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He W, Zhang Z, Tan Z, Liu X, Wang Z, Xiong B, Shen X, Zhu X. PSMB2 plays an oncogenic role in glioma and correlates to the immune microenvironment. Sci Rep 2024; 14:5861. [PMID: 38467767 PMCID: PMC10928079 DOI: 10.1038/s41598-024-56493-5] [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: 12/07/2023] [Accepted: 03/07/2024] [Indexed: 03/13/2024] Open
Abstract
There has been an upward trend in the incidence of glioma, with high recurrence and high mortality. The beta subunits of the 20S proteasome are encoded by the proteasome beta (PSMB) genes and may affect the proteasome's function in glioma, assembly and inhibitor binding. This study attempted to reveal the function of the proliferation and invasion of glioma cells, which is affected by proteasome 20S subunit beta 2 (PSMB2). We subjected the data downloaded from the TCGA database to ROC, survival, and enrichment analyses. After establishing the stable PSMB2 knockdown glioma cell line. We detect the changes in the proliferation, invasion and migration of glioma cells by plate colony formation assay, transwell assay, wound healing assay and flow cytometry and PSMB2 expression was verified by quantitative PCR and Western blotting to identify the mRNA and protein levels. PSMB2 expression was higher in glioma tissues, and its expression positively correlated with poor prognosis and high tumor grade and after PSMB2 knockdown, the proliferation, invasion and migration of glioma cells were weakened.
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Affiliation(s)
- Wei He
- Department of Neurosurgery, The Second affiliated hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
- Institute of Neuroscience, Nanchang University, Nanchang, Jiangxi, China
| | - Zhe Zhang
- Department of Neurosurgery, The Second affiliated hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
- Institute of Neuroscience, Nanchang University, Nanchang, Jiangxi, China
| | - ZiLong Tan
- Department of Neurosurgery, The Second affiliated hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - XinXian Liu
- Department of Neurosurgery, The Second affiliated hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - ZeKun Wang
- Department of Neurosurgery, The Second affiliated hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - Bo Xiong
- Department of Neurosurgery, The People's Hospital of Gao an, Yichun, China
| | - XiaoLi Shen
- Department of Neurosurgery, The Second affiliated hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - XinGen Zhu
- Department of Neurosurgery, The Second affiliated hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China.
- Institute of Neuroscience, Nanchang University, Nanchang, Jiangxi, China.
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Yu C, Wang X, Huang L. Developing a Targeted Quantitative Strategy for Sulfoxide-Containing MS-Cleavable Cross-Linked Peptides to Probe Conformational Dynamics of Protein Complexes. Anal Chem 2022; 94:4390-4398. [PMID: 35193351 DOI: 10.1021/acs.analchem.1c05298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In recent years, cross-linking mass spectrometry (XL-MS) has made enormous strides as a technology for probing protein-protein interactions (PPIs) and elucidating architectures of multisubunit assemblies. To define conformational and interaction dynamics of protein complexes under different physiological conditions, various quantitative cross-linking mass spectrometry (QXL-MS) strategies based on stable isotope labeling have been developed. These QXL-MS approaches have effectively allowed comparative analysis of cross-links to determine their relative abundance changes at global scales. Although successful, it remains challenging to consistently obtain quantitative measurements on low-abundant cross-links. Therefore, targeted QXL-MS is needed to enable MS "Western" analysis of cross-links to enhance sensitivity and reliability in quantitation. To this end, we have established a robust parallel reaction monitoring (PRM)-based targeted QXL-MS platform using sulfoxide-containing MS-cleavable cross-linker disuccinimidyl sulfoxide (DSSO), permitting label-free comparative analysis of selected cross-links across multiple samples. In addition, we have applied this methodology to study phosphorylation-dependent conformational dynamics of the human 26S proteasome. The PRM-based targeted QXL-MS analytical platform described here is applicable for all sulfoxide-containing MS-cleavable cross-linkers and can be directly adopted for comparative studies of protein-protein interactions in various cellular contexts.
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Affiliation(s)
- Clinton Yu
- Department of Physiology & Biophysics, University of California, Irvine, Medical Science I, D233, Irvine, California 92697-4560, United States
| | - Xiaorong Wang
- Department of Physiology & Biophysics, University of California, Irvine, Medical Science I, D233, Irvine, California 92697-4560, United States
| | - Lan Huang
- Department of Physiology & Biophysics, University of California, Irvine, Medical Science I, D233, Irvine, California 92697-4560, United States
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