department of Stem Cells and Developmental Biology at Cell Science Research Center, §Department of Andrology and ⊥Department of Genetics at Reproductive Biomedicine Research Center, Royan Institute for Stem Cell Biology and Technology, and ○Department of Developmental Biology, University of Science and Culture, ACECR , Tehran, Iran.,Department of Systems Biology, Agricultural Biotechnology Research Institute of Iran , Karaj, Iran
| |
Collapse
|
23
|
Meiotic Nondisjunction: Insights into the Origin and Significance of Aneuploidy in Human Spermatozoa. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 868:1-21. [DOI: 10.1007/978-3-319-18881-2_1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
24
|
Hou Y, Fan W, Yan L, Li R, Lian Y, Huang J, Li J, Xu L, Tang F, Xie XS, Qiao J. Genome analyses of single human oocytes. Cell 2014; 155:1492-506. [PMID: 24360273 DOI: 10.1016/j.cell.2013.11.040] [Citation(s) in RCA: 230] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 10/31/2013] [Accepted: 11/25/2013] [Indexed: 11/16/2022]
Abstract
Single-cell genome analyses of human oocytes are important for meiosis research and preimplantation genomic screening. However, the nonuniformity of single-cell whole-genome amplification hindered its use. Here, we demonstrate genome analyses of single human oocytes using multiple annealing and looping-based amplification cycle (MALBAC)-based sequencing technology. By sequencing the triads of the first and second polar bodies (PB1 and PB2) and the oocyte pronuclei from same female egg donors, we phase the genomes of these donors with detected SNPs and determine the crossover maps of their oocytes. Our data exhibit an expected crossover interference and indicate a weak chromatid interference. Further, the genome of the oocyte pronucleus, including information regarding aneuploidy and SNPs in disease-associated alleles, can be accurately deduced from the genomes of PB1 and PB2. The MALBAC-based preimplantation genomic screening in in vitro fertilization (IVF) enables accurate and cost-effective selection of normal fertilized eggs for embryo transfer.
Collapse
Affiliation(s)
- Yu Hou
- Biodynamic Optical Imaging Center, College of Life Sciences and Center for Reproductive Medicine, Third Hospital, Peking University, Beijing 100871, China
| | - Wei Fan
- Biodynamic Optical Imaging Center, College of Life Sciences and Center for Reproductive Medicine, Third Hospital, Peking University, Beijing 100871, China; Peking-Tsinghua Center for Life Science, Beijing 100084, China
| | - Liying Yan
- Biodynamic Optical Imaging Center, College of Life Sciences and Center for Reproductive Medicine, Third Hospital, Peking University, Beijing 100871, China
| | - Rong Li
- Biodynamic Optical Imaging Center, College of Life Sciences and Center for Reproductive Medicine, Third Hospital, Peking University, Beijing 100871, China
| | - Ying Lian
- Biodynamic Optical Imaging Center, College of Life Sciences and Center for Reproductive Medicine, Third Hospital, Peking University, Beijing 100871, China
| | - Jin Huang
- Biodynamic Optical Imaging Center, College of Life Sciences and Center for Reproductive Medicine, Third Hospital, Peking University, Beijing 100871, China
| | - Jinsen Li
- Biodynamic Optical Imaging Center, College of Life Sciences and Center for Reproductive Medicine, Third Hospital, Peking University, Beijing 100871, China
| | - Liya Xu
- Biodynamic Optical Imaging Center, College of Life Sciences and Center for Reproductive Medicine, Third Hospital, Peking University, Beijing 100871, China
| | - Fuchou Tang
- Biodynamic Optical Imaging Center, College of Life Sciences and Center for Reproductive Medicine, Third Hospital, Peking University, Beijing 100871, China; Ministry of Education Key Laboratory of Cell Proliferation and Differentiation, Beijing 100871, China.
| | - X Sunney Xie
- Biodynamic Optical Imaging Center, College of Life Sciences and Center for Reproductive Medicine, Third Hospital, Peking University, Beijing 100871, China; Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA.
| | - Jie Qiao
- Biodynamic Optical Imaging Center, College of Life Sciences and Center for Reproductive Medicine, Third Hospital, Peking University, Beijing 100871, China; Key Laboratory of Assisted Reproduction, Ministry of Education and Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China.
| |
Collapse
|
25
|
Wiland E, Olszewska M, Georgiadis A, Huleyuk N, Panasiuk B, Zastavna D, Yatsenko SA, Jedrzejczak P, Midro AT, Yatsenko AN, Kurpisz M. Cytogenetic and molecular analyses of de novo translocation dic(9;13)(p11.2;p12) in an infertile male. Mol Cytogenet 2014; 7:14. [PMID: 24559467 PMCID: PMC3944724 DOI: 10.1186/1755-8166-7-14] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Accepted: 01/30/2014] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Whole arm t(9;13)(p11;p12) translocations are rare and have been described only a few times; all of the previously reported cases were familial. RESULTS We present here an infertile male carrier with a whole-arm reciprocal translocation dic(9;13)(p11.2;p12) revealed by GTG-, C-, and NOR-banding karyotypes with no mature sperm cells in his ejaculate. FISH and genome-wide 400 K CGH microarray (Agilent) analyses demonstrated a balanced chromosome complement and further characterised the abnormality as a dicentric chromosome (9;13): dic(9;13)(pter→p11.2::p12→qter),neo(9)(pter→p12→neo→p11.2). An analysis of the patient's ejaculated cells identified immature germ cells at different phases of spermatogenesis but no mature spermatozoa. Most (82.5%) of the germ cells were recognised as spermatocytes at stage I, and the cell nuclei were most frequently found in pachytene I (41.8%). We have also undertaken FISH analysis and documented an increased rate of aneuploidy of chromosomes 15, 18, X and Y in the peripheral blood leukocytes of our patient. To study the aneuploidy risk in leukocytes, we have additionally included 9 patients with non-obstructive azoospermia with normal karyotypes. CONCLUSIONS We propose that the azoospermia observed in the patient with the dic(9;13)(p11.2;p12) translocation was most likely a consequence of a very high proportion (90%) of association between XY bivalents and quadrivalent formations in prophase I.
Collapse
Affiliation(s)
- Ewa Wiland
- Institute of Human Genetics Polish Academy of Sciences, Department of Reproductive Biology and Stem Cells, Strzeszynska 32, Poznan 60-479, Poland
| | - Marta Olszewska
- Institute of Human Genetics Polish Academy of Sciences, Department of Reproductive Biology and Stem Cells, Strzeszynska 32, Poznan 60-479, Poland
| | - Andrew Georgiadis
- Department of OBGYN and Reproductive Sciences, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Nataliya Huleyuk
- Institute of Hereditary Pathology, Ukrainian Academy of Medical Sciences, Lysenka 31A, Lviv 79000, Ukraine
| | - Barbara Panasiuk
- Department of Clinical Genetics, Medical University Bialystok, Waszyngtona 13, Bialystok 15-089, Poland
| | - Danuta Zastavna
- Institute of Hereditary Pathology, Ukrainian Academy of Medical Sciences, Lysenka 31A, Lviv 79000, Ukraine
| | - Svetlana A Yatsenko
- Department of OBGYN and Reproductive Sciences, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Piotr Jedrzejczak
- Division of Infertility and Reproductive Endocrinology, Department of Gynecology and Obstetrics, Karol Marcinkowski University of Medical Sciences, Poznan, Poland
| | - Alina T Midro
- Department of Clinical Genetics, Medical University Bialystok, Waszyngtona 13, Bialystok 15-089, Poland
| | - Alexander N Yatsenko
- Department of OBGYN and Reproductive Sciences, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Maciej Kurpisz
- Institute of Human Genetics Polish Academy of Sciences, Department of Reproductive Biology and Stem Cells, Strzeszynska 32, Poznan 60-479, Poland
| |
Collapse
|
26
|
iRSpot-TNCPseAAC: identify recombination spots with trinucleotide composition and pseudo amino acid components. Int J Mol Sci 2014; 15:1746-66. [PMID: 24469313 PMCID: PMC3958819 DOI: 10.3390/ijms15021746] [Citation(s) in RCA: 211] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Revised: 01/14/2014] [Accepted: 01/16/2014] [Indexed: 01/22/2023] Open
Abstract
Meiosis and recombination are the two opposite aspects that coexist in a DNA system. As a driving force for evolution by generating natural genetic variations, meiotic recombination plays a very important role in the formation of eggs and sperm. Interestingly, the recombination does not occur randomly across a genome, but with higher probability in some genomic regions called “hotspots”, while with lower probability in so-called “coldspots”. With the ever-increasing amount of genome sequence data in the postgenomic era, computational methods for effectively identifying the hotspots and coldspots have become urgent as they can timely provide us with useful insights into the mechanism of meiotic recombination and the process of genome evolution as well. To meet the need, we developed a new predictor called “iRSpot-TNCPseAAC”, in which a DNA sample was formulated by combining its trinucleotide composition (TNC) and the pseudo amino acid components (PseAAC) of the protein translated from the DNA sample according to its genetic codes. The former was used to incorporate its local or short-rage sequence order information; while the latter, its global and long-range one. Compared with the best existing predictor in this area, iRSpot-TNCPseAAC achieved higher rates in accuracy, Mathew’s correlation coefficient, and sensitivity, indicating that the new predictor may become a useful tool for identifying the recombination hotspots and coldspots, or, at least, become a complementary tool to the existing methods. It has not escaped our notice that the aforementioned novel approach to incorporate the DNA sequence order information into a discrete model may also be used for many other genome analysis problems. The web-server for iRSpot-TNCPseAAC is available at http://www.jci-bioinfo.cn/iRSpot-TNCPseAAC. Furthermore, for the convenience of the vast majority of experimental scientists, a step-by-step guide is provided on how to use the current web server to obtain their desired result without the need to follow the complicated mathematical equations.
Collapse
|
27
|
Zorrilla M, Yatsenko AN. The Genetics of Infertility: Current Status of the Field. CURRENT GENETIC MEDICINE REPORTS 2013; 1:10.1007/s40142-013-0027-1. [PMID: 24416713 PMCID: PMC3885174 DOI: 10.1007/s40142-013-0027-1] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Infertility is a relatively common health condition, affecting nearly 7% of all couples. Clinically, it is a highly heterogeneous pathology with a complex etiology that includes environmental and genetic factors. It has been estimated that nearly 50% of infertility cases are due to genetic defects. Hundreds of studies with animal knockout models convincingly showed infertility to be caused by gene defects, single or multiple. However, despite enormous efforts, progress in translating basic research findings into clinical studies has been challenging. The genetic causes remain unexplained for the vast majority of male or female infertility patients. A particular difficulty is the huge number of candidate genes to be studied; there are more than 2,300 genes expressed in the testis alone, and hundreds of those genes influence reproductive function in humans and could contribute to male infertility. At present, there are only a handful of genes or genetic defects that have been shown to cause, or to be strongly associated with, primary infertility. Yet, with completion of the human genome and progress in personalized medicine, the situation is rapidly changing. Indeed, there are 10-15 new gene tests, on average, being added to the clinical genetic testing list annually.
Collapse
Affiliation(s)
- Michelle Zorrilla
- Departments of Obstetrics, Gynecology and Reproductive Sciences, Pathology, School of Medicine, University of Pittsburgh
| | - Alexander N Yatsenko
- Departments of Obstetrics, Gynecology and Reproductive Sciences, Pathology, School of Medicine, University of Pittsburgh
| |
Collapse
|
28
|
Martinez G, Gillois P, Le Mitouard M, Borye R, Esquerré-Lamare C, Satre V, Bujan L, Hennebicq S. FISH and tips: a large scale analysis of automated versus manual scoring for sperm aneuploidy detection. Basic Clin Androl 2013; 23:13. [PMID: 25780575 PMCID: PMC4349666 DOI: 10.1186/2051-4190-23-13] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Accepted: 10/16/2013] [Indexed: 12/22/2022] Open
Abstract
Background Approximately 1% of the spermatozoa found in ejaculate of healthy men are aneuploid and this rate increases in the population of subfertile and infertile men. Moreover, fertilization with these aneuploid sperm can lead to impaired embryo development. Fluorescent In Situ Hybridization (FISH) is the common cytogenetic tool used for aneuploidy screening on sperm. However, it is a time-consuming technique and cytogenetic or in vitro fertilization laboratories cannot routinely use it and face the increasing demand of such analyses before Assisted Reproductive Techniques (ART). As automation can be a clue for routine practice, this study compares manual and automated scoring of sperm aneuploidy rates using a Metafer Metasystems® device. The results obtained also contribute to global data about FISH on sperm cells. Methods We recruited 100 men addressed for sperm cryopreservation. They all signed an informed consent to participate in the study. 29 men were donors or consulted before vasectomy (control group) and 71 were suffering of Hodgkin’s disease or non Hodgkin lymphoma (patient group). One semen sample was collected for each patient, analyzed according to WHO criteria and prepared for a triple-color FISH using centromeric probes for chromosomes 18, X and Y. Automated scoring was performed using a Metafer Metasystems® device. Results 507,019 cells were scored. We found a strong concordance between the automated and the manual reading (d < 0.01 in Bland-Altman test). We also did not find a statistically significant difference between the automated and the manual reading using Wilcoxon test for total aneuploidy rate (p = 0.06), sex chromosomes disomy (p = 0.33), chromosome 18 disomy (p = 0.39) and diploidy (p = 0.21). Cumulative rate of total aneuploidy was 0.78% ± 0.212% for patient group and 0.54% ± 0.15 for control group and among this, sex chromosome XY disomy rate was of 0.54% for patient group and 0.27% for control group. Conclusion This study validates the automated reading for FISH on sperm with a Metafer Metasystems® device and allows its use in a laboratory routine.
Collapse
Affiliation(s)
- Guillaume Martinez
- Genetic and procreation Department, CS 10217, CHU de Grenoble, Laboratoire d'aide à la procréation - CECOS, Grenoble, Cedex 9, 38043 France ; Joseph Fourier University, Grenoble, F-38000 France ; Laboratoire AGIM, CNRS FRE3405, "Equipe Andrologie Génétique et Cycle cellulaire", La Tronche, F-38700 France
| | - Pierre Gillois
- Joseph Fourier University, Grenoble, F-38000 France ; ThEMAS TIMC-IMAG, UMR CNRS 5525, Joseph Fourier University, Public Health Pole, University Hospital of Grenoble, BP217, Grenoble, Cedex 9, 38043 France
| | - Marine Le Mitouard
- Genetic and procreation Department, CS 10217, CHU de Grenoble, Laboratoire d'aide à la procréation - CECOS, Grenoble, Cedex 9, 38043 France ; Joseph Fourier University, Grenoble, F-38000 France
| | - Rémy Borye
- Genetic and procreation Department, CS 10217, CHU de Grenoble, Laboratoire d'aide à la procréation - CECOS, Grenoble, Cedex 9, 38043 France ; Joseph Fourier University, Grenoble, F-38000 France
| | - Camille Esquerré-Lamare
- CECOS and Toulouse University, UPS, Groupe de recherche en fertilité humaine (EA3694, Human Fertility Research Group), Hôpital Paule de Viguier, University Hospital of Toulouse, Toulouse, France
| | - Véronique Satre
- Joseph Fourier University, Grenoble, F-38000 France ; Laboratoire AGIM, CNRS FRE3405, "Equipe Andrologie Génétique et Cycle cellulaire", La Tronche, F-38700 France ; Genetic and Procreation Department, CS10217, CHU de Grenoble, Génétique chromosomique, Grenoble, Cedex 9, 38043 France
| | - Louis Bujan
- CECOS and Toulouse University, UPS, Groupe de recherche en fertilité humaine (EA3694, Human Fertility Research Group), Hôpital Paule de Viguier, University Hospital of Toulouse, Toulouse, France
| | - Sylviane Hennebicq
- Genetic and procreation Department, CS 10217, CHU de Grenoble, Laboratoire d'aide à la procréation - CECOS, Grenoble, Cedex 9, 38043 France ; Joseph Fourier University, Grenoble, F-38000 France ; Laboratoire AGIM, CNRS FRE3405, "Equipe Andrologie Génétique et Cycle cellulaire", La Tronche, F-38700 France
| |
Collapse
|
29
|
Kolomiets OL, Atsaeva MM, Dadashev SY, Abilev SK, Spangenberg VE, Matveevsky SN. Damage to synaptonemal complex structure and peculiarities of selection of mouse spermatocytes I at response to drug administration. RUSS J GENET+ 2013. [DOI: 10.1134/s1022795413110100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
30
|
Levron J, Aviram-Goldring A, Rienstien S, Bider D, Dor J, Raviv G. Aneuploidy rates for chromosomes X/Y and 18 among preselected spermatozoa in men with severe teratospermia. Reprod Biomed Online 2013; 27:280-5. [DOI: 10.1016/j.rbmo.2013.05.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Revised: 04/29/2013] [Accepted: 05/21/2013] [Indexed: 10/26/2022]
|
31
|
Hierarchical radial and polar organisation of chromosomes in human sperm. Chromosome Res 2012; 20:875-87. [DOI: 10.1007/s10577-012-9323-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2012] [Revised: 10/29/2012] [Accepted: 10/31/2012] [Indexed: 01/06/2023]
|
32
|
Primig M. The bioinformatics tool box for reproductive biology. Biochim Biophys Acta Mol Basis Dis 2012; 1822:1880-95. [PMID: 22687534 DOI: 10.1016/j.bbadis.2012.05.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Revised: 05/04/2012] [Accepted: 05/28/2012] [Indexed: 10/28/2022]
Abstract
Genetics and molecular biology have been instrumental for a better understanding of heritable defects causing human infertility over the past decades. More recently, the field of reproductive biology has harnessed genome biological approaches to gain insight into molecular processes underlying normal and pathological gametogenesis and gamete function. We are currently witnessing yet another quantum leap in our ability to monitor the flow of information from the genome via the transcriptome to the proteome: tiling arrays that cover both strands of a given target genome and RNA-Seq, a method based on ultra-high throughput DNA sequencing, enable us to study noncoding and protein-coding transcripts with unprecedented precision and depth at a reasonable cost. These technologies have spawned a thriving discipline within the bioinformatics field that employs information technology for managing and interpreting biological high-throughput data. This review outlines database projects and online analysis tools useful for life scientists in general and discusses in detail selected projects that have specifically been developed for researchers and clinicians in the field of reproductive biology. This article is part of a Special Issue entitled: Molecular Genetics of Human Reproductive Failure.
Collapse
Affiliation(s)
- Michael Primig
- Inserm UMR1085-Irset, Université de Rennes 1, Rennes, France.
| |
Collapse
|
33
|
An association study of HFE gene mutation with idiopathic male infertility in the Chinese Han population. Asian J Androl 2012; 14:599-603. [PMID: 22504868 DOI: 10.1038/aja.2012.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Mutations in the haemochromatosis gene (HFE) influence iron status in the general population of Northern Europe, and excess iron is associated with the impairment of spermatogenesis. The aim of this study is to investigate the association between three mutations (C282Y, H63D and S65C) in the HFE gene with idiopathic male infertility in the Chinese Han population. Two groups of Chinese men were recruited: 444 infertile men (including 169 with idiopathic azoospermia) and 423 controls with proven fertility. The HFE gene was detected using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique. The experimental results demonstrated that no C282Y or S65C mutations were detected. Idiopathic male infertility was not significantly associated with heterozygous H63D mutation (odds ratio=0.801, 95% confidence interval=0.452-1.421, χ(2)=0.577, P=0.448). The H63D mutation frequency did not correlate significantly with the serum luteinizing hormone (LH), follicle-stimulating hormone (FSH) and testosterone (T) levels in infertile men (P=0.896, P=0.404 and P=0.05, respectively). Our data suggest that the HFE H63D mutation is not associated with idiopathic male reproductive dysfunction.
Collapse
|
34
|
Harton GL, Tempest HG. Chromosomal disorders and male infertility. Asian J Androl 2012; 14:32-9. [PMID: 22120929 PMCID: PMC3735152 DOI: 10.1038/aja.2011.66] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2011] [Revised: 07/07/2011] [Accepted: 08/24/2011] [Indexed: 11/08/2022] Open
Abstract
Infertility in humans is surprisingly common occurring in approximately 15% of the population wishing to start a family. Despite this, the molecular and genetic factors underlying the cause of infertility remain largely undiscovered. Nevertheless, more and more genetic factors associated with infertility are being identified. This review will focus on our current understanding of the chromosomal basis of male infertility specifically: chromosomal aneuploidy, structural and numerical karyotype abnormalities and Y chromosomal microdeletions. Chromosomal aneuploidy is the leading cause of pregnancy loss and developmental disabilities in humans. Aneuploidy is predominantly maternal in origin, but concerns have been raised regarding the safety of intracytoplasmic sperm injection as infertile men have significantly higher levels of sperm aneuploidy compared to their fertile counterparts. Males with numerical or structural karyotype abnormalities are also at an increased risk of producing aneuploid sperm. Our current understanding of how sperm aneuploidy translates to embryo aneuploidy will be reviewed, as well as the application of preimplantation genetic diagnosis (PGD) in such cases. Clinical recommendations where possible will be made, as well as discussion of the use of emerging array technology in PGD and its potential applications in male infertility.
Collapse
|