1
|
Kim YJ, Lee HJ, Kim KH, Cho SP, Jung JY. OTUD7B knockdown inhibits proliferation and autophagy through AKT/mTOR signaling pathway in human prostate cancer cell. Discov Oncol 2024; 15:247. [PMID: 38935308 PMCID: PMC11211289 DOI: 10.1007/s12672-024-01073-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 05/30/2024] [Indexed: 06/28/2024] Open
Abstract
Prostate cancer (PCa) is the second leading disease of cancer-related death in men around the world, and it is almost impossible to treat advanced PCa. OTUD7B is a member of the deubiquitinase family that undergoes a post-translational transformation process, which is essential for cell stability and signaling and is known to play a critical role in cancer. However, its role in PCa has not been discovered. The aim of the study was to investigate the expression and mechanism of OTUD7B in PCa cells. According to the database, high OTUD7B expression showed a poor prognosis. Therefore, we downregulated OTUD7B using siRNA and confirmed the role of OTUD7B in PC3 prostate cancer cells. OTUD7B knockdown effectively induced apoptosis and inhibited the proliferation in PC3 cells. OTUD7B knockdown inhibited autophagy through AKT/mTOR signaling. We also confirmed the relationship between AKT/mTOR signaling and autophagy through rapamycin, an mTOR inhibitor. Taken together, OTUD7B promotes the proliferation, and autophagy, and inhibits apoptosis of prostate cancer cells via the AKT/mTOR signaling pathway.
Collapse
Affiliation(s)
- Yae Ji Kim
- Department of Veterinary Medicine, Institute of Veterinary Science, College of Veterinary Medicine, Chungnam National University, 220 Gung-Dong, Yusung-Gu, Daejeon, 34134, Republic of Korea
| | - Hui Ju Lee
- Department of Veterinary Medicine, Institute of Veterinary Science, College of Veterinary Medicine, Chungnam National University, 220 Gung-Dong, Yusung-Gu, Daejeon, 34134, Republic of Korea
| | - Kyung Hyun Kim
- Department of Veterinary Medicine, Institute of Veterinary Science, College of Veterinary Medicine, Chungnam National University, 220 Gung-Dong, Yusung-Gu, Daejeon, 34134, Republic of Korea
| | - Sung Pil Cho
- Department of Veterinary Medicine, Institute of Veterinary Science, College of Veterinary Medicine, Chungnam National University, 220 Gung-Dong, Yusung-Gu, Daejeon, 34134, Republic of Korea
| | - Ju Young Jung
- Department of Veterinary Medicine, Institute of Veterinary Science, College of Veterinary Medicine, Chungnam National University, 220 Gung-Dong, Yusung-Gu, Daejeon, 34134, Republic of Korea.
| |
Collapse
|
2
|
Sun C, Bai J, Sun J, Sun Y, Zhang F, Li H, Liu Y, Meng L, Wang X. OTU deubiquitinase 7B facilitates the hyperthermia-induced inhibition of lung cancer progression through enhancing Smac-mediated mitochondrial dysfunction. ENVIRONMENTAL TOXICOLOGY 2024; 39:1989-2005. [PMID: 38088504 DOI: 10.1002/tox.24080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 11/18/2023] [Accepted: 11/28/2023] [Indexed: 03/09/2024]
Abstract
Hyperthermia, as an adjuvant therapy, has shown promising anti-tumor effects. Ovarian tumor domain-containing 7B (OTUD7B) is a deubiquitinating enzyme that is frequently found in a variety of cancers. The aim of this study is to investigate the role of OTUD7B in lung cancer hyperthermia and the underlying mechanism. A549 and CALU-3 cells were respectively exposed to 42 or 44°C for the indicated times (0, 1, 3, or 6 h) followed by incubation at 37°C for 24 h. We found a temperature- and time-dependent decrease in cell viability and an increase in apoptosis levels. Compared with 0 h, heat treatment for 3 h inhibited the proliferation and invasion of A549 cells, reduced the expression levels of mitochondrial membrane potential, IAP family members (cIAP-1 and XIAP) proteins and ubiquitination of Smac, and increased Smac protein expression. Treatment with 10 μM Smac mimic BV6 further enhanced the anti-tumor effect of hyperthermia. Next, co-IP validation showed that OTUD7B interacted with Smac and stabilized Smac through deubiquitination. OTUD7B overexpression induced damage in A549 and CALU-3 cells, while silencing OTUD7B caused opposite effects. Overexpressing OTUD7B enhanced the anti-cancer effect of hyperthermia, while si-OTUD7B reversed the anti-cancer effect of hyperthermia, which was verified in the xenograft tumor model in nude mice. Taken together, OTUD7B may serve as a potential anticancer factor with potential clinical efficacy in the thermotherapeutic treatment of lung cancer.
Collapse
Affiliation(s)
- Chao Sun
- Department of Medical Oncology, Shaanxi Provincial People's Hospital, Xi'an, China
| | - Jun Bai
- Department of Medical Oncology, Shaanxi Provincial People's Hospital, Xi'an, China
| | - Jingying Sun
- Shaanxi Provincial Key Laboratory of Infectious and Immunological Diseases, Shaanxi Provincial People's Hospital, Xi'an, China
| | - Yang Sun
- Data Center, Shaanxi Provincial People's Hospital, Xi'an, China
| | - Fan Zhang
- Department of Medical Oncology, Shaanxi Provincial People's Hospital, Xi'an, China
| | - He Li
- Department of Medical Oncology, Shaanxi Provincial People's Hospital, Xi'an, China
| | - Ying Liu
- Department of Medical Oncology, Shaanxi Provincial People's Hospital, Xi'an, China
| | - Lian Meng
- Department of Pathology, The First Affiliated Hospital of Shihezi University, Shihezi, China
| | - Xifang Wang
- Department of Medical Oncology, Shaanxi Provincial People's Hospital, Xi'an, China
| |
Collapse
|
3
|
Lin IL, Lin YT, Chang YC, Kondapuram SK, Lin KH, Chen PC, Kuo CY, Coumar MS, Cheung CHA. The SMAC mimetic GDC-0152 is a direct ABCB1-ATPase activity modulator and BIRC5 expression suppressor in cancer cells. Toxicol Appl Pharmacol 2024; 485:116888. [PMID: 38452945 DOI: 10.1016/j.taap.2024.116888] [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: 10/27/2023] [Revised: 02/20/2024] [Accepted: 03/04/2024] [Indexed: 03/09/2024]
Abstract
Upregulation of the multidrug efflux pump ABCB1/MDR1 (P-gp) and the anti-apoptotic protein BIRC5/Survivin promotes multidrug resistance in various human cancers. GDC-0152 is a DIABLO/SMAC mimetic currently being tested in patients with solid tumors. However, it is still unclear whether GDC-0152 is therapeutically applicable for patients with ABCB1-overexpressing multidrug-resistant tumors, and the molecular mechanism of action of GDC-0152 in cancer cells is still incompletely understood. In this study, we found that the potency of GDC-0152 is unaffected by the expression of ABCB1 in cancer cells. Interestingly, through in silico and in vitro analysis, we discovered that GDC-0152 directly modulates the ABCB1-ATPase activity and inhibits ABCB1 multidrug efflux activity at sub-cytotoxic concentrations (i.e., 0.25×IC50 or less). Further investigation revealed that GDC-0152 also decreases BIRC5 expression, induces mitophagy, and lowers intracellular ATP levels in cancer cells at low cytotoxic concentrations (i.e., 0.5×IC50). Co-treatment with GDC-0152 restored the sensitivity to the known ABCB1 substrates, including paclitaxel, vincristine, and YM155 in ABCB1-expressing multidrug-resistant cancer cells, and it also restored the sensitivity to tamoxifen in BIRC5-overexpressing tamoxifen-resistant breast cancer cells in vitro. Moreover, co-treatment with GDC-0152 restored and potentiated the anticancer effects of paclitaxel in ABCB1 and BIRC5 co-expressing xenograft tumors in vivo. In conclusion, GDC-0152 has the potential for use in the management of cancer patients with ABCB1 and BIRC5-related drug resistance. The findings of our study provide essential information to physicians for designing a more patient-specific GDC-0152 clinical trial program in the future.
Collapse
Affiliation(s)
- I-Li Lin
- Department of Radiology, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi 600566, Taiwan
| | - Yu-Ting Lin
- Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
| | - Yung-Chieh Chang
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University 701, Tainan, Taiwan
| | - Sree Karani Kondapuram
- Department of Bioinformatics, School of Life Sciences, Pondicherry University, Kalapet, Puducherry 605014, India
| | - Kai-Hsuan Lin
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University 701, Tainan, Taiwan
| | - Pin-Chen Chen
- Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
| | - Chung-Ying Kuo
- Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
| | - Mohane Selvaraj Coumar
- Department of Bioinformatics, School of Life Sciences, Pondicherry University, Kalapet, Puducherry 605014, India
| | - Chun Hei Antonio Cheung
- Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan; Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University 701, Tainan, Taiwan.
| |
Collapse
|
4
|
Zhai W, Jin Y. OTUD7B: A potential therapeutic target in the treatment of gastric cancer? Dig Liver Dis 2024; 56:536. [PMID: 38008693 DOI: 10.1016/j.dld.2023.11.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 11/13/2023] [Indexed: 11/28/2023]
Affiliation(s)
- Wei Zhai
- Department of digestive endoscopy, The Second People(,)s Hospital of Liaocheng, Liaocheng 252000, PR China
| | - Yan Jin
- Department of digestive endoscopy, The Second People(,)s Hospital of Liaocheng, Liaocheng 252000, PR China.
| |
Collapse
|
5
|
Bolhuis DL, Emanuele MJ, Brown NG. Friend or foe? Reciprocal regulation between E3 ubiquitin ligases and deubiquitinases. Biochem Soc Trans 2024; 52:BST20230454. [PMID: 38414432 DOI: 10.1042/bst20230454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/31/2024] [Accepted: 02/06/2024] [Indexed: 02/29/2024]
Abstract
Protein ubiquitination is a post-translational modification that entails the covalent attachment of the small protein ubiquitin (Ub), which acts as a signal to direct protein stability, localization, or interactions. The Ub code is written by a family of enzymes called E3 Ub ligases (∼600 members in humans), which can catalyze the transfer of either a single ubiquitin or the formation of a diverse array of polyubiquitin chains. This code can be edited or erased by a different set of enzymes termed deubiquitinases (DUBs; ∼100 members in humans). While enzymes from these distinct families have seemingly opposing activities, certain E3-DUB pairings can also synergize to regulate vital cellular processes like gene expression, autophagy, innate immunity, and cell proliferation. In this review, we highlight recent studies describing Ub ligase-DUB interactions and focus on their relationships.
Collapse
Affiliation(s)
- Derek L Bolhuis
- Department of Biochemistry and Biophysics, UNC Chapel Hill School of Medicine, Chapel Hill, NC 27599, U.S.A
| | - Michael J Emanuele
- Department of Pharmacology and Lineberger Comprehensive Care Center, UNC Chapel Hill School of Medicine, Chapel Hill, NC 27599, U.S.A
| | - Nicholas G Brown
- Department of Pharmacology and Lineberger Comprehensive Care Center, UNC Chapel Hill School of Medicine, Chapel Hill, NC 27599, U.S.A
| |
Collapse
|
6
|
Xue Y, Xue C, Song W. Emerging roles of deubiquitinating enzymes in actin cytoskeleton and tumor metastasis. Cell Oncol (Dordr) 2024:10.1007/s13402-024-00923-z. [PMID: 38324230 DOI: 10.1007/s13402-024-00923-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/25/2024] [Indexed: 02/08/2024] Open
Abstract
BACKGROUND Metastasis accounts for the majority of cancer-related deaths. Actin dynamics and actin-based cell migration and invasion are important factors in cancer metastasis. Metastasis is characterized by actin polymerization and depolymerization, which are precisely regulated by molecular changes involving a plethora of actin regulators, including actin-binding proteins (ABPs) and signalling pathways, that enable cancer cell dissemination from the primary tumour. Research on deubiquitinating enzymes (DUBs) has revealed their vital roles in actin dynamics and actin-based migration and invasion during cancer metastasis. CONCLUSION Here, we review how DUBs drive tumour metastasis by participating in actin rearrangement and actin-based migration and invasion. We summarize the well-characterized and essential actin cytoskeleton signalling molecules related to DUBs, including Rho GTPases, Src kinases, and ABPs such as cofilin and cortactin. Other DUBs that modulate actin-based migration signalling pathways are also discussed. Finally, we discuss and address therapeutic opportunities and ongoing challenges related to DUBs with respect to actin dynamics.
Collapse
Affiliation(s)
- Ying Xue
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, PR China.
| | - Cong Xue
- School of Stomatology, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, 250117, PR China
| | - Wei Song
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, PR China.
| |
Collapse
|
7
|
Pandey R, Bisht P, Wal P, Murti K, Ravichandiran V, Kumar N. SMAC Mimetics for the Treatment of Lung Carcinoma: Present Development and Future Prospects. Mini Rev Med Chem 2024; 24:1334-1352. [PMID: 38275029 DOI: 10.2174/0113895575269644231120104501] [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: 06/29/2023] [Revised: 09/07/2023] [Accepted: 10/10/2023] [Indexed: 01/27/2024]
Abstract
BACKGROUND Uncontrolled cell growth and proliferation, which originate from lung tissue often lead to lung carcinoma and are more likely due to smoking as well as inhaled environmental toxins. It is widely recognized that tumour cells evade the ability of natural programmed death (apoptosis) and facilitates tumour progression and metastasis. Therefore investigating and targeting the apoptosis pathway is being utilized as one of the best approaches for decades. OBJECTIVE This review describes the emergence of SMAC mimetic drugs as a treatment approach, its possibilities to synergize the response along with current limitations as well as future perspective therapy for lung cancer. METHOD Articles were analysed using search engines and databases namely Pubmed and Scopus. RESULT Under cancerous circumstances, the level of Inhibitor of Apoptosis Proteins (IAPs) gets elevated, which suppresses the pathway of programmed cell death, plus supports the proliferation of lung cancer. As it is a major apoptosis regulator, natural drugs that imitate the IAP antagonistic response like SMAC mimetic agents/Diablo have been identified to trigger cell death. SMAC i.e. second mitochondria activators of caspases is a molecule produced by mitochondria, stimulates apoptosis by neutralizing/inhibiting IAP and prevents its potential responsible for the activation of caspases. Various preclinical data have proven that these agents elicit the death of lung tumour cells. Apart from inducing apoptosis, these also sensitize the cancer cells toward other effective anticancer approaches like chemo, radio, or immunotherapies. There are many SMAC mimetic agents such as birinapant, BV-6, LCL161, and JP 1201, which have been identified for diagnosis as well as treatment purposes in lung cancer and are also under clinical investigation. CONCLUSION SMAC mimetics acts in a restorative way in the prevention of lung cancer.
Collapse
Affiliation(s)
- Ruchi Pandey
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education & Research (NIPER), Hajipur, Bihar, 844102, India
| | - Priya Bisht
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education & Research (NIPER), Hajipur, Bihar, 844102, India
| | - Pranay Wal
- Department of Pharmacy, Pranveer Singh Institute of Technology, Kanpur, Uttar Pradesh, India
| | - Krishna Murti
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education & Research (NIPER), Hajipur, Bihar, 844102, India
| | - V Ravichandiran
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education & Research (NIPER), Hajipur, Bihar, 844102, India
| | - Nitesh Kumar
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education & Research (NIPER), Hajipur, Bihar, 844102, India
| |
Collapse
|
8
|
Du B, Zhang J, Kong L, Shi H, Zhang D, Wang X, Yang C, Li P, Yao R, Liang C, Wu L, Huang Z. Ovarian Tumor Domain-Containing 7B Attenuates Pathological Cardiac Hypertrophy by Inhibiting Ubiquitination and Degradation of Krüppel-Like Factor 4. J Am Heart Assoc 2023; 12:e029745. [PMID: 38084712 PMCID: PMC10863784 DOI: 10.1161/jaha.123.029745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 08/15/2023] [Indexed: 12/20/2023]
Abstract
BACKGROUND Cardiac hypertrophy (CH) is a well-established risk factor for many cardiovascular diseases and a primary cause of mortality and morbidity among older adults. Currently, no pharmacological interventions have been specifically tailored to treat CH. OTUD7B (ovarian tumor domain-containing 7B) is a member of the ovarian tumor-related protease (OTU) family that regulates many important cell signaling pathways. However, the role of OTUD7B in the development of CH is unclear. Therefore, we investigated the role of OTUD7B in CH. METHODS AND RESULTS OTUD7B knockout mice were used to assay the role of OTUD7B in CH after transverse aortic coarctation surgery. We further assayed the specific functions of OTUD7B in isolated neonatal rat cardiomyocytes. We found that OTUD7B expression decreased in hypertrophic mice hearts and phenylephrine-stimulated neonatal rat cardiomyocytes. Furthermore, OTUD7B deficiency exacerbated transverse aortic coarctation surgery-induced myocardial hypertrophy, abnormal cardiac function, and fibrosis. In cardiac myocytes, OTUD7B knockdown promoted phenylephrine stimulation-induced myocardial hypertrophy, whereas OTUD7B overexpression had the opposite effect. An immunoprecipitation-mass spectrometry analysis showed that OTUD7B directly binds to KLF4 (Krüppel-like factor 4). Additional molecular experiments showed that OTUD7B impedes KLF4 degradation by inhibiting lysine residue at 48 site-linked ubiquitination and suppressing myocardial hypertrophy by activating the serine/threonine kinase pathway. CONCLUSIONS These results demonstrate that the OTUD7B-KLF4 axis is a novel molecular target for CH treatment.
Collapse
Affiliation(s)
- Bin‐Bin Du
- Cardiovascular Hospital, The First Affiliated Hospital of Zhengzhou University, Zhengzhou UniversityZhengzhouChina
| | - Jie‐Lei Zhang
- Department of EndocrinologyThe First Affiliated Hospital of Zhengzhou University, Zhengzhou UniversityZhengzhouChina
| | - Ling‐Yao Kong
- Cardiovascular Hospital, The First Affiliated Hospital of Zhengzhou University, Zhengzhou UniversityZhengzhouChina
| | - Hui‐Ting Shi
- Cardiovascular Hospital, The First Affiliated Hospital of Zhengzhou University, Zhengzhou UniversityZhengzhouChina
| | - Dian‐Hong Zhang
- Cardiovascular Hospital, The First Affiliated Hospital of Zhengzhou University, Zhengzhou UniversityZhengzhouChina
| | - Xing Wang
- Cardiovascular Hospital, The First Affiliated Hospital of Zhengzhou University, Zhengzhou UniversityZhengzhouChina
| | - Chun‐Lei Yang
- Cardiovascular Hospital, The First Affiliated Hospital of Zhengzhou University, Zhengzhou UniversityZhengzhouChina
| | - Peng‐Cheng Li
- Cardiovascular Hospital, The First Affiliated Hospital of Zhengzhou University, Zhengzhou UniversityZhengzhouChina
| | - Rui Yao
- Cardiovascular Hospital, The First Affiliated Hospital of Zhengzhou University, Zhengzhou UniversityZhengzhouChina
| | - Cui Liang
- Cardiovascular Hospital, The First Affiliated Hospital of Zhengzhou University, Zhengzhou UniversityZhengzhouChina
| | - Lei‐Ming Wu
- Cardiovascular Hospital, The First Affiliated Hospital of Zhengzhou University, Zhengzhou UniversityZhengzhouChina
| | - Zhen Huang
- Cardiovascular Hospital, The First Affiliated Hospital of Zhengzhou University, Zhengzhou UniversityZhengzhouChina
| |
Collapse
|
9
|
Shang L, Du Y, Zhao Y, Zhang Y, Liu C. The Interaction of OTUB1 and TRAF3 Mediates NLRP3 Inflammasome Activity to Regulate TGF-β1-induced BEAS-2B Cell Injury. Appl Biochem Biotechnol 2023; 195:7060-7074. [PMID: 36976509 DOI: 10.1007/s12010-023-04434-9] [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] [Accepted: 03/15/2023] [Indexed: 03/29/2023]
Abstract
Asthma is a frequently chronic respiratory disease with inflammation and remodeling in the airway. OTUB1 has been reported to be associated with pulmonary diseases. However, the role and potential mechanism of OTUB1 in asthma remain unclear. The expressions of OTUB1 in the bronchial mucosal tissues of asthmatic children and TGF-β1-induced BEAS-2B cells were determined. The biological behaviors were assessed in an asthma in vitro model using a loss-function approach. The contents of inflammatory cytokines were detected by ELISA kits. The related protein expressions were performed using western blot assay. Besides, the interaction between OTUB1 and TRAF3 was detected by Co-IP and ubiquitination assays. Our results showed that OTUB1 level was increased in asthmatic bronchial mucosal tissues and TGF-β1-induced BEAS-2B cells. OTUB1 knockdown promoted proliferation, inhibited apoptosis and EMT of TGF-β1-treated cells. The inhibition of OTUB1 attenuated the TGF-β1-induced inflammation and remodeling. Furthermore, OTUB1 knockdown inhibited the deubiquitination of TRAF3 and further suppressed the activation of NLRP3 inflammasome. The overexpression of TRAF3 or NLRP3 reversed the positive role of OTUB1 knockdown in TGF-β1-induced cells injury. Collectively, OTUB1 deubiquitinates TRAF3 to activate NLRP3 inflammasome, thereby leading to inflammation and remodeling of TGF-β1-induced cells, and further promoting the pathogenesis of asthma.
Collapse
Affiliation(s)
- Liqun Shang
- Department of Respiratory and Critical Care Medicine, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China
| | - Yujie Du
- Department of Respiratory and Critical Care Medicine, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China
| | - Yali Zhao
- Department of Respiratory and Critical Care Medicine, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China
| | - Yongqing Zhang
- Department of Respiratory and Critical Care Medicine, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China
| | - Cuicui Liu
- Department of Respiratory and Asthma, Xi'an Children's Hospital, Xi'an, 710003, Shaanxi, China.
| |
Collapse
|
10
|
Lee Y, Piao HL, Kim J. OTUD7B Activates Wnt Signaling Pathway through the Interaction with LEF1. Biomolecules 2023; 13:1001. [PMID: 37371581 DOI: 10.3390/biom13061001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 06/04/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
The Wnt signaling pathway plays a critical role in regulating normal cellular processes, including proliferation, differentiation, and apoptosis. Dysregulation of Wnt signaling has been implicated in various human diseases, including cancer. β-catenin and LEF1 are key mediators of Wnt signaling, and their dysregulation is a hallmark of many cancer types. In this study, we aimed to identify the deubiquitinases (DUBs) that regulate the Wnt signaling pathway through the essential component LEF1. Screening candidate DUBs from the human DUB library, we discovered that OTUD7B interacts with LEF1 and activates Wnt signaling. OTUD7B and LEF1 interact with each other through the UBA and HMG domains, respectively. Furthermore, OTUD7B promotes the nuclear localization of LEF1, leading to an increased interaction with β-catenin in the nucleus while not noticeably affecting ubiquitination on LEF1. Using qPCR array analysis, we found that OTUD7B overexpression leads to an upregulation of 75% of the tested Wnt target genes compared to the control. These findings suggest that OTUD7B may serve as a potential therapeutic target in human diseases, including cancers where Wnt signaling is frequently dysregulated.
Collapse
Affiliation(s)
- Yuri Lee
- Department of Life Sciences, Sogang University, Seoul 04107, Republic of Korea
| | - Hai-Long Piao
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Jongchan Kim
- Department of Life Sciences, Sogang University, Seoul 04107, Republic of Korea
| |
Collapse
|
11
|
Liu X, Xu J, Shen B, Xu J, Jiang J. USP33 promotes pancreatic cancer malignant phenotype through the regulation of TGFBR2/TGFβ signaling pathway. Cell Death Dis 2023; 14:362. [PMID: 37322017 PMCID: PMC10272277 DOI: 10.1038/s41419-023-05871-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 04/07/2023] [Accepted: 05/31/2023] [Indexed: 06/17/2023]
Abstract
Pancreatic cancer (PC) ranked fourth among cancer-related death worldwide with a survival rate less than 5%. The abnormal proliferation and distant metastasis are major obstacles for the diagnosis and treatment of pancreatic cancer, therefore, it is urgent for researchers to uncover the molecular mechanisms underlying the PC proliferation and metastasis. In current study, we found that USP33, a member of deubiquitinating enzyme family, was upregulated among PC samples and cells, meanwhile, the high expression of USP33 correlated with poor prognosis of patients. Function experiments revealed that USP33 overexpression promoted the proliferation, migration and invasion of PC cells while the inhibition of USP33 expression in PC cells exhibited the opposite effect. The mass spectrum and luciferase complementation assay screened TGFBR2 as the potential binding protein of USP33. Mechanistically, USP33 triggered the deubiquitination of TGFBR2 and prevented its degradation by lysosome, therefore promoted TGFBR2 accumulation in cell membrane and eventually contributed to the sustained activation of TGF-β signaling. Moreover, our results revealed that the activation of TGF-β targeted gene ZEB1 promoted the transcription of USP33. In conclusion, our study found that USP33 contributed to the proliferation and metastasis of pancreatic cancer through a positive feedback loop with TGF-β signaling pathway. Moreover, this study suggested that USP33 may serve as a potential prognostic and therapeutic target in PC.
Collapse
Affiliation(s)
- Xinyuan Liu
- Department of Hepatobiliary Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Jian Xu
- Department of Hepatobiliary Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Bingbing Shen
- Department of Hepatobiliary Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Jichuan Xu
- Department of Hepatobiliary Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Jianxin Jiang
- Department of Hepatobiliary Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China.
| |
Collapse
|
12
|
Chen W, Xu D, Liu Q, Wu Y, Wang Y, Yang J. Unraveling the heterogeneity of cholangiocarcinoma and identifying biomarkers and therapeutic strategies with single-cell sequencing technology. Biomed Pharmacother 2023; 162:114697. [PMID: 37060660 DOI: 10.1016/j.biopha.2023.114697] [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: 02/21/2023] [Revised: 04/06/2023] [Accepted: 04/10/2023] [Indexed: 04/17/2023] Open
Abstract
Cholangiocarcinoma (CCA) is a common malignant tumor of the biliary tract that carries a high burden of morbidity and a poor prognosis. Due to the lack of precise diagnostic methods, many patients are often diagnosed at advanced stages of the disease. The current treatment options available are of varying efficacy, underscoring the urgency for the discovery of more effective biomarkers for early diagnosis and improved treatment. Recently, single-cell sequencing (SCS) technology has gained popularity in cancer research. This technology has the ability to analyze tumor tissues at the single-cell level, thus providing insights into the genomics and epigenetics of tumor cells. It also serves as a practical approach to study the mechanisms of cancer progression and to explore therapeutic strategies. In this review, we aim to assess the heterogeneity of CCA using single-cell sequencing technology, with the ultimate goal of identifying possible biomarkers and potential treatment targets.
Collapse
Affiliation(s)
- Wangyang Chen
- Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310003, China; Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310003, China; Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Hangzhou, Zhejiang Province 310003, China; Hangzhou Institute of Digestive Diseases, Hangzhou, Zhejiang Province 310003, China
| | - Dongchao Xu
- Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310003, China; Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310003, China; Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Hangzhou, Zhejiang Province 310003, China; Hangzhou Institute of Digestive Diseases, Hangzhou, Zhejiang Province 310003, China
| | - Qiang Liu
- Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310003, China; Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310003, China; Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Hangzhou, Zhejiang Province 310003, China; Hangzhou Institute of Digestive Diseases, Hangzhou, Zhejiang Province 310003, China
| | - Yirong Wu
- Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310003, China
| | - Yu Wang
- Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310003, China; Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310003, China; Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Hangzhou, Zhejiang Province 310003, China; Hangzhou Institute of Digestive Diseases, Hangzhou, Zhejiang Province 310003, China.
| | - Jianfeng Yang
- Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310003, China; Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310003, China; Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Hangzhou, Zhejiang Province 310003, China; Hangzhou Institute of Digestive Diseases, Hangzhou, Zhejiang Province 310003, China; Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Hangzhou, Zhejiang Province 310003, China; Zhejiang Provincial Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research, Hangzhou, Zhejiang Province 310003, China.
| |
Collapse
|
13
|
Wang X, Lu M, Gu H, Xiao T, Hu G, Luo M, Guo X, Xia Y. Conjugation of the Fn14 Ligand to a SMAC Mimetic Selectively Suppresses Experimental Squamous Cell Carcinoma in Mice. J Invest Dermatol 2023; 143:242-253.e6. [PMID: 36063885 DOI: 10.1016/j.jid.2022.08.039] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 07/26/2022] [Accepted: 08/05/2022] [Indexed: 02/05/2023]
Abstract
The mimetic of SMAC induced cell death in cancers by depleting the inhibitor of apoptosis proteins. Recent studies showed that Fn14 is overexpressed in the cells of squamous cell carcinoma (SCC), providing a promising candidate target for selective antitumor therapy. In this study, we conjugated a small-molecule SMAC mimetic MV1 to the ligand of Fn14, TWEAK. Our results showed that TWEAK‒MV1 conjugate retained adequate binding specificity to Fn14-positive SCC cells in vitro and accumulated selectively in tumor tissue of cutaneous SCC xenografts mice after intraperitoneal administration. This conjugation compound exhibited remarkable effectiveness in suppressing tumor growth and extending overall survival without causing significant side effects in SCC xenograft mice. Moreover, TWEAK‒MV1 conjugate greatly enhanced both apoptotic and necroptotic cell death both in vitro and in vivo, accompanied by a cellular inhibitor of apoptosis proteins degradation as well as activation of receptor-interacting protein kinase. Taken together, our preclinical data suggested that the designed conjugation compound of TWEAK and MV1 might provide a potential therapeutic strategy for cutaneous SCC with improved antitumor efficacy and negligible toxicity.
Collapse
Affiliation(s)
- Xiaoyu Wang
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Mei Lu
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Hanjiang Gu
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Tong Xiao
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Guanglei Hu
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Mai Luo
- Core Research Laboratory, The Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - Xingyi Guo
- Division of Epidemiology, Department of Medicine, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennesse, USA
| | - Yumin Xia
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
| |
Collapse
|
14
|
Zhang J, Zha Y, Jiao Y, Li Y, Zhang S. Protective role of cezanne in doxorubicin-induced cardiotoxicity by inhibiting autophagy, apoptosis and oxidative stress. Toxicology 2023; 485:153426. [PMID: 36639017 DOI: 10.1016/j.tox.2023.153426] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/30/2022] [Accepted: 01/09/2023] [Indexed: 01/11/2023]
Abstract
Doxorubicin (DOX) is frequently used in clinical practice for its broad-spectrum effects. However, its benefit is limited by a series of complications, including excessive apoptosis and autophagy of cardiomyocytes, overproduction of reactive oxygen species (ROS) and high level of oxidative stress. As a new protein, OTU domain-containing 7B (OTUD7B), also called Cezanne, has been reported to regulate many pathological processes. However, whether it plays a role in DOX-induced cardiotoxicity is still unclear. We discovered that the Cezanne level was significantly increased in DOX-treated neonatal rat cardiomyocytes (NRCMs) and C57BL/6 J mice hearts. In vitro, the knockdown of Cezanne with adenovirus in NRCMs significantly worsened DOX-induced apoptosis, autophagy and oxidative stress, while Cezanne overexpression showed opposite results. In vivo, the overexpression of Cezanne using cardiomyocyte-targeted adeno-associated virus 9 (AAV9) significantly reduced cardiomyocyte apoptosis, autophagy and oxidative stress level when C57BL/6 J mice were subjected to DOX. Mechanistically, the overexpression of Cezanne significantly reversed the in-activation of the PI3K/AKT/mTOR pathway induced by DOX, while the inhibitors of this pathway abolished the effect of Cezanne, suggesting that the PI3K/AKT/mTOR pathway plays a role in the protective function of Cezanne. These findings indicate that Cezanne could ameliorate DOX-induced cardiotoxicity by attenuating the apoptosis and autophagy of cardiomyocytes and decreasing the level of oxidative stress.
Collapse
Affiliation(s)
- Jiayan Zhang
- Department of Cardiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Road, Shanghai 200127, China
| | - Yafang Zha
- Department of Cardiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Road, Shanghai 200127, China
| | - Yuheng Jiao
- Department of Cardiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Road, Shanghai 200127, China
| | - Yanyan Li
- Department of Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai 200092, China
| | - Song Zhang
- Department of Cardiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Road, Shanghai 200127, China.
| |
Collapse
|
15
|
Jung J, Gokhale S, Xie P. TRAF3: A novel regulator of mitochondrial physiology and metabolic pathways in B lymphocytes. Front Oncol 2023; 13:1081253. [PMID: 36776285 PMCID: PMC9911533 DOI: 10.3389/fonc.2023.1081253] [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: 10/27/2022] [Accepted: 01/13/2023] [Indexed: 01/28/2023] Open
Abstract
Mitochondria, the organelle critical for cell survival and metabolism, are exploited by cancer cells and provide an important therapeutic target in cancers. Mitochondria dynamically undergo fission and fusion to maintain their diverse functions. Proteins controlling mitochondrial fission and fusion have been recognized as essential regulators of mitochondrial functions, mitochondrial quality control, and cell survival. In a recent proteomic study, we identified the key mitochondrial fission factor, MFF, as a new interacting protein of TRAF3, a known tumor suppressor of multiple myeloma and other B cell malignancies. This interaction recruits the majority of cytoplasmic TRAF3 to mitochondria, allowing TRAF3 to regulate mitochondrial morphology, mitochondrial functions, and mitochondria-dependent apoptosis in resting B lymphocytes. Interestingly, recent transcriptomic, metabolic and lipidomic studies have revealed that TRAF3 also vitally regulates multiple metabolic pathways in B cells, including phospholipid metabolism, glucose metabolism, and ribonucleotide metabolism. Thus, TRAF3 emerges as a novel regulator of mitochondrial physiology and metabolic pathways in B lymphocytes and B cell malignancies. Here we review current knowledge in this area and discuss relevant clinical implications.
Collapse
Affiliation(s)
- Jaeyong Jung
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, NJ, United States.,Graduate Program in Cellular and Molecular Pharmacology, Rutgers University, Piscataway, NJ, United States
| | - Samantha Gokhale
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, NJ, United States.,Graduate Program in Cellular and Molecular Pharmacology, Rutgers University, Piscataway, NJ, United States
| | - Ping Xie
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, NJ, United States.,Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, United States
| |
Collapse
|
16
|
Chen S, Cai K, Zheng D, Liu Y, Li L, He Z, Sun C, Yu C. RHBDL2 promotes the proliferation, migration, and invasion of pancreatic cancer by stabilizing the N1ICD via the OTUD7B and activating the Notch signaling pathway. Cell Death Dis 2022; 13:945. [PMID: 36351890 PMCID: PMC9646733 DOI: 10.1038/s41419-022-05379-3] [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: 07/15/2022] [Revised: 10/21/2022] [Accepted: 10/26/2022] [Indexed: 11/11/2022]
Abstract
Pancreatic cancer (PC) is one of the most malignant types of cancer, and is characterized by early metastasis, limited response to chemotherapeutics, and poor prognosis. Therefore, there is an urgent need to explore new therapeutic strategies for PC treatment. Human rhomboid-like 2 (RHBDL2) is differentially expressed in cervical and breast cancer. However, the correlation between RHBDL2 and PC remains unclear. We found that RHBDL2 is highly expressed in human PC cells and tissues and is significantly associated with distant metastasis and poor survival of patients with PC. Gain- and loss-of-function assays indicated that RHBDL2 could accelerate PC cell proliferation and mobility in vitro and in vivo. The RNA-Seq results suggest that RHBDL2 may be involved in the activation of Notch signaling pathway. IMR-1 could restore the proliferation and metastatic capacity of PC cells mediated by RHBDL2. RHBDL2 interacted with and cleaved Notch1, resulting in the release of N1ICD. RHBDL2 decreased the ubiquitination level of N1ICD and collaborated with Ovarian tumor domain-containing 7B (OTUD7B) to stabilize N1ICD via the ubiquitin-proteasome pathway. RHBDL2 facilitated PC cell proliferation and mobility by stabilizing the N1ICD via the OTUD7B and activating the Notch signaling pathway. Thus, targeting this novel pathway may be a potential therapeutic strategy for PC.
Collapse
Affiliation(s)
- Shiyu Chen
- grid.452244.1Department of Hepatobiliary Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004 China ,Guizhou Provincial Institute of Hepatobiliary, Pancreatic and Splenic Diseases, Guiyang, Guizhou 550004 China ,Guizhou Provincial Clinical Medical Research Center of Hepatobiliary Surgery, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Key Laboratory of Liver, Gallbladder, Pancreas and Spleen of Guizhou Medical University, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891School of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Department of Translational Medicine, College of Clinical Medicine, Guizhou Medical University, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Guizhou Medical University, Guiyang, Guizhou 550004 China
| | - Kun Cai
- grid.452244.1Department of Hepatobiliary Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004 China ,Guizhou Provincial Institute of Hepatobiliary, Pancreatic and Splenic Diseases, Guiyang, Guizhou 550004 China ,Guizhou Provincial Clinical Medical Research Center of Hepatobiliary Surgery, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Key Laboratory of Liver, Gallbladder, Pancreas and Spleen of Guizhou Medical University, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Guizhou Medical University, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Department of Surgery, College of Clinical Medicine, Guizhou Medical University, Guiyang, Guizhou 550004 China
| | - Dijie Zheng
- grid.452244.1Department of Hepatobiliary Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004 China ,Guizhou Provincial Institute of Hepatobiliary, Pancreatic and Splenic Diseases, Guiyang, Guizhou 550004 China ,Guizhou Provincial Clinical Medical Research Center of Hepatobiliary Surgery, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Key Laboratory of Liver, Gallbladder, Pancreas and Spleen of Guizhou Medical University, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891School of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Guizhou Medical University, Guiyang, Guizhou 550004 China
| | - Yanqing Liu
- grid.452244.1Department of Hepatobiliary Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004 China ,Guizhou Provincial Institute of Hepatobiliary, Pancreatic and Splenic Diseases, Guiyang, Guizhou 550004 China ,Guizhou Provincial Clinical Medical Research Center of Hepatobiliary Surgery, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Key Laboratory of Liver, Gallbladder, Pancreas and Spleen of Guizhou Medical University, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891School of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Department of Translational Medicine, College of Clinical Medicine, Guizhou Medical University, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Guizhou Medical University, Guiyang, Guizhou 550004 China
| | - Lin Li
- grid.452244.1Department of Hepatobiliary Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004 China ,Guizhou Provincial Institute of Hepatobiliary, Pancreatic and Splenic Diseases, Guiyang, Guizhou 550004 China ,Guizhou Provincial Clinical Medical Research Center of Hepatobiliary Surgery, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Key Laboratory of Liver, Gallbladder, Pancreas and Spleen of Guizhou Medical University, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891School of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Department of Translational Medicine, College of Clinical Medicine, Guizhou Medical University, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Guizhou Medical University, Guiyang, Guizhou 550004 China
| | - Zhiwei He
- grid.452244.1Department of Hepatobiliary Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004 China ,Guizhou Provincial Institute of Hepatobiliary, Pancreatic and Splenic Diseases, Guiyang, Guizhou 550004 China ,Guizhou Provincial Clinical Medical Research Center of Hepatobiliary Surgery, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Key Laboratory of Liver, Gallbladder, Pancreas and Spleen of Guizhou Medical University, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Guizhou Medical University, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Department of Surgery, College of Clinical Medicine, Guizhou Medical University, Guiyang, Guizhou 550004 China
| | - Chengyi Sun
- grid.452244.1Department of Hepatobiliary Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004 China ,Guizhou Provincial Institute of Hepatobiliary, Pancreatic and Splenic Diseases, Guiyang, Guizhou 550004 China ,Guizhou Provincial Clinical Medical Research Center of Hepatobiliary Surgery, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Key Laboratory of Liver, Gallbladder, Pancreas and Spleen of Guizhou Medical University, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Guizhou Medical University, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Department of Surgery, College of Clinical Medicine, Guizhou Medical University, Guiyang, Guizhou 550004 China
| | - Chao Yu
- grid.452244.1Department of Hepatobiliary Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004 China ,Guizhou Provincial Institute of Hepatobiliary, Pancreatic and Splenic Diseases, Guiyang, Guizhou 550004 China ,Guizhou Provincial Clinical Medical Research Center of Hepatobiliary Surgery, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Key Laboratory of Liver, Gallbladder, Pancreas and Spleen of Guizhou Medical University, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Guizhou Medical University, Guiyang, Guizhou 550004 China ,grid.413458.f0000 0000 9330 9891Department of Surgery, College of Clinical Medicine, Guizhou Medical University, Guiyang, Guizhou 550004 China
| |
Collapse
|
17
|
Xie W, Tian S, Yang J, Cai S, Jin S, Zhou T, Wu Y, Chen Z, Ji Y, Cui J. OTUD7B deubiquitinates SQSTM1/p62 and promotes IRF3 degradation to regulate antiviral immunity. Autophagy 2022; 18:2288-2302. [PMID: 35100065 PMCID: PMC9542415 DOI: 10.1080/15548627.2022.2026098] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Deubiquitination plays an important role in the regulation of the crosstalk between macroautophagy/autophagy and innate immune signaling, yet its regulatory mechanisms are not fully understood. Here we identify the deubiquitinase OTUD7B as a negative regulator of antiviral immunity by targeting IRF3 (interferon regulatory factor 3) for selective autophagic degradation. Mechanistically, OTUD7B interacts with IRF3, and activates IRF3-associated cargo receptor SQSTM1/p62 (sequestosome 1) by removing its K63-linked poly-ubiquitin chains at lysine 7 (K7) to enhance SQSTM1 oligomerization. Moreover, viral infection increased the expression of OTUD7B, which forms a negative feedback loop by promoting IRF3 degradation to balance type I interferon (IFN) signaling. Taken together, our study reveals a specific role of OTUD7B in mediating the activation of cargo receptors in a substrate-dependent manner, which could be a potential target against excessive immune responses.Abbreviations: Baf A1: bafilomycin A1; CGAS: cyclic GMP-AMP synthase; DDX58/RIG-I: DExD/H-box helicase 58; DSS: dextran sodium sulfate; DUBs: deubiquitinating enzymes; GFP: green fluorescent protein; IFN: interferon; IKKi: IKBKB/IkappaB kinase inhibitor; IRF3: interferon regulatory factor 3; ISGs: interferon-stimulated genes; MAVS: mitochondrial antiviral signaling protein; MOI: multiplicity of infection; PAMPs: pathogen-associated molecular patterns; SeV: Sendai virus; siRNA: small interfering RNA; SQSTM1/p62: sequestosome 1; STING1: stimulator of interferon response cGAMP interactor 1; TBK1: TANK binding kinase 1; Ub: ubiquitin; WT: wild-type; VSV: vesicular stomatitis virus.
Collapse
Affiliation(s)
- Weihong Xie
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China,Huizhou Municipal Central Hospital, Huizhou, P.R.China
| | - Shuo Tian
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Jiahui Yang
- Huizhou Municipal Central Hospital, Huizhou, P.R.China
| | - Sihui Cai
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Shouheng Jin
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Tao Zhou
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Yaoxing Wu
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Zhiyun Chen
- Huizhou Municipal Central Hospital, Huizhou, P.R.China
| | - Yanqin Ji
- Huizhou Municipal Central Hospital, Huizhou, P.R.China,CONTACT Yanqin Ji Huizhou Municipal Central Hospital, Huizhou, Guangdong, 516001, P.R.China
| | - Jun Cui
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China,Jun Cui; School of Life Sciences, Sun Yat-sen University, 132 Waihuan East Road, Guangdong 510006, Guangdong, P.R.China
| |
Collapse
|
18
|
Yang C, Song D, Zhao F, Wu J, Zhang B, Ren H, Sun Q, Qin S. Comprehensive analysis of the prognostic value and immune infiltration of FGFR family members in gastric cancer. Front Oncol 2022; 12:936952. [PMID: 36147913 PMCID: PMC9487308 DOI: 10.3389/fonc.2022.936952] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 08/11/2022] [Indexed: 11/13/2022] Open
Abstract
Background Fibroblast growth factor receptors (FGFRs) modulate numerous cellular processes in tumor cells and tumor microenvironment. However, the effect of FGFRs on tumor prognosis and tumor-infiltrating lymphocytes in gastric cancer (GC) remains controversial. Methods The expression of four different types of FGFRs was analyzed via GEPIA, TCGA-STAD, and GTEX databases and our 27 pairs of GC tumor samples and the adjacent normal tissue. Furthermore, the Kaplan–Meier plot and the TCGA database were utilized to assess the association of FGFRs with clinical prognosis. The R software was used to evaluate FGFRs co-expression genes with GO/KEGG Pathway Enrichment Analysis. In vitro and in vivo functional analyses and immunoblotting were performed to verify FGFR4 overexpression consequence. Moreover, the correlation between FGFRs and cancer immune infiltrates was analyzed by TIMER and TCGA databases. And the efficacy of anti-PD-1 mAb treatment was examined in NOG mouse models with overexpressed FGFR1 or FGFR4. Results The expression of FGFRs was considerably elevated in STAD than in the normal gastric tissues and was significantly correlated with poor OS and PFS. ROC curve showed the accuracy of the FGFRs in tumor diagnosis, among which FGFR4 had the highest ROC value. Besides, univariate and multivariate analysis revealed that FGFR4 was an independent prognostic factor for GC patients. According to a GO/KEGG analysis, the FGFRs were implicated in the ERK/MAPK, PI3K-AKT and extracellular matrix (ECM) receptor signaling pathways. In vivo and in vitro studies revealed that overexpression of FGFR4 stimulated GC cell proliferation, invasion, and migration. In addition, FGFR1 expression was positively correlated with infiltrating levels of CD8+ T-cells, CD4+ T-cells, macrophages, and dendritic cells in STAD. In contrast, FGFR4 expression was negatively correlated with tumor-infiltrating lymphocytes. Interestingly, overexpression of FGFR1 in the NOG mouse model improved the immunotherapeutic impact of GC, while overexpression of FGFR4 impaired the effect. When combined with an FGFR4 inhibitor, the anti-tumor effect of anti-PD-1 treatment increased significantly in a GC xenograft mouse model with overexpressed FGFR4. Conclusions FGFRs has critical function in GC and associated with immune cell infiltration, which might be a potential prognosis biomarker and predictor of response to immunotherapy in GC.
Collapse
Affiliation(s)
- Chengcheng Yang
- Department of Oncology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Dingli Song
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Fengyu Zhao
- Department of Oncology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Jie Wu
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Boxiang Zhang
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Hong Ren
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Qi Sun
- Department of General Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
- *Correspondence: Sida Qin, ; Qi Sun,
| | - Sida Qin
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
- *Correspondence: Sida Qin, ; Qi Sun,
| |
Collapse
|
19
|
Song D, Zhou Z, Wu J, Wei T, Zhao G, Ren H, Zhang B. DNA methylation regulators-related molecular patterns and tumor immune landscape in hepatocellular carcinoma. Front Oncol 2022; 12:877817. [PMID: 36091162 PMCID: PMC9459088 DOI: 10.3389/fonc.2022.877817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 07/18/2022] [Indexed: 12/02/2022] Open
Abstract
Increasing evidence showed that the dysregulation of DNA methylation regulators is a decisive feature of almost all cancer types and affects tumor progressions. However, few studies focused on the underlying influences of DNA methylation regulators-related genes (DMRegs) in immune cell-infiltration characteristics, tumor microenvironment (TME) and immunotherapy in HCC patients. In our study, the alterations of DNA methylation regulators modification patterns (DMRPs) were clustered from hepatocellular carcinoma (HCC) samples based on the expression of DNA methylation regulators as well as genetic and transcriptional features. In addition, based on molecular identification of three distinct molecular subtypes, we found that different DMRPs alterations were related to different clinicopathological characteristics, prognosis, and immune cells infiltration features. Moreover, we constructed and validated a DNA methylation regulators-related genes score (DMRegs_score) to predict the survival of HCC patients. A high DMRegs _score, which was characterized by more TP53 wild mutation, high expression of PD-1, CTLA-4, and remarkable immunity activation, was indicative of poor prognosis. Furthermore, we validated the expression of eight genes which were used for the prognostic signature in this risk score by RT-qPCR using tissues from our center. More importantly, DMRegs_score was highly correlated with targeted drug sensitivity. Additionally, we developed a highly accurate scoring system that could be used to improve the clinical applicability of DMRegs _score. In conclusion, these findings may contribute to a better understanding of DNA methylation regulators and provide new strategies for evaluating prognosis and developing more effective combination therapy for HCC patients.
Collapse
Affiliation(s)
- Dingli Song
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Zhenyu Zhou
- Department of Hepatobiliary Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Jie Wu
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Tao Wei
- Department of Hepatobiliary and Pancreatic Surgery, School of Medicine, The First Affiliated Hospital of Zhejiang University, Hangzhou, China
| | - Guang Zhao
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Hong Ren
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
- *Correspondence: Hong Ren, ; Boxiang Zhang,
| | - Boxiang Zhang
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
- *Correspondence: Hong Ren, ; Boxiang Zhang,
| |
Collapse
|
20
|
Song D, Zhou Z, Zhang D, Wu J, Hao Q, Zhao L, Ren H, Zhang B. Identification of an Endoplasmic Reticulum Stress-Related Gene Signature to Evaluate the Immune Status and Predict the Prognosis of Hepatocellular Carcinoma. Front Genet 2022; 13:850200. [PMID: 35711939 PMCID: PMC9197218 DOI: 10.3389/fgene.2022.850200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 04/15/2022] [Indexed: 12/21/2022] Open
Abstract
Liver cancer is the sixth most frequently diagnosed primary malignancy and ranks as the third leading cause of cancer-related death worldwide in 2020. ER stress also plays a vital role in the pathogenesis of malignancies. In the current study, we aimed to construct an endoplasmic reticulum stress-related genes (ERGs) signature to predict the overall survival (OS) of patients with HCC. Differentially expressed ERGs (DE-ERGs) were analyzed using The Cancer Genome Atlas (TCGA-LIHC cohort) and International Cancer Genome Consortium (ICGC-LIRI-JP cohort) databases. The prognostic gene signature was identified by the univariate Cox regression and Least Absolute Shrinkage and Selection Operator (LASSO)-penalized Cox proportional hazards regression analysis. The predictive ability of the model was evaluated by utilizing Kaplan-Meier curves and time-dependent receiver operating characteristic (ROC) curves. Gene set variant analysis (GSVA) was performed to explore the underlying biological processes and signaling pathways. CIBERPORT and single-sample Gene Set Enrichment Analysis (ssGSEA) were implemented to estimate the immune status between the different risk groups. A total of 113 DE-ERGs were identified between 50 normal samples and 365 HCC samples in the TCGA-LIHC cohort, and 48 DE-ERGs were associated with OS through the univariate Cox regression. A six DE-ERGs (PPARGC1A, SQSTM1, SGK1, PON1, CDK1, and G6PD) signature was constructed and classified patients into high-risk and low-risk groups. The risk score was an independent prognostic indicator for OS (HR > 1, p < 0.001). The function enrichment analysis indicated that cell cycle, RNA degradation, protein localization, and cell division were the main biological processes. The high-risk group had higher immune cell infiltration levels than those of the low-risk group. We predicted the response to targeted therapy in high- and low-risk patients with HCC and found that the high-risk patients were more sensitive to pazopanib. At last, we verified the expression of the six gene patterns in HCC tissues by qRT-PCR and immunohistochemistry. This signature may be a potential tool to provide a choice for prognosis prediction and personal management of patients with HCC.
Collapse
Affiliation(s)
- Dingli Song
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Zhenyu Zhou
- Department of Hepatobiliary Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Dai Zhang
- Department of Thyroid, Breast and Vascular Surgery, Xijing Hospital, the Air Force Medical University, Xi'an, China
| | - Jie Wu
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Qian Hao
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Lili Zhao
- Department of Neurology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Hong Ren
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Boxiang Zhang
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| |
Collapse
|
21
|
Ubiquitin specific peptidase 11 as a novel therapeutic target for cancer management. Cell Death Dis 2022; 8:292. [PMID: 35715413 PMCID: PMC9205893 DOI: 10.1038/s41420-022-01083-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/06/2022] [Accepted: 06/07/2022] [Indexed: 11/25/2022]
Abstract
Ubiquitination is a critical biological process in post-translational modification of proteins and involves multiple signaling pathways in protein metabolism, apoptosis, DNA damage, cell-cycle progression, and cancer development. Deubiquitinase, a specific enzyme that regulates the ubiquitination process, is also thought to be closely associated with the development and progression of various cancers. In this article, we systematically review the emerging role of the deubiquitinase ubiquitin-specific peptidase 11 (USP11) in many cancer-related pathways. The results show that USP11 promotes or inhibits the progression and chemoresistance of different cancers, including colorectal, breast, ovarian, and hepatocellular carcinomas, via deubiquitinating several critical proteins of cancer-related pathways. We initially summarize the role of USP11 in different cancers and further discuss the possibility of USP11 as a therapeutic strategy.
Collapse
|
22
|
OTUD7B (Cezanne) ameliorates fibrosis after myocardial infarction via FAK-ERK/P38 MAPK signaling pathway. Arch Biochem Biophys 2022; 724:109266. [PMID: 35523269 DOI: 10.1016/j.abb.2022.109266] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 04/21/2022] [Accepted: 04/22/2022] [Indexed: 11/21/2022]
Abstract
Fibrosis is one of the crucial reasons for cardiac dysfunction after myocardial infarction (MI). Understanding the underlying molecular mechanism that causes fibrosis is crucial to developing effective therapy. Recently, OUT domain-containing 7B (OTUD7B), also called Cezanne, a multifunctional deubiquitylate, has been found to play various roles in cancer and vascular diseases and control many important signaling pathways, including inflammation, proliferation, and so on. However, whether OTUD7B plays a role in fibrosis caused by MI remains unclear. Our study aimed to explore the function of OTUD7B in cardiac fibrosis and investigate the underlying mechanism. We found that the expression of OTUD7B was downregulated in the MI rat model and cultured cardiac fibroblasts (CFs) in hypoxic conditions and after TGF-β1 treatment. In vitro, silencing OTUD7B using small interfering RNA (siRNA) increased α-SMA (smooth muscle actin α) and collagen Ⅰ levels in CFs, whereas the overexpression of OTUD7B using adenovirus decreased their expression. Mechanistically, OTUD7B could regulate the phosphorylation of focal adhesion kinase (FAK), a non-receptor tyrosine kinase that has been proved to act as a potential mediator of fibrosis, and ERK/P38 MAPK was involved in this regulation process. In vitro, overexpression of OTUD7B downregulated the phosphorylation level of FAK and then inhibited ERK/P38 phosphorylation, thus leading to decreased α-SMA and collagen Ⅰ expressions, while OTUD7B knockdown showed an opposite result. These findings suggest that OTUD7B could become a potentially effective therapeutic strategy against fibrosis after MI.
Collapse
|
23
|
Almuradova E, Malik DES, Yousaf S, Farooqi A. Overview of the progress and prospects of SMAC mimetics in cancers: Is it a silver bullet? ARHIV ZA FARMACIJU 2022. [DOI: 10.5937/arhfarm72-39318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
Loss of apoptosis results in the survival and uncontrolled proliferation of cancer cells. Basic and clinical researchers have dissected myriads of central regulators of apoptosis. Second mitochondria-derived activator of caspases (SMAC)/ direct inhibitor of apoptosis protein (IAP)-binding protein with low pI (DIABLO) has attracted phenomenal attention because of its amazing ability to trigger apoptotic death. Accordingly, different teams of interdisciplinary researchers are working on the design and development of SMAC mimetics which can significantly inhibit primary and secondary tumor growth.
Collapse
|