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Kordowitzki P, Graczyk S, Haghani A, Klutstein M. Oocyte Aging: A Multifactorial Phenomenon in A Unique Cell. Aging Dis 2024; 15:5-21. [PMID: 37307833 PMCID: PMC10796106 DOI: 10.14336/ad.2023.0527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 05/27/2023] [Indexed: 06/14/2023] Open
Abstract
The oocyte is considered to be the largest cell in mammalian species. Women hoping to become pregnant face a ticking biological clock. This is becoming increasingly challenging as an increase in life expectancy is accompanied by the tendency to conceive at older ages. With advancing maternal age, the fertilized egg will exhibit lower quality and developmental competence, which contributes to increased chances of miscarriage due to several causes such as aneuploidy, oxidative stress, epigenetics, or metabolic disorders. In particular, heterochromatin in oocytes and with it, the DNA methylation landscape undergoes changes. Further, obesity is a well-known and ever-increasing global problem as it is associated with several metabolic disorders. More importantly, both obesity and aging negatively affect female reproduction. However, among women, there is immense variability in age-related decline of oocytes' quantity, developmental competence, or quality. Herein, the relevance of obesity and DNA-methylation will be discussed as these aspects have a tremendous effect on female fertility, and it is a topic of continuous and widespread interest that has yet to be fully addressed for the mammalian oocyte.
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Affiliation(s)
- Pawel Kordowitzki
- Department of Preclinical and Basic Sciences, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Torun, Poland.
| | - Szymon Graczyk
- Department of Preclinical and Basic Sciences, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Torun, Poland.
| | - Amin Haghani
- Department of Human Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA.
- Altos Labs, San Diego, CA, USA.
| | - Michael Klutstein
- Institute of Biomedical and Oral Research, Hebrew University of Jerusalem, Jerusalem, Israel
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Luz-Madrigal A, Grajales-Esquivel E, Tangeman J, Kosse S, Liu L, Wang K, Fausey A, Liang C, Tsonis PA, Del Rio-Tsonis K. DNA demethylation is a driver for chick retina regeneration. Epigenetics 2020; 15:998-1019. [PMID: 32290791 PMCID: PMC7518676 DOI: 10.1080/15592294.2020.1747742] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 02/26/2020] [Accepted: 03/09/2020] [Indexed: 01/01/2023] Open
Abstract
Cellular reprogramming resets the epigenetic landscape to drive shifts in transcriptional programmes and cell identity. The embryonic chick can regenerate a complete neural retina, after retinectomy, via retinal pigment epithelium (RPE) reprogramming in the presence of FGF2. In this study, we systematically analysed the reprogramming competent chick RPE prior to injury, and during different stages of reprogramming. In addition to changes in the expression of genes associated with epigenetic modifications during RPE reprogramming, we observed dynamic changes in histone marks associated with bivalent chromatin (H3K27me3/H3K4me3) and intermediates of the process of DNA demethylation including 5hmC and 5caC. Comprehensive analysis of the methylome by whole-genome bisulphite sequencing (WGBS) confirmed extensive rearrangements of DNA methylation patterns including differentially methylated regions (DMRs) found at promoters of genes associated with chromatin organization and fibroblast growth factor production. We also identified Tet methylcytosine dioxygenase 3 (TET3) as an important factor for DNA demethylation and retina regeneration, capable of reprogramming RPE in the absence of exogenous FGF2. In conclusion, we demonstrate that injury early in RPE reprogramming triggers genome-wide dynamic changes in chromatin, including bivalent chromatin and DNA methylation. In the presence of FGF2, these dynamic modifications are further sustained in the commitment to form a new retina. Our findings reveal active DNA demethylation as an important process that may be applied to remove the epigenetic barriers in order to regenerate retina in mammals. ABBREVIATIONS bp: Base pair; DMR: Differentially methylated region; DMC: Differentially methylated cytosines; GFP: Green fluorescent protein; PCR: Polymerase chain reaction. TET: Ten-eleven translocation; RPE: retinal pigment epithelium.
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Affiliation(s)
- Agustín Luz-Madrigal
- Department of Biology and Center for Visual Sciences at Miami University, Miami University, Oxford, OH, USA
- Department of Biology and Center for Stem Cell & Organoid Medicine (CuSTOM), Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Erika Grajales-Esquivel
- Department of Biology and Center for Visual Sciences at Miami University, Miami University, Oxford, OH, USA
| | - Jared Tangeman
- Department of Biology and Center for Visual Sciences at Miami University, Miami University, Oxford, OH, USA
| | - Sarah Kosse
- Department of Biology and Center for Visual Sciences at Miami University, Miami University, Oxford, OH, USA
| | - Lin Liu
- Department of Biology and Center for Visual Sciences at Miami University, Miami University, Oxford, OH, USA
| | - Kai Wang
- Department of Biology and Center for Visual Sciences at Miami University, Miami University, Oxford, OH, USA
| | - Andrew Fausey
- Department of Biology and Center for Visual Sciences at Miami University, Miami University, Oxford, OH, USA
| | - Chun Liang
- Department of Biology and Center for Visual Sciences at Miami University, Miami University, Oxford, OH, USA
- Department of Computer Science and Software Engineering, Miami University, Oxford, OH, USA
| | - Panagiotis A. Tsonis
- Department of Biology, University of Dayton and Center for Tissue Regeneration and Engineering at the University of Dayton (TREND), Dayton, OH, USA
| | - Katia Del Rio-Tsonis
- Department of Biology and Center for Visual Sciences at Miami University, Miami University, Oxford, OH, USA
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Thakur A, Wong JCH, Wang EY, Lotto J, Kim D, Cheng JC, Mingay M, Cullum R, Moudgil V, Ahmed N, Tsai SH, Wei W, Walsh CP, Stephan T, Bilenky M, Fuglerud BM, Karimi MM, Gonzalez FJ, Hirst M, Hoodless PA. Hepatocyte Nuclear Factor 4-Alpha Is Essential for the Active Epigenetic State at Enhancers in Mouse Liver. Hepatology 2019; 70:1360-1376. [PMID: 30933372 PMCID: PMC6773525 DOI: 10.1002/hep.30631] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 03/27/2019] [Indexed: 12/11/2022]
Abstract
Cell-fate determination is influenced by interactions between master transcription factors (TFs) and cis-regulatory elements. Hepatocyte nuclear factor 4 alpha (HNF4A), a liver-enriched TF, acts as a master controller in specification of hepatic progenitor cells by regulating a network of TFs to control onset of hepatocyte cell fate. Using analysis of genome-wide histone modifications, DNA methylation, and hydroxymethylation in mouse hepatocytes, we show that HNF4A occupies active enhancers in hepatocytes and is essential for active histone and DNA signatures, especially acetylation of lysine 27 of histone 3 (H3K27ac) and 5-hydroxymethylcytosine (5hmC). In mice lacking HNF4A protein in hepatocytes, we observed a decrease in both H3K27ac and hydroxymethylation at regions bound by HNF4A. Mechanistically, HNF4A-associated hydroxymethylation (5hmC) requires its interaction with ten-eleven translocation methylcytosine dioxygenase 3 (TET3), a protein responsible for oxidation from 5mC to 5hmC. Furthermore, HNF4A regulates TET3 expression in liver by directly binding to an enhancer region. Conclusion: In conclusion, we identified that HNF4A is required for the active epigenetic state at enhancers that amplifies transcription of genes in hepatocytes.
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Affiliation(s)
- Avinash Thakur
- Terry Fox Laboratory, BC Cancer, Vancouver, British Columbia, Canada, V5Z 1L3,Department of Medical Genetics, University of British Columbia, Vancouver, Canada, V6T 1Z4
| | - Jasper C. H. Wong
- Department of Microbiology and Immunology, Michael Smith Laboratories Centre for High-Throughput Biology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Evan Y. Wang
- Terry Fox Laboratory, BC Cancer, Vancouver, British Columbia, Canada, V5Z 1L3
| | - Jeremy Lotto
- Terry Fox Laboratory, BC Cancer, Vancouver, British Columbia, Canada, V5Z 1L3
| | - Donghwan Kim
- Center of Cancer Research, National Cancer Institute, Bethesda MD 2089
| | - Jung-Chien Cheng
- Terry Fox Laboratory, BC Cancer, Vancouver, British Columbia, Canada, V5Z 1L3
| | - Matthew Mingay
- Department of Microbiology and Immunology, Michael Smith Laboratories Centre for High-Throughput Biology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Rebecca Cullum
- Terry Fox Laboratory, BC Cancer, Vancouver, British Columbia, Canada, V5Z 1L3
| | - Vaishali Moudgil
- Terry Fox Laboratory, BC Cancer, Vancouver, British Columbia, Canada, V5Z 1L3
| | - Nafeel Ahmed
- Terry Fox Laboratory, BC Cancer, Vancouver, British Columbia, Canada, V5Z 1L3
| | - Shu-Huei Tsai
- Terry Fox Laboratory, BC Cancer, Vancouver, British Columbia, Canada, V5Z 1L3
| | - Wei Wei
- Terry Fox Laboratory, BC Cancer, Vancouver, British Columbia, Canada, V5Z 1L3
| | - Colum P. Walsh
- Genomic Medicine Research Group, Centre for Molecular Biosciences, Biomedical Sciences Research Institute, Ulster University, Coleraine, BT52 1SA, UK
| | - Tabea Stephan
- Terry Fox Laboratory, BC Cancer, Vancouver, British Columbia, Canada, V5Z 1L3
| | - Misha Bilenky
- Genome Sciences Centre, BC Cancer, Vancouver, British Columbia, Canada
| | - Bettina M. Fuglerud
- Terry Fox Laboratory, BC Cancer, Vancouver, British Columbia, Canada, V5Z 1L3,Department of Biosciences, University of Oslo, Oslo, Norway, 0316
| | | | - Frank J. Gonzalez
- Center of Cancer Research, National Cancer Institute, Bethesda MD 2089
| | - Martin Hirst
- Department of Microbiology and Immunology, Michael Smith Laboratories Centre for High-Throughput Biology, University of British Columbia, Vancouver, British Columbia, Canada,Genome Sciences Centre, BC Cancer, Vancouver, British Columbia, Canada
| | - Pamela A. Hoodless
- Terry Fox Laboratory, BC Cancer, Vancouver, British Columbia, Canada, V5Z 1L3,Department of Medical Genetics, University of British Columbia, Vancouver, Canada, V6T 1Z4,School of Biomedical Engineering, University of British Columbia, Vancouver, Canada, V6T 1Z4
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Liu C, Sun X, Wang Z, Le Q, Liu P, Jiang C, Wang F, Ma L. Retrieval-Induced Upregulation of Tet3 in Pyramidal Neurons of the Dorsal Hippocampus Mediates Cocaine-Associated Memory Reconsolidation. Int J Neuropsychopharmacol 2017; 21:255-266. [PMID: 29106571 PMCID: PMC5838812 DOI: 10.1093/ijnp/pyx099] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 10/27/2017] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Memory retrieval refers to reexposure to information previously encoded and stored in the brain. Following retrieval, a once-consolidated memory destabilizes and undergoes reconsolidation, during which gene expression changes to restabilize memory. Investigating epigenetic regulation during reconsolidation could provide insights into normal memory formation and pathological memory associated with psychiatric disorders. METHODS We used cocaine-induced conditioned place preference to assess the cocaine-associated memory of mice and used chemogenetic methods to manipulate the activity of the pyramidal neurons in the dorsal hippocampus. We isolated the ribosome-associated transcripts from the excitatory neurons in the dorsal hippocampus by RiboTag purification to identify the potential epigenetic regulators, and we specifically knocked down gene expression in pyramidal neurons with a Cre-dependent lentivirus. RESULTS Chemogenetically silencing the activity of the pyramidal neurons in the dorsal hippocampus immediately after memory retrieval markedly impaired memory reconsolidation, and the ribosome-associated mRNA level of the ten-eleven translocation (Tet) family methylcytosine dioxygenase Tet3, but not Tet1 or Tet2, was dramatically upregulated 10 minutes after memory retrieval. The protein level of Tet3 in the dorsal hippocampus but not in the anterior cingulate cortex was dramatically increased 1 hour after memory retrieval. Specifically, knockdown of Tet3 in pyramidal neurons in the dorsal hippocampus decreased the activation of pyramidal neurons and impaired the reconsolidation of cocaine-associated memory. CONCLUSIONS Our findings highlight the new function of the DNA demethylation regulator Tet3 in pyramidal neurons of the dorsal hippocampus in regulating the reconsolidation of cocaine-associated memory.
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Affiliation(s)
- Cao Liu
- The State Key Laboratory of Medical Neurobiology and Pharmacology Research Center, School of Basic Medical
Sciences and Institutes of Brain Science, and the Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China
| | - Xue Sun
- The State Key Laboratory of Medical Neurobiology and Pharmacology Research Center, School of Basic Medical
Sciences and Institutes of Brain Science, and the Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China
| | - Zhilin Wang
- The State Key Laboratory of Medical Neurobiology and Pharmacology Research Center, School of Basic Medical
Sciences and Institutes of Brain Science, and the Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China
| | - Qiumin Le
- The State Key Laboratory of Medical Neurobiology and Pharmacology Research Center, School of Basic Medical
Sciences and Institutes of Brain Science, and the Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China
| | - Peipei Liu
- The State Key Laboratory of Medical Neurobiology and Pharmacology Research Center, School of Basic Medical
Sciences and Institutes of Brain Science, and the Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China
| | - Changyou Jiang
- The State Key Laboratory of Medical Neurobiology and Pharmacology Research Center, School of Basic Medical
Sciences and Institutes of Brain Science, and the Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China
| | - Feifei Wang
- The State Key Laboratory of Medical Neurobiology and Pharmacology Research Center, School of Basic Medical
Sciences and Institutes of Brain Science, and the Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China,Feifei Wang, PhD, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China ()
| | - Lan Ma
- The State Key Laboratory of Medical Neurobiology and Pharmacology Research Center, School of Basic Medical
Sciences and Institutes of Brain Science, and the Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China,Correspondence: Lan Ma, PhD, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China ()
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