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Yang X, Yan K, Zhan Q, Chen H, Pei CZ, Zhu L. Exploration of Diagnostic Deubiquitinating Enzymes in Endometriosis and Its Immune Infiltration. Biochem Genet 2024:10.1007/s10528-023-10653-w. [PMID: 38302849 DOI: 10.1007/s10528-023-10653-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 12/27/2023] [Indexed: 02/03/2024]
Abstract
The mechanism involved in the pathogenesis of endometriosis is poorly understood. The purpose of this study is to identify key deubiquitinating enzymes (DUBs) for endometriosis diagnosis and elucidate the possible mechanism, offering novel insights for noninvasive early diagnosis and treatment. Four gene expression datasets were employed from the Gene Expression Omnibus to identify differentially expressed genes (DEGs) between endometriosis and normal controls. GO and KEGG pathways were performed for enrichment analysis. Calibration curves, ROC, DCA, and clinical impact curves verified the clinical usefulness of the nomogram model. In addition, the ssGSEA method was conducted to estimate 23 types of immune cells. A specific DUB gene signature was constructed with Lasso regression, univariate logistic regression, and SVM analysis. RT-qPCR validated the expression of biomarkers. A total of 85 endometriosis-related DUBs were identified in the eutopic endometrium. Among them, 20 DUBs were found to be correlated with the severity of endometriosis. A diagnostic risk model based on five DUB-related genes (USP21, USP48, ZRANB1, COPS5, and EIF3F) was developed using lasso-cox regression analysis. The nomogram model exhibited a strong predictive ability to diagnose endometriosis. KEGG analysis revealed that ubiquitin-mediated proteolysis was activated in patients suffering from severe symptoms. Analysis of immune cell infiltration revealed a positive correlation between USP21 and multiple immune cells in the eutopic endometrium. However, EIF3F showed an opposite relationship. Dysregulation of DUBs was related to the immune microenvironment in endometriosis. Results from RT-qPCR confirmed the expression of DEGs in clinical samples. In summary, the diagnostic model for endometriosis constructed using five differentially expressed DUB genes demonstrates strong diagnostic capability, suggesting that these genes could serve as potential candidate biomarkers and therapeutic targets.
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Affiliation(s)
- Xinyun Yang
- Department of Reproductive Endocrinology, Zhejiang University School of Medicine, Women's Hospital, Hangzhou, Zhejiang, People's Republic of China
| | - Kai Yan
- Department of Reproductive Endocrinology, Zhejiang University School of Medicine, Women's Hospital, Hangzhou, Zhejiang, People's Republic of China
| | - Qitao Zhan
- Department of Reproductive Endocrinology, Zhejiang University School of Medicine, Women's Hospital, Hangzhou, Zhejiang, People's Republic of China
| | - Hao Chen
- Department of Pathology, Hangzhou Women's Hospital, Hangzhou, Zhejiang, People's Republic of China
| | - Chang-Zhu Pei
- Reproductive Medicine Center, Yanbian University Hospital, Yanji, Jilin, People's Republic of China.
| | - Linling Zhu
- Department of Reproductive Endocrinology, Zhejiang University School of Medicine, Women's Hospital, Hangzhou, Zhejiang, People's Republic of China.
- Department of Gynecology, Hangzhou Women's Hospital, Hangzhou, Zhejiang, People's Republic of China.
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Yan T, Ma X, Zhou K, Cao J, Tian Y, Zheng H, Tong Y, Xie S, Wang Y, Guo L, Lu R. A novel CSN5/CRT O-GlcNAc/ER stress regulatory axis in platinum resistance of epithelial ovarian cancer. Int J Biol Sci 2024; 20:1279-1296. [PMID: 38385070 PMCID: PMC10878149 DOI: 10.7150/ijbs.89700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 01/19/2024] [Indexed: 02/23/2024] Open
Abstract
Background: High levels of COP9 signalosome subunit 5 (CSN5) in epithelial ovarian cancer (EOC) are associated with poor prognosis and are implicated in mediating platinum resistance in EOC cells. The underlying mechanisms, however, remained undefined. This study aimed to elucidate the molecular process and identify potential therapeutic targets. Methods: RNA-sequencing was used to investigate differentially expressed genes between platinum-resistant EOC cells with CSN5 knockdown and controls. O-GlcNAc proteomics were employed to identify critical modulators downstream of CSN5. The omics findings were confirmed through qRT-PCR and immunoblotting. In vitro and in vivo experiments assessed the sensitivity of resistant EOCs to platinum. Results: We demonstrated an involvement of aberrant O-GlcNAc and endoplasmic reticulum (ER) stress disequilibrium in CSN5-mediated platinum resistance of EOC. Genetic or pharmacologic inhibition of CSN5 led to tumor regression and surmounted the intrinsic EOC resistance to platinum both in vitro and in vivo. Integration of RNA-sequencing and O-GlcNAc proteomics pinpointed calreticulin (CRT) as a potential target of aberrant O-GlcNAc modification. CSN5 upregulated O-GlcNAc-CRT at T346 to inhibit ER stress-induced cell death. Blocking T346 O-GlcNAc-CRT through CSN5 deficiency or T346A mutation resulted in Ca2+ disturbances, followed by ER stress overactivation, mitochondrial dysfunction, and ultimately cell apoptosis. Conclusion: This study reveals that CSN5-mediated aberrant O-GlcNAc-CRT acts as a crucial ER stress checkpoint, governing cell fate response to stress, and emphasizes an unrecognized role for the CSN5/CRT O-GlcNAc/ER stress axis in platinum resistance of EOC.
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Affiliation(s)
- Tianqing Yan
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, No.270, Dong' An Road, Xuhui District, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Xiaolu Ma
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, No.270, Dong' An Road, Xuhui District, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Kaixia Zhou
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, No.270, Dong' An Road, Xuhui District, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Jiazhen Cao
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, No.270, Dong' An Road, Xuhui District, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yanan Tian
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, No.270, Dong' An Road, Xuhui District, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Hui Zheng
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, No.270, Dong' An Road, Xuhui District, Shanghai 200032, China
| | - Ying Tong
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, No.270, Dong' An Road, Xuhui District, Shanghai 200032, China
| | - Suhong Xie
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, No.270, Dong' An Road, Xuhui District, Shanghai 200032, China
| | - Yanchun Wang
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, No.270, Dong' An Road, Xuhui District, Shanghai 200032, China
| | - Lin Guo
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, No.270, Dong' An Road, Xuhui District, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Renquan Lu
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, No.270, Dong' An Road, Xuhui District, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
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