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Li R, Chen Y, Yang B, Li Z, Li P, Chen Y, Li J, He J, Wu Y, Sun Y, Wang X, Guo X, Zhang W, Zhao Y, Guo G. DTX2 promotes glioma development via regulation of HLTF. Biol Direct 2024; 19:2. [PMID: 38163902 PMCID: PMC10759338 DOI: 10.1186/s13062-023-00447-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 12/19/2023] [Indexed: 01/03/2024] Open
Abstract
BACKGROUND Human Deltex 2 (DTX2) is a ubiquitin E3 ligase that functions as an oncogene and has been shown to participate in many human cancers. However, the role of DTX2 in glioma progression has remained obscure. In this study, we explore the mechanism underlying the function of DTX2 in glioma progression. METHODS The associations between DTX2 expression and clinical characteristics of glioma were determined by bioinformatic analysis of data from The Cancer Genome Atlas and Human Protein Atlas. The expression of DTX2 in glioma tissues was detected using immunohistochemistry and western blotting. Lentivirus-mediated gene knockdown and overexpression were used to determine the effects of DTX2 and helicase-like transcription element (HLTF) on glioma cell proliferation and migration with CCK-8, cell colony formation, transwell, and wound healing assays; flow cytometry in vitro; and animal models in vivo. The interaction of the DTX2 and HLTF proteins was verified by immunoprecipitation assay and confocal microscopy. RESULTS DTX2 was highly expressed in glioma samples, and this was correlated with worse overall survival. Silencing of DTX2 suppressed glioma cell viability, colony formation, and migration and induced cell apoptosis. In vitro ubiquitination assays confirmed that DTX2 could downregulate HLTF protein levels by increasing ubiquitination of the HLTF protein. We also observed that HLTF inhibited proliferation and migration of glioma cells. Subcutaneous xenografts with DTX2-overexpressing U87 cells showed significantly increased tumor volumes and weights. CONCLUSIONS We have identified DTX2/HLTF as a new axis in the development of glioma that could serve as a prognostic or therapeutic marker.
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Affiliation(s)
- Ren Li
- School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Yang Chen
- Department of Neurosurgery, First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Biao Yang
- Department of Neurosurgery, First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Ziao Li
- Department of Neurosurgery, First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Peize Li
- Department of Neurosurgery, First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Yu Chen
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
- China National Clinical Research Center for Neurological Diseases, Beijing, 100070, China
| | - Jiayu Li
- Department of Neurosurgery, First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Jianhang He
- Department of Neurosurgery, First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Yongqiang Wu
- Department of Emergency, First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Yanqi Sun
- Department of Emergency, First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Xiaogang Wang
- Department of Neurosurgery, First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Xiaolong Guo
- Department of Neurosurgery, First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Wenju Zhang
- Department of Neurosurgery, First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Yuanli Zhao
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
- China National Clinical Research Center for Neurological Diseases, Beijing, 100070, China
| | - Geng Guo
- Department of Emergency, First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, China.
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