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Dedobbeleer M, Willems E, Lambert J, Lombard A, Digregorio M, Lumapat PN, Di Valentin E, Freeman S, Goffart N, Scholtes F, Rogister B. MKP1 phosphatase is recruited by CXCL12 in glioblastoma cells and plays a role in DNA strand breaks repair. Carcinogenesis 2020; 41:417-429. [PMID: 31504251 DOI: 10.1093/carcin/bgz151] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 08/10/2019] [Accepted: 08/29/2019] [Indexed: 12/11/2022] Open
Abstract
Glioblastoma (GBM) is the most frequent and aggressive primary tumor in the central nervous system. Previously, the secretion of CXCL12 in the brain subventricular zones has been shown to attract GBM cells and protect against irradiation. However, the exact molecular mechanism behind this radioprotection is still unknown. Here, we demonstrate that CXCL12 modulates the phosphorylation of MAP kinases and their regulator, the nuclear MAP kinase phosphatase 1 (MKP1). We further show that MKP1 is able to decrease GBM cell death and promote DNA repair after irradiation by regulating major apoptotic players, such as Jun-N-terminal kinase, and by stabilizing the DNA repair protein RAD51. Increases in MKP1 levels caused by different corticoid treatments should be reexamined for GBM patients, particularly during their radiotherapy sessions, in order to prevent or to delay the relapses of this tumor.
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Affiliation(s)
- Matthias Dedobbeleer
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Estelle Willems
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Jeremy Lambert
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Arnaud Lombard
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium.,Department of Neurosurgery, CHU of Liège, Liège, Belgium
| | - Marina Digregorio
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Paul Noel Lumapat
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | | | - Stephen Freeman
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Nicolas Goffart
- The T&P Bohnenn Laboratory for Neuro-Oncology, Department of Neurosurgery, UMC Utrecht, Utrecht, The Netherlands
| | - Felix Scholtes
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium.,Department of Neurosurgery, CHU of Liège, Liège, Belgium
| | - Bernard Rogister
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium.,Department of Neurology, CHU of Liège, Liège, Belgium
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Phosphatases and solid tumors: focus on glioblastoma initiation, progression and recurrences. Biochem J 2017; 474:2903-2924. [PMID: 28801478 DOI: 10.1042/bcj20170112] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 06/21/2017] [Accepted: 06/23/2017] [Indexed: 12/15/2022]
Abstract
Phosphatases and cancer have been related for many years now, as these enzymes regulate key cellular functions, including cell survival, migration, differentiation and proliferation. Dysfunctions or mutations affecting these enzymes have been demonstrated to be key factors for oncogenesis. The aim of this review is to shed light on the role of four different phosphatases (PTEN, PP2A, CDC25 and DUSP1) in five different solid tumors (breast cancer, lung cancer, pancreatic cancer, prostate cancer and ovarian cancer), in order to better understand the most frequent and aggressive primary cancer of the central nervous system, glioblastoma.
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Willems E, Lombard A, Dedobbeleer M, Goffart N, Rogister B. The Unexpected Roles of Aurora A Kinase in Gliobastoma Recurrences. Target Oncol 2016; 12:11-18. [DOI: 10.1007/s11523-016-0457-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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