1
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Balachandra V, Shrestha RL, Hammond CM, Lin S, Hendriks IA, Sethi SC, Chen L, Sevilla S, Caplen NJ, Chari R, Karpova TS, McKinnon K, Todd MA, Koparde V, Cheng KCC, Nielsen ML, Groth A, Basrai MA. DNAJC9 prevents CENP-A mislocalization and chromosomal instability by maintaining the fidelity of histone supply chains. EMBO J 2024; 43:2166-2197. [PMID: 38600242 PMCID: PMC11148058 DOI: 10.1038/s44318-024-00093-6] [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: 09/28/2023] [Revised: 03/20/2024] [Accepted: 03/25/2024] [Indexed: 04/12/2024] Open
Abstract
The centromeric histone H3 variant CENP-A is overexpressed in many cancers. The mislocalization of CENP-A to noncentromeric regions contributes to chromosomal instability (CIN), a hallmark of cancer. However, pathways that promote or prevent CENP-A mislocalization remain poorly defined. Here, we performed a genome-wide RNAi screen for regulators of CENP-A localization which identified DNAJC9, a J-domain protein implicated in histone H3-H4 protein folding, as a factor restricting CENP-A mislocalization. Cells lacking DNAJC9 exhibit mislocalization of CENP-A throughout the genome, and CIN phenotypes. Global interactome analysis showed that DNAJC9 depletion promotes the interaction of CENP-A with the DNA-replication-associated histone chaperone MCM2. CENP-A mislocalization upon DNAJC9 depletion was dependent on MCM2, defining MCM2 as a driver of CENP-A deposition at ectopic sites when H3-H4 supply chains are disrupted. Cells depleted for histone H3.3, also exhibit CENP-A mislocalization. In summary, we have defined novel factors that prevent mislocalization of CENP-A, and demonstrated that the integrity of H3-H4 supply chains regulated by histone chaperones such as DNAJC9 restrict CENP-A mislocalization and CIN.
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Grants
- 75N91019D00024 NCI NIH HHS
- HHSN261201500003I NCI NIH HHS
- ZIA BC 010822 HHS | NIH | NCI | Center for Cancer Research (CCR)
- ZIA BC 011704 HHS | NIH | NCI | Center for Cancer Research (CCR)
- 75N91019D00024 NCI NIH HHS
- HHSN261201500003I NCI NIH HHS
- 0135-00096B and 8020-00220B,EPIC-XS-823839,R146-A9159-16-S2 Independent Research Fund Denmark, European Union's Horizon 2020 research and innovation program, Danish Cancer Society
- ERC CoG 724436,R198-2015-269 and R313-2019-448,7016-00042B,NNF21OC0067425,NNF14CC0001 European Research Council, Lund-beck Foundation, Independent Research Fund Denmark, Novo Nordisk Foundation
- HHS | NIH | National Cancer Institute (NCI)
- Independent Research Fund Denmark, European Union’s Horizon 2020 research and innovation program, Danish Cancer Society
- NIH Intramural Research Program, Intramural Research Program of the National Center for Advancing Translational Sciences (NCATS)
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Affiliation(s)
- Vinutha Balachandra
- Yeast Genome Stability Section, Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Roshan L Shrestha
- Yeast Genome Stability Section, Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Colin M Hammond
- Novo Nordisk Foundation Center for Protein Research (CPR), Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
- Biotech Research and Innovation Centre (BRIC), Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
- Department of Molecular and Clinical Cancer Medicine, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK.
| | - Shinjen Lin
- Functional Genomics Laboratory, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD, USA
| | - Ivo A Hendriks
- Novo Nordisk Foundation Center for Protein Research (CPR), Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Subhash Chandra Sethi
- Yeast Genome Stability Section, Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Lu Chen
- Functional Genomics Laboratory, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD, USA
| | - Samantha Sevilla
- Collaborative Bioinformatics Resource, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
- Advanced Biomedical Computational Science, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Natasha J Caplen
- Functional Genetics Section, Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Raj Chari
- Genome Modification Core (GMC), Frederick National Lab for Cancer Research, Frederick, MD, USA
| | - Tatiana S Karpova
- Optical Microscopy Core, Laboratory of Receptor Biology and Gene Expression, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Katherine McKinnon
- Flow Cytometry Core, Vaccine Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Matthew Am Todd
- Novo Nordisk Foundation Center for Protein Research (CPR), Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Biotech Research and Innovation Centre (BRIC), Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Vishal Koparde
- Collaborative Bioinformatics Resource, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
- Advanced Biomedical Computational Science, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Ken Chih-Chien Cheng
- Functional Genomics Laboratory, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD, USA
| | - Michael L Nielsen
- Novo Nordisk Foundation Center for Protein Research (CPR), Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Anja Groth
- Novo Nordisk Foundation Center for Protein Research (CPR), Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Biotech Research and Innovation Centre (BRIC), Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Munira A Basrai
- Yeast Genome Stability Section, Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
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2
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Lim KK, Lam UTF, Li Y, Zeng YB, Yang H, Chen ES. Set2 regulates Ccp1 and Swc2 to ensure centromeric stability by retargeting CENP-A. Nucleic Acids Res 2024; 52:4198-4214. [PMID: 38442274 PMCID: PMC11077061 DOI: 10.1093/nar/gkae084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 01/24/2024] [Accepted: 01/29/2024] [Indexed: 03/07/2024] Open
Abstract
Precise positioning of the histone-H3 variant, CENP-A, ensures centromere stability and faithful chromosomal segregation. Mislocalization of CENP-A to extra-centromeric loci results in aneuploidy and compromised cell viability associated with formation of ectopic kinetochores. The mechanism that retargets mislocalized CENP-A back to the centromere is unclarified. We show here that the downregulation of the histone H3 lysine 36 (H3K36) methyltransferase Set2 can preserve centromere localization of a temperature-sensitive mutant cnp1-1 Schizosaccharomyces pombe CENP-A (SpCENP-A) protein and reverse aneuploidy by redirecting mislocalized SpCENP-A back to centromere from ribosomal DNA (rDNA) loci, which serves as a sink for the delocalized SpCENP-A. Downregulation of set2 augments Swc2 (SWR1 complex DNA-binding module) expression and releases histone chaperone Ccp1 from the centromeric reservoir. Swc2 and Ccp1 are directed to the rDNA locus to excavate the SpCENP-Acnp1-1, which is relocalized to the centromere in a manner dependent on canonical SpCENP-A loaders, including Mis16, Mis17 and Mis18, thereby conferring cell survival and safeguarding chromosome segregation fidelity. Chromosome missegregation is a severe genetic instability event that compromises cell viability. This mechanism thus promotes CENP-A presence at the centromere to maintain genomic stability.
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Affiliation(s)
- Kim Kiat Lim
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Ulysses Tsz Fung Lam
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Ying Li
- NUS Center for Cancer Research, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Cancer Science Institute, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Yi Bing Zeng
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Henry Yang
- NUS Center for Cancer Research, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Cancer Science Institute, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- National University Health System, Singapore
| | - Ee Sin Chen
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- NUS Center for Cancer Research, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- National University Health System, Singapore
- Integrative Sciences & Engineering Programme, National University of Singapore, Singapore
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3
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Li S, Zhang Z, Li Z, Yang L, Liu J, Liu Y, Liu Y, Hou Y, Mei M, Huang Y. CENPA promotes glutamine metabolism and tumor progression by up-regulating SLC38A1 in endometrial cancer. Cell Signal 2024; 117:111110. [PMID: 38382691 DOI: 10.1016/j.cellsig.2024.111110] [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: 12/01/2023] [Revised: 01/28/2024] [Accepted: 02/18/2024] [Indexed: 02/23/2024]
Abstract
Glutamine addiction is a significant hallmark of metabolic reprogramming in tumors and is crucial to the progression of cancer. Nevertheless, the regulatory mechanisms of glutamine metabolism in endometrial cancer (EC) remains elusive. In this research, we found that elevated expression of CENPA and solute carrier family 38 member 1 (SLC38A1) were firmly associated with worse clinical stage and unfavorable outcomes in EC patients. In addition, ectopic overexpression or silencing of CENPA could either enhance or diminish glutamine metabolism and tumor progression in EC. Mechanistically, CENPA directly regulated the transcriptional activity of the target gene, SLC38A1, leading to enhanced glutamine uptake and metabolism, thereby promoting EC progression. Notably, a prognostic model utilizing the expression levels of CENPA and SLC38A1 genes independently emerged as a prognostic factor for EC. More importantly, CENPA and SLC38A1 were significantly elevated and positively correlated, as well as indicative of poor prognosis in multiple cancers. In brief, our study confirmed that CENPA is a critical transcription factor involved in glutamine metabolism and tumor progression through modulating SLC38A1. This revelation suggests that targeting CENPA could be an appealing therapeutic approach to address pan-cancer glutamine addiction.
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Affiliation(s)
- Shuang Li
- Department of Gynecology and Obstetrics, Xiangyang No. 1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei Province, China
| | - Zihui Zhang
- Department of Gynecology and Obstetrics, Xiangyang No. 1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei Province, China
| | - Zhifang Li
- Department of Gynecology and Obstetrics, Xiangyang No. 1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei Province, China
| | - Lian Yang
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Jianfeng Liu
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Yujie Liu
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Yancai Liu
- Department of Gynecology and Obstetrics, Xiangyang No. 1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei Province, China
| | - Yanmei Hou
- Department of Gynecology and Obstetrics, Xiangyang No. 1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei Province, China
| | - Mei Mei
- Department of Gynecology and Obstetrics, Xiangyang No. 1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei Province, China.
| | - Yuqin Huang
- Department of Gynecology and Obstetrics, Xiangyang No. 1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei Province, China.
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4
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Ohkuni K, Au WC, Kazi A, Villamil M, Kaiser P, Basrai M. Interaction of histone H4 with Cse4 facilitates conformational changes in Cse4 for its sumoylation and mislocalization. Nucleic Acids Res 2024; 52:643-659. [PMID: 38038247 PMCID: PMC10810195 DOI: 10.1093/nar/gkad1133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 10/27/2023] [Accepted: 11/09/2023] [Indexed: 12/02/2023] Open
Abstract
Mislocalization of overexpressed CENP-A (Cse4 in budding yeast, Cnp1 in fission yeast, CID in flies) contributes to chromosomal instability (CIN) in yeasts, flies, and human cells. Mislocalization of CENP-A is observed in many cancers and this correlates with poor prognosis. Structural mechanisms that contribute to mislocalization of CENP-A are poorly defined. Here, we show that interaction of histone H4 with Cse4 facilitates an in vivo conformational change in Cse4 promoting its mislocalization in budding yeast. We determined that Cse4 Y193A mutant exhibits reduced sumoylation, mislocalization, interaction with histone H4, and lethality in psh1Δ and cdc48-3 strains; all these phenotypes are suppressed by increased gene dosage of histone H4. We developed a new in vivo approach, antibody accessibility (AA) assay, to examine the conformation of Cse4. AA assay showed that wild-type Cse4 with histone H4 is in an 'open' state, while Cse4 Y193A predominantly exhibits a 'closed' state. Increased gene dosage of histone H4 contributes to a shift of Cse4 Y193A to an 'open' state with enhanced sumoylation and mislocalization. We provide molecular insights into how Cse4-H4 interaction changes the conformational state of Cse4 in vivo. These studies advance our understanding for mechanisms that promote mislocalization of CENP-A in human cancers.
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Affiliation(s)
- Kentaro Ohkuni
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Wei-Chun Au
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Amira Z Kazi
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Mark Villamil
- Department of Biological Chemistry, School of Medicine, Center for Epigenetics and Metabolism, Chao Family Comprehensive Cancer Center, University of California, Irvine, CA 92697-1700, USA
| | - Peter Kaiser
- Department of Biological Chemistry, School of Medicine, Center for Epigenetics and Metabolism, Chao Family Comprehensive Cancer Center, University of California, Irvine, CA 92697-1700, USA
| | - Munira A Basrai
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
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5
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Zhang GX, Ding XS, Wang YL. Prognostic model of hepatocellular carcinoma based on cancer grade. World J Clin Cases 2023; 11:6383-6397. [PMID: 37900243 PMCID: PMC10600993 DOI: 10.12998/wjcc.v11.i27.6383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 08/02/2023] [Accepted: 08/23/2023] [Indexed: 09/20/2023] Open
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) is the most common type of primary liver cancer. With highly invasive biological characteristics and a lack of obvious clinical manifestations, HCC usually has a poor prognosis and ranks fourth in cancer mortality. The aetiology and exact molecular mechanism of primary HCC are still unclear. AIM To select the characteristic genes that are significantly associated with the prognosis of HCC patients and construct a prognosis model of this malignancy. METHODS By comparing the gene expression levels of patients with different cancer grades of HCC, we screened out differentially expressed genes associated with tumour grade. By protein-protein interaction (PPI) network analysis, we obtained the top 2 PPI networks and hub genes from these differentially expressed genes. By using least absolute shrinkage and selection operator Cox regression, 13 prognostic genes were selected for feature extraction, and a prognostic risk model of HCC was established. RESULTS The model had significant prognostic ability in HCC. We also analysed the biological functions of these prognostic genes. CONCLUSION By comparing the gene profiles of patients with different stages of HCC, We have constructed a prognosis model consisting of 13 genes that have important prognostic value. This model has good application value and can be explained clinically.
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Affiliation(s)
- Guo-Xin Zhang
- Department of General Surgery, Aviation General Hospital, Beijing 100010, China
| | - Xiao-Sheng Ding
- Department of Oncology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, China
| | - You-Li Wang
- Department of General Surgery, Aviation General Hospital, Beijing 100010, China
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6
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Bhattacharyya N, Khan MM, Bagabir SA, Almalki AH, Shahwan MA, Haque S, Verma AK, Mangangcha IR. Maximal clique centrality and bottleneck genes as novel biomarkers in ovarian cancer. Biotechnol Genet Eng Rev 2023. [DOI: 10.1080/02648725.2023.2174688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Affiliation(s)
| | - Mohd Mabood Khan
- Division of Molecular Genetics & Biochemistry, National Institute of Cancer Prevention & Research (ICMR-NICPR), Noida, India
| | - Sali Abubaker Bagabir
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia
| | - Atiah H. Almalki
- Department of Pharmaceutical Chemistry, College of Pharmacy, Taif University, Taif, Saudi Arabia
- Addiction and Neuroscience Research Unit, College of Pharmacy, Taif University, Taif, Al-Hawiah, Saudi Arabia
| | - Moyad Al Shahwan
- Research and Scientific Studies Unit, College of Nursing and Allied Health Sciences, Jazan University, Jazan, Saudi Arabia
| | - Shafiul Haque
- Research and Scientific Studies Unit, College of Nursing and Allied Health Sciences, Jazan University, Jazan, Saudi Arabia
- Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Beirut, Lebanon
- Centre of Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman, United Arab Emirates
| | - Ajay Kumar Verma
- School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi, India
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7
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Li J, Li Q, Yuan Y, Xie Y, Zhang Y, Zhang R. High CENPA expression in papillary renal cell carcinoma tissues is associated with poor prognosis. BMC Urol 2022; 22:157. [PMID: 36163007 PMCID: PMC9511783 DOI: 10.1186/s12894-022-01106-4] [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: 03/10/2022] [Accepted: 09/19/2022] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE This work focused on investigating the relation of centromeric protein A (CENPA) gene expression with prognosis of papillary renal cell carcinoma (PRCC). METHODS We obtained data from PRCC cases in TCGA. Thereafter, CENPA levels between the paired PRCC and matched non-carcinoma samples were analyzed by Wilcoxon rank-sum test, while the relations of clinicopathological characteristics with CENPA level were examined by logistic regression and Wilcoxon rank-sum test. The prognostic value of CENPA was assessed by plotting the receiver operating feature curve (ROC) and calculating the value of area under curve (AUC). In addition, relations between clinicopathological characteristics and PRCC survival were analyzed through Kaplan-Meier (KM) and Cox regression analyses. After dividing the total number of patients into the trial cohort and the validation cohort in a ratio of 7:3, we constructed a nomogram in trial cohort according to multivariate Cox regression results for predicting how CENPA affected patient survival and used the calibration curve to verify its accuracy in both cohorts. We also determined CENPA levels within cancer and matched non-carcinoma samples through immunohistochemistry (IHC). Finally, we utilized functional enrichment for identifying key pathways related to differentially expressed genes (DEGs) between PRCC cases with CENPA up-regulation and down-regulation. RESULTS CENPA expression enhanced in PRCC tissues compared with healthy counterparts (P < 0.001). CENPA up-regulation was related to pathological TNM stage and clinical stage (P < 0.05). Meanwhile, the ROC curves indicated that CENPA had a remarkable diagnostic capacity for PRCC, and the expression of CENPA can significantly improve the predictive accuracy of pathological TNM stage and clinical stage for PRCC. As revealed by KM curves, PRCC cases with CENPA up-regulation were associated with poor survival compared with those with CENPA down-regulation (Risk ratio, RR = 3.07, 95% CI: 1.58-5.97, P = 0.001). In the meantime, univariate as well as multivariate analysis showed an independent association of CENPA with overall survival (OS, P < 0.05) and the nomogram demonstrated superior predictive ability in both cohorts. IHC analysis indicated that PRCC cases showed an increased CENPA positive rate compared with controls. As revealed by functional annotations, CENPA was enriched into pathways associated with neuroactive ligand receptor interactions, cytokine receptor interactions, extracellular matrix regulators, extracellular matrix glycoproteins and nuclear matrisome. CONCLUSION CENPA expression increases within PRCC samples, which predicts dismal PRCC survival. CENPA may become a molecular prognostic marker and therapeutic target for PRCC patients.
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Affiliation(s)
- Junwu Li
- Department of Urology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400000, China
| | - Qinke Li
- Department of Urology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400000, China
| | - Yang Yuan
- Department of Urology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400000, China
| | - Yiteng Xie
- Department of Urology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400000, China
| | - Yuanfeng Zhang
- Department of Urology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400000, China.
| | - Ronggui Zhang
- Department of Urology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400000, China.
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8
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GRANT Motif Regulates CENP-A Incorporation and Restricts RNA Polymerase II Accessibility at Centromere. Genes (Basel) 2022; 13:genes13101697. [PMID: 36292582 PMCID: PMC9602348 DOI: 10.3390/genes13101697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 09/10/2022] [Accepted: 09/12/2022] [Indexed: 11/24/2022] Open
Abstract
Precise chromosome segregation is essential for maintaining genomic stability, and its proper execution centers on the centromere, a chromosomal locus that mounts the kinetochore complex to mediate attachment of chromosomes to the spindle microtubules. The location of the centromere is epigenetically determined by a centromere-specific histone H3 variant, CENP-A. Many human cancers exhibit overexpression of CENP-A, which correlates with occurrence of aneuploidy in these malignancies. Centromeric targeting of CENP-A depends on its histone fold, but recent studies showed that the N-terminal tail domain (NTD) also plays essential roles. Here, we investigated implications of NTD in conferring aneuploidy formation when CENP-A is overexpressed in fission yeast. A series of mutant genes progressively lacking one amino acid of the NTD have been constructed for overexpression in wild-type cells using the intermediate strength nmt41 promoter. Constructs hosting disrupted GRANT (Genomic stability-Regulating site within CENP-A N-Terminus) motif in NTD results in growth retardation, aneuploidy, increased localization to the centromere, upregulated RNA polymerase II accessibility and transcriptional derepression of the repressive centromeric chromatin, suggesting that GRANT residues fine-tune centromeric CENP-A incorporation and restrict RNA polymerase II accessibility. This work highlighted the importance of CENP-A NTD, particularly the GRANT motif, in aneuploidy formation of overexpressed CENP-A in fission yeast.
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9
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Yang Y, Duan M, Zha Y, Wu Z. CENP-A is a potential prognostic biomarker and correlated with immune infiltration levels in glioma patients. Front Genet 2022; 13:931222. [PMID: 36105094 PMCID: PMC9465177 DOI: 10.3389/fgene.2022.931222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 08/05/2022] [Indexed: 12/02/2022] Open
Abstract
Background: Centromeric protein A (CENP-A), an essential protein involved in chromosomal segregation during cell division, is associated with several cancer types. However, its role in gliomas remains unclear. This study examined the clinical and prognostic significance of CENP-A in gliomas. Methods: Data of patients with glioma were collected from the Cancer Genome Atlas. Logistic regression, the Kruskal–Wallis test, and the Wilcoxon signed-rank test were performed to assess the relationship between CENP-A expression and clinicopathological parameters. The Cox regression model and Kaplan–Meier curve were used to analyze the association between CENP-A and survival outcomes. A prognostic nomogram was constructed based on Cox multivariate analysis. Gene set enrichment analysis (GSEA) was conducted to identify key CENP-A-related pathways and biological processes. Results:CENP-A was upregulated in glioma samples. Increased CENP-A levels were significantly associated with the world health organization (WHO) grade [Odds ratio (OR) = 49.88 (23.52–129.06) for grade 4 vs. grades 2 and 3], primary therapy outcome [OR = 2.44 (1.64–3.68) for progressive disease (PD) and stable disease (SD) vs. partial response (PR) and complete response (CR)], isocitrate dehydrogenase (IDH) status [OR = 13.76 (9.25–20.96) for wild-type vs. mutant], 1p/19q co-deletion [OR = 5.91 (3.95–9.06) for no codeletion vs. co-deletion], and age [OR = 4.02 (2.68–6.18) for > 60 vs. ≤ 60]. Elevated CENP-A expression was correlated with shorter overall survival in both univariate [hazard ratio (HR): 5.422; 95% confidence interval (CI): 4.044–7.271; p < 0.001] and multivariate analyses (HR: 1.967; 95% CI: 1.280–3.025; p < 0.002). GSEA showed enrichment of numerous cell cycle-and tumor-related pathways in the CENP-A high expression phenotype. The calibration plot and C-index indicated the favorable performance of our nomogram for prognostic prediction in patients with glioma. Conclusion: We propose a role for CENP-A in glioma progression and its potential as a biomarker for glioma diagnosis and prognosis.
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Affiliation(s)
- Yuan Yang
- Department of Radiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Mengyun Duan
- Health Science Center, Department of Medical Imaging, Yangtze University, Jingzhou, China
| | - Yunfei Zha
- Department of Radiology, Renmin Hospital of Wuhan University, Wuhan, China
- *Correspondence: Yunfei Zha, ; Zijun Wu,
| | - Zijun Wu
- Department of Radiology, Renmin Hospital of Wuhan University, Wuhan, China
- *Correspondence: Yunfei Zha, ; Zijun Wu,
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10
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Levidou G, Palamaris K, Sykaras AG, Andreadakis G, Masaoutis C, Theochari I, Korkolopoulou P, Rontogianni D, Theocharis S. Unraveling the Role of Histone Variant CENP-A and Chaperone HJURP Expression in Thymic Epithelial Neoplasms. Int J Mol Sci 2022; 23:ijms23158339. [PMID: 35955489 PMCID: PMC9368969 DOI: 10.3390/ijms23158339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 07/25/2022] [Accepted: 07/26/2022] [Indexed: 12/04/2022] Open
Abstract
Background: Recent advances demonstrate the role of chromatin regulators, including histone variants and histone chaperones, in cancer initiation and progression. Methods: Histone H3K4me3, histone variant centromere protein (CENP-A) and histone chaperones Holliday junction recognition protein (HJURP) as well as DAXX expression were examined immunohistochemically in 95 thymic epithelial tumor (TET) specimens. Our results were compared with the expression profile of DAXX, HJURP and CENP-A in gene expression profiling interactive analysis (GEPIA2). Results: The lymphocyte-poor B3- and C-type TETs were more frequently DAXX negative (p = 0.043). B3 and C-Type TETs showed higher cytoplasmic and nuclear CENP-A (p = 0.007 and p = 0.002) and higher cytoplasmic HJURP H-score (p < 0.001). Higher nuclear CENP-A and cytoplasmic HJURP expression was associated with advanced Masaoka−Koga stage (p = 0.048 and p < 0.001). A positive correlation between HJURP and CENP-A was also observed. The presence of cytoplasmic CENP-A expression was correlated with a favorable overall survival (p = 0.03). CENP-A overexpression in survival analysis of TCGA TETs showed similar results. H3K4me3 expression was not associated with any clinicopathological parameters. Conclusions: Our results suggest a significant interaction between CENP-A and HJURP in TETs. Moreover, we confirmed the presence of a cytoplasmic CENP-A immunolocalization, suggesting also a possible favorable prognostic value of this specific immunostaining pattern.
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Affiliation(s)
- Georgia Levidou
- First Department of Pathology, National and Kapodistrian University of Athens, 11527 Athens, Greece; (G.L.); (K.P.); (A.G.S.); (G.A.); (C.M.); (I.T.); (P.K.); (D.R.)
- Department of Pathology, Paracelsus Medical University, 90419 Nuremberg, Germany
| | - Konstantinos Palamaris
- First Department of Pathology, National and Kapodistrian University of Athens, 11527 Athens, Greece; (G.L.); (K.P.); (A.G.S.); (G.A.); (C.M.); (I.T.); (P.K.); (D.R.)
| | - Alexandros G. Sykaras
- First Department of Pathology, National and Kapodistrian University of Athens, 11527 Athens, Greece; (G.L.); (K.P.); (A.G.S.); (G.A.); (C.M.); (I.T.); (P.K.); (D.R.)
| | - Georgios Andreadakis
- First Department of Pathology, National and Kapodistrian University of Athens, 11527 Athens, Greece; (G.L.); (K.P.); (A.G.S.); (G.A.); (C.M.); (I.T.); (P.K.); (D.R.)
| | - Christos Masaoutis
- First Department of Pathology, National and Kapodistrian University of Athens, 11527 Athens, Greece; (G.L.); (K.P.); (A.G.S.); (G.A.); (C.M.); (I.T.); (P.K.); (D.R.)
| | - Irene Theochari
- First Department of Pathology, National and Kapodistrian University of Athens, 11527 Athens, Greece; (G.L.); (K.P.); (A.G.S.); (G.A.); (C.M.); (I.T.); (P.K.); (D.R.)
| | - Penelope Korkolopoulou
- First Department of Pathology, National and Kapodistrian University of Athens, 11527 Athens, Greece; (G.L.); (K.P.); (A.G.S.); (G.A.); (C.M.); (I.T.); (P.K.); (D.R.)
| | - Dimitra Rontogianni
- First Department of Pathology, National and Kapodistrian University of Athens, 11527 Athens, Greece; (G.L.); (K.P.); (A.G.S.); (G.A.); (C.M.); (I.T.); (P.K.); (D.R.)
| | - Stamatios Theocharis
- First Department of Pathology, National and Kapodistrian University of Athens, 11527 Athens, Greece; (G.L.); (K.P.); (A.G.S.); (G.A.); (C.M.); (I.T.); (P.K.); (D.R.)
- Correspondence:
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11
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Liu Y, Yao Y, Liao B, Zhang H, Yang Z, Xia P, Jiang X, Ma W, Wu X, Mei C, Wang G, Gao M, Xu K, GongYe X, Cheng Z, Jiang P, Chen X, Yuan Y. A positive feedback loop of CENPU/E2F6/E2F1 facilitates proliferation and metastasis via ubiquitination of E2F6 in hepatocellular carcinoma. Int J Biol Sci 2022; 18:4071-4087. [PMID: 35844791 PMCID: PMC9274498 DOI: 10.7150/ijbs.69495] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 06/05/2022] [Indexed: 11/10/2022] Open
Abstract
Centromere protein U (CENPU), a centromere-binding protein required for cellular mitosis, has been reported to be closely associated with carcinogenesis in multiple malignancies; however, the role of CENPU in hepatocellular carcinoma (HCC) is still unclear. Herein, we investigated its biological role and molecular mechanism in the development of HCC. High CENPU expression in HCC tissue was observed and correlated positively with a poor prognosis in HCC patients. CENPU knockdown inhibited the proliferation, metastasis, and G1/S transition of HCC cells in vivo and in vitro, while ectopic expression of CENPU exerted the opposite effects. Mechanistically, CENPU physically interacted with E2F6 and promoted its ubiquitin-mediated degradation, thus affecting the transcription level of E2F1 and further accelerating the G1/S transition to promote HCC cell proliferation. E2F1 directly binds to the CENPU promoter and increases the transcription of CENPU, thereby forming a positive regulatory loop. Collectively, our findings indicate a crucial role for CENPU in E2F1-mediated signalling for cell cycle progression and reveal a role for CENPU as a predictive biomarker and therapeutic target for HCC patients.
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Affiliation(s)
- Yingyi Liu
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, PR China.,Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan 430071, Hubei, PR China
| | - Ye Yao
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, PR China.,Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan 430071, Hubei, PR China
| | - Bo Liao
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, PR China.,Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan 430071, Hubei, PR China
| | - Hao Zhang
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, PR China.,Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan 430071, Hubei, PR China
| | - Zhangshuo Yang
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, PR China.,Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan 430071, Hubei, PR China
| | - Peng Xia
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, PR China.,Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan 430071, Hubei, PR China
| | - Xiang Jiang
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, PR China.,Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan 430071, Hubei, PR China
| | - Weijie Ma
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, PR China.,Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan 430071, Hubei, PR China
| | - Xiaoling Wu
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, PR China.,Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan 430071, Hubei, PR China
| | - Chengjie Mei
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, PR China.,Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan 430071, Hubei, PR China
| | - Ganggang Wang
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, PR China.,Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan 430071, Hubei, PR China
| | - Meng Gao
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, PR China.,Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan 430071, Hubei, PR China
| | - Kequan Xu
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, PR China.,Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan 430071, Hubei, PR China
| | - Xiangdong GongYe
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, PR China.,Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan 430071, Hubei, PR China
| | - Zhixiang Cheng
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, PR China.,Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan 430071, Hubei, PR China
| | - Ping Jiang
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, PR China.,Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan 430071, Hubei, PR China
| | - Xi Chen
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, PR China.,Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan 430071, Hubei, PR China
| | - Yufeng Yuan
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, PR China.,Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan 430071, Hubei, PR China
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12
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Renaud-Pageot C, Quivy JP, Lochhead M, Almouzni G. CENP-A Regulation and Cancer. Front Cell Dev Biol 2022; 10:907120. [PMID: 35721491 PMCID: PMC9201071 DOI: 10.3389/fcell.2022.907120] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 05/11/2022] [Indexed: 11/13/2022] Open
Abstract
In mammals, CENP-A, a histone H3 variant found in the centromeric chromatin, is critical for faithful chromosome segregation and genome integrity maintenance through cell divisions. Specifically, it has dual functions, enabling to define epigenetically the centromere position and providing the foundation for building up the kinetochore. Regulation of its dynamics of synthesis and deposition ensures to propagate proper centromeres on each chromosome across mitosis and meiosis. However, CENP-A overexpression is a feature identified in many cancers. Importantly, high levels of CENP-A lead to its mislocalization outside the centromere. Recent studies in mammals have begun to uncover how CENP-A overexpression can affect genome integrity, reprogram cell fate and impact 3D nuclear organization in cancer. Here, we summarize the mechanisms that orchestrate CENP-A regulation. Then we review how, beyond its centromeric function, CENP-A overexpression is linked to cancer state in mammalian cells, with a focus on the perturbations that ensue at the level of chromatin organization. Finally, we review the clinical interest for CENP-A in cancer treatment.
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13
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LncRNA MBNL1-AS1 Represses Proliferation and Cancer Stem-Like Properties of Breast Cancer through MBNL1-AS1/ZFP36/CENPA Axis. JOURNAL OF ONCOLOGY 2022; 2022:9999343. [PMID: 35518784 PMCID: PMC9064507 DOI: 10.1155/2022/9999343] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 03/12/2022] [Accepted: 03/30/2022] [Indexed: 12/02/2022]
Abstract
Background Emerging studies have revealed long noncoding RNAs (lncRNAs) were key regulators of cancer progression. In this research, the expression and roles of MBNL1-AS1 were explored in breast cancer (BC). Methods In this study, the MBNL1-AS1 expression in breast cancer tissue, as well as in cell line, was studied by qRT-PCR assays. The effects of MBNL1-AS1 on proliferation and stemness were evaluated by MTT assays, colony formation assays, orthotopic breast tumor mice models, extreme limiting dilution analysis (ELDA), fluorescence in situ hybridization (FISH), flow cytometry assays, and sphere formation assays. Flexmap 3D assays were performed to show that MBNL1-AS1 downregulated the centromere protein A (CENPA) secretion in BC cells. Western blot, RNA pull-down assays, RNA immunoprecipitation (RIP) assays, and FISH were conducted to detect the mechanism. Results The results showed that the expression levels of MBNL1-AS1 were downregulated in breast cancer tissues and cell lines. In vitro and in vivo studies demonstrated that overexpression of MBNL1-AS1 markedly inhibited BC cells proliferation and stemness. RNA pull-down assay, RIP assay, western blot assay, and qRT-PCR assay showed that MBNL1-AS1 downregulated CENPA mRNA via directly interacting with Zinc Finger Protein 36 (ZFP36) and subsequently decreased the stability of CENPA mRNA. Restoration assays also confirmed that MBNL1-AS1 suppressed the CENPA-mediated proliferation and stemness in breast cancer cells. Conclusions The new mechanism of how MBNL1-AS1 regulates BC phenotype is elucidated, and the MBNL1-AS1/ZFP36/CENPA axis may be served as a therapeutic target for BC patients.
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14
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Ohkuni K, Gliford L, Au WC, Suva E, Kaiser P, Basrai M. Cdc48Ufd1/Npl4 segregase removes mislocalized centromeric histone H3 variant CENP-A from non-centromeric chromatin. Nucleic Acids Res 2022; 50:3276-3291. [PMID: 35234920 PMCID: PMC8989521 DOI: 10.1093/nar/gkac135] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 01/10/2022] [Accepted: 02/14/2022] [Indexed: 12/02/2023] Open
Abstract
Restricting the localization of CENP-A (Cse4 in Saccharomyces cerevisiae) to centromeres prevents chromosomal instability (CIN). Mislocalization of overexpressed CENP-A to non-centromeric chromatin contributes to CIN in budding and fission yeasts, flies, and humans. Overexpression and mislocalization of CENP-A is observed in cancers and is associated with increased invasiveness. Mechanisms that remove mislocalized CENP-A and target it for degradation have not been defined. Here, we report that Cdc48 and its cofactors Ufd1 and Npl4 facilitate the removal of mislocalized Cse4 from non-centromeric chromatin. Defects in removal of mislocalized Cse4 contribute to lethality of overexpressed Cse4 in cdc48,ufd1 andnpl4 mutants. High levels of polyubiquitinated Cse4 and mislocalization of Cse4 are observed in cdc48-3, ufd1-2 and npl4-1mutants even under normal physiological conditions, thereby defining polyubiquitinated Cse4 as the substrate of the ubiquitin directed segregase Cdc48Ufd1/Npl4. Accordingly, Npl4, the ubiquitin binding receptor, associates with mislocalized Cse4, and this interaction is dependent on Psh1-mediated polyubiquitination of Cse4. In summary, we provide the first evidence for a mechanism that facilitates the removal of polyubiquitinated and mislocalized Cse4 from non-centromeric chromatin. Given the conservation of Cdc48Ufd1/Npl4 in humans, it is likely that defects in such pathways may contribute to CIN in human cancers.
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Affiliation(s)
- Kentaro Ohkuni
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Loran Gliford
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Wei-Chun Au
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Evelyn Suva
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Peter Kaiser
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, CA 92697, USA
| | - Munira A Basrai
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
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15
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Jeffery D, Lochhead M, Almouzni G. CENP-A: A Histone H3 Variant with Key Roles in Centromere Architecture in Healthy and Diseased States. Results Probl Cell Differ 2022; 70:221-261. [PMID: 36348109 DOI: 10.1007/978-3-031-06573-6_7] [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: 06/16/2023]
Abstract
Centromeres are key architectural components of chromosomes. Here, we examine their construction, maintenance, and functionality. Focusing on the mammalian centromere- specific histone H3 variant, CENP-A, we highlight its coevolution with both centromeric DNA and its chaperone, HJURP. We then consider CENP-A de novo deposition and the importance of centromeric DNA recently uncovered with the added value from new ultra-long-read sequencing. We next review how to ensure the maintenance of CENP-A at the centromere throughout the cell cycle. Finally, we discuss the impact of disrupting CENP-A regulation on cancer and cell fate.
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Affiliation(s)
- Daniel Jeffery
- Equipe Labellisée Ligue contre le Cancer, Institut Curie, PSL Research University, CNRS, Sorbonne Université, Nuclear Dynamics Unit, UMR3664, Paris, France
| | - Marina Lochhead
- Equipe Labellisée Ligue contre le Cancer, Institut Curie, PSL Research University, CNRS, Sorbonne Université, Nuclear Dynamics Unit, UMR3664, Paris, France
| | - Geneviève Almouzni
- Equipe Labellisée Ligue contre le Cancer, Institut Curie, PSL Research University, CNRS, Sorbonne Université, Nuclear Dynamics Unit, UMR3664, Paris, France.
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16
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Kim T. Epigenetic control of centromere: what can we learn from neocentromere? Genes Genomics 2021; 44:317-325. [PMID: 34843088 DOI: 10.1007/s13258-021-01193-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 11/16/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND The centromere is the special region on a chromosome, which serves as the site for assembly of kinetochore complex and is essential for maintaining genomic integrity. Neocentromeres are new centromeres that form on the non-centromeric regions of the chromosome when the natural centromere is disrupted or inactivated. Although neocentromeres lack the typical features found in centromeres, cells with neocentromeres divide normally during mitosis and meiosis. Neocentromeres not only arise naturally but their formation can also be induced experimentally. Therefore, neocentromeres are a great tool for studying functions and formation of centromeres. OBJECTIVE To study neocentromeres and use that knowledge to gain insights into the epigenetic regulation of canonical centromeres. DISCUSSION Here, we review the characteristics of naturally occurring centromeres and neocentromeres and those of experimentally induced neocentromeres. We also discuss the mechanism of centromere formation and epigenetic regulation of centromere function, which we learned from studying the neocentromeres. Although neocentromeres lack main features of centromeres, such as presence of repetitive ⍺-satellite DNA and pericentric heterochromatin, they behave quite similar to the canonical centromere, indicating the epigenetic nature of the centromere. Still, further investigation will help to understand the formation and maintenance of the centromere, and the correlation to human diseases. CONCLUSION Neocentromeres helped us to understand the formation of canonical centromeres. Also, since neocentromeres are associated with certain cancer types, knowledge about them could be helpful to treat cancer.
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Affiliation(s)
- Taekyung Kim
- Department of Biology Education, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, Korea.
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17
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Wang K, Liu Y, Yu Z, Gu B, Hu J, Huang L, Ge X, Xu L, Zhang M, Zhao J, Hu M, Le R, Wu Q, Ye S, Gao S, Zhang X, Xu RM, Li G. Phosphorylation at Ser68 facilitates DCAF11-mediated ubiquitination and degradation of CENP-A during the cell cycle. Cell Rep 2021; 37:109987. [PMID: 34758320 DOI: 10.1016/j.celrep.2021.109987] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 06/11/2021] [Accepted: 10/19/2021] [Indexed: 12/28/2022] Open
Abstract
CENP-A (centromeric protein A), a histone H3 variant, specifies centromere identity and is essential to centromere maintenance. Little is known about how protein levels of CENP-A are controlled in mammalian cells. Here, we report that the phosphorylation of CENP-A Ser68 primes the ubiquitin-proteasome-mediated proteolysis of CENP-A during mitotic phase in human cultured cells. We identify two major polyubiquitination sites that are responsible for this phosphorylation-dependent degradation. Substituting the two residues, Lys49 and Lys124, with arginines abrogates proper CENP-A degradation and results in CENP-A mislocalization to non-centromeric regions. Furthermore, we find that DCAF11 (DDB1 and CUL4 associated factor 11/WDR23) is the E3 ligase that specifically mediates the observed polyubiquitination. Deletion of DCAF11 hampers CENP-A degradation and causes its mislocalization. We conclude that the Ser68 phosphorylation plays an important role in regulating cellular CENP-A homeostasis via DCAF11-mediated degradation to prevent ectopic localization of CENP-A during the cell cycle.
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Affiliation(s)
- Kehui Wang
- National Laboratory of Bio-macromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Science, Beijing 100101, China
| | - Yuting Liu
- National Laboratory of Bio-macromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Science, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhouliang Yu
- National Laboratory of Bio-macromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Science, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bo Gu
- College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Jie Hu
- National Laboratory of Bio-macromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Science, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li Huang
- National Laboratory of Bio-macromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Science, Beijing 100101, China
| | - Xiao Ge
- Center for Comparative Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Institute of Systems Biomedicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Lingyi Xu
- Department of Biophysics, Department of Pathology of Sir Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China; Department of Biophysics, Institute of Neuroscience, NHC and CAMS Key Laboratory of Medical Neurobiology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Mengyu Zhang
- Tianjin Key Laboratory of Function and Application of Biological Macromolecular Structures, School of Life Sciences, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China
| | - Jicheng Zhao
- National Laboratory of Bio-macromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Science, Beijing 100101, China
| | - Mingli Hu
- National Laboratory of Bio-macromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Science, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rongrong Le
- School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Qiang Wu
- Center for Comparative Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Institute of Systems Biomedicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Sheng Ye
- Tianjin Key Laboratory of Function and Application of Biological Macromolecular Structures, School of Life Sciences, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China; Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
| | - Shaorong Gao
- School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Xiaodong Zhang
- College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Rui-Ming Xu
- National Laboratory of Bio-macromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Science, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guohong Li
- National Laboratory of Bio-macromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Science, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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18
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Wang Q, Xu J, Xiong Z, Xu T, Liu J, Liu Y, Chen J, Shi J, Shou Y, Yue C, Liu D, Liang H, Yang H, Yang X, Zhang X. CENPA promotes clear cell renal cell carcinoma progression and metastasis via Wnt/β-catenin signaling pathway. J Transl Med 2021; 19:417. [PMID: 34627268 PMCID: PMC8502268 DOI: 10.1186/s12967-021-03087-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 09/24/2021] [Indexed: 12/15/2022] Open
Abstract
Clear cell renal cell carcinoma (ccRCC) is the most common malignant tumor of the kidney. New and reliable biomarkers are in urgent need for ccRCC diagnosis and prognosis. The CENP family is overexpressed in many types of cancers, but its functions in ccRCC have not been fully clarified. In this paper, we found that several CENP family members were highly expressed in ccRCC tissues. Also, CENPA expression level was related to clinicopathological grade and prognosis by weighted gene co-expression network analysis (WGCNA). CENPA served as a representative CENP family member as a ccRCC biomarker. Further in vitro experiments verified that overexpression of CENPA promoted ccRCC proliferation and metastasis by accelerating the cell cycle and activating the Wnt/β-catenin signaling pathway. The elevated β-catenin led by CENPA overexpression translocated to nucleus for downstream effect. Functional recovery experiment confirmed that Wnt/β-catenin pathway was essential for ccRCC progression and metastasis. Developing selective drugs targeting CENPA may be a promising direction for cancer treatment.
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Affiliation(s)
- Qi Wang
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jiaju Xu
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Zhiyong Xiong
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Tianbo Xu
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jingchong Liu
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yuenan Liu
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jiaping Chen
- Department of Thoracic, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jian Shi
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yi Shou
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Changjie Yue
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Di Liu
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Huageng Liang
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Hongmei Yang
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xiong Yang
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Xiaoping Zhang
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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19
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Liu X, Wang H, Zhao G. Centromere Protein A Goes Far Beyond the Centromere in Cancers. Mol Cancer Res 2021; 20:3-10. [PMID: 34465586 DOI: 10.1158/1541-7786.mcr-21-0311] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/05/2021] [Accepted: 08/26/2021] [Indexed: 11/16/2022]
Abstract
Centromere dysfunctions leading to numerical chromosome alterations are believed to be closely related to human cancers. As a centromere-specific protein, centromere protein A (CENP-A) replaces the histone H3 in centromeres and is therefore considered a key factor of centromere identity. Researches have shown that CENP-A is overexpressed in many types of human cancers. However, the behavior and function of CENP-A in tumorigenesis have not yet been systematically summarized. In this article, we describe the pleiotropic roles of CENP-A in human cells. Moreover, we provide a comprehensive review of the current knowledge on the relationship between aberrant expression and ectopic localization of CENP-A and tumorigenesis, and the mechanism of the ectopic deposition of CENP-A in cancers. Furthermore, we note that some oncogenic viruses can modulate the expression and localization of this centromere protein along with its chaperone. At last, we also discuss the therapeutic potential of targeting CENP-A for cancer therapy.
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Affiliation(s)
- Xiaolan Liu
- Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science & Technology, Wuhan, Hubei, China. .,Research Center for Psychological and Health Sciences, China University of Geosciences, Wuhan, China
| | - Haiping Wang
- School of Medicine, Jianghan University, Wuhan, Hubei, China
| | - Guojun Zhao
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
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20
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Verrelle P, Meseure D, Berger F, Forest A, Leclère R, Nicolas A, Fortas E, Sastre-Garau X, Lae M, Boudjemaa S, Mbagui R, Calugaru V, Labiod D, De Koning L, Almouzni G, Quivy JP. CENP-A Subnuclear Localization Pattern as Marker Predicting Curability by Chemoradiation Therapy for Locally Advanced Head and Neck Cancer Patients. Cancers (Basel) 2021; 13:cancers13163928. [PMID: 34439087 PMCID: PMC8391827 DOI: 10.3390/cancers13163928] [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: 06/11/2021] [Revised: 07/28/2021] [Accepted: 07/29/2021] [Indexed: 12/11/2022] Open
Abstract
Simple Summary For clinicians, rapid diagnosis of early neoplastic lesions and prediction of treatment response are two key aspects to guide their choice of treatment. Current histological markers are based on proliferation, differentiation states or specific cell function, but do not take full advantage of tumor characteristics. We show that the subnuclear distribution of CENP-A, the centromeric histone variant, provides, for both aspects, information distinct from and independent of commonly used markers. Our study reveals that in locally advanced head and neck squamous cell cancer patients, the subnuclear distribution of CENP-A at the time of diagnosis is an independent predictive marker of local disease control and curability by concurrent chemoradiation therapy. We provide evidence for the clinical applicability of this CENP-A labeling as a cost-effective marker regardless of genetic alterations in the tumor, perfectly compatible with the clinical time constraints in the course of therapy. Abstract Effective biomarkers predictive of the response to treatments are key for precision medicine. This study identifies the staining pattern of the centromeric histone 3 variant, CENP-A, as a predictive biomarker of locoregional disease curability by chemoradiation therapy. We compared by imaging the subnuclear distribution of CENP-A in normal and tumoral tissues, and in a retrospective study in biopsies of 62 locally advanced head and neck squamous cell carcinoma (HNSCC) patients treated by chemoradiation therapy. We looked for predictive factors of locoregional disease control and patient’s survival, including CENP-A patterns, Ki67, HPV status and anisokaryosis. In different normal tissues, we reproducibly found a CENP-A subnuclear pattern characterized by CENP-A clusters both localized at the nuclear periphery and regularly spaced. In corresponding tumors, both features are lost. In locally advanced HNSCC, a specific CENP-A pattern identified in pretreatment biopsies predicts definitive locoregional disease control after chemoradiation treatment in 96% (24/25) of patients (OR = 17.6 CI 95% [2.6; 362.8], p = 0.002), independently of anisokaryosis, Ki67 labeling or HPV status. The characteristics of the subnuclear pattern of CENP-A in cell nuclei revealed by immunohistochemistry could provide an easy to use a reliable marker of disease curability by chemoradiation therapy in locally advanced HNSCC patients.
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Affiliation(s)
- Pierre Verrelle
- Institut Curie, PSL Research University, CNRS, Sorbonne Université, Nuclear Dynamics Unit, Equipe Labellisée Ligue Contre le Cancer, 26 rue d’Ulm, 75005 Paris, France;
- University of Clermont Auvergne, UFR Médecine, 63001 Clermont-Ferrand, France
- CNRS UMR 9187, INSERM U1196, Institut Curie, PSL Research University and Paris-Saclay University, 91405 Orsay, France
- Radiation Oncology Department, Institut Curie, 75005 Paris, France; (R.M.); (V.C.)
- Correspondence: (P.V.); (G.A.); (J.-P.Q.)
| | - Didier Meseure
- Platform of Experimental Pathology PATHEX, Institut Curie, 75005 Paris, France; (D.M.); (R.L.); (A.N.); (E.F.)
- Department of Diagnostic and Theranostic Medicine, Institut Curie, 75005 Paris, France
| | - Frédérique Berger
- Institut Curie, PSL Research University, Biometry Unit, 75005 Paris, France;
| | - Audrey Forest
- Institut Curie, PSL Research University, CNRS, Sorbonne Université, Nuclear Dynamics Unit, Equipe Labellisée Ligue Contre le Cancer, 26 rue d’Ulm, 75005 Paris, France;
| | - Renaud Leclère
- Platform of Experimental Pathology PATHEX, Institut Curie, 75005 Paris, France; (D.M.); (R.L.); (A.N.); (E.F.)
- Department of Diagnostic and Theranostic Medicine, Institut Curie, 75005 Paris, France
| | - André Nicolas
- Platform of Experimental Pathology PATHEX, Institut Curie, 75005 Paris, France; (D.M.); (R.L.); (A.N.); (E.F.)
- Department of Diagnostic and Theranostic Medicine, Institut Curie, 75005 Paris, France
| | - Emilie Fortas
- Platform of Experimental Pathology PATHEX, Institut Curie, 75005 Paris, France; (D.M.); (R.L.); (A.N.); (E.F.)
- Department of Diagnostic and Theranostic Medicine, Institut Curie, 75005 Paris, France
| | - Xavier Sastre-Garau
- Department of Pathology, Intercommunal Hospital Center of Creteil, 94000 Créteil, France;
| | - Marick Lae
- Department of Pathology, Centre Henri Becquerel, INSERM U1245, UNIROUEN, University of Normandie, 76031 Rouen, France;
| | - Sabah Boudjemaa
- Department of Pathology, Hôpital Armand Trousseau, 75012 Paris, France;
| | - Rodrigue Mbagui
- Radiation Oncology Department, Institut Curie, 75005 Paris, France; (R.M.); (V.C.)
| | - Valentin Calugaru
- Radiation Oncology Department, Institut Curie, 75005 Paris, France; (R.M.); (V.C.)
| | - Dalila Labiod
- Translational Research Department, Experimental Radiotherapy Platform, Institut Curie, PSL Research University, University Paris Saclay, 91400 Orsay, France;
| | - Leanne De Koning
- Department of Translational Research, Institut Curie, PSL Research University, 75005 Paris, France;
| | - Geneviève Almouzni
- Institut Curie, PSL Research University, CNRS, Sorbonne Université, Nuclear Dynamics Unit, Equipe Labellisée Ligue Contre le Cancer, 26 rue d’Ulm, 75005 Paris, France;
- Correspondence: (P.V.); (G.A.); (J.-P.Q.)
| | - Jean-Pierre Quivy
- Institut Curie, PSL Research University, CNRS, Sorbonne Université, Nuclear Dynamics Unit, Equipe Labellisée Ligue Contre le Cancer, 26 rue d’Ulm, 75005 Paris, France;
- Correspondence: (P.V.); (G.A.); (J.-P.Q.)
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21
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Ryu HY, Hochstrasser M. Histone sumoylation and chromatin dynamics. Nucleic Acids Res 2021; 49:6043-6052. [PMID: 33885816 PMCID: PMC8216275 DOI: 10.1093/nar/gkab280] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/28/2021] [Accepted: 04/08/2021] [Indexed: 12/17/2022] Open
Abstract
Chromatin structure and gene expression are dynamically controlled by post-translational modifications (PTMs) on histone proteins, including ubiquitylation, methylation, acetylation and small ubiquitin-like modifier (SUMO) conjugation. It was initially thought that histone sumoylation exclusively suppressed gene transcription, but recent advances in proteomics and genomics have uncovered its diverse functions in cotranscriptional processes, including chromatin remodeling, transcript elongation, and blocking cryptic initiation. Histone sumoylation is integral to complex signaling codes that prime additional histone PTMs as well as modifications of the RNA polymerase II carboxy-terminal domain (RNAPII-CTD) during transcription. In addition, sumoylation of histone variants is critical for the DNA double-strand break (DSB) response and for chromosome segregation during mitosis. This review describes recent findings on histone sumoylation and its coordination with other histone and RNAPII-CTD modifications in the regulation of chromatin dynamics.
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Affiliation(s)
- Hong-Yeoul Ryu
- School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group, College of National Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Mark Hochstrasser
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT 06520, USA
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22
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Zhou Y, Chai H, Guo L, Dai Z, Lai J, Duan J, Liu Y, Ding Q. Knockdown of CENPW Inhibits Hepatocellular Carcinoma Progression by Inactivating E2F Signaling. Technol Cancer Res Treat 2021; 20:15330338211007253. [PMID: 33973496 PMCID: PMC8120521 DOI: 10.1177/15330338211007253] [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] [Indexed: 12/20/2022] Open
Abstract
Aim: This study aimed to evaluate the effects of centromere protein W (CENPW, also known as CUG2) in hepatocellular carcinoma (HCC). Methods: CENPW expression in HCC tissues and cells was detected by RT-qPCR assay. CCK-8 and colony formation assay were used to assess cell proliferation. Wound healing and Transwell assay was used to detect cell migration and invasion, respectively. The flow cytometry was used to analyze the cell cycle distribution and apoptosis. Results: CENPW expression was upregulated in HCC tissues and cells. Knockdown of CENPW inhibited cell proliferation, migration, and invasion and induced the G0/G1 phase arrest and cell apoptosis in HCC cells, which might involve the E2F signaling regulation. Conclusion: CENPW acted as an oncogenic role in HCC progression via activation E2F signaling. Our findings may provide new insights into the studying mechanisms of HCC.
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Affiliation(s)
- Yajing Zhou
- Department of Physical Therapy, Qingdao No.6 People's Hospital, Qingdao, Shandong, People's Republic of China
| | - Hua Chai
- Department of Liver Disease, Qingdao No.6 People's Hospital, Qingdao, Shandong, People's Republic of China
| | - Lei Guo
- Department of Infectious Diseases, Qingdao No.6 People's Hospital, Qingdao, Shandong, People's Republic of China
| | - Zhongqiu Dai
- Department of Infectious Diseases, Qingdao No.6 People's Hospital, Qingdao, Shandong, People's Republic of China
| | - Jianming Lai
- Medical College, 12593Qingdao University, Qingdao, Shandong, People's Republic of China
| | - Jianping Duan
- Department of Infectious Diseases, Qingdao No.6 People's Hospital, Qingdao, Shandong, People's Republic of China
| | - Yanting Liu
- Department of Ten Areas of Liver Disease, Qingdao No.6 People's Hospital, Qingdao, Shandong, People's Republic of China
| | - Qian Ding
- Department of Infectious Diseases, Qingdao No.6 People's Hospital, Qingdao, Shandong, People's Republic of China
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23
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Abstract
Cancer is a complex disease characterized by loss of cellular homeostasis through genetic and epigenetic alterations. Emerging evidence highlights a role for histone variants and their dedicated chaperones in cancer initiation and progression. Histone variants are involved in processes as diverse as maintenance of genome integrity, nuclear architecture and cell identity. On a molecular level, histone variants add a layer of complexity to the dynamic regulation of transcription, DNA replication and repair, and mitotic chromosome segregation. Because these functions are critical to ensure normal proliferation and maintenance of cellular fate, cancer cells are defined by their capacity to subvert them. Hijacking histone variants and their chaperones is emerging as a common means to disrupt homeostasis across a wide range of cancers, particularly solid tumours. Here we discuss histone variants and histone chaperones as tumour-promoting or tumour-suppressive players in the pathogenesis of cancer.
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Affiliation(s)
| | - Dan Filipescu
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
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24
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Jeffery D, Gatto A, Podsypanina K, Renaud-Pageot C, Ponce Landete R, Bonneville L, Dumont M, Fachinetti D, Almouzni G. CENP-A overexpression promotes distinct fates in human cells, depending on p53 status. Commun Biol 2021; 4:417. [PMID: 33772115 PMCID: PMC7997993 DOI: 10.1038/s42003-021-01941-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 02/25/2021] [Indexed: 12/13/2022] Open
Abstract
Tumour evolution is driven by both genetic and epigenetic changes. CENP-A, the centromeric histone H3 variant, is an epigenetic mark that directly perturbs genetic stability and chromatin when overexpressed. Although CENP-A overexpression is a common feature of many cancers, how this impacts cell fate and response to therapy remains unclear. Here, we established a tunable system of inducible and reversible CENP-A overexpression combined with a switch in p53 status in human cell lines. Through clonogenic survival assays, single-cell RNA-sequencing and cell trajectory analysis, we uncover the tumour suppressor p53 as a key determinant of how CENP-A impacts cell state, cell identity and therapeutic response. If p53 is functional, CENP-A overexpression promotes senescence and radiosensitivity. Surprisingly, when we inactivate p53, CENP-A overexpression instead promotes epithelial-mesenchymal transition, an essential process in mammalian development but also a precursor for tumour cell invasion and metastasis. Thus, we uncover an unanticipated function of CENP-A overexpression to promote cell fate reprogramming, with important implications for development and tumour evolution.
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Grants
- Ligue Contre le Cancer
- Agence Nationale de la Recherche (French National Research Agency)
- Université de Recherche Paris Sciences et Lettres (PSL Research University)
- Centre National de la Recherche Scientifique (National Center for Scientific Research)
- Institut Curie
- AG, CRP, DJ, KP, LB, RPL and GA were supported by la Ligue Nationale contre le Cancer (Equipe labellisée Ligue), Labex DEEP (ANR-11-LABX-0044_DEEP, ANR-10-IDEX-0001-02), PSL, ERC-2015-ADG-694694 ChromADICT and ANR-16-CE12-0024 CHIFT. Funding for RPL provided by Horizon 2020 Marie Skłodowska-Curie Actions Initial Training Network “EpiSyStem” (grant number 765966). Individual funding was also provided to DJ from la Fondation ARC pour la recherche sur le cancer (“Aides individuelles” 3 years, post-doc), and to AG from the Horizon 2020 Framework Programme for Research and Innovation (H2020 Marie Skłodowska-Curie Actions grant agreement 798106 “REPLICHROM4D”). DF receives salary support from the Centre Nationale de Recherche Scientifique (CNRS). MD receives salary support from the City of Paris via Emergence(s) 2018 of DF.
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Affiliation(s)
- Daniel Jeffery
- Institut Curie, PSL Research University, CNRS, Sorbonne Université, Nuclear Dynamics Unit, Equipe Labellisée Ligue contre le Cancer, Paris, France
| | - Alberto Gatto
- Institut Curie, PSL Research University, CNRS, Sorbonne Université, Nuclear Dynamics Unit, Equipe Labellisée Ligue contre le Cancer, Paris, France
| | - Katrina Podsypanina
- Institut Curie, PSL Research University, CNRS, Sorbonne Université, Nuclear Dynamics Unit, Equipe Labellisée Ligue contre le Cancer, Paris, France
| | - Charlène Renaud-Pageot
- Institut Curie, PSL Research University, CNRS, Sorbonne Université, Nuclear Dynamics Unit, Equipe Labellisée Ligue contre le Cancer, Paris, France
| | - Rebeca Ponce Landete
- Institut Curie, PSL Research University, CNRS, Sorbonne Université, Nuclear Dynamics Unit, Equipe Labellisée Ligue contre le Cancer, Paris, France
| | - Lorraine Bonneville
- Institut Curie, PSL Research University, CNRS, Sorbonne Université, Nuclear Dynamics Unit, Equipe Labellisée Ligue contre le Cancer, Paris, France
| | - Marie Dumont
- Institut Curie, PSL Research University, Centre de Recherche, Sorbonne Université, Cell Biology and Cancer Unit, Paris, France
| | - Daniele Fachinetti
- Institut Curie, PSL Research University, Centre de Recherche, Sorbonne Université, Cell Biology and Cancer Unit, Paris, France
| | - Geneviève Almouzni
- Institut Curie, PSL Research University, CNRS, Sorbonne Université, Nuclear Dynamics Unit, Equipe Labellisée Ligue contre le Cancer, Paris, France.
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25
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Rashid M, Shah SG, Verma T, Chaudhary N, Rauniyar S, Patel VB, Gera PB, Smoot D, Ashaktorab H, Dalal SN, Gupta S. Tumor-specific overexpression of histone gene, H3C14 in gastric cancer is mediated through EGFR-FOXC1 axis. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2021; 1864:194703. [PMID: 33727172 DOI: 10.1016/j.bbagrm.2021.194703] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 02/15/2021] [Accepted: 03/07/2021] [Indexed: 02/08/2023]
Abstract
Incorporation of different H3 histone isoforms/variants have been reported to differentially regulate gene expression via alteration in chromatin organization during diverse cellular processes. However, the differential expression of highly conserved histone H3.2 genes, H3C14 and H3C13 in human cancer has not been delineated. In this study, we investigated the expression of H3.2 genes in primary human gastric, brain, breast, colon, liver, and head and neck cancer tissues and tumor cell lines. The data showed overexpression of H3.2 transcripts in tumor samples and cell lines with respect to normal counterparts. Furthermore, TCGA data of individual and TCGA PANCAN cohort also showed significant up-regulation of H3.2 genes. Further, overexpressed H3C14 gene coding for H3.2 protein was regulated by FOXC1 transcription factor and G4-cassette in gastric cancer cell lines. Elevated expression of FOXC1 protein and transcripts were also observed in human gastric cancer samples and cell lines. Further, FOXC1 protein was predominantly localized in the nuclei of neoplastic gastric cells compared to normal counterpart. In continuation, studies with EGF induction, FOXC1 knockdown, and ChIP-qPCR for the first time identified a novel axis, EGFR-FOXC1-H3C14 for regulation of H3C14 gene overexpression in gastric cancer. Therefore, the changes the epigenomic landscape due to incorporation of differential expression H3 variant contributes to change in gene expression pattern and thereby contributing to pathogenesis of cancer.
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Affiliation(s)
- Mudasir Rashid
- KS313, Epigenetics and Chromatin Biology Group, Gupta Lab, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Kharghar, Navi Mumbai 410210, MH, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, MH, India
| | - Sanket Girish Shah
- KS313, Epigenetics and Chromatin Biology Group, Gupta Lab, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Kharghar, Navi Mumbai 410210, MH, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, MH, India
| | - Tripti Verma
- KS313, Epigenetics and Chromatin Biology Group, Gupta Lab, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Kharghar, Navi Mumbai 410210, MH, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, MH, India
| | - Nazia Chaudhary
- KS216, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Kharghar, Navi Mumbai 410210, MH, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, MH, India
| | - Sukanya Rauniyar
- KS313, Epigenetics and Chromatin Biology Group, Gupta Lab, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Kharghar, Navi Mumbai 410210, MH, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, MH, India
| | - Vidisha Bhavesh Patel
- KS313, Epigenetics and Chromatin Biology Group, Gupta Lab, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Kharghar, Navi Mumbai 410210, MH, India
| | - Poonam B Gera
- Biorepository, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Kharghar, Navi Mumbai 410210, MH, India
| | - Duane Smoot
- Department of Medicine, Meharry Medical Center, Nashville, TN 37208, United States
| | - Hassan Ashaktorab
- Department of Medicine and Cancer Center, College of Medicine, Howard University, Washington DC, WA 20060, United States
| | - Sorab N Dalal
- KS216, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Kharghar, Navi Mumbai 410210, MH, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, MH, India
| | - Sanjay Gupta
- KS313, Epigenetics and Chromatin Biology Group, Gupta Lab, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Kharghar, Navi Mumbai 410210, MH, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, MH, India.
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26
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Fu X, Cheng S, Wang W, Shi O, Gao F, Li Y, Wang Q. TCGA dataset screening for genes implicated in endometrial cancer using RNA-seq profiling. Cancer Genet 2021; 254-255:40-47. [PMID: 33588182 DOI: 10.1016/j.cancergen.2021.01.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 01/12/2021] [Accepted: 01/28/2021] [Indexed: 01/20/2023]
Abstract
The molecular basis of the mechanism and the potential biomarkers of endometrial cancer (EC) remain to be studied. In the present study, we hypothesized that the comprehensive characterization of transcriptional changes in EC could help achieve this aim. By taking advantage of RNA-seq data from The Cancer Genome Atlas, we determined the profile of differently expressed genes (DEGs) between EC tumor tissues and normal samples. On this basis, we performed Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathways enrichment analyses. The interacting partners for each of the DEGs were explored and a protein-protein interaction network was constructed. Consequently, 10 hub genes were identified and their association with mortality in EC patients was investigated. The genes, AURKA, CENPA, and KIF2C, were found to be potential biomarkers for EC with a significant prognostic effect. Our work provided a basis for EC studies in both biological and clinical settings.
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Affiliation(s)
- Xiaoli Fu
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Shuai Cheng
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China; The Key Laboratory of Nanomedicine and Health Inspection of Zhengzhou, Zhengzhou 450001, China
| | - Wei Wang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China; The Key Laboratory of Nanomedicine and Health Inspection of Zhengzhou, Zhengzhou 450001, China
| | - Oumin Shi
- Health Science Center, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen 518020, China
| | - Fuxiao Gao
- China Canada Medical and Health Science Association, Toronto L3R 1A3, Canada
| | - Yong Li
- Department of Oncology, Guizhou Provincial People's Hospital, Guiyang, Guizhou 550002, China
| | - Qi Wang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China; China Canada Medical and Health Science Association, Toronto L3R 1A3, Canada.
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27
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Caffrey PJ, Delaney S. Chromatin and other obstacles to base excision repair: potential roles in carcinogenesis. Mutagenesis 2021; 35:39-50. [PMID: 31612219 DOI: 10.1093/mutage/gez029] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 09/13/2019] [Indexed: 12/29/2022] Open
Abstract
DNA is comprised of chemically reactive nucleobases that exist under a constant barrage from damaging agents. Failure to repair chemical modifications to these nucleobases can result in mutations that can cause various diseases, including cancer. Fortunately, the base excision repair (BER) pathway can repair modified nucleobases and prevent these deleterious mutations. However, this pathway can be hindered through several mechanisms. For instance, mutations to the enzymes in the BER pathway have been identified in cancers. Biochemical characterisation of these mutants has elucidated various mechanisms that inhibit their activity. Furthermore, the packaging of DNA into chromatin poses another obstacle to the ability of BER enzymes to function properly. Investigations of BER in the base unit of chromatin, the nucleosome core particle (NCP), have revealed that the NCP acts as a complex substrate for BER enzymes. The constituent proteins of the NCP, the histones, also have variants that can further impact the structure of the NCP and may modulate access of enzymes to the packaged DNA. These histone variants have also displayed significant clinical effects both in carcinogenesis and patient prognosis. This review focuses on the underlying molecular mechanisms that present obstacles to BER and the relationship of these obstacles to cancer. In addition, several chemotherapeutics induce DNA damage that can be repaired by the BER pathway and understanding obstacles to BER can inform how resistance and/or sensitivity to these therapies may occur. With the understanding of these molecular mechanisms, current chemotherapeutic treatment regiments may be improved, and future therapies developed.
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Affiliation(s)
- Paul J Caffrey
- Department of Chemistry, Brown University, Providence, RI
| | - Sarah Delaney
- Department of Chemistry, Brown University, Providence, RI
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Wu C, Cai X, Yan J, Deng A, Cao Y, Zhu X. Identification of Novel Glycolysis-Related Gene Signatures Associated With Prognosis of Patients With Clear Cell Renal Cell Carcinoma Based on TCGA. Front Genet 2020; 11:589663. [PMID: 33391344 PMCID: PMC7775602 DOI: 10.3389/fgene.2020.589663] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 11/16/2020] [Indexed: 12/14/2022] Open
Abstract
Objective The purpose of the present study was to detect novel glycolysis-related gene signatures of prognostic values for patients with clear cell renal cell carcinoma (ccRCC). Methods Glycolysis-related gene sets were acquired from the Molecular Signatures Database (V7.0). Gene Set Enrichment Analysis (GSEA) software (4.0.3) was applied to analyze glycolysis-related gene sets. The Perl programming language (5.32.0) was used to extract glycolysis-related genes and clinical information of patients with ccRCC. The receiver operating characteristic curve (ROC) and Kaplan-Meier curve were drawn by the R programming language (3.6.3). Results The four glycolysis-related genes (B3GAT3, CENPA, AGL, and ALDH3A2) associated with prognosis were identified using Cox proportional regression analysis. A risk score staging system was established to predict the outcomes of patients with ccRCC. The patients with ccRCC were classified into the low-risk group and high-risk group. Conclusions We have successfully constructed a risk staging model for ccRCC. The model has a better performance in predicting the prognosis of patients, which may have positive reference value for the treatment and curative effect evaluation of ccRCC.
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Affiliation(s)
- Chengjiang Wu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Xiaojie Cai
- Department of Radiology, Affiliated Changshu Hospital of Soochow University, First People's Hospital of Changshu City, Suzhou, China
| | - Jie Yan
- Department of Clinical Laboratory, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Anyu Deng
- Department of Clinical Laboratory, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Yun Cao
- Department of Clinical Laboratory, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Xueming Zhu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Soochow University, Suzhou, China
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Bungsy M, Palmer MCL, Jeusset LM, Neudorf NM, Lichtensztejn Z, Nachtigal MW, McManus KJ. Reduced RBX1 expression induces chromosome instability and promotes cellular transformation in high-grade serous ovarian cancer precursor cells. Cancer Lett 2020; 500:194-207. [PMID: 33290867 DOI: 10.1016/j.canlet.2020.11.051] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 11/26/2020] [Accepted: 11/30/2020] [Indexed: 12/14/2022]
Abstract
Despite high-grade serous ovarian cancer (HGSOC) being the most common and lethal gynecological cancer in women, the early etiological events driving disease development remain largely unknown. Emerging evidence now suggests that chromosome instability (CIN; ongoing changes in chromosome numbers) may play a central role in the development and progression of HGSOC. Importantly, genomic amplification of the Cyclin E1 gene (CCNE1) contributes to HGSOC pathogenesis in ~20% of patients, while Cyclin E1 overexpression induces CIN in model systems. Cyclin E1 levels are normally regulated by the SCF (SKP1-CUL1-FBOX) complex, an E3 ubiquitin ligase that includes RBX1 as a core component. Interestingly, RBX1 is heterozygously lost in ~80% of HGSOC cases and reduced expression corresponds with worse outcomes, suggesting it may be a pathogenic event. Using both short (siRNA) and long (CRISPR/Cas9) term approaches, we show that reduced RBX1 expression corresponds with significant increases in CIN phenotypes in fallopian tube secretory epithelial cells, a cellular precursor of HGSOC. Moreover, reduced RBX1 expression corresponds with increased Cyclin E1 levels and anchorage-independent growth. Collectively, these data identify RBX1 as a novel CIN gene with pathogenic implications for HGSOC.
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Affiliation(s)
- Manisha Bungsy
- Research Institute in Oncology & Hematology, Winnipeg, Manitoba, R3E 0V9, Canada; Department of Biochemistry and Medical Genetics, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, R3E 0V9, Canada
| | - Michaela C L Palmer
- Research Institute in Oncology & Hematology, Winnipeg, Manitoba, R3E 0V9, Canada; Department of Biochemistry and Medical Genetics, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, R3E 0V9, Canada
| | - Lucile M Jeusset
- Research Institute in Oncology & Hematology, Winnipeg, Manitoba, R3E 0V9, Canada; Department of Biochemistry and Medical Genetics, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, R3E 0V9, Canada
| | - Nicole M Neudorf
- Research Institute in Oncology & Hematology, Winnipeg, Manitoba, R3E 0V9, Canada; Department of Biochemistry and Medical Genetics, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, R3E 0V9, Canada
| | - Zelda Lichtensztejn
- Research Institute in Oncology & Hematology, Winnipeg, Manitoba, R3E 0V9, Canada; Department of Biochemistry and Medical Genetics, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, R3E 0V9, Canada
| | - Mark W Nachtigal
- Research Institute in Oncology & Hematology, Winnipeg, Manitoba, R3E 0V9, Canada; Department of Biochemistry and Medical Genetics, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, R3E 0V9, Canada; Department of Obstetrics, Gynecology & Reproductive Sciences, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Kirk J McManus
- Research Institute in Oncology & Hematology, Winnipeg, Manitoba, R3E 0V9, Canada; Department of Biochemistry and Medical Genetics, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, R3E 0V9, Canada.
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Ferrand J, Rondinelli B, Polo SE. Histone Variants: Guardians of Genome Integrity. Cells 2020; 9:E2424. [PMID: 33167489 PMCID: PMC7694513 DOI: 10.3390/cells9112424] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 10/30/2020] [Accepted: 11/03/2020] [Indexed: 12/12/2022] Open
Abstract
Chromatin integrity is key for cell homeostasis and for preventing pathological development. Alterations in core chromatin components, histone proteins, recently came into the spotlight through the discovery of their driving role in cancer. Building on these findings, in this review, we discuss how histone variants and their associated chaperones safeguard genome stability and protect against tumorigenesis. Accumulating evidence supports the contribution of histone variants and their chaperones to the maintenance of chromosomal integrity and to various steps of the DNA damage response, including damaged chromatin dynamics, DNA damage repair, and damage-dependent transcription regulation. We present our current knowledge on these topics and review recent advances in deciphering how alterations in histone variant sequence, expression, and deposition into chromatin fuel oncogenic transformation by impacting cell proliferation and cell fate transitions. We also highlight open questions and upcoming challenges in this rapidly growing field.
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Affiliation(s)
| | | | - Sophie E. Polo
- Epigenetics & Cell Fate Centre, UMR7216 CNRS, Université de Paris, 75013 Paris, France; (J.F.); (B.R.)
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31
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N-Terminus Does Not Govern Protein Turnover of Schizosaccharomyces pombe CENP-A. Int J Mol Sci 2020; 21:ijms21176175. [PMID: 32859127 PMCID: PMC7503380 DOI: 10.3390/ijms21176175] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/18/2020] [Accepted: 08/21/2020] [Indexed: 12/15/2022] Open
Abstract
Centromere integrity underlies an essential framework for precise chromosome segregation and epigenetic inheritance. Although centromeric DNA sequences vary among different organisms, all eukaryotic centromeres comprise a centromere-specific histone H3 variant, centromeric protein A (CENP-A), on which other centromeric proteins assemble into the kinetochore complex. This complex connects chromosomes to mitotic spindle microtubules to ensure accurate partitioning of the genome into daughter cells. Overexpression of CENP-A is associated with many cancers and is correlated with its mistargeting, forming extra-centromeric kinetochore structures. The mislocalization of CENP-A can be counteracted by proteolysis. The amino (N)-terminal domain (NTD) of CENP-A has been implicated in this regulation and shown to be dependent on the proline residues within this domain in Saccharomyces cerevisiae CENP-A, Cse4. We recently identified a proline-rich GRANT motif in the NTD of Schizosaccharomyces pombe CENP-A (SpCENP-A) that regulates the centromeric targeting of CENP-A via binding to the CENP-A chaperone Sim3. Here, we investigated whether the NTD is required to confer SpCENP-A turnover (i.e., counter stability) using various truncation mutants of SpCENP-A. We show that sequential truncation of the NTD did not improve the stability of the protein, indicating that the NTD of SpCENP-A does not drive turnover of the protein. Instead, we reproduced previous observations that heterochromatin integrity is important for SpCENP-A stability, and showed that this occurs in an NTD-independent manner. Cells bearing the null mutant of the histone H3 lysine 9 methyltransferase Clr4 (Δclr4), which have compromised constitutive heterochromatin integrity, showed reductions in the proportion of SpCENP-A in the chromatin-containing insoluble fraction of the cell extract, suggesting that heterochromatin may promote SpCENP-A chromatin incorporation. Thus, a disruption in heterochromatin may result in the delocalization of SpCENP-A from chromatin, thus exposing it to protein turnover. Taken together, we show that the NTD is not required to confer SpCENP-A protein turnover.
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32
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Mahlke MA, Nechemia-Arbely Y. Guarding the Genome: CENP-A-Chromatin in Health and Cancer. Genes (Basel) 2020; 11:genes11070810. [PMID: 32708729 PMCID: PMC7397030 DOI: 10.3390/genes11070810] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/10/2020] [Accepted: 07/15/2020] [Indexed: 02/07/2023] Open
Abstract
Faithful chromosome segregation is essential for the maintenance of genomic integrity and requires functional centromeres. Centromeres are epigenetically defined by the histone H3 variant, centromere protein A (CENP-A). Here we highlight current knowledge regarding CENP-A-containing chromatin structure, specification of centromere identity, regulation of CENP-A deposition and possible contribution to cancer formation and/or progression. CENP-A overexpression is common among many cancers and predicts poor prognosis. Overexpression of CENP-A increases rates of CENP-A deposition ectopically at sites of high histone turnover, occluding CCCTC-binding factor (CTCF) binding. Ectopic CENP-A deposition leads to mitotic defects, centromere dysfunction and chromosomal instability (CIN), a hallmark of cancer. CENP-A overexpression is often accompanied by overexpression of its chaperone Holliday Junction Recognition Protein (HJURP), leading to epigenetic addiction in which increased levels of HJURP and CENP-A become necessary to support rapidly dividing p53 deficient cancer cells. Alterations in CENP-A posttranslational modifications are also linked to chromosome segregation errors and CIN. Collectively, CENP-A is pivotal to genomic stability through centromere maintenance, perturbation of which can lead to tumorigenesis.
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Affiliation(s)
- Megan A. Mahlke
- UPMC Hillman Cancer Center, Pittsburgh, PA 15213, USA;
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Yael Nechemia-Arbely
- UPMC Hillman Cancer Center, Pittsburgh, PA 15213, USA;
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Correspondence: ; Tel.: +1-412-623-3228; Fax: +1-412-623-7828
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Saha AK, Contreras-Galindo R, Niknafs YS, Iyer M, Qin T, Padmanabhan K, Siddiqui J, Palande M, Wang C, Qian B, Ward E, Tang T, Tomlins SA, Gitlin SD, Sartor MA, Omenn GS, Chinnaiyan AM, Markovitz DM. The role of the histone H3 variant CENPA in prostate cancer. J Biol Chem 2020; 295:8537-8549. [PMID: 32371391 PMCID: PMC7307189 DOI: 10.1074/jbc.ra119.010080] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 04/14/2020] [Indexed: 01/26/2023] Open
Abstract
Overexpression of centromeric proteins has been identified in a number of human malignancies, but the functional and mechanistic contributions of these proteins to disease progression have not been characterized. The centromeric histone H3 variant centromere protein A (CENPA) is an epigenetic mark that determines centromere identity. Here, using an array of approaches, including RNA-sequencing and ChIP-sequencing analyses, immunohistochemistry-based tissue microarrays, and various cell biology assays, we demonstrate that CENPA is highly overexpressed in prostate cancer in both tissue and cell lines and that the level of CENPA expression correlates with the disease stage in a large cohort of patients. Gain-of-function and loss-of-function experiments confirmed that CENPA promotes prostate cancer cell line growth. The results from the integrated sequencing experiments suggested a previously unidentified function of CENPA as a transcriptional regulator that modulates expression of critical proliferation, cell-cycle, and centromere/kinetochore genes. Taken together, our findings show that CENPA overexpression is crucial to prostate cancer growth.
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Affiliation(s)
- Anjan K Saha
- Medical Scientist Training Program, University of Michigan, Ann Arbor, Michigan, USA.,Program in Cancer Biology, University of Michigan, Ann Arbor, Michigan, USA.,Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | | | - Yashar S Niknafs
- Medical Scientist Training Program, University of Michigan, Ann Arbor, Michigan, USA.,Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, Michigan, USA.,Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Matthew Iyer
- Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, Michigan, USA.,Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan, USA
| | - Tingting Qin
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan, USA
| | - Karthik Padmanabhan
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan, USA
| | - Javed Siddiqui
- Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, Michigan, USA.,Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Monica Palande
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Claire Wang
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Brian Qian
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Elizabeth Ward
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Tara Tang
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Scott A Tomlins
- Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, Michigan, USA.,Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Scott D Gitlin
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Maureen A Sartor
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan, USA
| | - Gilbert S Omenn
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA.,Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan, USA.,Department of Human Genetics, University of Michigan, Ann Arbor, Michigan, USA
| | - Arul M Chinnaiyan
- Program in Cancer Biology, University of Michigan, Ann Arbor, Michigan, USA.,Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, Michigan, USA.,Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, Michigan, USA.,Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan, USA.,Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA.,Howard Hughes Medical Institute, University of Michigan, Ann Arbor, Michigan, USA
| | - David M Markovitz
- Program in Cancer Biology, University of Michigan, Ann Arbor, Michigan, USA .,Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA.,Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, Michigan, USA.,Program in Immunology, University of Michigan, Ann Arbor, Michigan, USA
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Deposition of Centromeric Histone H3 Variant CENP-A/Cse4 into Chromatin Is Facilitated by Its C-Terminal Sumoylation. Genetics 2020; 214:839-854. [PMID: 32111629 DOI: 10.1534/genetics.120.303090] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 02/26/2020] [Indexed: 12/13/2022] Open
Abstract
Centromeric localization of CENP-A (Cse4 in Saccharomyces cerevisiae, CID in flies, CENP-A in humans) is essential for faithful chromosome segregation. Mislocalization of overexpressed CENP-A contributes to aneuploidy in yeast, flies, and humans, and is proposed to promote tumorigenesis in human cancers. Hence, defining molecular mechanisms that promote or prevent mislocalization of CENP-A is an area of active investigation. In budding yeast, evolutionarily conserved histone chaperones Scm3 and chromatin assembly factor-1 (CAF-1) promote localization of Cse4 to centromeric and noncentromeric regions, respectively. Ubiquitin ligases, such as Psh1 and Slx5, and histone chaperones (HIR complex) regulate proteolysis of overexpressed Cse4 and prevent its mislocalization to noncentromeric regions. In this study, we have identified sumoylation sites lysine (K) 215/216 in the C terminus of Cse4, and shown that sumoylation of Cse4 K215/216 facilitates its genome-wide deposition into chromatin when overexpressed. Our results showed reduced levels of sumoylation of mutant Cse4 K215/216R/A [K changed to arginine (R) or alanine (A)] and reduced interaction of mutant Cse4 K215/216R/A with Scm3 and CAF-1 when compared to wild-type Cse4 Consistent with these results, levels of Cse4 K215/216R/A in the chromatin fraction and localization to centromeric and noncentromeric regions were reduced. Furthermore, in contrast to GAL- CSE4, which exhibits Synthetic Dosage Lethality (SDL) in psh1∆, slx5∆, and hir2∆ strains, GAL- cse4 K215/216R does not exhibit SDL in these strains. Taken together, our results show that deposition of Cse4 into chromatin is facilitated by its C-terminal sumoylation.
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Au WC, Zhang T, Mishra PK, Eisenstatt JR, Walker RL, Ocampo J, Dawson A, Warren J, Costanzo M, Baryshnikova A, Flick K, Clark DJ, Meltzer PS, Baker RE, Myers C, Boone C, Kaiser P, Basrai MA. Skp, Cullin, F-box (SCF)-Met30 and SCF-Cdc4-Mediated Proteolysis of CENP-A Prevents Mislocalization of CENP-A for Chromosomal Stability in Budding Yeast. PLoS Genet 2020; 16:e1008597. [PMID: 32032354 PMCID: PMC7032732 DOI: 10.1371/journal.pgen.1008597] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 02/20/2020] [Accepted: 01/03/2020] [Indexed: 12/20/2022] Open
Abstract
Restricting the localization of the histone H3 variant CENP-A (Cse4 in yeast, CID in flies) to centromeres is essential for faithful chromosome segregation. Mislocalization of CENP-A leads to chromosomal instability (CIN) in yeast, fly and human cells. Overexpression and mislocalization of CENP-A has been observed in many cancers and this correlates with increased invasiveness and poor prognosis. Yet genes that regulate CENP-A levels and localization under physiological conditions have not been defined. In this study we used a genome-wide genetic screen to identify essential genes required for Cse4 homeostasis to prevent its mislocalization for chromosomal stability. We show that two Skp, Cullin, F-box (SCF) ubiquitin ligases with the evolutionarily conserved F-box proteins Met30 and Cdc4 interact and cooperatively regulate proteolysis of endogenous Cse4 and prevent its mislocalization for faithful chromosome segregation under physiological conditions. The interaction of Met30 with Cdc4 is independent of the D domain, which is essential for their homodimerization and ubiquitination of other substrates. The requirement for both Cdc4 and Met30 for ubiquitination is specifc for Cse4; and a common substrate for Cdc4 and Met30 has not previously been described. Met30 is necessary for the interaction between Cdc4 and Cse4, and defects in this interaction lead to stabilization and mislocalization of Cse4, which in turn contributes to CIN. We provide the first direct link between Cse4 mislocalization to defects in kinetochore structure and show that SCF-mediated proteolysis of Cse4 is a major mechanism that prevents stable maintenance of Cse4 at non-centromeric regions, thus ensuring faithful chromosome segregation. In summary, we have identified essential pathways that regulate cellular levels of endogenous Cse4 and shown that proteolysis of Cse4 by SCF-Met30/Cdc4 prevents mislocalization and CIN in unperturbed cells. Genetic material on each chromosome must be faithfully transmitted to the daughter cell during cell division and chromosomal instability (CIN) results in aneuploidy, a hallmark of cancers. The kinetochore (centromeric DNA and associated proteins) regulates faithful chromosome segregation. Restricting the localization of CENP-A (Cse4 in yeast) to kinetochores is essential for chromosomal stability. Mislocalization of CENP-A contributes to CIN in yeast, fly and human cells and is observed in cancers where it correlates with increased invasiveness and poor prognosis. Hence, identification of pathways that regulate CENP-A levels will help us understand the correlation between CENP-A mislocalization and aneuploidy in cancers. We used a genetic screen to identify essential genes for Cse4 homeostasis and identified a major ubiquitin-dependent pathway where both nuclear F-box proteins, Met30 and Cdc4 of the SCF complex, cooperatively regulate proteolysis of Cse4 to prevent its mislocalization and CIN under physiological conditions. Our studies define a role for SCF-mediated proteolysis of Cse4 as a critical mechanism to ensure faithful chromosome segregation. These studies are significant because mutations in human homologs of Met30 (β-TrCP) and Cdc4 (Fbxw7) have been implicated in cancers, and future studies will determine if SCF-mediated proteolysis of CENP-A prevents its mislocalization for chromosomal stability in human cells.
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Affiliation(s)
- Wei-Chun Au
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States of America
| | - Tianyi Zhang
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States of America
| | - Prashant K. Mishra
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States of America
| | - Jessica R. Eisenstatt
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States of America
| | - Robert L. Walker
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States of America
| | - Josefina Ocampo
- Division of Developmental Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, United States of America
| | - Anthony Dawson
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States of America
| | - Jack Warren
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States of America
| | - Michael Costanzo
- Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, ON, Canada
| | | | - Karin Flick
- Department of Biological Chemistry, College of Medicine, University of California, Irvine, CA, United States of America
| | - David J. Clark
- Division of Developmental Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, United States of America
| | - Paul S. Meltzer
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States of America
| | - Richard E. Baker
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA, United States of America
| | - Chad Myers
- Department of Computer Science and Engineering, University of Minnesota-Twin Cities, Minneapolis, MN, United States of America
| | - Charles Boone
- Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, ON, Canada
| | - Peter Kaiser
- Department of Biological Chemistry, College of Medicine, University of California, Irvine, CA, United States of America
| | - Munira A. Basrai
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States of America
- * E-mail:
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Dong S, Liang J, Zhai W, Yu Z. Common and distinct features of potentially predictive biomarkers in small cell lung carcinoma and large cell neuroendocrine carcinoma of the lung by systematic and integrated analysis. Mol Genet Genomic Med 2020; 8:e1126. [PMID: 31981472 PMCID: PMC7057089 DOI: 10.1002/mgg3.1126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 12/10/2019] [Accepted: 01/02/2020] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Large-cell neuroendocrine carcinoma of the lung (LCNEC) and small-cell lung carcinoma (SCLC) are neuroendocrine neoplasms. However, the underlying mechanisms of common and distinct genetic characteristics between LCNEC and SCLC are currently unclear. Herein, protein expression profiles and possible interactions with miRNAs were provided by integrated bioinformatics analysis, in order to explore core genes associated with tumorigenesis and prognosis in SCLC and LCNEC. METHODS GSE1037 gene expression profiles were obtained from the Gene Expression Omnibus (GEO) database. Differentially expressed genes (DEGs) in LCNEC and SCLC, as compared with normal lung tissues, were selected using the GEO2R online analyzer and Venn diagram software. Gene ontology (GO) analysis was performed using Database for Annotation, Visualization and Integrated Discovery. The biological pathway analysis was performed using the FunRich database. Subsequently, a protein-protein interaction (PPI) network of DEGs was generated using Search Tool for the Retrieval of Interacting Genes and displayed via Cytoscape software. The PPI network was analyzed by the Molecular Complex Detection app from Cytoscape, and 16 upregulated hub genes were selected. The Oncomine database was used to detect expression patterns of hub genes for validation. Furthermore, the biological pathways of these 16 hub genes were re-analyzed, and potential interactions between these genes and miRNAs were explored via FunRich. RESULTS A total of 384 DEGs were identified. A Venn diagram determined 88 common DEGs. The PPI network was constructed with 48 nodes and 221 protein pairs. Among them, 16 hub genes were extracted, 14 of which were upregulated in SCLC samples, as compared with normal lung specimens, and 10 were correlated with the cell cycle pathway. Furthermore, 57 target miRNAs for 8 hub genes were identified, among which 31 miRNAs were correlated with the progression of carcinoma, drug-resistance, radio-sensitivity, or autophagy in lung cancer. CONCLUSION This study provided effective biomarkers and novel therapeutic targets for diagnosis and prognosis of SCLC and LCNEC.
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Affiliation(s)
- Shenghua Dong
- Department of Oncology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Jun Liang
- Department of Oncology, Peking University International Hospital, Beijing, China
| | - Wenxin Zhai
- Department of Oncology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Zhuang Yu
- Department of Oncology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
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Zhang Y, Yang L, Shi J, Lu Y, Chen X, Yang Z. The Oncogenic Role of CENPA in Hepatocellular Carcinoma Development: Evidence from Bioinformatic Analysis. BIOMED RESEARCH INTERNATIONAL 2020; 2020:3040839. [PMID: 32337237 PMCID: PMC7168693 DOI: 10.1155/2020/3040839] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 03/14/2020] [Accepted: 03/20/2020] [Indexed: 02/08/2023]
Abstract
OBJECTIVE This study is aimed at investigating the predictive value of CENPA in hepatocellular carcinoma (HCC) development. METHODS Using integrated bioinformatic analysis, we evaluated the CENPA mRNA expression in tumor and adjacent tissues and correlated it with HCC survival and clinicopathological features. A Cox regression hazard model was also performed. RESULTS CENPA mRNA was significantly upregulated in tumor tissues compared with that in adjacent tissues, which were validated in The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) series (all P < 0.01). In the Kaplan-Meier plotter platform, the high level of CENPA mRNA was significantly correlated with overall survival (OS), disease-free survival (DFS), recurrence-free survival (RFS), and progression-free survival (PFS) in HCC patients (all log rank P < 0.01). For validation in GSE14520 and pan-TCGA dataset, HCC patients with CNEPA mRNA overexpression had poor OS compared with those with low CENPA mRNA (log rank P = 0.025 and P < 0.0001, respectively), and those with high CENPA had poor DFS in TCGA (log rank P = 0.0001). Additionally, CENPA mRNA were upregulated in HCC patients with alpha-fetoprotein (AFP) elevation, advanced TNM stage, larger tumor size, advanced AJCC stage, advanced pathology grade, and vascular invasion (all P < 0.05). A Cox regression model including CENPA, OIP5, and AURKB could predict OS in HCC patients effectively (AUC = 0.683). CONCLUSION Overexpressed in tumors, CENPA might be an oncogenic factor in the development of HCC patients.
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Affiliation(s)
- Yuan Zhang
- 1Department of Integrative Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Lei Yang
- 2Department of Acupuncture and Moxibustion, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100007, China
| | - Jia Shi
- 1Department of Integrative Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Yunfei Lu
- 1Department of Integrative Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Xiaorong Chen
- 1Department of Integrative Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Zongguo Yang
- 1Department of Integrative Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
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Moreno-Moreno O, Torras-Llort M, Azorin F. The E3-ligases SCFPpa and APC/CCdh1 co-operate to regulate CENP-ACID expression across the cell cycle. Nucleic Acids Res 2019; 47:3395-3406. [PMID: 30753559 PMCID: PMC6468245 DOI: 10.1093/nar/gkz060] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 01/22/2019] [Accepted: 01/25/2019] [Indexed: 12/22/2022] Open
Abstract
Centromere identity is determined by the specific deposition of CENP-A, a histone H3 variant localizing exclusively at centromeres. Increased CENP-A expression, which is a frequent event in cancer, causes mislocalization, ectopic kinetochore assembly and genomic instability. Proteolysis regulates CENP-A expression and prevents its misincorporation across chromatin. How proteolysis restricts CENP-A localization to centromeres is not well understood. Here we report that, in Drosophila, CENP-ACID expression levels are regulated throughout the cell cycle by the combined action of SCFPpa and APC/CCdh1. We show that SCFPpa regulates CENP-ACID expression in G1 and, importantly, in S-phase preventing its promiscuous incorporation across chromatin during replication. In G1, CENP-ACID expression is also regulated by APC/CCdh1. We also show that Cal1, the specific chaperone that deposits CENP-ACID at centromeres, protects CENP-ACID from SCFPpa-mediated degradation but not from APC/CCdh1-mediated degradation. These results suggest that, whereas SCFPpa targets the fraction of CENP-ACID that is not in complex with Cal1, APC/CCdh1 mediates also degradation of the Cal1-CENP-ACID complex and, thus, likely contributes to the regulation of centromeric CENP-ACID deposition.
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Affiliation(s)
- Olga Moreno-Moreno
- Institute of Molecular Biology of Barcelona, IBMB, CSIC. Baldiri Reixac 4. 08028 Barcelona, Spain.,Institute for Research in Biomedicine, IRB Barcelona. The Barcelona Institute for Science and Technology. Baldiri Reixac 10, 08028 Barcelona, Spain
| | - Mònica Torras-Llort
- Institute of Molecular Biology of Barcelona, IBMB, CSIC. Baldiri Reixac 4. 08028 Barcelona, Spain.,Institute for Research in Biomedicine, IRB Barcelona. The Barcelona Institute for Science and Technology. Baldiri Reixac 10, 08028 Barcelona, Spain
| | - Fernando Azorin
- Institute of Molecular Biology of Barcelona, IBMB, CSIC. Baldiri Reixac 4. 08028 Barcelona, Spain.,Institute for Research in Biomedicine, IRB Barcelona. The Barcelona Institute for Science and Technology. Baldiri Reixac 10, 08028 Barcelona, Spain
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Sharma AB, Dimitrov S, Hamiche A, Van Dyck E. Centromeric and ectopic assembly of CENP-A chromatin in health and cancer: old marks and new tracks. Nucleic Acids Res 2019; 47:1051-1069. [PMID: 30590707 PMCID: PMC6379705 DOI: 10.1093/nar/gky1298] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 12/13/2018] [Accepted: 12/18/2018] [Indexed: 12/20/2022] Open
Abstract
The histone H3 variant CENP-A confers epigenetic identity to the centromere and plays crucial roles in the assembly and function of the kinetochore, thus ensuring proper segregation of our chromosomes. CENP-A containing nucleosomes exhibit unique structural specificities and lack the complex profile of gene expression-associated histone posttranslational modifications found in canonical histone H3 and the H3.3 variant. CENP-A mislocalization into noncentromeric regions resulting from its overexpression leads to chromosomal segregation aberrations and genome instability. Overexpression of CENP-A is a feature of many cancers and is associated with malignant progression and poor outcome. The recent years have seen impressive progress in our understanding of the mechanisms that orchestrate CENP-A deposition at native centromeres and ectopic loci. They have witnessed the description of novel, heterotypic CENP-A/H3.3 nucleosome particles and the exploration of the phenotypes associated with the deregulation of CENP-A and its chaperones in tumor cells. Here, we review the structural specificities of CENP-A nucleosomes, the epigenetic features that characterize the centrochromatin and the mechanisms and factors that orchestrate CENP-A deposition at centromeres. We then review our knowledge of CENP-A ectopic distribution, highlighting experimental strategies that have enabled key discoveries. Finally, we discuss the implications of deregulated CENP-A in cancer.
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Affiliation(s)
- Abhishek Bharadwaj Sharma
- NORLUX Neuro-Oncology Laboratory, Department of Oncology, Luxembourg Institute of Health (LIH), 84 Val Fleuri, L-1526 Luxembourg, Luxembourg
| | - Stefan Dimitrov
- Université Grenoble Alpes, CNRS UMR 5309, INSERM U1209, Institute for Advanced Biosciences (IAB), Site Santé-Allée des Alpes, 38700 La Tronche, France.,Izmir Biomedicine and Genome Center, İzmir, Turkey
| | - Ali Hamiche
- Département de Génomique Fonctionnelle et Cancer, Institut de Génétique et Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg, CNRS, INSERM, 67404 Illkirch Cedex, France
| | - Eric Van Dyck
- NORLUX Neuro-Oncology Laboratory, Department of Oncology, Luxembourg Institute of Health (LIH), 84 Val Fleuri, L-1526 Luxembourg, Luxembourg
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40
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Tan HL, Lim KK, Yang Q, Fan JS, Sayed AMM, Low LS, Ren B, Lim TK, Lin Q, Mok YK, Liou YC, Chen ES. Prolyl isomerization of the CENP-A N-terminus regulates centromeric integrity in fission yeast. Nucleic Acids Res 2019; 46:1167-1179. [PMID: 29194511 DOI: 10.1093/nar/gkx1180] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 11/22/2017] [Indexed: 01/15/2023] Open
Abstract
Centromeric identity and chromosome segregation are determined by the precise centromeric targeting of CENP-A, the centromere-specific histone H3 variant. The significance of the amino-terminal domain (NTD) of CENP-A in this process remains unclear. Here, we assessed the functional significance of each residue within the NTD of CENP-A from Schizosaccharomyces pombe (SpCENP-A) and identified a proline-rich 'GRANT' (Genomic stability-Regulating site within CENP-A N-Terminus) motif that is important for CENP-A function. Through sequential mutagenesis, we show that GRANT proline residues are essential for coordinating SpCENP-A centromeric targeting. GRANT proline-15 (P15), in particular, undergoes cis-trans isomerization to regulate chromosome segregation fidelity, which appears to be carried out by two FK506-binding protein (FKBP) family prolyl cis-trans isomerases. Using proteomics analysis, we further identified the SpCENP-A-localizing chaperone Sim3 as a SpCENP-A NTD interacting protein that is dependent on GRANT proline residues. Ectopic expression of sim3+ complemented the chromosome segregation defect arising from the loss of these proline residues. Overall, cis-trans proline isomerization is a post-translational modification of the SpCENP-A NTD that confers precise propagation of centromeric integrity in fission yeast, presumably via targeting SpCENP-A to the centromere.
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Affiliation(s)
- Hwei Ling Tan
- Department of Biochemistry, National University of Singapore, 117597 Singapore
- National University Health System (NUHS), Singapore, 119228 Singapore
| | - Kim Kiat Lim
- Department of Biochemistry, National University of Singapore, 117597 Singapore
- National University Health System (NUHS), Singapore, 119228 Singapore
| | - Qiaoyun Yang
- Department of Biological Sciences, National University of Singapore, 117543 Singapore
| | - Jing-Song Fan
- Department of Biological Sciences, National University of Singapore, 117543 Singapore
| | | | - Liy Sim Low
- Department of Biochemistry, National University of Singapore, 117597 Singapore
- National University Health System (NUHS), Singapore, 119228 Singapore
| | - Bingbing Ren
- Department of Biochemistry, National University of Singapore, 117597 Singapore
- National University Health System (NUHS), Singapore, 119228 Singapore
| | - Teck Kwang Lim
- Department of Biological Sciences, National University of Singapore, 117543 Singapore
| | - Qingsong Lin
- Department of Biological Sciences, National University of Singapore, 117543 Singapore
| | - Yu-Keung Mok
- Department of Biological Sciences, National University of Singapore, 117543 Singapore
| | - Yih-Cherng Liou
- Department of Biological Sciences, National University of Singapore, 117543 Singapore
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, 117456 Singapore
| | - Ee Sin Chen
- Department of Biochemistry, National University of Singapore, 117597 Singapore
- National University Health System (NUHS), Singapore, 119228 Singapore
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, 117456 Singapore
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41
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Kaowinn S, Seo EJ, Heo W, Bae JH, Park EJ, Lee S, Kim YJ, Koh SS, Jang IH, Shin DH, Chung YH. Cancer upregulated gene 2 (CUG2), a novel oncogene, promotes stemness-like properties via the NPM1-TGF-β signaling axis. Biochem Biophys Res Commun 2019; 514:1278-1284. [DOI: 10.1016/j.bbrc.2019.05.091] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 05/12/2019] [Indexed: 01/18/2023]
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Oka N, Kasamatsu A, Endo-Sakamoto Y, Eizuka K, Wagai S, Koide-Ishida N, Miyamoto I, Iyoda M, Tanzawa H, Uzawa K. Centromere Protein N Participates in Cellular Proliferation of Human Oral Cancer by Cell-Cycle Enhancement. J Cancer 2019; 10:3728-3734. [PMID: 31333790 PMCID: PMC6636300 DOI: 10.7150/jca.32281] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 05/11/2019] [Indexed: 12/25/2022] Open
Abstract
Centromere protein N (CENP-N), an important member of the centromere protein family, is essential for kinetochore assembly and chromosome segregation; however, the relevance of CENP-N in cancers remains unknown. The aim of this study was to investigate CENP-N expression and its functional mechanisms in oral squamous cell carcinoma (OSCC). CENP-N expression was up-regulated significantly in vitro and in vivo in OSCCs. Overexpressed CENP-N was closely (p < 0.05) correlated with tumor growth using quantitative reverse transcriptase-polymerase chain reaction, immunoblot analysis, and immunohistochemistry. CENP-N knockdown (shCENP-N) cells showed depressed cellular proliferation by cell-cycle arrest at the G1 phase with up-regulation of p21Cip1 and p27Kip1 and down-regulation of cyclin D1, CDK2, and CDK4. Interestingly, we newly discovered that calcitriol (1, 25-dihydroxyvitamin D3) controlled the CENP-N expression level, leading to inhibition of tumor growth similar to shCENP-N cells. These results suggested that CENP-N plays a critical role in determining proliferation of OSCCs and that calcitriol might be a novel therapeutic drug for OSCCs by regulating CENP-N.
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Affiliation(s)
- Noritoshi Oka
- Department of Oral Science, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Atsushi Kasamatsu
- Department of Dentistry and Oral-Maxillofacial Surgery, Chiba University Hospital, Chiba, Japan
| | - Yosuke Endo-Sakamoto
- Department of Dentistry and Oral-Maxillofacial Surgery, Chiba University Hospital, Chiba, Japan
| | - Keitaro Eizuka
- Department of Oral Science, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Sho Wagai
- Department of Oral Science, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Nao Koide-Ishida
- Department of Dentistry and Oral-Maxillofacial Surgery, Chiba University Hospital, Chiba, Japan
| | - Isao Miyamoto
- Department of Dentistry and Oral-Maxillofacial Surgery, Chiba University Hospital, Chiba, Japan
| | - Manabu Iyoda
- Department of Dentistry and Oral-Maxillofacial Surgery, Chiba University Hospital, Chiba, Japan
| | - Hideki Tanzawa
- Department of Oral Science, Graduate School of Medicine, Chiba University, Chiba, Japan.,Department of Dentistry and Oral-Maxillofacial Surgery, Chiba University Hospital, Chiba, Japan
| | - Katsuhiro Uzawa
- Department of Oral Science, Graduate School of Medicine, Chiba University, Chiba, Japan.,Department of Dentistry and Oral-Maxillofacial Surgery, Chiba University Hospital, Chiba, Japan
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43
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Wang J, Li H, Xia C, Yang X, Dai B, Tao K, Dou K. Downregulation of CENPK suppresses hepatocellular carcinoma malignant progression through regulating YAP1. Onco Targets Ther 2019; 12:869-882. [PMID: 30774374 PMCID: PMC6357898 DOI: 10.2147/ott.s190061] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Background Several studies have found that centromere protein K (CENPK) is overexpressed in several tumour types and promotes tumor progression. However, there has been little research on the role of CENPK in the progression of hepatocellular carcinoma (HCC). Materials and methods The expression of CENPK in HCC tissues was quantified by Western blot and quantitative real-time PCR. Cells were transfected with lentiviral plasmids containing shRNA sequences targeting CENPK and YAP1 to silence the expression of CENPK and YAP1. Cell Counting Kit-8 assay, colony formation assay, wound healing assay, and transwell invasion assay were performed to evaluate cell growth, migration, and invasion of HCC cells. Tumorigenicity assay was used to detect the effect of CENPK on the growth of HCC cells. Western blot assay was performed to investigate the expression of epithelial-mesenchymal transition (EMT) markers and YAP1. Results Compared to that in adjacent non-tumor tissues, CENPK was aberrantly upregulated in HCC tumor tissues. Furthermore, CENPK knockdown significantly inhibited proliferation, migration, invasion, and EMT progression in HCC cells. Mechanistically, we identified that YAP1 was responsible for the tumor-suppressive effects of CENPK knockdown in the HCC cells. The inhibitory effects of CENPK silencing on cell proliferation, migration, invasion, and EMT were partially reversed by the restoration of YAP1 expression. Conclusion Our results suggested that the CENPK-YAP1-EMT axis plays a critical role in regulating HCC malignant progression, indicating the role of this axis as a potential therapeutic target for HCC.
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Affiliation(s)
- Jianlin Wang
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China, ;
| | - Haimin Li
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China, ;
| | - Congcong Xia
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China, ;
| | - Xisheng Yang
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China, ;
| | - Bin Dai
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China, ;
| | - Kaishan Tao
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China, ;
| | - Kefeng Dou
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China, ;
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44
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Pritchard AL. The Role of Histone Variants in Cancer. Clin Epigenetics 2019. [DOI: 10.1007/978-981-13-8958-0_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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45
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Black EM, Giunta S. Repetitive Fragile Sites: Centromere Satellite DNA As a Source of Genome Instability in Human Diseases. Genes (Basel) 2018; 9:E615. [PMID: 30544645 PMCID: PMC6315641 DOI: 10.3390/genes9120615] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 12/03/2018] [Accepted: 12/03/2018] [Indexed: 12/31/2022] Open
Abstract
Maintenance of an intact genome is essential for cellular and organismal homeostasis. The centromere is a specialized chromosomal locus required for faithful genome inheritance at each round of cell division. Human centromeres are composed of large tandem arrays of repetitive alpha-satellite DNA, which are often sites of aberrant rearrangements that may lead to chromosome fusions and genetic abnormalities. While the centromere has an essential role in chromosome segregation during mitosis, the long and repetitive nature of the highly identical repeats has greatly hindered in-depth genetic studies, and complete annotation of all human centromeres is still lacking. Here, we review our current understanding of human centromere genetics and epigenetics as well as recent investigations into the role of centromere DNA in disease, with a special focus on cancer, aging, and human immunodeficiency⁻centromeric instability⁻facial anomalies (ICF) syndrome. We also highlight the causes and consequences of genomic instability at these large repetitive arrays and describe the possible sources of centromere fragility. The novel connection between alpha-satellite DNA instability and human pathological conditions emphasizes the importance of obtaining a truly complete human genome assembly and accelerating our understanding of centromere repeats' role in physiology and beyond.
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Affiliation(s)
- Elizabeth M Black
- Laboratory of Chromosome and Cell Biology, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA.
| | - Simona Giunta
- Laboratory of Chromosome and Cell Biology, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA.
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46
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Nye J, Sturgill D, Athwal R, Dalal Y. HJURP antagonizes CENP-A mislocalization driven by the H3.3 chaperones HIRA and DAXX. PLoS One 2018; 13:e0205948. [PMID: 30365520 PMCID: PMC6203356 DOI: 10.1371/journal.pone.0205948] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 10/03/2018] [Indexed: 02/07/2023] Open
Abstract
The centromere specific histone H3 variant CENP-A/CENH3 specifies where the kinetochore is formed in most eukaryotes. Despite tight regulation of CENP-A levels in normal cells, overexpression of CENP-A is a feature shared by various types of solid tumors and results in its mislocalization to non-centromeric DNA. How CENP-A is assembled ectopically and the consequences of this mislocalization remain topics of high interest. Here, we report that in human colon cancer cells, the H3.3 chaperones HIRA and DAXX promote ectopic CENP-A deposition. Moreover, the correct balance between levels of the centromeric chaperone HJURP and CENP-A is essential to preclude ectopic assembly by H3.3 chaperones. In addition, we find that ectopic localization can recruit kinetochore components, and correlates with mitotic defects and DNA damage in G1 phase. Finally, CENP-A occupancy at the 8q24 locus is also correlated with amplification and overexpression of the MYC gene within that locus. Overall, these data provide insights into the causes and consequences of histone variant mislocalization in human cancer cells.
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Affiliation(s)
- Jonathan Nye
- Chromatin Structure and Epigenetics Mechanisms Unit, Center for Cancer Research, National Cancer Institute National Institutes of Health, Bethesda, MD, United States of America
| | - David Sturgill
- Chromatin Structure and Epigenetics Mechanisms Unit, Center for Cancer Research, National Cancer Institute National Institutes of Health, Bethesda, MD, United States of America
| | - Rajbir Athwal
- Chromatin Structure and Epigenetics Mechanisms Unit, Center for Cancer Research, National Cancer Institute National Institutes of Health, Bethesda, MD, United States of America
| | - Yamini Dalal
- Chromatin Structure and Epigenetics Mechanisms Unit, Center for Cancer Research, National Cancer Institute National Institutes of Health, Bethesda, MD, United States of America
- * E-mail:
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47
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Barra V, Fachinetti D. The dark side of centromeres: types, causes and consequences of structural abnormalities implicating centromeric DNA. Nat Commun 2018; 9:4340. [PMID: 30337534 PMCID: PMC6194107 DOI: 10.1038/s41467-018-06545-y] [Citation(s) in RCA: 162] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 09/06/2018] [Indexed: 12/18/2022] Open
Abstract
Centromeres are the chromosomal domains required to ensure faithful transmission of the genome during cell division. They have a central role in preventing aneuploidy, by orchestrating the assembly of several components required for chromosome separation. However, centromeres also adopt a complex structure that makes them susceptible to being sites of chromosome rearrangements. Therefore, preservation of centromere integrity is a difficult, but important task for the cell. In this review, we discuss how centromeres could potentially be a source of genome instability and how centromere aberrations and rearrangements are linked with human diseases such as cancer.
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Affiliation(s)
- V Barra
- Institut Curie, PSL Research University, CNRS, UMR 144, 26 rue d'Ulm, F-75005, Paris, France
| | - D Fachinetti
- Institut Curie, PSL Research University, CNRS, UMR 144, 26 rue d'Ulm, F-75005, Paris, France.
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48
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Mendiratta S, Gatto A, Almouzni G. Histone supply: Multitiered regulation ensures chromatin dynamics throughout the cell cycle. J Cell Biol 2018; 218:39-54. [PMID: 30257851 PMCID: PMC6314538 DOI: 10.1083/jcb.201807179] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 09/05/2018] [Accepted: 09/12/2018] [Indexed: 12/14/2022] Open
Abstract
Mendiratta et al. review the interplay between the different regulatory layers that affect the transcription and dynamics of distinct histone H3 variants along the cell cycle. As the building blocks of chromatin, histones are central to establish and maintain particular chromatin states associated with given cell fates. Importantly, histones exist as distinct variants whose expression and incorporation into chromatin are tightly regulated during the cell cycle. During S phase, specialized replicative histone variants ensure the bulk of the chromatinization of the duplicating genome. Other non-replicative histone variants deposited throughout the cell cycle at specific loci use pathways uncoupled from DNA synthesis. Here, we review the particular dynamics of expression, cellular transit, assembly, and disassembly of replicative and non-replicative forms of the histone H3. Beyond the role of histone variants in chromatin dynamics, we review our current knowledge concerning their distinct regulation to control their expression at different levels including transcription, posttranscriptional processing, and protein stability. In light of this unique regulation, we highlight situations where perturbations in histone balance may lead to cellular dysfunction and pathologies.
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Affiliation(s)
- Shweta Mendiratta
- Institut Curie, Paris Sciences et Lettres Research University, Centre National de la Recherche Scientifique, UMR3664, Equipe Labellisée Ligue contre le Cancer, Paris, France.,Sorbonne Universités, Université Pierre et Marie Curie Paris 06, Centre National de la Recherche Scientifique, UMR3664, Paris, France
| | - Alberto Gatto
- Institut Curie, Paris Sciences et Lettres Research University, Centre National de la Recherche Scientifique, UMR3664, Equipe Labellisée Ligue contre le Cancer, Paris, France.,Sorbonne Universités, Université Pierre et Marie Curie Paris 06, Centre National de la Recherche Scientifique, UMR3664, Paris, France
| | - Genevieve Almouzni
- Institut Curie, Paris Sciences et Lettres Research University, Centre National de la Recherche Scientifique, UMR3664, Equipe Labellisée Ligue contre le Cancer, Paris, France .,Sorbonne Universités, Université Pierre et Marie Curie Paris 06, Centre National de la Recherche Scientifique, UMR3664, Paris, France
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49
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Srivastava S, Foltz DR. Posttranslational modifications of CENP-A: marks of distinction. Chromosoma 2018; 127:279-290. [PMID: 29569072 PMCID: PMC6082721 DOI: 10.1007/s00412-018-0665-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 02/27/2018] [Accepted: 02/28/2018] [Indexed: 02/06/2023]
Abstract
Centromeres are specialized chromosome domain that serve as the site for kinetochore assembly and microtubule attachment during cell division, to ensure proper segregation of chromosomes. In higher eukaryotes, the identity of active centromeres is marked by the presence of CENP-A (centromeric protein-A), a histone H3 variant. CENP-A forms a centromere-specific nucleosome that acts as a foundation for centromere assembly and function. The posttranslational modification (PTM) of histone proteins is a major mechanism regulating the function of chromatin. While a few CENP-A site-specific modifications are shared with histone H3, the majority are specific to CENP-A-containing nucleosomes, indicating that modification of these residues contribute to centromere-specific function. CENP-A undergoes posttranslational modifications including phosphorylation, acetylation, methylation, and ubiquitylation. Work from many laboratories have uncovered the importance of these CENP-A modifications in its deposition at centromeres, protein stability, and recruitment of the CCAN (constitutive centromere-associated network). Here, we discuss the PTMs of CENP-A and their biological relevance.
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Affiliation(s)
- Shashank Srivastava
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Daniel R Foltz
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA.
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA.
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Wei DM, Chen WJ, Meng RM, Zhao N, Zhang XY, Liao DY, Chen G. Augmented expression of Ki-67 is correlated with clinicopathological characteristics and prognosis for lung cancer patients: an up-dated systematic review and meta-analysis with 108 studies and 14,732 patients. Respir Res 2018; 19:150. [PMID: 30103737 PMCID: PMC6088431 DOI: 10.1186/s12931-018-0843-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 07/13/2018] [Indexed: 02/08/2023] Open
Abstract
Background Lung cancer ranks as the leading cause of cancer-related deaths worldwide and we performed this meta-analysis to investigate eligible studies and determine the prognostic effect of Ki-67. Methods In total, 108 studies in 95 articles with 14,732 patients were found to be eligible, of which 96 studies reported on overall survival (OS) and 19 studies reported on disease-free survival (DFS) with relation to Ki-67 expression in lung cancer patients. Results The pooled hazard ratio (HR) indicated that a high Ki-67 level could be a valuable prognostic factor for lung cancer (HR = 1.122 for OS, P < 0.001 and HR = 1.894 for DFS, P < 0.001). Subsequently, the results revealed that a high Ki-67 level was significantly associated with clinical parameters of lung cancer including age (odd ratio, OR = 1.246 for older patients, P = 0.018), gender (OR = 1.874 for males, P < 0.001) and smoking status (OR = 3.087 for smokers, P < 0.001). Additionally, significant positive correlations were found between Ki-67 overexpression and poorer differentiation (OR = 1.993, P = 0.003), larger tumor size (OR = 1.436, P = 0.003), and higher pathologic stages (OR = 1.867 for III-IV, P < 0.001). Furthermore, high expression of Ki-67 was found to be a valuable predictive factor for lymph node metastasis positive (OR = 1.653, P < 0.001) and advanced TNM stages (OR = 1.497 for stage III-IV, P = 0.024). Finally, no publication bias was detected in any of the analyses. Conclusions This study highlights that the high expression of Ki-67 is clinically relevant in terms of the prognostic and clinicopathological characteristics for lung cancer. Nevertheless, more prospective well-designed studies are warranted to validate these findings. Electronic supplementary material The online version of this article (10.1186/s12931-018-0843-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Dan-Ming Wei
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, 530021, People's Republic of China
| | - Wen-Jie Chen
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, 530021, People's Republic of China
| | - Rong-Mei Meng
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, 530021, People's Republic of China
| | - Na Zhao
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, 530021, People's Republic of China
| | - Xiang-Yu Zhang
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, 530021, People's Republic of China
| | - Dan-Yu Liao
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, 530021, People's Republic of China
| | - Gang Chen
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, 530021, People's Republic of China.
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