1
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Mao C, Li S, Che J, Liu D, Mao X, Rao H. The ubiquitin ligase UBR4 and the deubiquitylase USP5 modulate the stability of DNA mismatch repair protein MLH1. J Biol Chem 2024:107592. [PMID: 39032648 DOI: 10.1016/j.jbc.2024.107592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 06/29/2024] [Accepted: 07/10/2024] [Indexed: 07/23/2024] Open
Abstract
MLH1 plays a critical role in DNA mismatch repair and genome maintenance. MLH1 deficiency promotes cancer development and progression, but the mechanism underlying MLH1 regulation remains enigmatic. In this study, we demonstrate that MLH1 protein is degraded by the ubiquitin-proteasome system and have identified vital cis-elements and trans-factors involved in MLH1 turnover. We found that the region encompassing the amino acids 516-650 is crucial for MLH1 degradation. The mismatch repair protein PMS2 may shield MLH1 from degradation as it bind to the MLH1 segment key to its turnover. Furthermore, we have identified the E3 ubiquitin ligase UBR4 and the deubiquitylase USP5, which oppositely modulate MLH1 stability. In consistence, UBR4 or USP5 deficiency affects the cellular response to nucleotide analog 6-TG, supporting their roles in regulating mismatch repair. Our study has revealed important insights into the regulatory mechanisms underlying MLH1 proteolysis, critical to DNA mismatch repair related diseases.
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Affiliation(s)
- Chenyu Mao
- Department of Biochemistry, School of Medicine, Southern University of Science and Technology, Shenzhen, China, 518055
| | - Siqi Li
- Department of Biochemistry, School of Medicine, Southern University of Science and Technology, Shenzhen, China, 518055
| | - Jun Che
- Department of Biochemistry, School of Medicine, Southern University of Science and Technology, Shenzhen, China, 518055
| | - Dongzhou Liu
- Department of Rheumatology and Immunology, Shenzhen People's Hospital; The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong, China, 518055
| | - Xinliang Mao
- Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong, China, 511436.
| | - Hai Rao
- Department of Biochemistry, School of Medicine, Southern University of Science and Technology, Shenzhen, China, 518055; Key University Laboratory of Metabolism and Health of Guangdong, Southern University of Science and Technology, Shenzhen, China, 518055.
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2
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Wang J, Liu Y, Wu D, Tian C, Gao J, Yang Q, Hong X, Gu F, Zhang K, Hu Y, Xu S, Liu L, Zeng Y. OTUB1 Targets CHK1 for Deubiquitination and Stabilization to Facilitate Lung Cancer Progression and Radioresistance. Int J Radiat Oncol Biol Phys 2024; 119:1222-1233. [PMID: 38266782 DOI: 10.1016/j.ijrobp.2024.01.202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 12/26/2023] [Accepted: 01/08/2024] [Indexed: 01/26/2024]
Abstract
PURPOSE Radioresistance of lung cancer poses a significant challenge when it comes to the treatment of advanced, recurrent, and metastatic cases. Ovarian tumor domain ubiquitin aldehyde binding 1 (OTUB1) is a key member of the deubiquitinase OTU superfamily. This protein is involved in various cellular functions, including cell proliferation, iron death, lipid metabolism, and cytokine secretion as well as immune response processes. However, its specific role and molecular mechanism in lung cancer radioresistance remain to be clarified. METHODS AND MATERIALS The expression levels of OTUB1 in paired lung cancer tissues were determined by immunohistochemistry. In vitro and in vivo experiments were conducted to investigate the impact of OTUB1 on the growth and proliferation of lung cancer. Coimmunoprecipitation and Western blotting techniques were performed to examine the interaction between OTUB1 and CHK1. The DNA damage response was measured by comet tailing and immunofluorescence staining. KEGG pathways and Gene Ontology terms were analyzed based on RNA sequencing. RESULTS Our findings reveal a high frequency of OTUB1 overexpression, which is associated with an unfavorable prognosis in patients with lung cancer. Through comprehensive investigations, we demonstrate that OTUB1 depletion impairs the process of DNA damage repair and overcomes radioresistance. In terms of the underlying mechanism, our study uncovers that OTUB1 deubiquitinates and stabilizes CHK1, which enhances CHK1 stability, thereby regulating DNA damage and repair. Additionally, we identify CHK1 as the primary downstream effector responsible for mediating the functional effects exerted by OTUB1 specifically in lung cancer. Importantly, OTUB1 has the potential to be a valuable marker for improving the efficacy of radiation therapy for lung adenocarcinoma. CONCLUSIONS These findings unveil a novel role for OTUB1 in enhancing radioresistance by deubiquitination and stabilization of the expression of CHK1 in lung cancer and indicate that targeting OTUB1 holds great potential as an effective therapeutic approach for enhancing the efficacy of radiation therapy in lung cancer.
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Affiliation(s)
- Juanjuan Wang
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Precision Radiation Oncology, Wuhan, China; Institute of Radiation Oncology, Union Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, China
| | - Yuting Liu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Precision Radiation Oncology, Wuhan, China; Institute of Radiation Oncology, Union Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, China
| | - Di Wu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chen Tian
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Precision Radiation Oncology, Wuhan, China; Institute of Radiation Oncology, Union Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, China
| | - Jiaqi Gao
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Precision Radiation Oncology, Wuhan, China; Institute of Radiation Oncology, Union Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, China
| | - Qifan Yang
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Precision Radiation Oncology, Wuhan, China; Institute of Radiation Oncology, Union Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, China
| | - Xiaohua Hong
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Precision Radiation Oncology, Wuhan, China; Institute of Radiation Oncology, Union Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, China
| | - Feifei Gu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Precision Radiation Oncology, Wuhan, China; Institute of Radiation Oncology, Union Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, China
| | - Kai Zhang
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Precision Radiation Oncology, Wuhan, China; Institute of Radiation Oncology, Union Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, China
| | - Yue Hu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Precision Radiation Oncology, Wuhan, China; Institute of Radiation Oncology, Union Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, China
| | - Shuangbing Xu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Precision Radiation Oncology, Wuhan, China; Institute of Radiation Oncology, Union Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, China
| | - Li Liu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Precision Radiation Oncology, Wuhan, China; Institute of Radiation Oncology, Union Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, China.
| | - Yulan Zeng
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Precision Radiation Oncology, Wuhan, China; Institute of Radiation Oncology, Union Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, China.
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3
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Zhao X, Lv S, Li N, Zou Q, Sun L, Song T. YTHDF2 protein stabilization by the deubiquitinase OTUB1 promotes prostate cancer cell proliferation via PRSS8 mRNA degradation. J Biol Chem 2024; 300:107152. [PMID: 38462165 PMCID: PMC11002313 DOI: 10.1016/j.jbc.2024.107152] [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: 09/22/2023] [Revised: 02/23/2024] [Accepted: 03/04/2024] [Indexed: 03/12/2024] Open
Abstract
Prostate cancer is a leading cause of cancer-related mortality in males. Dysregulation of RNA adenine N-6 methylation (m6A) contributes to cancer malignancy. m6A on mRNA may affect mRNA splicing, turnover, transportation, and translation. m6A exerts these effects, at least partly, through dedicated m6A reader proteins, including YTH domain-containing family protein 2 (YTHDF2). YTHDF2 is necessary for development while its dysregulation is seen in various cancers, including prostate cancer. However, the mechanism underlying the dysregulation and function of YTHDF2 in cancer remains elusive. Here, we find that the deubiquitinase OUT domain-containing ubiquitin aldehyde-binding protein 1 (OTUB1) increases YTHDF2 protein stability by inhibiting its ubiquitination. With in vivo and in vitro ubiquitination assays, OTUB1 is shown to block ubiquitin transfer to YTHDF2 independent of its deubiquitinase activity. Furthermore, analysis of functional transcriptomic data and m6A-sequencing data identifies PRSS8 as a potential tumor suppressor gene. OTUB1 and YTHDF2 decrease mRNA and protein levels of PRSS8, which is a trypsin-like serine protease. Mechanistically, YTHDF2 binds PRSS8 mRNA and promotes its degradation in an m6A-dependent manner. Further functional study on cellular and mouse models reveals PRSS8 is a critical downstream effector of the OTUB1-YTHDF2 axis in prostate cancer. We find in prostate cancer cells, PRSS8 decreases nuclear β-catenin level through E-cadherin, which is independent of its protease activity. Collectively, our study uncovers a key regulator of YTHDF2 protein stability and establishes a functional OTUB1-YTHDF2-PRSS8 axis in prostate cancer.
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Affiliation(s)
- Xuefeng Zhao
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Suli Lv
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Neng Li
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qingli Zou
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lidong Sun
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Cell Architecture Research Institute, Huazhong University of Science and Technology, Wuhan, Hubei, China.
| | - Tanjing Song
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Cell Architecture Research Institute, Huazhong University of Science and Technology, Wuhan, Hubei, China.
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4
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Wu M, Sun L, Song T. OTUB1-mediated inhibition of ubiquitination: a growing list of effectors, multiplex mechanisms, and versatile functions. Front Mol Biosci 2024; 10:1261273. [PMID: 38264570 PMCID: PMC10803509 DOI: 10.3389/fmolb.2023.1261273] [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: 07/19/2023] [Accepted: 12/19/2023] [Indexed: 01/25/2024] Open
Abstract
Protein ubiquitination plays a pivotal role in protein homeostasis. Ubiquitination may regulate the stability, activity, protein-protein interaction, and localization of a protein. Ubiquitination is subject to regulation by two groups of counteracting enzymes, the E3 ubiquitin ligases and deubiquitinases. Consistently, deubiquitinases are involved in essentially all biological processes. OTUB1, an OTU-family deubiquitinase, is a critical regulator of development, cancer, DNA damage response, and immune response. OTUB1 antagonizes the ubiquitination of a wide-spectrum of proteins through at least two different mechanisms. Besides direct deubiquitination, OTUB1 can also inhibit ubiquitination by non-canonically blocking ubiquitin transfer from certain ubiquitin-conjugases (E2). In this review, we start with a general background of protein ubiquitination and deubiquitination. Next, we introduce the basic characteristics of OTUB1 and then elaborate on the updated biological functions of OTUB1. Afterwards, we discuss potential mechanisms underlying the versatility and specificity of OTUB1 functions. In the end, we discuss the perspective that OTUB1 can be a potential therapeutic target for cancer.
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Affiliation(s)
- Miaomiao Wu
- Deparment of Obstetrics and Gynecology, Shuyang Hospital of Traditional Chinese Medicine, Suqian, China
| | - Lidong Sun
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Cell Architecture Research Institute, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Tanjing Song
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Cell Architecture Research Institute, Huazhong University of Science and Technology, Wuhan, Hubei, China
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5
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Klonisch T, Logue SE, Hombach-Klonisch S, Vriend J. DUBing Primary Tumors of the Central Nervous System: Regulatory Roles of Deubiquitinases. Biomolecules 2023; 13:1503. [PMID: 37892185 PMCID: PMC10605193 DOI: 10.3390/biom13101503] [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: 09/07/2023] [Revised: 10/04/2023] [Accepted: 10/07/2023] [Indexed: 10/29/2023] Open
Abstract
The ubiquitin proteasome system (UPS) utilizes an orchestrated enzymatic cascade of E1, E2, and E3 ligases to add single or multiple ubiquitin-like molecules as post-translational modification (PTM) to proteins. Ubiquitination can alter protein functions and/or mark ubiquitinated proteins for proteasomal degradation but deubiquitinases (DUBs) can reverse protein ubiquitination. While the importance of DUBs as regulatory factors in the UPS is undisputed, many questions remain on DUB selectivity for protein targeting, their mechanism of action, and the impact of DUBs on the regulation of diverse biological processes. Furthermore, little is known about the expression and role of DUBs in tumors of the human central nervous system (CNS). In this comprehensive review, we have used publicly available transcriptional datasets to determine the gene expression profiles of 99 deubiquitinases (DUBs) from five major DUB families in seven primary pediatric and adult CNS tumor entities. Our analysis identified selected DUBs as potential new functional players and biomarkers with prognostic value in specific subtypes of primary CNS tumors. Collectively, our analysis highlights an emerging role for DUBs in regulating CNS tumor cell biology and offers a rationale for future therapeutic targeting of DUBs in CNS tumors.
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Affiliation(s)
- Thomas Klonisch
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
- Department of Pathology, Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
- Department of Medical Microbiology & Infectious Diseases, Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
- CancerCare Research Institute, CancerCare Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Susan E. Logue
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
- CancerCare Research Institute, CancerCare Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Sabine Hombach-Klonisch
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
- Department of Pathology, Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Jerry Vriend
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
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6
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Zhao Y, Ruan J, Li Z, Su X, Chen K, Lin Y, Cai Y, Wang P, Liu B, Schlüter D, Liang G, Wang X. OTUB1 inhibits breast cancer by non-canonically stabilizing CCN6. Clin Transl Med 2023; 13:e1385. [PMID: 37608493 PMCID: PMC10444971 DOI: 10.1002/ctm2.1385] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 08/10/2023] [Accepted: 08/14/2023] [Indexed: 08/24/2023] Open
Abstract
BACKGROUND CCN6 is a matricellular protein that critically regulates the tumourigenesis and progression of breast cancer. Although the tumour-suppressive function of CCN6 has been extensively studied, molecular mechanisms regulating protein levels of CCN6 remain largely unclear. This study aims to investigate the regulation of CCN6 by ubiquitination and deubiquitinating enzymes (DUBs) in breast cancer. METHODS A screening assay was performed to identify OTUB1 as the DUB for CCN6. Various biochemical methods were applied to elucidate the molecular mechanism of OTUB1 in the regulation of CCN6. The role of OTUB1-CCN6 interaction in breast cancer was studied with cell experiments and the allograft model. The correlation of OTUB1 and CCN6 in human breast cancer was determined by immunohistochemistry and Western blot. RESULTS We found that CCN6 protein levels were controlled by the ubiquitin-proteasome system. The K48 ubiquitination and degradation of CCN6 was inhibited by OTUB1, which directly interacted with CCN6 through its linker domain. Furthermore, OTUB1 inhibited the ubiquitination of CCN6 in a non-canonical manner. Deletion of OTUB1, concomitant with reduced CCN6 abundance, increased the migration, proliferation and viability of breast cancer cells. Supplementation of CCN6 abolished the effect of OTUB1 deletion on breast cancer. Importantly, OTUB1 expression was downregulated in human breast cancer and positively correlated with CCN6 levels. CONCLUSION This study identified OTUB1 as a novel regulator of CCN6 in breast cancer.
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Affiliation(s)
- Ying Zhao
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouChina
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health)Department of Neurological RehabilitationThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhouChina
| | - Jing Ruan
- Department of PathologyThe First Affiliated HospitalWenzhou Medical UniversityWenzhouChina
| | - Zhongding Li
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouChina
| | - Xian Su
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouChina
| | - Kangmin Chen
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouChina
| | - Yimin Lin
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouChina
| | - Yuepiao Cai
- School of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouChina
| | - Peng Wang
- School of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouChina
| | - Baohua Liu
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health)Department of Neurological RehabilitationThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhouChina
| | - Dirk Schlüter
- Institute of Medical Microbiology and Hospital EpidemiologyHannover Medical SchoolHannoverGermany
- Cluster of Excellence RESIST (EXC 2155)Hannover Medical SchoolHannoverGermany
| | - Guang Liang
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouChina
- School of Pharmaceutical SciencesHangzhou Medical CollegeHangzhouChina
| | - Xu Wang
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouChina
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health)Department of Neurological RehabilitationThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhouChina
- Institute of Medical Microbiology and Hospital EpidemiologyHannover Medical SchoolHannoverGermany
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7
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Dong L, Jiang H, Kang Z, Guan M. Biomarkers for chemotherapy and drug resistance in the mismatch repair pathway. Clin Chim Acta 2023; 544:117338. [PMID: 37060988 DOI: 10.1016/j.cca.2023.117338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 04/09/2023] [Accepted: 04/10/2023] [Indexed: 04/17/2023]
Abstract
Drugs targeting DNA repair have developed rapidly in cancer therapy, and numerous inhibitors have already been utilized in preclinical and clinical stages. To optimize the selection of patients for treatment, it is essential to discover biomarkers to anticipate chemotherapy response. The DNA mismatch repair (MMR) pathway is closely correlated with cancer susceptibility and plays an important role in the occurrence and development of cancers. Here, we give a concise introduction of the MMR genes and focus on the potential biomarkers of chemotherapeutic response and resistance. It has been clarified that the status of MMR may affect the outcome of chemotherapy. However, the specific underlying mechanisms as well as contradictory results continue to raise considerable controversy and concern. In this review, we summarize the current literature to provide a general overview.
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Affiliation(s)
- Liu Dong
- Department of Laboratory Medicine, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai, People's Republic of China
| | - Haoqin Jiang
- Department of Laboratory Medicine, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai, People's Republic of China
| | - Zhihua Kang
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, USA.
| | - Ming Guan
- Department of Laboratory Medicine, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai, People's Republic of China.
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8
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Abildgaard AB, Nielsen SV, Bernstein I, Stein A, Lindorff-Larsen K, Hartmann-Petersen R. Lynch syndrome, molecular mechanisms and variant classification. Br J Cancer 2023; 128:726-734. [PMID: 36434153 PMCID: PMC9978028 DOI: 10.1038/s41416-022-02059-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 10/31/2022] [Accepted: 11/02/2022] [Indexed: 11/27/2022] Open
Abstract
Patients with the heritable cancer disease, Lynch syndrome, carry germline variants in the MLH1, MSH2, MSH6 and PMS2 genes, encoding the central components of the DNA mismatch repair system. Loss-of-function variants disrupt the DNA mismatch repair system and give rise to a detrimental increase in the cellular mutational burden and cancer development. The treatment prospects for Lynch syndrome rely heavily on early diagnosis; however, accurate diagnosis is inextricably linked to correct clinical interpretation of individual variants. Protein variant classification traditionally relies on cumulative information from occurrence in patients, as well as experimental testing of the individual variants. The complexity of variant classification is due to (1) that variants of unknown significance are rare in the population and phenotypic information on the specific variants is missing, and (2) that individual variant testing is challenging, costly and slow. Here, we summarise recent developments in high-throughput technologies and computational prediction tools for the assessment of variants of unknown significance in Lynch syndrome. These approaches may vastly increase the number of interpretable variants and could also provide important mechanistic insights into the disease. These insights may in turn pave the road towards developing personalised treatment approaches for Lynch syndrome.
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Affiliation(s)
- Amanda B Abildgaard
- The Linderstrøm-Lang Centre for Protein Science, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Sofie V Nielsen
- The Linderstrøm-Lang Centre for Protein Science, Department of Biology, University of Copenhagen, Copenhagen, Denmark.
| | - Inge Bernstein
- Department of Surgical Gastroenterology, Aalborg University Hospital, Aalborg, Denmark
- Institute of Clinical Medicine, Aalborg University Hospital, Aalborg University, Aalborg, Denmark
| | - Amelie Stein
- The Linderstrøm-Lang Centre for Protein Science, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Kresten Lindorff-Larsen
- The Linderstrøm-Lang Centre for Protein Science, Department of Biology, University of Copenhagen, Copenhagen, Denmark.
| | - Rasmus Hartmann-Petersen
- The Linderstrøm-Lang Centre for Protein Science, Department of Biology, University of Copenhagen, Copenhagen, Denmark.
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9
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Deng H, Jia S, Tang J, Rong F, Xu C, Chen X, Wang Z, Zhu C, Sun X, Liao Q, Liu W, Li W, Xiao W, Liu X. SET7 methylates the deubiquitinase OTUB1 at Lys 122 to impair its binding to E2 enzyme UBC13 and relieve its suppressive role on ferroptosis. J Biol Chem 2023; 299:103054. [PMID: 36822329 PMCID: PMC10040876 DOI: 10.1016/j.jbc.2023.103054] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 02/11/2023] [Accepted: 02/13/2023] [Indexed: 02/23/2023] Open
Abstract
The deubiquitinating enzyme OTUB1 possesses canonical deubiquitinase (DUB) activity and noncanonical, catalytic-independent activity, which has been identified as an essential regulator of diverse physiological processes. Posttranslational modifications of OTUB1 affect both its DUB activity and its noncanonical activity of binding to the E2 ubiquitin-conjugation enzyme UBC13, but further investigation is needed to characterize the full inventory of modifications to OTUB1. Here, we demonstrate that SET7, a lysine monomethylase, directly interacts with OTUB1 to catalyze OTUB1 methylation at lysine 122. This modification does not affect DUB activity of OTUB1 but impairs its noncanonical activity, binding to UBC13. Moreover, we found using cell viability analysis and intracellular reactive oxygen species assay that SET7-mediated methylation of OTUB1 relieves its suppressive role on ferroptosis. Notably, the methylation-mimic mutant of OTUB1 not only loses the ability to bind to UBC13 but also relieves its suppressive role on Tert-Butyl hydroperoxide-induced cell death and Cystine starvation/Erastin-induced cellular reactive oxygen species. Collectively, our data identify a novel modification of OTUB1 that is critical for inhibiting its noncanonical activity.
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Affiliation(s)
- Hongyan Deng
- College of Life Science, Wuhan University, Wuhan, P. R. China; State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R. China
| | - Shuke Jia
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R. China; University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Jinhua Tang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R. China; University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Fangjing Rong
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R. China; University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Chenxi Xu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R. China; University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Xiaoyun Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R. China; University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Zixuan Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R. China; University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Chunchun Zhu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R. China; University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Xueyi Sun
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R. China; University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Qian Liao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R. China; University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Wen Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R. China; University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Wenhua Li
- College of Life Science, Wuhan University, Wuhan, P. R. China.
| | - Wuhan Xiao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R. China; University of Chinese Academy of Sciences, Beijing, P. R. China; Hubei Hongshan Laboratory, Wuhan, P. R. China; The Innovation of Seed Design, Chinese Academy of Sciences, Wuhan, P. R. China.
| | - Xing Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R. China; University of Chinese Academy of Sciences, Beijing, P. R. China; Hubei Hongshan Laboratory, Wuhan, P. R. China.
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10
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Seo SU, Woo SM, Kim MW, Lee EW, Min KJ, Kwon TK. Phosphorylation of OTUB1 at Tyr 26 stabilizes the mTORC1 component, Raptor. Cell Death Differ 2023; 30:82-93. [PMID: 35927303 PMCID: PMC9883261 DOI: 10.1038/s41418-022-01047-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 06/18/2022] [Accepted: 07/06/2022] [Indexed: 02/01/2023] Open
Abstract
Raptor plays a critical role in mTORC1 signaling. High expression of Raptor is associated with resistance of cancer cells to PI3K/mTOR inhibitors. Here, we found that OTUB1-stabilized Raptor in a non-canonical manner. Using biochemical assays, we found that the tyrosine 26 residue (Y26) of OTUB1 played a critical role in the interaction between OTUB1 and Raptor. Furthermore, non-receptor tyrosine kinases (Src and SRMS kinases) induced phosphorylation of OTUB1 at Y26, which stabilized Raptor. Interestingly, phosphorylation of OTUB1 at Y26 did not affect the stability of other OTUB1-targeted substrates. However, dephosphorylation of OTUB1 destabilized Raptor and sensitized cancer cells to anti-cancer drugs via mitochondrial reactive oxygen species-mediated mitochondrial dysfunction. Furthermore, we detected high levels of phospho-OTUB1 and Raptor in samples of patients with renal clear carcinoma. Our results suggested that regulation of OTUB1 phosphorylation may be an effective and selective therapeutic target for treating cancers via down-regulation of Raptor.
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Affiliation(s)
- Seung Un Seo
- Department of Immunology, School of Medicine, Keimyung University, Daegu, 42601, South Korea
| | - Seon Min Woo
- Department of Immunology, School of Medicine, Keimyung University, Daegu, 42601, South Korea
| | - Min Wook Kim
- Metabolic Regulation Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, South Korea
| | - Eun-Woo Lee
- Metabolic Regulation Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, South Korea.
- Department of Functional Genomics, University of Science and Technology (UST), Daejeon, 34141, South Korea.
| | - Kyoung-Jin Min
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), Daegu, 41061, South Korea.
| | - Taeg Kyu Kwon
- Department of Immunology, School of Medicine, Keimyung University, Daegu, 42601, South Korea.
- Center for Forensic Pharmaceutical Science, Keimyung University, Daegu, 42601, South Korea.
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11
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Galindo-Hernández O, García-Salazar LA, García-González VG, Díaz-Molina R, Vique-Sánchez JL. Potential Inhibitors of The OTUB1 Catalytic Site to Develop an Anti-Cancer Drug Using In-Silico Approaches. Rep Biochem Mol Biol 2023; 11:684-693. [PMID: 37131907 PMCID: PMC10149122 DOI: 10.52547/rbmb.11.4.684] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 06/13/2022] [Indexed: 05/04/2023]
Abstract
Background : Cancer continues worldwide. It has been reported that OTUB1, a cysteine protease, plays a critical role in a variety of tumors and is strongly related to tumor proliferation, migration, and clinical prognosis by its functions on deubiquitination. Drug advances continue against new therapeutic targets. In this study we used OTUB1 to develop a specific pharmacological treatment to regulate deubiquitination by OTUB1. The aim of this research is to regulate OTUB1 functions. Methods By molecular docking in a specific potential OTUB1 interaction site between Asp88, Cys91, and His26 amino acids, using a chemical library of over 500,000 compounds, we selected potential inhibitors of the OTUB1 catalytic site. Results Ten compounds (OT1 - OT10) were selected by molecular docking to develop a new anti-cancer drug to decrease OTUB1 functions in cancer processes. Conclusion OT1 - OT10 compounds could be interacting in the potential site between Asp88, Cys91, and His265 amino acids in OTUB1. This site is necessary for the deubiquitinating function of OTUB1. Therefore, this study shows another way to attack cancer.
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Affiliation(s)
- Octavio Galindo-Hernández
- Autonomous University of Baja California, School of Medicine Campus Mexicali, Mexicali, BC, México.
- Corresponding author: José Luis Vique-Sánchez; Tel: +52 5549928664; E-mail: .
| | | | | | - Raúl Díaz-Molina
- Autonomous University of Baja California, School of Medicine Campus Mexicali, Mexicali, BC, México.
| | - José Luis Vique-Sánchez
- Autonomous University of Baja California, School of Medicine Campus Mexicali, Mexicali, BC, México.
- Corresponding author: José Luis Vique-Sánchez; Tel: +52 5549928664; E-mail: .
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12
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Han X, Ren C, Lu C, Qiao P, Yang T, Yu Z. Deubiquitination of MYC by OTUB1 contributes to HK2 mediated glycolysis and breast tumorigenesis. Cell Death Differ 2022; 29:1864-1873. [PMID: 35296795 PMCID: PMC9433372 DOI: 10.1038/s41418-022-00971-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 02/24/2022] [Accepted: 02/24/2022] [Indexed: 02/07/2023] Open
Abstract
MYC as a transcriptional factor plays a crucial role in breast cancer progression. However, the mechanisms underlying MYC deubiquitination in breast cancer are not well defined. Here, we report that OTUB1 is responsible for MYC deubiquitination. OTUB1 could directly deubiquitinate MYC at K323 site, which blocks MYC protein degradation. Moreover, OTUB1 mediated MYC protein stability is also confirmed in OTUB1-knockout mice. Stabilized MYC by OTUB1 promotes its transcriptional activity and induces HK2 expression, which leads to enhance aerobic glycolysis. Therefore, OTUB1 promotes breast tumorigenesis in vivo and in vitro via blocking MYC protein degradation. Taken together, our data identify OTUB1 as a new deubiquitination enzyme for MYC protein degradation, which provides a potential target for breast cancer treatment.
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Affiliation(s)
- Xue Han
- Department of Reproductive Medicine, Affiliated Hospital of Weifang Medical University, Weifang, Shandong Province, P.R. China
| | - Chune Ren
- Department of Reproductive Medicine, Affiliated Hospital of Weifang Medical University, Weifang, Shandong Province, P.R. China
| | - Chao Lu
- Department of Reproductive Medicine, Affiliated Hospital of Weifang Medical University, Weifang, Shandong Province, P.R. China
| | - Pengyun Qiao
- Department of Reproductive Medicine, Affiliated Hospital of Weifang Medical University, Weifang, Shandong Province, P.R. China
| | - Tingting Yang
- Department of Reproductive Medicine, Affiliated Hospital of Weifang Medical University, Weifang, Shandong Province, P.R. China
| | - Zhenhai Yu
- Department of Reproductive Medicine, Affiliated Hospital of Weifang Medical University, Weifang, Shandong Province, P.R. China.
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13
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Firnau MB, Brieger A. CK2 and the Hallmarks of Cancer. Biomedicines 2022; 10:biomedicines10081987. [PMID: 36009534 PMCID: PMC9405757 DOI: 10.3390/biomedicines10081987] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 08/08/2022] [Accepted: 08/10/2022] [Indexed: 11/29/2022] Open
Abstract
Cancer is a leading cause of death worldwide. Casein kinase 2 (CK2) is commonly dysregulated in cancer, impacting diverse molecular pathways. CK2 is a highly conserved serine/threonine kinase, constitutively active and ubiquitously expressed in eukaryotes. With over 500 known substrates and being estimated to be responsible for up to 10% of the human phosphoproteome, it is of significant importance. A broad spectrum of diverse types of cancer cells has been already shown to rely on disturbed CK2 levels for their survival. The hallmarks of cancer provide a rationale for understanding cancer’s common traits. They constitute the maintenance of proliferative signaling, evasion of growth suppressors, resisting cell death, enabling of replicative immortality, induction of angiogenesis, the activation of invasion and metastasis, as well as avoidance of immune destruction and dysregulation of cellular energetics. In this work, we have compiled evidence from the literature suggesting that CK2 modulates all hallmarks of cancer, thereby promoting oncogenesis and operating as a cancer driver by creating a cellular environment favorable to neoplasia.
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14
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Liu X, Deng H, Tang J, Wang Z, Zhu C, Cai X, Rong F, Chen X, Sun X, Jia S, Ouyang G, Li W, Xiao W. OTUB1 augments hypoxia signaling via its non-canonical ubiquitination inhibition of HIF-1α during hypoxia adaptation. Cell Death Dis 2022; 13:560. [PMID: 35732631 PMCID: PMC9217984 DOI: 10.1038/s41419-022-05008-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 05/27/2022] [Accepted: 06/08/2022] [Indexed: 01/21/2023]
Abstract
As a main regulator of cellular responses to hypoxia, the protein stability of hypoxia-inducible factor (HIF)-1α is strictly controlled by oxygen tension dependent of PHDs-catalyzed protein hydroxylation and pVHL complex-mediated proteasomal degradation. Whether HIF-1α protein stability as well as its activity can be further regulated under hypoxia is not well understood. In this study, we found that OTUB1 augments hypoxia signaling independent of PHDs/VHL and FIH. OTUB1 binds to HIF-1α and depletion of OTUB1 reduces endogenous HIF-1α protein under hypoxia. In addition, OTUB1 inhibits K48-linked polyubiquitination of HIF-1α via its non-canonical inhibition of ubiquitination activity. Furthermore, OTUB1 promotes hypoxia-induced glycolytic reprogramming for cellular metabolic adaptation. These findings define a novel regulation of HIF-1α under hypoxia and demonstrate that OTUB1-mediated HIF-1α stabilization positively regulates HIF-1α transcriptional activity and benefits cellular hypoxia adaptation.
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Affiliation(s)
- Xing Liu
- grid.429211.d0000 0004 1792 6029State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, PR China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, Beijing, 100049 PR China ,grid.9227.e0000000119573309The Innovation of Seed Design, Chinese Academy of Sciences, Wuhan, 430072 PR China ,Hubei Hongshan Laboratory, Wuhan, 430070 PR China
| | - Hongyan Deng
- grid.49470.3e0000 0001 2331 6153College of Life Science, Wuhan University, Wuhan, 430072 PR China ,grid.49470.3e0000 0001 2331 6153Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, 430072 PR China
| | - Jinhua Tang
- grid.429211.d0000 0004 1792 6029State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, PR China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, Beijing, 100049 PR China
| | - Zixuan Wang
- grid.429211.d0000 0004 1792 6029State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, PR China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, Beijing, 100049 PR China
| | - Chunchun Zhu
- grid.429211.d0000 0004 1792 6029State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, PR China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, Beijing, 100049 PR China
| | - Xiaolian Cai
- grid.429211.d0000 0004 1792 6029State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, PR China ,grid.9227.e0000000119573309The Innovation of Seed Design, Chinese Academy of Sciences, Wuhan, 430072 PR China
| | - Fangjing Rong
- grid.429211.d0000 0004 1792 6029State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, PR China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, Beijing, 100049 PR China
| | - Xiaoyun Chen
- grid.429211.d0000 0004 1792 6029State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, PR China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, Beijing, 100049 PR China
| | - Xueyi Sun
- grid.429211.d0000 0004 1792 6029State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, PR China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, Beijing, 100049 PR China
| | - Shuke Jia
- grid.429211.d0000 0004 1792 6029State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, PR China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, Beijing, 100049 PR China
| | - Gang Ouyang
- grid.429211.d0000 0004 1792 6029State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, PR China ,grid.9227.e0000000119573309The Innovation of Seed Design, Chinese Academy of Sciences, Wuhan, 430072 PR China
| | - Wenhua Li
- grid.49470.3e0000 0001 2331 6153College of Life Science, Wuhan University, Wuhan, 430072 PR China ,grid.49470.3e0000 0001 2331 6153Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, 430072 PR China
| | - Wuhan Xiao
- grid.429211.d0000 0004 1792 6029State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, PR China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, Beijing, 100049 PR China ,grid.9227.e0000000119573309The Innovation of Seed Design, Chinese Academy of Sciences, Wuhan, 430072 PR China ,Hubei Hongshan Laboratory, Wuhan, 430070 PR China
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15
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Liao Y, Yang M, Wang K, Wang Y, Zhong B, Jiang N. Deubiquitinating enzyme OTUB1 in immunity and cancer: Good player or bad actor? Cancer Lett 2022; 526:248-258. [PMID: 34875341 DOI: 10.1016/j.canlet.2021.12.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 12/01/2021] [Accepted: 12/02/2021] [Indexed: 12/21/2022]
Abstract
OTU domain-containing ubiquitin aldehyde-binding proteins 1 (OTUB1) is the most important element of the deubiquitinase OTU superfamily, which has been identified as an essential regulator of diverse physiological processes, such as DNA damage repair and cytokines secretion. Recently, we found that the pro-carcinogenesis role of OTUB1 and the relationship between OTUB1 and immune response have gradually become the research hot-spot. OTUB1 regulates NK/CD8 T cell activation, autoimmune diseases, PD-L1 mediated immune evasion, viral or bacterial infection related immune response and the occurrence and progression of various cancers via deubiquitinating and stabilizing related proteins. This review provides a comprehensive description about the role and regulatory axis of OTUB1. We can explore the balance between immune response and defense via regulating the level of OTUB1, and targeting OTUB1 might restrain the progression of cancers. This review highlights the experimental evidence that OTUB1 is a feasible and potential therapeutic target against various cancers progression and immune diseases or disorder.
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Affiliation(s)
- Yihao Liao
- Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, 300211, China
| | - Mengyue Yang
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150000, China
| | - Keke Wang
- Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, 300211, China
| | - Youzhi Wang
- Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, 300211, China
| | - Boqiang Zhong
- Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, 300211, China
| | - Ning Jiang
- Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, 300211, China.
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16
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Snyder NA, Silva GM. Deubiquitinating enzymes (DUBs): Regulation, homeostasis, and oxidative stress response. J Biol Chem 2021; 297:101077. [PMID: 34391779 PMCID: PMC8424594 DOI: 10.1016/j.jbc.2021.101077] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 08/10/2021] [Accepted: 08/11/2021] [Indexed: 12/17/2022] Open
Abstract
Ubiquitin signaling is a conserved, widespread, and dynamic process in which protein substrates are rapidly modified by ubiquitin to impact protein activity, localization, or stability. To regulate this process, deubiquitinating enzymes (DUBs) counter the signal induced by ubiquitin conjugases and ligases by removing ubiquitin from these substrates. Many DUBs selectively regulate physiological pathways employing conserved mechanisms of ubiquitin bond cleavage. DUB activity is highly regulated in dynamic environments through protein-protein interaction, posttranslational modification, and relocalization. The largest family of DUBs, cysteine proteases, are also sensitive to regulation by oxidative stress, as reactive oxygen species (ROS) directly modify the catalytic cysteine required for their enzymatic activity. Current research has implicated DUB activity in human diseases, including various cancers and neurodegenerative disorders. Due to their selectivity and functional roles, DUBs have become important targets for therapeutic development to treat these conditions. This review will discuss the main classes of DUBs and their regulatory mechanisms with a particular focus on DUB redox regulation and its physiological impact during oxidative stress.
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Affiliation(s)
- Nathan A Snyder
- Department of Biology, Duke University, Durham, North Carolina, USA
| | - Gustavo M Silva
- Department of Biology, Duke University, Durham, North Carolina, USA.
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