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Balder P, Jones C, Coward K, Yeste M. Sperm chromatin: Evaluation, epigenetic signatures and relevance for embryo development and assisted reproductive technology outcomes. Eur J Cell Biol 2024; 103:151429. [PMID: 38905808 DOI: 10.1016/j.ejcb.2024.151429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 06/07/2024] [Accepted: 06/07/2024] [Indexed: 06/23/2024] Open
Abstract
Sperm chromatin is distinct from somatic cell chromatin, as a result of extensive remodeling during the final stages of spermatogenesis. In this process, the majority of histones is replaced with protamines. The chromatin is consequently highly condensed and inert, which facilitates protection of the DNA. The sperm epigenomic landscape is shaped by histone retention, histone and protamine modification, DNA methylation, and RNAs. In recent years, sperm chromatin integrity and its epigenetic marks have been increasingly studied, and the constitution of sperm chromatin is steadily being uncovered. This growing body of research prompts assessment of the frequently overlooked involvement of sperm in fertility and embryonic development. Moreover, numerous endogenous and exogenous factors are known to affect sperm chromatin, which may in turn impact the reproductive success. Concerns have been raised about the effects of assisted reproductive technology (ART) on the sperm epigenome, embryonic development and offspring health. This review examines the structure and epigenetic signatures of sperm chromatin in the context of fertility and early embryonic development. Additionally, sperm chromatin evaluation and causes of aberrant integrity are outlined. Building on the knowledge discussed in the current review, future research should aim to elucidate the intricate relationship between all aspects of sperm chromatin and embryo development. This could lead to the uncovering of new targets for treating infertility, as well as the acquisition of much needed insights into the possible reciprocal association between ART and sperm chromatin integrity.
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Affiliation(s)
- Pauline Balder
- Nuffield Department of Women's and Reproductive Health, Level 3, Women's Centre, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, UK; The Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine, Weill Cornell Medicine, New York, NY 10021, USA
| | - Celine Jones
- Nuffield Department of Women's and Reproductive Health, Level 3, Women's Centre, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, UK
| | - Kevin Coward
- Nuffield Department of Women's and Reproductive Health, Level 3, Women's Centre, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, UK
| | - Marc Yeste
- Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, Girona ES-17003, Spain; Unit of Cell Biology, Department of Biology, Faculty of Sciences, University of Girona, Girona ES-17003, Spain; Catalan Institution for Research and Advanced Studies (ICREA), Barcelona ES-08010, Spain.
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Grison S, Braga-Tanaka II, Baatout S, Klokov D. In utero exposure to ionizing radiation and metabolic regulation: perspectives for future multi- and trans-generation effects studies. Int J Radiat Biol 2024:1-14. [PMID: 38180060 DOI: 10.1080/09553002.2023.2295293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 11/22/2023] [Indexed: 01/06/2024]
Abstract
PURPOSE The radiation protection community has been particularly attentive to the risks of delayed effects on offspring from low dose or low dose-rate exposures to ionizing radiation. Despite this, the current epidemiologic studies and scientific data are still insufficient to provide the necessary evidence for improving risk assessment guidelines. This literature review aims to inform future studies on multigenerational and transgenerational effects. It primarily focuses on animal studies involving in utero exposure and discusses crucial elements for interpreting the results. These elements include in utero exposure scenarios relative to the developmental stages of the embryo/fetus, and the primary biological mechanisms responsible for transmitting heritable or hereditary effects to future generations. The review addresses several issues within the contexts of both multigenerational and transgenerational effects, with a focus on hereditary perspectives. CONCLUSIONS Knowledge consolidation in the field of Developmental Origins of Health and Disease (DOHaD) has led us to propose a new study strategy. This strategy aims to address the transgenerational effects of in utero exposure to low dose and low dose-rate radiation. Within this concept, there is a possibility that disruption of epigenetic programming in embryonic and fetal cells may occur. This disruption could lead to metabolic dysfunction, which in turn may cause abnormal responses to future environmental challenges, consequently increasing disease risk. Lastly, we discuss methodological limitations in our studies. These limitations are related to cohort size, follow-up time, model radiosensitivity, and analytical techniques. We propose scientific and analytical strategies for future research in this field.
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Affiliation(s)
- Stéphane Grison
- PSE-SANTE, Institut de Radioprotection et de Sûreté Nucléaire, Fontenay-aux-Roses, France
| | - Ignacia Iii Braga-Tanaka
- Department of Radiobiology, Institute for Environmental Sciences (IES), Rokkasho Kamikita, Aomori, Japan
| | - Sarah Baatout
- Belgian Nuclear Research Centre, SCK CEN, Institute of Nuclear Medical Applications, Mol, Belgium
- Department of Molecular Biotechnology (BW25) and Department of Human Structure and Repair (GE38), Ghent University, Ghent, Belgium
| | - Dmitry Klokov
- PSE-SANTE, Institut de Radioprotection et de Sûreté Nucléaire, Fontenay-aux-Roses, France
- Department of Microbiology, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada
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Ding X, Lv S, Guo Z, Gong X, Wang C, Zhang X, Meng K. Potential Therapeutic Options for Premature Ovarian Insufficiency: Experimental and Clinical Evidence. Reprod Sci 2023; 30:3428-3442. [PMID: 37460850 DOI: 10.1007/s43032-023-01300-1] [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: 04/05/2023] [Accepted: 07/10/2023] [Indexed: 12/03/2023]
Abstract
Premature ovarian insufficiency (POI) is a condition in which a woman experiences premature decline in ovarian function before the age of 40 years, manifested by menstrual disorders, decreased fertility, and possibly postmenopausal symptoms such as insomnia, hot flashes, and osteoporosis, and is one of the predominant clinical syndromes leading to female infertility. Genetic, immunologic, iatrogenic and other factors, alone or in combination, have been reported to trigger POI, yet the etiology remains unknown in most cases. The main methods currently used clinically to ameliorate menopausal symptoms due to hypoestrogenemia in POI patients are hormone replacement therapy, while the primary methods available to address infertility in POI patients are oocyte donation and cryopreservation techniques, both of which have limitations to some degree. In recent years, researchers have continued to explore more efficient and safe therapies, and have achieved impressive results in preclinical trials. In this article, we will mainly review the three most popular therapies and their related signaling pathways published in the past ten years, with the aim of providing ideas for clinical applications.
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Affiliation(s)
- Xuechun Ding
- Collaborative Innovation Center for Birth Defect Research and Transformation of Shandong Province, Jining Medical University, Jining, China
- College of Second Clinical Medical, Jining Medical University, Jining, China
| | - Shenmin Lv
- Collaborative Innovation Center for Birth Defect Research and Transformation of Shandong Province, Jining Medical University, Jining, China
- College of Second Clinical Medical, Jining Medical University, Jining, China
| | - Zhipeng Guo
- Collaborative Innovation Center for Birth Defect Research and Transformation of Shandong Province, Jining Medical University, Jining, China
- College of Second Clinical Medical, Jining Medical University, Jining, China
| | - Xiaowei Gong
- Collaborative Innovation Center for Birth Defect Research and Transformation of Shandong Province, Jining Medical University, Jining, China
- College of Second Clinical Medical, Jining Medical University, Jining, China
| | - Caiqin Wang
- Collaborative Innovation Center for Birth Defect Research and Transformation of Shandong Province, Jining Medical University, Jining, China
- College of Second Clinical Medical, Jining Medical University, Jining, China
| | - Xiaoyan Zhang
- Collaborative Innovation Center for Birth Defect Research and Transformation of Shandong Province, Jining Medical University, Jining, China
- College of Basic Medicine, Jining Medical University, Jining, China
| | - Kai Meng
- Collaborative Innovation Center for Birth Defect Research and Transformation of Shandong Province, Jining Medical University, Jining, China.
- Lin He's Academician Workstation of New Medicine and Clinical Translation, Jining Medical University, Jining, China.
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Luo J, Chen D, Mei Y, Li H, Qin B, Lin X, Chan TF, Lai KP, Kong D. Comparative transcriptome findings reveal the neuroinflammatory network and potential biomarkers to early detection of ischemic stroke. J Biol Eng 2023; 17:50. [PMID: 37533068 PMCID: PMC10398984 DOI: 10.1186/s13036-023-00362-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 06/25/2023] [Indexed: 08/04/2023] Open
Abstract
INTRODUCTION Ischemic stroke accounts for 70-80% of all stroke cases, leading to over two million people dying every year. Poor diagnosis and late detection are the major causes of the high death and disability rate. METHODS In the present study, we used the middle cerebral artery occlusion (MCAO) rat model and applied comparative transcriptomic analysis, followed by a systematic advanced bioinformatic analysis, including gene ontology enrichment analysis and Ingenuity Pathway Analysis (IPA). We aimed to identify novel biomarkers for the early detection of ischemic stroke. In addition, we aimed to delineate the molecular mechanisms underlying the development of ischemic stroke, in which we hoped to identify novel therapeutic targets for treating ischemic stroke. RESULTS In the comparative transcriptomic analysis, we identified 2657 differentially expressed genes (DEGs) in the brain tissue of the MCAO model. The gene enrichment analysis highlighted the importance of these DEGs in oxygen regulation, neural functions, and inflammatory and immune responses. We identified the elevation of angiopoietin-2 and leptin receptor as potential novel biomarkers for early detection of ischemic stroke. Furthermore, the result of IPA suggested targeting the inflammasome pathway, integrin-linked kinase signaling pathway, and Th1 signaling pathway for treating ischemic stroke. CONCLUSION The results of the present study provide novel insight into the biomarkers and therapeutic targets as potential treatments of ischemic stroke.
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Affiliation(s)
- Jiefeng Luo
- Department of Neurology, The Second Affiliated Hospital of Guangxi Medical University, No 166 Dadaxuedong Road, Nanning, Guangxi, 530007, People's Republic of China.
| | - Dingzhi Chen
- Department of Neurology, The Second Affiliated Hospital of Guangxi Medical University, No 166 Dadaxuedong Road, Nanning, Guangxi, 530007, People's Republic of China
| | - Yujia Mei
- Department of Neurology, The Second Affiliated Hospital of Guangxi Medical University, No 166 Dadaxuedong Road, Nanning, Guangxi, 530007, People's Republic of China
| | - Hepeng Li
- Department of Neurology, The Second Affiliated Hospital of Guangxi Medical University, No 166 Dadaxuedong Road, Nanning, Guangxi, 530007, People's Republic of China
| | - Biyun Qin
- Department of Neurology, The Second Affiliated Hospital of Guangxi Medical University, No 166 Dadaxuedong Road, Nanning, Guangxi, 530007, People's Republic of China
| | - Xiao Lin
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Ting Fung Chan
- School of Life Sciences, State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Keng Po Lai
- Clinical Medicine Research Center, The Second Affiliated Hospital of Guangxi Medical University, No 166 Dadaxuedong Road, Nanning, Guangxi, 530007, P. R. China.
| | - Deyan Kong
- Department of Neurology, The Second Affiliated Hospital of Guangxi Medical University, No 166 Dadaxuedong Road, Nanning, Guangxi, 530007, People's Republic of China.
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Chrzanowska KH, Seemanova E, Varon R, Digweed M, Piekutowska‐Abramczuk D, Sperling K, Seeman P. The NBN founder mutation-Evidence for a country specific difference in age at cancer manifestation. Cancer Rep (Hoboken) 2023; 6:e1700. [PMID: 36806726 PMCID: PMC9939984 DOI: 10.1002/cnr2.1700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 06/22/2022] [Accepted: 07/28/2022] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Nijmegen breakage syndrome (NBS) is an autosomal-recessive chromosome instability disorder characterized by, among others, hypersensitivity to X-irradiation and an exceptionally high risk for lymphoid malignancy. The vast majority of NBS patients is homozygous for a common Slavic founder mutation, c.657del5, of the NBN gene, which is involved in the repair of DNA double-strand breaks (DSBs). The founder mutation also predisposes heterozygous carriers to cancer, apparently however, with a higher risk in the Czech Republic/Slovakia (CS) than in Poland. AIM To examine whether the age of cancer manifestation and cancer death of NBN homozygotes is different between probands from CS and Poland. METHODS The study is restricted to probands born until 1989, before replacement of the communist regime by a democratic system in CS and Poland, and a substantial transition of the health care systems. Moreover, all patients were recruited without knowledge of their genetic status since the NBN gene was not identified until 1998. RESULTS Here, we show that cancer manifestation of NBN homozygotes is at a significantly earlier age in probands from CS than from Poland. This is explained by the difference in natural and medical radiation exposure, though within the permissible dosage. CONCLUSION It is reasonable to assume that this finding also sheds light on the higher cancer risk of NBN heterozygotes in CS than in Poland. This has implications for genetic counseling and individualized medicine also of probands with other DNA repair defects.
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Affiliation(s)
| | - Eva Seemanova
- Department of Clinical Genetics, Institute of Biology and Medical Genetics, 2nd Medical SchoolCharles UniversityPragueCzech Republic
| | - Raymonda Varon
- Institute of Medical and Human GeneticsCharité‐Universitätsmedizin BerlinBerlinGermany
| | - Martin Digweed
- Institute of Medical and Human GeneticsCharité‐Universitätsmedizin BerlinBerlinGermany
| | | | - Karl Sperling
- Institute of Medical and Human GeneticsCharité‐Universitätsmedizin BerlinBerlinGermany
| | - Pavel Seeman
- DNA Laboratory, Department of Pediatric Neurology, 2nd Medical SchoolCharles University, University Hospital MotolPragueCzech Republic
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Raskosha O, Bashlykova L, Starobor N. Assessment of DNA damage in somatic and germ cells of animals living with increased radiation background and their offspring. Int J Radiat Biol 2022; 99:499-509. [PMID: 35938979 DOI: 10.1080/09553002.2022.2110327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
PURPOSE The aim of this work is to assess DNA damage in the somatic and germ cells in root voles living for a long time under conditions of an increased radiation background and to examine the of manifestation of long-term consequences in their offspring. MATERIALS AND METHODS Using the DNA comet assay (neutral version), we assessed the proportion of cells with DNA damage in the cells of the thyroid, bone marrow and testicular in root voles (Microtus oeconomus Pall.) that lived under conditions of increased radiation background (exposure dose rate - 0.50-20 μSv/h; Komi Republic, Russia) and in their offspring (F1-F3) that were reproduced in a vivarium with a normal radiation background. RESULTS In animals caught in a radioactively contaminated area, the level of DNA fragmentation in the thyroid gland, bone marrow and testicular remained within the range of values of control animals. The studies that we continued on the offspring of irradiated root voles that were developing in the vivarium under normal radiation background allowed us to identify an increase in the level of DNA DSBs in the thyroid gland in the F1 generation, in the bone marrow and testicular cells in the F2 generation. The modifying effect of urethane showed a similarity in the response of somatic cells in voles that lived for a long time in a radioactively contaminated area and in their offspring that developed with a normal radiation background. The effect of urethane was more conspicuous in thyroid cells that, than in bone marrow cells. CONCLUSION The data obtained on voles from the experimental site indicate adaptation to habitat conditions in a radioactively polluted environment. The provocative effect of urethane made it possible to reveal different response of organs with different proliferative activity. Long-term habitation of voles under conditions of an increased radiation background led to genome instability in their offspring.
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Affiliation(s)
- Oksana Raskosha
- Ural Branch of the Russian Academy of Sciences, Institute of Biology of the Komi Science Center, Syktyvkar, Russia
| | - Lyudmila Bashlykova
- Ural Branch of the Russian Academy of Sciences, Institute of Biology of the Komi Science Center, Syktyvkar, Russia
| | - Natalia Starobor
- Ural Branch of the Russian Academy of Sciences, Institute of Biology of the Komi Science Center, Syktyvkar, Russia
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Gao J, Qian J, Ma N, Han J, Cui F, chen N, Tu Y. Protective Effects of Polydatin on Reproductive Injury Induced by Ionizing Radiation. Dose Response 2022; 20:15593258221107511. [PMID: 35783236 PMCID: PMC9244944 DOI: 10.1177/15593258221107511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The reproductive system is vulnerable to ionizing radiation, which is a hot research topic at present. We tested the effect of polydatin on spermatocytes(GC-1 cells) after X-ray irradiation. The reproductive damage model of C.elegans was established by 60Coγ-ray, and the protective effect of polydatin on reproductive damage caused by ionizing radiation was evaluated. We quantified the ROS levels of GC-1 cells and C.elegans after irradiation with polydatin and evaluated the anti-apoptosis effect of polydatin at proper concentration. Differential genes of C.elegans reproductive damage were screened out from transcriptome sequencing results and comparable GEO datasets. It was proved that 100μM polydatin significantly reduced the apoptosis of GC-1 cells induced by 2 Gy X-ray. In addition, the longevity, reproductive capacity, germ cell apoptosis and spawning and hatching capacity of polydatin were tested. The results showed that 100 μM polydatin content significantly increased the influence of 50 Gy 60Coγ-ray on reproductive capacity of C.elegans. Quantitative analysis of mRNA and protein levels of apoptosis-related genes and reproductive-related genes by qRT-PCR and Western blotcon firmed that polydatin with appropriate dosage had good protective effects on reproductive damage caused by radiation, which laid a foundation for the application research of polydatin in radiation protection.
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Affiliation(s)
- Jin Gao
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
| | - Jincheng Qian
- Department of Nuclear Medicine, First Affiliated Hospital of Soochow University, Suzhou, China
| | - Nan Ma
- The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Jianfang Han
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
| | - Fengmei Cui
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
| | - Na chen
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
| | - Yu Tu
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
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The hydrogen storage nanomaterial MgH 2 improves irradiation-induced male fertility impairment by suppressing oxidative stress. Biomater Res 2022; 26:20. [PMID: 35619159 PMCID: PMC9134580 DOI: 10.1186/s40824-022-00266-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 05/07/2022] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE This study aimed to reveal the protective effect of hydrogen storage nanomaterial MgH2 on radiation-induced male fertility impairment. METHODS The characterization of MgH2 were analyzed by scanning electron microscopy (SEM) and particle size analyzer. The safety of MgH2 were evaluated in vivo and in vitro. The radioprotective effect of MgH2 on the reproductive system were analyzed in mice, including sperm quality, genetic effect, spermatogenesis, and hormone secretion. ESR, flow cytometry and western blotting assay were used to reveal the underlying mechanisms. RESULTS MgH2 had an irregular spherical morphology and a particle size of approximately 463.2 nm, and the content of Mg reached 71.46%. MgH2 was safe and nontoxic in mice and cells. After irradiation, MgH2 treatment significantly protected testicular structure, increased sperm density, improved sperm motility, reduced deformity rates, and reduced the genetic toxicity. Particularly, the sperm motility were consistent with those in MH mice and human semen samples. Furthermore, MgH2 treatment could maintain hormone secretion and testicular spermatogenesis, especially the generation of Sertoli cells, spermatogonia and round sperm cells. In vitro, MgH2 eliminated the [·OH], suppressed the irradiation-induced increase in ROS production, and effectively alleviated the increase in MDA contents. Moreover, MgH2 significantly ameliorated apoptosis in testes and cells and reversed the G2/M phase cell cycle arrest induced by irradiation. In addition, MgH2 inhibited the activation of radiation-induced inflammation and pyroptosis. CONCLUSION MgH2 improved irradiation-induced male fertility impairment by eliminating hydroxyl free radicals. Mice fertility and function were evaluated with or without MgH2 treatment after 5 Gy irradiation. MgH2 had the ability of hydroxyl radicals scavenging and MDA suppressing in testicular tissue induced by irradiation. Further, MgH2 could participate in spermatogenesis and protect sperm development in three stages: the generation of Sertoli cells (Sox-9+), spermatogonia (Stra8+) and round sperm cells (Crem+). Moreover, MgH2 alleviated the decrease of testosterone secreted by interstitial cells after irradiation. In addition, MgH2 suppressed apoptosis, pyroptosis and inflammatory response and alleviated cell cycle arrest by mediating IR-induced ROS.
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Tang L, Chen P, Yang L, Liu J, Zheng Y, Lin J, Chen S, Luo Y, Chen Y, Ma X, Zhang L. Transgenerational inheritance of promoter methylation changes in extrauterine growth restriction-induced pulmonary arterial pressure disorders. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:1551. [PMID: 34790757 PMCID: PMC8576681 DOI: 10.21037/atm-21-4715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 10/02/2021] [Indexed: 11/06/2022]
Abstract
Background This study aimed to investigate the influence of extrauterine growth restriction (EUGR) on pulmonary arterial pressure (PAP) and the transgenerational inheritance of promoter methylation changes in pulmonary vascular endothelial cells (PVECs) of 2 consecutive generations under EUGR stress. Methods After modeling, PAP values of F1 and F2 pups were investigated at 9-week-old. The methyl-DNA immune precipitation chip was used to analyze DNA methylation profiling. Differential enrichment peaks (DEPs) and regions of interest (ROIs) were identified, based on which Gene Ontology (GO) enrichment, Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway, and reactome pathway enrichments were analyzed. Results The F1 male rats in the EUGR group had significantly increased PAP levels compared to the control group; however, this increase was not observed in female rats. Interestingly, in F2 female rats, the EUGR group had decreased PAP. In the X chromosome of the F1 males, there were 16 differential ROI genes in the F1 generation, while in F2 females, there were 86 differential ROI genes. Similarly, there were 105 DEPs in the F1 generation and 38 DEPs in the F2 generation. In combination with the 5 common ROIs and 14 common DEPs, 18 genes were regarded as the key candidate genes associated with hereditable PAP variation in the EUGR model. Enrichment analysis showed that synaptic and neurotransmitter relative pathways might be involved in the process of EUGR-induced PAH development. Among common DEPs, Smad1 and Serpine1 were also found in 102 PAH-associated genes in the MalaCards database. Conclusions Together, there is a transgenerational inheritance of promoter methylation changes in the X chromosome in EUGR-induced PAP disorders, which involves the participation of synaptic and neurotransmitter relative pathways. Also, attenuated methylation of Smad1 and Serpine1 in the promoter region may be a partial driver of PAH in later life.
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Affiliation(s)
- Lili Tang
- Department of Neonatology, Children's Medical Center Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Ping Chen
- Department of Neonatology, The Affiliated Fuzhou Children Hospital of Fujian Medical University, Fuzhou, China
| | - Liu Yang
- Unimed Scientific Inc., Wuxi, China
| | - Jiyuan Liu
- Fujian Medical University, Fuzhou, China
| | - Yuanfang Zheng
- Department of Neonatology, The Affiliated Fuzhou Children Hospital of Fujian Medical University, Fuzhou, China
| | - Jincai Lin
- Department of Neonatology, The Affiliated Fuzhou Children Hospital of Fujian Medical University, Fuzhou, China
| | - Senhua Chen
- Department of Neonatology, The Affiliated Fuzhou Children Hospital of Fujian Medical University, Fuzhou, China
| | - Yinzhu Luo
- Department of Neonatology, The Affiliated Fuzhou Children Hospital of Fujian Medical University, Fuzhou, China
| | - Yanyan Chen
- Department of Neonatology, The Affiliated Fuzhou Children Hospital of Fujian Medical University, Fuzhou, China
| | - Xiaoying Ma
- Department of Neonatology, The Affiliated Fuzhou Children Hospital of Fujian Medical University, Fuzhou, China
| | - Liyan Zhang
- Department of Neonatology, The Affiliated Fuzhou Children Hospital of Fujian Medical University, Fuzhou, China
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