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Tang N, Liu X. USP18 promotes colon adenocarcinoma progression via targeting the ERK-MNK signaling pathway. J Gene Med 2024; 26:e3709. [PMID: 38949077 DOI: 10.1002/jgm.3709] [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: 01/18/2024] [Revised: 04/18/2024] [Accepted: 06/02/2024] [Indexed: 07/02/2024] Open
Abstract
BACKGROUND Colorectal cancer is the third most common malignancy worldwide and is one of the leading causes of cancer-related mortality. Ubiquitin-specific peptidase 18 (USP18) protein has been reported to exert different tumor-related effects in distinct tumor types. Here, we initially investigated the expression and signaling pathways of USP18 in colon adenocarcinoma (COAD). METHODS A quantitative real-time PCR was conducted to evaluate the mRNA level of USP18 in cultured cells. Immunohistochemical staining was used to explore the protein expression of USP18 in clinical COAD samples. Specific knockdown was achieved by transient transfection of small interfering RNAs into SW480 and HT29 cells using Lipo3000. Cell conting kit-8 assay, transwell assay and matrigel-transwell assays were conducted to evaluate proliferation, migration and invasion capacities, respectively. Western blotting was performed to analyze downstream signaling pathways. A chi-squared test and univariate and multivariate analyses were used to evaluate the clinical data. Xenografts from mice model were assessed to validate the in vitro findings. RESULTS Higher USP18 level was identified in COAD tissues and was positively correlated with advanced tumor stage. High USP18 protein expression indicated poorer prognosis of COAD patients. Silencing USP18 suppressed COAD cell proliferation and invasion via destabilizing extracellular signal-regulated kinase (ERK) protein and suppressing ERK downstream pathways. Simultaneously silencing interferon-stimulated gene 15 (ISG15) with USP18 can partially rescue the tumor cell viability, indicating its involvement in USP18 signaling. The oncogenic effects of USP18 were also confirmed in mice models. CONCLUSIONS USP18 plays oncogenic effects in colon adenocarcinoma via ISG15-ERK pathways. High USP18 expression indicates poor clinical outcomes for colon adenocarcinoma patients.
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Affiliation(s)
- Nan Tang
- Department of Medical Oncology, Shanghai Medical College, Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China
| | - Xiaojian Liu
- Department of Medical Oncology, Shanghai Medical College, Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China
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Ren J, Yu P, Liu S, Li R, Niu X, Chen Y, Zhang Z, Zhou F, Zhang L. Deubiquitylating Enzymes in Cancer and Immunity. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2303807. [PMID: 37888853 PMCID: PMC10754134 DOI: 10.1002/advs.202303807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 08/30/2023] [Indexed: 10/28/2023]
Abstract
Deubiquitylating enzymes (DUBs) maintain relative homeostasis of the cellular ubiquitome by removing the post-translational modification ubiquitin moiety from substrates. Numerous DUBs have been demonstrated specificity for cleaving a certain type of ubiquitin linkage or positions within ubiquitin chains. Moreover, several DUBs perform functions through specific protein-protein interactions in a catalytically independent manner, which further expands the versatility and complexity of DUBs' functions. Dysregulation of DUBs disrupts the dynamic equilibrium of ubiquitome and causes various diseases, especially cancer and immune disorders. This review summarizes the Janus-faced roles of DUBs in cancer including proteasomal degradation, DNA repair, apoptosis, and tumor metastasis, as well as in immunity involving innate immune receptor signaling and inflammatory and autoimmune disorders. The prospects and challenges for the clinical development of DUB inhibitors are further discussed. The review provides a comprehensive understanding of the multi-faced roles of DUBs in cancer and immunity.
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Affiliation(s)
- Jiang Ren
- The Eighth Affiliated HospitalSun Yat‐sen UniversityShenzhen518033P. R. China
| | - Peng Yu
- Zhongshan Institute for Drug DiscoveryShanghai Institute of Materia MedicaChinese Academy of SciencesZhongshanGuangdongP. R. China
| | - Sijia Liu
- International Biomed‐X Research CenterSecond Affiliated Hospital of Zhejiang University School of MedicineZhejiang UniversityHangzhouP. R. China
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang ProvinceHangzhou310058China
| | - Ran Li
- The Eighth Affiliated HospitalSun Yat‐sen UniversityShenzhen518033P. R. China
| | - Xin Niu
- MOE Laboratory of Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling NetworkLife Sciences InstituteZhejiang UniversityHangzhou310058P. R. China
| | - Yan Chen
- The Eighth Affiliated HospitalSun Yat‐sen UniversityShenzhen518033P. R. China
| | - Zhenyu Zhang
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan450003P. R. China
| | - Fangfang Zhou
- Institutes of Biology and Medical ScienceSoochow UniversitySuzhou215123P. R. China
| | - Long Zhang
- The Eighth Affiliated HospitalSun Yat‐sen UniversityShenzhen518033P. R. China
- International Biomed‐X Research CenterSecond Affiliated Hospital of Zhejiang University School of MedicineZhejiang UniversityHangzhouP. R. China
- MOE Laboratory of Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling NetworkLife Sciences InstituteZhejiang UniversityHangzhou310058P. R. China
- Cancer CenterZhejiang UniversityHangzhouZhejiang310058P. R. China
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Ghufran SM, Sharma P, Roy B, Jaiswal S, Aftab M, Sengupta S, Ghose S, Biswas S. Transcriptome wide functional analysis of HBx expressing human hepatocytes stimulated with endothelial cell cross-talk. Genomics 2023; 115:110642. [PMID: 37209778 PMCID: PMC7615065 DOI: 10.1016/j.ygeno.2023.110642] [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: 01/26/2023] [Revised: 05/11/2023] [Accepted: 05/17/2023] [Indexed: 05/22/2023]
Abstract
Identification of genes dysregulated during the hepatitis B virus (HBV)-host cell interaction adds to the understanding of underlying molecular mechanisms and aids in discovering effective therapies to improve prognosis in hepatitis B virus (HBV)-infected individuals. Through bioinformatics analyses of transcriptomics data, this study aimed to identify potential genes involved in the cross-talk of human hepatocytes expressing the HBV viral protein HBx with endothelial cells. Transient transfection of HBV viral gene X (HBx) was performed in THLE2 cells using pcDNA3 constructs. Through mRNA Sequencing (RNA Seq) analysis, differentially expressed genes (DEGs) were identified. THLE2 cells transfected with HBx (THLE2x) were further treated with conditioned medium from cultured human umbilical vein derived endothelial cells (HUVEC-CM). Gene Ontology (GO) enrichment analysis revealed that interferon and cytokine signaling pathways were primarily enriched for the downregulated DEGs in THLE2x cells treated with HUVEC-CM. One significant module was selected following protein-protein interaction (PPI) network generation, and thirteen hub genes were identified from the module. The prognostic values of the hub genes were evaluated using Kaplan-Meier (KM) plotter, and three genes (IRF7, IFIT1, and IFITM1) correlated with poor disease specific survival (DSS) in HCC patients with chronic hepatitis. A comparison of the DEGs identified in HUVEC-stimulated THLE2x cells with four publicly available HBV-related HCC microarray datasets revealed that PLAC8 was consistently downregulated in all four HCC datasets as well as in HUVEC-CM treated THLE2x cells. KM plots revealed that PLAC8 correlated with worse relapse free survival and progression free survival in HCC patients with hepatitis B virus infection. This study provided molecular insights which may help develop a deeper understanding of HBV-host stromal cell interaction and open avenues for future research.
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Affiliation(s)
| | - Prachi Sharma
- Amity Institute of Molecular Medicine & Stem Cell Research, AUUP, Noida, India
| | - Bornika Roy
- Amity Institute of Molecular Medicine & Stem Cell Research, AUUP, Noida, India
| | - Shivani Jaiswal
- Amity Institute of Molecular Medicine & Stem Cell Research, AUUP, Noida, India
| | - Mehreen Aftab
- Division of Cellular and Molecular Oncology, National Institute of Cancer Prevention and Research, Noida, India
| | - Shinjinee Sengupta
- Amity Institute of Molecular Medicine & Stem Cell Research, AUUP, Noida, India
| | - Sampa Ghose
- Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India.
| | - Subhrajit Biswas
- Amity Institute of Molecular Medicine & Stem Cell Research, AUUP, Noida, India.
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4
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Olie CS, Pinto-Fernández A, Damianou A, Vendrell I, Mei H, den Hamer B, van der Wal E, de Greef JC, Raz V, Kessler BM. USP18 is an essential regulator of muscle cell differentiation and maturation. Cell Death Dis 2023; 14:231. [PMID: 37002195 PMCID: PMC10066380 DOI: 10.1038/s41419-023-05725-z] [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: 10/27/2022] [Revised: 02/14/2023] [Accepted: 03/07/2023] [Indexed: 04/03/2023]
Abstract
The ubiquitin proteasomal system is a critical regulator of muscle physiology, and impaired UPS is key in many muscle pathologies. Yet, little is known about the function of deubiquitinating enzymes (DUBs) in the muscle cell context. We performed a genetic screen to identify DUBs as potential regulators of muscle cell differentiation. Surprisingly, we observed that the depletion of ubiquitin-specific protease 18 (USP18) affected the differentiation of muscle cells. USP18 depletion first stimulated differentiation initiation. Later, during differentiation, the absence of USP18 expression abrogated myotube maintenance. USP18 enzymatic function typically attenuates the immune response by removing interferon-stimulated gene 15 (ISG15) from protein substrates. However, in muscle cells, we found that USP18, predominantly nuclear, regulates differentiation independent of ISG15 and the ISG response. Exploring the pattern of RNA expression profiles and protein networks whose levels depend on USP18 expression, we found that differentiation initiation was concomitant with reduced expression of the cell-cycle gene network and altered expression of myogenic transcription (co) factors. We show that USP18 depletion altered the calcium channel gene network, resulting in reduced calcium flux in myotubes. Additionally, we show that reduced expression of sarcomeric proteins in the USP18 proteome was consistent with reduced contractile force in an engineered muscle model. Our results revealed nuclear USP18 as a critical regulator of differentiation initiation and maintenance, independent of ISG15 and its role in the ISG response.
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Affiliation(s)
- Cyriel Sebastiaan Olie
- Human Genetics department, Leiden University Medical Centre, 2333ZC, Leiden, The Netherlands
| | - Adán Pinto-Fernández
- Chinese Academy for Medical Sciences Oxford Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford, OX3 7FZ, UK
- Target Discovery Institute, Centre for Medicines Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7FZ, UK
| | - Andreas Damianou
- Chinese Academy for Medical Sciences Oxford Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford, OX3 7FZ, UK
- Target Discovery Institute, Centre for Medicines Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7FZ, UK
| | - Iolanda Vendrell
- Chinese Academy for Medical Sciences Oxford Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford, OX3 7FZ, UK
- Target Discovery Institute, Centre for Medicines Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7FZ, UK
| | - Hailiang Mei
- Sequencing Analysis Support Core, Leiden University Medical Centre, 2333ZC, Leiden, The Netherlands
| | - Bianca den Hamer
- Human Genetics department, Leiden University Medical Centre, 2333ZC, Leiden, The Netherlands
| | - Erik van der Wal
- Human Genetics department, Leiden University Medical Centre, 2333ZC, Leiden, The Netherlands
| | - Jessica C de Greef
- Human Genetics department, Leiden University Medical Centre, 2333ZC, Leiden, The Netherlands
| | - Vered Raz
- Human Genetics department, Leiden University Medical Centre, 2333ZC, Leiden, The Netherlands.
| | - Benedikt M Kessler
- Chinese Academy for Medical Sciences Oxford Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford, OX3 7FZ, UK.
- Target Discovery Institute, Centre for Medicines Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7FZ, UK.
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Deng Y, Yu C, Chen L, Zhang X, Lei Q, Liu Q, Cai G, Liu F. ARV-771 Acts as an Inducer of Cell Cycle Arrest and Apoptosis to Suppress Hepatocellular Carcinoma Progression. Front Pharmacol 2022; 13:858901. [PMID: 35600879 PMCID: PMC9114478 DOI: 10.3389/fphar.2022.858901] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 04/19/2022] [Indexed: 11/13/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the most commonly diagnosed liver cancer with limited treatment options and extremely poor prognosis worldwide. Recently, the proteolysis targeting chimeras (PROTACs), which aim to induce proteasome-mediated degradation of interesting proteins via recruiting E3 ligases, have become the advanced tools and attractive molecules for cancer treatment. However, the anticancer effects of PROTACs in HCC remain to be clarified. Here, we evaluate the anticancer activity of ARV-771, a previously reported PROTAC compound designed for bromodomain and extra-terminal domain (BET) proteins, in HCC. We show that ARV-771 suppresses the cell viability and colony formation of HCC cells via arresting cell cycle progression and triggering apoptosis. Further investigations reveal that ARV-771 notably downregulates multiple non-proteasomal deubiquitinases which are critical to the development of cancers. Additionally, HCC cells can decrease their sensitivity to ARV-771 via activating the MEK/ERK and p38 MAPKs. ARV-771 also inhibits HCC progression in vivo. Moreover, we show that ARV-771 and sorafenib, a Raf inhibitor that clinically used for targeted therapy of liver cancer, can synergistically inhibit the growth of HCC cells. Overall, this study not only explores the anticancer activity of ARV-771 and its underlying mechanisms in HCC, but also deepens our understanding of deubiquitinases, MAPKs, cell cycle, and apoptosis induction in cancer therapy.
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Affiliation(s)
- Yuanfei Deng
- Department of Pathology, The First People’s Hospital of Foshan, Foshan, China
- *Correspondence: Yuanfei Deng, ; Gengxi Cai, ; Fang Liu,
| | - Cuifu Yu
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Lushi Chen
- Health Management Center, The First People’s Hospital of Foshan, Foshan, China
| | - Xin Zhang
- Department of Pathology, The First People’s Hospital of Foshan, Foshan, China
| | - Qiucheng Lei
- Department of Hepatopancreatic Surgery, The First People’s Hospital of Foshan, Foshan, China
| | - Qing Liu
- Department of Pathology, The First People’s Hospital of Foshan, Foshan, China
| | - Gengxi Cai
- Department of Breast Surgery, The First People’s Hospital of Foshan, Foshan, China
- *Correspondence: Yuanfei Deng, ; Gengxi Cai, ; Fang Liu,
| | - Fang Liu
- Department of Pathology, The First People’s Hospital of Foshan, Foshan, China
- *Correspondence: Yuanfei Deng, ; Gengxi Cai, ; Fang Liu,
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6
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Choi HS, Baek KH. Pro-apoptotic and anti-apoptotic regulation mediated by deubiquitinating enzymes. Cell Mol Life Sci 2022; 79:117. [PMID: 35118522 PMCID: PMC11071826 DOI: 10.1007/s00018-022-04132-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 12/20/2021] [Accepted: 01/05/2022] [Indexed: 12/16/2022]
Abstract
Although damaged cells can be repaired, cells that are considered unlikely to be repaired are eliminated through apoptosis, a type of predicted cell death found in multicellular organisms. Apoptosis is a structured cell death involving alterations to the cell morphology and internal biochemical changes. This process involves the expansion and cracking of cells, changes in cell membranes, nuclear fragmentation, chromatin condensation, and chromosome cleavage, culminating in the damaged cells being eaten and processed by other cells. The ubiquitin-proteasome system (UPS) is a major cellular pathway that regulates the protein levels through proteasomal degradation. This review proposes that apoptotic proteins are regulated through the UPS and describes a unique direction for cancer treatment by controlling proteasomal degradation of apoptotic proteins, and small molecules targeted to enzymes associated with UPS.
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Affiliation(s)
- Hae-Seul Choi
- Department of Biomedical Science, CHA University, 335 Pangyo-Ro, Bundang-Gu, Seongnam-Si, Gyeonggi-Do, 13488, Republic of Korea
| | - Kwang-Hyun Baek
- Department of Biomedical Science, CHA University, 335 Pangyo-Ro, Bundang-Gu, Seongnam-Si, Gyeonggi-Do, 13488, Republic of Korea.
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7
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Wu X, Lin L, Zhou F, Yu S, Chen M, Wang S. The Highly Expressed IFIT1 in Nasopharyngeal Carcinoma Enhances Proliferation, Migration, and Invasion of Nasopharyngeal Carcinoma Cells. Mol Biotechnol 2022; 64:621-636. [PMID: 35038119 DOI: 10.1007/s12033-021-00439-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 12/15/2021] [Indexed: 11/30/2022]
Abstract
In this study, we aimed to identify potential targets modulating the progression of nasopharyngeal carcinoma (NPC) using integrated bioinformatics analysis and functional assays. Differentially expressed genes (DEGs) between NPC and normal tissues samples were obtained from publicly availably microarray datasets (GSE68799, GSE34573, and GSE53819) in the Gene Expression Omnibus (GEO) database. The bioinformatics analysis identified 49 common DEGs from three GEO datasets, which were mainly enriched in cytokine/chemokine pathways and extracellular matrix organization pathway. Further protein-protein interaction network analysis identified 11 hub genes from the 49 DEGs. The 11 hub genes were significantly up-regulated in the NPC tissues when compared to normal tissues by analyzing the Oncomine database. The 8 hub genes including COL5A1, COL7A1, COL22A1, CXCL11, IFI44L, IFIT1, RSAD2, and USP18 were significantly up-regulated in the NPC tissues when compared to normal tissues by using the Oncomine database. Further validation studies showed that IFIT1 was up-regulated in the NPC cells. Knockdown of IFI1T1 suppressed the proliferation, migration, and invasion of NPC cells; while IFIT1 overexpression promoted the proliferation, migration, and invasion of NPC cells. In conclusion, a total of 49 DEGs and 11 hub genes in NPC using the integrated bioinformatics analysis. IFIT1 was up-regulated in the NPC cells lines, and IFIT1 may act as an oncogene by promoting NPC cell proliferation, migration, and invasion.
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Affiliation(s)
- Xuan Wu
- Department of Oncology, Peking University Shenzhen Hospital, Shenzhen, 518036, China. .,Shenzhen Key Laboratory of Gastrointestinal Cancer Translational Research, Shenzhen, 518036, China. .,Cancer Institute of Shenzhen-PKU-HKUST Medical Center, Shenzhen, 518036, China.
| | - Liping Lin
- Department of Oncology, Guangzhou Panyu Central Hospital, Guangzhou, 511400, China
| | - Fengrui Zhou
- Department of Oncology, Peking University Shenzhen Hospital, Shenzhen, 518036, China.,Shenzhen Key Laboratory of Gastrointestinal Cancer Translational Research, Shenzhen, 518036, China.,Cancer Institute of Shenzhen-PKU-HKUST Medical Center, Shenzhen, 518036, China
| | - Shaokang Yu
- Department of Oncology, Peking University Shenzhen Hospital, Shenzhen, 518036, China.,Shenzhen Key Laboratory of Gastrointestinal Cancer Translational Research, Shenzhen, 518036, China.,Cancer Institute of Shenzhen-PKU-HKUST Medical Center, Shenzhen, 518036, China
| | - Minhua Chen
- Community Healthcare Center, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518033, China
| | - Shubin Wang
- Department of Oncology, Peking University Shenzhen Hospital, Shenzhen, 518036, China. .,Shenzhen Key Laboratory of Gastrointestinal Cancer Translational Research, Shenzhen, 518036, China. .,Cancer Institute of Shenzhen-PKU-HKUST Medical Center, Shenzhen, 518036, China.
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8
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Feng P, Ge Z, Guo Z, Lin L, Yu Q. A Comprehensive Analysis of the Downregulation of miRNA-1827 and Its Prognostic Significance by Targeting SPTBN2 and BCL2L1 in Ovarian Cancer. Front Mol Biosci 2021; 8:687576. [PMID: 34179092 PMCID: PMC8226272 DOI: 10.3389/fmolb.2021.687576] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 05/19/2021] [Indexed: 12/19/2022] Open
Abstract
Background: Previous studies demonstrated that miRNA-1827 could repress various cancers on proliferation, angiogenesis, and metastasis. However, little attention has been paid to its role in ovarian cancer as a novel biomarker or intervention target, especially its clinical significance and underlying regulatory network. Methods: A meta-analysis of six microarrays was adopted here to determine the expression trend of miRNA-1827, and was further validated by gene expression profile data and cellular experiments. We explored the functional annotations through enrichment analysis for the differentially expressed genes targeted by miRNA-1827. Subsequently, we identified two hub genes, SPTBN2 and BCL2L1, based on interaction analysis using two online archive tools, miRWALK (it consolidates the resources of 12 miRNA-focused servers) and Gene Expression Profiling Interactive Analysis (GEPIA). Finally, we validated their characteristics and clinical significance in ovarian cancer. Results: The comprehensive meta-analysis revealed that miRNA-1827 was markedly downregulated in clinical and cellular specimens. Transfection of the miRNA-1827 mimic could significantly inhibit cellular proliferation. Concerning its target genes, they were involved in diverse biological processes related to tumorigenesis, such as cell proliferation, migration, and the apoptosis signaling pathway. Moreover, interaction analysis proved that two hub genes, SPTBN2 and BCL2L1, were highly associated with poor prognosis in ovarian cancer. Conclusion: These integrated bioinformatic analyses indicated that miRNA-1827 was dramatically downregulated in ovarian cancer as a tumor suppressor. The upregulation of its downstream modulators, SPTBN2 and BCL2L1, was associated with an unfavorable prognosis. Thus, the present study has identified miRNA-1827 as a potential intervention target for ovarian cancer based on our bioinformatic analysis processes.
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Affiliation(s)
- Penghui Feng
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhitong Ge
- Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zaixin Guo
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lin Lin
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Department of Obstetrics and Gynecology, The Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region, Beijing, China
| | - Qi Yu
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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9
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Zhang L, Zhang N, Li X, Wu W, Zhang Y, Wang J. High expression of USP18 is associated with the growth of colorectal carcinoma. Histol Histopathol 2021; 36:697-704. [PMID: 34042164 DOI: 10.14670/hh-18-346] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
AIM To investigate whether USP18 can be used as a predictive marker for the diagnosis and development of colorectal cancer. METHODS The Gene Expression Omnibus (GEO) Dataset and the Cancer Genome Atlas (TCGA) database were used to select differential proteins for the ubiquitin-specific peptidases (USPs). The extensive target prediction and network analysis methods were used to assess the association with the USP18 interacting proteins, as well as the statistical correlation between USP18 and the clinical pathology parameters. The effects of USP18 on the proliferation of colorectal cancer were examined using CCK8. The effects of USP18 on the migration of colorectal cancer were examined using wound healing assays. Immunohistochemistry (IHC) was performed on the tissue microarray. RESULTS The results showed that the expression of USP18 was related to age (P=0.014). The positive rates of the USP18 protein in T1, T2, T3, and T4 were 0.00%, 22.92%, 78.38%, and 95.35%, respectively (P<0.00). The positive rates of the USP18 protein in I, II, III, and IV were 47.43%, 83.12%, 66.67%, and 100.00%, respectively (P<0.00). The Western blot assay showed that the expression of USP18 in colorectal cancer tissues was significantly higher than that in matched paracancerous tissues (P<0.05). The CCK8 experiments suggested that USP18 promoted the migration of CRC cells. Wound healing assays suggested that USP18 promoted the proliferation of CRC cells. CONCLUSION This study showed that USP18 can promote the proliferation of colorectal cancer cells and might be a potential biomarker for the diagnosis of CRC.
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Affiliation(s)
- Lin Zhang
- Department of Pathology, Affiliated Hospital of Jiaxing University/The First Hospital of Jiaxing, Zhejiang, China
| | - Ningning Zhang
- The First Affiliated Hospital, Dalian Medical University, Dalian, Liaoning, China
| | - Xin Li
- Department of Pathology, Affiliated Hospital of Jiaxing University/The First Hospital of Jiaxing, Zhejiang, China
| | - Wanxin Wu
- Department of Pathology, Affiliated Hospital of Jiaxing University/The First Hospital of Jiaxing, Zhejiang, China
| | - Yanping Zhang
- Department of Pathology, Affiliated Hospital of Jiaxing University/The First Hospital of Jiaxing, Zhejiang, China.
| | - Jingyu Wang
- Department of Pathology, Affiliated Hospital of Jiaxing University/The First Hospital of Jiaxing, Zhejiang, China.
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10
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Hou J, Han L, Zhao Z, Liu H, Zhang L, Ma C, Yi F, Liu B, Zheng Y, Gao C. USP18 positively regulates innate antiviral immunity by promoting K63-linked polyubiquitination of MAVS. Nat Commun 2021; 12:2970. [PMID: 34016972 PMCID: PMC8137702 DOI: 10.1038/s41467-021-23219-4] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 04/17/2021] [Indexed: 11/13/2022] Open
Abstract
Activation of MAVS, an adaptor molecule in Rig-I-like receptor (RLR) signaling, is indispensable for antiviral immunity, yet the molecular mechanisms modulating MAVS activation are not completely understood. Ubiquitination has a central function in regulating the activity of MAVS. Here, we demonstrate that a mitochondria-localized deubiquitinase USP18 specifically interacts with MAVS, promotes K63-linked polyubiquitination and subsequent aggregation of MAVS. USP18 upregulates the expression and production of type I interferon following infection with Sendai virus (SeV) or Encephalomyocarditis virus (EMCV). Mice with a deficiency of USP18 are more susceptible to RNA virus infection. USP18 functions as a scaffold protein to facilitate the re-localization of TRIM31 and enhances the interaction between TRIM31 and MAVS in mitochondria. Our results indicate that USP18 functions as a post-translational modulator of MAVS-mediated antiviral signaling. Ubiquitination has an important function in the regulation of antiviral immunity involving the signalling molecule MAVS. Here the authors investigate deubiquitinating enzymes and show USP18 regulates MAVS mediated antiviral signalling through modulating the ubiquitination of MAVS via promotion of interaction between MAVS and TRIM31.
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Affiliation(s)
- Jinxiu Hou
- Key Laboratory of Infection and Immunity of Shandong Province & Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, P. R. China
| | - Lulu Han
- Key Laboratory of Infection and Immunity of Shandong Province & Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, P. R. China
| | - Ze Zhao
- Department of Pharmacology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, P. R. China
| | - Huiqing Liu
- Department of Pharmacology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, P. R. China
| | - Lei Zhang
- Key Laboratory of Infection and Immunity of Shandong Province & Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, P. R. China
| | - Chunhong Ma
- Key Laboratory of Infection and Immunity of Shandong Province & Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, P. R. China
| | - Fan Yi
- Department of Pharmacology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, P. R. China
| | - Bingyu Liu
- Key Laboratory of Infection and Immunity of Shandong Province & Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, P. R. China
| | - Yi Zheng
- Key Laboratory of Infection and Immunity of Shandong Province & Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, P. R. China.
| | - Chengjiang Gao
- Key Laboratory of Infection and Immunity of Shandong Province & Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, P. R. China.
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11
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Lee CS, Kim S, Hwang G, Song J. Deubiquitinases: Modulators of Different Types of Regulated Cell Death. Int J Mol Sci 2021; 22:4352. [PMID: 33919439 PMCID: PMC8122337 DOI: 10.3390/ijms22094352] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/16/2021] [Accepted: 04/19/2021] [Indexed: 02/06/2023] Open
Abstract
The mechanisms and physiological implications of regulated cell death (RCD) have been extensively studied. Among the regulatory mechanisms of RCD, ubiquitination and deubiquitination enable post-translational regulation of signaling by modulating substrate degradation and signal transduction. Deubiquitinases (DUBs) are involved in diverse molecular pathways of RCD. Some DUBs modulate multiple modalities of RCD by regulating various substrates and are powerful regulators of cell fate. However, the therapeutic targeting of DUB is limited, as the physiological consequences of modulating DUBs cannot be predicted. In this review, the mechanisms of DUBs that regulate multiple types of RCD are summarized. This comprehensive summary aims to improve our understanding of the complex DUB/RCD regulatory axis comprising various molecular mechanisms for diverse physiological processes. Additionally, this review will enable the understanding of the advantages of therapeutic targeting of DUBs and developing strategies to overcome the side effects associated with the therapeutic applications of DUB modulators.
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Affiliation(s)
- Choong-Sil Lee
- Integrated OMICS for Biomedical Science, World Class University, Yonsei University, Seoul 120-749, Korea;
| | - Seungyeon Kim
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 120-749, Korea; (S.K.); (G.H.)
| | - Gyuho Hwang
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 120-749, Korea; (S.K.); (G.H.)
| | - Jaewhan Song
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 120-749, Korea; (S.K.); (G.H.)
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12
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Sandy Z, da Costa IC, Schmidt CK. More than Meets the ISG15: Emerging Roles in the DNA Damage Response and Beyond. Biomolecules 2020; 10:E1557. [PMID: 33203188 PMCID: PMC7698331 DOI: 10.3390/biom10111557] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/11/2020] [Accepted: 11/12/2020] [Indexed: 12/13/2022] Open
Abstract
Maintenance of genome stability is a crucial priority for any organism. To meet this priority, robust signalling networks exist to facilitate error-free DNA replication and repair. These signalling cascades are subject to various regulatory post-translational modifications that range from simple additions of chemical moieties to the conjugation of ubiquitin-like proteins (UBLs). Interferon Stimulated Gene 15 (ISG15) is one such UBL. While classically thought of as a component of antiviral immunity, ISG15 has recently emerged as a regulator of genome stability, with key roles in the DNA damage response (DDR) to modulate p53 signalling and error-free DNA replication. Additional proteomic analyses and cancer-focused studies hint at wider-reaching, uncharacterised functions for ISG15 in genome stability. We review these recent discoveries and highlight future perspectives to increase our understanding of this multifaceted UBL in health and disease.
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Affiliation(s)
| | | | - Christine K. Schmidt
- Manchester Cancer Research Centre, Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M20 4GJ, UK; (Z.S.); (I.C.d.C.)
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13
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Feng L, Wang K, Tang P, Chen S, Liu T, Lei J, Yuan R, Hu Z, Li W, Yu X. Deubiquitinase USP18 promotes the progression of pancreatic cancer via enhancing the Notch1-c-Myc axis. Aging (Albany NY) 2020; 12:19273-19292. [PMID: 33051403 PMCID: PMC7732327 DOI: 10.18632/aging.103760] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 07/06/2020] [Indexed: 01/24/2023]
Abstract
The dysregulation of deubiquitinating enzymes (DUBs), which regulate the stability of most cellular proteins, has been implicated in many human diseases, including cancers. Thus, DUBs can be considered potential therapeutic targets for many cancers. However, the role of deubiquitinase ubiquitin-specific protease 18 (USP18) in pancreatic cancer remains unknown. Here, we found that the deubiquitinase ubiquitin-specific protease 18 (USP18) is significantly upregulated in pancreatic cancer and is correlated with a shorter median overall and relapse-free survival. A functional assay demonstrated that overexpression of USP18 resulted in increased proliferation of pancreatic cancer cells. Conversely, these phenomena were reversed after USP18 was silenced in pancreatic cancer cells. Further investigation revealed that USP18 promoted cell progression by increasing c-Myc expression, which has been reported to control pancreatic cancer progression, and our data demonstrated that c-Myc is key for USP18-mediated pancreatic cancer cell progression in vitro and in vivo. Moreover, we found that USP18 promoted pancreatic cancer progression via upregulation of Notch-1-dependent c-Myc. Mechanistically, USP18 interacts with and removes K48-linked ubiquitin chains from Notch1, thereby stabilizing Notch1 and promoting the Notch1-c-Myc pathway. Our work identifies and validates USP18 as a pancreatic cancer oncogene and provides a potential druggable target for this intractable disease.
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Affiliation(s)
- Long Feng
- Department of Oncology, The Second Affiliated Hospital of Nanchang University, Nanchang University, Nanchang, China
| | - Kai Wang
- Hepatopancreatobiliary Surgery Division, Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang University, Nanchang, China
| | - Ping Tang
- Hepatopancreatobiliary Surgery Division, Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang University, Nanchang, China,Department of General Surgery, Hunan Youxian People's Hospital, Youxian, China
| | - Suyun Chen
- The Second Clinical Medical College, Nanchang University, Nanchang, China
| | - Tiande Liu
- Hepatopancreatobiliary Surgery Division, Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang University, Nanchang, China
| | - Jun Lei
- Hepatopancreatobiliary Surgery Division, Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang University, Nanchang, China
| | - Rongfa Yuan
- Hepatopancreatobiliary Surgery Division, Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang University, Nanchang, China
| | - Zhigang Hu
- Hepatopancreatobiliary Surgery Division, Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang University, Nanchang, China
| | - Wen Li
- Hepatopancreatobiliary Surgery Division, Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang University, Nanchang, China
| | - Xin Yu
- Hepatopancreatobiliary Surgery Division, Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang University, Nanchang, China
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14
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Diao W, Guo Q, Zhu C, Song Y, Feng H, Cao Y, Du M, Chen H. USP18 promotes cell proliferation and suppressed apoptosis in cervical cancer cells via activating AKT signaling pathway. BMC Cancer 2020; 20:741. [PMID: 32770981 PMCID: PMC7414560 DOI: 10.1186/s12885-020-07241-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 07/30/2020] [Indexed: 12/11/2022] Open
Abstract
Background The deubiquitinating (DUB) enzyme ubiquitin-specific protease 18 (USP18), also known as UBP43, is an ubiquitin-specific protease linked to several human malignancies. However, USP18’s underlying function in human cervical cancer remains unclear. In the current study, we aimed to analyse the role of USP18 and its signalling pathways in cervical cancer. Methods Quantitative real-time polymerase chain reaction (qRT-PCR) and immunohistochemical staining were performed to analyse USP18 levels in cervical cancer and matched to adjacent normal tissues. Moreover, RNA interference (RNAi) and lentiviral-mediated vector transfections were performed to silence and overexpress USP18, respectively, in cervical cancer cells. Further, Cell Counting Kit-8 (CCK-8) and Annexin V/PI staining assays were used to assess its biological function in cell proliferation and apoptosis, respectively. A xenograft model was used to examine USP18’s function in vivo. Results The present findings demonstrated that USP18 was overexpressed in cervical cancer specimens and cell lines. Silencing USP18 in SiHa and Caski cervical cancer cell lines inhibited cell proliferation, induced apoptosis, and promoted cleaved caspase-3 expression. In contrast, USP18 overexpression showed the opposite effects in human HcerEpic cells. A Gene Set Enrichment Analysis revealed that USP18 was enriched in the PI3K/AKT signalling pathway in cervical cancer. Hence, the PI3K/AKT inhibitor LY294002 was used to determine the relationship between USP18 and AKT in cervical cancer cells. Importantly, LY294002 significantly abolished the effects of USP18 overexpression in cervical cancer cells. In vivo, USP18 silencing inhibited human cervical cancer cells’ tumorigenicity. Conclusions The current study indicates that USP18 is an oncogenic gene in cervical cancer. Our findings not only deepened the understanding of USP18’s biological function in cervical cancer pathogenesis, but we also provided novel insight for cervical cancer therapy. Trial registration Retrospectively registered.
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Affiliation(s)
- Wenjing Diao
- Medical Center of Cervical Diseases, Obstetrics and Gynecology Hospital, Fudan University, Fangxie Road No. 419, Shanghai, 200011, P.R. China
| | - Qisang Guo
- Medical Center of Cervical Diseases, Obstetrics and Gynecology Hospital, Fudan University, Fangxie Road No. 419, Shanghai, 200011, P.R. China
| | - Caiying Zhu
- Medical Center of Cervical Diseases, Obstetrics and Gynecology Hospital, Fudan University, Fangxie Road No. 419, Shanghai, 200011, P.R. China
| | - Yu Song
- Medical Center of Cervical Diseases, Obstetrics and Gynecology Hospital, Fudan University, Fangxie Road No. 419, Shanghai, 200011, P.R. China
| | - Hua Feng
- Medical Center of Cervical Diseases, Obstetrics and Gynecology Hospital, Fudan University, Fangxie Road No. 419, Shanghai, 200011, P.R. China
| | - Yuankui Cao
- Medical Center of Cervical Diseases, Obstetrics and Gynecology Hospital, Fudan University, Fangxie Road No. 419, Shanghai, 200011, P.R. China
| | - Ming Du
- Medical Center of Cervical Diseases, Obstetrics and Gynecology Hospital, Fudan University, Fangxie Road No. 419, Shanghai, 200011, P.R. China.
| | - Huifen Chen
- Department of Laboratory Medicine, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Changle Road No.536 , Jingan District, Shanghai, 200040, P.R. China.
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15
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Tong HV, Hoan NX, Binh MT, Quyen DT, Meyer CG, Hang DTT, Hang DTD, Son HA, Van Luong H, Thuan ND, Giang NT, Quyet D, Bang MH, Song LH, Velavan TP, Toan NL. Upregulation of Enzymes involved in ISGylation and Ubiquitination in patients with hepatocellular carcinoma. Int J Med Sci 2020; 17:347-353. [PMID: 32132870 PMCID: PMC7053354 DOI: 10.7150/ijms.39823] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Accepted: 12/12/2019] [Indexed: 12/31/2022] Open
Abstract
Background: ISGylation is the conjugation of ISG15 with target proteins. ISGylation occurs through an enzymatic cascade, which is similar to that of ubiquitination. Through ISGylation, ISG15 can bind to proteins involved in cell proliferation and differentiation, thus promoting genesis and progression of malignancies. The present study aims to investigate expression of genes involved in ISGylation and ubiquitination in patients with hepatocellular carcinoma and to correlate gene expression with clinical laboratory parameters of these patients. Methods: mRNA expression of genes encoding enzymes involved in the ISGylation process (EFP, HERC5, UBA1, UBC and USP18) was evaluated by quantitative real-time PCR in 38 pairs of tumour and adjacent non-tumour tissues from patients with hepatocellular carcinoma and correlated with distinct clinical laboratory parameters. Results: Relative mRNA expression of EFP, HERC5, UBA1 and USP18 was significantly higher in tumour tissues compared to adjacent non-tumour tissues (P=0.006; 0.012; 0.02 and 0.039, respectively). The correlation pattern of mRNA expression between genes in the tumours differed from the pattern in adjacent non-tumour tissues. Relative expression of EFP, HERC5 and UBA1 in adjacent non-tumour tissues was positively associated with direct bilirubin levels (Spearman's rho=0.31, 0.33 and 0.45; P=0.06, 0.05 and 0.01, respectively) and relative expression of USP18 in adjacent non-tumour tissues correlated negatively with ALT levels (Spearman's rho= -0.33, P=0.03). Conclusions: EFP, HERC5, UBA1, and USP18 genes are upregulated in tumour tissues of patients with HCC and, thus, may be associated with the pathogenesis of hepatocellular carcinoma.
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Affiliation(s)
- Hoang Van Tong
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, Hanoi, Vietnam.,Department of Pathophysiology, Vietnam Military Medical University, Hanoi, Vietnam
| | - Nghiem Xuan Hoan
- 108 Military Central Hospital, Hanoi, Vietnam.,Vietnamese-German Center of Excellence in Medical Research, Hanoi, Vietnam
| | - Mai Thanh Binh
- 108 Military Central Hospital, Hanoi, Vietnam.,Vietnamese-German Center of Excellence in Medical Research, Hanoi, Vietnam.,Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany
| | - Dao Thanh Quyen
- 108 Military Central Hospital, Hanoi, Vietnam.,Vietnamese-German Center of Excellence in Medical Research, Hanoi, Vietnam
| | - Christian G Meyer
- Vietnamese-German Center of Excellence in Medical Research, Hanoi, Vietnam.,Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany.,Duy Tan University, Da Nang, Vietnam
| | - Dinh Thi Thu Hang
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, Hanoi, Vietnam
| | | | - Ho Anh Son
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, Hanoi, Vietnam.,Department of Pathophysiology, Vietnam Military Medical University, Hanoi, Vietnam
| | - Hoang Van Luong
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, Hanoi, Vietnam
| | - Nghiem Duc Thuan
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, Hanoi, Vietnam
| | - Nguyen Truong Giang
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, Hanoi, Vietnam
| | - Do Quyet
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, Hanoi, Vietnam
| | | | - Le Huu Song
- 108 Military Central Hospital, Hanoi, Vietnam.,Vietnamese-German Center of Excellence in Medical Research, Hanoi, Vietnam
| | - Thirumalaisamy P Velavan
- Vietnamese-German Center of Excellence in Medical Research, Hanoi, Vietnam.,Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany.,Duy Tan University, Da Nang, Vietnam
| | - Nguyen Linh Toan
- Department of Pathophysiology, Vietnam Military Medical University, Hanoi, Vietnam
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16
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Functional analysis of deubiquitylating enzymes in tumorigenesis and development. Biochim Biophys Acta Rev Cancer 2019; 1872:188312. [DOI: 10.1016/j.bbcan.2019.188312] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 08/16/2019] [Accepted: 08/16/2019] [Indexed: 02/06/2023]
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17
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Duan S, Yu S, Yuan T, Yao S, Zhang L. Exogenous Let-7a-5p Induces A549 Lung Cancer Cell Death Through BCL2L1-Mediated PI3Kγ Signaling Pathway. Front Oncol 2019; 9:808. [PMID: 31508368 PMCID: PMC6716507 DOI: 10.3389/fonc.2019.00808] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 08/07/2019] [Indexed: 01/07/2023] Open
Abstract
Elevated expression of let-7a-5p contributes to suppression of lung cancer, in which let-7a-5p, as exosome cargo, can be transported from macrophages to lung cancer cells, yet the role of let-7a-5p remains unclear. Utilizing bioinformatics methods and cellular experiments, this study was designed and conducted to identify let-7a-5p regulatory network in lung cancer. Bioinformatics analysis and Kaplan-Meier survival analysis revealed that let-7a-5p could directly target BCL2L1, and aberrant expression of let-7a-5p affects the survival of lung cancer patients, which was confirmed in A549 lung cancer cells using luciferase reporter assay. Moreover, let-7a-5p inhibited BCL2L1 expression and suppressed lung cancer cell proliferation, migration, and invasion. Functionally, overexpression of let-7a-5p promoted both autophagy and cell death in A549 lung cancer cells through PI3Kγ signaling pathway, whereas the apoptosis and pyroptosis of A549 lung cancer cells were unaffected. Furthermore, aberrant expression of BCL2L1 significantly altered the expression of lung cancer biomarkers such as MYC, EGFR, and Vimentin. To sum up, these data demonstrate that exogenous let-7a-5p induces A549 lung cancer cell death through BCL2L1-mediated PI3Kγ signaling pathway, which may be a useful target for lung cancer treatment.
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Affiliation(s)
- Shuyin Duan
- Key Laboratory of Birth Regulation and Control Technology of National Health Commission of China, Shandong Maternal and Child Health Care Hospital, Jinan, China
- School of Public Health, Zhengzhou University, Zhengzhou, China
| | - Songcheng Yu
- School of Public Health, Zhengzhou University, Zhengzhou, China
| | - Teng Yuan
- College of Jitang, North China University of Science and Technology, Tangshan, China
| | - Sanqiao Yao
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Lin Zhang
- Key Laboratory of Birth Regulation and Control Technology of National Health Commission of China, Shandong Maternal and Child Health Care Hospital, Jinan, China
- School of Public Health and Management, Weifang Medical University, Weifang, China
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18
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Kong F, You H, Kong D, Zheng K, Tang R. The interaction of hepatitis B virus with the ubiquitin proteasome system in viral replication and associated pathogenesis. Virol J 2019; 16:73. [PMID: 31146743 PMCID: PMC6543661 DOI: 10.1186/s12985-019-1183-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 05/20/2019] [Indexed: 12/21/2022] Open
Abstract
Background The ubiquitin proteasome system (UPS) regulates the expression levels of cellular proteins by ubiquitination of protein substrates followed by their degradation via the proteasome. As a highly conserved cellular degradation mechanism, the UPS affects a variety of biological processes and participates in viral propagation. Main body During hepatitis B virus (HBV) infection, the UPS is shown to act as a double-edged sword in viral pathogenesis. On the one hand, the UPS acts as a host defense mechanism to selectively recognize HBV proteins as well as special cellular proteins that favor the viral life cycle and induces their ubiquitin-dependent proteasomal degradation to limit HBV infection. On the other hand, the HBV has evolved to subvert the UPS function for its own advantage. Moreover, in the infected hepatocytes, certain cellular proteins that are dependent on the UPS are involved in abnormal biological processes which are mediated by HBV. Conclusion The molecular interaction of HBV with the UPS to modulate viral propagation and pathogenesis is summarized in the review. Considering the important role of the UPS in HBV infection, a better understanding of the HBV-UPS interaction could provide novel insight into the mechanisms that are involved in viral replication and pathogenesis and help to develop potential treatment strategies targeting the UPS.
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Affiliation(s)
- Fanyun Kong
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Hongjuan You
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Delong Kong
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Kuiyang Zheng
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.,National Demonstration Center for Experimental Basic Medical Sciences Education, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Renxian Tang
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China. .,National Demonstration Center for Experimental Basic Medical Sciences Education, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.
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19
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USP18 and ISG15 coordinately impact on SKP2 and cell cycle progression. Sci Rep 2019; 9:4066. [PMID: 30858391 PMCID: PMC6411882 DOI: 10.1038/s41598-019-39343-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 12/19/2018] [Indexed: 01/08/2023] Open
Abstract
USP18 is an isopeptidase that cleaves the ubiquitin-like ISG15 from conjugates and is also an essential negative feedback regulator of type I interferon signaling. We and others reported that USP18 protein is stabilized by ISG15 and targeted for degradation by SKP2 (S-phase kinase associated protein 2), the substrate-recognition subunit of the SCFSKP2 ubiquitin E3 ligase complex, which operates in cell cycle progression. Here, we have analyzed how, under non stimulated conditions, USP18, ISG15 and SKP2 communicate with each other, by enforcing or silencing their expression. We found that USP18 and SKP2 interact and that free ISG15 abrogates the complex, liberating USP18 from degradation and concomitantly driving SKP2 to degradation and/or ISGylation. These data reveal a dynamic interplay where the substrate USP18 stabilizes SKP2, both exogenous and endogenous. Consistent with this we show that silencing of baseline USP18 slows down progression of HeLa S3 cells towards S phase. Our findings point to USP18 and ISG15 as unexpected new SKP2 regulators, which aid in cell cycle progression at homeostasis.
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