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Gu Y, Zhang J, Ma X, Kim BW, Wang H, Li J, Pan Y, Xu Y, Ding L, Yang L, Guo C, Wu X, Wu J, Wu K, Gan X, Li G, Li L, Forman SJ, Chan WC, Xu R, Huang W. Stabilization of the c-Myc Protein by CAMKIIγ Promotes T Cell Lymphoma. Cancer Cell 2017; 32:115-128.e7. [PMID: 28697340 PMCID: PMC5552197 DOI: 10.1016/j.ccell.2017.06.001] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 04/19/2017] [Accepted: 06/08/2017] [Indexed: 12/20/2022]
Abstract
Although high c-Myc protein expression is observed alongside MYC amplification in some cancers, in most cases protein overexpression occurs in the absence of gene amplification, e.g., T cell lymphoma (TCL). Here, Ca2+/calmodulin-dependent protein kinase II γ (CAMKIIγ) was shown to stabilize the c-Myc protein by directly phosphorylating it at serine 62 (S62). Furthermore, CAMKIIγ was shown to be essential for tumor maintenance. Inhibition of CAMKIIγ with a specific inhibitor destabilized c-Myc and reduced tumor burden. Importantly, high CAMKIIγ levels in patient TCL specimens correlate with increased c-Myc and pS62-c-Myc levels. Together, the CAMKIIγ:c-Myc axis critically influences the development and maintenance of TCL and represents a potential therapeutic target for TCL.
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Affiliation(s)
- Ying Gu
- Molecular and Cellular Biology of Cancer Program & Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Jiawei Zhang
- Molecular and Cellular Biology of Cancer Program & Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Xiaoxiao Ma
- Molecular and Cellular Biology of Cancer Program & Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA; Irell & Manella Graduate School of Biological Sciences, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Byung-Wook Kim
- Molecular and Cellular Biology of Cancer Program & Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA; Irell & Manella Graduate School of Biological Sciences, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Hailong Wang
- Molecular and Cellular Biology of Cancer Program & Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Jinfan Li
- Department of Pathology, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China
| | - Yi Pan
- Department of Pathology, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - Yang Xu
- Department of Hematology, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China; Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China
| | - Lili Ding
- Molecular and Cellular Biology of Cancer Program & Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Lu Yang
- The Integrative Genomics Core, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Chao Guo
- The Integrative Genomics Core, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Xiwei Wu
- The Integrative Genomics Core, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Jun Wu
- Division of Comparative Medicine, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Kirk Wu
- Molecular and Cellular Biology of Cancer Program & Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Xiaoxian Gan
- Molecular and Cellular Biology of Cancer Program & Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Gang Li
- Molecular and Cellular Biology of Cancer Program & Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Ling Li
- Division of Hematopoietic Stem Cell & Leukemia Research, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Stephen J Forman
- Irell & Manella Graduate School of Biological Sciences, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA; Department of Hematology & Hematopoietic Cell Transplantation, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Wing-Chung Chan
- Irell & Manella Graduate School of Biological Sciences, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA; Department of Pathology, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Rongzhen Xu
- Department of Hematology, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China; Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China.
| | - Wendong Huang
- Molecular and Cellular Biology of Cancer Program & Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA; Irell & Manella Graduate School of Biological Sciences, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA.
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Cárdenas D, Vélez G, Orfao A, Herrera MV, Solano J, Olaya M, Uribe AM, Saavedra C, Duarte M, Rodríguez M, López M, Fiorentino S, Quijano S. Epstein-Barr virus-specific CD8(+) T lymphocytes from diffuse large B cell lymphoma patients are functionally impaired. Clin Exp Immunol 2015; 182:173-83. [PMID: 26174440 PMCID: PMC4608507 DOI: 10.1111/cei.12682] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/09/2015] [Indexed: 12/13/2022] Open
Abstract
Epstein-Barr virus (EBV) is a persistent virus with oncogenic capacity that has been implicated in the development of aggressive B cell lymphomas, primarily in immunosuppressed individuals, although it can be present in immunocompetent individuals. Changes in the function and clonal diversity of T lymphocytes might be implied by viral persistence and lymphoma development. The aim of the present study was to evaluate the frequency, phenotype, function and clonotypical distribution of EBV-specific T cells after peripheral blood stimulation with a virus lysate in newly diagnosed patients with diffuse large B cell lymphoma (DLBCL) aged more than 50 years without prior histories of clinical immunosuppression compared with healthy controls. Our results showed impaired EBV-specific immune responses among DLBCL patients that were associated primarily with decreased numbers of central and effector memory CD8(+) T lymphocytes. In contrast to healthy controls, only a minority of the patients showed CD4(+)/tumour necrosis factor (TNF)-α(+) T cells expressing T cell receptor (TCR)-Vβ17 and CD8(+)/TNF-α(+) T cells with TCR-Vβ5·2, Vβ9 and Vβ18 in response to EBV. Notably, the production of TNF-α was undetectable among TCR-Vβ5·3(+), Vβ11(+), Vβ12(+), Vβ16(+) and Vβ23(+) CD8(+) T cells. In addition, we observed decreased numbers of CD4(+)/TNF-α(+) and CD8(+)/TNF-α(+), CD8(+)/interleukin (IL)-2(+) and CD8(+)/TNF-α(+)/IL-2(+) T lymphocytes in the absence of T cells capable of producing TNF-α, IL-2 and IFN-γ after EBV stimulation simultaneously. Moreover, DLBCL patients displayed higher IL-10 levels both under baseline conditions and after EBV stimulation. These findings were also observed in patients with positive EBV viral loads. Prospective studies including a large number of patients are needed to confirm these findings.
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MESH Headings
- Aged
- Aged, 80 and over
- CD4-Positive T-Lymphocytes/immunology
- CD4-Positive T-Lymphocytes/metabolism
- CD8-Positive T-Lymphocytes/immunology
- CD8-Positive T-Lymphocytes/metabolism
- CD8-Positive T-Lymphocytes/virology
- Epstein-Barr Virus Infections/blood
- Epstein-Barr Virus Infections/immunology
- Epstein-Barr Virus Infections/virology
- Female
- Flow Cytometry
- Herpesvirus 4, Human/immunology
- Herpesvirus 4, Human/physiology
- Host-Pathogen Interactions/immunology
- Humans
- Interferon-gamma/immunology
- Interferon-gamma/metabolism
- Interleukin-10/immunology
- Interleukin-10/metabolism
- Interleukin-2/immunology
- Interleukin-2/metabolism
- Lymphocyte Count
- Lymphoma, Large B-Cell, Diffuse/blood
- Lymphoma, Large B-Cell, Diffuse/immunology
- Lymphoma, Large B-Cell, Diffuse/virology
- Male
- Middle Aged
- Receptors, Antigen, T-Cell, alpha-beta/immunology
- Receptors, Antigen, T-Cell, alpha-beta/metabolism
- Tumor Necrosis Factor-alpha/immunology
- Tumor Necrosis Factor-alpha/metabolism
- Viral Load/immunology
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Affiliation(s)
- D Cárdenas
- Grupo De Inmunobiología Y Biología Celular Departamento De Microbiología Facultad De Ciencias Pontificia Universidad JaverianaBogotá, Colombia
| | - G Vélez
- Grupo De Inmunobiología Y Biología Celular Departamento De Microbiología Facultad De Ciencias Pontificia Universidad JaverianaBogotá, Colombia
| | - A Orfao
- Servicio General De Citometría Y Departamento De Medicina, Centro De Investigación Del Cáncer (Instituto De Biología Molecular Y Celular Del Cáncer and IBSAL; CSIC-USAL), Universidad De SalamancaSalamanca, España
| | - M V Herrera
- Servicio De Hematología Hospital Universitario San Ignacio-Centro De Oncología Javeriano
| | - J Solano
- Servicio De Hematología Hospital Universitario San Ignacio-Centro De Oncología Javeriano
| | - M Olaya
- Departamento de Patología, Pontificia Universidad Javeriana, Hospital Universitario San Ignacio
| | - A M Uribe
- Departamento de Patología, Pontificia Universidad Javeriana, Hospital Universitario San Ignacio
| | - C Saavedra
- Grupo De Patología Fundación Santa Fe De Bogotá
| | - M Duarte
- Servicio De Hematología Fundación Santa Fe De BogotáBogotá, Colombia
| | - M Rodríguez
- Servicio De Hematología Fundación Santa Fe De BogotáBogotá, Colombia
| | - M López
- Fundación Cardiovascular De ColombiaFloridablanca, Colombia
| | - S Fiorentino
- Grupo De Inmunobiología Y Biología Celular Departamento De Microbiología Facultad De Ciencias Pontificia Universidad JaverianaBogotá, Colombia
| | - S Quijano
- Grupo De Inmunobiología Y Biología Celular Departamento De Microbiología Facultad De Ciencias Pontificia Universidad JaverianaBogotá, Colombia
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