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Ying L, Hu Z, Lu Y, Tao Q, Xiong F, Shu Y, Yang Y, Qiao X, Peng C, Jiang Y, Han M, Xu M, Li X, Wang D. An oncogene regulating chromatin favors response to immunotherapy: Oncogene CHAF1A and immunotherapy outcomes. Oncoimmunology 2024; 13:2303195. [PMID: 38235318 PMCID: PMC10793680 DOI: 10.1080/2162402x.2024.2303195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 01/02/2024] [Indexed: 01/19/2024] Open
Abstract
Many biological processes related to cell function and fate begin with chromatin alterations, and many factors associated with the efficacy of immune checkpoint inhibitors (ICIs) are actually downstream events of chromatin alterations, such as genome changes, neoantigen production, and immune checkpoint expression. However, the influence of genes as chromatin regulators on the efficacy of ICIs remains elusive, especially in gastric cancer (GC). In this study, thirty out of 1593 genes regulating chromatin associated with a favorable prognosis were selected for GC. CHAF1A, a well-defined oncogene, was identified as the highest linkage hub gene. High CHAF1A expression were associated with microsatellite instability (MSI), high tumor mutation burden (TMB), high tumor neoantigen burden (TNB), high expressions of PD-L1 and immune effector genes, and live infiltration of immune cells. High CHAF1A expression indicated a favorable response and prognosis in immunotherapy of several cohorts, which was independent of MSI, TMB, TNB, PD-L1 expression, immune phenotype and transcriptome scoring, and improved patient selection based on these classic biomarkers. In vivo, CHAF1A knockdown alone inhibited tumor growth but it impaired the effect of an anti-PD-1 antibody by increasing the relative tumor proliferation rate and decreasing the survival benefit, potentially through the activation of TGF-β signaling. In conclusion, CHAF1A may be a novel biomarker for improving patient selection in immunotherapy.
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Affiliation(s)
- Leqian Ying
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, China
- Department of Oncology, Zhong-Da Hospital, Medicine School, Southeast University, Nanjing, China
| | - Zhangmin Hu
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Yi Lu
- Department of Oncology, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
| | - Qing Tao
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Fen Xiong
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Yongqian Shu
- Department of Oncology, Jiangsu Province Hospital & The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yufei Yang
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Xuehan Qiao
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Chen Peng
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Yuchun Jiang
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Miao Han
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Min Xu
- Department of Gastroenterology, Digestive Disease Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Xiaoqin Li
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Deqiang Wang
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, China
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Gopinathan Nair A, Rabas N, Lejon S, Homiski C, Osborne MJ, Cyr N, Sverzhinsky A, Melendy T, Pascal JM, Laue ED, Borden KLB, Omichinski JG, Verreault A. Unorthodox PCNA Binding by Chromatin Assembly Factor 1. Int J Mol Sci 2022; 23:ijms231911099. [PMID: 36232396 PMCID: PMC9570017 DOI: 10.3390/ijms231911099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 09/12/2022] [Accepted: 09/15/2022] [Indexed: 11/29/2022] Open
Abstract
The eukaryotic DNA replication fork is a hub of enzymes that continuously act to synthesize DNA, propagate DNA methylation and other epigenetic marks, perform quality control, repair nascent DNA, and package this DNA into chromatin. Many of the enzymes involved in these spatiotemporally correlated processes perform their functions by binding to proliferating cell nuclear antigen (PCNA). A long-standing question has been how the plethora of PCNA-binding enzymes exert their activities without interfering with each other. As a first step towards deciphering this complex regulation, we studied how Chromatin Assembly Factor 1 (CAF-1) binds to PCNA. We demonstrate that CAF-1 binds to PCNA in a heretofore uncharacterized manner that depends upon a cation-pi (π) interaction. An arginine residue, conserved among CAF-1 homologs but absent from other PCNA-binding proteins, inserts into the hydrophobic pocket normally occupied by proteins that contain canonical PCNA interaction peptides (PIPs). Mutation of this arginine disrupts the ability of CAF-1 to bind PCNA and to assemble chromatin. The PIP of the CAF-1 p150 subunit resides at the extreme C-terminus of an apparent long α-helix (119 amino acids) that has been reported to bind DNA. The length of that helix and the presence of a PIP at the C-terminus are evolutionarily conserved among numerous species, ranging from yeast to humans. This arrangement of a very long DNA-binding coiled-coil that terminates in PIPs may serve to coordinate DNA and PCNA binding by CAF-1.
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Affiliation(s)
- Amogh Gopinathan Nair
- Institute for Research in Immunology and Cancer, University of Montreal, Montreal, QC H3T 1J4, Canada
- Molecular Biology Program, University of Montreal, Montreal, QC H3T 1J4, Canada
- Correspondence: (A.G.N.); (A.V.)
| | - Nick Rabas
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge CB2 1GA, UK
| | - Sara Lejon
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge CB2 1GA, UK
| | - Caleb Homiski
- Departments of Biochemistry and Microbiology & Immunology, University at Buffalo Jacobs School of Medicine & Biomedical Sciences, 955 Main Street, Buffalo, NY 14210, USA
| | - Michael J. Osborne
- Institute for Research in Immunology and Cancer, University of Montreal, Montreal, QC H3T 1J4, Canada
| | - Normand Cyr
- Department of Biochemistry and Molecular Medicine, University of Montreal, Montreal, QC H3C 3J7, Canada
| | - Aleksandr Sverzhinsky
- Department of Biochemistry and Molecular Medicine, University of Montreal, Montreal, QC H3C 3J7, Canada
| | - Thomas Melendy
- Departments of Biochemistry and Microbiology & Immunology, University at Buffalo Jacobs School of Medicine & Biomedical Sciences, 955 Main Street, Buffalo, NY 14210, USA
| | - John M. Pascal
- Department of Biochemistry and Molecular Medicine, University of Montreal, Montreal, QC H3C 3J7, Canada
| | - Ernest D. Laue
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge CB2 1GA, UK
| | - Katherine L. B. Borden
- Institute for Research in Immunology and Cancer, University of Montreal, Montreal, QC H3T 1J4, Canada
- Department of Pathology and Cell Biology, University of Montreal, Montreal, QC H3T 1J4, Canada
| | - James G. Omichinski
- Department of Biochemistry and Molecular Medicine, University of Montreal, Montreal, QC H3C 3J7, Canada
| | - Alain Verreault
- Institute for Research in Immunology and Cancer, University of Montreal, Montreal, QC H3T 1J4, Canada
- Department of Pathology and Cell Biology, University of Montreal, Montreal, QC H3T 1J4, Canada
- Correspondence: (A.G.N.); (A.V.)
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Yan W, Shi X, Wang H, Liao A, Yang W. Aberrant SPOP- CHAF1A ubiquitination axis triggers tumor autophagy that endows a therapeutical vulnerability in diffuse large B cell lymphoma. Lab Invest 2022; 20:296. [PMID: 35773729 PMCID: PMC9248129 DOI: 10.1186/s12967-022-03476-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 06/08/2022] [Indexed: 01/02/2023]
Abstract
Purpose Aberrant epigenetic changes, like DNA methylation, histone modifications, or ubiquitination, could trigger metabolic disorders in human cancer cells. This study planed to uncover the biological roles of epigenetic SPOP/CHAF1A axis in modulating tumor autophagy during Diffuse large B-cell lymphoma (DLBCL) tumorigenesis. Materials and methods The Immunohistochemistry (IHC) was performed to assess the CHAF1A expressions. The expression data of CHAF1A was derived from The Cancer Genome Atlas (TCGA), GSE32918 and GSE83632 datasets. Bioinformatic assays contain differential analysis, functional enrichment analysis and Kaplan–Meier survival curve analysis. The colony generation assay, Transwell assay and CCK-8 assays were conducted for the in vitro assays. The in vivo ubiquitination assays were used to assess regulations of SPOP on CHAF1A. The Chromatin immunoprecipitation (ChIP) assays were used to uncover epigenetic regulations of CHAF1A on TFEB. The relevant DLBCL cells were subcutaneously injected to SCID beige mice to establish the xenograft models. Results Bioinformatic results revealed that CHAF1A expressed highly in DLBCL that were validated in patients samples. Patients with high CHAF1A suffered from inferior prognosis with shorter survival months relative to those with low CHAF1A. High CHAF1A enhanced DLBCL aggressiveness, including cell proliferation, migration and in vivo growth. Mechanistically, E3 ubiquitin ligase SPOP binds to and induces the degradative ubiquitination of CHAF1A via recognizing a consensus SPOP-binding motif in CHAF1A. SPOP is down-regulated in DLBCL and habours two DLBCL-associated mutations. Deficient SPOP leads to accumulated CHAF1A proteins that promote malignant features of DLBCL. Subsequently, ChIP-qPCR assay revealed that CHAF1A directly binds to TFEB promoters to activate the expressions. High CHAF1A could enhance the transcriptional activity of TFEB and downstream genes. The SPOP/CHAF1A axis modulates TFEB-dependent transactivation to regulate the lysosomal biogenesis and autophagy. The in vivo models suggested that TFEB inhibition is effective to suppress growth of SPOP-deficient DLBCLs. Conclusions CHAF1A is aberrantly elevated in SPOP-deficient DLBCL. The in‐depth mechanism understanding of SPOP/CHAF1A/TFEB axis endows novel targets for DLBCL treatment.
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Affiliation(s)
- Wei Yan
- Department of Hematology, Shengjing Hospital of China Medical University, 39 Huaxiang Road, Shenyang, Liaoning, China
| | - Xue Shi
- Department of Hematology, Shengjing Hospital of China Medical University, 39 Huaxiang Road, Shenyang, Liaoning, China
| | - Huihan Wang
- Department of Hematology, Shengjing Hospital of China Medical University, 39 Huaxiang Road, Shenyang, Liaoning, China
| | - Aijun Liao
- Department of Hematology, Shengjing Hospital of China Medical University, 39 Huaxiang Road, Shenyang, Liaoning, China
| | - Wei Yang
- Department of Hematology, Shengjing Hospital of China Medical University, 39 Huaxiang Road, Shenyang, Liaoning, China.
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Ayoub J, Buonanno M, Di Fiore A, De Simone G, Monti SM. Biochemical and Structural Insights into the Winged Helix Domain of P150, the Largest Subunit of the Chromatin Assembly Factor 1. Int J Mol Sci 2022; 23:2160. [PMID: 35216276 DOI: 10.3390/ijms23042160] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/11/2022] [Accepted: 02/12/2022] [Indexed: 02/05/2023] Open
Abstract
The Chromatin Assembly Factor 1 is a heterotrimeric complex responsible for the nucleosome assembly during DNA replication and DNA repair. In humans, the largest subunit P150 is the major actor of this process. It has been recently considered as a tumor-associated protein due to its overexpression in many malignancies. Structural and functional studies targeting P150 are still limited and only scarce information about this subunit is currently available. Literature data and bioinformatics analysis assisted the identification of a stable DNA binding domain, encompassing residues from 721 to 860 of P150 within the full-length protein. This domain was recombinantly produced and in vitro investigated. An acidic region modulating its DNA binding ability was also identified and characterized. Results showed similarities and differences between the P150 and its yeast homologue, namely Cac-1, suggesting that, although sharing a common biological function, the two proteins may also possess different features.
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Geis FK, Sabo Y, Chen X, Li Y, Lu C, Goff SP. CHAF1A/B mediate silencing of unintegrated HIV-1 DNAs early in infection. Proc Natl Acad Sci U S A 2022; 119:e2116735119. [PMID: 35074917 PMCID: PMC8795523 DOI: 10.1073/pnas.2116735119] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 12/20/2021] [Indexed: 12/27/2022] Open
Abstract
Early events of the retroviral life cycle are the targets of many host restriction factors that have evolved to prevent establishment of infection. Incoming retroviral DNAs are transcriptionally silenced before integration in most cell types, and efficient viral gene expression occurs only after formation of the provirus. The molecular machinery for silencing unintegrated retroviral DNAs of HIV-1 remains poorly characterized. Here, we identified the histone chaperones CHAF1A and CHAF1B as essential factors for silencing of unintegrated HIV-1 DNAs. Using RNAi-mediated knockdown (KD) of multiple histone chaperones, we found that KD of CHAF1A or CHAF1B resulted in a pronounced increase in expression of incoming viral DNAs. The function of these two proteins in silencing was independent of their interaction partner RBBP4. Viral DNA levels accumulated to significantly higher levels in CHAF1A KD cells over controls, suggesting enhanced stabilization of actively transcribed DNAs. Chromatin immunoprecipitation assays revealed no major changes in histone loading onto viral DNAs in the absence of CHAF1A, but levels of the H3K9 trimethylation silencing mark were reduced. KD of the H3K9me3-binding protein HP1γ accelerated the expression of unintegrated HIV-1 DNAs. While CHAF1A was critical for silencing HIV-1 DNAs, it showed no role in silencing of unintegrated retroviral DNAs of mouse leukemia virus. Our study identifies CHAF1A and CHAF1B as factors involved specifically in silencing of HIV-1 DNAs early in infection. The results suggest that these factors act by noncanonical pathways, distinct from their histone loading activities, to mediate silencing of newly synthesized HIV-1 DNAs.
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Affiliation(s)
- Franziska K Geis
- Department of Biochemistry and Molecular Biophysics, Columbia University Medical Center, New York, NY 10032
- Department of Microbiology and Immunology, Columbia University Medical Center, New York, NY 10032
- HHMI, Columbia University Medical Center, New York, NY 10032
- Aaron Diamond AIDS Research Center, Columbia University Medical Center, New York, NY 10032
| | - Yosef Sabo
- Aaron Diamond AIDS Research Center, Columbia University Medical Center, New York, NY 10032
- Division of Infectious Diseases, Department of Medicine, Columbia University Medical Center, New York, NY 10032
| | - Xiao Chen
- Department of Genetics and Development, Columbia University Medical Center, New York, NY 10032
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032
| | - Yinglu Li
- Department of Genetics and Development, Columbia University Medical Center, New York, NY 10032
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032
| | - Chao Lu
- Department of Genetics and Development, Columbia University Medical Center, New York, NY 10032
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032
| | - Stephen P Goff
- Department of Biochemistry and Molecular Biophysics, Columbia University Medical Center, New York, NY 10032;
- Department of Microbiology and Immunology, Columbia University Medical Center, New York, NY 10032
- HHMI, Columbia University Medical Center, New York, NY 10032
- Aaron Diamond AIDS Research Center, Columbia University Medical Center, New York, NY 10032
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032
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Tao L, Moreno‐Smith M, Ibarra‐García‐Padilla R, Milazzo G, Drolet NA, Hernandez BE, Oh YS, Patel I, Kim JJ, Zorman B, Patel T, Kamal AHM, Zhao Y, Hicks J, Vasudevan SA, Putluri N, Coarfa C, Sumazin P, Perini G, Parchem RJ, Uribe RA, Barbieri E. CHAF1A Blocks Neuronal Differentiation and Promotes Neuroblastoma Oncogenesis via Metabolic Reprogramming. Adv Sci (Weinh) 2021; 8:e2005047. [PMID: 34365742 PMCID: PMC8498874 DOI: 10.1002/advs.202005047] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 06/04/2021] [Indexed: 05/28/2023]
Abstract
Neuroblastoma (NB) arises from oncogenic disruption of neural crest (NC) differentiation. Treatment with retinoic acid (RA) to induce differentiation has improved survival in some NB patients, but not all patients respond, and most NBs eventually develop resistance to RA. Loss of the chromatin modifier chromatin assembly factor 1 subunit p150 (CHAF1A) promotes NB cell differentiation; however, the mechanism by which CHAF1A drives NB oncogenesis has remained unexplored. This study shows that CHAF1A gain-of-function supports cell malignancy, blocks neuronal differentiation in three models (zebrafish NC, human NC, and human NB), and promotes NB oncogenesis. Mechanistically, CHAF1A upregulates polyamine metabolism, which blocks neuronal differentiation and promotes cell cycle progression. Targeting polyamine synthesis promotes NB differentiation and enhances the anti-tumor activity of RA. The authors' results provide insight into the mechanisms that drive NB oncogenesis and suggest a rapidly translatable therapeutic approach (DFMO plus RA) to enhance the clinical efficacy of differentiation therapy in NB patients.
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Wang D, Li X, Shen B, Chen X, Shu Y. Histone chaperone CHAF1A impacts the outcome of fluoropyrimidines-based adjuvant therapy in gastric cancer by regulating the expression of thymidylate synthetase. Gene 2019; 716:144034. [PMID: 31377317 DOI: 10.1016/j.gene.2019.144034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 07/30/2019] [Accepted: 07/31/2019] [Indexed: 12/29/2022]
Abstract
BACKGROUND Outcome in adjuvant chemotherapy of gastric cancer (GC) has considerable stage-independent variability, which underscores the need for prognostic or predictive molecular markers. CHAF1A promotes tumor growth while its impact on chemotherapy outcome remains unknown. METHODS CHAF1A protein expression was measured in independent discovery and validation sets that included 86 and 325 patients respectively who received fluoropyrimidines-based adjuvant chemotherapy after radical gastrectomy. The chemosensitizing effect of CHAF1A knockdown was investigated in vitro. Bioinformatics analysis based on RNA-seq and proteome data from public database was performed to investigate the potential mechanisms and further validation was conducted. RESULTS In both the discovery and validation sets, CHAF1A expression level was an independent predictor for disease-free survival (HR = 4.25; 95% CI: 2.31-7.79; P < 0.001; and HR = 1.91; 95% CI: 1.03-3.54; P = 0.039, respectively) and overall survival (HR = 3.25; 95% CI: 1.75-6.05; P < 0.001; and HR = 2.42; 95% CI: 1.12-5.20; P = 0.024, respectively) in patients with non-cardia GC but not in those with cardia GC. In GC cells, CHAF1A knockdown significantly decreased the IC50 of 5-FU. Bioinformatics analyses indicated that CHAF1A correlated with folate metabolism and the expression of thymidylate synthetase (TS). Furthermore, CHAF1A knockdown significantly reduced TS expression in GC cells and CHAF1A positively correlated with TS protein expression in tumor tissues. Finally, ten proteins potentially relevant to the regulation of TS expression by CHAF1A were identified using online tools based on RNA-seq and proteome data. CONCLUSIONS CHAF1A may impact adjuvant chemotherapy outcome of GC by regulating the expression of TS.
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Zheng L, Liang X, Li S, Li T, Shang W, Ma L, Jia X, Shao W, Sun P, Chen C, Jia J. CHAF1A interacts with TCF4 to promote gastric carcinogenesis via upregulation of c-MYC and CCND1 expression. EBioMedicine 2018; 38:69-78. [PMID: 30449701 PMCID: PMC6306399 DOI: 10.1016/j.ebiom.2018.11.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 10/29/2018] [Accepted: 11/05/2018] [Indexed: 12/15/2022] Open
Abstract
Background Histones chaperones have been found to play critical roles in tumor development and progression. However, the role of histone chaperone CHAF1A in gastric carcinogenesis and its underlying mechanisms remain elusive. Methods CHAF1A expression in gastric cancer (GC) was analyzed in GEO datasets and clinical specimens. CHAF1A knockdown and overexpression were used to explore its functions in gastric cancer cells. The regulation and potential molecular mechanism of CHAF1A expression in gastric cancer cells were studied by using cell and molecular biological methods. Findings CHAF1A was upregulated in GC tissues and its high expression predicted poor prognosis in GC patients. Overexpression of CHAF1A promoted gastric cancer cell proliferation both in vitro and in vivo, whereas CHAF1A suppression exhibited the opposite effects. Mechanistically, CHAF1A acted as a co-activator in the Wnt pathway. CHAF1A directly interacted with TCF4 to enhance the expression of c-MYC and CCND1 through binding to their promoter regions. In addition, the overexpression of CHAF1A was modulated by specificity protein 1 (Sp1) in GC. Sp1 transcriptionally enhanced the expression of CHAF1A in GC. Furthermore, CHAF1A expression induced by Helicobacter pylori was Sp1 dependent. Interpretation CHAF1A is a potential oncogene in GC, and may serve as a novel therapeutic target for GC treatment.
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Affiliation(s)
- Lixin Zheng
- Department of Microbiology/Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Shandong University, Jinan, Shandong 250012, PR China; Key Laboratory of Infection and Immunity of Shandong Province, School of Basic Medical Science, Shandong University, Jinan, Shandong 250012, PR China
| | - Xiuming Liang
- Department of Microbiology/Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Shandong University, Jinan, Shandong 250012, PR China; Shandong University-Karolinska Institutet Collaborative Laboratory for Cancer Research, Jinan, Shandong 250012, PR China
| | - Shuyan Li
- Department of Microbiology/Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Shandong University, Jinan, Shandong 250012, PR China
| | - Tongyu Li
- Department of Microbiology/Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Shandong University, Jinan, Shandong 250012, PR China
| | - Wenjing Shang
- Department of Microbiology/Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Shandong University, Jinan, Shandong 250012, PR China
| | - Lin Ma
- Department of Microbiology/Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Shandong University, Jinan, Shandong 250012, PR China
| | - Xiaxia Jia
- Department of Microbiology/Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Shandong University, Jinan, Shandong 250012, PR China
| | - Wei Shao
- Department of Microbiology/Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Shandong University, Jinan, Shandong 250012, PR China
| | - Pengpeng Sun
- Department of Microbiology/Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Shandong University, Jinan, Shandong 250012, PR China
| | - Chunyan Chen
- Cancer Center, Qilu Hospital, Shandong University, Jinan, Shandong 250012, PR China
| | - Jihui Jia
- Department of Microbiology/Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Shandong University, Jinan, Shandong 250012, PR China; Key Laboratory of Infection and Immunity of Shandong Province, School of Basic Medical Science, Shandong University, Jinan, Shandong 250012, PR China; Shandong University-Karolinska Institutet Collaborative Laboratory for Cancer Research, Jinan, Shandong 250012, PR China.
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Xia D, Yang X, Liu W, Shen F, Pan J, Lin Y, Du N, Sun Y, Xi X. Over-expression of CHAF1A in Epithelial Ovarian Cancer can promote cell proliferation and inhibit cell apoptosis. Biochem Biophys Res Commun 2017; 486:191-197. [PMID: 28286267 DOI: 10.1016/j.bbrc.2017.03.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 03/08/2017] [Indexed: 12/21/2022]
Abstract
Chromatin Assembly Factor 1, subunit A (CHAF1A) can regulate cell proliferation, DNA repair and epigenetic changes in embryonic stem cells and it has been reported that over-expression of CHAF1A is associated with several human diseases including cancer. However, the expression and function of CHAF1A in Epithelial Ovarian Cancer (EOC) are rarely reported at present. In this study, we found that the positive staining of CHAF1A in EOC was higher than that in normal tissues and over-expression of CHAF1A was strongly associated with cancer stage and lymph node metastasis. Knockdown of CHAF1A by siRNA in EOC inhibited cell proliferation, reduced colony formation, caused G0/G1 phase arrest and promoted cell apoptosis. Taken together, the high expression of CHAF1A promotes cell proliferation and inhibits cell apoptosis and CHAF1A may be developed as a prognosis biomarker and potential therapeutic target of EOC.
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Affiliation(s)
- Dandan Xia
- Department of Obstetrics and Gynecology, Shanghai Jiaotong University Affiliated First People's Hospital, 650# XinSongJiang Road, Shanghai, 201600, China
| | - Xiaoming Yang
- Department of Obstetrics and Gynecology, Shanghai Jiaotong University Affiliated First People's Hospital, 650# XinSongJiang Road, Shanghai, 201600, China
| | - Wenxue Liu
- Department of Obstetrics and Gynecology, Shanghai Jiaotong University Affiliated First People's Hospital, 650# XinSongJiang Road, Shanghai, 201600, China
| | - Fangqian Shen
- Department of Obstetrics and Gynecology, Shanghai Jiaotong University Affiliated First People's Hospital, 650# XinSongJiang Road, Shanghai, 201600, China
| | - Jufang Pan
- Department of Obstetrics and Gynecology, Shanghai Jiaotong University Affiliated First People's Hospital, 650# XinSongJiang Road, Shanghai, 201600, China
| | - Yu Lin
- Department of Obstetrics and Gynecology, Shanghai Jiaotong University Affiliated First People's Hospital, 650# XinSongJiang Road, Shanghai, 201600, China
| | - Na Du
- Department of Obstetrics and Gynecology, Shanghai Jiaotong University Affiliated First People's Hospital, 650# XinSongJiang Road, Shanghai, 201600, China
| | - Yunyan Sun
- Department of Obstetrics and Gynecology, Shanghai Jiaotong University Affiliated First People's Hospital, 650# XinSongJiang Road, Shanghai, 201600, China
| | - Xiaowei Xi
- Department of Obstetrics and Gynecology, Shanghai Jiaotong University Affiliated First People's Hospital, 650# XinSongJiang Road, Shanghai, 201600, China.
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Xu M, Jia Y, Liu Z, Ding L, Tian R, Gu H, Wang Y, Zhang H, Tu K, Liu Q. Chromatin assembly factor 1, subunit A (P150) facilitates cell proliferation in human hepatocellular carcinoma. Onco Targets Ther 2016; 9:4023-35. [PMID: 27445493 PMCID: PMC4936808 DOI: 10.2147/ott.s107050] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Several studies have revealed that the abnormal expression of chromatin assembly factor 1, subunit A (P150) (CHAF1A) was involved in the development of some types of malignant tumors. However, CHAF1A expression and its role in hepatocellular carcinoma (HCC) remain poorly characterized. In this study, we first investigated CHAF1A expression in six cell lines and 116 pairs of HCC and matched normal tumor-adjacent tissues to evaluate the clinicopathological characteristics of CHAF1A in HCC. Then, we detected the proliferation and apoptosis in HCC cells. In addition, a subcutaneous tumor model in nude mice was performed to evaluate tumor growth in vivo. We found that the expression of CHAF1A was significantly higher in HCC tissues than that in adjacent nontumor tissues (P<0.01). Clinical analysis indicated that CHAF1A expression was significantly correlated with the tumor–node–metastasis stage, tumor number, and tumor differentiation in HCC tissues (P<0.05, respectively). We also found that CHAF1A may potentially function as a poor prognostic indicator for 5-year overall and disease-free survival in patients with HCC (P<0.05, respectively). The elevated expression of CHAF1A was also observed in HCC cell lines compared with that in normal LO2 hepatic cell line (P<0.01). HCC cancer cells exhibited inhibition of cell growth, reduction in colony-formation ability, increased cell apoptosis rate, and impaired tumorigenicity in nude mice after CHAF1A knockdown. Collectively, we propose that CHAF1A by potentially mediating cancer cell proliferation plays an important role in promoting the development of HCC and may serve as a potential therapeutic target in HCC.
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Affiliation(s)
- Meng Xu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Yuli Jia
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Zhikui Liu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Linglong Ding
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Run Tian
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Hua Gu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Yufeng Wang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Hongyong Zhang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Kangsheng Tu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Qingguang Liu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
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Peng H, Du B, Jiang H, Gao J. Over-expression of CHAF1A promotes cell proliferation and apoptosis resistance in glioblastoma cells via AKT/FOXO3a/Bim pathway. Biochem Biophys Res Commun 2015; 469:1111-6. [PMID: 26740175 DOI: 10.1016/j.bbrc.2015.12.111] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Accepted: 12/24/2015] [Indexed: 11/16/2022]
Abstract
Chromatinassembly factor 1 subunit A (CHAF1A) has been reported to be involved in several human diseases including cancer. However, the biological and clinical significance of CHAF1A in glioblastoma progression remains largely unknown. In this study, we found that up-regulation of CHAF1A happens frequently in glioblastoma tissues and is associated with glioblastoma prognosis. Knockout of CHAF1A by CRISPR/CAS9 technology induce G1 phase arrest and apoptosis in glioblastoma cell U251 and U87. In addition, inhibition of CHAF1A influenced the signal transduction of the AKT/FOXO3a/Bim axis, which is required for glioblastoma cell proliferation. Taken together, these results show that CHAF1A contributes to the proliferation of glioblastoma cells and may be developed as a de novo drug target and prognosis biomarker of glioblastoma.
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Affiliation(s)
- Honghai Peng
- Department of Neurosurgery, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, China
| | - Bin Du
- Department of Neurosurgery, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, China
| | - Huili Jiang
- Friendship Nephrology and Blood Purification Center, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, China
| | - Jun Gao
- Department of Neurosurgery, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, China.
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Wu Z, Cui F, Yu F, Peng X, Jiang T, Chen D, Lu S, Tang H, Peng Z. Up-regulation of CHAF1A, a poor prognostic factor, facilitates cell proliferation of colon cancer. Biochem Biophys Res Commun 2014; 449:208-15. [PMID: 24845563 DOI: 10.1016/j.bbrc.2014.05.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Accepted: 05/02/2014] [Indexed: 01/18/2023]
Abstract
Deregulation of chromatin assembly factor 1, p150 subunit A (CHAF1A) has recently been reported to be involved in the development of some cancer types. In this study, we identified that the frequency of positive CHAF1A staining in primary tumor mucosa (45.8%, 93 of 203 samples) was significantly elevated compared to that in paired normal mucosa (18.7%, 38 of 203 samples). The increased expression was strongly associated with cancer stage, tumor invasion, and histological grade. The five-year survival rate of patients with CHAF1A-positive tumors was remarkably lower than that of patients with CHAF1A-negative tumors. Colon cancer cells with CHAF1A knockdown exhibited decreased cell growth index, reduction in colony formation ability, elevated cell apoptosis rate as well as impaired colon tumorigenicity in nude mice. Hence, CHAF1A upregulation functions as a poor prognostic indicator of colon cancer, potentially contributing to its progression by mediating cancer cell proliferation.
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Affiliation(s)
- Zehua Wu
- Department of General Surgery, Shanghai Jiaotong University Affiliated First People's Hospital, 85 Wujin Road, Shanghai 200080, People's Republic of China
| | - Feifei Cui
- Department of General Surgery, Shanghai Jiaotong University Affiliated First People's Hospital, 85 Wujin Road, Shanghai 200080, People's Republic of China
| | - Fudong Yu
- Department of General Surgery, Shanghai Jiaotong University Affiliated First People's Hospital, 85 Wujin Road, Shanghai 200080, People's Republic of China
| | - Xiao Peng
- Department of General Surgery, Shanghai Jiaotong University Affiliated First People's Hospital, 85 Wujin Road, Shanghai 200080, People's Republic of China
| | - Tao Jiang
- Department of General Surgery, Shanghai Jiaotong University Affiliated First People's Hospital, 85 Wujin Road, Shanghai 200080, People's Republic of China
| | - Dawei Chen
- Department of General Surgery, Shanghai Jiaotong University Affiliated First People's Hospital, 85 Wujin Road, Shanghai 200080, People's Republic of China
| | - Su Lu
- Department of Pathology, Shanghai Jiaotong University Affiliated First People's Hospital, 85 Wujin Road, Shanghai 200080, People's Republic of China
| | - Huamei Tang
- Department of Pathology, Shanghai Jiaotong University Affiliated First People's Hospital, 85 Wujin Road, Shanghai 200080, People's Republic of China.
| | - Zhihai Peng
- Department of General Surgery, Shanghai Jiaotong University Affiliated First People's Hospital, 85 Wujin Road, Shanghai 200080, People's Republic of China.
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