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Liu C, Yang P, Wang X, Xiang B, E G, Huang Y. Candidate circRNAs related to skeletal muscle development in Dazu black goats. Anim Biotechnol 2024; 35:2286609. [PMID: 38032316 DOI: 10.1080/10495398.2023.2286609] [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] [Indexed: 12/01/2023]
Abstract
Circular RNA (CircRNA), as a classical noncoding RNA, has been proven to regulate skeletal muscle development (SMD). However, the molecular genetic basis of circRNA regulation in muscle cells remains unclear. In this study, the expression patterns of circRNAs in the longissimus dorsi muscle at embryonic day 75 and postnatal day 1 in DBGs were investigated to identify the key circRNAs that play an important role in SMD in goats. A total of 140 significantly and differentially expressed circRNAs (DEcircRNAs) were identified among the groups at different developmental stages. Among the 116 host genes (HGs) of DEcircRNAs, 76 were significantly and differentially expressed, which was confirmed by previous RNA_seq data. Furthermore, the expression pattern of 10 DEcircRNAs with RT-qPCR was verified, which showed 80% concordance rate with that of RNA_seq datasets. Moreover, the authenticity of seven randomly selected DEcircRNAs was verified by PCR Sanger sequencing. Based on the functional annotation results, among the 76 significantly and differentially expressed HGs, 74 were enriched in 845 GO terms, whereas 35 were annotated to 85 KEGG pathways. The results of this study could provide a comprehensive understanding of the genetic basis of circRNAs involved in SMD and muscle growth.
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Affiliation(s)
- Chengli Liu
- College of Animal Science and Technology, Chongqing Key Laboratory of Forage & Herbivore, Chongqing Engineering Research Centre for Herbivores Resource Protection and Utilization, Southwest University, Chongqing, China
| | - Pu Yang
- College of Animal Science and Technology, Chongqing Key Laboratory of Forage & Herbivore, Chongqing Engineering Research Centre for Herbivores Resource Protection and Utilization, Southwest University, Chongqing, China
| | - Xiao Wang
- College of Animal Science and Technology, Chongqing Key Laboratory of Forage & Herbivore, Chongqing Engineering Research Centre for Herbivores Resource Protection and Utilization, Southwest University, Chongqing, China
| | - Baiju Xiang
- Chongqing Academy of Animal Sciences, Chongqing, China
| | - Guangxin E
- College of Animal Science and Technology, Chongqing Key Laboratory of Forage & Herbivore, Chongqing Engineering Research Centre for Herbivores Resource Protection and Utilization, Southwest University, Chongqing, China
| | - Yongfu Huang
- College of Animal Science and Technology, Chongqing Key Laboratory of Forage & Herbivore, Chongqing Engineering Research Centre for Herbivores Resource Protection and Utilization, Southwest University, Chongqing, China
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2
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Colon T, Kou Z, Choi BH, Tran F, Dai W. Enzyme-independent role of EZH2 in regulating cell cycle progression via the SKP2-KIP/CIP pathway. Sci Rep 2024; 14:13389. [PMID: 38862595 PMCID: PMC11166936 DOI: 10.1038/s41598-024-64338-4] [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: 09/19/2023] [Accepted: 06/07/2024] [Indexed: 06/13/2024] Open
Abstract
While EZH2 enzymatic activity is well-known, emerging evidence suggests that EZH2 can exert functions in a methyltransferase-independent manner. In this study, we have uncovered a novel mechanism by which EZH2 positively regulates the expression of SKP2, a critical protein involved in cell cycle progression. We demonstrate that depletion of EZH2 significantly reduces SKP2 protein levels in several cell types, while treatment with EPZ-6438, an EZH2 enzymatic inhibitor, has no effect on SKP2 protein levels. Consistently, EZH2 depletion leads to cell cycle arrest, accompanied by elevated expression of CIP/KIP family proteins, including p21, p27, and p57, whereas EPZ-6438 treatment does not modulate their levels. We also provide evidence that EZH2 knockdown, but not enzymatic inhibition, suppresses SKP2 mRNA expression, underscoring the transcriptional regulation of SKP2 by EZH2 in a methyltransferase-independent manner. Supporting this, analysis of the Cancer Genome Atlas database reveals a close association between EZH2 and SKP2 expression in human malignancies. Moreover, EZH2 depletion but not enzymatic inhibition positively regulates the expression of major epithelial-mesenchymal transition (EMT) regulators, such as ZEB1 and SNAIL1, in transformed cells. Our findings shed light on a novel mechanism by which EZH2 exerts regulatory effects on cell proliferation and differentiation through its methyltransferase-independent function, specifically by modulating SKP2 expression.
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Affiliation(s)
- Tania Colon
- Division of Environmental Medicine, Department of Medicine Grossman School of Medicine, New York University, 341 East 25th Street, New York, NY, 10010, USA
| | - Ziyue Kou
- Division of Environmental Medicine, Department of Medicine Grossman School of Medicine, New York University, 341 East 25th Street, New York, NY, 10010, USA
| | - Byeong Hyeok Choi
- Division of Environmental Medicine, Department of Medicine Grossman School of Medicine, New York University, 341 East 25th Street, New York, NY, 10010, USA
| | - Franklin Tran
- Division of Environmental Medicine, Department of Medicine Grossman School of Medicine, New York University, 341 East 25th Street, New York, NY, 10010, USA
| | - Wei Dai
- Division of Environmental Medicine, Department of Medicine Grossman School of Medicine, New York University, 341 East 25th Street, New York, NY, 10010, USA.
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3
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Wen Y, Hu P, Fang Y, Tan Y, Wang Y, Wu H, Wang J, Wu K, Chai B, Zhu L, Zhang G, Gao Z, Ren D, Zeng D, Shen L, Dong G, Zhang Q, Li Q, Xiong G, Xue D, Qian Q, Hu J. GW9 determines grain size and floral organ identity in rice. PLANT BIOTECHNOLOGY JOURNAL 2024; 22:915-928. [PMID: 37983630 PMCID: PMC10955487 DOI: 10.1111/pbi.14234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 09/22/2023] [Accepted: 11/04/2023] [Indexed: 11/22/2023]
Abstract
Grain weight is an important determinant of grain yield. However, the underlying regulatory mechanisms for grain size remain to be fully elucidated. Here, we identify a rice mutant grain weight 9 (gw9), which exhibits larger and heavier grains due to excessive cell proliferation and expansion in spikelet hull. GW9 encodes a nucleus-localized protein containing both C2H2 zinc finger (C2H2-ZnF) and VRN2-EMF2-FIS2-SUZ12 (VEFS) domains, serving as a negative regulator of grain size and weight. Interestingly, the non-frameshift mutations in C2H2-ZnF domain result in increased plant height and larger grain size, whereas frameshift mutations in both C2H2-ZnF and VEFS domains lead to dwarf and malformed spikelet. These observations indicated the dual functions of GW9 in regulating grain size and floral organ identity through the C2H2-ZnF and VEFS domains, respectively. Further investigation revealed the interaction between GW9 and the E3 ubiquitin ligase protein GW2, with GW9 being the target of ubiquitination by GW2. Genetic analyses suggest that GW9 and GW2 function in a coordinated pathway controlling grain size and weight. Our findings provide a novel insight into the functional role of GW9 in the regulation of grain size and weight, offering potential molecular strategies for improving rice yield.
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Affiliation(s)
- Yi Wen
- State Key Laboratory of Rice Biology and BreedingChina National Rice Research InstituteHangzhouChina
| | - Peng Hu
- State Key Laboratory of Rice Biology and BreedingChina National Rice Research InstituteHangzhouChina
| | - Yunxia Fang
- College of Life and Environmental SciencesHangzhou Normal UniversityHangzhouChina
| | - Yiqing Tan
- State Key Laboratory of Rice Biology and BreedingChina National Rice Research InstituteHangzhouChina
- Plant Phenomics Research CenterNanjing Agricultural UniversityNanjingChina
| | - Yueying Wang
- State Key Laboratory of Rice Biology and BreedingChina National Rice Research InstituteHangzhouChina
| | - Hao Wu
- State Key Laboratory of Rice Biology and BreedingChina National Rice Research InstituteHangzhouChina
| | - Junge Wang
- State Key Laboratory of Rice Biology and BreedingChina National Rice Research InstituteHangzhouChina
| | - Kaixiong Wu
- State Key Laboratory of Rice Biology and BreedingChina National Rice Research InstituteHangzhouChina
| | - Bingze Chai
- State Key Laboratory of Rice Biology and BreedingChina National Rice Research InstituteHangzhouChina
| | - Li Zhu
- State Key Laboratory of Rice Biology and BreedingChina National Rice Research InstituteHangzhouChina
| | - Guangheng Zhang
- State Key Laboratory of Rice Biology and BreedingChina National Rice Research InstituteHangzhouChina
| | - Zhenyu Gao
- State Key Laboratory of Rice Biology and BreedingChina National Rice Research InstituteHangzhouChina
| | - Deyong Ren
- State Key Laboratory of Rice Biology and BreedingChina National Rice Research InstituteHangzhouChina
| | - Dali Zeng
- State Key Laboratory of Rice Biology and BreedingChina National Rice Research InstituteHangzhouChina
| | - Lan Shen
- State Key Laboratory of Rice Biology and BreedingChina National Rice Research InstituteHangzhouChina
| | - Guojun Dong
- State Key Laboratory of Rice Biology and BreedingChina National Rice Research InstituteHangzhouChina
| | - Qiang Zhang
- State Key Laboratory of Rice Biology and BreedingChina National Rice Research InstituteHangzhouChina
| | - Qing Li
- State Key Laboratory of Rice Biology and BreedingChina National Rice Research InstituteHangzhouChina
| | - Guosheng Xiong
- Plant Phenomics Research CenterNanjing Agricultural UniversityNanjingChina
| | - Dawei Xue
- College of Life and Environmental SciencesHangzhou Normal UniversityHangzhouChina
| | - Qian Qian
- State Key Laboratory of Rice Biology and BreedingChina National Rice Research InstituteHangzhouChina
| | - Jiang Hu
- State Key Laboratory of Rice Biology and BreedingChina National Rice Research InstituteHangzhouChina
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4
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Longhurst AD, Wang K, Suresh HG, Ketavarapu M, Ward HN, Jones IR, Narayan V, Hundley FV, Hassan AZ, Boone C, Myers CL, Shen Y, Ramani V, Andrews BJ, Toczyski DP. The PRC2.1 Subcomplex Opposes G1 Progression through Regulation of CCND1 and CCND2. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.18.585604. [PMID: 38562687 PMCID: PMC10983909 DOI: 10.1101/2024.03.18.585604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Progression through the G1 phase of the cell cycle is the most highly regulated step in cellular division. We employed a chemogenomics approach to discover novel cellular networks that regulate cell cycle progression. This approach uncovered functional clusters of genes that altered sensitivity of cells to inhibitors of the G1/S transition. Mutation of components of the Polycomb Repressor Complex 2 rescued growth inhibition caused by the CDK4/6 inhibitor palbociclib, but not to inhibitors of S phase or mitosis. In addition to its core catalytic subunits, mutation of the PRC2.1 accessory protein MTF2, but not the PRC2.2 protein JARID2, rendered cells resistant to palbociclib treatment. We found that PRC2.1 (MTF2), but not PRC2.2 (JARID2), was critical for promoting H3K27me3 deposition at CpG islands genome-wide and in promoters. This included the CpG islands in the promoter of the CDK4/6 cyclins CCND1 and CCND2, and loss of MTF2 lead to upregulation of both CCND1 and CCND2. Our results demonstrate a role for PRC2.1, but not PRC2.2, in promoting G1 progression.
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Affiliation(s)
- Adam D Longhurst
- University of California, San Francisco, San Francisco, CA 94158, USA
- Tetrad Graduate Program, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Kyle Wang
- Department of Molecular Genetics, University of Toronto, 160 College Street, Toronto, Ontario M5S 3E1, Canada
- The Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, ON, Canada
| | - Harsha Garadi Suresh
- Department of Molecular Genetics, University of Toronto, 160 College Street, Toronto, Ontario M5S 3E1, Canada
| | - Mythili Ketavarapu
- Gladstone Institute for Data Science and Biotechnology, J. David Gladstone Institutes, San Francisco, CA, USA
- Department of Biochemistry and Biophysics, University of California San Francisco, San Francisco, CA, USA
| | - Henry N Ward
- Bioinformatics and Computational Biology Graduate Program, University of Minnesota - Twin Cities Minneapolis MN USA
| | - Ian R Jones
- Institute for Human Genetics, University of California, San Francisco, San Francisco, CA, USA
- Pharmaceutical Sciences and Pharmacogenomics Graduate Program, University of California
| | - Vivek Narayan
- Institute for Human Genetics, University of California, San Francisco, San Francisco, CA, USA
| | - Frances V Hundley
- University of California, San Francisco, San Francisco, CA 94158, USA
- Tetrad Graduate Program, University of California, San Francisco, San Francisco, CA 94158, USA
- Department of Cell Biology, Blavatnik Institute of Harvard Medical School, Boston, MA 02115, USA
| | - Arshia Zernab Hassan
- Department of Computer Science and Engineering, University of Minnesota - Twin Cities Minneapolis MN USA
| | - Charles Boone
- Department of Molecular Genetics, University of Toronto, 160 College Street, Toronto, Ontario M5S 3E1, Canada
- The Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, ON, Canada
| | - Chad L Myers
- Bioinformatics and Computational Biology Graduate Program, University of Minnesota - Twin Cities Minneapolis MN USA
- Department of Cell Biology, Blavatnik Institute of Harvard Medical School, Boston, MA 02115, USA
| | - Yin Shen
- Institute for Human Genetics, University of California, San Francisco, San Francisco, CA, USA
- Department of Neurology, University of California, San Francisco, San Francisco, CA, USA
- Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA
| | - Vijay Ramani
- Gladstone Institute for Data Science and Biotechnology, J. David Gladstone Institutes, San Francisco, CA, USA
- Department of Biochemistry and Biophysics, University of California San Francisco, San Francisco, CA, USA
| | - Brenda J Andrews
- The Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, ON, Canada
| | - David P Toczyski
- University of California, San Francisco, San Francisco, CA 94158, USA
- Department of Biochemistry and Biophysics, University of California San Francisco, San Francisco, CA, USA
- Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA
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5
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Jonkhout MCM, Vanhessche T, Ferreira M, Verbinnen I, Withof F, Van der Hoeven G, Szekér K, Azhir Z, Lien WH, Van Eynde A, Bollen M. Embryonic NIPP1 Depletion in Keratinocytes Triggers a Cell Cycle Arrest and Premature Senescence in Adult Mice. J Invest Dermatol 2024:S0022-202X(24)00167-2. [PMID: 38431220 DOI: 10.1016/j.jid.2024.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 01/24/2024] [Accepted: 02/09/2024] [Indexed: 03/05/2024]
Abstract
NIPP1 is a ubiquitously expressed regulatory subunit of PP1. Its embryonic deletion in keratinocytes causes chronic sterile skin inflammation, epidermal hyperproliferation, and resistance to mutagens in adult mice. To explore the primary effects of NIPP1 deletion, we first examined hair cycle progression of NIPP1 skin knockouts (SKOs). The entry of the first hair cycle in the SKOs was delayed owing to prolonged quiescence of hair follicle stem cells. In contrast, the entry of the second hair cycle in the SKOs was advanced as a result of precocious activation of hair follicle stem cells. The epidermis of SKOs progressively accumulated senescent cells, and this cell-fate switch was accelerated by DNA damage. Primary keratinocytes from SKO neonates and human NIPP1-depleted HaCaT keratinocytes failed to proliferate and showed an increase in the expression of cell cycle inhibitors (p21, p16/Ink4a, and/or p19/Arf) and senescence-associated-secretory-phenotype factors as well as in DNA damage (γH2AX and 53BP1). Our data demonstrate that the primary effect of NIPP1 deletion in keratinocytes is a cell cycle arrest and premature senescence that gradually progresse to chronic senescence and likely contribute to the decreased sensitivity of SKOs to mutagens.
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Affiliation(s)
- Marloes C M Jonkhout
- Laboratory of Biosignaling & Therapeutics, Department of Cellular and Molecular Medicine, University of Leuven, Leuven, Belgium
| | - Tijs Vanhessche
- Laboratory of Biosignaling & Therapeutics, Department of Cellular and Molecular Medicine, University of Leuven, Leuven, Belgium
| | - Mónica Ferreira
- Laboratory of Biosignaling & Therapeutics, Department of Cellular and Molecular Medicine, University of Leuven, Leuven, Belgium
| | - Iris Verbinnen
- Laboratory of Biosignaling & Therapeutics, Department of Cellular and Molecular Medicine, University of Leuven, Leuven, Belgium
| | - Fabienne Withof
- Laboratory of Biosignaling & Therapeutics, Department of Cellular and Molecular Medicine, University of Leuven, Leuven, Belgium
| | - Gerd Van der Hoeven
- Laboratory of Biosignaling & Therapeutics, Department of Cellular and Molecular Medicine, University of Leuven, Leuven, Belgium
| | - Kathelijne Szekér
- Laboratory of Biosignaling & Therapeutics, Department of Cellular and Molecular Medicine, University of Leuven, Leuven, Belgium
| | - Zahra Azhir
- Laboratory of Biosignaling & Therapeutics, Department of Cellular and Molecular Medicine, University of Leuven, Leuven, Belgium
| | - Wen-Hui Lien
- de Duve Institute, Faculty of Medicine, Université catholique de Louvain, Brussels, Belgium
| | - Aleyde Van Eynde
- Laboratory of Biosignaling & Therapeutics, Department of Cellular and Molecular Medicine, University of Leuven, Leuven, Belgium.
| | - Mathieu Bollen
- Laboratory of Biosignaling & Therapeutics, Department of Cellular and Molecular Medicine, University of Leuven, Leuven, Belgium
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Su R, Cao W, Ma G, Li W, Li Z, Liu Y, Chen L, Chen Z, Li X, Cui P, Huang G. Cyclohexene oxide CA, a derivative of zeylenone, exhibits anti-cancer activity in glioblastoma by inducing G0/G1 phase arrest through interference with EZH2. Front Pharmacol 2024; 14:1326245. [PMID: 38264522 PMCID: PMC10803536 DOI: 10.3389/fphar.2023.1326245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 12/19/2023] [Indexed: 01/25/2024] Open
Abstract
Introduction: Due to its highly aggressiveness and malignancy, glioblastoma (GBM) urgently requires a safe and effective treatment strategy. Zeylenone, a natural polyoxygenated cyclohexenes compound isolated from Uvaria grandiflora, has exhibited potential biological activities in various human diseases, including tumors. Methods: We designed and synthesized a series of (+)-Zeylenone analogues and evaluated their anti-GBM roles through structural-activity analysis. Cell Counting Kit-8, TUNEL, transwell and flow cytometry were employed for investigating the anticancer effects of CA on GBM cells. Western blotting, molecular docking, qRT-PCR and ChIP assays were performed to reveal the underlying mechanisms by which CA regulates the GBM cell cycle. The nude mouse xenograft model, HE staining, immunohistochemistry and was used to evaluate the anticancer effect of CA in vivo. Results: We identified CA ((1R, 2R, 3S)-3-p-fluorobenzoyl-zeylenone) as having the lowest IC50 value in GBM cells. CA treatment significantly inhibited the malignant behaviors of GBM cells and induced G0/G1 phase arrest in vitro. Furthermore, we validated the molecular mechanism by which CA interferes with EZH2, attenuating the down-regulation of cyclin-dependent kinase inhibitors p27 and p16 by the PRC2 complex. By establishing orthotopic nude mice models, we further validated the inhibitory role of CA on tumorigenesis of GBM cells in vivo and its potential values to synergistically potentiate the anti-tumor effects of EZH2 inhibitors. Conclusion: Overall, this paper elucidated the anti-GBM effects and potential mechanisms of CA, and may provide a therapeutic drug candidate for GBM treatment.
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Affiliation(s)
- Rui Su
- Department of Neurosurgery, Shenzhen Second People’s Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
| | - Weiwei Cao
- Institute of Pharmacy, Shenzhen University Medical School, Shenzhen, China
| | - Guoxu Ma
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Weiping Li
- Department of Neurosurgery, Shenzhen Second People’s Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
| | - Zongyang Li
- Department of Neurosurgery, Shenzhen Second People’s Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
| | - Yongpei Liu
- Department of Neurosurgery, Shenzhen Second People’s Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
| | - Lei Chen
- Department of Neurosurgery, Shenzhen Second People’s Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
| | - Zebin Chen
- Department of Pharmacy, Shenzhen Children’s Hospital, Shenzhen, China
| | - Xuejuan Li
- Department of Pharmacy, Shenzhen Children’s Hospital, Shenzhen, China
| | - Ping Cui
- Department of Pharmacy, Shenzhen Children’s Hospital, Shenzhen, China
| | - Guodong Huang
- Department of Neurosurgery, Shenzhen Second People’s Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
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From cyclins to CDKIs: Cell cycle regulation of skeletal muscle stem cell quiescence and activation. Exp Cell Res 2022; 420:113275. [PMID: 35931143 DOI: 10.1016/j.yexcr.2022.113275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 06/12/2022] [Accepted: 07/03/2022] [Indexed: 11/22/2022]
Abstract
After extensive proliferation during development, the adult skeletal muscle cells remain outside the cell cycle, either as post-mitotic myofibers or as quiescent muscle stem cells (MuSCs). Despite its terminally differentiated state, adult skeletal muscle has a remarkable regeneration potential, driven by MuSCs. Upon injury, MuSC quiescence is reversed to support tissue growth and repair and it is re-established after the completion of muscle regeneration. The distinct cell cycle states and transitions observed in the different myogenic populations are orchestrated by elements of the cell cycle machinery. This consists of i) complexes of cyclins and Cyclin-Dependent Kinases (CDKs) that ensure cell cycle progression and ii) their negative regulators, the Cyclin-Dependent Kinase Inhibitors (CDKIs). In this review we discuss the roles of these factors in developmental and adult myogenesis, with a focus on CDKIs that have emerging roles in stem cell functions.
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Simonini S, Bemer M, Bencivenga S, Gagliardini V, Pires ND, Desvoyes B, van der Graaff E, Gutierrez C, Grossniklaus U. The Polycomb group protein MEDEA controls cell proliferation and embryonic patterning in Arabidopsis. Dev Cell 2021; 56:1945-1960.e7. [PMID: 34192526 PMCID: PMC8279741 DOI: 10.1016/j.devcel.2021.06.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/22/2021] [Accepted: 06/07/2021] [Indexed: 12/13/2022]
Abstract
Establishing the embryonic body plan of multicellular organisms relies on precisely orchestrated cell divisions coupled with pattern formation, which, in animals, are regulated by Polycomb group (PcG) proteins. The conserved Polycomb Repressive Complex 2 (PRC2) mediates H3K27 trimethylation and comes in different flavors in Arabidopsis. The PRC2 catalytic subunit MEDEA is required for seed development; however, a role for PRC2 in embryonic patterning has been dismissed. Here, we demonstrate that embryos derived from medea eggs abort because MEDEA is required for patterning and cell lineage determination in the early embryo. Similar to PcG proteins in mammals, MEDEA regulates embryonic patterning and growth by controlling cell-cycle progression through repression of CYCD1;1, which encodes a core cell-cycle component. Thus, Arabidopsis embryogenesis is epigenetically regulated by PcG proteins, revealing that the PRC2-dependent modulation of cell-cycle progression was independently recruited to control embryonic cell proliferation and patterning in animals and plants. MEDEA, a Polycomb Repressive Complex 2 (PRC2) subunit, is required in embryo and endosperm MEDEA links cell proliferation and differentiation during embryonic pattern formation The PRC2 protein MEDEA directly regulates core cell-cycle components, i.e., cyclin CYCD1;1 Body plan and cell proliferation are epigenetically regulated in both animals and plants
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Affiliation(s)
- Sara Simonini
- Department of Plant and Microbial Biology & Zurich-Basel Plant Science Center, University of Zurich, Zollikerstrasse 107, 8008 Zurich, Switzerland
| | - Marian Bemer
- Department of Plant and Microbial Biology & Zurich-Basel Plant Science Center, University of Zurich, Zollikerstrasse 107, 8008 Zurich, Switzerland
| | - Stefano Bencivenga
- Department of Plant and Microbial Biology & Zurich-Basel Plant Science Center, University of Zurich, Zollikerstrasse 107, 8008 Zurich, Switzerland
| | - Valeria Gagliardini
- Department of Plant and Microbial Biology & Zurich-Basel Plant Science Center, University of Zurich, Zollikerstrasse 107, 8008 Zurich, Switzerland
| | - Nuno D Pires
- Department of Plant and Microbial Biology & Zurich-Basel Plant Science Center, University of Zurich, Zollikerstrasse 107, 8008 Zurich, Switzerland
| | - Bénédicte Desvoyes
- Centro de Biología Molecular Severo Ochoa CSIC-UAM, Nicolás Cabrera 1, Cantoblanco 28049, Madrid, Spain
| | - Eric van der Graaff
- BIOSS Centre for Biological Signaling Studies, Faculty of Biology, Albert-Ludwigs-Universität Freiburg, Schänzlestrasse 1, 79104 Freiburg, Germany
| | - Crisanto Gutierrez
- Centro de Biología Molecular Severo Ochoa CSIC-UAM, Nicolás Cabrera 1, Cantoblanco 28049, Madrid, Spain
| | - Ueli Grossniklaus
- Department of Plant and Microbial Biology & Zurich-Basel Plant Science Center, University of Zurich, Zollikerstrasse 107, 8008 Zurich, Switzerland.
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9
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Rehman S, Aatif M, Rafi Z, Khan MY, Shahab U, Ahmad S, Farhan M. Effect of non-enzymatic glycosylation in the epigenetics of cancer. Semin Cancer Biol 2020; 83:543-555. [DOI: 10.1016/j.semcancer.2020.11.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 11/24/2020] [Accepted: 11/25/2020] [Indexed: 02/09/2023]
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