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Wu S, Lei X, Zhu Z, Liu Z, Gao Y, Wei J, Qin Q. Grouper OTUB1 and OTUB2 promote red-spotted grouper nervous necrosis virus (RGNNV) replication by inhibiting the host innate immune response. FISH & SHELLFISH IMMUNOLOGY 2024; 151:109715. [PMID: 38909637 DOI: 10.1016/j.fsi.2024.109715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 06/19/2024] [Accepted: 06/19/2024] [Indexed: 06/25/2024]
Abstract
Red-spotted grouper nervous necrosis virus (RGNNV) is a major viral pathogen of grouper and is able to antagonize interferon responses through multiple strategies, particularly evading host immune responses by inhibiting interferon responses. Ovarian tumor (OTU) family proteins are an important class of DUBs and the underlying mechanisms used to inhibit interferon pathway activation are unknown. In the present study, primers were designed based on the transcriptome data, and the ovarian tumor (OTU) domain-containing ubiquitin aldehyde-binding protein 1 (OTUB1) and OTUB2 genes of Epinephelus coioides (EcOTUB1 and EcOTUB2) were cloned and characterized. The homology alignment showed that both EcOTUB1 and EcOTUB2 were most closely related to E. lanceolatus with 98 % identity. Both EcOTUB1 and EcOTUB2 were distributed to varying degrees in grouper tissues, and the transcript levels were significantly up-regulated following RGNNV stimulation. Both EcOTUB1 and EcOTUB2 promoted replication of RGNNV in vitro, and inhibited the promoter activities of interferon stimulated response element (ISRE), nuclear transcription factors kappaB (NF-κB) and IFN3, and the expression levels of interferon related genes and proinflammatory factors. Co-immunoprecipitation experiments showed that both EcOTUB1 and EcOTUB2 could interact with TRAF3 and TRAF6, indicating that EcOTUB1 and EcOTUB2 may play important roles in interferon signaling pathway. The results will provide a theoretical reference for the development of novel disease prevention and control techniques.
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Affiliation(s)
- Siting Wu
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China; Nansha-South China Agricultural University Fishery Research Institute, Guangzhou, Guangzhou, 511400, China
| | - Xiaoxia Lei
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China; Nansha-South China Agricultural University Fishery Research Institute, Guangzhou, Guangzhou, 511400, China
| | - Zheng Zhu
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China; Nansha-South China Agricultural University Fishery Research Institute, Guangzhou, Guangzhou, 511400, China
| | - Zetian Liu
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China; Nansha-South China Agricultural University Fishery Research Institute, Guangzhou, Guangzhou, 511400, China
| | - Yanfei Gao
- Guangdong Haiyuan Agricultural Technology Co., Ltd, Yangjiang, 529800, China
| | - Jingguang Wei
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China; Nansha-South China Agricultural University Fishery Research Institute, Guangzhou, Guangzhou, 511400, China.
| | - Qiwei Qin
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China; Nansha-South China Agricultural University Fishery Research Institute, Guangzhou, Guangzhou, 511400, China.
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Guo C, Zhang M, Jin X, Zhu C, Qian J, Tao M. Exploring the regulatory role of FBXL19-AS1 in triple-negative breast cancer through the miR-378a-3p/OTUB2 axis. Cell Biochem Funct 2024; 42:e4020. [PMID: 38702967 DOI: 10.1002/cbf.4020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 04/01/2024] [Accepted: 04/13/2024] [Indexed: 05/06/2024]
Abstract
The regulatory potential of long noncoding RNA (lncRNA) FBXL19-AS1 has been highlighted in various cancers, but its effect on triple-negative breast cancer (TNBC) remains unclear. Here, we aimed to elucidate the role of FBXL19-AS1 in TNBC and its underlying mechanism. RT-qPCR was employed to detect the expressions of FBXL19-AS1 and miR-378a-3p in tissues and cells. Immunohistochemical staining and western blot were utilized to detect the expression levels of proteins. Cell activities were detected using flow cytometry, CCK-8, and transwell assay. Dual-luciferase reporter and RNA immunoprecipitation (RIP) assays were deployed to investigate interactions of different molecules. Protein-protein interaction (PPI) network, gene ontology (GO), and Kyoto encyclopedia of genes and genomes (KEGG) pathways were used to analyze the downstream pathway. In vivo xenograft model was conducted to detect the effect of FBXL19-AS1 on tumor growth. FBXL19-AS1 was overexpressed in TNBC tissues and cell lines compared with counterparts. FBXL19-AS1 knockdown suppressed TNBC cell activities, whereas its overexpression exhibited the opposite effect. Mechanistically, FBXL19-AS1 was found to interact with miR-378a-3p. Further analysis revealed that miR-378a-3p exerted tumor-suppressive effects in TNBC cells. Additionally, miR-378a-3p targeted and downregulated the expression of ubiquitin aldehyde binding 2 (OTUB2), a deubiquitinase associated with TNBC progression. In vivo experiments substantiated the inhibitory effects of FBXL19-AS1 knockdown on TNBC tumorigenesis, and a miR-378a-3p inhibitor partially rescued these effects. The downstream pathway of the miR-378a-3p/OTUB2 axis was explored, revealing connections with proteins involved in modifying other proteins, removing ubiquitin molecules, and influencing signaling pathways, including the Hippo signaling pathway. Western blot analysis confirmed changes in YAP and TAZ expression levels, indicating a potential regulatory network. In summary, FBXL19-AS1 promotes exacerbation in TNBC by suppressing miR-378a-3p, leading to increased OTUB2 expression. The downstream mechanism may be related to the Hippo signaling pathway. These findings propose potential therapeutic targets for TNBC treatment.
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Affiliation(s)
- Chenxu Guo
- Department of Oncology, The First Affiliated Hospital of Soochow University, Suzhou, China
- Department of Oncology, Dushu Lake Hospital Affiliated to Soochow University, Suzhou, China
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Mingliang Zhang
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Xin Jin
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Chao Zhu
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Jun Qian
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Min Tao
- Department of Oncology, The First Affiliated Hospital of Soochow University, Suzhou, China
- Department of Oncology, Dushu Lake Hospital Affiliated to Soochow University, Suzhou, China
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Liu F, Zhang Y, Xia X, Han J, Cao L. Honokiol induces ferroptosis in ovarian cancer cells through the regulation of YAP by OTUB2. J Obstet Gynaecol Res 2024; 50:864-872. [PMID: 38480480 DOI: 10.1111/jog.15922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 03/03/2024] [Indexed: 04/30/2024]
Abstract
BACKGROUND Ovarian cancer (OVCA) is prevalent in female reproductive organs. Despite recent advances, clinical outcomes remain poor, warranting fresh treatment avenues. Honokiol has an inhibitory effect on proliferation, invasion, and survival of cancer cells in vitro and in vivo. Therefore, this study intended to explore specific molecular mechanism by which honokiol affected OVCA progression. METHODS Bioinformatics analyzed the drug honokiol that bound to OTU deubiquitinase, ubiquitin aldehyde binding 2 (OTUB2). Cellular thermal shift assay (CETSA) verified the binding relationship between honokiol and OTUB2. Cell counting kit 8 (CCK-8) tested the IC50 value and cell viability of OVCA cells after honokiol treatment. Corresponding assay kits determined malonic dialdehyde (MDA) and Fe2+ levels in OVCA cells. Flow cytometry measured reactive oxygen species levels. Western blot detected OTUB2, SLC7A11, and transcriptional co-activators Yes-associated protein (YAP) expression, and quantitative polymerase chain reaction (qPCR) detected OTUB2 expression. Immunohistochemistry (IHC) detected the expression level of Ki67 protein in tumor tissues. RESULTS Honokiol was capable of inducing ferroptosis in OVCA cells. CETSA confirmed that honokiol could bind to OTUB2. Further cell functional and molecular experiments revealed that honokiol induced ferroptosis in OVCA cells via repression of YAP signaling pathway through binding to OTUB2. In addition, in vivo experiments have confirmed that honokiol could inhibit the growth of OVCA. CONCLUSION Honokiol induced ferroptosis in OVCA cells via repression of YAP signaling pathway through binding to OTUB2, implicating that OTUB2 may be an effective target for OVCA treatment, and our study results may provide new directions for development of more effective OVCA treatment strategies.
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Affiliation(s)
- Fang Liu
- Department of Gynecology, The Second Affiliated Hospital of Jiaxing University, Zhejiang, China
| | - Yufang Zhang
- Department of Gynecology, The Second Affiliated Hospital of Jiaxing University, Zhejiang, China
| | - Xinyi Xia
- Department of Gynecology, The Second Affiliated Hospital of Jiaxing University, Zhejiang, China
| | - Jing Han
- Department of Gynecology, The Second Affiliated Hospital of Jiaxing University, Zhejiang, China
| | - Linyan Cao
- Department of Gynecology, The Second Affiliated Hospital of Jiaxing University, Zhejiang, China
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Kong L, Jin X. Dysregulation of deubiquitination in breast cancer. Gene 2024; 902:148175. [PMID: 38242375 DOI: 10.1016/j.gene.2024.148175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/04/2023] [Accepted: 01/16/2024] [Indexed: 01/21/2024]
Abstract
Breast cancer (BC) is a highly frequent malignant tumor that poses a serious threat to women's health and has different molecular subtypes, histological subtypes, and biological features, which act by activating oncogenic factors and suppressing cancer inhibitors. The ubiquitin-proteasome system (UPS) is the main process contributing to protein degradation, and deubiquitinases (DUBs) are reverse enzymes that counteract this process. There is growing evidence that dysregulation of DUBs is involved in the occurrence of BC. Herein, we review recent research findings in BC-associated DUBs, describe their nature, classification, and functions, and discuss the potential mechanisms of DUB-related dysregulation in BC. Furthermore, we present the successful treatment of malignant cancer with DUB inhibitors, as well as analyzing the status of targeting aberrant DUBs in BC.
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Affiliation(s)
- Lili Kong
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo 315211, Zhejiang, China
| | - Xiaofeng Jin
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo 315211, Zhejiang, China.
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Xiao J, Wang L, Zhuang Y, Zhu Q, Li W, Liao H, Chen X, Liu Z. The deubiquitinase OTUB2 promotes cervical cancer growth through stabilizing FOXM1. Am J Transl Res 2024; 16:75-84. [PMID: 38322554 PMCID: PMC10839374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 12/06/2023] [Indexed: 02/08/2024]
Abstract
OBJECTIVES Ovarian tumor (OTU) domain-containing ubiquitin aldehyde-binding protein Otubain2 (OTUB2) is an important cysteine protease with deubiquitinase activity in the OTU family. However, the role of OTUB2 in cervical cancer (CC) has not been investigated. METHODS OTUB2 expression was analyzed employing the CC data from The Cancer Genome Atlas (TCGA) database. Western blot and qRT-PCR analysis were performed to identify OTUB2 expression in CC. The oncogenic function of OTUB2 was identified through a series of in vitro and in vivo experiments. Tandem Mass Tag™ Quantitative Proteomics examination was used to identify potential targets of OTUB2. RESULTS OTUB2 was overexpressed in CC and was related to poor prognosis of patients. In our in-house cohort, we also showed that OTUB2 was overexpressed in tumor tissues of CC compared to para-tumor. Knockdown of OTUB2 suppressed CC cell growth whereas OTUB2 upregulation fostered the proliferation of cancer cells. Forkhead box M1 (FOXM1) was found to be a target of OTUB2. FOXM1 can be positively regulated by OTUB2 in CC cells. In human CC tissues, protein level of FOXM1 was positively correlated with OTUB2. FOXM1 was found to play a critical role in OTUB2-mediated CC cell growth. Mechanistically, OTUB2 could bind FOXM1 and deubiquitinate FOXM1 to stabilize it. CONCLUSION OTUB2 promotes CC progression through deubiquitinating and stabilizing FOXM1.
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Affiliation(s)
- Jing Xiao
- Department of Reproductive Medicine Center, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang UniversityNanchang 330006, Jiangxi, PR China
- Department of Obstetrics and Gynecology, Jiangxi Maternal and Child Health HospitalNanchang 330006, Jiangxi, PR China
| | - Liqun Wang
- Department of Obstetrics and Gynecology, Jiangxi Maternal and Child Health HospitalNanchang 330006, Jiangxi, PR China
| | - Yuan Zhuang
- Department of Obstetrics and Gynecology, Jiangxi Maternal and Child Health HospitalNanchang 330006, Jiangxi, PR China
| | - Qizhou Zhu
- Department of Obstetrics and Gynecology, Jiangxi Maternal and Child Health HospitalNanchang 330006, Jiangxi, PR China
| | - Weimei Li
- Department of Obstetrics and Gynecology, Jiangxi Maternal and Child Health HospitalNanchang 330006, Jiangxi, PR China
| | - Hong Liao
- Department of Obstetrics and Gynecology, Jiangxi Maternal and Child Health HospitalNanchang 330006, Jiangxi, PR China
| | - Xiaofang Chen
- Department of Obstetrics and Gynecology, Jiangxi Maternal and Child Health HospitalNanchang 330006, Jiangxi, PR China
| | - Zhaoxia Liu
- Department of Reproductive Medicine Center, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang UniversityNanchang 330006, Jiangxi, PR China
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Ilter M, Schulze-Niemand E, Naumann M, Stein M. Structural Dynamics of Lys11-Selective Deubiquitinylase Cezanne-1 during the Catalytic Cycle. J Chem Inf Model 2023; 63:2084-2094. [PMID: 36943332 PMCID: PMC10091412 DOI: 10.1021/acs.jcim.2c01281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
Deubiquitinylating enzymes (DUBs) regulate the deubiquitinylation process of post-translationally modified proteins and thus control protein signaling in various cellular processes. The DUB Cezanne-1 catalyzes the cleavage of the iso-peptide bond of Lys11-linked polyubiquitin chains with high selectivity. Crystal structures of Cezanne-1 in different states provide important insight regarding the complex formation and global changes during the catalytic cycle but are lacking details of dynamics and control of activation. Activity-based probes are used to isolate intermediate states upon forming covalent bonds with the DUB active site. Those, however, may lead to structures that are non-native. Conformational changes of Cezanne-1, during its process of activation and proteolytic activity, are investigated using all-atom molecular dynamics (MD) simulations of the ubiquitin-free, diubiquitin-bound, and monoubiquitin-bound Cezanne-1 DUB for a total of ∼18 μs. Our results show that ubiquitin-free Cezanne-1 dynamically shuttles between catalytically competent and incompetent states which suggests that its activation is independent of substrate binding. The catalytically competent substrate-free Cezanne-1 promotes distal ubiquitin substrate access to the catalytic center. The subsequent binding of the proximal ubiquitin shifts the equilibrium toward the catalytically competent state of the dyad, thereby promoting proteolysis of the iso-peptide bond. After cleavage of the scissile bond, sequential dissociation of first the proximal ubiquitin induces the inactivation of Cezanne-1. The subsequent release of the distal ubiquitin fully reconstitutes the inactive substrate-free state of Cezanne-1. The process of activation and catalytic turnover of DUB Cezanne-1 is a multistage cycle with several critical dynamic transitions that cannot be characterized based on protein structures alone. Activity-based probes of cysteine proteases lead to non-native protein-protein contacts, which need to be resolved in order to be able to issue statements about physiological states and substrate binding.
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Affiliation(s)
- Metehan Ilter
- Molecular Simulations and Design Group, Max Planck Institute for Dynamics of Complex Technical Systems, 39106 Magdeburg, Germany
| | - Eric Schulze-Niemand
- Molecular Simulations and Design Group, Max Planck Institute for Dynamics of Complex Technical Systems, 39106 Magdeburg, Germany
- Medical Faculty, Institute for Experimental Internal Medicine, Otto von Guericke University, 39120 Magdeburg, Germany
| | - Michael Naumann
- Medical Faculty, Institute for Experimental Internal Medicine, Otto von Guericke University, 39120 Magdeburg, Germany
| | - Matthias Stein
- Molecular Simulations and Design Group, Max Planck Institute for Dynamics of Complex Technical Systems, 39106 Magdeburg, Germany
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Liu L, Cheng H, Ji M, Su L, Lu Z, Hu X, Guan Y, Xiao J, Ma L, Zhang W, Pu H. OTUB2 Regulates YAP1/TAZ to Promotes the Progression of Esophageal Squamous Cell Carcinoma. Biol Proced Online 2022; 24:10. [PMID: 35850645 PMCID: PMC9290284 DOI: 10.1186/s12575-022-00169-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 06/06/2022] [Indexed: 12/04/2022] Open
Abstract
Objective The effects of Otubain-2 (OTUB2) on the proliferation, invasion, and migration of esophageal squamous cell carcinoma (ESCC) were investigated by interfering with OTUB2 expression. Methods Bioinformatics analysis was used to analyze OTUB2 expression in esophageal carcinoma and interactions between OTUB2 and YAP1/TAZ. Paraffin-embedded ESCC tissues (n = 183) were selected for immunohistochemical staining to detect OTUB2, YAP1, TAZ, CTGF and their relationship with clinicopathological parameters, then the survival prognosis of ESCC patients was analyzed. Immunofluorescence, western blotting, and qRT-PCR were used to evaluate OTUB2 in ESCC cell lines. Cell lines with the highest expression of OTUB2 were transfected with lentivirus to knockdown OTUB2 levels. Changes in KYSE150 cell proliferation, migration, and invasion were measured using CCK-8, wound healing, and clone formation assays. The Transwell test and flow cytometry identified OTUB2 targets and explored roles and mechanisms involved in ESCC. Effects of OTUB2 on YAP1/TAZ signaling were also observed. Results Bioinformatics analysis revealed OTUB2 was highly expressed in esophageal cancer and was associated with YAP1/TAZ. Immunohistochemistry showed that OTUB2 expression was increased in ESCC samples compared to parcancerous tissue. YAP1 and TAZ were higher expression in ESCC tissues, mainly localized in the nucleus. Compared with controls, the proliferation, migration, and invasion ability of KYSE150 cells after OTUB2 knockdown were significantly reduced (P < 0.05). The protein expression levels of YAP1, TAZ and CTGF decreased after knocking down the expression of OTUB2 (P < 0.05). OTUB2 knockdown in ESCC cell lines suppressed YAP1/TAZ signaling. Conclusions OTUB2 regulated the protein expression of YAP1/TAZ to promote cell proliferation, migration, invasion, and tumor development. Therefore, OTUB2 may represent a biomarker for ESCC and a potential target for ESCC treatment. Supplementary Information The online version contains supplementary material available at 10.1186/s12575-022-00169-9.
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Affiliation(s)
- Li Liu
- Department of Pathology, First Affliated Hospital, Xinjiang Medical University, No. 137, Liyushan South Road, Urumqi, 830054, Xinjiang, China
| | - Hu Cheng
- Department of Anesthesiology, First Affliated Hospital, Xinjiang Medical University, Urumqi, Xinjiang, People's Republic of China
| | - Min Ji
- School of Basic Medicine, Xinjiang Medical University, Urumqi, Xinjiang, People's Republic of China
| | - Liping Su
- Department of Pathology, First Affliated Hospital, Xinjiang Medical University, No. 137, Liyushan South Road, Urumqi, 830054, Xinjiang, China
| | - Ziyang Lu
- Qilu Hospital, Jinan, Shandong Province, China
| | - Xiayun Hu
- Shanghai Changhai Hospital, Shanghai, China
| | - Yaling Guan
- School of Basic Medicine, Xinjiang Medical University, Urumqi, Xinjiang, People's Republic of China
| | - Jinling Xiao
- School of Basic Medicine, Xinjiang Medical University, Urumqi, Xinjiang, People's Republic of China
| | - Lijuan Ma
- School of Basic Medicine, Xinjiang Medical University, Urumqi, Xinjiang, People's Republic of China
| | - Wei Zhang
- Department of Pathology, First Affliated Hospital, Xinjiang Medical University, No. 137, Liyushan South Road, Urumqi, 830054, Xinjiang, China.
| | - Hongwei Pu
- Department of Discipline Construction, First Affliated Hospital, Xinjiang Medical University, No. 137, Liyushan South Road, Urumqi, 830054, Xinjiang, China.
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Wang A, Chen X, Li D, Yang L, Jiang J. Deubiquitylating Enzyme OTUB2 Promotes the Progress of Liver Cancer Cells by Stabilizing TRIM54. INT J PHARMACOL 2022. [DOI: 10.3923/ijp.2022.633.643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Zhong X, Wang T, Zhang W, Wang M, Xie Y, Dai L, He X, Madhusudhan T, Zeng H, Wang H. ERK/RSK-mediated phosphorylation of Y-box binding protein-1 aggravates diabetic cardiomyopathy by suppressing its interaction with deubiquitinase OTUB1. J Biol Chem 2022; 298:101989. [PMID: 35490780 PMCID: PMC9163515 DOI: 10.1016/j.jbc.2022.101989] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 04/22/2022] [Accepted: 04/25/2022] [Indexed: 12/22/2022] Open
Abstract
Diabetic cardiomyopathy (DCM) is a major complication of diabetes, but its underlying mechanisms still remain unclear. The multifunctional protein Y-box binding protein-1 (YB-1) plays an important role in cardiac pathogenesis by regulating cardiac apoptosis, cardiac fibrosis, and pathological remodeling, whereas its role in chronic DCM requires further investigation. Here, we report that the phosphorylation of YB-1 at serine102 (S102) was markedly elevated in streptozotocin-induced diabetic mouse hearts and in high glucose-treated cardiomyocytes, whereas total YB-1 protein levels were significantly reduced. Coimmunoprecipitation experiments showed that YB-1 interacts with the deubiquitinase otubain-1, but hyperglycemia-induced phosphorylation of YB-1 at S102 diminished this homeostatic interaction, resulting in ubiquitination and degradation of YB-1. Mechanistically, the high glucose-induced phosphorylation of YB-1 at S102 is dependent on the upstream extracellular signal-regulated kinase (ERK)/Ras/mitogen-activated protein kinase (p90 ribosomal S6 kinase [RSK]) signaling pathway. Accordingly, pharmacological inhibition of the ERK pathway using the upstream kinase inhibitor U0126 ameliorated features of DCM compared with vehicle-treated diabetic mice. We demonstrate that ERK inhibition with U0126 also suppressed the phosphorylation of the downstream RSK and YB-1 (S102), which stabilized the interaction between YB-1 and otubain-1 and thereby preserved YB-1 protein expression in diabetic hearts. Taken together, we propose that targeting the ERK/RSK/YB-1 pathway could be a potential therapeutic approach for treating DCM.
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Affiliation(s)
- Xiaodan Zhong
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, PR China
| | - Tao Wang
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Department of Cardiology, Affiliated Hospital of Weifang Medical University, Weifang, Shandong, PR China
| | - Wenjun Zhang
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, PR China
| | - Mengwen Wang
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, PR China
| | - Yang Xie
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, PR China
| | - Lei Dai
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, PR China
| | - Xingwei He
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, PR China
| | - Thati Madhusudhan
- Center for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany
| | - Hesong Zeng
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, PR China.
| | - Hongjie Wang
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, PR China.
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10
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Li J, Zhang N, Li M, Hong T, Meng W, Ouyang T. The Emerging Role of OTUB2 in Diseases: From Cell Signaling Pathway to Physiological Function. Front Cell Dev Biol 2022; 10:820781. [PMID: 35309903 PMCID: PMC8926145 DOI: 10.3389/fcell.2022.820781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 02/03/2022] [Indexed: 11/13/2022] Open
Abstract
Ovarian tumor (OTU) domain-containing ubiquitin aldehyde-binding protein Otubain2 (OTUB2) was a functional cysteine protease in the OTU family with deubiquitinase activity. In recent years, with the wide application of molecular biology techniques, molecular mechanism regulation at multiple levels of cell signaling pathways has been gradually known, such as ubiquitin-mediated protein degradation and phosphorylation-mediated protein activation. OTUB2 is involved in the deubiquitination of many key proteins in different cell signaling pathways, and the effect of OTUB2 on human health or disease is not clear. OTUB2 is likely to cause cancer and other malignant diseases while maintaining normal human development and physiological function. Therefore, it is of great value to comprehensively understand the regulatory mechanism of OTUB2 and regard it as a target for the treatment of diseases. This review makes a general description and appropriate analysis of OTUB2's regulation in different cell signaling pathways, and connects OTUB2 with cancer from the research hotspot perspective of DNA damage repair and immunity, laying the theoretical foundation for future research.
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Affiliation(s)
- Jun Li
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Jiangxi, China.,Department of the Second Clinical Medical College of Nanchang University, Jiangxi, China
| | - Na Zhang
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Jiangxi, China
| | - Meihua Li
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Jiangxi, China
| | - Tao Hong
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Jiangxi, China
| | - Wei Meng
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Jiangxi, China
| | - Taohui Ouyang
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Jiangxi, China
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OTUB2 Promotes Proliferation and Migration of Hepatocellular Carcinoma Cells by PJA1 Deubiquitylation. Cell Mol Bioeng 2022; 15:281-292. [PMID: 35611163 PMCID: PMC9124278 DOI: 10.1007/s12195-022-00720-4] [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: 06/24/2021] [Accepted: 01/12/2022] [Indexed: 02/03/2023] Open
Abstract
Introduction Recent studies have revealed that several deubiquitinating enzymes (DUBs) play important roles in hepatocellular carcinoma (HCC) progression, but the roles of Otubain 2 (OTUB2) in HCC remain obscure. Methods In this study, we investigated the expression of OTUB2 in HCC based on clinical samples and a public online database (ENCORI), and its roles and working mechanisms were further explored by in vitro experiments. Results It was found that the expression of OTUB2 was significantly up-regulated in HCC tissues, and correlated with poor prognosis of HCC patients. Functionally, the overexpression of OTUB2 could promote malignant proliferation and metastasis of HCC cells, while knockdown of OTUB2 exerted the opposite results. Using two bioinformatics tools, PJA1 was identified as a potential gene regulated by OTUB2. Mechanistically, it was found that OTUB2 promoted the stabilization of PJA1 by deubiquitylation, based on immunoprecipitation (IP) and cycloheximide (CHX) assays. Moreover, the suppressive effects of OTUB2 depletion on the malignant phenotypes of HCC cells could be reversed by overexpressing PJA1. Conclusion In conclusion, our study indicated that OTUB2 could promote the malignant proliferation and migration of HCC cells by increasing the stability of PJA1 via deubiquitylation.
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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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Schulze-Niemand E, Naumann M, Stein M. The Activation and Selectivity of the Legionella RavD Deubiquitinase. Front Mol Biosci 2021; 8:770320. [PMID: 34869597 PMCID: PMC8635228 DOI: 10.3389/fmolb.2021.770320] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 11/01/2021] [Indexed: 11/13/2022] Open
Affiliation(s)
- Eric Schulze-Niemand
- Molecular Simulations and Design Group, Max Planck Institute for Dynamics of Complex Technical Systems, Magdeburg, Germany.,Medical Faculty, Institute for Experimental Internal Medicine, Otto-von-Guericke University, Magdeburg, Germany
| | - Michael Naumann
- Medical Faculty, Institute for Experimental Internal Medicine, Otto-von-Guericke University, Magdeburg, Germany
| | - Matthias Stein
- Molecular Simulations and Design Group, Max Planck Institute for Dynamics of Complex Technical Systems, Magdeburg, Germany
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Li Y, Du X, Liu Z, Zhang M, Huang Y, Tian J, Jiang Q, Zhao Y. Two genes related to reproductive development in the juvenile prawn, Macrobrachium nipponense: Molecular characterization and transcriptional response to nanoplastic exposure. CHEMOSPHERE 2021; 281:130827. [PMID: 34015647 DOI: 10.1016/j.chemosphere.2021.130827] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 04/11/2021] [Accepted: 05/04/2021] [Indexed: 06/12/2023]
Abstract
Plastic pollution in the form of nanoplastics poses a global threat to aquatic ecosystems and the organisms inhabiting them. However, few studies have been conducted on the effects of nanoplastic exposure on reproductive development in crustaceans. In order to address this issue, juvenile oriental river prawns (Macrobrachium nipponense) were exposed to different concentrations of 75-nm polystyrene nanoplastics (0, 5, 10, 20, 40 mg/L) for 28 days. In order to study the regulation of reproduction-related genes in the presence of nanoplastics, the Wee1 protein kinase gene (Wee1) and OTU domain ubiquitin aldehyde binding protein gene (OTUB) were selected. In this study, for the first time, the full-length cDNA of Mn-Wee1 and Mn-OTUB were cloned from M. nipponense. Homologous alignments revealed that Mn-Wee1 had a highly conserved function-critical sequence, and that Mn-OTUB was more closely related to OTUB1 than OTUB2. With increasing concentration of nanoplastics, the expression of both genes increased initially, then decreased. The inhibition of expression of Wee1 and OTUB occurred in 40 mg/L group, respectively. Analysis of the data also indicated that nanoplastic exposure might have differing effects on gene expression in M. nipponense male and female reproductive organs.
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Affiliation(s)
- Yiming Li
- School of Life Science, East China Normal University, Shanghai, 200241, China
| | - Xinglin Du
- School of Life Science, East China Normal University, Shanghai, 200241, China
| | - Zhiquan Liu
- School of Life Science, East China Normal University, Shanghai, 200241, China
| | - Meng Zhang
- School of Life Science, East China Normal University, Shanghai, 200241, China
| | - Youhui Huang
- School of Life Science, East China Normal University, Shanghai, 200241, China
| | - Jiangtao Tian
- School of Life Science, East China Normal University, Shanghai, 200241, China
| | - Qichen Jiang
- Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, 210017, China
| | - Yunlong Zhao
- School of Life Science, East China Normal University, Shanghai, 200241, China; State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200241, China.
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Sivakumar D, Stein M. Binding of SARS-CoV Covalent Non-Covalent Inhibitors to the SARS-CoV-2 Papain-Like Protease and Ovarian Tumor Domain Deubiquitinases. Biomolecules 2021; 11:biom11060802. [PMID: 34071582 PMCID: PMC8227062 DOI: 10.3390/biom11060802] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 05/26/2021] [Accepted: 05/26/2021] [Indexed: 12/23/2022] Open
Abstract
The urgent need for novel and effective drugs against the SARS-CoV-2 coronavirus pandemic has stimulated research worldwide. The Papain-like protease (PLpro), which is essential for viral replication, shares a similar active site structural architecture to other cysteine proteases. Here, we have used representatives of the Ovarian Tumor Domain deubiquitinase family OTUB1 and OTUB2 along with the PLpro of SARS-CoV-2 to validate and rationalize the binding of inhibitors from previous SARS-CoV candidate compounds. By forming a new chemical bond with the cysteine residue of the catalytic triad, covalent inhibitors irreversibly suppress the protein’s activity. Modeling covalent inhibitor binding requires detailed knowledge about the compounds’ reactivities and binding. Molecular Dynamics refinement simulations of top poses reveal detailed ligand-protein interactions and show their stability over time. The recently discovered selective OTUB2 covalent inhibitors were used to establish and validate the computational protocol. Structural parameters and ligand dynamics are in excellent agreement with the ligand-bound OTUB2 crystal structures. For SARS-CoV-2 PLpro, recent covalent peptidomimetic inhibitors were simulated and reveal that the ligand-protein interaction is very dynamic. The covalent and non-covalent docking plus subsequent MD refinement of known SARS-CoV inhibitors into DUBs and the SARS-CoV-2 PLpro point out a possible approach to target the PLpro cysteine protease from SARS-CoV-2. The results show that such an approach gives insight into ligand-protein interactions, their dynamic character, and indicates a path for selective ligand design.
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Sivakumar D, Mudedla S, Jang S, Kim H, Park H, Choi Y, Oh J, Wu S. Computational Study on Selective PDE9 Inhibitors on PDE9-Mg/Mg, PDE9-Zn/Mg, and PDE9-Zn/Zn Systems. Biomolecules 2021; 11:biom11050709. [PMID: 34068780 PMCID: PMC8151263 DOI: 10.3390/biom11050709] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 04/29/2021] [Accepted: 05/08/2021] [Indexed: 02/06/2023] Open
Abstract
PDE9 inhibitors have been studied to validate their potential to treat diabetes, neurodegenerative disorders, cardiovascular diseases, and erectile dysfunction. In this report, we have selected highly potent previously reported selective PDE9 inhibitors BAY73-6691R, BAY73-6691S, 28r, 28s, 3r, 3s, PF-0447943, PF-4181366, and 4r to elucidate the differences in their interaction patterns in the presence of different metal systems such as Zn/Mg, Mg/Mg, and Zn/Zn. The initial complexes were generated by molecular docking followed by molecular dynamics simulation for 100 ns in triplicate for each system to understand the interactions’ stability. The results were carefully analyzed, focusing on the ligands’ non-bonded interactions with PDE9 in different metal systems.
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Affiliation(s)
| | - Sathishkumar Mudedla
- R&D Center, Pharmcadd, 221, 17 APEC-ro, Haeundae-gu, Busan 48060, Korea; (D.S.); (S.M.); (S.J.)
| | - Seonghun Jang
- R&D Center, Pharmcadd, 221, 17 APEC-ro, Haeundae-gu, Busan 48060, Korea; (D.S.); (S.M.); (S.J.)
| | - Hyunjun Kim
- R&D Center, Huons co. Ltd., Ansan-si 15588, Korea; (H.K.); (H.P.); (Y.C.); (J.O.)
| | - Hyunjin Park
- R&D Center, Huons co. Ltd., Ansan-si 15588, Korea; (H.K.); (H.P.); (Y.C.); (J.O.)
| | - Yonwon Choi
- R&D Center, Huons co. Ltd., Ansan-si 15588, Korea; (H.K.); (H.P.); (Y.C.); (J.O.)
| | - Joongyo Oh
- R&D Center, Huons co. Ltd., Ansan-si 15588, Korea; (H.K.); (H.P.); (Y.C.); (J.O.)
| | - Sangwook Wu
- R&D Center, Pharmcadd, 221, 17 APEC-ro, Haeundae-gu, Busan 48060, Korea; (D.S.); (S.M.); (S.J.)
- Correspondence: ; Tel.: +82-51-731-5688
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Liao Y, Wu N, Wang K, Wang M, Wang Y, Gao J, Zhong B, Ma F, Wu Y, Jiang N. OTUB1 Promotes Progression and Proliferation of Prostate Cancer via Deubiquitinating and Stabling Cyclin E1. Front Cell Dev Biol 2021; 8:617758. [PMID: 33537306 PMCID: PMC7848094 DOI: 10.3389/fcell.2020.617758] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 12/15/2020] [Indexed: 11/13/2022] Open
Abstract
Background: Prostate cancer (PCa) is currently the most common cancer among males worldwide. It has been reported that OTUB1 plays a critical role in a variety of tumors and is strongly related to tumor proliferation, migration, and clinical prognosis. The aim of this research is to investigate the regulatory effect of OTUB1 on PCa proliferation and the underlying mechanism. Methods: Using the TCGA database, we identified that OTUB1 was up-regulated in PCa, and observed severe functional changes in PC3 and C4-2 cells through overexpression or knock down OTUB1. Heterotopic tumors were implanted subcutaneously in nude mice and IHC staining was performed on tumor tissues. The relationship between OTUB1 and cyclin E1 was identified via Western blotting and immunoprecipitations assays. Results: We found that the expression of OTUB1 in PCa was significantly higher than that in Benign Prostatic Hyperplasia (BPH). Overexpression OTUB1 obviously promoted the proliferation and migration of PC3 and C4-2 cells via mediating the deubiquitinated Cyclin E1, while OTUB1 knockout has the opposite effect. The nude mice experiment further explained the above conclusions. We finally determined that OTUB1 promotes the proliferation and progression of PCa via deubiquitinating and stabling Cyclin E1. Conclusions: Our findings reveal the critical role of OTUB1 in PCa, and OTUB1 promotes the proliferation and progression of PCa via deubiquitinating and stabilizing Cyclin E1. Blocking OTUB1/Cyclin E1 axis or applying RO-3306 could significantly repress the occurrence and development of PCa. OTUB1/Cyclin E1 axis might provide a new and potential therapeutic target for PCa.
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Affiliation(s)
- Yihao Liao
- Tianjin Institute of Urology. The Second Hospital of Tianjin Medical University, Tianjin Medical University, Tianjin, China
| | - Ning Wu
- Key Laboratory of Breast Cancer Prevention and Therapy, State Ministry of Education, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Hospital and Institute, Tianjin, China
- Key Laboratory of Cancer Prevention and Therapy, Tianjin Clinical Research Center for Cancer, Tianjin Medical University Cancer Hospital and Institute, Tianjin, China
| | - Keke Wang
- Tianjin Institute of Urology. The Second Hospital of Tianjin Medical University, Tianjin Medical University, Tianjin, China
| | - Miaomiao Wang
- Tianjin Institute of Urology. The Second Hospital of Tianjin Medical University, Tianjin Medical University, Tianjin, China
| | - Youzhi Wang
- Tianjin Institute of Urology. The Second Hospital of Tianjin Medical University, Tianjin Medical University, Tianjin, China
| | - Jie Gao
- Tianjin Institute of Urology. The Second Hospital of Tianjin Medical University, Tianjin Medical University, Tianjin, China
| | - Boqiang Zhong
- Tianjin Institute of Urology. The Second Hospital of Tianjin Medical University, Tianjin Medical University, Tianjin, China
| | - Fuling Ma
- Tianjin Institute of Urology. The Second Hospital of Tianjin Medical University, Tianjin Medical University, Tianjin, China
| | - Yudong Wu
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ning Jiang
- Tianjin Institute of Urology. The Second Hospital of Tianjin Medical University, Tianjin Medical University, Tianjin, China
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