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Li S, Yang L, Ding X, Sun H, Dong X, Yang F, Wang M, Zhang H, Li Y, Li B, Liu C. USP32 facilitates non-small cell lung cancer progression via deubiquitinating BAG3 and activating RAF-MEK-ERK signaling pathway. Oncogenesis 2024; 13:27. [PMID: 39030175 PMCID: PMC11271578 DOI: 10.1038/s41389-024-00528-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 07/03/2024] [Accepted: 07/04/2024] [Indexed: 07/21/2024] Open
Abstract
The regulatory significance of ubiquitin-specific peptidase 32 (USP32) in tumor is significant, nevertheless, the biological roles and regulatory mechanisms of USP32 in non-small cell lung cancer (NSCLC) remain unclear. According to our research, USP32 was strongly expressed in NSCLC cell lines and tissues and was linked to a bad prognosis for NSCLC patients. Interference with USP32 resulted in a significant inhibition of NSCLC cell proliferation, migration potential, and EMT development; on the other hand, USP32 overexpression had the opposite effect. To further elucidate the mechanism of action of USP32 in NSCLC, we screened H1299 cells for interacting proteins and found that USP32 interacts with BAG3 (Bcl2-associated athanogene 3) and deubiquitinates and stabilizes BAG3 in a deubiquitinating activity-dependent manner. Functionally, restoration of BAG3 expression abrogated the antitumor effects of USP32 silencing. Furthermore, USP32 increased the phosphorylation level of the RAF/MEK/ERK signaling pathway in NSCLC cells by stabilizing BAG3. In summary, these findings imply that USP32 is critical to the development of NSCLC and could offer a theoretical framework for the clinical diagnosis and management of NSCLC patients in the future.
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Affiliation(s)
- Shuang Li
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, 266071, Qingdao, China
| | - Lina Yang
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, 266071, Qingdao, China
| | - Xiaoyan Ding
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, 266071, Qingdao, China
- School of Basic Medicine, Institute of Stem Cell and Regenerative Medicine, Qingdao University, 266071, Qingdao, China
| | - Hongxiao Sun
- Heart Center, Women and Children's Hospital, Qingdao University, 6 Tongfu Road, 266034, Qingdao, China
| | - Xiaolei Dong
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, 266071, Qingdao, China
| | - Fanghao Yang
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, 266071, Qingdao, China
| | - Mengjun Wang
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, 266071, Qingdao, China
| | - Huhu Zhang
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, 266071, Qingdao, China
| | - Ya Li
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, 266071, Qingdao, China
| | - Bing Li
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, 266071, Qingdao, China.
- Department of Dermatology, The Affiliated Haici Hospital of Qingdao University, 266000, Qingdao, China.
| | - Chunyan Liu
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, 266071, Qingdao, China.
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Li M, Li J, Zhang S, Zhou L, Zhu Y, Li S, Li Q, Wang J, Song R. Progress in the study of autophagy-related proteins affecting resistance to chemotherapeutic drugs in leukemia. Front Cell Dev Biol 2024; 12:1394140. [PMID: 38887520 PMCID: PMC11180896 DOI: 10.3389/fcell.2024.1394140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 05/17/2024] [Indexed: 06/20/2024] Open
Abstract
Leukemia is a life-threatening malignant tumor of the hematopoietic system. Currently, the main treatment modalities are chemotherapy and hematopoietic stem cell transplantation. However, increased drug resistance due to decreased sensitivity of leukemia cells to chemotherapeutic drugs presents a major challenge in current treatments. Autophagy-associated proteins involved in autophagy initiation have now been shown to be involved in the development of various types of leukemia cells and are associated with drug resistance. Therefore, this review will explore the roles of autophagy-related proteins involved in four key autophagic processes: induction of autophagy and phagophore formation, phagophore extension, and autophagosome formation, on the development of various types of leukemias as well as drug resistance. Autophagy may become a promising therapeutic target for treating leukemia.
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Affiliation(s)
- Meng Li
- Nursing Department, The Third People’s Hospital of Henan Province, Zhengzhou, China
| | - Jing Li
- Department of Pathophysiology, Sepsis Translational Medicine Key Laboratory of Hunan Province, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Shiming Zhang
- Clinical College, Xiamen Medical University, Xiamen, Fujian, China
| | - Linghan Zhou
- Nursing Department, The Third People’s Hospital of Henan Province, Zhengzhou, China
| | - Yuanyuan Zhu
- Nursing Department, The Third People’s Hospital of Henan Province, Zhengzhou, China
| | - Shen Li
- Rehabilitation Department, Henan Institute of Massage, Luoyang, Henan, China
| | - Qiong Li
- Nursing Department, Xinxiang Medical University, Xinxiang, China
| | - Junjie Wang
- Plastic Surgery, The Third People’s Hospital of Henan Province, Zhengzhou, China
| | - Ruipeng Song
- Endocrinology Department, The Third People’s Hospital of Henan Province, Zhengzhou, China
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3
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Zhao L, Gao N, Peng X, Chen L, Meng T, Jiang C, Jin J, Zhang J, Duan Q, Tian H, Weng L, Wang X, Tan X, Li Y, Qin H, Yuan J, Ge X, Deng L, Wang P. TRAF4-Mediated LAMTOR1 Ubiquitination Promotes mTORC1 Activation and Inhibits the Inflammation-Induced Colorectal Cancer Progression. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2301164. [PMID: 38229144 DOI: 10.1002/advs.202301164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 11/28/2023] [Indexed: 01/18/2024]
Abstract
Mechanistic target of rapamycin complex 1 (mTORC1) is a conserved serine/threonine kinase that integrates various environmental signals to regulate cell growth and metabolism. mTORC1 activation requires tethering to lysosomes by the Ragulator-Rag complex. However, the dynamic regulation of the interaction between Ragulator and Rag guanosine triphosphatase (GTPase) remains unclear. In this study, that LAMTOR1, an essential component of Ragulator, is dynamically ubiquitinated depending on amino acid abundance is reported. It is found that the E3 ligase TRAF4 directly interacts with LAMTOR1 and catalyzes the K63-linked polyubiquitination of LAMTOR1 at K151. Ubiquitination of LAMTOR1 by TRAF4 promoted its binding to Rag GTPases and enhanced mTORC1 activation, K151R knock-in or TRAF4 knock-out blocks amino acid-induced mTORC1 activation and accelerates the development of inflammation-induced colon cancer. This study revealed that TRAF4-mediated LAMTOR1 ubiquitination is a regulatory mechanism for mTORC1 activation and provides a therapeutic target for diseases involving mTORC1 dysregulation.
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Affiliation(s)
- Linlin Zhao
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai, 200092, P. R. China
| | - Ni Gao
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai, 200092, P. R. China
| | - Xiaoping Peng
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai, 200092, P. R. China
| | - Lei Chen
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai, 200092, P. R. China
| | - Tong Meng
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai, 200092, P. R. China
- Department of Orthopedics, Shanghai General Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200940, P. R. China
| | - Cong Jiang
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai, 200092, P. R. China
| | - Jiali Jin
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai, 200092, P. R. China
| | - Jiawen Zhang
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai, 200092, P. R. China
| | - Qiuhui Duan
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai, 200092, P. R. China
| | - Hongling Tian
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai, 200092, P. R. China
| | - Linjun Weng
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai, 200092, P. R. China
| | - Xinbo Wang
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai, 200092, P. R. China
| | - Xiao Tan
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai, 200092, P. R. China
| | - Yaxu Li
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai, 200092, P. R. China
| | - Huanlong Qin
- Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital, Tongji University, Shanghai, 200092, P. R. China
- Research Institute of Intestinal Diseases, Tongji University School of Medicine, Shanghai, 200092, P. R. China
| | - Jian Yuan
- Department of Biochemistry and Molecular Biology, Tongji University School of Medicine, Shanghai, 200092, P. R. China
- Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, P. R. China
| | - Xin Ge
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai, 200092, P. R. China
| | - Lu Deng
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, P. R. China
| | - Ping Wang
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai, 200092, P. R. China
- Department of Biochemistry and Molecular Biology, Tongji University School of Medicine, Shanghai, 200092, P. R. China
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4
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Wang Y, Engel T, Teng X. Post-translational regulation of the mTORC1 pathway: A switch that regulates metabolism-related gene expression. BIOCHIMICA ET BIOPHYSICA ACTA. GENE REGULATORY MECHANISMS 2024; 1867:195005. [PMID: 38242428 DOI: 10.1016/j.bbagrm.2024.195005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 12/15/2023] [Accepted: 01/03/2024] [Indexed: 01/21/2024]
Abstract
The mechanistic target of rapamycin complex 1 (mTORC1) is a kinase complex that plays a crucial role in coordinating cell growth in response to various signals, including amino acids, growth factors, oxygen, and ATP. Activation of mTORC1 promotes cell growth and anabolism, while its suppression leads to catabolism and inhibition of cell growth, enabling cells to withstand nutrient scarcity and stress. Dysregulation of mTORC1 activity is associated with numerous diseases, such as cancer, metabolic disorders, and neurodegenerative conditions. This review focuses on how post-translational modifications, particularly phosphorylation and ubiquitination, modulate mTORC1 signaling pathway and their consequential implications for pathogenesis. Understanding the impact of phosphorylation and ubiquitination on the mTORC1 signaling pathway provides valuable insights into the regulation of cellular growth and potential therapeutic targets for related diseases.
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Affiliation(s)
- Yitao Wang
- College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China; Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, University of Medicine and Health Sciences, Dublin D02 YN77, Ireland
| | - Tobias Engel
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, University of Medicine and Health Sciences, Dublin D02 YN77, Ireland; FutureNeuro, SFI Research Centre for Chronic and Rare Neurological Diseases, RCSI University of Medicine and Health Sciences, Dublin D02 YN77, Ireland
| | - Xinchen Teng
- College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China.
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5
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Ou X, Tan Y, Xie J, Yuan J, Deng X, Shao R, Song C, Cao X, Xie X, He R, Li Y, Tang H. Methylation of GPRC5A promotes liver metastasis and docetaxel resistance through activating mTOR signaling pathway in triple negative breast cancer. Drug Resist Updat 2024; 73:101063. [PMID: 38335844 DOI: 10.1016/j.drup.2024.101063] [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: 11/09/2023] [Revised: 01/20/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024]
Abstract
AIMS This study aims to explore the function and mechanism of G Protein-coupled receptor class C group 5 member A (GPRC5A) in docetaxel-resistance and liver metastasis of breast cancer. METHODS Single-cell RNA transcriptomic analysis and bioinformatic analysis are used to screen relevant genes in breast cancer metastatic hepatic specimens. MeRIP, dual-luciferase analysis and bioinformation were used to detect m6A modulation. Mass spectrometry (MS), co-inmunoprecipitation (co-IP) and immunofluorescence colocalization were executed to explore the mechanism of GPRC5A in breast cancer cells. RESULT GPRC5A was upregulated in triple-negative breast cancer (TNBC) and was associated with a poor prognosis. In vitro and in vivo experiments demonstrated that knockdown of GPRC5A alleviated metastasis and resistance to docetaxel in TNBC. Overexpression of GPRC5A had the opposite effects. The m6A methylation of GPRC5A mRNA was modulated by METTL3 and YTHDF1, which facilitates its translation. GPRC5A inhibited the ubiquitination-dependent degradation of LAMTOR1, resulting in the recruitment of mTORC1 to lysosomes and activating the mTORC1/p70s6k signaling pathway. CONCLUSION METTL3/YTHDF1 axis up-regulates GPRC5A expression by m6A methylation. GPRC5A activates mTORC1/p70s6k signaling pathway by recruiting mTORC1 to lysosomes, consequently promotes docetaxel-resistance and liver metastasis.
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Affiliation(s)
- Xueqi Ou
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Yeru Tan
- The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Jindong Xie
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Jingping Yuan
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Xinpei Deng
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Ruonan Shao
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Cailu Song
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Xi Cao
- The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Xiaoming Xie
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Rongfang He
- The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China.
| | - Yuehua Li
- The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China.
| | - Hailin Tang
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, China.
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Mende H, Khatri A, Lange C, Poveda-Cuevas SA, Tascher G, Covarrubias-Pinto A, Löhr F, Koschade SE, Dikic I, Münch C, Bremm A, Brunetti L, Brandts CH, Uckelmann H, Dötsch V, Rogov VV, Bhaskara RM, Müller S. An atypical GABARAP binding module drives the pro-autophagic potential of the AML-associated NPM1c variant. Cell Rep 2023; 42:113484. [PMID: 37999976 DOI: 10.1016/j.celrep.2023.113484] [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: 03/29/2023] [Revised: 09/22/2023] [Accepted: 11/08/2023] [Indexed: 11/26/2023] Open
Abstract
The nucleolar scaffold protein NPM1 is a multifunctional regulator of cellular homeostasis, genome integrity, and stress response. NPM1 mutations, known as NPM1c variants promoting its aberrant cytoplasmic localization, are the most frequent genetic alterations in acute myeloid leukemia (AML). A hallmark of AML cells is their dependency on elevated autophagic flux. Here, we show that NPM1 and NPM1c induce the autophagy-lysosome pathway by activating the master transcription factor TFEB, thereby coordinating the expression of lysosomal proteins and autophagy regulators. Importantly, both NPM1 and NPM1c bind to autophagy modifiers of the GABARAP subfamily through an atypical binding module preserved within its N terminus. The propensity of NPM1c to induce autophagy depends on this module, likely indicating that NPM1c exerts its pro-autophagic activity by direct engagement with GABARAPL1. Our data report a non-canonical binding mode of GABARAP family members that drives the pro-autophagic potential of NPM1c, potentially enabling therapeutic options.
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Affiliation(s)
- Hannah Mende
- Goethe University Frankfurt, Institute of Biochemistry II, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Anshu Khatri
- Goethe University Frankfurt, Institute of Biophysical Chemistry and Center for Biomolecular Magnetic Resonance, Max-von-Laue Street 9, 60438 Frankfurt, Germany
| | - Carolin Lange
- Goethe University Frankfurt, Institute of Biochemistry II, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany; Goethe University Frankfurt, Buchmann Institute for Molecular Life Sciences, Max-von-Laue Street 15, 60438 Frankfurt, Germany
| | - Sergio Alejandro Poveda-Cuevas
- Goethe University Frankfurt, Institute of Biochemistry II, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany; Goethe University Frankfurt, Buchmann Institute for Molecular Life Sciences, Max-von-Laue Street 15, 60438 Frankfurt, Germany
| | - Georg Tascher
- Goethe University Frankfurt, Institute of Biochemistry II, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Adriana Covarrubias-Pinto
- Goethe University Frankfurt, Institute of Biochemistry II, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Frank Löhr
- Goethe University Frankfurt, Institute of Biophysical Chemistry and Center for Biomolecular Magnetic Resonance, Max-von-Laue Street 9, 60438 Frankfurt, Germany
| | - Sebastian E Koschade
- Goethe University Frankfurt, Institute of Biochemistry II, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany; Goethe University Frankfurt, University Hospital, Department of Medicine, Hematology/Oncology, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Ivan Dikic
- Goethe University Frankfurt, Institute of Biochemistry II, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Christian Münch
- Goethe University Frankfurt, Institute of Biochemistry II, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Anja Bremm
- Goethe University Frankfurt, Institute of Biochemistry II, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Lorenzo Brunetti
- Marche Polytechnic University, Department of Clinical and Molecular Sciences, Via Tronto 10, 60020 Ancona, Italy
| | - Christian H Brandts
- Goethe University Frankfurt, University Hospital, Department of Medicine, Hematology/Oncology, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Hannah Uckelmann
- Goethe University Frankfurt, University Hospital, Department of Pediatrics, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Volker Dötsch
- Goethe University Frankfurt, Institute of Biophysical Chemistry and Center for Biomolecular Magnetic Resonance, Max-von-Laue Street 9, 60438 Frankfurt, Germany
| | - Vladimir V Rogov
- Goethe University Frankfurt, Institute of Pharmaceutical Chemistry, Max-von-Laue Street 15, 60438 Frankfurt, Germany; Goethe University Frankfurt, Structural Genomics Consortium, Buchmann Institute for Molecular Life Sciences, Max-von-Laue Street 15, 60438 Frankfurt, Germany
| | - Ramachandra M Bhaskara
- Goethe University Frankfurt, Institute of Biochemistry II, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany; Goethe University Frankfurt, Buchmann Institute for Molecular Life Sciences, Max-von-Laue Street 15, 60438 Frankfurt, Germany.
| | - Stefan Müller
- Goethe University Frankfurt, Institute of Biochemistry II, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany.
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7
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Li S, Song Y, Wang K, Liu G, Dong X, Yang F, Chen G, Cao C, Zhang H, Wang M, Li Y, Zeng T, Liu C, Li B. USP32 deubiquitinase: cellular functions, regulatory mechanisms, and potential as a cancer therapy target. Cell Death Discov 2023; 9:338. [PMID: 37679322 PMCID: PMC10485055 DOI: 10.1038/s41420-023-01629-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/18/2023] [Accepted: 08/24/2023] [Indexed: 09/09/2023] Open
Abstract
An essential protein regulatory system in cells is the ubiquitin-proteasome pathway. The substrate is modified by the ubiquitin ligase system (E1-E2-E3) in this pathway, which is a dynamic protein bidirectional modification regulation system. Deubiquitinating enzymes (DUBs) are tasked with specifically hydrolyzing ubiquitin molecules from ubiquitin-linked proteins or precursor proteins and inversely regulating protein degradation, which in turn affects protein function. The ubiquitin-specific peptidase 32 (USP32) protein level is associated with cell cycle progression, proliferation, migration, invasion, and other cellular biological processes. It is an important member of the ubiquitin-specific protease family. It is thought that USP32, a unique enzyme that controls the ubiquitin process, is closely linked to the onset and progression of many cancers, including small cell lung cancer, gastric cancer, breast cancer, epithelial ovarian cancer, glioblastoma, gastrointestinal stromal tumor, acute myeloid leukemia, and pancreatic adenocarcinoma. In this review, we focus on the multiple mechanisms of USP32 in various tumor types and show that USP32 controls the stability of many distinct proteins. Therefore, USP32 is a key and promising therapeutic target for tumor therapy, which could provide important new insights and avenues for antitumor drug development. The therapeutic importance of USP32 in cancer treatment remains to be further proven. In conclusion, there are many options for the future direction of USP32 research.
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Grants
- Bing Li, Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, Qingdao, China Chunyan Liu, Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, Qingdao, China
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Affiliation(s)
- Shuang Li
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Yang Song
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Kexin Wang
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Guoxiang Liu
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Xiaolei Dong
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Fanghao Yang
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Guang Chen
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Can Cao
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Huhu Zhang
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Mengjun Wang
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Ya Li
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Teng Zeng
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Chunyan Liu
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, Qingdao, China.
| | - Bing Li
- Department of Genetics and Cell Biology, School of Basic Medicine, Qingdao University, Qingdao, China.
- Department of Hematology, The Affiliated Hospital of Qingdao University, Qingdao, China.
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8
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Hertel A, Eimer S, Bremm A. LAMTOR1 ubiquitination restricts its interaction with the vacuolar-type H +-ATPase, promotes autophagy and is controlled by USP32. Autophagy 2023; 19:2406-2407. [PMID: 36847417 PMCID: PMC10351442 DOI: 10.1080/15548627.2023.2184958] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 02/20/2023] [Accepted: 02/22/2023] [Indexed: 03/01/2023] Open
Abstract
Among the various signals governing autophagy, ubiquitination plays a critical role both by controlling the stability of upstream regulators or components of macroautophagy/autophagy pathways and by facilitating the recruitment of cargo to autophagy receptors. As such, modulators of ubiquitin signaling can influence autophagic substrate degradation. Recently, we identified a non-proteolytic ubiquitin signal at the Ragulator complex subunit LAMTOR1 that is reversed by the deubiquitinase USP32. Loss of USP32 promotes ubiquitination within the unstructured N-terminal region of LAMTOR1 and prevents its efficient interaction with the vacuolar-type H+-ATPase, a prerequisite for full activation of MTORC1 at lysosomes. Consequently, MTORC1 activity is decreased and autophagy is upregulated in USP32 knockout cells. This phenotype is conserved in Caenorhabditis elegans. Depletion of USP32 homolog CYK-3 in worms results in LET-363/MTOR inhibition and autophagy induction. Based on our data, we propose an additional control layer of the MTORC1 activation cascade at lysosomes via USP32-regulated LAMTOR1 ubiquitination.
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Affiliation(s)
- Alexandra Hertel
- Institute of Biochemistry II, Goethe University Frankfurt - Medical Faculty, University Hospital, Frankfurt am Main, Germany
| | - Stefan Eimer
- Institute of Cell Biology and Neuroscience, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Anja Bremm
- Institute of Biochemistry II, Goethe University Frankfurt - Medical Faculty, University Hospital, Frankfurt am Main, Germany
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