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Cai X, Lv Y, Pan J, Cao Z, Zhang J, Li Y, Zheng H. CBX8 Promotes Epithelial-mesenchymal Transition, Migration, and Invasion of Lung Cancer through Wnt/β-catenin Signaling Pathway. Curr Protein Pept Sci 2024; 25:386-393. [PMID: 38265409 DOI: 10.2174/0113892037273375231204080906] [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: 07/21/2023] [Revised: 10/18/2023] [Accepted: 10/23/2023] [Indexed: 01/25/2024]
Abstract
BACKGROUND Lung cancer (LC) is primarily responsible for cancer-related deaths worldwide. Epithelial-mesenchymal transition (EMT) is a process in which epithelial cells acquire mesenchymal features and is associated with the development of tumors. CBX8, a member of the PcG protein family, plays a critical role in various cancers, containing LC. However, specific regulatory mechanisms of CBX8 in LC progression are not fully understood. This study aimed to investigate the regulatory role of CBX8 in LC progression. METHODS Bioinformatics was used to analyze the relationship between CBX8 level and tumor and the enrichment pathway of CBX8 enrichment. qRT-PCR was used to detect the differential expression of CBX8 in LC cells and normal lung epithelial cells. The effects of knockdown or overexpression of CBX8 on the proliferation, migration and invasion of LC cells were evaluated by CCK- -8 assay and Transwell assay, and the levels of proteins associated with the EMT pathway and Wnt/ β-catenin signaling pathway were detected by western blot. RESULTS Bioinformatics analysis revealed that CBX8 was highly expressed in LC and enriched on the Wnt/β-catenin signaling pathway. The expression level of CBX8 was significantly elevated in LC cells. Knockdown of CBX8 significantly inhibited cell proliferation, migration and invasion, and decreased the expression levels of EMT-related proteins and Wnt/β-catenin pathway-related proteins. Conversely, overexpression of CBX8 promoted cell proliferation, migration and invasion, and increased the expression levels of EMT-related proteins and Wnt/β-catenin pathway-related proteins. The Wnt inhibitor IWP-4 alleviated the effects produced by overexpression of CBX8. CONCLUSION Collectively, these data demonstrated that CBX8 induced EMT through Wnt/β-- catenin signaling, driving migration and invasion of LC cells.
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Affiliation(s)
- Xiaoping Cai
- Department of Respiratory, Six affiliated Hospital of Wenzhou Medical University, Lishui People's Hospital, Lishui 323000, China
| | - Yuankai Lv
- Department of Respiratory, Six affiliated Hospital of Wenzhou Medical University, Lishui People's Hospital, Lishui 323000, China
| | - Jiongwei Pan
- Department of Respiratory, Six affiliated Hospital of Wenzhou Medical University, Lishui People's Hospital, Lishui 323000, China
| | - Zhuo Cao
- Department of Respiratory, Six affiliated Hospital of Wenzhou Medical University, Lishui People's Hospital, Lishui 323000, China
| | - Junzhi Zhang
- Department of Respiratory, Six affiliated Hospital of Wenzhou Medical University, Lishui People's Hospital, Lishui 323000, China
| | - Yuling Li
- Department of Respiratory, Six affiliated Hospital of Wenzhou Medical University, Lishui People's Hospital, Lishui 323000, China
| | - Hao Zheng
- Department of Respiratory, Six affiliated Hospital of Wenzhou Medical University, Lishui People's Hospital, Lishui 323000, China
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Zhang F, Zhu T, Wu C, Shen D, Liu L, Chen X, Guan Y, Ding H, Tong X. TRIM28 recruits E2F1 to regulate CBX8-mediated cell proliferation and tumor metastasis of ovarian cancer. Hum Cell 2023; 36:2113-2128. [PMID: 37709991 DOI: 10.1007/s13577-023-00983-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 09/03/2023] [Indexed: 09/16/2023]
Abstract
Chromobox protein homolog 8 (CBX8) is a transcriptional suppressor participated in various cancers. However, the function and mechanism of CBX8 in the progression of ovarian cancer (OC) are unclear. In this study, we found that CBX8 was upregulated in OC tissues originating from GEPIA and TNM databases, OC patients' samples from hospital, and OC cell lines. Furthermore, CBX8 knockdown by short hairpin RNA (shRNA) technology markedly inhibited proliferation and invasion, induced migration, cell cycle arrest, and apoptosis in vitro. Mechanistically, CBX8 activated PI3K/AKT/mTOR signaling pathway to take effect. In addition, TRIM28 and E2F1 were enriched in OC tissues from the TNM database and OC patients' samples similar to the results of CBX8. Correlation analysis indicated positive correlations among TRIM28, E2F1, and CBX8. E2F1 was proved to bind to the promoter regions of CBX8 and TRIM28, while TRIM28 recruited E2F1 to increase the expression of CBX8 to further increase cell viability, proliferation, and invasion, and decrease migration, apoptosis, and cell cycle progression. Finally, CBX8 or TRIM28 knockdown repressed tumor growth and metastasis of OC in vivo. Therefore, our study showed that the promoting effect of CBX8 on tumor growth and metastasis of OC was participated in the PI3K/AKT/mTOR signaling, TRIM28 and E2F1. Our findings suggested that CBX8 could serve as a potential marker and therapeutic target for OC patients.
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Affiliation(s)
- Fubin Zhang
- Department of Obstetrics and Gynecology, Tongji Hospital, School of Medicine, Tongji University, No. 389 Xincun Road, Shanghai, 200065, China
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Ningbo University, No. 59 Liuting Street, Ningbo, 315010, Zhejiang Province, China
| | - Tianhong Zhu
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Ningbo University, No. 59 Liuting Street, Ningbo, 315010, Zhejiang Province, China
| | - Chenghao Wu
- Department of Obstetrics and Gynecology, Tongji Hospital, School of Medicine, Tongji University, No. 389 Xincun Road, Shanghai, 200065, China
| | - Dongsheng Shen
- Department of Obstetrics and Gynecology, Tongji Hospital, School of Medicine, Tongji University, No. 389 Xincun Road, Shanghai, 200065, China
| | - Lixiao Liu
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Ningbo University, No. 59 Liuting Street, Ningbo, 315010, Zhejiang Province, China
| | - Xueqin Chen
- Department of Traditional Medicine, The First Affiliated Hospital of Ningbo University, No. 59 Liuting Street, Ningbo, 315010, Zhejiang Province, China
| | - Yutao Guan
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Ningbo University, No. 59 Liuting Street, Ningbo, 315010, Zhejiang Province, China.
| | - Huiqing Ding
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Ningbo University, No. 59 Liuting Street, Ningbo, 315010, Zhejiang Province, China.
| | - Xiaowen Tong
- Department of Obstetrics and Gynecology, Tongji Hospital, School of Medicine, Tongji University, No. 389 Xincun Road, Shanghai, 200065, China.
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Chen H, Su Y, Yang L, Xi L, Li X, Lan B, Liu M, Xuan C. CBX8 promotes lung adenocarcinoma growth and metastasis through transcriptional repression of CDKN2C and SCEL. J Cell Physiol 2023; 238:2710-2723. [PMID: 37733753 DOI: 10.1002/jcp.31124] [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: 06/16/2023] [Revised: 08/28/2023] [Accepted: 09/07/2023] [Indexed: 09/23/2023]
Abstract
Dysregulation of polycomb group (PcG) proteins that mediate epigenetic gene silencing contributes to tumorigenesis. As core components of the polycomb repressive complex 1 (PRC1), chromobox (CBX) proteins recognize H3K27me3 to recruit PRC1 to maintain a repressive transcriptional state. However, the individual biological functions of these CBX proteins in tumorigenesis warrant in-depth investigation. In this study, we analyzed the mRNA expression of CBX family genes across multiple cancers using The Cancer Genome Atlas data and found different expression patterns of the five CBX genes in different types of cancer. This analyses together with the result of immunohistochemistry indicated that CBX8 expression was significantly higher in lung adenocarcinoma (LUAD) tissues compared to adjacent nontumor tissues. Overexpression approaches demonstrated that CBX8 facilitated LUAD cell proliferation and migration in vitro. Consistently, CBX8 knockdown reduced LUAD cell proliferation and migration in both cell culture and mouse models. RNA sequencing combined with real-time RT-PCR assays revealed CDKN2C and SCEL as target genes of CBX8. Furthermore, chromatin immunoprecipitation assays indicated that CBX8 directly bound to the promoters of CDKN2C and SCEL to establish H2AK119ub. CBX8 depletion reduced the enrichment of H2AK119ub on CDKN2C and SCEL promoters. Moreover, depletion of CDKN2C and SCEL restored the repressed growth and invasion ability of LUAD cells caused by CBX8 knockdown. These findings demonstrate that CBX8 promotes LUAD growth and metastasis through the transcriptional repression of CDKN2C and SCEL. Our study uncovers the oncogenic role of CBX8 in LUAD progression and provides a new target for the diagnosis and therapy of LUAD.
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Affiliation(s)
- Hao Chen
- Haihe Laboratory of Cell Ecosystem, College of Life Sciences, Nankai University, Tianjin, China
- Department of Biochemistry and Molecular Biology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Medical University, Tianjin, China
| | - Yijie Su
- Department of Biochemistry and Molecular Biology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Medical University, Tianjin, China
| | - Lihong Yang
- Department of Genetics and Cell Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Lishan Xi
- Department of Biochemistry and Molecular Biology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Medical University, Tianjin, China
| | - Xuanyuan Li
- Department of Biochemistry and Molecular Biology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Medical University, Tianjin, China
| | - Bei Lan
- Department of Biochemistry and Molecular Biology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Medical University, Tianjin, China
| | - Min Liu
- Haihe Laboratory of Cell Ecosystem, College of Life Sciences, Nankai University, Tianjin, China
| | - Chenghao Xuan
- Department of Biochemistry and Molecular Biology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Medical University, Tianjin, China
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Singha M, Pu L, Srivastava G, Ni X, Stanfield BA, Uche IK, Rider PJF, Kousoulas KG, Ramanujam J, Brylinski M. Unlocking the Potential of Kinase Targets in Cancer: Insights from CancerOmicsNet, an AI-Driven Approach to Drug Response Prediction in Cancer. Cancers (Basel) 2023; 15:4050. [PMID: 37627077 PMCID: PMC10452340 DOI: 10.3390/cancers15164050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/16/2023] [Accepted: 07/26/2023] [Indexed: 08/27/2023] Open
Abstract
Deregulated protein kinases are crucial in promoting cancer cell proliferation and driving malignant cell signaling. Although these kinases are essential targets for cancer therapy due to their involvement in cell development and proliferation, only a small part of the human kinome has been targeted by drugs. A comprehensive scoring system is needed to evaluate and prioritize clinically relevant kinases. We recently developed CancerOmicsNet, an artificial intelligence model employing graph-based algorithms to predict the cancer cell response to treatment with kinase inhibitors. The performance of this approach has been evaluated in large-scale benchmarking calculations, followed by the experimental validation of selected predictions against several cancer types. To shed light on the decision-making process of CancerOmicsNet and to better understand the role of each kinase in the model, we employed a customized saliency map with adjustable channel weights. The saliency map, functioning as an explainable AI tool, allows for the analysis of input contributions to the output of a trained deep-learning model and facilitates the identification of essential kinases involved in tumor progression. The comprehensive survey of biomedical literature for essential kinases selected by CancerOmicsNet demonstrated that it could help pinpoint potential druggable targets for further investigation in diverse cancer types.
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Affiliation(s)
- Manali Singha
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA; (M.S.); (G.S.); (X.N.)
| | - Limeng Pu
- Center for Computation and Technology, Louisiana State University, Baton Rouge, LA 70803, USA; (L.P.); (J.R.)
| | - Gopal Srivastava
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA; (M.S.); (G.S.); (X.N.)
| | - Xialong Ni
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA; (M.S.); (G.S.); (X.N.)
| | - Brent A. Stanfield
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA; (B.A.S.); (I.K.U.); (P.J.F.R.); (K.G.K.)
| | - Ifeanyi K. Uche
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA; (B.A.S.); (I.K.U.); (P.J.F.R.); (K.G.K.)
- Division of Biotechnology and Molecular Medicine, Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA
- School of Medicine, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
| | - Paul J. F. Rider
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA; (B.A.S.); (I.K.U.); (P.J.F.R.); (K.G.K.)
- Division of Biotechnology and Molecular Medicine, Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Konstantin G. Kousoulas
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA; (B.A.S.); (I.K.U.); (P.J.F.R.); (K.G.K.)
- Division of Biotechnology and Molecular Medicine, Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA
| | - J. Ramanujam
- Center for Computation and Technology, Louisiana State University, Baton Rouge, LA 70803, USA; (L.P.); (J.R.)
- Division of Electrical and Computer Engineering, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Michal Brylinski
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA; (M.S.); (G.S.); (X.N.)
- Center for Computation and Technology, Louisiana State University, Baton Rouge, LA 70803, USA; (L.P.); (J.R.)
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5
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Soares de Lima Y, Arnau-Collell C, Muñoz J, Herrera-Pariente C, Moreira L, Ocaña T, Díaz-Gay M, Franch-Expósito S, Cuatrecasas M, Carballal S, Lopez-Novo A, Moreno L, Fernàndez G, Díaz de Bustamante A, Peters S, Sommer AK, Spier I, Te Paske IBAW, van Herwaarden YJ, Castells A, Bujanda L, Capellà G, Steinke-Lange V, Mahmood K, Joo JE, Arnold J, Parry S, Macrae FA, Winship IM, Rosty C, Cubiella J, Rodríguez-Alcalde D, Holinski-Feder E, de Voer R, Buchanan DD, Aretz S, Ruiz-Ponte C, Valle L, Balaguer F, Bonjoch L, Castellvi-Bel S. Germline mutations in WNK2 could be associated with serrated polyposis syndrome. J Med Genet 2023; 60:557-567. [PMID: 36270769 PMCID: PMC10313964 DOI: 10.1136/jmg-2022-108684] [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: 05/06/2022] [Accepted: 09/27/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND Patients with serrated polyposis syndrome (SPS) have multiple and/or large serrated colonic polyps and higher risk for colorectal cancer. SPS inherited genetic basis is mostly unknown. We aimed to identify new germline predisposition factors for SPS by functionally evaluating a candidate gene and replicating it in additional SPS cohorts. METHODS After a previous whole-exome sequencing in 39 SPS patients from 16 families (discovery cohort), we sequenced specific genes in an independent validation cohort of 211 unrelated SPS cases. Additional external replication was also available in 297 SPS cases. The WNK2 gene was disrupted in HT-29 cells by gene editing, and WNK2 variants were transfected using a lentiviral delivery system. Cells were analysed by immunoblots, real-time PCR and functional assays monitoring the mitogen-activated protein kinase (MAPK) pathway, cell cycle progression, survival and adhesion. RESULTS We identified 2 rare germline variants in the WNK2 gene in the discovery cohort, 3 additional variants in the validation cohort and 10 other variants in the external cohorts. Variants c.2105C>T (p.Pro702Leu), c.4820C>T (p.Ala1607Val) and c.6157G>A (p.Val2053Ile) were functionally characterised, displaying higher levels of phospho-PAK1/2, phospho-ERK1/2, CCND1, clonogenic capacity and MMP2. CONCLUSION After whole-exome sequencing in SPS cases with familial aggregation and replication of results in additional cohorts, we identified rare germline variants in the WNK2 gene. Functional studies suggested germline WNK2 variants affect protein function in the context of the MAPK pathway, a molecular hallmark in this disease.
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Affiliation(s)
- Yasmin Soares de Lima
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Hospital Clínic, Barcelona, Spain
| | - Coral Arnau-Collell
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Hospital Clínic, Barcelona, Spain
| | - Jenifer Muñoz
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Hospital Clínic, Barcelona, Spain
| | - Cristina Herrera-Pariente
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Hospital Clínic, Barcelona, Spain
| | - Leticia Moreira
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Hospital Clínic, Barcelona, Spain
| | - Teresa Ocaña
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Hospital Clínic, Barcelona, Spain
| | - Marcos Díaz-Gay
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Hospital Clínic, Barcelona, Spain
- Department of Cellular and Molecular Medicine, University of California San Diego (UCSD), San Diego, CA, USA
| | - Sebastià Franch-Expósito
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Hospital Clínic, Barcelona, Spain
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Miriam Cuatrecasas
- Department of Pathology, Hospital Clinic de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd) and Tumor Bank-Biobank, Barcelona, Spain
| | - Sabela Carballal
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Hospital Clínic, Barcelona, Spain
| | - Anael Lopez-Novo
- Fundación Publica Galega de Medicina Xenómica (FPGMX), Grupo de Medicina Xenómica-USC, Instituto de Investigación Sanitaria de Santiago (IDIS), Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Santiago de Compostela, Spain
| | - Lorena Moreno
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Hospital Clínic, Barcelona, Spain
| | - Guerau Fernàndez
- Department of Genetic and Molecular Medicine-IPER, Hospital Sant Joan de Déu and Institut de Recerca Sant Joan de Déu, Center for Biomedical Research Network on Rare Diseases (CIBERER), Barcelona, Spain
| | | | - Sophia Peters
- Institute of Human Genetics, Medical Faculty, University of Bonn, Bonn, Germany
| | - Anna K Sommer
- Institute of Human Genetics, Medical Faculty, University of Bonn, Bonn, Germany
| | - Isabel Spier
- Institute of Human Genetics, Medical Faculty, University of Bonn, Bonn, Germany
- National Center for Hereditary Tumor Syndromes, University Hospital Bonn, Bonn, Germany
| | - Iris B A W Te Paske
- Department of Human Genetics, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Yasmijn J van Herwaarden
- Department of Gastroenterology and Hepatology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Antoni Castells
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Hospital Clínic, Barcelona, Spain
| | - Luis Bujanda
- Gastroenterology Department, Hospital Donostia-Instituto Biodonostia, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Basque Country University (UPV/EHU), San Sebastian, Spain
| | - Gabriel Capellà
- Hereditary Cancer Program, Institute of Oncology, Oncobell, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), L'Hospitalet de Llobregat, Barcelona, Spain
| | - Verena Steinke-Lange
- Medizinische Klinik und Poliklinik IV, Campus Innenstadt, Klinikum der Universität München, Munich, Germany
- MGZ - Center of Medical Genetics Center, Munich, Germany
| | - Khalid Mahmood
- Colorectal Oncogenomics Group, Department of Clinical Pathology, Melbourne Medical School, The University of Melbourne, Parkville, Victoria, Australia
- University of Melbourne Centre for Cancer Research, The University of Melbourne, Parkville, Victoria, Australia
- Melbourne Bioinformatics, The University of Melbourne, Carlton, Victoria, Australia
| | - JiHoon Eric Joo
- Colorectal Oncogenomics Group, Department of Clinical Pathology, Melbourne Medical School, The University of Melbourne, Parkville, Victoria, Australia
- University of Melbourne Centre for Cancer Research, The University of Melbourne, Parkville, Victoria, Australia
| | - Julie Arnold
- New Zealand Familial Gastrointestinal Cancer Service, Auckland, New Zealand
| | - Susan Parry
- New Zealand Familial Gastrointestinal Cancer Service, Auckland, New Zealand
| | - Finlay A Macrae
- Colorectal Medicine and Genetics, Royal Melbourne Hospital, Parkville, Victoria, Australia
- Genomic Medicine and Family Cancer Clinic, Royal Melbourne Hospital, Parkville, Victoria, Australia
- Department of Medicine, The University of Melbourne, Parkville, Victoria, Australia
| | - Ingrid M Winship
- Genomic Medicine and Family Cancer Clinic, Royal Melbourne Hospital, Parkville, Victoria, Australia
- Department of Medicine, The University of Melbourne, Parkville, Victoria, Australia
| | - Christophe Rosty
- Colorectal Oncogenomics Group, Department of Clinical Pathology, Melbourne Medical School, The University of Melbourne, Parkville, Victoria, Australia
- University of Melbourne Centre for Cancer Research, The University of Melbourne, Parkville, Victoria, Australia
- Envoi Specialist Pathologists, Brisbane, Queensland, Australia
- University of Queensland, Brisbane, Queensland, Australia
| | - Joaquin Cubiella
- Gastroenterology Department, Complexo Hospitalario Universitario de Ourense, Instituto de Investigación Sanitaria Galicia Sur, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Ourense, Spain
| | | | - Elke Holinski-Feder
- Medizinische Klinik und Poliklinik IV, Campus Innenstadt, Klinikum der Universität München, Munich, Germany
- MGZ - Center of Medical Genetics Center, Munich, Germany
| | - Richarda de Voer
- Department of Human Genetics, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Daniel D Buchanan
- Colorectal Oncogenomics Group, Department of Clinical Pathology, Melbourne Medical School, The University of Melbourne, Parkville, Victoria, Australia
- University of Melbourne Centre for Cancer Research, The University of Melbourne, Parkville, Victoria, Australia
- Genomic Medicine and Family Cancer Clinic, Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - Stefan Aretz
- Institute of Human Genetics, Medical Faculty, University of Bonn, Bonn, Germany
- National Center for Hereditary Tumor Syndromes, University Hospital Bonn, Bonn, Germany
| | - Clara Ruiz-Ponte
- Fundación Publica Galega de Medicina Xenómica (FPGMX), Grupo de Medicina Xenómica-USC, Instituto de Investigación Sanitaria de Santiago (IDIS), Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Santiago de Compostela, Spain
| | - Laura Valle
- Hereditary Cancer Program, Institute of Oncology, Oncobell, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), L'Hospitalet de Llobregat, Barcelona, Spain
| | - Francesc Balaguer
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Hospital Clínic, Barcelona, Spain
| | - Laia Bonjoch
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Hospital Clínic, Barcelona, Spain
| | - Sergi Castellvi-Bel
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Hospital Clínic, Barcelona, Spain
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6
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Wang J, Yang B, Zhang X, Liu S, Pan X, Ma C, Ma S, Yu D, Wu W. Chromobox proteins in cancer: Multifaceted functions and strategies for modulation (Review). Int J Oncol 2023; 62:36. [PMID: 36734270 PMCID: PMC9937689 DOI: 10.3892/ijo.2023.5484] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 01/23/2023] [Indexed: 02/01/2023] Open
Abstract
Chromobox (CBX) proteins are important epigenetic regulatory proteins and are widely involved in biological processes, such as embryonic development, the maintenance of stem cell characteristics and the regulation of cell proliferation and apoptosis. Disorder and dysfunction of CBXs in cancer usually lead to the blockade or ectoptic activation of developmental pathways, promoting the occurrence, development and progression of cancer. In the present review, the characteristics and functions of CBXs were first introduced. Subsequently, the expression of CBXs in cancers and the relationship between CBXs and clinical characteristics (mainly cancer grade, stage, metastasis and relapse) and prognosis were discussed. Finally, it was described how CBXs regulate cell proliferation and self‑renewal, apoptosis and the acquisition of malignant phenotypes, such as invasion, migration and chemoresistance, through mechanisms involving epigenetic modification, nuclear translocation, noncoding RNA interactions, transcriptional regulation, posttranslational modifications, protein‑protein interactions, signal transduction and metabolic reprogramming. The study also focused on cancer therapies targeting CBXs. The present review provides new insight and a comprehensive basis for follow‑up research on CBXs and cancer.
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Affiliation(s)
- Jian Wang
- Department of Neurovascular Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Bo Yang
- Department of Thoracic Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Xiuhang Zhang
- Department of Burn Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Shuhan Liu
- Department of Neurovascular Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Xiaoqiang Pan
- Department of Neurovascular Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Changkai Ma
- Department of Neurovascular Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Shiqiang Ma
- Department of Neurovascular Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Dehai Yu
- Department of Public Research Platform, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China,Professor Dehai Yu, Public Research Platform, The First Hospital of Jilin University, 1 Xinmin Street, Changchun, Jilin 130021, P.R. China, E-mail:
| | - Wei Wu
- Department of Neurovascular Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China,Correspondence to: Professor Wei Wu, Department of Neurovascular Surgery, The First Hospital of Jilin University, 1 Xinmin Street, Changchun, Jilin 130021, P.R. China, E-mail:
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7
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Xiu M, Li L, Li Y, Gao Y. An update regarding the role of WNK kinases in cancer. Cell Death Dis 2022; 13:795. [PMID: 36123332 PMCID: PMC9485243 DOI: 10.1038/s41419-022-05249-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 09/07/2022] [Accepted: 09/08/2022] [Indexed: 01/23/2023]
Abstract
Mammalian WNK kinases (WNKs) are serine/threonine kinases that contain four members, WNK1-4. They function to maintain ion homeostasis and regulate blood pressure in mammals. Recent studies have revealed that the dysregulation of WNKs contributes to tumor growth, metastasis, and angiogenesis through complex mechanisms, especially through phosphorylating kinase substrates SPS1-related proline/alanine-rich kinase (SPAK) and oxidative stress-responsive kinase 1 (OSR1). Here, we review and discuss the relationships between WNKs and several key factors/biological processes in cancer, including ion channels, cation chloride cotransporters, sodium bicarbonate cotransporters, signaling pathways, angiogenesis, autophagy, and non-coding RNAs. In addition, the potential drugs for targeting WNK-SPAK/OSR1 signaling have also been discussed. This review summarizes and discusses knowledge of the roles of WNKs in cancer, which provides a comprehensive reference for future studies.
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Affiliation(s)
- Mengxi Xiu
- grid.24516.340000000123704535Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine, 200120 Shanghai, China
| | - Li Li
- grid.24516.340000000123704535Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine, 200120 Shanghai, China
| | - Yandong Li
- grid.24516.340000000123704535Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine, 200120 Shanghai, China
| | - Yong Gao
- grid.24516.340000000123704535Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine, 200120 Shanghai, China
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8
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Zheng ZQ, Yuan GQ, Kang NL, Nie QQ, Zhang GG, Wang Z. Chromobox 7/8 serve as independent indicators for glioblastoma via promoting proliferation and invasion of glioma cells. Front Neurol 2022; 13:912039. [PMID: 36034290 PMCID: PMC9403790 DOI: 10.3389/fneur.2022.912039] [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: 04/03/2022] [Accepted: 07/13/2022] [Indexed: 11/13/2022] Open
Abstract
Background The chromobox family, a critical component of epigenetic regulators, participates in the tumorigenesis and progression of many malignancies. However, the roles of the CBX family members (CBXs) in glioblastoma (GBM) remain unclear. Methods The mRNA expression of CBXs was analyzed in tissues and cell lines by Oncomine and Cancer Cell Line Encyclopedia (CCLE). The differential expression of CBXs at the mRNA level was explored in The Cancer Genome Atlas (TCGA) and Chinese Glioma Genome Atlas (CGGA) databases with the “beeswarm” R package. The protein expression of CBXs in GBM was further examined on Human Protein Atlas (HPA). The correlations between CBXs and IDH mutation and between CBXs and GBM subtypes were investigated in the TCGA portal and CGGA database with the “survminer” R package. The alteration of CBXs and their prognostic value were further determined via the cBioPortal and CGGA database with the “survival” R package. The univariate and multivariate analyses were performed to screen out the independent prognostic roles of CBXs in the CGGA database. Cytoscape was used to visualize the functions and related pathways of CBXs in GBM. U251 and U87 glioma cells with gene intervention were used to validate the role of CBX7/8 in tumor proliferation and invasion. Proliferation/invasion-related markers were conducted by Western blot and immunostaining. Results CBXs presented significantly differential expressions in pan-cancers. CBX2/3/5/8 were upregulated, whereas CBX6/7 were downregulated at mRNA level in GBM of TCGA and CGGA databases. Similarly, high expression of CBX2/3/5 and low expression of CBX6/8 were further confirmed at the protein level in the HPA. CBX2/6/7 were positively correlated with IDH mutation and CBX1/2/4/5/8 were closely related to GBM subtypes. CBX7 and CBX8 presented the independent prognostic factors for GBM patient survival. GO and KEGG analyses indicated that CBXs were closely related to the histone H3-K36, PcG protein complex, ATPase, and Wnt pathway. The overexpression of CBX7 and underexpression of CBX8 significantly inhibited the proliferation and invasion of glioma cells in vivo and in vitro. Conclusion Our results suggested that CBX7 and CBX8 served as independent prognostic indicators that promoted the proliferation and invasion of glioma cells, providing a promising strategy for diagnosing and treating GBM.
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Affiliation(s)
- Zong-Qing Zheng
- Department of Neurosurgery and Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Gui-Qiang Yuan
- Department of Neurosurgery and Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
- Department of Neurosurgery, Changshu Second People's Hospital, Suzhou, China
| | - Na-Ling Kang
- Liver Center, The First Affiliated Hospital, Fujian Medical University, Fujian, China
| | - Qian-Qian Nie
- Department of Neurosurgery and Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Guo-Guo Zhang
- Department of Neurosurgery and Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Zhong Wang
- Department of Neurosurgery and Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
- *Correspondence: Zhong Wang
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Potential Diagnostic and Prognostic Values of CBX8 Expression in Liver Hepatocellular Carcinoma, Kidney Renal Clear Cell Carcinoma, and Ovarian Cancer: A Study Based on TCGA Data Mining. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2022; 2022:1372879. [PMID: 35813444 PMCID: PMC9259361 DOI: 10.1155/2022/1372879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 06/08/2022] [Indexed: 11/24/2022]
Abstract
Background Chromobox protein homolog 8 (CBX8), a transcriptional repressor, participates in many biological processes in various carcinomas. Cell differentiation, aging, and cell cycle progression are examples of such processes. It is critical to investigate CBX8 expression and its relationship with clinicopathological characteristics in liver hepatocellular carcinoma (LIHC), kidney renal clear cell carcinoma (KIRC), and ovarian cancer (OV) to investigate CBX8's potential diagnostic and prognostic values. Methods TCGA and CPTAC databases were used to compare the data between cancer and matched normal tissues on RNA and protein expression profiles and their relevant clinical information to determine the relationship between CBX8 and clinicopathological features. Kaplan–Meier analyses were used to assess CBX8 relationship's with disease-free survival (DFS), relapse-free survival (RFS), and overall survival (OS). The multivariate Cox regression analysis was used to identify independent risk factors which affect prognosis. DNA methylation and genetic changes and their impact on prognoses were evaluated by cBioPortal and MethSurv websites. Spearman's correlation was used to determine the relationship of CBX8 expression with somatic mutation. Tumor immune estimation resource (TIMER) was adopted to investigate the relationship between CBX8 and immune cell infiltration (ICI). CBX8-relevant genes and proteins are analyzed by EnhancedVolcano and STRING databases. The gene set enrichment analysis (GSEA) was performed to investigate the potential functions of CBX8. Results CBX8 RNA and protein overexpression were confirmed in LIHC, KIRC, and OV (p < 0.05). High CBX8 was significantly related to the clinical features and poor prognoses. The CBX8 genetic alteration rate was 3%. DNA methylation was also associated with prognoses. CBX8 closely interacted with ICI, TMB, MSI, purity, and ploidy. GO analyses revealed that CBX8-associated genes were enriched in biological processes, cell cycle regulation, and molecular functions. KEGG analyses exhibited that CBX8 was gathered in signaling pathway regulation. GSEA revealed that cell cycle, DNA replication, and Wnt signaling pathways were differentially enriched in the high CBX8 expression group. Conclusions CBX8 could be a potential diagnostic and prognostic biomarker for LIHC, KIRC, and OV cancers.
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Functional regulations between genetic alteration-driven genes and drug target genes acting as prognostic biomarkers in breast cancer. Sci Rep 2022; 12:10641. [PMID: 35739271 PMCID: PMC9226112 DOI: 10.1038/s41598-022-13835-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 05/30/2022] [Indexed: 12/19/2022] Open
Abstract
Differences in genetic molecular features including mutation, copy number alterations and DNA methylation, can explain interindividual variability in response to anti-cancer drugs in cancer patients. However, identifying genetic alteration-driven genes and characterizing their functional mechanisms in different cancer types are still major challenges for cancer studies. Here, we systematically identified functional regulations between genetic alteration-driven genes and drug target genes and their potential prognostic roles in breast cancer. We identified two mutation and copy number-driven gene pairs (PARP1-ACSL1 and PARP1-SRD5A3), three DNA methylation-driven gene pairs (PRLR-CDKN1C, PRLR-PODXL2 and PRLR-SRD5A3), six gene pairs between mutation-driven genes and drug target genes (SLC19A1-SLC47A2, SLC19A1-SRD5A3, AKR1C3-SLC19A1, ABCB1-SRD5A3, NR3C2-SRD5A3 and AKR1C3-SRD5A3), and four copy number-driven gene pairs (ADIPOR2-SRD5A3, CASP12-SRD5A3, SLC39A11-SRD5A3 and GALNT2-SRD5A3) that all served as prognostic biomarkers of breast cancer. In particular, RARP1 was found to be upregulated by simultaneous copy number amplification and gene mutation. Copy number deletion and downregulated expression of ACSL1 and upregulation of SRD5A3 both were observed in breast cancers. Moreover, copy number deletion of ACSL1 was associated with increased resistance to PARP inhibitors. PARP1-ACSL1 pair significantly correlated with poor overall survival in breast cancer owing to the suppression of the MAPK, mTOR and NF-kB signaling pathways, which induces apoptosis, autophagy and prevents inflammatory processes. Loss of SRD5A3 expression was also associated with increased sensitivity to PARP inhibitors. The PARP1-SRD5A3 pair significantly correlated with poor overall survival in breast cancer through regulating androgen receptors to induce cell proliferation. These results demonstrate that genetic alteration-driven gene pairs might serve as potential biomarkers for the prognosis of breast cancer and facilitate the identification of combination therapeutic targets for breast cancers.
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Meng Q, Li L, Wang L. High CBX8 Expression Leads to Poor Prognosis in Laryngeal Squamous Cell Carcinoma by Inducing EMT by Activating the Wnt/β-Catenin Signaling Pathway. Front Oncol 2022; 12:881262. [PMID: 35814427 PMCID: PMC9259798 DOI: 10.3389/fonc.2022.881262] [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: 02/22/2022] [Accepted: 05/25/2022] [Indexed: 11/13/2022] Open
Abstract
Background In this study, we detected the expression of chromobox protein homolog 8 (CBX8) in laryngeal squamous cell carcinoma (LSCC) and its influence on the occurrence and progression of LSCC. Methods Pancancer analysis of CBX8 was analyzed by TCGA database and its expression in LSCC.The expression of CBX8 in 30 pairs of LSCC and adjacent tissues was analyzed by quantitative real-time PCR(qRT-PCR)and immunohistochemical assays, and its association with the prognosis and clinicopathological features of LSCC was further evaluated. A CBX8 knockdown model was constructed in AMC-HN-8 and Hep2 cell lines. The effects of CBX8 on LSCC cell proliferation, migration, invasion and apoptosis were detected by CCK8,EdU,wound healing, Transwell and flow cytometry assays. Levels of apoptosis-related protein, WNT/β-catenin signaling pathway and epithelial to mesenchymal transition (EMT) proteins, including Bax, Bcl2, β-catenin, DKK1, GSK3β, N-cadherin, E-cadherin and Snail1, in LSCC cells were detected by Western blotting. Results CBX8 was overexpressed in LSCC. High expression of CBX8 in LSCC patients led to shorter overall survival and correlated with tumor stage and lymphatic metastasis. After CBX8 knockdown, the proliferation of AMC-HN-8 and Hep2 cells slowed, and the number of EdU-positive cells decreased. Wound healing slowed down, and the number of Transwell invading cells decreased. The percentage of apoptotic cells increased. The expression levels of Bcl2, β-catenin, N-cadherin and Snail11 proteins were significantly reduced in the CBX8 knockdown cells, while Bax, DKK1, GSK3β and E-cadherin significantly increased with their corresponding controls. Conclusion CBX8 is highly expressed in LSCC and induces the EMT process by activating the Wnt/β-catenin signaling pathway to promote LSCC cell proliferation and migration and inhibit apoptosis, resulting in poor prognosis.
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Affiliation(s)
- Qingchao Meng
- Department of Otolaryngology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Lei Li
- Department of Urology, ShengJing Hospital of China Medical University, Shenyang, China
| | - Liping Wang
- Department of Otolaryngology, Shengjing Hospital of China Medical University, Shenyang, China
- *Correspondence: Liping Wang,
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12
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Ng L, Li HS, Man ATK, Chow AKM, Foo DCC, Lo OSH, Pang RWC, Law WL. High Expression of a Cancer Stemness-Related Gene, Chromobox 8 (CBX8), in Normal Tissue Adjacent to the Tumor (NAT) Is Associated with Poor Prognosis of Colorectal Cancer Patients. Cells 2022; 11:cells11111852. [PMID: 35681547 PMCID: PMC9180723 DOI: 10.3390/cells11111852] [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: 03/21/2022] [Revised: 05/27/2022] [Accepted: 06/02/2022] [Indexed: 02/05/2023] Open
Abstract
Background: Several studies have demonstrated that the molecular profile of normal tissue adjacent to the tumor (NAT) is prognostic for recurrence in patients with different cancers. This study investigated the clinical significance of CBX8 gene expression, a cancer stemness-related gene, in tumor and NAT tissue of colorectal cancer (CRC) patients. Methods: The gene level of CBX8 in paired CRC and NAT specimens from 95 patients was determined by quantitative PCR. CBX8 protein level in CRC and NAT specimens from 66 patients was determined by immunohistochemistry. CBX8 gene and protein levels were correlated with the patients’ clinicopathological parameters and circulatory immune cell profiles. The association between CBX8 and pluripotency-associated genes was analyzed using the TCGA database. Results: NAT CBX8 gene level positively correlated with TNM stage, tumor invasion, lymph node metastasis and distant metastasis, indicating its association with tumor progression and metastasis. There was no correlation between NAT CBX8 protein level and clinicopathological parameters. Moreover, a high level of CBX8 gene and protein in NAT both correlated with poor DFS and OS. There was an inverse correlation between CBX8 gene level and post-operative platelet counts and platelet to lymphocyte level, suggesting its association with systematic inflammation. Finally, TCGA analysis showed that CBX8 level was correlated with a couple of pluripotency-associated genes, supporting its association with cancer stemness. Conclusions: High NAT CBX8 is a poor prognostic factor for tumor progression and survival in CRC patients.
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Affiliation(s)
- Lui Ng
- Correspondence: (L.N.); (W.-L.L.)
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Hu K, Yao L, Xu Z, Yan Y, Li J. Prognostic Value and Therapeutic Potential of CBX Family Members in Ovarian Cancer. Front Cell Dev Biol 2022; 10:832354. [PMID: 35155439 PMCID: PMC8829121 DOI: 10.3389/fcell.2022.832354] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 01/12/2022] [Indexed: 02/05/2023] Open
Abstract
Background: Ovarian cancer (OV) is one of the common malignant tumors and has a poor prognosis. Chromobox (CBX) family proteins are critical components of epigenetic regulation complexes that repress target genes transcriptionally via chromatin modification. Some studies have investigated the function specifications among several CBXs members in multiple cancer types, however, little is known about the functions and prognostic roles of distinct CBXs family proteins in ovarian cancer. Methods: In this study, several bioinformatics databases and in vitro experiments were used to analyze the expression profiles, prognostic values, and therapeutic potential of the CBXs family (CBX1-8) in ovarian cancer. Results: It was found that higher expression of CBX3/8 and lower expression of CBX1/6/7 were detected in OV tissues. CBX2/4/5/8 were significantly correlated with individual cancer stages of OV. The expression of CBX1/2/3 were all significantly associated with worse overall survival (OS) and progression-free survival (PFS) for OV patients, whereas the expression of other five CBXs members showed either irrelevant (CBX5 and CBX8) or inconsistent (CBX4, CBX6, and CBX7) results for both OS and PFS in OV. These results showed that only CBX3 had consistent results in expression and prognosis. Further cell experiments also showed that CBX3 promoted the proliferation of ovarian cancer cells. CBX3 was highly expressed in chemoresistant OV tissues. These results indicated that CBX3 was the most likely prognostic indicator and new therapeutic target in OV. Furthermore, gene enrichment analysis suggests that the CBXs family was primarily involved in mast cell activation and mast cell mediated immunity. Individual CBXs members were associated with varying degrees of the infiltration of immune cells, especially B cells. Finally, a high genetic alteration rate of CBXs family (39%) was observed in OV. The low methylation status of CBX3/8 in OV may be associated with their high expression levels. Conclusions: Taken together, these findings exhibited the pivotal value of CBXs family members (especially CBX3) in the prognosis and chemoresistance of ovarian cancer. Our results may provide new insight to explore new prognostic biomarkers and therapeutic targets for ovarian cancer.
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Affiliation(s)
- Kuan Hu
- Department of Hepatobiliary Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Lei Yao
- Department of Hepatobiliary Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Zhijie Xu
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Yuanliang Yan
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Juanni Li, ; Yuanliang Yan,
| | - Juanni Li
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Juanni Li, ; Yuanliang Yan,
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Hu CY, Li X, Zeng T, Ye DM, Li YK, Yan HX. Significance of chromobox protein (CBX) expression in diffuse LBCL. Gene 2021; 813:146092. [PMID: 34896523 DOI: 10.1016/j.gene.2021.146092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 10/24/2021] [Accepted: 11/23/2021] [Indexed: 11/04/2022]
Abstract
BACKGROUND Diffuse large B-cell lymphoma (DLBCL) is the main pathological type of non-Hodgkin lymphoma (NHL). Chromobox (CBX) family proteins are classical components of polycomb group (PcG) complexes in many cancer types, resulting in accelerated carcinogenesis. Nevertheless, the prognostic, functional and expression significance of these CBX family members in DLBCL remain unclear and elusive. METHODS CBX transcriptional levels were confirmed using Oncomine, Gene Expression Profiling Interactive Analysis (GEPIA) and Cancer Cell Line Encyclopedia (CCLE) databases. The protein levels of CBX family members were analysed using The Human Protein Atlas (HPA) database. Information on the PPI network, functional enrichment, drug sensitivity, prognostic value, miRNA network, protein structure, genetic alteration and immune cell infiltration were generated using the GeneMANIA, Metascape, GSCALite, GEPIA, PDB, cBioPortal, and TIMER databases, and the correlation of these factors with CBX expression levels in DLBCL was assessed. RESULTS CBX1/2/3/5/6/8 mRNA levels were significantly enhanced in DLBCL tissues compared to corresponding normal tissues. CBX1/3/4/5/8 protein expression levels were obviously increased, whereas CBX7 was obviously decreased. This difference might be attributed to miRNA regulation based on the miRNA network. Overall survival (OS) analysis showed that CBX levels were not correlated with prognosis in DLBCL patients, indicating that CBXs are not good biomarkers for DLBCL patients. Furthermore, functional enrichment analyses indicated that CBXs were closely related to DNA duplex unwinding, covalent chromatin modification, and histone lysine methylation. The levels of CBXs were also significantly associated with diverse immune cell infiltration in DLBCL. CONCLUSIONS This study reveals that dysregulated CBXs are involved in DLBCL development and might represent potential therapeutic targets for DLBCL.
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Affiliation(s)
- Chun-Yan Hu
- Department of Pediatrics, The Second Affiliated Hospital of University of South China, Hengyang, Hunan 421001, PR China
| | - Xuan Li
- Department of Embryo Laboratory, Changsha Reproductive Medical Hospital, Changsha, Hunan 410000, PR China
| | - Tian Zeng
- Hengyang Medical College & Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study & Department of Pharmacy and Pharmacology, University of South China, Hengyang 421001, PR China
| | - Dong-Mei Ye
- Department of Pathology, The First Hospital of Nanchang City, Nanchang, Jiangxi 330008, PR China
| | - Yu-Kun Li
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of University of South China, Hengyang, Hunan 421001, PR China
| | - Hong-Xia Yan
- Department of Pediatrics, The Second Affiliated Hospital of University of South China, Hengyang, Hunan 421001, PR China.
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15
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Taylor CA, Cobb MH. CCT and CCT-like Modular Protein Interaction Domains in WNK Signaling. Mol Pharmacol 2021; 101:201-212. [PMID: 34312216 DOI: 10.1124/molpharm.121.000307] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 07/14/2021] [Indexed: 11/22/2022] Open
Abstract
The WNK (with-no lysine (K)) kinases and their downstream effector kinases, OSR1 (oxidative stress responsive 1) and SPAK (SPS/STE20-related proline-alanine rich kinase), have well-established functions in the maintenance of cell volume and ion homeostasis. Mutations in these kinases have been linked to an inherited form of hypertension, neurological defects, and other pathologies. A rapidly expanding body of evidence points to the involvement of WNKs in regulating multiple diverse cellular processes as well as the progression of some forms of cancer. How OSR1/SPAK contribute to these processes is well understood in some cases, but completely unknown in others. OSR1 and SPAK are targeted to both WNKs and substrates via their conserved C-terminal (CCT) protein interaction domains. Considerable effort has been put forth to understand the structure, function, and interaction specificity of the CCT domains in relation to WNK signaling, and multiple inhibitors of WNK signaling target these domains. The domains bind RFxV and RxFxV protein sequence motifs with the consensus sequence R-F-x-V/I or R-x-F-x-V/I, but residues outside the core motif also contribute to specificity. CCT interactions are required for OSR1 and SPAK activation and deactivation as well as cation-chloride cotransporter substrate phosphorylation. All four WNKs also contain CCT-like domains that have similar structures and conserved binding residues when compared to CCT domains, but their functions and interaction specificities are mostly unknown. A better understanding of the varied actions of these domains and their interactions will better define the known signaling mechanisms of the WNK pathway as well as uncover new ones. Significance Statement WNK kinases and downstream effector kinases, OSR1 and SPAK, have been shown to be involved in an array of diverse cellular processes. Here we review the function of modular protein interaction domains found in OSR1 and SPAK as well as related domains found in WNKs.
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Affiliation(s)
- Clinton A Taylor
- Pharmacology, University of Texas Southwestern Medical Center, United States
| | - Melanie H Cobb
- Pharmacology, University of Texas Southwestern Medical Center, United States
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Gong L, Zhou X, Sun J. Circular RNAs Interaction with MiRNAs: Emerging Roles in Breast Cancer. Int J Med Sci 2021; 18:3182-3196. [PMID: 34400888 PMCID: PMC8364445 DOI: 10.7150/ijms.62219] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 06/28/2021] [Indexed: 12/24/2022] Open
Abstract
Despite significant advances in cancer therapy strategies, breast cancer is one of the most common and lethal malignancies worldwide. Characterization of a new class of RNAs using next-generation sequencing opened new doors toward uncovering etiopathogenesis mechanisms of breast cancer as well as prognostic and diagnostic biomarkers. Circular RNAs (circRNAs) are a novel class of RNA with covalently closed and highly stable structures generated primarily from the back-splicing of precursor mRNAs. Although circRNAs exert their function through various mechanisms, acting as a sponge for miRNAs is their primary mechanism of function. Furthermore, growing evidence has shown that aberrant expression of circRNAs is involved in the various hallmarks of cancers. This paper reviews the biogenesis, characteristics, and mechanism of functions of circRNAs and their deregulation in various cancers. Finally, we focused on the circRNAs roles as a sponge for miRNAs in the development, metastasis, angiogenesis, drug resistance, apoptosis, and immune responses of breast cancer.
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Affiliation(s)
- Liu Gong
- Department of Medical Oncology, Hangzhou Xiasha Hospital, Hangzhou, Zhejiang Province, China
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Zhou J, Chen Z, Zou M, Wan R, Wu T, Luo Y, Wu G, Wang W, Liu T. Prognosis and Immune Infiltration of Chromobox Family Genes in Sarcoma. Front Oncol 2021; 11:657595. [PMID: 34046352 PMCID: PMC8147558 DOI: 10.3389/fonc.2021.657595] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 04/13/2021] [Indexed: 12/16/2022] Open
Abstract
Background Chromobox family genes (CBXs) are known to play roles in numerous modifications of the chromatin in order to inhibit the transcription of target genes. CBXs have been shown to be expressed at high levels in many types of cancer and can also serve as a target gene for therapeutic purposes. However, little is known about the expression and prognostic value of CBXs in human sarcomas. Methods The transcription level of CBXs was analyzed using the Oncomine dataset, and the differential expression of CBXs in sarcoma was reported by the Gene Expression Profiling Interactive Analysis (GEPIA) dataset. We also used the CCLE dataset to evaluate the expression of CBXs in a sarcoma cell line. The prognostic value of CBXs was analyzed using GEPIA and Kaplan–Meier analysis. In addition, the corrections between CBXs and their co-expressed genes were reported using Oncomine and GEPIA datasets. DAVID was used to perform GO function enrichment analysis for the CBXs and their co-expression genes. Finally, TIMER was used to analyze the immune cell infiltration of CBXs in patients with sarcoma. Results HP1-α/β/γ (CBX1/3/5) and CBX4/6/8 were found to be overexpressed in human sarcoma, and CBXs were upregulated in almost all the sarcoma cell line. The expression levels of HP1-α/β/γ (CBX1/3/5) and CBX7 were associated with overall survival (OS) in patients with sarcoma, while high expression levels of CBX7 were related to disease-free survival (DFS). In addition, the expression levels of CBX2/6/7 were related to recurrence-free survival (RFS). We also found that the CBX family was positively correlated with the infiltration of immune cells, including CD8+ T cells, CD4+ T cells, B cells, macrophages, neutrophils, and dendritic cells, in sarcoma. Conclusions The results from the present study indicated that CBXs were significantly associated with prognosis and immunological status in sarcoma. These data suggest that CBXs could serve as potential biomarkers for prognosis and immune infiltration in human sarcoma.
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Affiliation(s)
- Jian Zhou
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Ziyuan Chen
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Ming Zou
- Department of Orthopedics, Brain Hospital of Hunan Province (The Second People's Hospital of Hunan Province), Changsha, China
| | - Rongjun Wan
- Department of Respiratory and Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China
| | - Tong Wu
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yingquan Luo
- Department of General Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Gen Wu
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China.,Clinical Medicine Eight-Year Program, Central South University, Changsha, China
| | - Wanchun Wang
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Tang Liu
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
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