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Wu R, Wu X, Zou L, Zhou L, Mao Y. DDB1 regulates the activation-induced apoptosis of T cells via downregulating the expression of histone methyltransferase SETD7. Med Oncol 2023; 40:146. [PMID: 37043057 DOI: 10.1007/s12032-023-02015-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 03/27/2023] [Indexed: 04/13/2023]
Abstract
The damaged DNA-binding protein 1 (DDB1) enhances the survival and maintenance of multipotent cells through promoting the Cullin 4 E3 ligase complex-dependent ubiquitination and subsequent degradation of downstream substrates. Naive T cells could be activated and differentiated into effector and memory T cells by exogenous stimulatory molecules, which are essential in immune response and inflammation. However, possible regulation and molecular mechanisms of DDB1 in T-cell activation-induced apoptosis were largely unknown. Here, in this study, we uncovered that DDB1 could downregulate the expression of histone methyltransferase SETD7 through decreasing its mRNA level and then regulated activation-induced apoptosis of T-cell line Jurkat cells. Furthermore, RNA-sequencing assay on activated Jurkat cells confirmed that the SETD7 attenuated the activation of Jurkat cells. Our study revealed the non-enzymatic functions of DDB1 on the activation-induced apoptosis of T cells.
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Affiliation(s)
- Ruirong Wu
- Department of Medical Oncology, Affiliated Hospital of Jiangnan University, Wuxi, 214028, Jiangsu, China
| | - Xiufeng Wu
- Department of Pharmacy, Affiliated Hospital of Jiangnan University, Wuxi, 214028, Jiangsu, China
| | - Lu Zou
- Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou, 215123, Jiangsu, China
| | - Liang Zhou
- Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou, 215123, Jiangsu, China.
| | - Yong Mao
- Department of Medical Oncology, Affiliated Hospital of Jiangnan University, Wuxi, 214028, Jiangsu, China.
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Vijayasimha K, Dolan BP. The Many Potential Fates of Non-Canonical Protein Substrates Subject to NEDDylation. Cells 2021; 10:2660. [PMID: 34685640 PMCID: PMC8534235 DOI: 10.3390/cells10102660] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/28/2021] [Accepted: 09/30/2021] [Indexed: 02/06/2023] Open
Abstract
Neuronal precursor cell-expressed developmentally down-regulated protein 8 (NEDD8) is a ubiquitin-like protein (UBL) whose canonical function involves binding to, and thus, activating Cullin-Ring finger Ligases (CRLs), one of the largest family of ubiquitin ligases in the eukaryotic cell. However, in recent years, several non-canonical protein substrates of NEDD8 have been identified. Here we attempt to review the recent literature regarding non-canonical NEDDylation of substrates with a particular focus on how the covalent modification of NEDD8 alters the protein substrate. Like much in the study of ubiquitin and UBLs, there are no clear and all-encompassing explanations to satisfy the textbooks. In some instances, NEDD8 modification appears to alter the substrates localization, particularly during times of stress. NEDDylation may also have conflicting impacts upon a protein's stability: some reports indicate NEDDylation may protect against degradation whereas others show NEDDylation can promote degradation. We also examine how many of the in vitro studies measuring non-canonical NEDDylation were conducted and compare those conditions to those which may occur in vivo, such as cancer progression. It is likely that the conditions used to study non-canonical NEDDylation are similar to some types of cancers, such as glioblastoma, colon and rectal cancers, and lung adenocarcinomas. Although the full outcomes of non-canonical NEDDylation remain unknown, our review of the literature suggests that researchers keep an open mind to the situations where this modification occurs and determine the functional impacts of NEDD8-modification to the specific substrates which they study.
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Affiliation(s)
| | - Brian P. Dolan
- Department of Biomedical Sciences, Carlson College of Veterinary Medicine, Oregon State University, Corvallis, OR 97331, USA;
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Li Z, Hu N, Dai L, Hou X, Hu W, Liang W, Wang X. Cullin-5 (CUL5) as a potential prognostic marker in a pan-cancer analysis of human tumors. Bioengineered 2021; 12:5348-5360. [PMID: 34415831 PMCID: PMC8806887 DOI: 10.1080/21655979.2021.1940042] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
There is some evidence supporting an association between Cullin-5 (CUL5) and cancer, but no research using pan-cancer analysis has been conducted previously. We therefore investigated the oncogenic role of CUL5 in 33 tumors from the Gene Expression Omnibus and The Cancer Genome Atlas databases. Many cancers reduce CUL5 levels, and the prognosis of certain cancers is vitally linked with CUL5 expression. CUL5 expression is associated with CD8 + T-cell infiltration levels in uveal melanomas and head and neck squamous cell carcinomas, and we observed a positive relationship between CUL5 and Tcm (T central memory) cells, and a negative relationship between T helper (Th) cells and pDC (plasmacytoid DC). CUL5 had negative associations with NK cells, NK CD56bright cells, NK CD56dim cells, Tregs, cytotoxic cells, and Th17 cells. Functions relating to protein processing and ubiquitin were included in the CUL5 functional mechanisms. The top 100 genes that are most strongly related to CUL5 were identified, and enrichment analysis indicated that the biological process with the closest relationship was neddylation, related pathways included the TGF-beta signaling pathway and intracellular receptor signaling pathway. CUL5 is related to biological cell behaviors such as chromosome segregation and positive regulation of chromosome organization. As the first study to perform a pan-cancer analysis of CUL5, the present findings will improve the understanding of the oncogenic role of CUL5 in different tumors.
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Affiliation(s)
- Zian Li
- Department of Neurosurgery, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China.,Henan International Joint Laboratory of Glioma Metabolism and Microenvironment Research, Zhengzhou, Henan, China
| | - Nan Hu
- Department of Neurosurgery, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China.,Henan International Joint Laboratory of Glioma Metabolism and Microenvironment Research, Zhengzhou, Henan, China
| | - Lirui Dai
- Department of Neurosurgery, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China.,Henan International Joint Laboratory of Glioma Metabolism and Microenvironment Research, Zhengzhou, Henan, China
| | - Xuelei Hou
- Department of Neurosurgery, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China.,Henan International Joint Laboratory of Glioma Metabolism and Microenvironment Research, Zhengzhou, Henan, China
| | - Weihua Hu
- Henan International Joint Laboratory of Glioma Metabolism and Microenvironment Research, Zhengzhou, Henan, China
| | - Wulong Liang
- Henan International Joint Laboratory of Glioma Metabolism and Microenvironment Research, Zhengzhou, Henan, China
| | - Xinjun Wang
- Department of Neurosurgery, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China.,Henan International Joint Laboratory of Glioma Metabolism and Microenvironment Research, Zhengzhou, Henan, China
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