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Cao K, Liu Z, Liu J, Hu Q, Shan W, Hu B, Shi H, Zhang B. Constitutive photomorphogenic protein 1 ubiquitinates interleukin-1 receptor accessory protein in human liver cancer. J Cancer Res Clin Oncol 2023; 149:16247-16260. [PMID: 37700160 DOI: 10.1007/s00432-023-05367-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: 07/29/2023] [Accepted: 08/29/2023] [Indexed: 09/14/2023]
Abstract
BACKGROUND Constitutive photomorphogenic protein 1 (COP1) plays a pivotal role in the development and progression of several human cancers and is reported to be upregulated in liver cancer. However, the role of COP1 in human liver cancer is unclear. METHODS We analyzed the COP1 expression in normal liver and liver cancer tissue samples using western blot and immunohistochemical analysis. We overexpressed and silenced COP1 in HepG2 and Huh7 cells and analyzed the effect on liver cancer cell proliferation. Additionally, COP1 was used as a bait to screen COP1-interacting proteins in a human cDNA library in a yeast two-hybrid screen and the results were confirmed with co-immunoprecipitation (co-IP) assays. Moreover, immunofluorescence staining was performed to assess co-localization. The protein levels of COP1 and mIL1RAcP were determined in clinical samples. RESULTS COP1 was upregulated in liver cancer samples compared to that in normal tissue samples. COP1 overexpression promoted proliferation of liver cancer cells, while COP1 knockdown exerted the opposite effect. Yeast two-hybrid screen identified interleukin-1 receptor accessory protein (IL1RAP) as a potential COP1-interacting protein. Co-IP assays further confirmed that COP1 interacts with both preIL1RAP and membrane-bound form of IL1RAP (mIL1RAP). Furthermore, COP1 upregulated mIL1RAP protein levels and promoted nuclear translocation and activation of the nuclear factor kappa B (NF-κB) (p50/p65) dimer. Additionally, we demonstrated that COP1 regulated mIL1RAP expression through K63-linked polyubiquitination, suggesting that COP1 plays a role in stabilizing mIL1RAP. Finally, the protein levels of COP1 and mIL1RAcP were found to be positively correlated in clinical samples. CONCLUSION COP1 regulates IL1RAP, which in turn results in activation of the NF-κB signaling. Our findings suggest that the COP1/IL1RAP/NF-κB axis promotes proliferation of liver cancer cells and is a potential target for the treatment of liver cancer.
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Affiliation(s)
- Kuan Cao
- Institute of Digestive Diseases, Xuzhou Medical University, No. 84 West Huaihai Road, Xuzhou, 221002, Jiangsu, China
- Research Center of Digestive Diseases, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Zhiyi Liu
- Institute of Digestive Diseases, Xuzhou Medical University, No. 84 West Huaihai Road, Xuzhou, 221002, Jiangsu, China
- Research Center of Digestive Diseases, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Jin Liu
- Institute of Digestive Diseases, Xuzhou Medical University, No. 84 West Huaihai Road, Xuzhou, 221002, Jiangsu, China
- Research Center of Digestive Diseases, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
- Hepatobiliary Pancreatic Surgery, The Second Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Qinghe Hu
- Institute of Digestive Diseases, Xuzhou Medical University, No. 84 West Huaihai Road, Xuzhou, 221002, Jiangsu, China
- Research Center of Digestive Diseases, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Wengang Shan
- Institute of Digestive Diseases, Xuzhou Medical University, No. 84 West Huaihai Road, Xuzhou, 221002, Jiangsu, China
- Research Center of Digestive Diseases, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Bin Hu
- Institute of Digestive Diseases, Xuzhou Medical University, No. 84 West Huaihai Road, Xuzhou, 221002, Jiangsu, China
- Research Center of Digestive Diseases, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Hengliang Shi
- Institute of Digestive Diseases, Xuzhou Medical University, No. 84 West Huaihai Road, Xuzhou, 221002, Jiangsu, China.
- Research Center of Digestive Diseases, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China.
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China.
- Central Laboratory, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China.
| | - Bin Zhang
- Research Center of Digestive Diseases, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China.
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China.
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Pal A, Karanwal S, Chera JS, Batra V, Kumaresan A, Sarwalia P, Datta TK, Kumar R. Circulatory extracellular vesicle derived miR-195-5p promotes cellular apoptosis and suppresses cell proliferation in the buffalo endometrial primary cell culture. Sci Rep 2023; 13:16703. [PMID: 37794118 PMCID: PMC10551009 DOI: 10.1038/s41598-023-43530-y] [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: 06/30/2023] [Accepted: 09/25/2023] [Indexed: 10/06/2023] Open
Abstract
In pregnant animals, communication between the mother and conceptus occurs via extracellular vesicles (EVs) that carry several biomolecules such as nucleic acids (miRNAs, mRNAs), proteins, and lipids. At the time of implantation, the endometrium undergoes several morphological and physiological changes, such as angiogenesis, apoptosis, and cell proliferation regulation at the implantation site, to attain a receptive state. This study was conducted to detect pregnancy-specific miRNAs derived from extracellular vesicles in the systemic circulation of Bubalus bubalis (water buffalo) and to assess their functional significance in the modulation of endometrial primary cells. The extracellular vesicles were isolated from the blood plasma using a precipitation-based method and further characterized by various methods such as Differential light scattering, Nanoparticle tracking assay, Western blot, and transmission electron microscopy. The relative expression of the selected extracellular vesicles associated miRNAs (EV-miRNA) at different intervals (days 15, 19, 25, and 30) post artificial insemination (AI) was analyzed using RT-qPCR, and expression of miR-195-5p was found to be significantly higher (P < 0.01) in pregnant animals on day 19 post AI (implantation window) as compared to day 15 post AI. The elevated expression might indicate the involvement of this miRNA in the maternal-conceptus cross-talk occurring during the implantation period. The KEGG pathway enrichment and Gene Ontology analyses of the miR-195-5p target genes revealed that these were mostly involved in the PI3-Akt, MAPK, cell cycle, ubiquitin-mediated proteolysis, and mTOR signaling pathways, which are related to the regulation of cell proliferation. Transfecting the in vitro cultured cells with miR-195-5p mimic significantly suppressed (P < 0.05) the expression of its target genes such as YWHAQ, CDC27, AKT-3, FGF-7, MAPK8, SGK1, VEGFA, CACAND1, CUL2, MKNK1, and CACAN2D1. Furthermore, the downregulation of the miR-195-5p target genes was positively correlated with a significant increase in the apoptotic rate and a decrease in the proliferation. In conclusion, the current findings provide vital information on the presence of EV miR-195-5p in maternal circulation during the implantation window indicating its important role in the modulation of buffalo endometrium epithelial cells via promoting cell death. Altogether, the milieu of miR-195-5p may serve as a novel and potential molecular factor facilitating the implantation of the early embryo during the establishment of pregnancy in buffaloes. Thus, miR-195-5p may be identified as a unique circulatory EV biomarker related to establishing pregnancy in buffaloes as early as day 19 post-AI.
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Affiliation(s)
- Ankit Pal
- Animal Genomics Laboratory, Animal Biotechnology Centre, National Dairy Research Institute, Karnal, India
| | - Seema Karanwal
- Animal Genomics Laboratory, Animal Biotechnology Centre, National Dairy Research Institute, Karnal, India
| | - Jatinder Singh Chera
- Animal Genomics Laboratory, Animal Biotechnology Centre, National Dairy Research Institute, Karnal, India
| | - Vipul Batra
- Animal Genomics Laboratory, Animal Biotechnology Centre, National Dairy Research Institute, Karnal, India
| | - Arumugam Kumaresan
- Theriogenelogy Laboratory, SRS of National Dairy Research Institute, Bengaluru, India
| | - Parul Sarwalia
- Animal Genomics Laboratory, Animal Biotechnology Centre, National Dairy Research Institute, Karnal, India
| | - Tirtha K Datta
- Animal Genomics Laboratory, Animal Biotechnology Centre, National Dairy Research Institute, Karnal, India
| | - Rakesh Kumar
- Animal Genomics Laboratory, Animal Biotechnology Centre, National Dairy Research Institute, Karnal, India.
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Wang R, Gou Y, Tang M, Wang K, He H, Yang J, Yang Y, Jing Y, Tang Q. A mutator-derived prognostic eRNA signature provides insight into the pathogenesis of breast cancer. Exp Cell Res 2023; 431:113754. [PMID: 37611728 DOI: 10.1016/j.yexcr.2023.113754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 07/23/2023] [Accepted: 08/11/2023] [Indexed: 08/25/2023]
Abstract
Abundant evidence suggests that enhancer RNA (eRNA) is closely related to tumorigenesis, and the role of eRNA transcription in promoting genomic instability in cancers is gradually unveiled. However, research on the evaluation of the prognostic value and molecular mechanisms of genomic instability associated eRNAs in breast cancer is long overdue. Here, we integratively analyzed eRNA expression and somatic mutation profiles in breast cancer genome. We identified genomic instability associated eRNAs and developed a prognostic signature based on these eRNAs with the area under the curve (AUC) around 0.8 at 9-year survival. We further found the prognostic value of this signature is independent of common clinical factors and is better than TP53 status. Higher expression of genomic instability associated genes in the high-risk group was observed, suggesting that this eRNA signature may serve as an indicator of genomic instability in breast cancer. We found prognostic eRNA co-expressed genes are mainly enriched in Gene set 'Breast Cancer 8P12-P11 Amplicon', Gene set 'Metabolism of lipids' and GO process 'Ubiquitin protein ligase binding'. Furthermore, 11 eRNA-signature regulated genes are identified by assessing promoter-enhancer interaction. Among these genes, F11R, BHLHE40, and NECTIN4 are previously reported oncogenes and EGOT is a tumor suppressor gene, indicating the direct roles of eRNAs in tumorigenesis.
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Affiliation(s)
- Rui Wang
- Live-stock and Poultry Multi-omics Key Laboratory of Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China; Animal Breeding and Genetics Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yuwei Gou
- Live-stock and Poultry Multi-omics Key Laboratory of Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China; Animal Breeding and Genetics Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agricultural University, Chengdu, 611130, China
| | - Minzi Tang
- China Certification & Inspection Group Sichuan CO., LTD, Chengdu, 610063, China
| | - Kai Wang
- Live-stock and Poultry Multi-omics Key Laboratory of Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China; Animal Breeding and Genetics Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agricultural University, Chengdu, 611130, China
| | - Hengdong He
- Live-stock and Poultry Multi-omics Key Laboratory of Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China; Animal Breeding and Genetics Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jing Yang
- Live-stock and Poultry Multi-omics Key Laboratory of Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China; Animal Breeding and Genetics Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yuan Yang
- Live-stock and Poultry Multi-omics Key Laboratory of Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China; Animal Breeding and Genetics Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yunhan Jing
- Live-stock and Poultry Multi-omics Key Laboratory of Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China; Animal Breeding and Genetics Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agricultural University, Chengdu, 611130, China
| | - Qianzi Tang
- Live-stock and Poultry Multi-omics Key Laboratory of Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China; Animal Breeding and Genetics Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agricultural University, Chengdu, 611130, China.
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Zhang W, Wu Z. COP1 facilitates the proliferation, invasion, and migration of glioma cells by ubiquitination of DLG3 protein. Neurol Res 2023; 45:858-866. [PMID: 37356109 DOI: 10.1080/01616412.2022.2123173] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 09/05/2022] [Indexed: 06/27/2023]
Abstract
OBJECTIVE Glioma is a heterogeneous group of brain tumors that remains largely incurable. Constitutive photomorphogenic 1 (COP1) acts as an E3 ligase for tumor regulation. This study explored the mechanism of COP1 in glioma cell proliferation, invasion, and migration. METHODS COP1 and discs large homolog 3 (DLG3) expressions in glioma cells were determined using RT-qPCR or Western blotting, followed by transfection of si-COP1 or si-DLG3 into LN229 cells. Glioma cell proliferation, invasion, and migration were measured using CCK-8, EdU staining, and Transwell assays. The binding of COP1 and DLG3 was verified using co-immunoprecipitation. The ubiquitination level of DLG3 protein was tested after MG132 treatment. Functional rescue experiments were performed to validate the role of DLG3 in the regulation of glioma cells by COP1. RESULTS COP1 was highly expressed in glioma cells. COP1 silencing repressed glioma cell proliferation, invasion, and migration. COP1 bound to DLG3 protein and enhanced the ubiquitination of DLG3. DLG3 silencing reversed the inhibitory effect of COP1 silencing on glioma cell proliferation, invasion, and migration. CONCLUSION COP1 facilitated the proliferation, invasion, and migration of glioma cells by ubiquitination of DLG3 protein.
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Affiliation(s)
- Weixin Zhang
- Department of Neurosurgery, the Inter Mongolia ChiFeng City Hospital, Chifeng, Inner Mongolia Autonomous Region, China
| | - Zhongbao Wu
- Department of Neurosurgery, the Third People's Hospital of Datong City, Datong, Shanxi Province, China
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Zhu XZ, Qiu Z, Lei SQ, Leng Y, Li WY, Xia ZY. The Role of P53 in Myocardial Ischemia-Reperfusion Injury. Cardiovasc Drugs Ther 2023:10.1007/s10557-023-07480-x. [PMID: 37389674 DOI: 10.1007/s10557-023-07480-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/09/2023] [Indexed: 07/01/2023]
Abstract
PURPOSE P53 is one of the key tumor suppressors. In normal cells, p53 is maintained at low levels by the ubiquitination of the ubiquitinated ligase MDM2. In contrast, under stress conditions such as DNA damage and ischemia, the interaction between p53 and MDM2 is blocked and activated by phosphorylation and acetylation, thereby mediating the trans-activation of p53 through its target genes to regulate a variety of cellular responses. Previous studies have shown that the expression of p53 is negligible in normal myocardium, tends to increase in myocardial ischemia and is maximally induced in ischemia-reperfused myocardium, demonstrating a possible key role of p53 in the development of MIRI. In this review, we detail and summarize recent studies on the mechanism of action of p53 in MIRI and describe the therapeutic agents targeting the relevant targets to provide new strategies for the prevention and treatment of MIRI. METHODS We collected 161 relevant papers mainly from Pubmed and Web of Science (search terms "p53" and "myocardial ischemia-reperfusion injury"). After that, we selected pathway studies related to p53 and classified them according to their contents. We eventually analyzed and summarized them. RESULTS AND CONCLUSION In this review, we detail and summarize recent studies on the mechanism of action of p53 in MIRI and validate its status as an important intermediate affecting MIRI. On the one hand, p53 is regulated and modified by multiple factors, especially non-coding RNAs; on the other hand, p53 regulates apoptosis, programmed necrosis, autophagy, iron death and oxidative stress in MIRI through multiple pathways. More importantly, several studies have reported medications targeting p53-related therapeutic targets. These medications are expected to be effective options for the alleviation of MIRI, but further safety and clinical studies are needed to convert them into clinical applications.
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Affiliation(s)
- Xi-Zi Zhu
- Department of Anesthesiology, Renmin Hospital of Wuhan University, 99 Zhang Zhidong Road, Wuhan, Hubei, 430060, People's Republic of China
| | - Zhen Qiu
- Department of Anesthesiology, Renmin Hospital of Wuhan University, 99 Zhang Zhidong Road, Wuhan, Hubei, 430060, People's Republic of China
| | - Shao-Qing Lei
- Department of Anesthesiology, Renmin Hospital of Wuhan University, 99 Zhang Zhidong Road, Wuhan, Hubei, 430060, People's Republic of China
| | - Yan Leng
- Department of Anesthesiology, Renmin Hospital of Wuhan University, 99 Zhang Zhidong Road, Wuhan, Hubei, 430060, People's Republic of China
| | - Wen-Yuan Li
- Department of Anesthesiology, Renmin Hospital of Wuhan University, 99 Zhang Zhidong Road, Wuhan, Hubei, 430060, People's Republic of China
| | - Zhong-Yuan Xia
- Department of Anesthesiology, Renmin Hospital of Wuhan University, 99 Zhang Zhidong Road, Wuhan, Hubei, 430060, People's Republic of China.
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Han D, Wang L, Jiang S, Yang Q. The ubiquitin-proteasome system in breast cancer. Trends Mol Med 2023:S1471-4914(23)00096-5. [PMID: 37328395 DOI: 10.1016/j.molmed.2023.05.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/12/2023] [Accepted: 05/17/2023] [Indexed: 06/18/2023]
Abstract
Ubiquitin-proteasome system (UPS) is a selective proteolytic system that is associated with the expression or function of target proteins and participates in various physiological and pathological processes of breast cancer. Inhibitors targeting the 26S proteasome in combination with other drugs have shown promising therapeutic effects in the clinical treatment of breast cancer. Moreover, several inhibitors/stimulators targeting other UPS components are also effective in preclinical studies, but have not yet been applied in the clinical treatment of breast cancer. Therefore, it is vital to comprehensively understand the functions of ubiquitination in breast cancer and to identify potential tumor promoters or tumor suppressors among UPS family members, with the aim of developing more effective and specific inhibitors/stimulators targeting specific components of this system.
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Affiliation(s)
- Dianwen Han
- Department of Breast Surgery, General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
| | - Lijuan Wang
- Pathology Tissue Bank, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
| | - Shan Jiang
- Department of Breast Surgery, General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
| | - Qifeng Yang
- Department of Breast Surgery, General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China; Pathology Tissue Bank, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China; Research Institute of Breast Cancer, Shandong University, Jinan, Shandong 250012, China.
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Eom YS, Ko BS, Shah FH, Kim SJ. E3 Ubiquitin Ligase Constitutive Photomorphogenic 1 Regulates Differentiation and Inflammation via MAPK Signaling Pathway in Rabbit Articular Chondrocytes. DNA Cell Biol 2023; 42:239-247. [PMID: 36940307 DOI: 10.1089/dna.2022.0664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023] Open
Abstract
Constitutive photomorphogenic 1 (COP1), is an E3 ubiquitin ligase that plays a role in the regulation of various cellular processes including cell growth, differentiation, and survival in mammals. In certain conditions such as overexpression or loss of function, COP1 acts either as an oncogenic protein or as a tumor suppressor by targeting specific proteins for ubiquitination-mediated degradation. However, the precise role of COP1 has not been well studied in primary articular chondrocytes. In this study, we investigated the role of COP1 in chondrocyte differentiation. Western blotting and reverse transcription-polymerase chain reaction analysis demonstrated that COP1 overexpression reduced type II collagen expression, promoted cyclooxygenase 2 (COX-2) expression, and reduced sulfated proteoglycan synthesis, as detected by Alcian blue staining. Upon siRNA treatment, revived type II collagen, sulfated proteoglycan production, and decreased COX-2 expression. Phosphorylation of p38 kinase and ERK-1/-2 signaling pathways was regulated by COP1 upon cDNA and siRNA transfection in chondrocytes. The inhibition of the p38 kinase and ERK-1/-2 signaling pathways with SB203580 and PD98059 ameliorated the expression of type II collagen and COX-2 in transfected chondrocytes, thus suggesting that COP1 regulates differentiation and inflammation in rabbit articular chondrocytes via the p38 kinase and ERK-1/-2 signaling pathway.
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Affiliation(s)
- Young Seok Eom
- Department of Biological Sciences, College of Natural Sciences, Kongju National University, Gongju, Republic of Korea
| | - Byung Su Ko
- Department of Biological Sciences, College of Natural Sciences, Kongju National University, Gongju, Republic of Korea
| | - Fahad Hassan Shah
- Department of Biological Sciences, College of Natural Sciences, Kongju National University, Gongju, Republic of Korea
| | - Song Ja Kim
- Department of Biological Sciences, College of Natural Sciences, Kongju National University, Gongju, Republic of Korea
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Yang X, Zheng W, Li M, Zhang S. Somatic Super-Enhancer Epigenetic Signature for Overall Survival Prediction in Patients with Breast Invasive Carcinoma. Bioinform Biol Insights 2023; 17:11779322231162767. [PMID: 37020500 PMCID: PMC10068971 DOI: 10.1177/11779322231162767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 02/18/2023] [Indexed: 04/03/2023] Open
Abstract
To analyze genome-wide super-enhancers (SEs) methylation signature of breast invasive carcinoma (BRCA) and its clinical value. Differential methylation sites (DMS) between BRCA and adjacent tissues from The Cancer Genome Atlas (TCGA) database were identified by using ChAMP package in R software. Super-enhancers were identified sing ROSE software. Overlap analysis was used to assess the potential DMS in SEs region. Feature selection was performed by Cox regression and least absolute shrinkage and selection operator (LASSO) algorithm based on TCGA training cohort. Prognosis model validation was performed in TCGA training cohort, TCGA validation cohort, and gene expression omnibus (GEO) test cohort. The gene ontology and KEGG analysis revealed that SEs target genes were significantly enriched in cell-migration-associated processes and pathways. A total of 83 654 DMS were identified between BRCA and adjacent tissues. Around 2397 DMS in SEs region were identified by overlap study and used to feature selection. By using Cox regression and LASSO algorithm, 42 features were selected to develop a clinical prediction model (CPM). Both training (TCGA) and validation cohorts (TCGA and GEO) show that the CPM has ideal discrimination and calibration. The CPM based on DMS at SE regions has ideal discrimination and calibration, which combined with tumor node metastasis (TNM) stage could improve prognostication, and thus contribute to individualized medicine.
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Affiliation(s)
- Xu Yang
- Department of Urology, Fujian Medical
University Union Hospital, Fuzhou, P.R. China
| | - Wenzhong Zheng
- Department of Urology, Fujian Medical
University Union Hospital, Fuzhou, P.R. China
| | - Mengqiang Li
- Department of Urology, Fujian Medical
University Union Hospital, Fuzhou, P.R. China
| | - Shiqiang Zhang
- Department of Urology, Kidney and
Urology Center, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen,
P.R. China
- Shiqiang Zhang, Department of Urology,
Kidney and Urology Center, The Seventh Affiliated Hospital, Sun Yat-Sen
University, No.628, Zhenyuan Rd, Guangming (New) Dist., Shenzhen 518107, P.R.
China.
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COP1 Acts as a Ubiquitin Ligase for PCDH9 Ubiquitination and Degradation in Human Glioma. Mol Neurobiol 2022; 59:2378-2388. [PMID: 35084653 DOI: 10.1007/s12035-021-02634-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 11/02/2021] [Indexed: 10/19/2022]
Abstract
Constitutive photomorphogenic 1 (COP1, also known as RFWD2), a ring-finger-type E3 ubiquitin ligase, has been reported to play a pivotal role in the regulation of cell growth, apoptosis, and DNA repair. Accumulating evidence has suggested that COP1 plays a role in tumorigenesis by triggering the ubiquitination and degradation of its substrates, but the potential mechanism remains unclear. In this study, COP1 was used as a bait in a yeast two-hybrid experiment to screen COP1-interacting proteins in a human brain cDNA library, and the results indicated that protocadherin 9 (PCDH9) was a potential binding protein of COP1. The interaction between and colocalization of COP1 and PCDH9 was further confirmed by coimmunoprecipitation (co-IP) assay and immunofluorescent staining. Subsequently, we demonstrated that COP1 acted as an E3 ligase to promote the ubiquitination and degradation of PCDH9 through the proteasome pathway in glioma cells. Furthermore, we identified that the type of COP1 mediated PCDH9 ubiquitination was Lys48-linked polyubiquitination. Finally, we found that the COP1 protein level was inversely correlated with the PCDH9 protein level in human glioma tissues. Taken together, our results suggest that COP1 is an E3 ubiquitin ligase for PCDH9 and reveal an important mechanism for PCDH9 regulation in human glioma.
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[Effects of ring finger and tryptophan-aspartic acid 2 on dendritic spines and synapse formation in cerebral cortex neurons of mice]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2022; 42:78-85. [PMID: 35249873 PMCID: PMC8901395 DOI: 10.12122/j.issn.1673-4254.2022.01.09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
OBJECTIVE To clarify the functional effects of differential expression of ring finger and tryptophan-aspartic acid 2 (RFWD2) on dendritic development and formation of dendritic spines in cerebral cortex neurons of mice. METHODS Immunofluorescent staining was used to identify the location and global expression profile of RFWD2 in mouse brain and determine the co-localization of RFWD2 with the synaptic proteins in the cortical neurons. We also examined the effects of RFWD2 over-expression (RFWD2-Myc) and RFWD2 knockdown (RFWD2-shRNA) on dendritic development, dendritic spine formation and synaptic function in cultured cortical neurons. RESULTS RFWD2 is highly expressed in the cerebral cortex and hippocampus of mice, and its expression level was positively correlated with the development of cerebral cortex neurons and dendrites. RFWD2 expression was detected on the presynaptic membrane and postsynaptic membrane of the neurons, and its expression levels were positively correlated with the length, number of branches and complexity of the dendrites. In cultured cortical neurons, RFWD2 overexpression significantly lowered the expressions of the synaptic proteins synaptophysin (P < 0.01) and postsynapic density protein 95 (P < 0.01), while RFWD2 knockdown significantly increased their expressions (both P < 0.05). Compared with the control and RFWD2-overexpressing cells, the neurons with RFWD2 knockdown showed significantly reduced number of dendritic spines (both P < 0.05). CONCLUSION RFWD2 can regulate the expression of the synaptic proteins, the development of the dendrites, the formation of the dendritic spines and synaptic function in mouse cerebral cortex neurons through ubiquitination of Pea3 family members and c-Jun, which may serve as potential treatment targets for neurological diseases.
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Sun J, Wang R, Chao T, Wang C. Long Noncoding RNAs Involved in Cardiomyocyte Apoptosis Triggered by Different Stressors. J Cardiovasc Transl Res 2021; 15:588-603. [PMID: 34855148 DOI: 10.1007/s12265-021-10186-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 11/04/2021] [Indexed: 12/26/2022]
Abstract
Cardiomyocytes are essential to maintain the normal cardiac function. Ischemia, hypoxia, and drug stimulation can induce pathological apoptosis of cardiomyocytes which eventually leads to heart failure, arrhythmia, and other cardiovascular diseases. Understanding the molecular mechanisms that regulate cardiomyocyte apoptosis is of great significance for the prevention and treatment of cardiovascular diseases. In recent years, more and more evidences reveal that long noncoding RNAs (lncRNAs) play important regulatory roles in myocardial cell apoptosis. They can modulate the expression of apoptosis-related genes at post-transcriptional level by altering the translation efficacy of target mRNAs or functioning as a precursor for miRNAs or competing for miRNA-mediated inhibition. Moreover, reversing the abnormal expression of lncRNAs can attenuate and even reverse the pathological apoptosis of cardiomyocytes. Therefore, apoptosis-related lncRNAs may become a potential new field for studying cardiomyocyte apoptosis and provide new ideas for the treatment of cardiovascular diseases.
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Affiliation(s)
- Jinghui Sun
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Ru Wang
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Tiantian Chao
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Chenglong Wang
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China.
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12
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Guo M, Ding P, Zhu Z, Fan L, Zhou Y, Yang S, Yang Y, Gu C. Targeting RFWD2 as an Effective Strategy to Inhibit Cellular Proliferation and Overcome Drug Resistance to Proteasome Inhibitor in Multiple Myeloma. Front Cell Dev Biol 2021; 9:675939. [PMID: 33968945 PMCID: PMC8097052 DOI: 10.3389/fcell.2021.675939] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 03/30/2021] [Indexed: 12/15/2022] Open
Abstract
The potential to overcome resistance to proteasome inhibitors is greatly related with ubiquitin-proteasome system during multiple myeloma (MM) treatment process. The constitutive photomorphogenic 1 (RFWD2), referred to an E3 ubiquitin ligase, has been identified as an oncogene in multiple cancers, yet important questions on the role of RFWD2 in MM biology and treatment remain unclear. Here we demonstrated that MM patients with elevated RFWD2 expression achieved adverse outcome and drug resistance by analyzing gene expression profiling. Moreover, we proved that RFWD2 participated in the process of cell cycle, cell growth and death in MM by mass spectrometry analysis. In vitro study indicated that inducible knockdown of RFWD2 hindered cellular growth and triggered apoptosis in MM cells. Mechanism study revealed that RFWD2 controlled MM cellular proliferation via regulating the degradation of P27 rather than P53. Further exploration unveiled that RFWD2 meditated P27 ubiquitination via interacting with RCHY1, which served as an E3 ubiquitin ligase of P27. Finally, in vivo study illustrated that blocking RFWD2 in BTZ-resistant MM cells overcame the drug resistance in a myeloma xenograft mouse model. Taken together, these findings provide compelling evidence for prompting that targeting RFWD2 may be an effective strategy to inhibit cellular proliferation and overcome drug resistance to proteasome inhibitor in MM.
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Affiliation(s)
- Mengjie Guo
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China.,Large Data Center, Nanjing Hospital of Chinese Medicine affiliated to Nanjing University of Chinese Medicine, Nanjing, China
| | - Pinggang Ding
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Zhen Zhu
- College of Health and Rehabilitation & College of Acupuncture and Massage, Nanjing University of Chinese Medicine, Nanjing, China
| | - Lu Fan
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yanyan Zhou
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Shu Yang
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Ye Yang
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Chunyan Gu
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China.,Large Data Center, Nanjing Hospital of Chinese Medicine affiliated to Nanjing University of Chinese Medicine, Nanjing, China
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13
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Xu Z, Wu W, Yan H, Hu Y, He Q, Luo P. Regulation of p53 stability as a therapeutic strategy for cancer. Biochem Pharmacol 2021; 185:114407. [PMID: 33421376 DOI: 10.1016/j.bcp.2021.114407] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 12/21/2020] [Accepted: 01/04/2021] [Indexed: 12/17/2022]
Abstract
The tumor suppressor protein p53 participates in the control of key biological functions such as cell death, metabolic homeostasis and immune function, which are closely related to various diseases such as tumors, metabolic disorders, infection and neurodegeneration. The p53 gene is also mutated in approximately 50% of human cancer cells. Mutant p53 proteins escape from the ubiquitination-dependent degradation, gain oncogenic function and promote the carcinogenesis, malignant progression, metastasis and chemoresistance. Therefore, the stability of both wild type and mutant p53 needs to be precisely regulated to maintain normal functions and targeting the p53 stability is one of the therapeutic strategies against cancer. Here, we focus on compound-induced degradation of p53 by both the ubiquitination-dependent proteasome and autophagy-lysosome degradation pathways. We also review other posttranslational modifications which control the stability of p53 and the biological functions involved in these processes. This review provides the current theoretical basis for the regulation of p53 abundance and its possible applications in different diseases.
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Affiliation(s)
- Zhifei Xu
- Center for Drug Safety Evaluation and Research of Zhejiang University, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.
| | - Wentong Wu
- Center for Drug Safety Evaluation and Research of Zhejiang University, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Hao Yan
- Center for Drug Safety Evaluation and Research of Zhejiang University, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yuhuai Hu
- Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University, Hangzhou 310018, China
| | - Qiaojun He
- Center for Drug Safety Evaluation and Research of Zhejiang University, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China; Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University, Hangzhou 310018, China
| | - Peihua Luo
- Center for Drug Safety Evaluation and Research of Zhejiang University, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.
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14
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Huang F, Shu Q, Qin Z, Tian J, Su Z, Huang Y, Gao M. Anticancer Actions of Azurin and Its Derived Peptide p28. Protein J 2020; 39:182-189. [PMID: 32180097 DOI: 10.1007/s10930-020-09891-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Cancers are a great threat to humans. In cancer therapy, surgical removal of the tumor combined with radiotherapy and chemotherapy is the most routine treatment procedure and usually the most effective. However, radiotherapy and chemotherapy drugs that kill cancer cells efficiently also kill normal cells, thus exhibiting large side effects. Cancer-targeted drugs, which aim to specifically recognize proteins or signaling pathways associated with tumor proliferation and migration, have achieved marked progress in recent years. Azurin is a copper-containing redox protein secreted by Pseudomonas aeruginosa. Azurin and its derived peptide p28 preferentially enter a variety of cancer cells and induce apoptosis or cell cycle arrest. Mechanistic studies revealed that azurin and p28 target the p53 and receptor tyrosine kinase signaling pathways as well as other pathways. Two phase I trials of p28 have been carried out, with findings that p28 is safe and exhibits anticancer activity in both adult and pediatric patients. In this review paper, we provide an up-to-date summary of progress on the anticancer mechanisms and therapeutic strategies for azurin and p28.
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Affiliation(s)
- Fan Huang
- Key Laboratory of Industrial Fermentation (Ministry of Education), Hubei University of Technology, Wuhan, 430068, Hubei, China.,Hubei Key Laboratory of Industrial Microbiology, Hubei University of Technology, Wuhan, China
| | - Qianhui Shu
- Key Laboratory of Industrial Fermentation (Ministry of Education), Hubei University of Technology, Wuhan, 430068, Hubei, China.,Hubei Key Laboratory of Industrial Microbiology, Hubei University of Technology, Wuhan, China
| | - Zhaojie Qin
- Key Laboratory of Industrial Fermentation (Ministry of Education), Hubei University of Technology, Wuhan, 430068, Hubei, China.,Hubei Key Laboratory of Industrial Microbiology, Hubei University of Technology, Wuhan, China
| | - Jianglin Tian
- Key Laboratory of Industrial Fermentation (Ministry of Education), Hubei University of Technology, Wuhan, 430068, Hubei, China.,Hubei Key Laboratory of Industrial Microbiology, Hubei University of Technology, Wuhan, China
| | - Zhengding Su
- Key Laboratory of Industrial Fermentation (Ministry of Education), Hubei University of Technology, Wuhan, 430068, Hubei, China.,Hubei Key Laboratory of Industrial Microbiology, Hubei University of Technology, Wuhan, China
| | - Yongqi Huang
- Key Laboratory of Industrial Fermentation (Ministry of Education), Hubei University of Technology, Wuhan, 430068, Hubei, China.,Hubei Key Laboratory of Industrial Microbiology, Hubei University of Technology, Wuhan, China
| | - Meng Gao
- Key Laboratory of Industrial Fermentation (Ministry of Education), Hubei University of Technology, Wuhan, 430068, Hubei, China. .,Hubei Key Laboratory of Industrial Microbiology, Hubei University of Technology, Wuhan, China.
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15
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Sun J, Wang X, Liu W, Ji P, Shang A, Wu J, Zhou H, Quan W, Yao Y, Yang Y, Gu C, Sun Z, Goel A, Weng W, Li D. Novel evidence for retinoic acid-induced G (Rig-G) as a tumor suppressor by activating p53 signaling pathway in lung cancer. FASEB J 2020; 34:11900-11912. [PMID: 32741018 PMCID: PMC7725982 DOI: 10.1096/fj.201903220r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 05/20/2020] [Accepted: 06/23/2020] [Indexed: 12/11/2022]
Abstract
Lung cancer is one of most common malignancies worldwide. We have previously identified retinoic acid-induced gene G (Rig-G) as a tumor suppressor in not only acute promyelocytic leukemia, but also in other solid tumors. However, the clinical significance of Rig-G and the underlying mechanism(s) for its biological function in lung cancer remain largely unexplored. Herein, we first compared the expression of Rig-G between lung cancer (n = 138) and normal tissues (n = 23), from public-available data sets and our patient cohort. We further analyzed the correlation of Rig-G expression with key clinico-pathological features and survival outcomes in a multi-site clinical cohort of 300 lung cancer patients. Functional studies for Rig-G were performed in cell lines, and an animal model to support clinical findings. We found that Rig-G was frequently downregulated in lung cancer tissues and cell lines, and correlated with poor prognosis in lung cancer patients. Overexpression of Rig-G led to significantly reduced cell growth and suppressed migration in A549 and NCI-H1944 cells, accompanied by reduced epithelial-mesenchymal transition. Likewise, restoration of Rig-G in Lewis lung carcinoma cells permitted development of fewer cancer metastases versus controls in an animal model. Gene expression profiling results identified p53 pathway as a key downstream target of Rig-G, and p53 inhibition by pifithrin-α caused abrogation of tumor-suppressive effects of Rig-G in lung cancer. In conclusion, we, for the first time, have identified Rig-G as a novel and important tumor suppressor, which may serve as a potential therapeutic target for restoring p53 expression in lung cancer patients.
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Affiliation(s)
- Junjun Sun
- Department of Clinical Laboratory, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - Xuan Wang
- Department of Pharmacy, Putuo People’s Hospital, Shanghai 200060, China
| | - Wenfang Liu
- Department of General Surgery, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - Ping Ji
- Department of Clinical Laboratory, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - Anquan Shang
- Department of Clinical Laboratory, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - Junlu Wu
- Department of Clinical Laboratory, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - Hao Zhou
- Department of General Surgery, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - Wenqiang Quan
- Department of Clinical Laboratory, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - Yiwen Yao
- Department of Clinical Laboratory, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - Yibao Yang
- Department of Clinical Laboratory, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - ChenZheng Gu
- Department of Clinical Laboratory, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - Zujun Sun
- Department of Clinical Laboratory, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - Ajay Goel
- Department of Molecular Diagnostics and Experimental Therapeutics, Beckman Research Institute of City of Hope Comprehensive Cancer Center, Duarte, CA, USA
| | - Wenhao Weng
- Department of Clinical Laboratory, Yangpu Hospital, Tongji University School of Medicine, Shanghai, 200090, China
- Institute of Gastrointestinal Surgery and Translational Medicine, Yangpu Hospital, Tongji University School of Medicine, Shanghai, 200090, China
| | - Dong Li
- Department of Clinical Laboratory, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
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16
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Li X, Liu L, Goodall GJ, Schreiber A, Xu T, Li J, Le TD. A novel single-cell based method for breast cancer prognosis. PLoS Comput Biol 2020; 16:e1008133. [PMID: 32833968 PMCID: PMC7470419 DOI: 10.1371/journal.pcbi.1008133] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 09/03/2020] [Accepted: 07/09/2020] [Indexed: 12/12/2022] Open
Abstract
Breast cancer prognosis is challenging due to the heterogeneity of the disease. Various computational methods using bulk RNA-seq data have been proposed for breast cancer prognosis. However, these methods suffer from limited performances or ambiguous biological relevance, as a result of the neglect of intra-tumor heterogeneity. Recently, single cell RNA-sequencing (scRNA-seq) has emerged for studying tumor heterogeneity at cellular levels. In this paper, we propose a novel method, scPrognosis, to improve breast cancer prognosis with scRNA-seq data. scPrognosis uses the scRNA-seq data of the biological process Epithelial-to-Mesenchymal Transition (EMT). It firstly infers the EMT pseudotime and a dynamic gene co-expression network, then uses an integrative model to select genes important in EMT based on their expression variation and differentiation in different stages of EMT, and their roles in the dynamic gene co-expression network. To validate and apply the selected signatures to breast cancer prognosis, we use them as the features to build a prediction model with bulk RNA-seq data. The experimental results show that scPrognosis outperforms other benchmark breast cancer prognosis methods that use bulk RNA-seq data. Moreover, the dynamic changes in the expression of the selected signature genes in EMT may provide clues to the link between EMT and clinical outcomes of breast cancer. scPrognosis will also be useful when applied to scRNA-seq datasets of different biological processes other than EMT.
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Affiliation(s)
- Xiaomei Li
- UniSA STEM, University of South Australia, Mawson Lakes, SA, Australia
| | - Lin Liu
- UniSA STEM, University of South Australia, Mawson Lakes, SA, Australia
| | - Gregory J. Goodall
- Centre for Cancer Biology, an alliance of SA Pathology and University of South Australia, Adelaide, SA, Australia
- School of Medicine, Discipline of Medicine, University of Adelaide, SA, Australia
| | - Andreas Schreiber
- Centre for Cancer Biology, an alliance of SA Pathology and University of South Australia, Adelaide, SA, Australia
| | - Taosheng Xu
- Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
| | - Jiuyong Li
- UniSA STEM, University of South Australia, Mawson Lakes, SA, Australia
| | - Thuc D. Le
- UniSA STEM, University of South Australia, Mawson Lakes, SA, Australia
- * E-mail:
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17
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Guan WY, Zhao S, Luo YN. Analysis of the expression and association of retinoblastoma binding protein 6 with the JNK signaling pathway in prostate cancers. Cell Biol Int 2020; 44:2107-2119. [PMID: 32662898 DOI: 10.1002/cbin.11419] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 06/30/2020] [Accepted: 07/12/2020] [Indexed: 12/21/2022]
Abstract
This study aims to investigate the expression of retinoblastoma binding protein 6 (RBBP6) in prostate cancer (PCa) and its association with the c-Jun N-terminal kinase (JNK) pathway. Immunohistochemistry was used to detect RBBP6 and JNK1/2 expression in PCa and benign prostatic hyperplasia tissues. RBBP6 expression in PCa cells (LNCap, PC3, and DU145) and noncancerous prostate epithelial cells (RWPE-1) was determined by quantitative real-time polymerase chain reaction and western blot analysis. PC3 and DU145 cells were transfected with RBBP6 small interfering RNAs (siRNAs) to examine the biological characteristics. Anisomycin (a JNK activator) with/without RBBP6 siRNA was used to treat PC3 cells for further investigating the ramification of the RBBP6-mediated JNK pathway in PCa. PCa tissues and cells showed higher RBBP6 and JNK1/2 expression. RBBP6 was positively correlated with JNK1/2 in PCa tissues. Besides, RBBP6 expression was correlated to clinical tumor stage, lymph node metastasis, Gleason grade, preoperative prostate-specific antigen level, as well as prognosis of PCa. RBBP6 siRNA reduced cell proliferation, arrested cells at G2/M, and promoted cell apoptosis, and suppressed JNK pathway. In addition, migration and invasion decreased after the RBBP6 siRNA transfection with downregulated matrix metallopeptidase-2 (MMP-2) and MMP-9. Anisomycin promoted the proliferation, invasion, and migration of PC3 cells and inhibited PC3 cell apoptosis, which could be reversed by RBBP6 siRNA. RBBP6 expression was upregulated in PCa tissues and positively correlated with expression level of JNK1/2. With inhibition of RBBP6 expression, the proliferation, invasion, and migration of PCa cells decreased dramatically, while PC3 cell apoptosis increased appreciably, accompanied by the suppression of the JNK pathway.
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Affiliation(s)
- Wen-Ying Guan
- Myopia Laser Treatment Center, Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - Sheng Zhao
- Department of Image Diagnostics, Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - Yun-Na Luo
- Department of Physical Examination Center, Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
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18
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Wang M, Dai W, Ke Z, Li Y. Functional roles of E3 ubiquitin ligases in gastric cancer. Oncol Lett 2020; 20:22. [PMID: 32774495 PMCID: PMC7405480 DOI: 10.3892/ol.2020.11883] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 04/29/2020] [Indexed: 12/15/2022] Open
Abstract
To date, >650 E3 ubiquitin ligases have been described in humans, including >600 really interesting new genes (RINGs), 28 homologous to E6-associated protein C-terminus (HECTs) and several RING-in-between-RINGs. They are considered key regulators and therapeutic targets of many types of human cancers, including gastric cancer (GC). Among them, some RING and HECT E3 ligases are closely related to the proliferation, infiltration and prognosis of GC. During the past few years, abnormal expressions and functions of many E3 ligases have been identified in GC. However, the functional roles of E3 ligases in GC have not been fully elucidated. The present article focuses on the functional roles of E3 ligases related to the proteasome in GC. In this comprehensive review, the latest research progress on E3 ligases involved in GC and elaborate their structure, classification, functional roles and therapeutic value in GC was summarized. Finally, 30 E3 ligases that serve essential roles in regulating the development of GC were described. Some of these ligases may serve as oncogenes or tumor suppressors in GC, whereas the pathological mechanism of others needs further study; for example, constitutive photomorphogenic 1. In conclusion, the present review demonstrated that E3 ligases are crucial tumor regulatory factors and potential therapeutic targets in GC. Therefore, more studies should focus on the therapeutic targeting of E3 ligases in GC.
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Affiliation(s)
- Mingliang Wang
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Wei Dai
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Zhangyan Ke
- Department of Geriatric Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Yongxiang Li
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, P.R. China
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19
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Li X, Ni L, Wang W, Zong L, Yao B. LncRNA Fendrr inhibits hypoxia/reoxygenation-induced cardiomyocyte apoptosis by downregulating p53 expression. J Pharm Pharmacol 2020; 72:1211-1220. [PMID: 32537758 DOI: 10.1111/jphp.13298] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 05/08/2020] [Indexed: 12/17/2022]
Abstract
OBJECTIVE LncRNA Fendrr plays an important role in cardiac development, but its role in myocardial ischaemia-reperfusion (I/R) injury remains unclear. P53 has been shown to be an important regulator of apoptosis and is involved in myocardial I/R-induced apoptosis. This study aims at investigating whether Fendrr affects hypoxia/reoxygenation (H/R)-induced cardiomyocyte apoptosis through p53. METHODS The left anterior descending coronary artery of the rat was ligated for 30 min and then reperfusion for 120 min by releasing the suture. Neonatal rat ventricular myocytes (NRVM) and rat cardiac cell line H9c2 were cultured for 6 h in hypoxia (95% N2 and 5% CO2 ), followed by reoxygenation (95% air and 5% CO2 ) for 6 h. Transfection were performed in cells. Apoptosis was detected by flow cytometry. Moreover, RNA pull-down, RNA immunoprecipitation, ubiquitination assay, GST pull-down assay and co-immunoprecipitation were used to detect the regulation of Fendrr on p53 protein. KEY FINDINGS Fendrr was decreased in I/R-induced myocardium and H/R-induced cardiomyocyte, and overexpression of Fendrr inhibited H/R-induced NRVM or H9c2 cells apoptosis. Further research found that the 1381-2100 nt of Fendrr bound to p53 protein and Fendrr promoted t direct binding of p53 to Cop1. The inhibition of Fendrr reduced the binding of E3 ubiquitin-protein ligase constitutive photomorphogenesis protein 1 (COP1) to p53 and reduced the ubiquitination of p53. Furthermore, the inhibition of Fendrr on H/R-induced NRVM or H9c2 cells apoptosis could be reversed by overexpression of p53. CONCLUSIONS Fendrr can inhibit H/R-induced cardiomyocyte apoptosis, which is partly through promoting the ubiquitination and degradation of p53 by increasing the binding of Cop1 and p53.
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Affiliation(s)
- Xiang Li
- Department of Cardiovascular, Affiliated Hospital of Jining Medical University, Jining, China
| | - Liangchun Ni
- Department of Cardiovascular, Affiliated Hospital of Jining Medical University, Jining, China
| | - Weixin Wang
- Department of Cardiovascular, Affiliated Hospital of Jining Medical University, Jining, China
| | - Liang Zong
- Department of Cardiovascular, Affiliated Hospital of Jining Medical University, Jining, China
| | - Bi Yao
- Department of Cardiovascular, Affiliated Hospital of Jining Medical University, Jining, China
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20
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Chen L, Liu S, Tao Y. Regulating tumor suppressor genes: post-translational modifications. Signal Transduct Target Ther 2020; 5:90. [PMID: 32532965 PMCID: PMC7293209 DOI: 10.1038/s41392-020-0196-9] [Citation(s) in RCA: 195] [Impact Index Per Article: 48.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 05/19/2020] [Accepted: 05/24/2020] [Indexed: 01/10/2023] Open
Abstract
Tumor suppressor genes cooperate with each other in tumors. Three important tumor suppressor proteins, retinoblastoma (Rb), p53, phosphatase, and tensin homolog deleted on chromosome ten (PTEN) are functionally associated and they regulated by post-translational modification (PTMs) as well. PTMs include phosphorylation, SUMOylation, acetylation, and other novel modifications becoming growing appreciated. Because most of PTMs are reversible, normal cells use them as a switch to control the state of cells being the resting or proliferating, and PTMs also involve in cell survival and cell cycle, which may lead to abnormal proliferation and tumorigenesis. Although a lot of studies focus on the importance of each kind of PTM, further discoveries shows that tumor suppressor genes (TSGs) form a complex "network" by the interaction of modification. Recently, there are several promising strategies for TSGs for they change more frequently than carcinogenic genes in cancers. We here review the necessity, characteristics, and mechanisms of each kind of post-translational modification on Rb, p53, PTEN, and its influence on the precise and selective function. We also discuss the current antitumoral therapies of Rb, p53 and PTEN as predictive, prognostic, and therapeutic target in cancer.
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Affiliation(s)
- Ling Chen
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Department of Pathology, Xiangya Hospital, School of Basic Medicine, Central South University, 410078, Changsha, Hunan, China
- NHC Key Laboratory of Carcinogenesis (Central South University), Cancer Research Institute, Central South University, 410078, Changsha, Hunan, China
| | - Shuang Liu
- Department of Oncology, Institute of Medical Sciences, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, 410008, Changsha, Hunan, China
| | - Yongguang Tao
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Department of Pathology, Xiangya Hospital, School of Basic Medicine, Central South University, 410078, Changsha, Hunan, China.
- NHC Key Laboratory of Carcinogenesis (Central South University), Cancer Research Institute, Central South University, 410078, Changsha, Hunan, China.
- Hunan Key Laboratory of Early Diagnosis and Precision Therapy, Department of Thoracic Surgery, Second Xiangya Hospital, Central South University, 410011, Changsha, China.
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21
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Song Y, Liu Y, Pan S, Xie S, Wang ZW, Zhu X. Role of the COP1 protein in cancer development and therapy. Semin Cancer Biol 2020; 67:43-52. [PMID: 32027978 DOI: 10.1016/j.semcancer.2020.02.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 01/29/2020] [Accepted: 02/01/2020] [Indexed: 12/31/2022]
Abstract
COP1, an E3 ubiquitin ligase, has been demonstrated to play a vital role in the regulation of cell proliferation, apoptosis and DNA repair. Accumulated evidence has revealed that COP1 is involved in carcinogenesis via targeting its substrates, including p53, c-Jun, ETS, β-catenin, STAT3, MTA1, p27, 14-3-3σ, and C/EBPα, for ubiquitination and degradation. COP1 can play tumor suppressive and oncogenic roles in human malignancies, urging us to summarize the functions of COP1 in tumorigenesis. In this review, we describe the structure of COP1 and its known substrates. Moreover, we dissect the function of COP1 by physiological (mouse models), pathological (human tumor specimens) and biochemical (ubiquitin substrates) Evidence. Furthermore, we discuss COP1 as a potential therapeutic target for cancer therapy.
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Affiliation(s)
- Yizuo Song
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China
| | - Yi Liu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China
| | - Shuya Pan
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China
| | - Shangdan Xie
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China
| | - Zhi-Wei Wang
- Center of Scientific Research, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China; Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
| | - Xueqiong Zhu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China.
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22
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Ko EJ, Oh YL, Kim HY, Eo WK, Kim H, Kim KH, Koh SB, Ock MS, Choi YH, Kim A, Choi HH, Park EJ, Cha HJ. Correlation of constitutive photomorphogenic 1 (COP1) and p27 tumor suppressor protein expression in ovarian cancer. Genes Genomics 2019; 41:879-884. [PMID: 31028655 DOI: 10.1007/s13258-019-00818-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 04/02/2019] [Indexed: 01/18/2023]
Abstract
BACKGROUND Constitutive photomorphogenic 1 (COP1) is an E3 ubiquitin ligase that regulates important target proteins for cell growth including p27. The tumor suppressor p27 negatively regulates the cell cycle by inhibiting cyclin-dependent kinase. COP1 negatively regulates p27 stability by mediating its nuclear export and degradation. OBJECTIVE Even if COP1 and p27 are tightly related and have significant roles in tumor progression, the expression patterns and relationship of both proteins in cancer have not yet been studied. METHOD We analyzed the expression patterns and relationship between COP1 and p27 using an ovarian cancer tissue microarray by dual immunofluorescence analysis. RESULTS The expression levels of COP1 and p27 proteins were not significantly different between ovarian cancer tissue and normal control tissue. Other clinical data including age, tumor type, tumor grade, and stage were not significantly related to expression of the two proteins. The co-relationship between COP1 and p27 proteins was significantly high (Pearson correlation coefficient 0.79, p = 8.65 × 10-22). CONCLUSIONS Our results demonstrate that while the expression levels of COP1 and p27 are highly correlated, they are not significantly related to cancer progression in ovarian cancer.
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Affiliation(s)
- Eun-Ji Ko
- Department of Parasitology and Genetics, Kosin University College of Medicine, Busan, Republic of Korea.,Department of Biological Sciences, College of Natural Sciences, Pusan National University, Busan, Republic of Korea
| | - Young Lim Oh
- Department of Obstetrics and Gynecology, Kosin University College of Medicine, Busan, Republic of Korea
| | - Heung Yeol Kim
- Department of Obstetrics and Gynecology, Kosin University College of Medicine, Busan, Republic of Korea
| | - Wan Kyu Eo
- Department of Internal Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Hongbae Kim
- Department of Obstetrics and Gynecology, Hallym University College of Medicine, Chuncheon, Republic of Korea
| | - Ki Hyung Kim
- Department of Obstetrics and Gynecology, Pusan National University School of Medicine, Busan, Republic of Korea.,Biomedical Research Institute and Pusan Cancer Center, Pusan National University Hospital, Busan, Republic of Korea
| | - Suk Bong Koh
- Department of Obstetrics and Gynecology, School of Medicine, Catholic University of Daegu, Daegu, Republic of Korea
| | - Mee Sun Ock
- Department of Parasitology and Genetics, Kosin University College of Medicine, Busan, Republic of Korea
| | - Yung Hyun Choi
- Department of Biochemistry, College of Oriental Medicine, Dongeui University, Busan, Republic of Korea
| | - Ari Kim
- Department of Obstetrics and Gynecology, Chicago Medical School, Rosalind Franklin University of Medicine and Science, Vernon Hills, IL, USA
| | - Hyun Ho Choi
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Disease, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Research Institute of Gastroenterology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Eun Joo Park
- Department of Obstetrics and Gynecology, Eulji Medical Center, Eulji University, Seoul, Republic of Korea.
| | - Hee-Jae Cha
- Department of Parasitology and Genetics, Kosin University College of Medicine, Busan, Republic of Korea.
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23
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Yang X, Zhang Q, Yang X, Zhao M, Yang T, Yao A, Tian X. PACT cessation overcomes ovarian cancer cell chemoresistance to cisplatin by enhancing p53-mediated apoptotic pathway. Biochem Biophys Res Commun 2019; 511:719-724. [PMID: 30827507 DOI: 10.1016/j.bbrc.2019.02.089] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 02/16/2019] [Indexed: 12/18/2022]
Abstract
Ovarian cancer ranks as a lethal gynecological malignancy, and development of resistance to chemotherapy agents constitutes a major clinical challenge in ovarian carcinoma management. P53-associated cellular protein-testes derived (PACT) is recently proven to be expressed aberrantly in several cancers, and exerts a critical roles in cell proliferation, apoptosis and migration. Up to now, its function in chemoresistance of ovarian cancer remains poorly defined. In the present study, elevated expression of PACT was detected in cisplatin-resistant A2780/CP cells relative to cisplatin-sensitive A2780 cells. Moreover, exposure to cisplatin also increased PACT expression in A2780 cells. Functional assay confirmed that knockdown of PACT further aggravated the inhibitory effects of cisplatin on A2780 cell viability and enhanced cell apoptosis and caspase-3 activity in cisplatin-treated A2780 cells, indicating that PACT cessation elevates cell sensitivity to cisplatin in A2780 cells. Whilst, deletion of PACT affords little effects on cisplatin resistance in p53-defective SKOV3 cells. Mechanistic analysis corroborated that depression of PACT notably enhanced cisplatin-induced p53 expression, concomitant with the increases in p53-downstream Bax, p21 expression and decrease in Bcl-2 expression. Intriguingly, blocking the p53 pathway notably reversed PACT inhibition-increased cell sensitivity to cisplatin in A2780 cells by elevating cell viability and depressing cell apoptosis. Additionally, abrogation of p53 signaling also blunts PACT suppression-overcomed chemotherapy resistance to cisplatin in A2780/CP cells. Together, these findings confirm that targeting PACT may antagonize ovarian cancer cell resistance to cisplatin, supporting a promising therapeutic strategy to overcome the chemotherapy resistance in the treatment of ovarian cancer.
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Affiliation(s)
- Xuemei Yang
- Department of the Second of Gynecologic Oncology, Shaanxi Provincial Tumor Hospital, The Affiliated Hospital of Medical College of Xi'an JiaoTong University, Xi'an, Shannxi, 710061, PR China
| | - Qian Zhang
- Department of the First of Internal Medicine, Shaanxi Provincial Tumor Hospital, The Affiliated Hospital of Medical College of Xi'an JiaoTong University, Xi'an, Shannxi, 710061, PR China
| | - Xiaofeng Yang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, PR China.
| | - Minyi Zhao
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, PR China
| | - Ting Yang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, PR China
| | - Anmei Yao
- Department of the Second of Gynecologic Oncology, Shaanxi Provincial Tumor Hospital, The Affiliated Hospital of Medical College of Xi'an JiaoTong University, Xi'an, Shannxi, 710061, PR China
| | - Xiaofei Tian
- Department of the Second of Gynecologic Oncology, Shaanxi Provincial Tumor Hospital, The Affiliated Hospital of Medical College of Xi'an JiaoTong University, Xi'an, Shannxi, 710061, PR China
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