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Zeng C, Han S, Pan Y, Huang Z, Zhang B, Zhang B. Revisiting the chaperonin T-complex protein-1 ring complex in human health and disease: A proteostasis modulator and beyond. Clin Transl Med 2024; 14:e1592. [PMID: 38363102 PMCID: PMC10870801 DOI: 10.1002/ctm2.1592] [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: 11/23/2023] [Revised: 01/28/2024] [Accepted: 02/05/2024] [Indexed: 02/17/2024] Open
Abstract
BACKGROUND Disrupted protein homeostasis (proteostasis) has been demonstrated to facilitate the progression of various diseases. The cytosolic T-complex protein-1 ring complex (TRiC/CCT) was discovered to be a critical player in orchestrating proteostasis by folding eukaryotic proteins, guiding intracellular localisation and suppressing protein aggregation. Intensive investigations of TRiC/CCT in different fields have improved the understanding of its role and molecular mechanism in multiple physiological and pathological processes. MAIN BODY In this review, we embark on a journey through the dynamic protein folding cycle of TRiC/CCT, unraveling the intricate mechanisms of its substrate selection, recognition, and intriguing folding and assembly processes. In addition to discussing the critical role of TRiC/CCT in maintaining proteostasis, we detail its involvement in cell cycle regulation, apoptosis, autophagy, metabolic control, adaptive immunity and signal transduction processes. Furthermore, we meticulously catalogue a compendium of TRiC-associated diseases, such as neuropathies, cardiovascular diseases and various malignancies. Specifically, we report the roles and molecular mechanisms of TRiC/CCT in regulating cancer formation and progression. Finally, we discuss unresolved issues in TRiC/CCT research, highlighting the efforts required for translation to clinical applications, such as diagnosis and treatment. CONCLUSION This review aims to provide a comprehensive view of TRiC/CCT for researchers to inspire further investigations and explorations of potential translational possibilities.
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Affiliation(s)
- Chenglong Zeng
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
- Clinical Medical Research Center of Hepatic Surgery at Hubei ProvinceWuhanChina
- Hubei Key Laboratory of Hepato‐Pancreatic‐Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
| | - Shenqi Han
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
- Clinical Medical Research Center of Hepatic Surgery at Hubei ProvinceWuhanChina
- Hubei Key Laboratory of Hepato‐Pancreatic‐Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
| | - Yonglong Pan
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
- Clinical Medical Research Center of Hepatic Surgery at Hubei ProvinceWuhanChina
- Hubei Key Laboratory of Hepato‐Pancreatic‐Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
| | - Zhao Huang
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
- Clinical Medical Research Center of Hepatic Surgery at Hubei ProvinceWuhanChina
- Hubei Key Laboratory of Hepato‐Pancreatic‐Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
| | - Binhao Zhang
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
- Clinical Medical Research Center of Hepatic Surgery at Hubei ProvinceWuhanChina
- Hubei Key Laboratory of Hepato‐Pancreatic‐Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
| | - Bixiang Zhang
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
- Clinical Medical Research Center of Hepatic Surgery at Hubei ProvinceWuhanChina
- Hubei Key Laboratory of Hepato‐Pancreatic‐Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
- Key Laboratory of Organ Transplantation, Ministry of EducationWuhanChina
- Key Laboratory of Organ Transplantation, National Health CommissionWuhanChina
- Key Laboratory of Organ Transplantation, Chinese Academy of Medical SciencesWuhanChina
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GWAK SEUNGHEE, LEE JUHYUN, OH EUNJI, LEE DOHYUN, HAN WONSHIK, KIM JONGMIN, KIM KYONGTAI. Vaccinia-related kinase 2 variants differentially affect breast cancer growth by regulating kinase activity. Oncol Res 2023; 32:421-432. [PMID: 38186576 PMCID: PMC10765118 DOI: 10.32604/or.2023.031031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 08/03/2023] [Indexed: 01/09/2024] Open
Abstract
Genetic information is transcribed from genomic DNA to mRNA, which is then translated into three-dimensional proteins. mRNAs can undergo various post-transcriptional modifications, including RNA editing that alters mRNA sequences, ultimately affecting protein function. In this study, RNA editing was identified at the 499th base (c.499) of human vaccinia-related kinase 2 (VRK2). This RNA editing changes the amino acid in the catalytic domain of VRK2 from isoleucine (with adenine base) to valine (with guanine base). Isoleucine-containing VRK2 has higher kinase activity than the valine-containing VRK2, which leads to an increase in tumor cell proliferation. Earlier we reported that VRK2 directly interacts with dystrobrevin-binding protein (dysbindin) and results in reducing its stability. Herein, we demonstrate that isoleucine-containing VRK2 decreases the level of dysbindin than valine-containing VRK2. Dysbindin interacts with cyclin D and thereby regulates its expression and function. The reduction in the level of dysbindin by isoleucine-containing VRK2 further enhances the cyclin D expression, resulting in increased tumor growth and reduction in survival rates. It has also been observed that in patient samples, VRK2 level was elevated in breast cancer tissue compared to normal breast tissue. Additionally, the isoleucine form of VRK2 exhibited a greater increase in breast cancer tissue. Therefore, it is concluded that VRK2, especially dependent on the 167th variant amino acid, can be one of the indexes of tumor progression and proliferation.
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Affiliation(s)
- SEUNG-HEE GWAK
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, 37673, Korea
| | - JUHYUN LEE
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, 37673, Korea
| | - EUNJI OH
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, 37673, Korea
| | - DOHYUN LEE
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, 37673, Korea
- R&D Center, NovMetaPharma Co., Ltd., Pohang, 37668, Korea
| | - WONSHIK HAN
- Department of Surgery and Cancer Research Institute, Seoul National University College of Medicine, Seoul, 03080, Korea
| | - JONGMIN KIM
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, 37673, Korea
| | - KYONG-TAI KIM
- Generative Genomics Research Center, Global Green Research & Development Center, Handong Global University, Pohang, 37554, Korea
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3
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Kim SH, Ryu KJ, Hong KS, Kim H, Han H, Kim M, Kim T, Ok DW, Yang JW, Hwangbo C, Kim KD, Yoo J. ERK3 Increases Snail Protein Stability by Inhibiting FBXO11-Mediated Snail Ubiquitination. Cancers (Basel) 2023; 16:105. [PMID: 38201533 PMCID: PMC10777929 DOI: 10.3390/cancers16010105] [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: 11/23/2023] [Revised: 12/19/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024] Open
Abstract
Snail is a key regulator of the epithelial-mesenchymal transition (EMT), the key step in the tumorigenesis and metastasis of tumors. Although induction of Snail transcription precedes the induction of EMT, the post-translational regulation of Snail is also important in determining Snail protein levels, stability, and its ability to induce EMT. Several kinases are known to enhance the stability of the Snail protein by preventing its ubiquitination; however, the precise molecular mechanisms by which these kinases prevent Snail ubiquitination remain unclear. Here, we identified ERK3 as a novel kinase that interacts with Snail and enhances its protein stability. Although ERK3 could not directly phosphorylate Snail, Erk3 increased Snail protein stability by inhibiting the binding of FBXO11, an E3 ubiquitin ligase that can induce Snail ubiquitination and degradation, to Snail. Importantly, functional studies and analysis of clinical samples indicated the crucial role of ERK3 in the regulation of Snail protein stability in pancreatic cancer. Therefore, we conclude that ERK3 is a key regulator for enhancing Snail protein stability in pancreatic cancer cells by inhibiting the interaction between Snail and FBXO11.
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Affiliation(s)
- Seon-Hee Kim
- Division of Applied Life Science, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea; (S.-H.K.); (K.-J.R.); (K.-S.H.); (H.K.); (H.H.); (M.K.); (T.K.); (D.W.O.); (C.H.); (K.D.K.)
| | - Ki-Jun Ryu
- Division of Applied Life Science, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea; (S.-H.K.); (K.-J.R.); (K.-S.H.); (H.K.); (H.H.); (M.K.); (T.K.); (D.W.O.); (C.H.); (K.D.K.)
| | - Keun-Seok Hong
- Division of Applied Life Science, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea; (S.-H.K.); (K.-J.R.); (K.-S.H.); (H.K.); (H.H.); (M.K.); (T.K.); (D.W.O.); (C.H.); (K.D.K.)
| | - Hyemin Kim
- Division of Applied Life Science, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea; (S.-H.K.); (K.-J.R.); (K.-S.H.); (H.K.); (H.H.); (M.K.); (T.K.); (D.W.O.); (C.H.); (K.D.K.)
| | - Hyeontak Han
- Division of Applied Life Science, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea; (S.-H.K.); (K.-J.R.); (K.-S.H.); (H.K.); (H.H.); (M.K.); (T.K.); (D.W.O.); (C.H.); (K.D.K.)
| | - Minju Kim
- Division of Applied Life Science, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea; (S.-H.K.); (K.-J.R.); (K.-S.H.); (H.K.); (H.H.); (M.K.); (T.K.); (D.W.O.); (C.H.); (K.D.K.)
| | - Taeyoung Kim
- Division of Applied Life Science, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea; (S.-H.K.); (K.-J.R.); (K.-S.H.); (H.K.); (H.H.); (M.K.); (T.K.); (D.W.O.); (C.H.); (K.D.K.)
| | - Dong Woo Ok
- Division of Applied Life Science, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea; (S.-H.K.); (K.-J.R.); (K.-S.H.); (H.K.); (H.H.); (M.K.); (T.K.); (D.W.O.); (C.H.); (K.D.K.)
| | - Jung Wook Yang
- Department of Pathology, Gyeongsang National University Hospital, Gyeongsang National University College of Medicine, Jinju 52727, Republic of Korea;
| | - Cheol Hwangbo
- Division of Applied Life Science, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea; (S.-H.K.); (K.-J.R.); (K.-S.H.); (H.K.); (H.H.); (M.K.); (T.K.); (D.W.O.); (C.H.); (K.D.K.)
- Division of Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Kwang Dong Kim
- Division of Applied Life Science, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea; (S.-H.K.); (K.-J.R.); (K.-S.H.); (H.K.); (H.H.); (M.K.); (T.K.); (D.W.O.); (C.H.); (K.D.K.)
- Division of Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Jiyun Yoo
- Division of Applied Life Science, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea; (S.-H.K.); (K.-J.R.); (K.-S.H.); (H.K.); (H.H.); (M.K.); (T.K.); (D.W.O.); (C.H.); (K.D.K.)
- Division of Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
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4
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Zhou L, Qin B, Yassine DM, Luo M, Liu X, Wang F, Wang Y. Structure and function of the highly homologous deubiquitinases ubiquitin specific peptidase 25 and 28: Insights into their pathophysiological and therapeutic roles. Biochem Pharmacol 2023; 213:115624. [PMID: 37245535 DOI: 10.1016/j.bcp.2023.115624] [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: 03/13/2023] [Revised: 05/19/2023] [Accepted: 05/22/2023] [Indexed: 05/30/2023]
Abstract
Deubiquitination is the reverse process of ubiquitination, an important protein post-translational modification. Deubiquitination is assisted by deubiquitinating enzymes (DUBs), which catalyze the hydrolysis and removal of ubiquitin chains from targeted proteins and play an important role in regulating protein stability, cell signaling transduction, and programmed cell death. Ubiquitin-specific peptidases 25 and 28 (USP25 and USP28), important members of the USP subfamily of DUBs, are highly homologous, strictly regulated, and closely associated with various diseases, such as cancer and neurodegenerative diseases. Recently, the development of inhibitors targeting USP25 and USP28 for disease treatment has garnered extreme attention. Several non-selective and selective inhibitors have shown potential inhibitory effects. However, the specificity, potency, and action mechanism of these inhibitors remain to be further improved and clarified. Herein, we summarize the structure, regulation, emerging physiological roles, and target inhibition of USP25 and USP28 to provide a basis for the development of highly potent and specific inhibitors for the treatment of diseases, such as colorectal cancer, breast cancer and so on.
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Affiliation(s)
- Lihui Zhou
- Key Laboratory of Molecular Medicine and Biotherapy, School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Biying Qin
- Key Laboratory of Molecular Medicine and Biotherapy, School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Demna Mohamed Yassine
- Key Laboratory of Molecular Medicine and Biotherapy, School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Maoguo Luo
- Key Laboratory of Molecular Medicine and Biotherapy, School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Xiaoling Liu
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Feng Wang
- Key Laboratory of Molecular Medicine and Biotherapy, School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Yanfeng Wang
- Key Laboratory of Molecular Medicine and Biotherapy, School of Life Science, Beijing Institute of Technology, Beijing 100081, China.
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5
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Estavoyer B, Messmer C, Echbicheb M, Rudd CE, Milot E, Affar EB. Mechanisms orchestrating the enzymatic activity and cellular functions of deubiquitinases. J Biol Chem 2022; 298:102198. [PMID: 35764170 PMCID: PMC9356280 DOI: 10.1016/j.jbc.2022.102198] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 06/13/2022] [Accepted: 06/22/2022] [Indexed: 11/30/2022] Open
Abstract
Deubiquitinases (DUBs) are required for the reverse reaction of ubiquitination and act as major regulators of ubiquitin signaling processes. Emerging evidence suggests that these enzymes are regulated at multiple levels in order to ensure proper and timely substrate targeting and to prevent the adverse consequences of promiscuous deubiquitination. The importance of DUB regulation is highlighted by disease-associated mutations that inhibit or activate DUBs, deregulating their ability to coordinate cellular processes. Here, we describe the diverse mechanisms governing protein stability, enzymatic activity, and function of DUBs. In particular, we outline how DUBs are regulated by their protein domains and interacting partners. Intramolecular interactions can promote protein stability of DUBs, influence their subcellular localization, and/or modulate their enzymatic activity. Remarkably, these intramolecular interactions can induce self-deubiquitination to counteract DUB ubiquitination by cognate E3 ubiquitin ligases. In addition to intramolecular interactions, DUBs can also oligomerize and interact with a wide variety of cellular proteins, thereby forming obligate or facultative complexes that regulate their enzymatic activity and function. The importance of signaling and post-translational modifications in the integrated control of DUB function will also be discussed. While several DUBs are described with respect to the multiple layers of their regulation, the tumor suppressor BAP1 will be outlined as a model enzyme whose localization, stability, enzymatic activity, and substrate recognition are highly orchestrated by interacting partners and post-translational modifications.
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Affiliation(s)
- Benjamin Estavoyer
- Laboratory for Cell Signaling and Cancer, Maisonneuve-Rosemont Hospital Research Center, H1T 2M4, Montréal, Québec, Canada
| | - Clémence Messmer
- Laboratory for Cell Signaling and Cancer, Maisonneuve-Rosemont Hospital Research Center, H1T 2M4, Montréal, Québec, Canada
| | - Mohamed Echbicheb
- Laboratory for Cell Signaling and Cancer, Maisonneuve-Rosemont Hospital Research Center, H1T 2M4, Montréal, Québec, Canada
| | - Christopher E Rudd
- Laboratory for Cell Signaling in Immunotherapy, Maisonneuve-Rosemont Hospital Research Center, H1T 2M4, Montréal, Québec, Canada; Department of Medicine, University of Montréal, Montréal H3C 3J7, Québec, Canada
| | - Eric Milot
- Laboratory for Malignant Hematopoiesis and Epigenetic Regulation of Gene Expression, Maisonneuve-Rosemont Hospital Research Center, H1T 2M4, Montréal, Québec, Canada; Department of Medicine, University of Montréal, Montréal H3C 3J7, Québec, Canada
| | - El Bachir Affar
- Laboratory for Cell Signaling and Cancer, Maisonneuve-Rosemont Hospital Research Center, H1T 2M4, Montréal, Québec, Canada; Department of Medicine, University of Montréal, Montréal H3C 3J7, Québec, Canada.
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6
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Ghozlan H, Cox A, Nierenberg D, King S, Khaled AR. The TRiCky Business of Protein Folding in Health and Disease. Front Cell Dev Biol 2022; 10:906530. [PMID: 35602608 PMCID: PMC9117761 DOI: 10.3389/fcell.2022.906530] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 04/20/2022] [Indexed: 01/03/2023] Open
Abstract
Maintenance of the cellular proteome or proteostasis is an essential process that when deregulated leads to diseases like neurological disorders and cancer. Central to proteostasis are the molecular chaperones that fold proteins into functional 3-dimensional (3D) shapes and prevent protein aggregation. Chaperonins, a family of chaperones found in all lineages of organisms, are efficient machines that fold proteins within central cavities. The eukaryotic Chaperonin Containing TCP1 (CCT), also known as Tailless complex polypeptide 1 (TCP-1) Ring Complex (TRiC), is a multi-subunit molecular complex that folds the obligate substrates, actin, and tubulin. But more than folding cytoskeletal proteins, CCT differs from most chaperones in its ability to fold proteins larger than its central folding chamber and in a sequential manner that enables it to tackle proteins with complex topologies or very large proteins and complexes. Unique features of CCT include an asymmetry of charges and ATP affinities across the eight subunits that form the hetero-oligomeric complex. Variable substrate binding capacities endow CCT with a plasticity that developed as the chaperonin evolved with eukaryotes and acquired functional capacity in the densely packed intracellular environment. Given the decades of discovery on the structure and function of CCT, much remains unknown such as the scope of its interactome. New findings on the role of CCT in disease, and potential for diagnostic and therapeutic uses, heighten the need to better understand the function of this essential molecular chaperone. Clues as to how CCT causes cancer or neurological disorders lie in the early studies of the chaperonin that form a foundational knowledgebase. In this review, we span the decades of CCT discoveries to provide critical context to the continued research on the diverse capacities in health and disease of this essential protein-folding complex.
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Affiliation(s)
- Heba Ghozlan
- Division of Cancer Research, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, United States
- Department of Physiology and Biochemistry, Jordan University of Science and Technology, Irbid, Jordan
| | - Amanda Cox
- Division of Cancer Research, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, United States
| | - Daniel Nierenberg
- Division of Cancer Research, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, United States
| | - Stephen King
- Division of Neuroscience, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, United States
| | - Annette R. Khaled
- Division of Cancer Research, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, United States
- *Correspondence: Annette R. Khaled,
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7
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Zhu H, Li Q, Zhao Y, Peng H, Guo L, Zhu J, Jiang Z, Zeng Z, Xu B, Chen S. Vaccinia-related kinase 2 drives pancreatic cancer progression by protecting Plk1 from Chfr-mediated degradation. Oncogene 2021; 40:4663-4674. [PMID: 34140642 DOI: 10.1038/s41388-021-01893-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 05/22/2021] [Accepted: 06/04/2021] [Indexed: 12/22/2022]
Abstract
As a key cell cycle regulator, polo-like kinase 1 (Plk1) has been recognized as a crucial factor involved in the progression of pancreatic cancer (PC). However, its regulatory mechanism is poorly understood. Here, we present evidence that Plk1 is a novel substrate of vaccinia-related kinase 2 (VRK2), a serine-threonine kinase that is highly expressed and predicts poor prognosis in PC. VRK2 phosphorylates Plk1 at threonine 210 and protects it from ubiquitin-dependent proteasomal degradation. We showed that mechanistically complement factor H-related protein (CFHR), as a major E3 ligase, promotes Plk1 degradation by ubiquitinating it at lysine 209. Phosphorylation of Plk1 at threonine 210 by VRK2 interferes with the interaction of Chfr with Plk1 and antagonizes Plk1 ubiquitination, thereby stabilizing the Plk1 protein. Taken together, our data reveal a mechanism of Plk1 overexpression in PC and provide evidence for targeting VRK2 as a potential therapeutic strategy.
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Affiliation(s)
- Hengqing Zhu
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, China
- Department of Thyroid Surgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Qing Li
- Department of Pathology, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yulan Zhao
- Department of Ultrasound in Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Hong Peng
- Department of Colorectal Surgery, 908th Hospital of Chinese People's Liberation Army Joint, Nanchang, China
| | - Liangyun Guo
- Department of Ultrasound, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jing Zhu
- Department of Pharmacy, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zi Jiang
- Department of Pharmacy, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhaoxia Zeng
- Department of Radiology, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Bin Xu
- Department of Burns, First Affiliated Hospital of Nanchang University, Nanchang, China.
| | - Sisi Chen
- Department of Neurology, Second Affiliated Hospital of Nanchang University, Nanchang, China.
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8
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Zhu W, Zheng D, Wang D, Yang L, Zhao C, Huang X. Emerging Roles of Ubiquitin-Specific Protease 25 in Diseases. Front Cell Dev Biol 2021; 9:698751. [PMID: 34249948 PMCID: PMC8262611 DOI: 10.3389/fcell.2021.698751] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 06/01/2021] [Indexed: 12/20/2022] Open
Abstract
The balance of ubiquitination and deubiquitination plays diverse roles in regulating protein stability and cellular homeostasis. Deubiquitinating enzymes catalyze the hydrolysis and removal of ubiquitin chains from target proteins and play critical roles in various disease processes, including cancer, immune responses to viral infections and neurodegeneration. This article aims to summarize roles of the deubiquitinating enzyme ubiquitin-specific protease 25 (USP25) in disease onset and progression. Previous studies have focused on the role of USP25 in antiviral immunity and neurodegenerative diseases. Recently, however, as the structural similarities and differences between USP25 and its homolog USP28 have become clear, mechanisms of action of USP25 in cancer and other diseases have been gradually revealed.
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Affiliation(s)
- Wenjing Zhu
- Division of Pulmonary Medicine, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - Dandan Zheng
- Division of Pulmonary Medicine, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - Dandan Wang
- Division of Pulmonary Medicine, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - Lehe Yang
- Division of Pulmonary Medicine, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - Chengguang Zhao
- Division of Pulmonary Medicine, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Xiaoying Huang
- Division of Pulmonary Medicine, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
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9
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Wang Y, Wang F. Post-Translational Modifications of Deubiquitinating Enzymes: Expanding the Ubiquitin Code. Front Pharmacol 2021; 12:685011. [PMID: 34177595 PMCID: PMC8224227 DOI: 10.3389/fphar.2021.685011] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/25/2021] [Indexed: 12/14/2022] Open
Abstract
Post-translational modifications such as ubiquitination play important regulatory roles in several biological processes in eukaryotes. This process could be reversed by deubiquitinating enzymes (DUBs), which remove conjugated ubiquitin molecules from target substrates. Owing to their role as essential enzymes in regulating all ubiquitin-related processes, the abundance, localization, and catalytic activity of DUBs are tightly regulated. Dysregulation of DUBs can cause dramatic physiological consequences and a variety of disorders such as cancer, and neurodegenerative and inflammatory diseases. Multiple factors, such as transcription and translation of associated genes, and the presence of accessory domains, binding proteins, and inhibitors have been implicated in several aspects of DUB regulation. Beyond this level of regulation, emerging studies show that the function of DUBs can be regulated by a variety of post-translational modifications, which significantly affect the abundance, localization, and catalytic activity of DUBs. The most extensively studied post-translational modification of DUBs is phosphorylation. Besides phosphorylation, ubiquitination, SUMOylation, acetylation, oxidation, and hydroxylation are also reported in DUBs. In this review, we summarize the current knowledge on the regulatory effects of post-translational modifications of DUBs.
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Affiliation(s)
- Yanfeng Wang
- Key Laboratory of Molecular Medicine and Biotherapy, School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Feng Wang
- Key Laboratory of Molecular Medicine and Biotherapy, School of Life Science, Beijing Institute of Technology, Beijing, China
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10
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Chen S, Du Y, Xu B, Li Q, Yang L, Jiang Z, Zeng Z, Chen L. Vaccinia-related kinase 2 blunts sorafenib's efficacy against hepatocellular carcinoma by disturbing the apoptosis-autophagy balance. Oncogene 2021; 40:3378-3393. [PMID: 33875785 DOI: 10.1038/s41388-021-01780-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 03/04/2021] [Accepted: 04/06/2021] [Indexed: 12/16/2022]
Abstract
Hepatocellular carcinoma (HCC) is a lethal malignancy with limited treatment options. Sorafenib is the only Food and Drug Administration (FDA)-approved first-line targeted drug for the treatment of advanced HCC. However, its effect on patient survival is limited. Recently, studies have demonstrated that the imbalance between apoptosis and autophagy plays a critical role in chemoresistance, and it is hypothesised that restoring the balance between these processes is a potential treatment strategy for improving chemoresistance in cancer. However, there is currently no evidence supporting this hypothesis. We aimed to investigate if vaccinia-related kinase 2 (VRK2), a serine/threonine protein kinase, confers sorafenib resistance in HCC cells. Here, we found that VRK2 was enriched in sorafenib-resistant HCC cells and patient-derived xenografts. Both in vivo and in vitro evidences showed that VRK2 blunts the efficacy of sorafenib against hepatocellular carcinoma by disturbing the balance between apoptosis and autophagy. Mechanistically, VRK2 promotes the phosphorylation of Bcl-2 by activating JNK1/MAPK8, thereby enhancing the dissociation of Bcl-2 from Beclin-1 and promoting the formation of the Beclin-1-Atg14-Vps34 complex, which facilitates autophagy. Furthermore, VRK2-induced phosphorylation of Bcl-2 promotes the interaction of Bcl-2 with BAX, thereby inhibiting apoptosis. In conclusion, targeting VRK2 for modulation of the balance between autophagy and apoptosis may be a novel strategy for overcoming sorafenib resistance in HCC.
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Affiliation(s)
- Sisi Chen
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yunyan Du
- Department of Medical, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China
| | - Bin Xu
- Department of Burns, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Qing Li
- Department of Pathology, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Le Yang
- Department of Pharmacy, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zi Jiang
- Department of Pharmacy, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhaoxia Zeng
- Department of Radiology, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Leifeng Chen
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, China.
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11
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Lualdi M, Alberio T, Fasano M. Proteostasis and Proteotoxicity in the Network Medicine Era. Int J Mol Sci 2020; 21:ijms21176405. [PMID: 32899160 PMCID: PMC7503343 DOI: 10.3390/ijms21176405] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 08/28/2020] [Accepted: 09/02/2020] [Indexed: 02/06/2023] Open
Abstract
Neurodegenerative proteinopathies are complex diseases that share some pathogenetic processes. One of these is the failure of the proteostasis network (PN), which includes all components involved in the synthesis, folding, and degradation of proteins, thus leading to the aberrant accumulation of toxic protein aggregates in neurons. The single components that belong to the three main modules of the PN are highly interconnected and can be considered as part of a single giant network. Several pharmacological strategies have been proposed to ameliorate neurodegeneration by targeting PN components. Nevertheless, effective disease-modifying therapies are still lacking. In this review article, after a general description of the PN and its failure in proteinopathies, we will focus on the available pharmacological tools to target proteostasis. In this context, we will discuss the main advantages of systems-based pharmacology in contrast to the classical targeted approach, by focusing on network pharmacology as a strategy to innovate rational drug design.
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12
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Block J. High risk genotypes for schizophrenia may have been adaptive in the context of smallpox. Med Hypotheses 2020; 137:109556. [DOI: 10.1016/j.mehy.2020.109556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 01/05/2020] [Indexed: 10/25/2022]
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13
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The Vaccinia Virus (VACV) B1 and Cellular VRK2 Kinases Promote VACV Replication Factory Formation through Phosphorylation-Dependent Inhibition of VACV B12. J Virol 2019; 93:JVI.00855-19. [PMID: 31341052 DOI: 10.1128/jvi.00855-19] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 07/16/2019] [Indexed: 01/08/2023] Open
Abstract
Comparative examination of viral and host protein homologs reveals novel mechanisms governing downstream signaling effectors of both cellular and viral origin. The vaccinia virus B1 protein kinase is involved in promoting multiple facets of the virus life cycle and is a homolog of three conserved cellular enzymes called vaccinia virus-related kinases (VRKs). Recent evidence indicates that B1 and VRK2 mediate a common pathway that is largely uncharacterized but appears independent of previous VRK substrates. Interestingly, separate studies described a novel role for B1 in inhibiting vaccinia virus protein B12, which otherwise impedes an early event in the viral lifecycle. Herein, we characterize the B1/VRK2 signaling axis to better understand their shared functions. First, we demonstrate that vaccinia virus uniquely requires VRK2 for viral replication in the absence of B1, unlike other DNA viruses. Employing loss-of-function analysis, we demonstrate that vaccinia virus's dependence on VRK2 is only observed in the presence of B12, suggesting that B1 and VRK2 share a pathway controlling B12. Moreover, we substantiate a B1/VRK2/B12 signaling axis by examining coprecipitation of B12 by B1 and VRK2. Employing execution point analysis, we reveal that virus replication proceeds normally through early protein translation and uncoating but stalls at replication factory formation in the presence of B12 activity. Finally, structure/function analyses of B1 and VRK2 demonstrate that enzymatic activity is essential for B1 or VRK2 to inhibit B12. Together, these data provide novel insights into B1/VRK signaling coregulation and support a model in which these enzymes modulate B12 in a phosphorylation-dependent manner.IMPORTANCE Constraints placed on viral genome size require that these pathogens must employ sophisticated, yet parsimonious mechanisms to effectively integrate with host cell signaling pathways. Poxviruses are no exception and employ several methods to balance these goals, including encoding single proteins that impact multiple downstream pathways. This study focuses on the vaccinia virus B1 protein kinase, an enzyme that promotes virus replication at multiple phases of the viral lifecycle. Herein, we demonstrate that in addition to its previously characterized functions, B1 inhibits vaccinia virus B12 protein via a phosphorylation-dependent mechanism and that this function of B1 can be complemented by the cellular B1 homolog VRK2. Combined with previous data implicating functional overlap between B1 and an additional cellular B1 homolog, VRK1, these data provide evidence of how poxviruses can be multifaceted in their mimicry of cellular proteins through the consolidation of functions of both VRK1 and VRK2 within the viral B1 protein kinase.
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14
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Newton TM, Duce JA, Bayle ED. The proteostasis network provides targets for neurodegeneration. Br J Pharmacol 2019; 176:3508-3514. [PMID: 30820936 DOI: 10.1111/bph.14643] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 11/03/2018] [Accepted: 02/15/2019] [Indexed: 12/28/2022] Open
Abstract
The production, quality control, and degradation of proteins are a tightly controlled process necessary for cell health. In order to regulate this process, cells rely upon a network of molecular chaperone proteins that bind misfolded proteins and help them fold correctly. In addition, some molecular chaperones can target terminally misfolded proteins for degradation. Neurons are particularly dependent upon this "proteostasis" system, failures in which lead to neurodegenerative disease. In this review, we identify opportunities for modulating molecular chaperone activity with small molecules, which could lower the burden of misfolded protein within neurons, reducing cell death and ameliorating the effects of neurodegeneration. LINKED ARTICLES: This article is part of a themed section on Therapeutics for Dementia and Alzheimer's Disease: New Directions for Precision Medicine. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v176.18/issuetoc.
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Affiliation(s)
- Timothy Mark Newton
- ALBORADA Drug Discovery Institute, University of Cambridge Island Research Building Cambridge Biomedical Campus, Hills Road, Cambridge, CB2 0AH, UK.,Reflection Therapeutics, IdeaSpace, University of Cambridge Biomedical Innovation Hub, Cambridge, UK
| | - James Alex Duce
- ALBORADA Drug Discovery Institute, University of Cambridge Island Research Building Cambridge Biomedical Campus, Hills Road, Cambridge, CB2 0AH, UK
| | - Elliott David Bayle
- Alzheimer's Research UK UCL Drug Discovery Institute, University College London, London, UK.,The Francis Crick Institute, 1 Midland Road, Kings Cross, London, NW1 1AT, UK
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15
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Lee J, Lee S, Ryu YJ, Lee D, Kim S, Seo JY, Oh E, Paek SH, Kim SU, Ha CM, Choi SY, Kim KT. Vaccinia-related kinase 2 plays a critical role in microglia-mediated synapse elimination during neurodevelopment. Glia 2019; 67:1667-1679. [PMID: 31050055 DOI: 10.1002/glia.23638] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 04/17/2019] [Accepted: 04/18/2019] [Indexed: 01/08/2023]
Abstract
During postnatal neurodevelopment, excessive synapses must be eliminated by microglia to complete the establishment of neural circuits in the brain. The lack of synaptic regulation by microglia has been implicated in neurodevelopmental disorders such as autism, schizophrenia, and intellectual disability. Here we suggest that vaccinia-related kinase 2 (VRK2), which is expressed in microglia, may stimulate synaptic elimination by microglia. In VRK2-deficient mice (VRK2KO ), reduced numbers of presynaptic puncta within microglia were observed. Moreover, the numbers of presynaptic puncta and synapses were abnormally increased in VRK2KO mice by the second postnatal week. These differences did not persist into adulthood. Even though an increase in the number of synapses was normalized, adult VRK2KO mice showed behavioral defects in social behaviors, contextual fear memory, and spatial memory.
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Affiliation(s)
- Juhyun Lee
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Seunghyun Lee
- Department of Physiology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, Republic of Korea
| | - Young-Jae Ryu
- Research Division and Brain Research Core Facilities of Korea Brain Research Institute, Daegu, Republic of Korea
| | - Dohyun Lee
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Sangjune Kim
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea.,Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Ji-Young Seo
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Eunji Oh
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Sun Ha Paek
- Department of Neurosurgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Seung U Kim
- University of British Columbia, Vancouver, British Columbia, Canada
| | - Chang-Man Ha
- Research Division and Brain Research Core Facilities of Korea Brain Research Institute, Daegu, Republic of Korea
| | - Se-Young Choi
- Department of Physiology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, Republic of Korea
| | - Kyong-Tai Kim
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, Republic of Korea.,Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
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16
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Differential Oligomerization of the Deubiquitinases USP25 and USP28 Regulates Their Activities. Mol Cell 2019; 74:421-435.e10. [PMID: 30926243 DOI: 10.1016/j.molcel.2019.02.029] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 12/13/2018] [Accepted: 02/20/2019] [Indexed: 12/12/2022]
Abstract
Deubiquitinases have emerged as promising drug targets for cancer therapy. The two DUBs USP25 and USP28 share high similarity but vary in their cellular functions. USP28 is known for its tumor-promoting role, whereas USP25 is a regulator of the innate immune system and, recently, a role in tumorigenesis was proposed. We solved the structures of the catalytic domains of both proteins and established substantial differences in their activities. While USP28 is a constitutively active dimer, USP25 presents an auto-inhibited tetramer. Our data indicate that the activation of USP25 is not achieved through substrate or ubiquitin binding. USP25 cancer-associated mutations lead to activation in vitro and in vivo, thereby providing a functional link between auto-inhibition and the cancer-promoting role of the enzyme. Our work led to the identification of significant differences between USP25 and USP28 and provided the molecular basis for the development of new and highly specific anti-cancer drugs.
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17
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Ryu HG, Kim S, Lee S, Lee E, Kim HJ, Kim DY, Kim KT. HNRNP Q suppresses polyglutamine huntingtin aggregation by post-transcriptional regulation of vaccinia-related kinase 2. J Neurochem 2019; 149:413-426. [PMID: 30488434 DOI: 10.1111/jnc.14638] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/20/2018] [Accepted: 11/22/2018] [Indexed: 12/22/2022]
Abstract
Misfolded proteins with abnormal polyglutamine (polyQ) expansion cause neurodegenerative disorders, including Huntington's disease. Recently, it was found that polyQ aggregates accumulate as a result of vaccinia-related kinase 2 (VRK2)-mediated degradation of TCP-1 ring complex (TRiC)/chaperonin-containing TCP-1 (CCT), which has an essential role in the prevention of polyQ protein aggregation and cytotoxicity. The levels of VRK2 are known to be much higher in actively proliferating cells but are maintained at a low level in the brain via an unknown mechanism. Here, we found that basal levels of neuronal cell-specific VRK2 mRNA are maintained by post-transcriptional, rather than transcriptional, regulation. Moreover, heterogeneous nuclear ribonucleoprotein Q (HNRNP Q) specifically binds to the 3'untranslated region of VRK2 mRNA in neuronal cells to reduce the mRNA stability. As a result, we found a dramatic decrease in CCT4 protein levels in response to a reduction in HNRNP Q levels, which was followed by an increase in polyQ aggregation in human neuroblastoma cells and mouse cortical neurons. Taken together, these results provide new insights into how neuronal HNRNP Q decreases VRK2 mRNA stability and contributes to the prevention of Huntington's disease, while also identifying new prognostic markers of HD.
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Affiliation(s)
- Hye Guk Ryu
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Korea
| | - Sangjune Kim
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Korea.,Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Baltimore, Maryland, USA.,Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Saebom Lee
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Korea.,Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Baltimore, Maryland, USA.,Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Eunju Lee
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology (POSTECH), Pohang, Korea.,Advanced Bio Convergence Center, Pohang Technopark, Pohang, Korea
| | - Hyo-Jin Kim
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology (POSTECH), Pohang, Korea.,SL BIGEN, Seongnam, Korea
| | - Do-Yeon Kim
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Korea.,Department of Pharmacology, School of Dentistry, Kyungpook National University, Daegu, Korea.,Brain Science & Engineering Institute, Kyungpook National University, Daegu, Korea
| | - Kyong-Tai Kim
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Korea.,Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology (POSTECH), Pohang, Korea
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18
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Li M, Yue W. VRK2, a Candidate Gene for Psychiatric and Neurological Disorders. MOLECULAR NEUROPSYCHIATRY 2018; 4:119-133. [PMID: 30643786 PMCID: PMC6323383 DOI: 10.1159/000493941] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 09/20/2018] [Indexed: 12/20/2022]
Abstract
Recent large-scale genetic approaches, such as genome-wide association studies, have identified multiple genetic variations that contribute to the risk of mental illnesses, among which single nucleotide polymorphisms (SNPs) within or near the vaccinia related kinase 2 (VRK2) gene have gained consistent support for their correlations with multiple psychiatric and neurological disorders including schizophrenia (SCZ), major depressive disorder (MDD), and genetic generalized epilepsy. For instance, the genetic variant rs1518395 in VRK2 showed genome-wide significant associations with SCZ (35,476 cases and 46,839 controls, p = 3.43 × 10-8) and MDD (130,620 cases and 347,620 controls, p = 4.32 × 10-12) in European populations. This SNP was also genome-wide significantly associated with SCZ in Han Chinese population (12,083 cases and 24,097 controls, p = 3.78 × 10-13), and all associations were in the same direction of allelic effects. These studies highlight the potential roles of VRK2 in the central nervous system, and this gene therefore might be a good candidate to investigate the shared genetic and molecular basis between SCZ and MDD, as it is one of the few genes known to show genome-wide significant associations with both illnesses. Furthermore, the VRK2 gene was found to be involved in multiple other congenital deficits related to the malfunction of neurodevelopment, adding further support for the involvement of this gene in the pathogenesis of these neurological and psychiatric illnesses. While the precise function of VRK2 in these conditions remains unclear, preliminary evidence suggests that it may affect neuronal proliferation and migration via interacting with multiple essential signaling pathways involving other susceptibility genes/proteins for psychiatric disorders. Here, we have reviewed the recent progress of genetic and molecular studies of VRK2, with an emphasis on its role in psychiatric illnesses and neurological functions. We believe that attention to this important gene is necessary, and further investigations of VRK2 may provide hints into the underlying mechanisms of SCZ and MDD.
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Affiliation(s)
- Ming Li
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Kunming, China
- CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China
| | - Weihua Yue
- Peking University Sixth Hospital/Institute of Mental Health, Beijing, China
- Key Laboratory of Mental Health, Ministry of Health (Peking University) and National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, China
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19
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Liu B, Sureda-Gómez M, Zhen Y, Amador V, Reverter D. A quaternary tetramer assembly inhibits the deubiquitinating activity of USP25. Nat Commun 2018; 9:4973. [PMID: 30478318 PMCID: PMC6255862 DOI: 10.1038/s41467-018-07510-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 11/01/2018] [Indexed: 01/13/2023] Open
Abstract
USP25 deubiquitinating enzyme is a key member of the ubiquitin system, which acts as a positive regulator of the Wnt/β-catenin signaling by promoting the deubiquitination and stabilization of tankyrases. USP25 is characterized by the presence of a long insertion in the middle of the conserved catalytic domain. The crystal structure of USP25 displays an unexpected homotetrameric quaternary assembly that is directly involved in the inhibition of its enzymatic activity. The tetramer is assembled by the association of two dimers and includes contacts between the coiled-coil insertion domain and the ubiquitin-binding pocket at the catalytic domain, revealing a distinctive autoinhibitory mechanism. Biochemical and kinetic assays with dimer, tetramer and truncation constructs of USP25 support this mechanism, displaying higher catalytic activity in the dimer assembly. Moreover, the high stabilization of tankyrases in cultured cells by ectopic expression of a constitutive dimer of USP25 supports a biological relevance of this tetramerization/inhibition mechanism. USP25 is a deubiquitinating enzyme and a positive regulator of Wnt/β-catenin signaling. Here the authors present the crystal structure of USP25 in a tetrameric inactive state and their biochemical and kinetic assays support an USP25 autoinhibitory mechanism that is mediated through a dimer to tetramerization transition.
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Affiliation(s)
- Bing Liu
- Institut de Biotecnologia i de Biomedicina (IBB), Universitat Autònoma de Barcelona, Bellaterra, 08193, Spain.,Dept. de Bioquímica i Biologia Molecular, Serra Hunter Fellow, Universitat Autònoma de Barcelona, Bellaterra, 08193, Spain
| | - Marta Sureda-Gómez
- Institut de Investigacions Biomèdiques Agustí Pi i Sunyer (IDIBABS), Barcelona, 08036, Spain
| | - Yang Zhen
- Institut de Biotecnologia i de Biomedicina (IBB), Universitat Autònoma de Barcelona, Bellaterra, 08193, Spain.,Dept. de Bioquímica i Biologia Molecular, Serra Hunter Fellow, Universitat Autònoma de Barcelona, Bellaterra, 08193, Spain
| | - Virginia Amador
- Institut de Investigacions Biomèdiques Agustí Pi i Sunyer (IDIBABS), Barcelona, 08036, Spain
| | - David Reverter
- Institut de Biotecnologia i de Biomedicina (IBB), Universitat Autònoma de Barcelona, Bellaterra, 08193, Spain. .,Dept. de Bioquímica i Biologia Molecular, Serra Hunter Fellow, Universitat Autònoma de Barcelona, Bellaterra, 08193, Spain.
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20
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Jeong YH, Choi JH, Lee D, Kim S, Kim KT. Vaccinia-related kinase 2 modulates role of dysbindin by regulating protein stability. J Neurochem 2018; 147:609-625. [PMID: 30062698 DOI: 10.1111/jnc.14562] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 07/13/2018] [Accepted: 07/24/2018] [Indexed: 12/23/2022]
Abstract
Vaccinia-related kinase 2 (VRK2) is a serine/threonine kinase that belongs to the casein kinase 1 family. VRK2 has long been known for its relationship with neurodegenerative disorders such as schizophrenia. However, the role of VRK2 and the substrates associated with it are unknown. Dysbindin is known as one of the strong risk factors for schizophrenia. The expression of dysbindin is indeed significantly reduced in schizophrenia patients. Moreover, dysbindin is involved in neurite outgrowth and regulation of NMDA receptor signaling. Here, we first identified dysbindin as a novel interacting protein of VRK2 through immunoprecipitation. We hypothesized that dysbindin is phosphorylated by VRK2 and further that this phosphorylation plays an important role in the function of dysbindin. We show that VRK2 phosphorylates Ser 297 and Ser 299 of dysbindin using in vitro kinase assay. In addition, we found that VRK2-mediated phosphorylation of dysbindin enhanced ubiquitination of dysbindin and consequently resulted in the decrease in its protein stability through western blotting. Over-expression of VRK2 in human neuroblastoma (SH-SY5Y) cells reduced neurite outgrowth induced by retinoic acid. Furthermore, a phosphomimetic mutant of dysbindin alleviated neurite outgrowth and affected surface expression of N-methyl-d-aspartate 2A, a subunit of NMDA receptor in mouse hippocampal neurons. Together, our work reveals the regulation of dysbindin by VRK2, providing the association of these two proteins, which are commonly implicated in schizophrenia. OPEN SCIENCE BADGES: This article has received a badge for *Open Materials* because it provided all relevant information to reproduce the study in the manuscript. The complete Open Science Disclosure form for this article can be found at the end of the article. More information about the Open Practices badges can be found at https://cos.io/our-services/open-science-badges/.
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Affiliation(s)
- Young-Hun Jeong
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Korea
| | - Jung-Hyun Choi
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Korea
| | - Dohyun Lee
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Korea.,R&D Center, NovMetaPharma Co., Ltd., Pohang, 37668, Korea
| | - Sangjune Kim
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Korea.,Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Kyong-Tai Kim
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Korea.,Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, Korea
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21
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The structure and evolution of eukaryotic chaperonin-containing TCP-1 and its mechanism that folds actin into a protein spring. Biochem J 2018; 475:3009-3034. [DOI: 10.1042/bcj20170378] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 08/16/2018] [Accepted: 08/28/2018] [Indexed: 12/15/2022]
Abstract
Actin is folded to its native state in eukaryotic cytosol by the sequential allosteric mechanism of the chaperonin-containing TCP-1 (CCT). The CCT machine is a double-ring ATPase built from eight related subunits, CCT1–CCT8. Non-native actin interacts with specific subunits and is annealed slowly through sequential binding and hydrolysis of ATP around and across the ring system. CCT releases a folded but soft ATP-G-actin monomer which is trapped 80 kJ/mol uphill on the folding energy surface by its ATP-Mg2+/Ca2+ clasp. The energy landscape can be re-explored in the actin filament, F-actin, because ATP hydrolysis produces dehydrated and more compact ADP-actin monomers which, upon application of force and strain, are opened and closed like the elements of a spring. Actin-based myosin motor systems underpin a multitude of force generation processes in cells and muscles. We propose that the water surface of F-actin acts as a low-binding energy, directional waveguide which is recognized specifically by the myosin lever-arm domain before the system engages to form the tight-binding actomyosin complex. Such a water-mediated recognition process between actin and myosin would enable symmetry breaking through fast, low energy initial binding events. The origin of chaperonins and the subsequent emergence of the CCT–actin system in LECA (last eukaryotic common ancestor) point to the critical role of CCT in facilitating phagocytosis during early eukaryotic evolution and the transition from the bacterial world. The coupling of CCT-folding fluxes to the cell cycle, cell size control networks and cancer are discussed together with directions for further research.
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22
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Smurf1 restricts the antiviral function mediated by USP25 through promoting its ubiquitination and degradation. Biochem Biophys Res Commun 2018. [DOI: 10.1016/j.bbrc.2018.03.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Birendra Kc, May DG, Benson BV, Kim DI, Shivega WG, Ali MH, Faustino RS, Campos AR, Roux KJ. VRK2A is an A-type lamin-dependent nuclear envelope kinase that phosphorylates BAF. Mol Biol Cell 2017. [PMID: 28637768 PMCID: PMC5555652 DOI: 10.1091/mbc.e17-03-0138] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
By the use of comparative BioID of nuclear envelope (NE) proteins lamin A and Sun2, as well as a minimal inner nuclear membrane targeting motif, VRK2 is identified as a novel constituent of the NE. A-type lamins retain the transmembrane kinase VRK2 at the NE, where it phosphorylates and regulates the nuclear mobility of BAF. The nuclear envelope (NE) is critical for numerous fundamental cellular functions, and mutations in several NE constituents can lead to a heterogeneous spectrum of diseases. We used proximity biotinylation to uncover new constituents of the inner nuclear membrane (INM) by comparative BioID analysis of lamin A, Sun2 and a minimal INM-targeting motif. These studies identify vaccinia-related kinase-2 (VRK2) as a candidate constituent of the INM. The transmembrane VRK2A isoform is retained at the NE by association with A-type lamins. Furthermore, VRK2A physically interacts with A-type, but not B-type, lamins. Finally, we show that VRK2 phosphorylates barrier to autointegration factor (BAF), a small and highly dynamic chromatin-binding protein, which has roles including NE reassembly, cell cycle, and chromatin organization in cells, and subtly alters its nuclear mobility. Together these findings support the value of using BioID to identify unrecognized constituents of distinct subcellular compartments refractory to biochemical isolation and reveal VRK2A as a transmembrane kinase in the NE that regulates BAF.
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Affiliation(s)
- Birendra Kc
- Sanford Children's Health Research Center, Sanford Research, Sioux Falls, SD 57104
| | - Danielle G May
- Sanford Children's Health Research Center, Sanford Research, Sioux Falls, SD 57104
| | - Benjamin V Benson
- Sanford Children's Health Research Center, Sanford Research, Sioux Falls, SD 57104
| | - Dae In Kim
- Sanford Children's Health Research Center, Sanford Research, Sioux Falls, SD 57104
| | - Winnie G Shivega
- Sanford Children's Health Research Center, Sanford Research, Sioux Falls, SD 57104
| | - Manaal H Ali
- Sanford Children's Health Research Center, Sanford Research, Sioux Falls, SD 57104
| | - Randolph S Faustino
- Sanford Children's Health Research Center, Sanford Research, Sioux Falls, SD 57104.,Department of Pediatrics, Sanford School of Medicine, University of South Dakota, Sioux Falls, SD 57105
| | - Alexandre R Campos
- Proteomics Facility, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037
| | - Kyle J Roux
- Sanford Children's Health Research Center, Sanford Research, Sioux Falls, SD 57104 .,Department of Pediatrics, Sanford School of Medicine, University of South Dakota, Sioux Falls, SD 57105
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EXPRESSION OF UBIQUITIN SPECIFIC PEPTIDASE GENES IN IRE1 KNOCKDOWN U87 GLIOMA CELLS UPON GLUCOSE DEPRIVATION. BIOTECHNOLOGIA ACTA 2016. [DOI: 10.15407/biotech9.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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25
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Glycogen synthase kinase 3β suppresses polyglutamine aggregation by inhibiting Vaccinia-related kinase 2 activity. Sci Rep 2016; 6:29097. [PMID: 27377031 PMCID: PMC4932512 DOI: 10.1038/srep29097] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 06/09/2016] [Indexed: 12/19/2022] Open
Abstract
Huntington’s disease (HD) is a neurodegenerative disorder caused by an abnormal expansion of polyglutamine repeats in the N-terminal of huntingtin. The amount of aggregate-prone protein is controlled by various mechanisms, including molecular chaperones. Vaccinia-related kinase 2 (VRK2) is known to negatively regulate chaperonin TRiC, and VRK2-facilitated degradation of TRiC increases polyQ protein aggregation, which is involved in HD. We found that VRK2 activity was negatively controlled by glycogen synthase kinase 3β (GSK3β). GSK3β directly bound to VRK2 and inhibited the catalytic activity of VRK2 in a kinase activity-independent manner. Furthermore, GSK3β increased the stability of TRiC and decreased the formation of HttQ103-GFP aggregates by inhibiting VRK2. These results indicate that GSK3β signaling may be a regulatory mechanism of HD progression and suggest targets for further therapeutic trials for HD.
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26
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IRE-1α regulates expression of ubiquitin specific peptidases during hypoxic response in U87 glioma cells. ENDOPLASMIC RETICULUM STRESS IN DISEASES 2016. [DOI: 10.1515/ersc-2016-0003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
AbstractIRE-1α (inositol requiring enzyme-1α), the most evolutionarily conserved of the endoplasmic reticulum stress signaling pathways, is highly implicated in sustaining the proliferation of glioma cells and subsequent tumor growth, which is decreased by the inhibition of IRE-1α. To explore the IRE-1α mediated regulation of ubiquitin system in glioma cells, the expression of a subset of ubiquitin specific peptidases (USP) and of ubiquitin activating enzyme E1-like protein/autophagy related 7 (GSA7/ATG7) genes was studied, during hypoxic stress in wild type and U87 glioma cells with inhibited IRE-1α. Hypoxic treatment of wild type glioma cells leads to the up-regulation of USP25 and the concomitant downregulation of USP1, USP10, USP14, and GSA7 genes. USP4 and USP22 genes expression did not significantly change with hypoxic treatment. Inhibition of IRE-1α activity led to up-regulation of USP1, USP4, USP10, USP22, and USP25, while USP14 and GSA7 genes were down-regulated. Therefore, IRE-1α activity modifies substrate-targeting specificity to proteasome during hypoxic stress, which in turn can affect cell survival. Inhibition of IRE-1α correlates directly with deregulation of ubiquitin specific peptidases and GSA7 in a fashion that ultimately slows tumor growth.
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27
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Masoumi KC, Marfany G, Wu Y, Massoumi R. Putative role of SUMOylation in controlling the activity of deubiquitinating enzymes in cancer. Future Oncol 2016; 12:565-74. [PMID: 26777062 DOI: 10.2217/fon.15.320] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Deubiquitinating enzymes (DUBs) are specialized proteins that can recognize ubiquitinated proteins, and after direct interaction, deconjugate monomeric or polymeric ubiquitin chains, thus changing the fate of the substrates. This process is instrumental in mediating or changing downstream signaling pathways. Beside mutations and alterations in their expression levels, the activity and stability of deubiquitinating enzymes is vital for their function. SUMOylations consist of the conjugation of the small peptide SUMO to protein substrates which is very similar to ubiquitination in the mechanistic and machinery required. In this review, we will focus on how SUMOylation can regulate DUB enzymatic activity, stability or DUB interaction with partners and substrates, in cancer. Furthermore, we will discuss the impact of these recent findings in the identification of new potential tools for efficient anticancer treatment strategies.
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Affiliation(s)
- Katarzyna C Masoumi
- Department of Laboratory Medicine, Medicon Village, Lund University, 22381 Lund, Sweden
| | - Gemma Marfany
- Departament de Genètica, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain.,Institut de Biomedicina (IBUB), Universitat de Barcelona, 08007 Barcelona, Spain.,CIBERER, Instituto de Salud Carlos III, Barcelona, Spain
| | - Yingli Wu
- Department of Pathophysiology, Chemical Biology Division of Shanghai Universities E-Institutes, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Ramin Massoumi
- Department of Laboratory Medicine, Medicon Village, Lund University, 22381 Lund, Sweden
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