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Cheng Q, Xie H, Zhang X, Wang M, Bi C, Wang Q, Wang R, Fang M. An essential role for
PTIP
in mediating Hox gene regulation along
PcG
and
trxG
pathways. FEBS J 2022; 289:6324-6341. [DOI: 10.1111/febs.16541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/19/2022] [Accepted: 05/31/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Qian Cheng
- School of Life Science and Technology, MOE Key Laboratory of Developmental Genes and Human Diseases Southeast University Nanjing China
| | - Hao Xie
- School of Life Science and Technology, MOE Key Laboratory of Developmental Genes and Human Diseases Southeast University Nanjing China
| | - Xiao‐Yan Zhang
- Department of Genetic Medicine Johns Hopkins University School of Medicine Baltimore MD USA
| | - Ming‐Ying Wang
- School of Life Science and Technology, MOE Key Laboratory of Developmental Genes and Human Diseases Southeast University Nanjing China
| | - Cai‐Li Bi
- School of Life Science and Technology, MOE Key Laboratory of Developmental Genes and Human Diseases Southeast University Nanjing China
- Institute of Translational Medicine, Medical College Yangzhou University China
| | - Qiang Wang
- School of Life Science and Technology, MOE Key Laboratory of Developmental Genes and Human Diseases Southeast University Nanjing China
| | - Rui Wang
- School of Life Science and Technology, MOE Key Laboratory of Developmental Genes and Human Diseases Southeast University Nanjing China
| | - Ming Fang
- School of Life Science and Technology, MOE Key Laboratory of Developmental Genes and Human Diseases Southeast University Nanjing China
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2
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Bi CL, Cheng Q, Yan LY, Wu HY, Wang Q, Wang P, Cheng L, Wang R, Yang L, Li J, Tie F, Xie H, Fang M. A prominent gene activation role for C-terminal binding protein in mediating PcG/trxG proteins through Hox gene regulation. Development 2022; 149:275613. [DOI: 10.1242/dev.200153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 04/28/2022] [Indexed: 11/20/2022]
Abstract
ABSTRACT
The evolutionarily conserved C-terminal binding protein (CtBP) has been well characterized as a transcriptional co-repressor. Herein, we report a previously unreported function for CtBP, showing that lowering CtBP dosage genetically suppresses Polycomb group (PcG) loss-of-function phenotypes while enhancing that of trithorax group (trxG) in Drosophila, suggesting that the role of CtBP in gene activation is more pronounced in fly development than previously thought. In fly cells, we show that CtBP is required for the derepression of the most direct PcG target genes, which are highly enriched by homeobox transcription factors, including Hox genes. Using ChIP and co-IP assays, we demonstrate that CtBP is directly required for the molecular switch between H3K27me3 and H3K27ac in the derepressed Hox loci. In addition, CtBP physically interacts with many proteins, such as UTX, CBP, Fs(1)h and RNA Pol II, that have activation roles, potentially assisting in their recruitment to promoters and Polycomb response elements that control Hox gene expression. Therefore, we reveal a prominent activation function for CtBP that confers a major role for the epigenetic program of fly segmentation and development.
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Affiliation(s)
- Cai-Li Bi
- School of Life Science and Technology, MOE Key Laboratory of Developmental Genes and Human Diseases, Southeast University 1 , Nanjing 210096 , China
- Institute of Translational Medicine 2 , , , Yangzhou 225001 , China
- Medical College 2 , , , Yangzhou 225001 , China
- Yangzhou University 2 , , , Yangzhou 225001 , China
| | - Qian Cheng
- School of Life Science and Technology, MOE Key Laboratory of Developmental Genes and Human Diseases, Southeast University 1 , Nanjing 210096 , China
| | - Ling-Yue Yan
- School of Life Science and Technology, MOE Key Laboratory of Developmental Genes and Human Diseases, Southeast University 1 , Nanjing 210096 , China
| | - Hong-Yan Wu
- School of Life Science and Technology, MOE Key Laboratory of Developmental Genes and Human Diseases, Southeast University 1 , Nanjing 210096 , China
| | - Qiang Wang
- School of Life Science and Technology, MOE Key Laboratory of Developmental Genes and Human Diseases, Southeast University 1 , Nanjing 210096 , China
| | - Ping Wang
- School of Life Science and Technology, MOE Key Laboratory of Developmental Genes and Human Diseases, Southeast University 1 , Nanjing 210096 , China
| | - Lin Cheng
- School of Life Science and Technology, MOE Key Laboratory of Developmental Genes and Human Diseases, Southeast University 1 , Nanjing 210096 , China
| | - Rui Wang
- School of Life Science and Technology, MOE Key Laboratory of Developmental Genes and Human Diseases, Southeast University 1 , Nanjing 210096 , China
| | - Lin Yang
- School of Life Science and Technology, MOE Key Laboratory of Developmental Genes and Human Diseases, Southeast University 1 , Nanjing 210096 , China
| | - Jian Li
- School of Life Science and Technology, MOE Key Laboratory of Developmental Genes and Human Diseases, Southeast University 1 , Nanjing 210096 , China
| | - Feng Tie
- Case Western Reserve University 3 Department of Genetics and Genome Sciences , , Cleveland, OH 44106, USA
| | - Hao Xie
- School of Life Science and Technology, MOE Key Laboratory of Developmental Genes and Human Diseases, Southeast University 1 , Nanjing 210096 , China
| | - Ming Fang
- School of Life Science and Technology, MOE Key Laboratory of Developmental Genes and Human Diseases, Southeast University 1 , Nanjing 210096 , China
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3
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Juarez-Carreño S, Morante J, Dominguez M. Systemic signalling and local effectors in developmental stability, body symmetry, and size. Cell Stress 2018; 2:340-361. [PMID: 31225459 PMCID: PMC6551673 DOI: 10.15698/cst2018.12.167] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Symmetric growth and the origins of fluctuating asymmetry are unresolved phenomena of biology. Small, and sometimes noticeable, deviations from perfect bilateral symmetry reflect the vulnerability of development to perturbations. The degree of asymmetry is related to the magnitude of the perturbations and the ability of an individual to cope with them. As the left and right sides of an individual were presumed to be genetically identical, deviations of symmetry were traditionally attributed to non-genetic effects such as environmental and developmental noise. In this review, we draw attention to other possible sources of variability, especially to somatic mutations and transposons. Mutations are a major source of phenotypic variability and recent genomic data have highlighted somatic mutations as ubiquitous, even in phenotypically normal individuals. We discuss the importance of factors that are responsible for buffering and stabilizing the genome and for maintaining size robustness and quality through elimination of less-fit or damaged cells. However, the important question that arises from these studies is whether this self-correcting capacity and intrinsic organ size controls are sufficient to explain how symmetric structures can reach an identical size and shape. Indeed, recent discoveries in the fruit fly have uncovered a conserved hormone of the insulin/IGF/relaxin family, Dilp8, that is responsible for stabilizing body size and symmetry in the face of growth perturbations. Dilp8 alarm signals periphery growth status to the brain, where it acts on its receptor Lgr3. Loss of Dilp8-Lgr3 signaling renders flies incapable of detecting growth perturbations and thus maintaining a stable size and symmetry. These findings help to understand how size and symmetry of somatic tissues remain undeterred in noisy environments, after injury or illnesses, and in the presence of accumulated somatic mutations.
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Affiliation(s)
- Sergio Juarez-Carreño
- Instituto de Neurociencias, Consejo Superior de Investigaciones Científicas-Universidad Miguel Hernández (CSIC-UMH), Avda Santiago Ramón y Cajal s/n, Campus de Sant Joan, Alicante, Spain
| | - Javier Morante
- Instituto de Neurociencias, Consejo Superior de Investigaciones Científicas-Universidad Miguel Hernández (CSIC-UMH), Avda Santiago Ramón y Cajal s/n, Campus de Sant Joan, Alicante, Spain
| | - Maria Dominguez
- Instituto de Neurociencias, Consejo Superior de Investigaciones Científicas-Universidad Miguel Hernández (CSIC-UMH), Avda Santiago Ramón y Cajal s/n, Campus de Sant Joan, Alicante, Spain
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4
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Dardalhon-Cuménal D, Deraze J, Dupont CA, Ribeiro V, Coléno-Costes A, Pouch J, Le Crom S, Thomassin H, Debat V, Randsholt NB, Peronnet F. Cyclin G and the Polycomb Repressive complexes PRC1 and PR-DUB cooperate for developmental stability. PLoS Genet 2018; 14:e1007498. [PMID: 29995890 PMCID: PMC6065198 DOI: 10.1371/journal.pgen.1007498] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 07/27/2018] [Accepted: 06/19/2018] [Indexed: 12/16/2022] Open
Abstract
In Drosophila, ubiquitous expression of a short Cyclin G isoform generates extreme developmental noise estimated by fluctuating asymmetry (FA), providing a model to tackle developmental stability. This transcriptional cyclin interacts with chromatin regulators of the Enhancer of Trithorax and Polycomb (ETP) and Polycomb families. This led us to investigate the importance of these interactions in developmental stability. Deregulation of Cyclin G highlights an organ intrinsic control of developmental noise, linked to the ETP-interacting domain, and enhanced by mutations in genes encoding members of the Polycomb Repressive complexes PRC1 and PR-DUB. Deep-sequencing of wing imaginal discs deregulating CycG reveals that high developmental noise correlates with up-regulation of genes involved in translation and down-regulation of genes involved in energy production. Most Cyclin G direct transcriptional targets are also direct targets of PRC1 and RNAPolII in the developing wing. Altogether, our results suggest that Cyclin G, PRC1 and PR-DUB cooperate for developmental stability.
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Affiliation(s)
- Delphine Dardalhon-Cuménal
- Sorbonne Université, Centre National de la Recherche Scientifique (CNRS),
Institut de Biologie Paris-Seine (IBPS), Laboratory of Developmental Biology
(LBD), Paris, France
| | - Jérôme Deraze
- Sorbonne Université, Centre National de la Recherche Scientifique (CNRS),
Institut de Biologie Paris-Seine (IBPS), Laboratory of Developmental Biology
(LBD), Paris, France
| | - Camille A. Dupont
- Sorbonne Université, Centre National de la Recherche Scientifique (CNRS),
Institut de Biologie Paris-Seine (IBPS), Laboratory of Developmental Biology
(LBD), Paris, France
| | - Valérie Ribeiro
- Sorbonne Université, Centre National de la Recherche Scientifique (CNRS),
Institut de Biologie Paris-Seine (IBPS), Laboratory of Developmental Biology
(LBD), Paris, France
| | - Anne Coléno-Costes
- Sorbonne Université, Centre National de la Recherche Scientifique (CNRS),
Institut de Biologie Paris-Seine (IBPS), Laboratory of Developmental Biology
(LBD), Paris, France
| | - Juliette Pouch
- Institut de biologie de l’Ecole normale supérieure (IBENS), Ecole normale
supérieure, CNRS, INSERM, PSL Université Paris Paris, France
| | - Stéphane Le Crom
- Institut de biologie de l’Ecole normale supérieure (IBENS), Ecole normale
supérieure, CNRS, INSERM, PSL Université Paris Paris, France
- Sorbonne Université, Univ Antilles, Univ Nice Sophia Antipolis, CNRS,
Evolution Paris Seine—Institut de Biologie Paris Seine (EPS - IBPS), Paris,
France
| | - Hélène Thomassin
- Sorbonne Université, Centre National de la Recherche Scientifique (CNRS),
Institut de Biologie Paris-Seine (IBPS), Laboratory of Developmental Biology
(LBD), Paris, France
| | - Vincent Debat
- Institut de Systematique, Evolution, Biodiversité ISYEB UMR 7205, MNHN,
CNRS, Sorbonne Université, EPHE, Muséum national d'Histoire naturelle, Sorbonne
Universités, Paris, France
| | - Neel B. Randsholt
- Sorbonne Université, Centre National de la Recherche Scientifique (CNRS),
Institut de Biologie Paris-Seine (IBPS), Laboratory of Developmental Biology
(LBD), Paris, France
| | - Frédérique Peronnet
- Sorbonne Université, Centre National de la Recherche Scientifique (CNRS),
Institut de Biologie Paris-Seine (IBPS), Laboratory of Developmental Biology
(LBD), Paris, France
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