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Ahmed M, Riaz U, Lv H, Yang L. A Molecular Perspective and Role of NAD + in Ovarian Aging. Int J Mol Sci 2024; 25:4680. [PMID: 38731898 PMCID: PMC11083308 DOI: 10.3390/ijms25094680] [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: 03/27/2024] [Revised: 04/18/2024] [Accepted: 04/22/2024] [Indexed: 05/13/2024] Open
Abstract
The decline in female fecundity is linked to advancing chronological age. The ovarian reserve diminishes in quantity and quality as women age, impacting reproductive efficiency and the aging process in the rest of the body. NAD+ is an essential coenzyme in cellular energy production, metabolism, cell signaling, and survival. It is involved in aging and is linked to various age-related conditions. Hallmarks associated with aging, diseases, and metabolic dysfunctions can significantly affect fertility by disturbing the delicate relationship between energy metabolism and female reproduction. Enzymes such as sirtuins, PARPs, and CD38 play essential roles in NAD+ biology, which actively consume NAD+ in their enzymatic activities. In recent years, NAD+ has gained much attention for its role in aging and age-related diseases like cancer, Alzheimer's, cardiovascular diseases, and neurodegenerative disorders, highlighting its involvement in various pathophysiological processes. However, its impact on female reproduction is not well understood. This review aims to bridge this knowledge gap by comprehensively exploring the complex interplay between NAD+ biology and female reproductive aging and providing valuable information that could help develop plans to improve women's reproductive health and prevent fertility issues.
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Affiliation(s)
- Mehboob Ahmed
- Hubei Hongshan Laboratory, Wuhan 430070, China; (M.A.); (U.R.); (H.L.)
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- National Center for International Research on Animal Genetics, Breeding and Reproduction (NCIRAGBR), Ministry of Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Umair Riaz
- Hubei Hongshan Laboratory, Wuhan 430070, China; (M.A.); (U.R.); (H.L.)
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- National Center for International Research on Animal Genetics, Breeding and Reproduction (NCIRAGBR), Ministry of Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Haimiao Lv
- Hubei Hongshan Laboratory, Wuhan 430070, China; (M.A.); (U.R.); (H.L.)
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- National Center for International Research on Animal Genetics, Breeding and Reproduction (NCIRAGBR), Ministry of Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Liguo Yang
- Hubei Hongshan Laboratory, Wuhan 430070, China; (M.A.); (U.R.); (H.L.)
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- National Center for International Research on Animal Genetics, Breeding and Reproduction (NCIRAGBR), Ministry of Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
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2
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Ozturk S. The close relationship between oocyte aging and telomere shortening, and possible interventions for telomere protection. Mech Ageing Dev 2024; 218:111913. [PMID: 38307343 DOI: 10.1016/j.mad.2024.111913] [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: 10/16/2023] [Revised: 01/17/2024] [Accepted: 01/22/2024] [Indexed: 02/04/2024]
Abstract
As women delay childbearing due to socioeconomic reasons, understanding molecular mechanisms decreasing oocyte quantity and quality during ovarian aging becomes increasingly important. The ovary undergoes biological aging at a higher pace when compared to other organs. As is known, telomeres play crucial roles in maintaining genomic integrity, and their shortening owing to increased reactive oxygen species, consecutive cellular divisions, genetic and epigenetic alterations is associated with loss of developmental competence of oocytes. Novel interventions such as antioxidant treatments and regulation of gene expression are being investigated to prevent or rescue telomere attrition and thereby oocyte aging. Herein, potential factors and molecular mechanisms causing telomere shortening in aging oocytes were comprehensively reviewed. For the purpose of extending reproductive lifespan, possible therapeutic interventions to protect telomere length were also discussed.
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Affiliation(s)
- Saffet Ozturk
- Department of Histology and Embryology, Akdeniz University School of Medicine, Antalya, Turkey.
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3
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Wu X, Wang S, Guo Y, Song S, Zeng S. KAT8 functions in redox homeostasis and mitochondrial dynamics during mouse oocyte meiosis progression. FASEB J 2024; 38:e23435. [PMID: 38243686 DOI: 10.1096/fj.202301946r] [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: 09/22/2023] [Revised: 12/11/2023] [Accepted: 01/05/2024] [Indexed: 01/21/2024]
Abstract
As a histone acetyltransferase, lysine acetyltransferase 8 (KAT8) participates in diverse biological processes. However, the effect of KAT8 on oocyte maturation in mice remains unclear. In this study, we found that mouse oocytes overexpressing Kat8-OE induced maturation failure manifested reduced rates of GVBD and first polar body emission. In addition, immunostaining results revealed that Kat8 overexpressing oocytes showed inappropriate mitochondrial distribution patterns, overproduction of reactive oxygen species (ROS), accumulation of phosphorylated γH2AX, hyperacetylation of α-tubulin, and severely disrupted spindle/chromosome organization. Moreover, we revealed that Kat8 overexpression induced a decline in SOD1 proteins and KAT8's interaction with SOD1 in mouse ovaries via immunoprecipitation. Western blotting data confirmed that Kat8-OE induced downregulation of SOD1 expression, which is a key factor for the decline of oocyte quality in advanced maternal age. Also, the injection of Myc-Sod1 cRNA could partially rescue maternal age-induced meiotic defects in oocytes. In conclusion, our data demonstrated that high level of KAT8 inhibited SOD1 activity, which in turn induced defects of mitochondrial dynamics, imbalance of redox homeostasis, and spindle/chromosome disorganization during mouse oocyte maturation.
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Affiliation(s)
- Xuan Wu
- State Key Laboratory of Animal Biotech Breeding, National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shiwei Wang
- State Key Laboratory of Animal Biotech Breeding, National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Yajun Guo
- State Key Laboratory of Animal Biotech Breeding, National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shuang Song
- State Key Laboratory of Animal Biotech Breeding, National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shenming Zeng
- State Key Laboratory of Animal Biotech Breeding, National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
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4
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Kang B, Wang X, An X, Ji C, Ling W, Qi Y, Li S, Jiang D. Polyamines in Ovarian Aging and Disease. Int J Mol Sci 2023; 24:15330. [PMID: 37895010 PMCID: PMC10607840 DOI: 10.3390/ijms242015330] [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: 09/27/2023] [Revised: 10/17/2023] [Accepted: 10/17/2023] [Indexed: 10/29/2023] Open
Abstract
Ovarian aging and disease-related decline in fertility are challenging medical and economic issues with an increasing prevalence. Polyamines are a class of polycationic alkylamines widely distributed in mammals. They are small molecules essential for cell growth and development. Polyamines alleviate ovarian aging through various biological processes, including reproductive hormone synthesis, cell metabolism, programmed cell death, etc. However, an abnormal increase in polyamine levels can lead to ovarian damage and promote the development of ovarian disease. Therefore, polyamines have long been considered potential therapeutic targets for aging and disease, but their regulatory roles in the ovary deserve further investigation. This review discusses the mechanisms by which polyamines ameliorate human ovarian aging and disease through different biological processes, such as autophagy and oxidative stress, to develop safe and effective polyamine targeted therapy strategies for ovarian aging and the diseases.
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Affiliation(s)
- Bo Kang
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (X.W.); (X.A.); (C.J.); (W.L.); (Y.Q.); (S.L.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Xin Wang
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (X.W.); (X.A.); (C.J.); (W.L.); (Y.Q.); (S.L.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiaoguang An
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (X.W.); (X.A.); (C.J.); (W.L.); (Y.Q.); (S.L.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Chengweng Ji
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (X.W.); (X.A.); (C.J.); (W.L.); (Y.Q.); (S.L.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Weikang Ling
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (X.W.); (X.A.); (C.J.); (W.L.); (Y.Q.); (S.L.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Yuxin Qi
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (X.W.); (X.A.); (C.J.); (W.L.); (Y.Q.); (S.L.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Shuo Li
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (X.W.); (X.A.); (C.J.); (W.L.); (Y.Q.); (S.L.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Dongmei Jiang
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (X.W.); (X.A.); (C.J.); (W.L.); (Y.Q.); (S.L.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
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5
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Bozdemir N, Uysal F. Histone acetyltransferases and histone deacetyl transferases play crucial role during oogenesis and early embryo development. Genesis 2023; 61:e23518. [PMID: 37226850 DOI: 10.1002/dvg.23518] [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: 02/09/2023] [Revised: 04/29/2023] [Accepted: 05/02/2023] [Indexed: 05/26/2023]
Abstract
Dynamic epigenetic regulation is critical for proper oogenesis and early embryo development. During oogenesis, fully grown germinal vesicle oocytes develop to mature Metaphase II oocytes which are ready for fertilization. Fertilized oocyte proliferates mitotically until blastocyst formation and the process is called early embryo development. Throughout oogenesis and early embryo development, spatio-temporal gene expression takes place, and this dynamic gene expression is controlled with the aid of epigenetics. Epigenetic means that gene expression can be altered without changing DNA itself. Epigenome is regulated through DNA methylation and histone modifications. While DNA methylation generally ends up with repression of gene expression, histone modifications can result in expression or repression depending on type of modification, type of histone protein and its specific residue. One of the modifications is histone acetylation which generally ends up with gene expression. Histone acetylation occurs through the addition of acetyl group onto amino terminal of the core histone proteins by histone acetyltransferases (HATs). Contrarily, histone deacetylation is associated with repression of gene expression, and it is catalyzed by histone deacetylases (HDACs). This review article focuses on what is known about alterations in the expression of HATs and HDACs and emphasizes importance of HATs and HDACs during oogenesis and early embryo development.
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Affiliation(s)
- Nazlican Bozdemir
- Department of Histology and Embryology, Ankara Medipol University School of Medicine, Ankara, Turkey
| | - Fatma Uysal
- Department of Histology and Embryology, Ankara Medipol University School of Medicine, Ankara, Turkey
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6
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Ren X, Yun X, Yang T, Xu T, Shi D, Li X. Epifriedelanol delays the aging of porcine oocytes matured invitro. Toxicon 2023; 233:107256. [PMID: 37586610 DOI: 10.1016/j.toxicon.2023.107256] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 08/06/2023] [Accepted: 08/12/2023] [Indexed: 08/18/2023]
Abstract
Oocyte aging directly affects the subsequent embryonic development. Epifriedelanol is the active ingredient of Aster tataricus L.F. extract, and it possesses potential anti-cancer, anti-inflammatory and antioxidant properties. In addition, epifriedelanol can slow the aging of human skin fibroblasts. To explore the effect of epifriedelanol on the aging of porcine oocytes matured in vitro, the aging model was first established, epifriedelanol was added to in vitro maturation (IVM) medium to investigate its anti-aging effects by observing oocyte maturation and embryonic development potential, and analyzing aging-related gene expression, reactive oxygen species and mitochondrial membrane potential levels. It was found that typical aging of porcine oocytes appeared from 66 h during in vitro maturation. Compared with the 44 h group, a larger perivitelline space, increased abnormality of microtubulin formation, and significantly lower blastocyst rate were observed in the 66 h and 72 h groups. Compared with the 0 μg/mL group, the first polar body extrusion, cleavage and blastocyst rates were significantly improved (P < 0.05) in 10 μg/mL group. The expression of oocyte developmental potential-related, SIRT family-related, antioxidant and anti-apoptotic-related genes was significantly up-regulated (P < 0.05), p53 and pro-apoptotic genes were significantly down-regulated (P < 0.05). In addition, the reactive oxygen species level was significantly decreased (P < 0.01), the mitochondrial membrane potential was significantly elevated (P < 0.01) in 10 μg/mL group. In conclusion, epifriedelanol delays the aging of porcine oocytes cultured in vitro by up-regulating SIRT family gene expression, enhancing the antioxidant and anti-apoptotic capacity of oocytes.
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Affiliation(s)
- Xuan Ren
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Xuedan Yun
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Ting Yang
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Tairan Xu
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Deshun Shi
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Xiangping Li
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China.
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Ferreira AF, Soares M, Almeida-Santos T, Ramalho-Santos J, Sousa AP. Aging and oocyte competence: A molecular cell perspective. WIREs Mech Dis 2023; 15:e1613. [PMID: 37248206 DOI: 10.1002/wsbm.1613] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 12/30/2022] [Accepted: 04/19/2023] [Indexed: 05/31/2023]
Abstract
Follicular microenvironment is paramount in the acquisition of oocyte competence, which is dependent on two interconnected and interdependent processes: nuclear and cytoplasmic maturation. Extensive research conducted in human and model systems has provided evidence that those processes are disturbed with female aging. In fact, advanced maternal age (AMA) is associated with a lower chance of pregnancy and live birth, explained by the age-related decline in oocyte quality/competence. This decline has largely been attributed to mitochondria, essential for oocyte maturation, fertilization, and embryo development; with mitochondrial dysfunction leading to oxidative stress, responsible for nuclear and mitochondrial damage, suboptimal intracellular energy levels, calcium disturbance, and meiotic spindle alterations, that may result in oocyte aneuploidy. Nuclear-related mechanisms that justify increased oocyte aneuploidy include deoxyribonucleic acid (DNA) damage, loss of chromosomal cohesion, spindle assembly checkpoint dysfunction, meiotic recombination errors, and telomere attrition. On the other hand, age-dependent cytoplasmic maturation failure is related to mitochondrial dysfunction, altered mitochondrial biogenesis, altered mitochondrial morphology, distribution, activity, and dynamics, dysmorphic smooth endoplasmic reticulum and calcium disturbance, and alterations in the cytoskeleton. Furthermore, reproductive somatic cells also experience the effects of aging, including mitochondrial dysfunction and DNA damage, compromising the crosstalk between granulosa/cumulus cells and oocytes, also affected by a loss of gap junctions. Old oocytes seem therefore to mature in an altered microenvironment, with changes in metabolites, ribonucleic acid (RNA), proteins, and lipids. Overall, understanding the mechanisms implicated in the loss of oocyte quality will allow the establishment of emerging biomarkers and potential therapeutic anti-aging strategies. This article is categorized under: Reproductive System Diseases > Molecular and Cellular Physiology.
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Affiliation(s)
- Ana Filipa Ferreira
- Reproductive Medicine Unit, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
- Faculty of Medicine, Azinhaga de Santa Comba, University of Coimbra, Coimbra, Portugal
- CNC-Center for Neuroscience and Cell Biology, CIBB, University of Coimbra, Coimbra, Portugal
| | - Maria Soares
- CNC-Center for Neuroscience and Cell Biology, CIBB, University of Coimbra, Coimbra, Portugal
- PhD Programme in Experimental Biology and Biomedicine (PDBEB), Institute for Interdisciplinary Research (IIIUC), University of Coimbra, Coimbra, Portugal
| | - Teresa Almeida-Santos
- Reproductive Medicine Unit, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
- Faculty of Medicine, Azinhaga de Santa Comba, University of Coimbra, Coimbra, Portugal
- CNC-Center for Neuroscience and Cell Biology, CIBB, University of Coimbra, Coimbra, Portugal
| | - João Ramalho-Santos
- CNC-Center for Neuroscience and Cell Biology, CIBB, University of Coimbra, Coimbra, Portugal
- Department of Life Sciences, Calçada Martim de Freitas, University of Coimbra, Coimbra, Portugal
| | - Ana Paula Sousa
- Reproductive Medicine Unit, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
- CNC-Center for Neuroscience and Cell Biology, CIBB, University of Coimbra, Coimbra, Portugal
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Czajkowska K, Ajduk A. Mitochondrial activity and redox status in oocytes from old mice: The interplay between maternal and postovulatory aging. Theriogenology 2023; 204:18-30. [PMID: 37031516 DOI: 10.1016/j.theriogenology.2023.03.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 03/30/2023] [Accepted: 03/30/2023] [Indexed: 04/07/2023]
Abstract
Maternal aging has been reported to reduce oocyte quality and, in turn, lower the developmental potential of the resulting embryos. Here, we show that maternally aged oocytes display two strikingly different phenotypes: some have normal morphology, whereas others have significantly shrunk cytoplasm. The latter phenotype usually prevails in aged females. Our objective was to characterize both types of maternally aged oocytes and investigate the origins of this diversity. Importantly, our experiments indicate that shrunk maternally aged oocytes are severely compromised in terms of mitochondrial functionality as compared to their young or morphologically normal maternally aged counterparts: they display significantly decreased mitochondrial activity and lower amounts of ROS. In contrast, morphologically normal maternally aged oocytes had the same mitochondrial activity as young ones, while their ROS levels were higher. Surprisingly, the shrunk phenotype was completely absent in maternally aged oocytes that matured in vitro, suggesting that it is not caused inherently by maternal aging, but may be related to other factors, like postovulatory aging. Indeed, an additional culture of in vitro matured young and old oocytes (i.e., in vitro postovulatory aging) significantly decreased their mitochondrial activity and led to cytoplasm shrinkage. In vivo postovulatory aging had a similar effect on oocytes from both young and old females. Finally, we examined the developmental potential of oocytes obtained from aged females. Shrunk (i.e., most likely postovulatory aged) oocytes failed to become fertilized, whereas morphologically normal ones (i.e., most likely not subjected to postovulatory aging) underwent fertilization and subsequent cleavage divisions, although they achieved the 2-cell stage less frequently than morphologically normal oocytes from young females. Importantly, the quality of blastocysts as well as the live birth rate for morphologically normal oocytes from old and young females were similar. In summary, our data clearly indicate that two pools of oocytes present in oviducts of aged females differ significantly in their quality and developmental potential and that the more severely affected phenotype results most likely from a synergistic action of maternal and postovulatory aging.
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Reiter RJ, Sharma R, Romero A, Manucha W, Tan DX, Zuccari DAPDC, Chuffa LGDA. Aging-Related Ovarian Failure and Infertility: Melatonin to the Rescue. Antioxidants (Basel) 2023; 12:antiox12030695. [PMID: 36978942 PMCID: PMC10045124 DOI: 10.3390/antiox12030695] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/05/2023] [Accepted: 03/09/2023] [Indexed: 03/14/2023] Open
Abstract
Aging has a major detrimental effect on the optimal function of the ovary with changes in this organ preceding the age-related deterioration in other tissues, with the middle-aged shutdown leading to infertility. Reduced fertility and consequent inability to conceive by women in present-day societies who choose to have children later in life leads to increased frustration. Melatonin is known to have anti-aging properties related to its antioxidant and anti-inflammatory actions. Its higher follicular fluid levels relative to blood concentrations and its likely synthesis in the oocyte, granulosa, and luteal cells suggest that it is optimally positioned to interfere with age-associated deterioration of the ovary. Additionally, the end of the female reproductive span coincides with a significant reduction in endogenous melatonin levels. Thus, the aims are to review the literature indicating melatonin production in mitochondria of oocytes, granulosa cells, and luteal cells, identify the multiple processes underlying changes in the ovary, especially late in the cessation of the reproductive life span, summarize the physiological and molecular actions of melatonin in the maintenance of normal ovaries and in the aging ovaries, and integrate the acquired information into an explanation for considering melatonin in the treatment of age-related infertility. Use of supplemental melatonin may help preserve fertility later in life and alleviate frustration in women delaying childbearing age, reduce the necessity of in vitro fertilization–embryo transfer (IVF-ET) procedures, and help solve the progressively increasing problem of non-aging-related infertility in women throughout their reproductive life span. While additional research is needed to fully understand the effects of melatonin supplementation on potentially enhancing fertility, studies published to date suggest it may be a promising option for those struggling with infertility.
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Affiliation(s)
- Russel J. Reiter
- Department of Cell Systems and Anatomy, Joe R and Teresa Lozano Long School of Medicine, UT Health San Antonio, San Antonio, TX 78229, USA
- Correspondence: (R.J.R.); (A.R.); Tel.: +1-210-567-3859 (R.J.R.); +34-91-3943970 (A.R.)
| | - Ramaswamy Sharma
- Department of Cell Systems and Anatomy, Joe R and Teresa Lozano Long School of Medicine, UT Health San Antonio, San Antonio, TX 78229, USA
| | - Alejandro Romero
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Complutense University of Madrid, 28040 Madrid, Spain
- Correspondence: (R.J.R.); (A.R.); Tel.: +1-210-567-3859 (R.J.R.); +34-91-3943970 (A.R.)
| | - Walter Manucha
- Instituto de Medicina y Biologia Experimental de Cuyo (IMBECU), Consejo Nacional de Investigaciones Cientificas y Tecnologicas (CONICET), Mendoza 5500, Argentina
| | - Dun-Xian Tan
- Department of Cell Systems and Anatomy, Joe R and Teresa Lozano Long School of Medicine, UT Health San Antonio, San Antonio, TX 78229, USA
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Yan F, Zhao Q, Li Y, Zheng Z, Kong X, Shu C, Liu Y, Shi Y. The role of oxidative stress in ovarian aging: a review. J Ovarian Res 2022; 15:100. [PMID: 36050696 PMCID: PMC9434839 DOI: 10.1186/s13048-022-01032-x] [Citation(s) in RCA: 71] [Impact Index Per Article: 35.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 08/21/2022] [Indexed: 11/29/2022] Open
Abstract
Ovarian aging refers to the process by which ovarian function declines until eventual failure. The pathogenesis of ovarian aging is complex and diverse; oxidative stress (OS) is considered to be a key factor. This review focuses on the fact that OS status accelerates the ovarian aging process by promoting apoptosis, inflammation, mitochondrial damage, telomere shortening and biomacromolecular damage. Current evidence suggests that aging, smoking, high-sugar diets, pressure, superovulation, chemotherapeutic agents and industrial pollutants can be factors that accelerate ovarian aging by exacerbating OS status. In addition, we review the role of nuclear factor E2-related factor 2 (Nrf2), Sirtuin (Sirt), mitogen-activated protein kinase (MAPK), protein kinase B (AKT), Forkhead box O (FoxO) and Klotho signaling pathways during the process of ovarian aging. We also explore the role of antioxidant therapies such as melatonin, vitamins, stem cell therapies, antioxidant monomers and Traditional Chinese Medicine (TCM), and investigate the roles of these supplements with respect to the reduction of OS and the improvement of ovarian function. This review provides a rationale for antioxidant therapy to improve ovarian aging.
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Affiliation(s)
- Fei Yan
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Qi Zhao
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Ying Li
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Zhibo Zheng
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Xinliang Kong
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Chang Shu
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Yanfeng Liu
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, People's Republic of China.
| | - Yun Shi
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, People's Republic of China.
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11
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Dvoran M, Nemcova L, Kalous J. An Interplay between Epigenetics and Translation in Oocyte Maturation and Embryo Development: Assisted Reproduction Perspective. Biomedicines 2022; 10:biomedicines10071689. [PMID: 35884994 PMCID: PMC9313063 DOI: 10.3390/biomedicines10071689] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/25/2022] [Accepted: 06/28/2022] [Indexed: 12/11/2022] Open
Abstract
Germ cell quality is a key prerequisite for successful fertilization and early embryo development. The quality is determined by the fine regulation of transcriptomic and proteomic profiles, which are prone to alteration by assisted reproduction technology (ART)-introduced in vitro methods. Gaining evidence shows the ART can influence preset epigenetic modifications within cultured oocytes or early embryos and affect their developmental competency. The aim of this review is to describe ART-determined epigenetic changes related to the oogenesis, early embryogenesis, and further in utero development. We confront the latest epigenetic, related epitranscriptomic, and translational regulation findings with the processes of meiotic maturation, fertilization, and early embryogenesis that impact the developmental competency and embryo quality. Post-ART embryo transfer, in utero implantation, and development (placentation, fetal development) are influenced by environmental and lifestyle factors. The review is emphasizing their epigenetic and ART contribution to fetal development. An epigenetic parallel among mouse, porcine, and bovine animal models and human ART is drawn to illustrate possible future mechanisms of infertility management as well as increase the awareness of the underlying mechanisms governing oocyte and embryo developmental complexity under ART conditions.
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12
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Ren SC, Chen X, Gong H, Wang H, Wu C, Li PH, Chen XF, Qu JH, Tang X. SIRT6 in Vascular Diseases, from Bench to Bedside. Aging Dis 2022; 13:1015-1029. [PMID: 35855341 PMCID: PMC9286919 DOI: 10.14336/ad.2021.1204] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 12/04/2021] [Indexed: 11/12/2022] Open
Abstract
Aging is a key risk factor for angiogenic dysfunction and cardiovascular diseases, including heart failure, hypertension, atherosclerosis, diabetes, and stroke. Members of the NAD+-dependent class III histone deacetylase family, sirtuins, are conserved regulators of aging and cardiovascular and cerebrovascular diseases. The sirtuin SIRT6 is predominantly located in the nucleus and shows deacetylase activity for acetylated histone 3 lysine 56 and lysine 9 as well as for some non-histone proteins. Over the past decade, experimental analyses in rodents and non-human primates have demonstrated the critical role of SIRT6 in extending lifespan. Recent studies highlighted the pleiotropic protective actions of SIRT6 in angiogenesis and cardiovascular diseases, including atherosclerosis, hypertension, heart failure, and stroke. Mechanistically, SIRT6 participates in vascular diseases via epigenetic regulation of endothelial cells, vascular smooth muscle cells, and immune cells. Importantly, SIRT6 activators (e.g., MDL-800/MDL-811) have provided therapeutic value for treating age-related vascular disorders. Here, we summarized the roles of sirtuins in cardiovascular diseases; reviewed recent advances in the understanding of SIRT6 in vascular biology, cardiovascular aging, and diseases; highlighted its therapeutic potential; and discussed future perspectives.
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Affiliation(s)
- Si-Chong Ren
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, Chengdu, China.
- Department of Nephrology, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, China.
| | - Xiangqi Chen
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, Chengdu, China.
| | - Hui Gong
- The Lab of Aging Research, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.
| | - Han Wang
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, Chengdu, China.
| | - Chuan Wu
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, Chengdu, China.
| | - Pei-Heng Li
- Department of Thyroid and Parathyroid Surgery, Laboratory of Thyroid and Parathyroid Disease, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
| | - Xiao-Feng Chen
- Department of Biochemistry and Molecular Biology, Basic Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Jia-Hua Qu
- Laboratory of Cardiovascular Science, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, USA
| | - Xiaoqiang Tang
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, Chengdu, China.
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13
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Yue X, Liu SL, Guo JN, Meng TG, Zhang XR, Li HX, Song CY, Wang ZB, Schatten H, Sun QY, Guo XP. Epitalon protects against post-ovulatory aging-related damage of mouse oocytes in vitro. Aging (Albany NY) 2022; 14:3191-3202. [PMID: 35413689 PMCID: PMC9037278 DOI: 10.18632/aging.204007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 01/28/2022] [Indexed: 11/25/2022]
Abstract
The developmental potential of oocytes decreases with time after ovulation in vivo or in vitro. Epitalon is a synthetic short peptide made of four amino acids (alanine, glutamic acid, aspartic acid, and glycine), based on a natural peptide called epithalamion extracted from the pineal gland. It is a potent antioxidant, comparable to melatonin, that may confer longevity benefits. The current study aims to test the protective effects of Epitalon on the quality of post-ovulatory aging oocytes. Epitalon at 0.1mM was added to the culture medium, and the quality of oocytes was evaluated at 6h, 12h, and 24h of culture. We found that 0.1mM Epitalon reduced intracellular reactive oxygen species. Epitalon treatment significantly decreased frequency of spindle defects and abnormal distribution of cortical granules during aging for 12h and 24h, while increased mitochondrial membrane potential and DNA copy number of mitochondria, thus decreasing apoptosis of oocytes by 24h of in vitro aging. Our results suggest that Epitalon can delay the aging process of oocytes in vitro via modulating mitochondrial activity and ROS levels.
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Affiliation(s)
- Xue Yue
- Department of Biochemistry and Molecular Biology, Basic Medical College, Shanxi Medical University, Taiyuan 030001, Shanxi, China.,Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Reproductive Science Institute, Taiyuan 030032, Shanxi, China.,State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Sai-Li Liu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jia-Ni Guo
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Tie-Gang Meng
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Xin-Ran Zhang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Hong-Xia Li
- Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Reproductive Science Institute, Taiyuan 030032, Shanxi, China
| | - Chun-Ying Song
- Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Reproductive Science Institute, Taiyuan 030032, Shanxi, China
| | - Zhen-Bo Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Heide Schatten
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO 65211, USA
| | - Qing-Yuan Sun
- Fertility Preservation Lab, Guangdong-Hong Kong Metabolism and Reproduction Joint Laboratory, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou 510320, Guangdong, China
| | - Xing-Ping Guo
- Department of Biochemistry and Molecular Biology, Basic Medical College, Shanxi Medical University, Taiyuan 030001, Shanxi, China.,Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Reproductive Science Institute, Taiyuan 030032, Shanxi, China
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14
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Michaeli J, Smoom R, Serruya N, El Ayoubi H, Rotshenker-Olshinka K, Srebnik N, Michaeli O, Eldar-Geva T, Tzfati Y. Leukocyte Telomere Length Correlates with Extended Female Fertility. Cells 2022; 11:cells11030513. [PMID: 35159322 PMCID: PMC8834216 DOI: 10.3390/cells11030513] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 01/23/2022] [Accepted: 01/31/2022] [Indexed: 12/04/2022] Open
Abstract
Current social trends of delayed reproduction to the fourth and fifth decade of life call for a better understanding of reproductive aging. Demographic studies correlated late reproduction with general health and longevity. Telomeres, the protective ends of eukaryotic chromosomes, were implicated in various aging-associated pathologies and longevity. To examine whether telomeres are also associated with reproductive aging, we measured by Southern analysis the terminal restriction fragments (TRF) in leukocytes of women delivering a healthy infant following a spontaneous pregnancy at 43–48 years of age. We compared them to age-matched previously fertile women who failed to conceive above age 41. The average TRF length in the extended fertility group (9350 bp) was significantly longer than in the normal fertility group (8850 bp; p-value = 0.03). Strikingly, excluding women with nine or more children increased the difference between the groups to over 1000 bp (9920 and 8880 bp; p-value = 0.0009). Nevertheless, we observed no apparent effects of pregnancy, delivery, or parity on telomere length. We propose that longer leukocyte telomere length reflects higher oocyte quality, which can compensate for other limiting physiological and behavioral factors and enable successful reproduction. Leukocyte telomere length should be further explored as a novel biomarker of oocyte quality for assessing reproductive potential and integrating family planning with demanding women’s careers.
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Affiliation(s)
- Jennia Michaeli
- Department of Obstetrics and Gynecology, Shaare Zedek Medical Center Affiliated with the Hebrew University School of Medicine, Jerusalem 9103102, Israel; (K.R.-O.); (N.S.); (T.E.-G.)
- Department of Genetics, The Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Givat Ram, Jerusalem 91904, Israel; (R.S.); (N.S.); (H.E.A.); (O.M.)
- Correspondence: (J.M.); (Y.T.)
| | - Riham Smoom
- Department of Genetics, The Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Givat Ram, Jerusalem 91904, Israel; (R.S.); (N.S.); (H.E.A.); (O.M.)
| | - Noa Serruya
- Department of Genetics, The Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Givat Ram, Jerusalem 91904, Israel; (R.S.); (N.S.); (H.E.A.); (O.M.)
| | - Hosniyah El Ayoubi
- Department of Genetics, The Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Givat Ram, Jerusalem 91904, Israel; (R.S.); (N.S.); (H.E.A.); (O.M.)
| | - Keren Rotshenker-Olshinka
- Department of Obstetrics and Gynecology, Shaare Zedek Medical Center Affiliated with the Hebrew University School of Medicine, Jerusalem 9103102, Israel; (K.R.-O.); (N.S.); (T.E.-G.)
| | - Naama Srebnik
- Department of Obstetrics and Gynecology, Shaare Zedek Medical Center Affiliated with the Hebrew University School of Medicine, Jerusalem 9103102, Israel; (K.R.-O.); (N.S.); (T.E.-G.)
| | - Ofir Michaeli
- Department of Genetics, The Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Givat Ram, Jerusalem 91904, Israel; (R.S.); (N.S.); (H.E.A.); (O.M.)
| | - Talia Eldar-Geva
- Department of Obstetrics and Gynecology, Shaare Zedek Medical Center Affiliated with the Hebrew University School of Medicine, Jerusalem 9103102, Israel; (K.R.-O.); (N.S.); (T.E.-G.)
| | - Yehuda Tzfati
- Department of Genetics, The Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Givat Ram, Jerusalem 91904, Israel; (R.S.); (N.S.); (H.E.A.); (O.M.)
- Correspondence: (J.M.); (Y.T.)
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15
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Bestetti I, Barbieri C, Sironi A, Specchia V, Yatsenko SA, De Donno MD, Caslini C, Gentilini D, Crippa M, Larizza L, Marozzi A, Rajkovic A, Toniolo D, Bozzetti MP, Finelli P. Targeted whole exome sequencing and Drosophila modelling to unveil the molecular basis of primary ovarian insufficiency. Hum Reprod 2021; 36:2975-2991. [PMID: 34480478 PMCID: PMC8523209 DOI: 10.1093/humrep/deab192] [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: 09/25/2020] [Revised: 07/29/2021] [Indexed: 11/25/2022] Open
Abstract
STUDY QUESTION Can a targeted whole exome sequencing (WES) on a cohort of women showing a primary ovarian insufficiency (POI) phenotype at a young age, combined with a study of copy number variations, identify variants in candidate genes confirming their deleterious effect on ovarian function? SUMMARY ANSWER This integrated approach has proved effective in identifying novel candidate genes unveiling mechanisms involved in POI pathogenesis. WHAT IS KNOWN ALREADY POI, a condition occurring in 1% of women under 40 years of age, affects women’s fertility leading to a premature loss of ovarian reserve. The genetic causes of POI are highly heterogeneous and several determinants contributing to its prominent oligogenic inheritance pattern still need to be elucidated. STUDY DESIGN, SIZE, DURATION WES screening for pathogenic variants of 41 Italian women with non-syndromic primary and early secondary amenorrhoea occurring before age 25 was replicated on another 60 POI patients, including 35 French and 25 American women, to reveal statistically significant shared variants. PARTICIPANTS/MATERIALS, SETTING, METHODS The Italian POI patients’ DNA were processed by targeted WES including 542 RefSeq genes expressed or functioning during distinct reproductive or ovarian processes (e.g. DNA repair, meiosis, oocyte maturation, folliculogenesis and menopause). Extremely rare variants were filtered and selected by means of a Fisher Exact test using several publicly available datasets. A case-control Burden test was applied to highlight the most significant genes using two ad-hoc control female cohorts. To support the obtained data, the identified genes were screened on a novel cohort of 60 Caucasian POI patients and the same case-control analysis was carried out. Comparative analysis of the human identified genes was performed on mouse and Drosophila melanogaster by analysing the orthologous genes in their ovarian phenotype, and two of the selected genes were fruit fly modelled to explore their role in fertility. MAIN RESULTS AND THE ROLE OF CHANCE The filtering steps applied to search for extremely rare pathogenic variants in the Italian cohort revealed 64 validated single-nucleotide variants/Indels in 59 genes in 30 out of 41 screened women. Burden test analysis highlighted 13 ovarian genes as being the most enriched and significant. To validate these findings, filtering steps and Burden analysis on the second cohort of Caucasian patients yielded 11 significantly enriched genes. Among them, AFP, DMRT3, MOV10, FYN and MYC were significant in both patient cohorts and hence were considered strong candidates for POI. Mouse and Drosophila comparative analysis evaluated a conserved role through the evolution of several candidates, and functional studies using a Drosophila model, when applicable, supported the conserved role of the MOV10 armitage and DMRT3 dmrt93B orthologues in female fertility. LARGE SCALE DATA The datasets for the Italian cohort generated during the current study are publicly available at ClinVar database (http://www.ncbi.nlm.nih.gov/clinvar/): accession numbers SCV001364312 to SCV001364375. LIMITATIONS, REASONS FOR CAUTION This is a targeted WES analysis hunting variants in candidate genes previously identified by different genomic approaches. For most of the investigated sporadic cases, we could not track the parental inheritance, due to unavailability of the parents’ DNA samples; in addition, we might have overlooked additional rare variants in novel candidate POI genes extracted from the exome data. On the contrary, we might have considered some inherited variants whose clinical significance is uncertain and might not be causative for the patients’ phenotype. Additionally, as regards the Drosophila model, it will be extremely important in the future to have more mutants or RNAi strains available for each candidate gene in order to validate their role in POI pathogenesis. WIDER IMPLICATIONS OF THE FINDINGS The genomic, statistical, comparative and functional approaches integrated in our study convincingly support the extremely heterogeneous oligogenic nature of POI, and confirm the maintenance across the evolution of some key genes safeguarding fertility and successful reproduction. Two principal classes of genes were identified: (i) genes primarily involved in meiosis, namely in synaptonemal complex formation, asymmetric division and oocyte maturation and (ii) genes safeguarding cell maintenance (piRNA and DNA repair pathways). STUDY FUNDING/COMPETING INTEREST(S) This work was supported by Italian Ministry of Health grants ‘Ricerca Corrente’ (08C621_2016 and 08C924_2019) provided to IRCCS Istituto Auxologico Italiano, and by ‘Piano Sostegno alla Ricerca’ (PSR2020_FINELLI_LINEA_B) provided by the University of Milan; M.P.B. was supported by Telethon-Italy (grant number GG14181). There are no conflicts of interest.
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Affiliation(s)
- I Bestetti
- Research Laboratory of Medical Cytogenetics and Molecular Genetics, IRCCS Istituto Auxologico Italiano, Milan, Italy.,Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano, Segrate, Milan, Italy
| | - C Barbieri
- Division of Genetics and Cell Biology, San Raffaele Research Institute and Vita Salute University, Milan, Italy
| | - A Sironi
- Research Laboratory of Medical Cytogenetics and Molecular Genetics, IRCCS Istituto Auxologico Italiano, Milan, Italy.,Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano, Segrate, Milan, Italy
| | - V Specchia
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce, Italy
| | - S A Yatsenko
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA, USA.,Department of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Research Institute, Pittsburgh, PA, USA.,Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - M D De Donno
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce, Italy
| | - C Caslini
- Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano, Segrate, Milan, Italy
| | - D Gentilini
- Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy.,Bioinformatics and Statistical Genomics Unit, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - M Crippa
- Research Laboratory of Medical Cytogenetics and Molecular Genetics, IRCCS Istituto Auxologico Italiano, Milan, Italy.,Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano, Segrate, Milan, Italy
| | - L Larizza
- Research Laboratory of Medical Cytogenetics and Molecular Genetics, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - A Marozzi
- Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano, Segrate, Milan, Italy
| | - A Rajkovic
- Department of Pathology, University of California San Francisco, San Francisco, CA, USA.,Department of Obstetrics, Gynecology and Reproductive Sciences, University of California San, Francisco, San Francisco, CA, USA.,Institute of Human Genetics, University of California San Francisco, San Francisco, CA, USA
| | - D Toniolo
- Division of Genetics and Cell Biology, San Raffaele Research Institute and Vita Salute University, Milan, Italy
| | - M P Bozzetti
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce, Italy
| | - P Finelli
- Research Laboratory of Medical Cytogenetics and Molecular Genetics, IRCCS Istituto Auxologico Italiano, Milan, Italy.,Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano, Segrate, Milan, Italy
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16
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Ge J, Li C, Sun H, Xin Y, Zhu S, Liu Y, Tang S, Han L, Huang Z, Wang Q. Telomere Dysfunction in Oocytes and Embryos From Obese Mice. Front Cell Dev Biol 2021; 9:617225. [PMID: 33553179 PMCID: PMC7858262 DOI: 10.3389/fcell.2021.617225] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 01/04/2021] [Indexed: 12/12/2022] Open
Abstract
Maternal obesity impairs oocyte quality and embryo development. However, the potential molecular pathways remain to be explored. In the present study, we examined the effects of obesity on telomere status in oocytes and embryos obtained from mice fed with high-fat diet (HFD). Of note, telomere shortening was observed in both oocytes and early embryos from obese mice, as evidenced by the reduced expression of telomerase reverse transcriptase and activity of telomerase. Moreover, quantitative analysis of telomere dysfunction-induced foci (TIFs) revealed that maternal obesity induces the defective telomeres in oocytes and embryos. Meanwhile, the high frequency of aneuploidy was detected in HFD oocytes and embryos as compared to controls, accompanying with the increased incidence of apoptotic blastocysts. In conclusion, these results indicate that telomere dysfunction might be a molecular pathway mediating the effects of maternal obesity on oocyte quality and embryo development.
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Affiliation(s)
- Juan Ge
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Congyang Li
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Hongzheng Sun
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Yongan Xin
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Shuai Zhu
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Yuan Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Shoubin Tang
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Longsen Han
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Zhenyue Huang
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Qiang Wang
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China.,Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China
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17
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Sławińska N, Krupa R. Molecular Aspects of Senescence and Organismal Ageing-DNA Damage Response, Telomeres, Inflammation and Chromatin. Int J Mol Sci 2021; 22:ijms22020590. [PMID: 33435578 PMCID: PMC7827783 DOI: 10.3390/ijms22020590] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/30/2020] [Accepted: 01/03/2021] [Indexed: 02/07/2023] Open
Abstract
Cells can become senescent in response to stress. Senescence is a process characterised by a stable proliferative arrest. Sometimes it can be beneficial—for example, it can suppress tumour development or take part in tissue repair. On the other hand, studies show that it is also involved in the ageing process. DNA damage response (DDR) is triggered by DNA damage or telomere shortening during cell division. When left unresolved, it may lead to the activation of senescence. Senescent cells secrete certain proteins in larger quantities. This phenomenon is referred to as senescence-associated secretory phenotype (SASP). SASP can induce senescence in other cells; evidence suggests that overabundance of senescent cells contributes to ageing. SASP proteins include proinflammatory cytokines and metalloproteinases, which degrade the extracellular matrix. Shortening of telomeres is another feature associated with organismal ageing. Older organisms have shorter telomeres. Restoring telomerase activity in mice not only slowed but also partially reversed the symptoms of ageing. Changes in chromatin structure during senescence include heterochromatin formation or decondensation and loss of H1 histones. During organismal ageing, cells can experience heterochromatin loss, DNA demethylation and global histone loss. Cellular and organismal ageing are both complex processes with many aspects that are often related. The purpose of this review is to bring some of these aspects forward and provide details regarding them.
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18
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M'kacher R, Colicchio B, Marquet V, Borie C, Najar W, Hempel WM, Heidingsfelder L, Oudrhiri N, Al Jawhari M, Wilhelm-Murer N, Miguet M, Dieterlen A, Deschênes G, Tabet AC, Junker S, Grynberg M, Fenech M, Bennaceur-Griscelli A, Voisin P, Carde P, Jeandidier E, Yardin C. Telomere aberrations, including telomere loss, doublets, and extreme shortening, are increased in patients with infertility. Fertil Steril 2020; 115:164-173. [PMID: 33272625 DOI: 10.1016/j.fertnstert.2020.07.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 07/02/2020] [Accepted: 07/06/2020] [Indexed: 01/07/2023]
Abstract
OBJECTIVE To test the hypothesis that telomere shortening and/or loss are risk factors for infertility. DESIGN Retrospective analysis of the telomere status in patients with infertility using conventional cytogenetic data collected prospectively. SETTING Academic centers. PATIENT(S) Cytogenetic slides with cultured peripheral lymphocytes from 50 patients undergoing fertility treatment and 150 healthy donors, including 100 donors matched for age. INTERVENTION(S) Cytogenetic slides were used to detect chromosomal and telomere aberrations. MAIN OUTCOME MEASURE(S) Telomere length and telomere aberrations were analyzed after telomere and centromere staining. RESULT(S) The mean telomere length of patients consulting for infertility was significantly less than that of healthy donors of similar age. Moreover, patients with infertility showed significantly more extreme telomere loss and telomere doublet formation than healthy controls. Telomere shortening and/or telomere aberrations were more pronounced in patients with structural chromosomal aberrations. Dicentric chromosomes were identified in 6/13 patients, with constitutional chromosomal aberrations leading to chromosomal instability that correlated with chromosomal end-to-end fusions. CONCLUSION(S) Our findings demonstrate the feasibility of analyzing telomere aberrations in addition to chromosomal aberrations, using cytogenetic slides. Telomere attrition and/or dysfunction represent the main common cytogenetic characteristic of patients with infertility, leading to potential implications for fertility assessment. Pending further studies, these techniques that correlate the outcome of assisted reproduction and telomere integrity status may represent a novel and useful diagnostic and/or prognostic tool for medical care in this field.
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Affiliation(s)
- Radhia M'kacher
- Cell Environment, DNA Damage Research & Development, Paris, France.
| | - Bruno Colicchio
- Institut de Recherche en Informatique, Mathématiques, Automatique et Signal, Université de Haute-Alsace, Mulhouse, France
| | - Valentine Marquet
- Service de Cytogénétique, Génétique Médicale, et Biologie de la Reproduction Hôpital de la Mère et de l'Enfant, Centre hospitalo-universitaire Dupuytren, Limoges, France
| | - Claire Borie
- Assitance Pubique-Hopitaux de Paris (APHP)-Service d'hématologie-Oncohématologie Moléculaire et Cytogénétique Hôpital Paul Brousse Université Paris Saclay/INSERM 935, Villejuif, France
| | - Wala Najar
- Cell Environment, DNA Damage Research & Development, Paris, France; Faculté de médecine Paris Centre, Université de Paris, Paris, France
| | - William M Hempel
- Cell Environment, DNA Damage Research & Development, Paris, France
| | | | - Noufissa Oudrhiri
- Assitance Pubique-Hopitaux de Paris (APHP)-Service d'hématologie-Oncohématologie Moléculaire et Cytogénétique Hôpital Paul Brousse Université Paris Saclay/INSERM 935, Villejuif, France
| | | | - Nadège Wilhelm-Murer
- Service de génétique Groupe Hospitalier de la Région de Mulhouse et Sud Alsace, Mulhouse, France
| | - Marguerite Miguet
- Service de génétique Groupe Hospitalier de la Région de Mulhouse et Sud Alsace, Mulhouse, France
| | - Alain Dieterlen
- Institut de Recherche en Informatique, Mathématiques, Automatique et Signal, Université de Haute-Alsace, Mulhouse, France
| | | | | | - Steffen Junker
- Institute of Biomedicine, University of Aarhus, Aarhus, Denmark
| | - Michael Grynberg
- Department of Reproductive Medicine and Fertility Preservation, Hôpital Antoine Béclère, Clamart, France
| | - Michael Fenech
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia, Australia; Genome Health Foundation, North Brighton, South Australia, Australia
| | - Annelise Bennaceur-Griscelli
- Assitance Pubique-Hopitaux de Paris (APHP)-Service d'hématologie-Oncohématologie Moléculaire et Cytogénétique Hôpital Paul Brousse Université Paris Saclay/INSERM 935, Villejuif, France
| | - Philippe Voisin
- Cell Environment, DNA Damage Research & Development, Paris, France
| | - Patrice Carde
- Department of Hematology, Gustave Roussy Cancer Campus, Villejuif, France
| | - Eric Jeandidier
- Service de génétique Groupe Hospitalier de la Région de Mulhouse et Sud Alsace, Mulhouse, France
| | - Catherine Yardin
- Service de Cytogénétique, Génétique Médicale, et Biologie de la Reproduction Hôpital de la Mère et de l'Enfant, Centre hospitalo-universitaire Dupuytren, Limoges, France; CNRS, XLIM, UMR 7252, University of Limoges, Limoges, France
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19
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Vazquez BN, Vaquero A, Schindler K. Sirtuins in female meiosis and in reproductive longevity. Mol Reprod Dev 2020; 87:1175-1187. [PMID: 33184962 PMCID: PMC7775317 DOI: 10.1002/mrd.23437] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 11/01/2020] [Indexed: 01/03/2023]
Abstract
Transmission of genetic material through high-quality gametes to progeny requires accurate homologous chromosome recombination and segregation during meiosis. A failure to accomplish these processes can have major consequences in reproductive health, including infertility, and development disorders in offspring. Sirtuins, a family of NAD+ -dependent protein deacetylases and ADP-ribosyltransferases, play key roles in genome maintenance, metabolism, and aging. In recent years, Sirtuins have emerged as regulators of several reproductive processes and interventions aiming to target Sirtuin activity are of great interest in the reproductive biology field. Sirtuins are pivotal to protect germ cells against oxidative stress, a major determinant influencing ovarian aging and the quality of gametes. Sirtuins also safeguard the integrity of the genome through epigenetic programs required for regulating gene repression, DNA repair, and chromosome segregation, among others. Although these functions are relatively well characterized in many somatic tissues, how they contribute to reproductive functions is not well understood. This review summarizes our current knowledge on the role of Sirtuins in female reproductive systems and discusses the underlying molecular pathways. In addition, we highlight the importance of Sirtuins as antiaging factors in the ovary and summarize current preclinical efforts to identify treatments to extend female reproductive longevity.
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Affiliation(s)
- Berta N. Vazquez
- Chromatin Biology Laboratory, Josep Carreras Leukaemia Research Institute (IJC), Ctra de Can Ruti, Camí de les Escoles s/n, 08916, Badalona, Barcelona, Catalonia, Spain
- Department de Biologia Cellular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | - Alejandro Vaquero
- Chromatin Biology Laboratory, Josep Carreras Leukaemia Research Institute (IJC), Ctra de Can Ruti, Camí de les Escoles s/n, 08916, Badalona, Barcelona, Catalonia, Spain
| | - Karen Schindler
- Human Genetics Institute of New Jersey (HGINJ), Department of Genetics, Rutgers University, 145 Bevier Rd., Piscataway, NJ, 08854, USA
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20
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Kawagoe Y, Kawashima I, Sato Y, Okamoto N, Matsubara K, Kawamura K. CXCL5-CXCR2 signaling is a senescence-associated secretory phenotype in preimplantation embryos. Aging Cell 2020; 19:e13240. [PMID: 32959976 PMCID: PMC7576282 DOI: 10.1111/acel.13240] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 08/15/2020] [Accepted: 08/22/2020] [Indexed: 12/12/2022] Open
Abstract
Pregnancy rate of women decreases with age due to declining quality of oocytes and embryos. However, there is no established method to improve pregnancy rate in aging women. In this study, we identified a senescence-associated secretory phenotype (SASP) factor partially responsible for the decline in embryo implantation potential. Based on microarray analysis using young and aging human embryos at the same morphological grade, 702 genes showed >fivefold increases in aging human blastocysts. Among these genes, C-X-C motif chemokine 5 (CXCL5) showed 7.7-fold increases in aging human blastocysts. However, no-age-dependent changes in expression of the CXCR2, the cognate receptor for CXCL5, were found. In aging mice, Cxcl5 transcript levels were also increased in oocytes and embryos. Treatment of young mouse embryos with CXCL5 decreased implantation rates, together with increased expression of aging markers (P53, P21, Pai-1, and Il-6). Moreover, CXCL5 treatment suppressed trophoblast outgrowth in young mouse blastocysts. Conversely, suppression of CXCL5-CXCR2 signaling in aging mouse embryos using neutralizing antibodies and a receptor antagonist improved the implantation rate, leading to increases in pregnancy and delivery of normal pups. The gene expression pattern of these embryos was comparable to that in young mouse embryos showing enriched cell proliferation-related pathways. In conclusion, we identified CXCL5 as a SASP factor in human and mouse embryos and suppression of CXCL5-CXCR2 signaling during embryo culture improved pregnancy success in aging mice. Future analysis on CXCL5-CXCR2 signaling suppression in human embryos could be the basis to improve embryo development and pregnancy outcome in middle-aged infertile patients.
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Affiliation(s)
- Yuta Kawagoe
- Department of Obstetrics and Gynecology Advanced Reproduction Research Center International University of Health and Welfare School of Medicine Narita Japan
- The United Graduate School of Agriculture Sciences Iwate University Morioka Japan
| | - Ikko Kawashima
- Institute of Advanced BioMedical Engineering and Science Tokyo Women's Medical University Shinjuku‐ku Japan
| | - Yorino Sato
- Department of Obstetrics and Gynecology Advanced Reproduction Research Center International University of Health and Welfare School of Medicine Narita Japan
| | - Naoki Okamoto
- Department of Obstetrics and Gynecology Advanced Reproduction Research Center International University of Health and Welfare School of Medicine Narita Japan
| | - Kazuei Matsubara
- The United Graduate School of Agriculture Sciences Iwate University Morioka Japan
| | - Kazuhiro Kawamura
- Department of Obstetrics and Gynecology Advanced Reproduction Research Center International University of Health and Welfare School of Medicine Narita Japan
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21
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Wei H, Khawar MB, Tang W, Wang L, Wang L, Liu C, Jiang H, Li W. Sirt6 is required for spermatogenesis in mice. Aging (Albany NY) 2020; 12:17099-17113. [PMID: 32915773 PMCID: PMC7521524 DOI: 10.18632/aging.103641] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 06/19/2020] [Indexed: 01/24/2023]
Abstract
SIRT6, a nuclear protein, has been implicated in a number of essential cellular processes, such as the DNA damage response, metabolic homeostasis, inflammation, tumorigenesis and aging. However, the role of Sirt6 in the regulation of spermatogenesis is yet unknown. In the present study, we successfully generated Sirt6-/- mice on a C57BL6/ICR mixed background and found that some Sirt6-/- mice survived beyond eight weeks. We further revealed that spermatogenesis in Sirt6-/- mice was arrested at the elongated spermatid stage. Sirt6-/- male mice were completely infertile and had an increased number of apoptotic spermatids. To our surprise, deacetylation activities of SIRT6 on H3K9ac, H3K18ac and H3K56c were not required for spermatogenesis. Therefore, our findings establish a novel link between Sirt6 and male fertility, suggesting an essential role of Sirt6 in spermatogenesis.
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Affiliation(s)
- Huafang Wei
- 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
| | - Muhammad Babar Khawar
- 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
| | - Wenhao Tang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Lina 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
| | - Liying 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
| | - 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
| | - Hui Jiang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China,Department of Andrology, Peking University Third Hospital, Beijing 100191, China,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China,Department of Human Sperm Bank, Peking University Third Hospital, Beijing 100191, China
| | - Wei Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
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Yang Q, Hu J, Yang Y, Chen Z, Feng J, Zhu Z, Wang H, Yang D, Liang W, Ding G. Sirt6 deficiency aggravates angiotensin II-induced cholesterol accumulation and injury in podocytes. Theranostics 2020; 10:7465-7479. [PMID: 32642006 PMCID: PMC7330847 DOI: 10.7150/thno.45003] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 05/28/2020] [Indexed: 12/11/2022] Open
Abstract
Disturbed renal lipid metabolism, especially cholesterol dysregulation plays a crucial role in the pathogenesis of chronic kidney disease (CKD). We recently reported that angiotensin (Ang) II could induce cholesterol accumulation and injury in podocytes. However, the underlying mechanisms for these alterations remain unknown. Methods: Bioinformatics analysis of renal biopsy specimens from patients with hypertensive nephropathy (HN) suggests the involvement of Sirtuin 6 (Sirt6) in Ang II-induced dysregulation of glomerular cholesterol. Using a podocyte-specific Sirt6 knockout mouse model, the effects of Sirt6 on Ang II-induced cholesterol accumulation in podocytes and the therapeutic efficacies of cholesterol-lowering agents were evaluated. Results: Cholesterol accumulation was detected in the podocytes of Ang II-infused mice, whereas selective deletion of Sirt6 in podocytes not only increased cholesterol accumulation in these cells but also exacerbated Ang II-induced kidney injury. Deletion of Sirt6 also attenuated the protective effect of cyclodextrin (CD) on Ang II-induced urinary albumin excretion, glomerulosclerosis and podocyte injury. In addition, we demonstrated that Sirt6 affected cholesterol efflux in podocytes by regulating the expression of ATP-binding cassette transporter G1 (ABCG1). Conclusions: These findings provide evidence that Sirt6 is a potential target for renin-angiotensin system (RAS)-associated podocyte injury and provide a rationale for the application of cholesterol-lowering agents in patients with CKD.
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23
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Long-lived post-mitotic cell aging: is a telomere clock at play? Mech Ageing Dev 2020; 189:111256. [PMID: 32380018 DOI: 10.1016/j.mad.2020.111256] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 04/25/2020] [Accepted: 04/27/2020] [Indexed: 12/27/2022]
Abstract
Senescence is a cellular response to stress for both dividing and post-mitotic cells. Noteworthy, long-lived post-mitotic cells (collectively named LLPMCs), which can live for decades in the organism, can exhibit a distinct type of cellular aging characterized by a progressive functional decline not associated to an overt senescence phenotype. The age-related drivers of senescence and aging in LLPMCs remain largely unknown. There is evidence that an increased production of reactive oxygen species (ROS) due to dysfunctional mitochondria, coupled with an inherent inability of cellular-degradation mechanisms to remove damaged molecules, is responsible for senescence and aging in LLPMC. Although telomeric DNA shortening, by nature linked to cell division, is generally not considered as a driver of LLPMC aging and senescence, we discuss recent reports revealing the existence of age-related telomere changes in LLPMC. These findings reveal unexpected roles for telomeres in LLPMC function and invite us to consider the hypothesis of a complex telomere clock involved in both dividing and non-dividing cell aging.
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24
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Zhang Z, Schlamp F, Huang L, Clark H, Brayboy L. Inflammaging is associated with shifted macrophage ontogeny and polarization in the aging mouse ovary. Reproduction 2020; 159:325-337. [PMID: 31940276 PMCID: PMC7066623 DOI: 10.1530/rep-19-0330] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 01/14/2020] [Indexed: 12/14/2022]
Abstract
The fertility of women declines sharply after age 35 and is essentially lost upon menopause at age 51. The ovary plays an important part in aging-associated changes in women's physiology since it is an essential component of both the reproductive and endocrine systems. Several previous studies in mice have shown that the ovarian tissue goes through drastic changes over the course of aging and exhibits signs of aging-associated chronic inflammation (inflammaging), which may contribute to the marked decline of oocyte quality in aged individuals. To further examine aging-associated gene expression changes in the ovary and to characterize the development of inflammaging, we performed detailed transcriptomic analysis of whole ovaries from mice of six different age groups over the mouse reproductive lifespan and identified more than 5000 genes with significant expression change over the course of aging. Intriguingly, we found aging-associated changes in the expression of several markers that indicate alterations in the composition of ovarian macrophages, which are known to be central players of inflammaging. Using flow cytometry, we analyzed and compared macrophage populations and polarization in young and old ovaries and found a significant increase in monocyte recruitment and macrophage alternative activation (M2) in the old ovaries compared to those in young. Our results are consistent with previous findings of aging-associated increase of fibrosis in the ovarian stromal extracellular matrix, and they provide new clues about the development of inflammaging in the mammalian ovary.
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Affiliation(s)
- Zijing Zhang
- Department of Obstetrics and Gynecology, Division of Research, Women & Infants Hospital of Rhode Island, 101 Dudley Street, Providence, RI 02905, USA
| | - Florencia Schlamp
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY
| | - Lu Huang
- Department of Microbiology and immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY
| | - Haley Clark
- Department of Obstetrics and Gynecology, Division of Research, Women & Infants Hospital of Rhode Island, 101 Dudley Street, Providence, RI 02905, USA
| | - Lynae Brayboy
- Department of Obstetrics and Gynecology, Division of Research, Women & Infants Hospital of Rhode Island, 101 Dudley Street, Providence, RI 02905, USA
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Women & Infants Hospital of Rhode Island, 101 Dudley Street, Providence, RI 02905, USA
- Alpert Medical School of Brown University, 222 Richmond Street Providence, RI 02903, USA
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University 185 Meeting Street, Providence, RI 02912, USA
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25
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Monaghan P, Metcalfe NB. The deteriorating soma and the indispensable germline: gamete senescence and offspring fitness. Proc Biol Sci 2019; 286:20192187. [PMID: 31847776 DOI: 10.1098/rspb.2019.2187] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The idea that there is an impenetrable barrier that separates the germline and soma has shaped much thinking in evolutionary biology and in many other disciplines. However, recent research has revealed that the so-called 'Weismann Barrier' is leaky, and that information is transferred from soma to germline. Moreover, the germline itself is now known to age, and to be influenced by an age-related deterioration of the soma that houses and protects it. This could reduce the likelihood of successful reproduction by old individuals, but also lead to long-term deleterious consequences for any offspring that they do produce (including a shortened lifespan). Here, we review the evidence from a diverse and multidisciplinary literature for senescence in the germline and its consequences; we also examine the underlying mechanisms responsible, emphasizing changes in mutation rate, telomere loss, and impaired mitochondrial function in gametes. We consider the effect on life-history evolution, particularly reproductive scheduling and mate choice. Throughout, we draw attention to unresolved issues, new questions to consider, and areas where more research is needed. We also highlight the need for a more comparative approach that would reveal the diversity of processes that organisms have evolved to slow or halt age-related germline deterioration.
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Affiliation(s)
- Pat Monaghan
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Graham Kerr Building, Glasgow G12 8QQ, UK
| | - Neil B Metcalfe
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Graham Kerr Building, Glasgow G12 8QQ, UK
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26
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Sasaki H, Hamatani T, Kamijo S, Iwai M, Kobanawa M, Ogawa S, Miyado K, Tanaka M. Impact of Oxidative Stress on Age-Associated Decline in Oocyte Developmental Competence. Front Endocrinol (Lausanne) 2019; 10:811. [PMID: 31824426 PMCID: PMC6882737 DOI: 10.3389/fendo.2019.00811] [Citation(s) in RCA: 160] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Accepted: 11/06/2019] [Indexed: 12/20/2022] Open
Abstract
Reproductive capacity in women starts to decline beyond their mid-30s and pregnancies in older women result in higher rates of miscarriage with aneuploidy. Age-related decline in fertility is strongly attributed to ovarian aging, diminished ovarian reserves, and decreased developmental competence of oocytes. In this review, we discuss the underlying mechanisms of age-related decline in oocyte quality, focusing on oxidative stress (OS) in oocytes. The primary cause is the accumulation of spontaneous damage to the mitochondria arising from increased reactive oxygen species (ROS) in oocytes, generated by the mitochondria themselves during daily biological metabolism. Mitochondrial dysfunction reduces ATP synthesis and influences the meiotic spindle assembly responsible for chromosomal segregation. Moreover, reproductively aged oocytes produce a decline in the fidelity of the protective mechanisms against ROS, namely the ROS-scavenging metabolism, repair of ROS-damaged DNA, and the proteasome and autophagy system for ROS-damaged proteins. Accordingly, increased ROS and increased vulnerability of oocytes to ROS lead to spindle instability, chromosomal abnormalities, telomere shortening, and reduced developmental competence of aged oocytes.
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Affiliation(s)
- Hiroyuki Sasaki
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - Toshio Hamatani
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
- *Correspondence: Toshio Hamatani
| | - Shintaro Kamijo
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - Maki Iwai
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - Masato Kobanawa
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - Seiji Ogawa
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - Kenji Miyado
- National Center for Child Health and Development (NCCHD), Tokyo, Japan
| | - Mamoru Tanaka
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
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