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Li H, Liu BJ, Xu J, Song SS, Ba R, Zhang J, Huan XJ, Wang D, Miao ZH, Liu T, He JX, Xiong B. Design, synthesis, and biological evaluation of pyrido[2,3-d]pyrimidin-7(8H)-one derivatives as potent USP1 inhibitors. Eur J Med Chem 2024; 275:116568. [PMID: 38889606 DOI: 10.1016/j.ejmech.2024.116568] [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: 04/20/2024] [Revised: 05/24/2024] [Accepted: 06/02/2024] [Indexed: 06/20/2024]
Abstract
USP1 has emerged as a novel and potential target for drug discovery in single therapeutic agents or combination with chemotherapy and molecular targeted therapy. In this study, based on the disclosed structure of ML323 and KSQ-4279, we designed and synthesized a series of pyrido[2,3-d]pyrimidin-7(8H)-one derivatives as potent USP1 inhibitors by cyclization strategy and the systematic structure-activity relationship exploration was conducted. The representative compounds 1k, 1m and 2d displayed excellent USP1/UAF inhibition and exhibited strong antiproliferation effect in NCI-H1299 cells. Further flow cytometry analysis revealed that they could arrest breast cancer cells MDA-MB-436 in the S phase. Inhibition mechanism study of compound 1m indicated these derivatives acted as reversible and noncompetitive USP1 inhibitors. Of note, the combination of compound 1m with PARP inhibitor olaparib generated enhanced cell killing in olaparib-resistant MDA-MB-436/OP cells, and compound 1m exhibited excellent oral pharmacokinetic properties in mice. Overall, our efforts may provide a reliable basis for the development of novel USP1 inhibitor as a single therapeutic agent and in combination with PARP inhibitors.
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Affiliation(s)
- Hongrui Li
- Shenyang Pharmaceutical University, 103 Wenhua Rd, Shenyang, Liaoning, 110016, PR China; Department of Medicinal Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, PR China; State Key Laboratory of Chemical Biology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, PR China; Yangtze Delta Drug Advanced Research Institute, 100 Dongtinghu Road, Nantong, 226133, PR China
| | - Ben-Jin Liu
- School of Pharmacy, Jiangxi Medical College, Nanchang University, Nanchang, PR China; State Key Laboratory of Drug Research, Cancer Research Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai, 201203, PR China
| | - Jiahao Xu
- Department of Medicinal Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, PR China; State Key Laboratory of Chemical Biology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, PR China; Yangtze Delta Drug Advanced Research Institute, 100 Dongtinghu Road, Nantong, 226133, PR China; School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang, 330004, PR China
| | - Shan-Shan Song
- State Key Laboratory of Drug Research, Cancer Research Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai, 201203, PR China
| | - Ruixian Ba
- Shenyang Pharmaceutical University, 103 Wenhua Rd, Shenyang, Liaoning, 110016, PR China; Department of Medicinal Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, PR China; State Key Laboratory of Chemical Biology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, PR China; Yangtze Delta Drug Advanced Research Institute, 100 Dongtinghu Road, Nantong, 226133, PR China
| | - Junjie Zhang
- Department of Medicinal Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, PR China; State Key Laboratory of Chemical Biology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, PR China; University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, PR China
| | - Xia-Juan Huan
- University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, PR China; State Key Laboratory of Drug Research, Cancer Research Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai, 201203, PR China
| | - Dun Wang
- Shenyang Pharmaceutical University, 103 Wenhua Rd, Shenyang, Liaoning, 110016, PR China
| | - Ze-Hong Miao
- School of Pharmacy, Jiangxi Medical College, Nanchang University, Nanchang, PR China; University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, PR China; State Key Laboratory of Drug Research, Cancer Research Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai, 201203, PR China
| | - Tongchao Liu
- Department of Medicinal Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, PR China; State Key Laboratory of Chemical Biology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, PR China.
| | - Jin-Xue He
- University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, PR China; State Key Laboratory of Drug Research, Cancer Research Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai, 201203, PR China.
| | - Bing Xiong
- Department of Medicinal Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, PR China; State Key Laboratory of Chemical Biology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, PR China; University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, PR China; Yangtze Delta Drug Advanced Research Institute, 100 Dongtinghu Road, Nantong, 226133, PR China.
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2
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Kong L, Jin X. Dysregulation of deubiquitination in breast cancer. Gene 2024; 902:148175. [PMID: 38242375 DOI: 10.1016/j.gene.2024.148175] [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: 10/25/2023] [Revised: 12/04/2023] [Accepted: 01/16/2024] [Indexed: 01/21/2024]
Abstract
Breast cancer (BC) is a highly frequent malignant tumor that poses a serious threat to women's health and has different molecular subtypes, histological subtypes, and biological features, which act by activating oncogenic factors and suppressing cancer inhibitors. The ubiquitin-proteasome system (UPS) is the main process contributing to protein degradation, and deubiquitinases (DUBs) are reverse enzymes that counteract this process. There is growing evidence that dysregulation of DUBs is involved in the occurrence of BC. Herein, we review recent research findings in BC-associated DUBs, describe their nature, classification, and functions, and discuss the potential mechanisms of DUB-related dysregulation in BC. Furthermore, we present the successful treatment of malignant cancer with DUB inhibitors, as well as analyzing the status of targeting aberrant DUBs in BC.
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Affiliation(s)
- Lili Kong
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo 315211, Zhejiang, China
| | - Xiaofeng Jin
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo 315211, Zhejiang, China.
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3
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Hu Y, Li X, Zhang J, Liu D, Lu R, Li JD. A genome-wide CRISPR screen identifies USP1 as a novel regulator of the mammalian circadian clock. FEBS J 2024; 291:445-457. [PMID: 37909373 DOI: 10.1111/febs.16990] [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: 03/13/2023] [Revised: 09/07/2023] [Accepted: 10/27/2023] [Indexed: 11/03/2023]
Abstract
The circadian clock is generated by a molecular timekeeping mechanism coordinating daily oscillations of physiology and behaviors in mammals. In the mammalian circadian clockwork, basic helix-loop-helix ARNT-like protein 1 (BMAL1) is a core circadian component whose defects lead to circadian disruption and elicit behavioral arrhythmicity. To identify previously unknown regulators for circadian clocks, we searched for genes influencing BMAL1 protein level by using a CRISPR/Cas9-based genome-wide knockout library. As a result, we found that the deubiquitinase ubiquitin carboxyl-terminal hydrolase 1 (USP1) positively affects BMAL1 protein abundance. Overexpression of wild-type USP1, but not a deubiquitinase-inactive mutant USP1, upregulated BMAL1 protein level, whereas genetic ablation of USP1 downregulated BMAL1 protein level in U2OS cells. Furthermore, treatment with USP1 inhibitors led to significant downregulation of BMAL1 protein in U2OS cells as well as mouse tissues. Subsequently, genetic ablation or pharmacological inhibition of USP1 resulted in reduced mRNA levels of a panel of clock genes and disrupted circadian rhythms in U2OS cells. Mechanistically, USP1 was able to de-ubiquitinate BMAL1 and inhibit the proteasomal degradation of BMAL1. Interestingly, the expression of Usp1 was much higher than the other two deubiquitinases of BMAL1 (Usp2 and Usp9X) in the mouse heart, implying a tissue-specific function of USP1 in the regulation of BMAL1 stability. Our work thus identifies deubiquitinase USP1 as a previously unknown regulator of the mammalian circadian clock and highlights the potential of genome-wide CRISPR screens in the identification of regulators for the circadian clock.
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Affiliation(s)
- Ying Hu
- Furong Laboratory, Department of Anaesthesiology, Xiangya Hospital, Central South University, Changsha, China
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, China
- MOE Key Laboratory of Rare Pediatric Diseases, Changsha, China
| | - Xin Li
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, China
- MOE Key Laboratory of Rare Pediatric Diseases, Changsha, China
| | - Jing Zhang
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, China
| | - Dengfeng Liu
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, China
| | - Renbin Lu
- Furong Laboratory, Department of Anaesthesiology, Xiangya Hospital, Central South University, Changsha, China
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, China
- Department of Basic Medical Sciences, Changsha Medical University, Changsha, China
- National Clinical Research Center for Geratric Disorder, Xiangya Hospital, Central South University, Changsha, China
| | - Jia-Da Li
- Furong Laboratory, Department of Anaesthesiology, Xiangya Hospital, Central South University, Changsha, China
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, China
- MOE Key Laboratory of Rare Pediatric Diseases, Changsha, China
- Hunan Key Laboratory of Animal Models for Human Diseases, Changsha, China
- National Clinical Research Center for Geratric Disorder, Xiangya Hospital, Central South University, Changsha, China
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4
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Huang P, Wang Y, Zhang P, Li Q. Ubiquitin-specific peptidase 1: assessing its role in cancer therapy. Clin Exp Med 2023; 23:2953-2966. [PMID: 37093451 DOI: 10.1007/s10238-023-01075-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 04/11/2023] [Indexed: 04/25/2023]
Abstract
Reversible protein ubiquitination represents an essential determinator of cellular homeostasis, and the ubiquitin-specific enzymes, particularly deubiquitinases (DUBs), are emerging as promising targets for drug development. DUBs are composed of seven different subfamilies, out of which ubiquitin-specific proteases (USPs) are the largest family with 56 members. One of the well-characterized USPs is USP1, which contributes to several cellular biological processes including DNA damage response, immune regulation, cell proliferation, apoptosis, and migration. USP1 levels and activity are regulated by multiple mechanisms, including transcription regulation, phosphorylation, autocleavage, and proteasomal degradation, ensuring that the cellular function of USP1 is performed in a suitably modulated spatio-temporal manner. Moreover, USP1 with deregulated expression and activity are found in several human cancers, indicating that targeting USP1 is a feasible therapeutic approach in anti-cancer treatment. In this review, we highlight the essential role of USP1 in cancer development and the regulatory landscape of USP1 activity, which might provide novel insights into cancer treatment.
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Affiliation(s)
- Peng Huang
- Department of Medical Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
- West China Biomedical Big Data Center, Sichuan University, Chengdu, 610041, Sichuan, China
| | - YuHan Wang
- Department of Anorectal, Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China
- School of Integrated Traditional Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - PengFei Zhang
- Department of Medical Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
- West China Biomedical Big Data Center, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Qiu Li
- Department of Medical Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China.
- West China Biomedical Big Data Center, Sichuan University, Chengdu, 610041, Sichuan, China.
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5
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Liu D, Li Q, Zang Y, Li X, Li Z, Zhang P, Feng C, Yang P, Cui J, Sun Y, Wei T, Su P, Zhao X, Yang H, Ding Y. USP1 modulates hepatocellular carcinoma progression via the Hippo/TAZ axis. Cell Death Dis 2023; 14:264. [PMID: 37041150 PMCID: PMC10090121 DOI: 10.1038/s41419-023-05777-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 03/21/2023] [Accepted: 03/24/2023] [Indexed: 04/13/2023]
Abstract
Hepatocellular carcinoma (HCC) is one of the most lethal malignancies worldwide. The Hippo signaling pathway has emerged as a significant suppressive pathway for hepatocellular carcinogenesis. The core components of the Hippo pathway constitute a kinase cascade, which inhibits the functional activation of YAP/TAZ. Interestingly, the overactivation of YAP/TAZ is commonly observed in hepatocellular carcinoma, although the inhibitory kinase cascade of the Hippo pathway is still functional. Recent studies have indicated that the ubiquitin‒proteasome system also plays important roles in modulating Hippo signaling activity. Our DUB (deubiquitinase) siRNA screen showed that USP1 is a critical regulator of Hippo signaling activity. Analysis of TCGA data demonstrated that USP1 expression is elevated in HCC and associated with poor survival in HCC patients. RNA sequencing analysis revealed that USP1 depletion affects Hippo signaling activity in HCC cell lines. Mechanistic assays revealed that USP1 is required for Hippo/TAZ axis activity and HCC progression. USP1 interacted with the WW domain of TAZ, which subsequently enhanced TAZ stability by suppressing K11-linked polyubiquitination of TAZ. Our study identifies a novel mechanism linking USP1 and TAZ in regulating the Hippo pathway and one possible therapeutic target for HCC.
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Affiliation(s)
- Dongyi Liu
- Department of General Surgery, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, P. R. China
- Department of Anaesthesiology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, P. R. China
| | - Quanhui Li
- Department of General Surgery, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, P. R. China
| | - Yifeng Zang
- Department of General Surgery, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, P. R. China
| | - Xin Li
- Xinxiang Key Laboratory of Tumor Migration and Invasion Precision Medicine, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, 453003, Henan Province, P. R. China
| | - Zhongbo Li
- Xinxiang Key Laboratory of Tumor Migration and Invasion Precision Medicine, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, 453003, Henan Province, P. R. China
| | - Peng Zhang
- Department of General Surgery, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, P. R. China
| | - Chang Feng
- Department of Anaesthesiology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, P. R. China
| | - Penghe Yang
- Xinxiang Key Laboratory of Tumor Migration and Invasion Precision Medicine, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, 453003, Henan Province, P. R. China
| | - Jiayao Cui
- Xinxiang Key Laboratory of Tumor Migration and Invasion Precision Medicine, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, 453003, Henan Province, P. R. China
| | - Yanan Sun
- Department of General Surgery, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, P. R. China
| | - Tian Wei
- Department of General Surgery, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, P. R. China
| | - Peng Su
- Department of Pathology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, P. R. China.
| | - Xin Zhao
- Department of Anaesthesiology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, P. R. China.
| | - Huijie Yang
- Xinxiang Key Laboratory of Tumor Migration and Invasion Precision Medicine, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, 453003, Henan Province, P. R. China.
| | - Yinlu Ding
- Department of General Surgery, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, P. R. China.
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6
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Li XY, Wu JC, Liu P, Li ZJ, Wang Y, Chen BY, Hu CL, Fei MY, Yu PC, Jiang YL, Xu CH, Chang BH, Chen XC, Zong LJ, Zhang JY, Fang Y, Sun XJ, Xue K, Wang L, Chen SB, Jiang SY, Gui AL, Yang L, Gu JJ, Yu BH, Zhang QL, Wang L. Inhibition of USP1 reverses the chemotherapy resistance through destabilization of MAX in the relapsed/refractory B-cell lymphoma. Leukemia 2023; 37:164-177. [PMID: 36352191 PMCID: PMC9883169 DOI: 10.1038/s41375-022-01747-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 10/19/2022] [Accepted: 10/26/2022] [Indexed: 11/10/2022]
Abstract
The patients with relapsed and refractory diffuse large B-cell lymphoma (DLBCL) have poor prognosis, and a novel and effective therapeutic strategy for these patients is urgently needed. Although ubiquitin-specific protease 1 (USP1) plays a key role in cancer, the carcinogenic effect of USP1 in B-cell lymphoma remains elusive. Here we found that USP1 is highly expressed in DLBCL patients, and high expression of USP1 predicts poor prognosis. Knocking down USP1 or a specific inhibitor of USP1, pimozide, induced cell growth inhibition, cell cycle arrest and autophagy in DLBCL cells. Targeting USP1 by shRNA or pimozide significantly reduced tumor burden of a mouse model established with engraftment of rituximab/chemotherapy resistant DLBCL cells. Pimozide significantly retarded the growth of lymphoma in a DLBCL patient-derived xenograft (PDX) model. USP1 directly interacted with MAX, a MYC binding protein, and maintained the stability of MAX through deubiquitination, which promoted the transcription of MYC target genes. Moreover, pimozide showed a synergetic effect with etoposide, a chemotherapy drug, in cell and mouse models of rituximab/chemotherapy resistant DLBCL. Our study highlights the critical role of USP1 in the rituximab/chemotherapy resistance of DLBCL through deubiquitylating MAX, and provides a novel therapeutic strategy for rituximab/chemotherapy resistant DLBCL.
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Affiliation(s)
- Xi-Ya Li
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Shanghai Jiao Tong University School of Medicine (SJTUSM) & Chinese Academy of Sciences, Shanghai, China
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ji-Chuan Wu
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Shanghai Jiao Tong University School of Medicine (SJTUSM) & Chinese Academy of Sciences, Shanghai, China
| | - Ping Liu
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Shanghai Jiao Tong University School of Medicine (SJTUSM) & Chinese Academy of Sciences, Shanghai, China
| | - Zi-Juan Li
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Shanghai Jiao Tong University School of Medicine (SJTUSM) & Chinese Academy of Sciences, Shanghai, China
| | - Yong Wang
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Shanghai Jiao Tong University School of Medicine (SJTUSM) & Chinese Academy of Sciences, Shanghai, China
| | - Bing-Yi Chen
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Shanghai Jiao Tong University School of Medicine (SJTUSM) & Chinese Academy of Sciences, Shanghai, China
| | - Cheng-Long Hu
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Shanghai Jiao Tong University School of Medicine (SJTUSM) & Chinese Academy of Sciences, Shanghai, China
| | - Ming-Yue Fei
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Shanghai Jiao Tong University School of Medicine (SJTUSM) & Chinese Academy of Sciences, Shanghai, China
| | - Peng-Cheng Yu
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Shanghai Jiao Tong University School of Medicine (SJTUSM) & Chinese Academy of Sciences, Shanghai, China
| | - Yi-Lun Jiang
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Shanghai Jiao Tong University School of Medicine (SJTUSM) & Chinese Academy of Sciences, Shanghai, China
| | - Chun-Hui Xu
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Shanghai Jiao Tong University School of Medicine (SJTUSM) & Chinese Academy of Sciences, Shanghai, China
| | - Bin-He Chang
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Shanghai Jiao Tong University School of Medicine (SJTUSM) & Chinese Academy of Sciences, Shanghai, China
| | - Xin-Chi Chen
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Shanghai Jiao Tong University School of Medicine (SJTUSM) & Chinese Academy of Sciences, Shanghai, China
| | - Li-Juan Zong
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Shanghai Jiao Tong University School of Medicine (SJTUSM) & Chinese Academy of Sciences, Shanghai, China
| | - Jia-Ying Zhang
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Shanghai Jiao Tong University School of Medicine (SJTUSM) & Chinese Academy of Sciences, Shanghai, China
| | - Ying Fang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao-Jian Sun
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kai Xue
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Li Wang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shu-Bei Chen
- Shanghai Jiao Tong University School of Life Sciences and Biotechnology, Shanghai, China
| | - Shi-Yu Jiang
- Department of lymphoma, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Ai-Ling Gui
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Ling Yang
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Juan J Gu
- Department of Medicine & Immunology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Bao-Hua Yu
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Qun-Ling Zhang
- Department of lymphoma, Fudan University Shanghai Cancer Center, Shanghai, China.
| | - Lan Wang
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Shanghai Jiao Tong University School of Medicine (SJTUSM) & Chinese Academy of Sciences, Shanghai, China.
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Woo SM, Kim S, Seo SU, Kim S, Park JW, Kim G, Choi YR, Hur K, Kwon TK. Inhibition of USP1 enhances anticancer drugs-induced cancer cell death through downregulation of survivin and miR-216a-5p-mediated upregulation of DR5. Cell Death Dis 2022; 13:821. [PMID: 36153316 PMCID: PMC9509337 DOI: 10.1038/s41419-022-05271-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 09/12/2022] [Accepted: 09/14/2022] [Indexed: 01/23/2023]
Abstract
Ubiquitin-specific protease 1 (USP1) is a deubiquitinase involved in DNA damage repair by modulating the ubiquitination of major regulators, such as PCNA and FANCD2. Because USP1 is highly expressed in many cancers, dysregulation of USP1 contributes to cancer therapy. However, the role of USP1 and the mechanisms underlying chemotherapy remain unclear. In this study, we found high USP1 expression in tumor tissues and that it correlated with poor prognosis in RCC. Mechanistically, USP1 enhanced survivin stabilization by removing ubiquitin. Pharmacological inhibitors (ML23 and pimozide) and siRNA targeting USP1 induced downregulation of survivin expression. In addition, ML323 upregulated DR5 expression by decreasing miR-216a-5p expression at the post-transcriptional level, and miR-216a-5p mimics suppressed the upregulation of DR5 by ML323. Inhibition of USP1 sensitized cancer cells. Overexpression of survivin or knockdown of DR5 markedly prevented the co-treatment with ML323 and TRAIL-induced apoptosis. These results of in vitro were proved in a mouse xenograft model, in which combined treatment significantly reduced tumor size and induced survivin downregulation and DR5 upregulation. Furthermore, USP1 and survivin protein expression showed a positive correlation, whereas miR-216a-5p and DR5 were inversely correlated in RCC tumor tissues. Taken together, our results suggest two target substrates of USP1 and demonstrate the involvement of survivin and DR5 in USP1-targeted chemotherapy.
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Affiliation(s)
- Seon Min Woo
- grid.412091.f0000 0001 0669 3109Department of Immunology, School of Medicine, Keimyung University, Daegu, 42601 South Korea
| | - Seok Kim
- grid.412091.f0000 0001 0669 3109Department of Immunology, School of Medicine, Keimyung University, Daegu, 42601 South Korea
| | - Seung Un Seo
- grid.412091.f0000 0001 0669 3109Department of Immunology, School of Medicine, Keimyung University, Daegu, 42601 South Korea
| | - Shin Kim
- grid.412091.f0000 0001 0669 3109Department of Immunology, School of Medicine, Keimyung University, Daegu, 42601 South Korea
| | - Jong-Wook Park
- grid.412091.f0000 0001 0669 3109Department of Immunology, School of Medicine, Keimyung University, Daegu, 42601 South Korea
| | - Gyeonghwa Kim
- grid.258803.40000 0001 0661 1556Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Daegu, 41944 South Korea
| | - Yu-Ra Choi
- grid.258803.40000 0001 0661 1556Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Daegu, 41944 South Korea
| | - Keun Hur
- grid.258803.40000 0001 0661 1556Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Daegu, 41944 South Korea
| | - Taeg Kyu Kwon
- grid.412091.f0000 0001 0669 3109Department of Immunology, School of Medicine, Keimyung University, Daegu, 42601 South Korea ,grid.412091.f0000 0001 0669 3109Center for Forensic Pharmaceutical Science, Keimyung University, Daegu, 42601 South Korea
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8
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Zhao J, Guo J, Wang Y, Ma Q, Shi Y, Cheng F, Lu Q, Fu W, Ouyang G, Zhang J, Xu Q, Hu X. Research Progress of DUB Enzyme in Hepatocellular Carcinoma. Front Oncol 2022; 12:920287. [PMID: 35875077 PMCID: PMC9303014 DOI: 10.3389/fonc.2022.920287] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 05/24/2022] [Indexed: 11/13/2022] Open
Abstract
According to GLOBOCAN 2021 cancer incidence and mortality statistics compiled by the International Agency for Research on Cancer, hepatocellular carcinoma (HCC) is the most common malignancy in the human liver and one of the leading causes of cancer death worldwide. Although there have been great advances in the treatment of HCC, such as regofenib, sorafenib, and lomvatinib, which have been developed and approved for the clinical treatment of advanced or metastatic HCC. However, they only prolong survival by a few months, and patients with advanced liver cancer are susceptible to tumor invasion metastasis and drug resistance. Ubiquitination modification is a type of post-translational modification of proteins. It can affect the physiological activity of cells by regulating the localization, stability and activity of proteins, such as: gene transcription, DNA damage signaling and other pathways. The reversible process of ubiquitination is called de-ubiquitination: it is the process of re-releasing ubiquitinated substrates with the participation of de-ubiquitinases (DUBs) and other active substances. There is growing evidence that many dysregulations of DUBs are associated with tumorigenesis. Although dysregulation of deuquitinase function is often found in HCC and other cancers, The mechanisms of action of many DUBs in HCC have not been elucidated. In this review, we focused on several deubiquitinases (DUBs) associated with hepatocellular carcinoma, including their structure, function, and relationship to hepatocellular carcinoma. hepatocellular carcinoma was highlighted, as well as the latest research reports. Among them, we focus on the USP family and OTU family which are more studied in the HCC. In addition, we discussed the prospects and significance of targeting DUBs as a new strategy for the treatment of hepatocellular carcinoma. It also briefly summarizes the research progress of some DUB-related small molecule inhibitors and their clinical application significance as a treatment for HCC in the future.
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Affiliation(s)
- Jie Zhao
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
- Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, China
| | - Jinhui Guo
- Qingdao Medical College, Qingdao University, Qingdao, China
| | - Yanan Wang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Qiancheng Ma
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Yu Shi
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Feng Cheng
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Qiliang Lu
- Qingdao Medical College, Qingdao University, Qingdao, China
| | - Wen Fu
- Qingdao Medical College, Qingdao University, Qingdao, China
| | | | - Ji Zhang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Qiuran Xu
- Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, China
- *Correspondence: Xiaoge Hu, ; Qiuran Xu,
| | - Xiaoge Hu
- Department of Hepatobiliary and Pancreatic Surgery, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical CollegeHangzhou, China
- The Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, China
- *Correspondence: Xiaoge Hu, ; Qiuran Xu,
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9
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USP1 Promotes GC Metastasis via Stabilizing ID2. DISEASE MARKERS 2021; 2021:3771990. [PMID: 34873426 PMCID: PMC8643267 DOI: 10.1155/2021/3771990] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 09/03/2021] [Indexed: 12/02/2022]
Abstract
Gastric cancer (GC) is one of the most common malignant tumors all over the world. And recurrence and metastasis are still the main causes of low survival rate for advanced GC. USP1 has been shown overexpressed in multiple cancers, which indicate its important biomarker in tumorigenesis and development. Our study is aimed at defining the exact role of USP1 on GC metastasis and the underlying mechanism. USP1 was firstly found overexpressed in GC tissues and relatively high-expression levels conferred poor survival rates. Then, real-time cellular analysis (RTCA) showed that USP1 knockdown inhibited GC metastasis both in vitro and in vivo. Mechanically, we demonstrated that USP1 promoted GC metastasis via upregulating ID2 expression and further confirmed that USP1 stabilized ID2 expression through deubiquitinating ID2 in GC. In conclusion, our study showed that USP1 promoted GC metastasis via stabilizing ID2 expression, which provides a potential biomarker and therapy target for GC.
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10
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Han L, Guo T, Liu DL, Tan YY. Progress in research of deubiquitination enzymes in colorectal cancer. Shijie Huaren Xiaohua Zazhi 2021; 29:809-815. [DOI: 10.11569/wcjd.v29.i14.809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Dubiquitinating enzymes include six subfamilies, which are widely distributed in various cells of the body. They play an important role in many processes, such as regulating the degradation of protein, and are involved in cell growth and proliferation, immune regulation, nerve function, tumor development, and molecular signaling pathways. Colorectal cancer, as one of the five malignant tumors with the highest morbidity and mortality, is a serious threat to human health. More and more studies have reported that the deubiquitination enzyme family plays an important role in the occurrence and development of colorectal cancer. Here, we review the recent progress in the research of deubiquitination enzymes in colorectal cancer.
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Affiliation(s)
- Liu Han
- Department of Gastroenterology, Second Xiangya Hospital, Central South University, Changsha 410011, Hunan Province, China,Research Center of Digestive Diseases, Central South University, Changsha 410011, Hunan Province, China
| | - Ting Guo
- Department of Gastroenterology, Second Xiangya Hospital, Central South University, Changsha 410011, Hunan Province, China,Research Center of Digestive Diseases, Central South University, Changsha 410011, Hunan Province, China
| | - De-Liang Liu
- Department of Gastroenterology, Second Xiangya Hospital, Central South University, Changsha 410011, Hunan Province, China,Research Center of Digestive Diseases, Central South University, Changsha 410011, Hunan Province, China
| | - Yu-Yong Tan
- Department of Gastroenterology, Second Xiangya Hospital, Central South University, Changsha 410011, Hunan Province, China,Research Center of Digestive Diseases, Central South University, Changsha 410011, Hunan Province, China
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11
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Niu Z, Li X, Feng S, Huang Q, Zhuang T, Yan C, Qian H, Ding Y, Zhu J, Xu W. The deubiquitinating enzyme USP1 modulates ERα and modulates breast cancer progression. J Cancer 2020; 11:6992-7000. [PMID: 33123289 PMCID: PMC7591989 DOI: 10.7150/jca.50477] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 09/27/2020] [Indexed: 12/27/2022] Open
Abstract
Breast cancer is one of the most common malignancies worldwide, while the luminal types (ERα positive) accounts for two third of all breast cancer cases. Although ERα positive breast cancer could be effective controlled by endocrine therapy, most of the patients will develop endocrine resistance, which becomes a headache clinical issue for breast cancer field. Endocrine resistance could be caused by multiple pathway disorders, the dys-regulation of ERα signaling might be a critical factor, which makes it urgent and important to reveal the potential molecular mechanism of ERα signaling. In our current study, we identified a new deubiquitination enzyme USP1 through screening the whole DUB (Deubiquitinases) siRNA library. The expression of USP1 is elevated in human breast cancer compared with normal mammary tissues. Importantly, USP1 expression levels are specially correlated with poor survival in ERα positive patients. USP1 depletion inhibited breast cancer cell progression and ERα signaling activity. Immuno-precipitation assays indicate that USP1 associates with ERα and promotes its stability possibly via inhibiting ERα K48-linked poly-ubiquitination. In conclusion, our data implicate a non-genomic mechanism by USP1 via stabilizing ERα protein controls ERα target gene expression linked to breast cancer progression.
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Affiliation(s)
- Zhiguo Niu
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, 212000, China.,Henan Key Laboratory of Immunology and Targeted Drugs, School of Laboratory Medicine, Xinxiang Medical University, 453000, China
| | - Xin Li
- Henan Key Laboratory of Immunology and Targeted Drugs, School of Laboratory Medicine, Xinxiang Medical University, 453000, China
| | - Suyin Feng
- Department of Neurosurgery, Affiliated Hospital of Jiangnan University, 200 Huihe Road, Wuxi, 214000, Jiangsu, China
| | - Qingsong Huang
- Henan Key Laboratory of Immunology and Targeted Drugs, School of Laboratory Medicine, Xinxiang Medical University, 453000, China
| | - Ting Zhuang
- Henan Key Laboratory of Immunology and Targeted Drugs, School of Laboratory Medicine, Xinxiang Medical University, 453000, China
| | - Cheng Yan
- School of Medicine, Xinxiang University, Xinxiang, 453003 Henan P.R. China
| | - Hui Qian
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Yinlu Ding
- Department of general surgery, the Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China, 250033
| | - Jian Zhu
- Department of general surgery, the Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China, 250033.,Henan Key Laboratory of Immunology and Targeted Drugs, School of Laboratory Medicine, Xinxiang Medical University, 453000, China
| | - Wenrong Xu
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, 212000, China
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12
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Xu X, Li S, Cui X, Han K, Wang J, Hou X, Cui L, He S, Xiao J, Yang Y. Inhibition of Ubiquitin Specific Protease 1 Sensitizes Colorectal Cancer Cells to DNA-Damaging Chemotherapeutics. Front Oncol 2019; 9:1406. [PMID: 31921663 PMCID: PMC6930197 DOI: 10.3389/fonc.2019.01406] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Accepted: 11/27/2019] [Indexed: 12/31/2022] Open
Abstract
Mutations and altered expression of deubiquitinating enzymes (DUBs) have been found associated with many human diseases including cancers. In this study, Ubiquitin specific protease 1 (USP1) expression was found significantly increased in some colorectal cancers (CRC). The elevated USP1 level was associated with short overall survival of patients and with advanced stages of cancers. In cultured CRC cells, knockdown of USP1 induced growth arrest at G2/M of cell cycle and reduced the expression of anti-apoptotic proteins Bcl-2 and Mcl-1. Its knockdown also led to reduction of DNA-repair related substrates FANCD2 and ID1. Further investigations found that small molecular inhibitor of USP1 ML323 sensitized CRC cells to DNA-targeting chemotherapeutics, including doxorubicin, TOPI/II inhibitors, and PARP inhibitor, but not to 5-Fu. These results indicate that USP1 plays a critical in colorectal cancer cell survival and is a promising target for anti-colorectal cancer chemotherapy. Targeting USP1 may represent an effective strategy to regulate the DNA-repairing system.
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Affiliation(s)
- Xin Xu
- Center for Systems Medicine, Suzhou Institute of Systems Medicine, Chinese Academy of Medical Sciences, Suzhou, China
| | - Shaoyan Li
- Center for Systems Medicine, Suzhou Institute of Systems Medicine, Chinese Academy of Medical Sciences, Suzhou, China.,School of Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Ximao Cui
- Department of Colorectal Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Shanghai Colorectal Cancer Research Center, Shanghai, China
| | - Kunkun Han
- The Asclepius Technology Company Group and Asclepius Cancer Research Center, Suzhou, China
| | - Jun Wang
- The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xiaodan Hou
- Center for Systems Medicine, Suzhou Institute of Systems Medicine, Chinese Academy of Medical Sciences, Suzhou, China
| | - Long Cui
- Department of Colorectal Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Shanghai Colorectal Cancer Research Center, Shanghai, China
| | - Songbing He
- The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jiecheng Xiao
- The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yili Yang
- Center for Systems Medicine, Suzhou Institute of Systems Medicine, Chinese Academy of Medical Sciences, Suzhou, China.,State Key Laboratory of Innovative Natural Medicine and TCM Injections, Qingfeng Pharmaceutical, Ganzhou, China
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13
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USP1 inhibition destabilizes KPNA2 and suppresses breast cancer metastasis. Oncogene 2018; 38:2405-2419. [DOI: 10.1038/s41388-018-0590-8] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 10/18/2018] [Accepted: 11/13/2018] [Indexed: 02/06/2023]
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14
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Liu J, Zhu H, Zhong N, Jiang Z, Xu L, Deng Y, Jiang Z, Wang H, Wang J. Gene silencing of USP1 by lentivirus effectively inhibits proliferation and invasion of human osteosarcoma cells. Int J Oncol 2016; 49:2549-2557. [PMID: 27840911 DOI: 10.3892/ijo.2016.3752] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 10/20/2016] [Indexed: 11/06/2022] Open
Abstract
Osteosarcoma is the most frequent malignant bone tumor, affecting the extremities of adolescents and young adults. Ubiquitin-specific protease 1 (USP1) plays a critical role in many cellular processes including proteasome degradation, chromatin remodeling and cell cycle regulation. In the present study, we discovered that USP1 was overexpressed in 26 out of 30 osteosarcoma tissues compared to cartilage tumor tissues and normal bone tissues. We then constructed a lentiviral vector mediating RNA interference (RNAi) targeting USP1 and demonstrated that it significantly suppressed the mRNA and protein expression of the USP1 gene in U2OS cells. Knockdown of USP1 inhibited the growth and colony-forming, as well as significantly reduced the invasiveness of U2OS cells. Western blot analysis indicated that suppression of USP1 downregulated the expression of many proteins including SIK2, MMP-2, GSK-3β, Bcl-2, Stat3, cyclin E1, Notch1, Wnt-1 and cyclin A1. Most of these proteins are associated with tumor genesis and development. RNAi of SIK2 significantly decreased SIK2 protein expression and inhibited the ability of forming colonies, as well as induced apoptosis and reduced the invasiveness of U2OS cells. Collectively, our results suggest that silencing USP1 inhibits cell proliferation and invasion in U2OS cells. Therefore, USP1 may provide a novel therapeutic target for the treatment of osteosarcoma.
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Affiliation(s)
- Jinbo Liu
- Department of Orthopaedics, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213003, P.R. China
| | - Hongjun Zhu
- Department of Thoracic Surgery, The First People's Hospital of Shangqiu, Shangqiu, Henan 476100, P.R. China
| | - Ning Zhong
- Department of Thoracic Surgery, Kunshan First People's Hospital Affiliated to Jiangsu University, Kunshan, Jiangsu 215000, P.R. China
| | - Zifeng Jiang
- Clinical Laboratories, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Lele Xu
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215200, P.R. China
| | - Youping Deng
- Department of Medicine, Rush University Medical Center, Chicago, IL 60612, USA
| | - Zhenhuan Jiang
- Department of Orthopaedics, People's Hospital of Yixing City, Yixing, Jiangsu 214200, P.R. China
| | - Hongwei Wang
- Department of Medicine, University of Chicago, Chicago, IL 60637, USA
| | - Jinzhi Wang
- Department of Cell Biology, School of Medicine, Soochow University, Suzhou, Jiangsu 215007, P.R. China
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15
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Kim M, Kim JM. The role of USP1 autocleavage in DNA interstrand crosslink repair. FEBS Lett 2016; 590:340-8. [DOI: 10.1002/1873-3468.12060] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 12/22/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Mira Kim
- Department of Pharmacology; Medical Research Center for Gene Regulation; Chonnam National University Medical School; Gwangju Korea
| | - Jung Min Kim
- Department of Pharmacology; Medical Research Center for Gene Regulation; Chonnam National University Medical School; Gwangju Korea
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16
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García-Santisteban I, Peters GJ, Giovannetti E, Rodríguez JA. USP1 deubiquitinase: cellular functions, regulatory mechanisms and emerging potential as target in cancer therapy. Mol Cancer 2013; 12:91. [PMID: 23937906 PMCID: PMC3750636 DOI: 10.1186/1476-4598-12-91] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Accepted: 07/30/2013] [Indexed: 01/12/2023] Open
Abstract
Reversible protein ubiquitination is emerging as a key process for maintaining cell homeostasis, and the enzymes that participate in this process, in particular E3 ubiquitin ligases and deubiquitinases (DUBs), are increasingly being regarded as candidates for drug discovery. Human DUBs are a group of approximately 100 proteins, whose cellular functions and regulatory mechanisms remain, with some exceptions, poorly characterized. One of the best-characterized human DUBs is ubiquitin-specific protease 1 (USP1), which plays an important role in the cellular response to DNA damage. USP1 levels, localization and activity are modulated through several mechanisms, including protein-protein interactions, autocleavage/degradation and phosphorylation, ensuring that USP1 function is carried out in a properly regulated spatio-temporal manner. Importantly, USP1 expression is deregulated in certain types of human cancer, suggesting that USP1 could represent a valid target in cancer therapy. This view has gained recent support with the finding that USP1 inhibition may contribute to revert cisplatin resistance in an in vitro model of non-small cell lung cancer (NSCLC). Here, we describe the current knowledge on the cellular functions and regulatory mechanisms of USP1. We also summarize USP1 alterations found in cancer, combining data from the literature and public databases with our own data. Finally, we discuss the emerging potential of USP1 as a target, integrating published data with our novel findings on the effects of the USP1 inhibitor pimozide in combination with cisplatin in NSCLC cells.
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Affiliation(s)
- Iraia García-Santisteban
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country UPV/EHU, Leioa, Spain
| | - Godefridus J Peters
- Department of Medical Oncology, VU University Medical Center, Amsterdam, The Netherlands
| | - Elisa Giovannetti
- Department of Medical Oncology, VU University Medical Center, Amsterdam, The Netherlands
| | - Jose Antonio Rodríguez
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country UPV/EHU, Leioa, Spain
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17
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Yang W, Qi Y, Bi K, Fu J. Toward understanding the genetic basis of adaptation to high-elevation life in poikilothermic species: a comparative transcriptomic analysis of two ranid frogs, Rana chensinensis and R. kukunoris. BMC Genomics 2012; 13:588. [PMID: 23116153 PMCID: PMC3542248 DOI: 10.1186/1471-2164-13-588] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Accepted: 10/30/2012] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Understanding how organisms adapt to high-elevation environments at a genome scale provides novel insights into the process of adaptive evolution. Previous studies have mainly focused on endothermic organisms, while poikilothermic species may have evolved different mechanisms to cope with high-elevation environments. In this context, we sequenced transcriptomes of a pair of closely related anuran species, Rana chensinensis and R. kukunoris, which inhabit respective low- and high-elevation habitats. By comparing the two transcriptomes, we identified candidate genes that may be involved in high-elevation adaption in poikilothermic species. RESULTS Over 66 million sequence reads from each transcriptome were generated. A total of 41,858 and 39,293 transcripts for each species were obtained by de novo assembly. By comparing the orthologous transcripts, we identified 125 protein-coding genes that have likely experienced strong positive selection (Ka/Ks>1). In addition, 335 genes that may bear a signature of positive selection (1≥Ka/Ks>0.5) were also recognized. By considering their functions, fourteen candidate genes were determined to be likely involved in high-elevation adaptation, including two CYP genes, USP-1, and several others. CONCLUSIONS We identified a set of candidate genes that may have promoted adaptation of R. kukunoris to its high-elevation environment. These include several genes that have previously been associated with oxygen binding, response to UV radiation, and repair of free radical injury. Detailed molecular, physiological, and phenotypic studies are required to better understand the roles of these genes in improving the performance of R. kukunoris in a high-elevation environment. We have evidence for both convergent and divergent evolution between endothermic and poikilothemic species, but additional research across a wide range of organisms will be necessary to comprehend the complexity of high-elevation adaptation.
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Affiliation(s)
- Weizhao Yang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
- Graduate University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yin Qi
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
| | - Ke Bi
- Museum of Vertebrate Zoology, University of California, Berkeley, CA, 94720-3160, USA
| | - Jinzhong Fu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
- Department of Integrative Biology, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
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18
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Wu B, Liu S, Cheng S, Zhang Y, Zhang X. Hepatic gene expression analysis of mice exposed to raw water from Meiliang Bay, Lake Taihu, China. J Appl Toxicol 2012; 33:1416-23. [PMID: 22899542 DOI: 10.1002/jat.2805] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Revised: 06/27/2012] [Accepted: 06/27/2012] [Indexed: 11/06/2022]
Abstract
Lake water is a micro-polluted water system, and characterization of its toxicity remains difficult. Microarray-based determination of altered gene expression might be an alterative approach. We chose raw water from Meiliang Bay, Lake Taihu, China as the target water. Male mice were exposed to the lake water for 90 days. Total hepatic RNA was applied to interrogate the Affymetrix Mouse Genome 430A 2.0 array. Gene ontology analysis, pathway analysis and gene network analysis were used to identify biological effects of differently expressed genes. The results showed that the expressions of 170 genes were altered. Nine biological processes and nine biological pathways were significantly perturbed (P ≤ 0.01), mainly linked to the regulation of cell processes, DNA repair, chromatin modification, oxidative reduction and carbohydrate metabolism. Important genes, such as Prkca, Pik3r1, Fgfr1 and Zbtb16, were identified by gene network analysis. This study provided excellent insights into early toxicological effects related to raw Lake Taihu water, and illustrated that the toxicogenomic approach might be a useful tool to evaluate potential environmental health effects of raw lake water.
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Affiliation(s)
- Bing Wu
- State Key Laboratory of Pollutant Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210046, People's Republic of China
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19
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Reyes-Turcu FE, Ventii KH, Wilkinson KD. Regulation and cellular roles of ubiquitin-specific deubiquitinating enzymes. Annu Rev Biochem 2009; 78:363-97. [PMID: 19489724 DOI: 10.1146/annurev.biochem.78.082307.091526] [Citation(s) in RCA: 1082] [Impact Index Per Article: 72.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Deubiquitinating enzymes (DUBs) are proteases that process ubiquitin or ubiquitin-like gene products, reverse the modification of proteins by a single ubiquitin(-like) protein, and remodel polyubiquitin(-like) chains on target proteins. The human genome encodes nearly 100 DUBs with specificity for ubiquitin in five gene families. Most DUB activity is cryptic, and conformational rearrangements often occur during the binding of ubiquitin and/or scaffold proteins. DUBs with specificity for ubiquitin contain insertions and extensions modulating DUB substrate specificity, protein-protein interactions, and cellular localization. Binding partners and multiprotein complexes with which DUBs associate modulate DUB activity and substrate specificity. Quantitative studies of activity and protein-protein interactions, together with genetic studies and the advent of RNAi, have led to new insights into the function of yeast and human DUBs. This review discusses ubiquitin-specific DUBs, some of the generalizations emerging from recent studies of the regulation of DUB activity, and their roles in various cellular processes.
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Affiliation(s)
- Francisca E Reyes-Turcu
- Laboratory of Biochemistry and Molecular Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
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20
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Abstract
Fanconi anemia (FA) is an autosomal and X-linked recessive disorder characterized by bone marrow failure, acute myelogenous leukemia, solid tumors, and developmental abnormalities. Recent years have seen a dramatic improvement in FA patient treatment, resulting in a greater survival of children into adulthood. These improvements have been made despite the fact that a definitive cellular function for the proteins in the FA pathway has yet to be elucidated. Delineating the cellular functions of the FA pathway could help further improve the treatment options for FA patients and further reduce the probability of succumbing to the disease. This article reviews the current clinical aspects of FA including presentation, diagnosis, and treatment followed by a review of the molecular aspects of FA as they are currently understood.
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Affiliation(s)
- Allison M Green
- Section of Pediatric Hematology-Oncology, Department of Pathology, Yale University School of Medicine, 333 Cedar Street LMP 2073, PO Box 208064, New Haven, CT 06520-8064, USA
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21
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Treeck O, Lattrich C, Juhasz-Boess I, Buchholz S, Pfeiler G, Ortmann O. Adiponectin differentially affects gene expression in human mammary epithelial and breast cancer cells. Br J Cancer 2008; 99:1246-50. [PMID: 18827813 PMCID: PMC2570517 DOI: 10.1038/sj.bjc.6604692] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Serum levels of adiponectin are inversely associated with breast cancer risk. In this study, its effect on growth and gene expression of MCF-7 breast cancer cells and MCF-10A human mammary epithelial cells was compared. The antiproliferative effect of adiponectin on MCF-10A cells was more pronounced and was accompanied by elevated transcript levels of caspase 1, ERbeta2, ERbeta5, TR2 and USP2. Our data suggest that upregulation of genes with known growth inhibitory or apoptotic functions in mammary epithelial cells might contribute to the protective action of this adipocytokine.
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Affiliation(s)
- O Treeck
- Department of Obstetrics and Gynecology, University of Regensburg, Landshuter Strasse 65, Regensburg 93053, Germany.
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22
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Abstract
Protein modification by ubiquitin and ubiquitin-like molecules is a critical regulatory process. Like most regulated protein modifications, ubiquitination is reversible. Deubiquitination, the reversal of ubiquitination, is quickly being recognized as an important regulatory strategy. Nearly one hundred human DUBs (deubiquitinating enzymes) in five different gene families oppose the action of several hundred ubiquitin ligases, suggesting that both ubiquitination and its reversal are highly regulated and specific processes. It has long been recognized that ubiquitin ligases are modular enzyme systems that often depend on scaffolds and adaptors to deliver substrates to the catalytically active macromolecular complex. Although many DUBs bind ubiquitin with reasonable affinities (in the nM to microM range), a larger number have little affinity but exhibit robust catalytic capability. Thus it is apparent that these DUBs must acquire their substrates by binding the target protein in a conjugate or by associating with other macromolecular complexes. We would then expect that a study of protein partners of DUBs would reveal a variety of substrates, scaffolds, adaptors and ubiquitin receptors. In the present review we suggest that, like ligases, much of the regulation and specificity of deubiquitination arises from the association of DUBs with these protein partners.
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Zeng M, Sun H, Chen S, Wang X, Yang Y, Liu Y, Tao D, Yang Z, Zhang S, Ma Y. Identification of target messenger RNA substrates for mouse RBMY. Mol Hum Reprod 2008; 14:331-6. [PMID: 18492746 DOI: 10.1093/molehr/gan024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Rbmy gene encodes a RNA-binding protein and its expression is limited to the nuclei of germ cells. Previous studies indicate that RBMY may function in pre-mRNA processing during spermatogenesis, although its precise target mRNAs remain unclear. By using specific nucleic acids associated with proteins and immunoprecipitation techniques, we have identified 12 potential target mRNAs bound by mouse RBMY protein from testis. We detect that both mRbmy-1 and mRbmy-2 transcripts co-exist in mouse testis and they differ mainly in the 5'UTR. Importantly, our result shows that mRBMY protein can bind to one of its own transcripts, mRbmy-2, suggesting that mRBMY may affect alternative splicing or regulate the expression of its own gene. Using electrophoretic mobility shift assay, we demonstrated that mRBMY protein can bind to the testis and sperm-specific spa17 mRNA and that the binding domain contains rich oligo(A), suggesting that mRBMY protein may have high affinity to oligo(A) rich sequences. In conclusion, the identification of RBMY target mRNAs will be helpful to further explore the biological function of RBMY in spermatogenesis.
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Affiliation(s)
- Mei Zeng
- Department of Medical Genetics, West China Hospital, Sichuan University, Renmin Nanlu, Section 3 #17, Chengdu 610041, PR China
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24
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Cohn MA, Kowal P, Yang K, Haas W, Huang TT, Gygi SP, D'Andrea AD. A UAF1-containing multisubunit protein complex regulates the Fanconi anemia pathway. Mol Cell 2008; 28:786-97. [PMID: 18082604 DOI: 10.1016/j.molcel.2007.09.031] [Citation(s) in RCA: 261] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2007] [Revised: 06/13/2007] [Accepted: 09/22/2007] [Indexed: 11/26/2022]
Abstract
The deubiquitinating enzyme USP1 controls the cellular levels of the DNA damage response protein Ub-FANCD2, a key protein of the Fanconi anemia DNA repair pathway. Here we report the purification of a USP1 multisubunit protein complex from HeLa cells containing stoichiometric amounts of a WD40 repeat-containing protein, USP1 associated factor 1 (UAF1). In vitro reconstitution of USP1 deubiquitinating enzyme activity, using either ubiquitin-7-amido-4-methylcoumarin (Ub-AMC) or purified monoubiquitinated FANCD2 protein as substrates, demonstrates that UAF1 functions as an activator of USP1. UAF1 binding increases the catalytic turnover (kcat) but does not increase the affinity of the USP1 enzyme for the substrate (KM). Moreover, we show that DNA damage results in an immediate shutoff of transcription of the USP1 gene, leading to a rapid decline in the USP1/UAF1 protein complex. Taken together, our results describe a mechanism of regulation of the deubiquitinating enzyme, USP1, and of DNA repair.
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Affiliation(s)
- Martin A Cohn
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA
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25
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Katritch V, Byrd CM, Tseitin V, Dai D, Raush E, Totrov M, Abagyan R, Jordan R, Hruby DE. Discovery of small molecule inhibitors of ubiquitin-like poxvirus proteinase I7L using homology modeling and covalent docking approaches. J Comput Aided Mol Des 2007; 21:549-58. [PMID: 17960327 PMCID: PMC7087885 DOI: 10.1007/s10822-007-9138-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2007] [Accepted: 09/30/2007] [Indexed: 11/20/2022]
Abstract
Essential for viral replication and highly conserved among poxviridae, the vaccinia virus I7L ubiquitin-like proteinase (ULP) is an attractive target for development of smallpox antiviral drugs. At the same time, the I7L proteinase exemplifies several interesting challenges from the rational drug design perspective. In the absence of a published I7L X-ray structure, we have built a detailed 3D model of the I7L ligand binding site (S2-S2' pocket) based on exceptionally high structural conservation of this site in proteases of the ULP family. The accuracy and limitations of this model were assessed through comparative analysis of available X-ray structures of ULPs, as well as energy based conformational modeling. The 3D model of the I7L ligand binding site was used to perform covalent docking and VLS of a comprehensive library of about 230,000 available ketone and aldehyde compounds. Out of 456 predicted ligands, 97 inhibitors of I7L proteinase activity were confirmed in biochemical assays ( approximately 20% overall hit rate). These experimental results both validate our I7L ligand binding model and provide initial leads for rational optimization of poxvirus I7L proteinase inhibitors. Thus, fragments predicted to bind in the prime portion of the active site can be combined with fragments on non-prime side to yield compounds with improved activity and specificity.
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Nijman SMB, Huang TT, Dirac AMG, Brummelkamp TR, Kerkhoven RM, D'Andrea AD, Bernards R. The deubiquitinating enzyme USP1 regulates the Fanconi anemia pathway. Mol Cell 2005; 17:331-9. [PMID: 15694335 DOI: 10.1016/j.molcel.2005.01.008] [Citation(s) in RCA: 428] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2004] [Revised: 11/29/2004] [Accepted: 01/06/2005] [Indexed: 11/24/2022]
Abstract
Protein ubiquitination and deubiquitination are dynamic processes implicated in the regulation of numerous cellular pathways. Monoubiquitination of the Fanconi anemia (FA) protein FANCD2 appears to be critical in the repair of DNA damage because many of the proteins that are mutated in FA are required for FANCD2 ubiquitination. By screening a gene family RNAi library, we identify the deubiquitinating enzyme USP1 as a novel component of the Fanconi anemia pathway. Inhibition of USP1 leads to hyperaccumulation of monoubiquitinated FANCD2. Furthermore, USP1 physically associates with FANCD2, and the proteins colocalize in chromatin after DNA damage. Finally, analysis of crosslinker-induced chromosomal aberrations in USP1 knockdown cells suggests a role in DNA repair. We propose that USP1 deubiquitinates FANCD2 when cells exit S phase or recommence cycling after a DNA damage insult and may play a critical role in the FA pathway by recycling FANCD2.
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Affiliation(s)
- Sebastian M B Nijman
- Division of Molecular Carcinogenesis and Center for Biomedical Genetics, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
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27
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Ideguchi H, Ueda A, Tanaka M, Yang J, Tsuji T, Ohno S, Hagiwara E, Aoki A, Ishigatsubo Y. Structural and functional characterization of the USP11 deubiquitinating enzyme, which interacts with the RanGTP-associated protein RanBPM. Biochem J 2002; 367:87-95. [PMID: 12084015 PMCID: PMC1222860 DOI: 10.1042/bj20011851] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2001] [Revised: 06/25/2002] [Accepted: 06/25/2002] [Indexed: 11/17/2022]
Abstract
RanBPM is a RanGTP-binding protein required for correct nucleation of microtubules. To characterize the mechanism, we searched for RanBPM-binding proteins by using a yeast two-hybrid method and isolated a cDNA encoding the ubiquitin-specific protease USP11. The full-length cDNA of USP11 was cloned from a Jurkat cell library. Sequencing revealed that USP11 possesses Cys box, His box, Asp and KRF domains, which are highly conserved in many ubiquitin-specific proteases. By immunoblotting using HeLa cells, we concluded that 921-residue version of USP11 was the predominant form, and USP11 may be a ubiquitous protein in various human tissues. By immunofluorescence assay, USP11 primarily was localized in the nucleus of non-dividing cells, suggesting an association between USP11 and RanBPM in the nucleus. Furthermore, the association between USP11 and RanBPM in vivo was confirmed not only by yeast two-hybrid assay but also by co-immunoprecipitation assays using exogenously expressed USP11 and RanBPM. We next revealed proteasome-dependent degradation of RanBPM by pulse-chase analysis using proteasome inhibitors. In fact, ubiquitinated RanBPM was detected by both in vivo and in vitro ubiquitination assays. Finally, ubiquitin conjugation to RanBPM was inhibited in a dose-dependent manner by the addition of recombinant USP11. We conclude that RanBPM was the enzymic substrate for USP11 and was deubiquitinated specifically.
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Affiliation(s)
- Haruko Ideguchi
- First Department of Internal Medicine, Yokohama City University School of Medicine, 3-9 Fukuura, Yokohama 236-0004, Japan
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28
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Koishi R, Ando Y, Ono M, Shimamura M, Yasumo H, Fujiwara T, Horikoshi H, Furukawa H. Angptl3 regulates lipid metabolism in mice. Nat Genet 2002; 30:151-7. [PMID: 11788823 DOI: 10.1038/ng814] [Citation(s) in RCA: 318] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The KK obese mouse is moderately obese and has abnormally high levels of plasma insulin (hyperinsulinemia), glucose (hyperglycemia) and lipids (hyperlipidemia). In one strain (KK/San), we observed abnormally low plasma lipid levels (hypolipidemia). This mutant phenotype is inherited recessively as a mendelian trait. Here we report the mapping of the hypolipidemia (hypl) locus to the middle of chromosome 4 and positional cloning of the autosomal recessive mutation responsible for the hypolipidemia. The hypl locus encodes a unique angiopoietin-like lipoprotein modulator, which we named Allm1. It is identical to angiopoietin-like protein 3, encoded by Angptl3, and has a highly conserved counterpart in humans. Overexpression of Angptl3 or intravenous injection of the purified protein in KK/San mice elicited an increase in circulating plasma lipid levels. This increase was also observed in C57BL/6J normal mice. Taken together, these data suggest that Angptl3 regulates lipid metabolism in animals.
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Affiliation(s)
- Ryuta Koishi
- Biomedical Research Laboratories, Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan.
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29
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Groet J, Ives JH, Jones TA, Danton M, Flomen RH, Sheer D, Hra??an R, Paveli? K, Ni?eti? D. Narrowing of the region of allelic loss in 21q11-21 in squamous non-small cell lung carcinoma and cloning of a novel ubiquitin-specific protease gene from the deleted segment. Genes Chromosomes Cancer 2000. [DOI: 10.1002/(sici)1098-2264(200002)27:2<153::aid-gcc6>3.0.co;2-a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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30
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Sloper-Mould KE, Eyre HJ, Wang XW, Sutherland GR, Baker RT. Characterization and chromosomal localization of USP3, a novel human ubiquitin-specific protease. J Biol Chem 1999; 274:26878-84. [PMID: 10480896 DOI: 10.1074/jbc.274.38.26878] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Conjugation to the small eukaryotic protein ubiquitin can functionally modify or target proteins for degradation by the proteasome. Removal of the ubiquitin modification, or deubiquitination, is performed by ubiquitin-specific proteases and is an important mechanism regulating this pathway. Here we describe a novel human ubiquitin-specific protease, USP3, initially identified as a partial cDNA clone similar to one of two highly conserved sequence regions common to all ubiquitin-specific proteases. We have isolated a complete USP3 cDNA clone containing both of these conserved sequence regions. The USP3 gene appears to be single copy and maps to human chromosome 15q22.3. A USP3 probe detects two mRNA transcripts, one of which corresponds in length to the cDNA. Both are expressed at low levels in all tissues examined, with highest expression in pancreas. The USP3 protein is a functional ubiquitin-specific protease in vitro, and is able to inhibit ubiquitin-dependent degradation of both an N-end Rule substrate and abnormal endogenous proteins in yeast. USP3 is also only the second known ubiquitin-specific protease capable of efficiently cleaving a ubiquitin-proline bond.
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Affiliation(s)
- K E Sloper-Mould
- Molecular Genetics Group, John Curtin School of Medical Research, Australian National University, G. P. O. Box 334, Canberra, Australian Capital Territory 2601, Australia
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31
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Baker RT, Wang XW, Woollatt E, White JA, Sutherland GR. Identification, functional characterization, and chromosomal localization of USP15, a novel human ubiquitin-specific protease related to the UNP oncoprotein, and a systematic nomenclature for human ubiquitin-specific proteases. Genomics 1999; 59:264-74. [PMID: 10444327 DOI: 10.1006/geno.1999.5879] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We have identified a novel gene, USP15, encoding a human ubiquitin-specific protease (USP). The USP15 protein consists of 952 amino acids with a predicted molecular mass of 109.2 kDa and contains the highly conserved Cys and His boxes present in all members of the UBP family of deubiquitinating enzymes. USP15 shares 60.5% sequence identity and 76% sequence similarity with the human homolog (UNP/Unph/USP4) of the mouse Unp proto-oncogene. Recombinant USP15 demonstrated ubiquitin-specific protease activity against engineered linear fusions of ubiquitin to beta-galactosidase and glutathione S-transferase. USP15 can also cleave the ubiquitin-proline bond, a property previously unique to Unp/UNP. Chromosomal mapping by fluorescence in situ hybridization and radiation hybrid analyses localized the USP15 gene to chromosome band 12q14, a different location than that of UNP (3p21.3). Analysis of expressed sequence tag databases reveals evidence of alternate polyadenylation sites in the USP15 gene and also indicates that the gene may possess an exon/intron structure similar to that of the Unp gene, suggesting they have descended from a common ancestor. A systematic nomenclature for the human USPs is proposed.
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Affiliation(s)
- R T Baker
- Division of Molecular Medicine, Australian National University, Canberra, ACT, 2601, Australia.
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