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Pan D, Di X, Yan B, Su X. Advances in the Study of Non-Coding RNA in the Signaling Pathway of Pulmonary Fibrosis. Int J Gen Med 2024; 17:1419-1431. [PMID: 38617054 PMCID: PMC11016256 DOI: 10.2147/ijgm.s455707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 03/24/2024] [Indexed: 04/16/2024] Open
Abstract
Pulmonary fibrosis is a group of chronic, progressive, and irreversible interstitial lung diseases, which are common to most end-stage lung diseases and are one of the most difficult diseases of the respiratory system. In recent years, due to the frequent occurrence of air pollution and smog, the incidence of pulmonary fibrosis in China has increased year by year, the morbidity and mortality rates of pulmonary fibrosis have gradually increased and the age of the disease tends to be younger. However, the pathogenesis of pulmonary fibrosis is not yet fully understood and is needed to further explore new drug targets. Studies have shown that non-coding RNAs play an important role in regulating the process of pulmonary fibrosis, non-coding RNAs and their specifically expressed can promote or inhibit the process. Here, we review the role of some in the regulation of pulmonary fibrosis signaling pathways and provide new ideas for the clinical diagnosis and treatment of pulmonary fibrosis.
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Affiliation(s)
- Dengyun Pan
- Department of Respiratory Medicine, The Second Hospital of Jilin University, Changchun, People’s Republic of China
| | - Xin Di
- Department of Respiratory Medicine, The Second Hospital of Jilin University, Changchun, People’s Republic of China
| | - Bingdi Yan
- Department of Respiratory Medicine, The Second Hospital of Jilin University, Changchun, People’s Republic of China
| | - Xiaomin Su
- Department of Respiratory Medicine, The Second Hospital of Jilin University, Changchun, People’s Republic of China
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2
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Taleb SJ, Ye Q, Baoyinna B, Dedad M, Pisini D, Parinandi NL, Cantley LC, Zhao J, Zhao Y. Molecular Regulation of Transforming Growth Factor-β1-induced Thioredoxin-interacting Protein Ubiquitination and Proteasomal Degradation in Lung Fibroblasts: Implication in Pulmonary Fibrosis. JOURNAL OF RESPIRATORY BIOLOGY AND TRANSLATIONAL MEDICINE 2024; 1:10002. [PMID: 38529321 PMCID: PMC10962057 DOI: 10.35534/jrbtm.2024.10002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
Thioredoxin-interacting protein (TXNIP) plays a critical role in regulation of cellular redox reactions and inflammatory responses by interacting with thioredoxin (TRX) or the inflammasome. The role of TXNIP in lung fibrosis and molecular regulation of its stability have not been well studied. Therefore, here we investigated the molecular regulation of TXNIP stability and its role in TGF-β1-mediated signaling in lung fibroblasts. TXNIP protein levels were significantly decreased in lung tissues from bleomycin-challenged mice. Overexpression of TXNIP attenuated transforming growth factor-β1 (TGF-β1)-induced phosphorylation of Smad2/3 and fibronectin expression in lung fibroblasts, suggesting that decrease in TXNIP may contribute to the pathogenesis of lung fibrosis. Further, we observed that TGF-β1 lowered TXNIP protein levels, while TXNIP mRNA levels were unaltered by TGF-β1 exposure. TGF-β1 induced TXNIP degradation via the ubiquitin-proteasome system. A serine residue mutant (TNXIP-S308A) was resistant to TGF-β1-induced degradation. Furthermore, downregulationof ubiquitin-specific protease-13 (USP13) promoted the TGF-β1-induced TXNIP ubiquitination and degradation. Mechanistic studies revealed that USP13 targeted and deubiquitinated TXNIP. The results of this study revealed that the decrease of TXNIP in lungs apparently contributes to the pathogenesis of pulmonary fibrosis and that USP13 can target TXNP for deubiquitination and regulate its stability.
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Affiliation(s)
- Sarah J Taleb
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Qinmao Ye
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Boina Baoyinna
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Michael Dedad
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Dakshin Pisini
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | | | - Lewis C Cantley
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Jing Zhao
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
- Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Yutong Zhao
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
- Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
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3
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Xu Y, Qu M, He Y, He Q, Shen T, Luo J, Tan D, Bao H, Xu C, Ji X, Hu X, Barkat MQ, Zeng LH, Wu X. Smurf1 polyubiquitinates on K285/K282 of the kinases Mst1/2 to attenuate their tumor-suppressor functions. J Biol Chem 2023; 299:105395. [PMID: 37890777 PMCID: PMC10696403 DOI: 10.1016/j.jbc.2023.105395] [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: 04/11/2023] [Revised: 09/29/2023] [Accepted: 10/17/2023] [Indexed: 10/29/2023] Open
Abstract
Sterile 20-like kinases Mst1 and Mst2 (Mst1/2) and large tumor suppressor 1/2 are core kinases to mediate Hippo signaling in maintaining tissue homeostasis. We have previously demonstrated that Smad ubiquitin (Ub) regulatory factor 1 (Smurf1), a HECT-type E3 ligase, ubiquitinates and in turn destabilizes large tumor suppressor 1/2 to induce the transcriptional output of Hippo signaling. Here, we unexpectedly find that Smurf1 interacts with and polyubiquitinates Mst1/2 by virtue of K27- and K29-linked Ub chains, resulting in the proteasomal degradation of Mst1/2 and attenuation of their tumor-suppressor functions. Among the potential Ub acceptor sites on Mst1/2, K285/K282 are conserved and essential for Smurf1-induced polyubiquitination and degradation of Mst1/2 as well as transcriptional output of Hippo signaling. As a result, K285R/K282R mutation of Mst1/2 not only negates the transcriptional output of Hippo signaling but enhances the tumor-suppressor functions of Mst1/2. Together, we demonstrate that Smurf1-mediated polyubiquitination on K285/K282 of Mst1/2 destabilizes Mst1/2 to attenuate their tumor-suppressor functions. Thus, the present study identifies Smurf1-mediated ubiquitination of Mst1/2 as a hitherto uncharacterized mechanism fine-tuning the Hippo signaling pathway and may provide additional targets for therapeutic intervention of diseases associated with this important pathway.
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Affiliation(s)
- Yana Xu
- Department of Orthopaedics, The Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, China
| | - Meiyu Qu
- Department of Orthopaedics, The Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Novel Targets and Drug Study for Neural Repair of Zhejiang Province, Hangzhou City University School of Medicine, Hangzhou, China
| | - Yangxun He
- Department of Orthopaedics, The Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Qiangqiang He
- Department of Orthopaedics, The Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, China
| | - Tingyu Shen
- Department of Orthopaedics, The Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jiahao Luo
- Department of Orthopaedics, The Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Dan Tan
- Department of Orthopaedics, The Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Hangyang Bao
- Department of Orthopaedics, The Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Chengyun Xu
- Department of Orthopaedics, The Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xing Ji
- Department of Orthopaedics, The Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Novel Targets and Drug Study for Neural Repair of Zhejiang Province, Hangzhou City University School of Medicine, Hangzhou, China
| | - Xinhua Hu
- Department of Clinical Pharmacology, The Affiliated Second Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Muhammad Qasim Barkat
- Department of Orthopaedics, The Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Ling-Hui Zeng
- Key Laboratory of Novel Targets and Drug Study for Neural Repair of Zhejiang Province, Hangzhou City University School of Medicine, Hangzhou, China.
| | - Ximei Wu
- Department of Orthopaedics, The Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, China.
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4
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Zhang YS, Tu B, Song K, Lin LC, Liu ZY, Lu D, Chen Q, Tao H. Epigenetic hallmarks in pulmonary fibrosis: New advances and perspectives. Cell Signal 2023; 110:110842. [PMID: 37544633 DOI: 10.1016/j.cellsig.2023.110842] [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: 06/07/2023] [Revised: 07/25/2023] [Accepted: 08/03/2023] [Indexed: 08/08/2023]
Abstract
Epigenetics indicates that certain phenotypes of an organism can undergo heritable changes in the absence of changes in the genetic DNA sequence. Many studies have shown that epigenetic patterns play an important role in the lung and lung diseases. Pulmonary fibrosis (PF) is also a type of lung disease. PF is an end-stage change of a large group of lung diseases, characterized by fibroblast proliferation and massive accumulation of extracellular matrix, accompanied by inflammatory injury and histological destruction, that is, structural abnormalities caused by abnormal repair of normal alveolar tissue. It causes loss of lung function in patients with multiple complex diseases, leading to respiratory failure and subsequent death. However, current treatment options for IPF are very limited and no drugs have been shown to significantly prolong the survival of patients. Therefore, based on a systematic understanding of the disease mechanisms of PF, this review integrates the role of epigenetics in the development and course of PF, describes preventive and potential therapeutic targets for PF, and provides a theoretical basis for further exploration of the mechanisms of PF.
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Affiliation(s)
- Yun-Sen Zhang
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, PR China
| | - Bin Tu
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, PR China
| | - Kai Song
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, PR China
| | - Li-Chan Lin
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, PR China
| | - Zhi-Yan Liu
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, PR China
| | - Dong Lu
- Department of Interventional Radiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, PR China.
| | - Qi Chen
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, PR China.
| | - Hui Tao
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, PR China; Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, PR China.
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5
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Shi X, Pan Z, Cai W, Zhang Y, Duo J, Liu R, Cai T. Identification and immunological characterization of cuproptosis-related molecular clusters in idiopathic pulmonary fibrosis disease. Front Immunol 2023; 14:1171445. [PMID: 37266442 PMCID: PMC10230064 DOI: 10.3389/fimmu.2023.1171445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 05/05/2023] [Indexed: 06/03/2023] Open
Abstract
Background Idiopathic pulmonary fibrosis (IPF) has attracted considerable attention worldwide and is challenging to diagnose. Cuproptosis is a new form of cell death that seems to be associated with various diseases. However, whether cuproptosis-related genes (CRGs) play a role in regulating IPF disease is unknown. This study aims to analyze the effect of CRGs on the progression of IPF and identify possible biomarkers. Methods Based on the GSE38958 dataset, we systematically evaluated the differentially expressed CRGs and immune characteristics of IPF disease. We then explored the cuproptosis-related molecular clusters, the related immune cell infiltration, and the biological characteristics analysis. Subsequently, a weighted gene co-expression network analysis (WGCNA) was performed to identify cluster-specific differentially expressed genes. Lastly, the eXtreme Gradient Boosting (XGB) machine-learning model was chosen for the analysis of prediction and external datasets validated the predictive efficiency. Results Nine differentially expressed CRGs were identified between healthy and IPF patients. IPF patients showed higher monocytes and monophages M0 infiltration and lower naive B cells and memory resting T CD4 cells infiltration than healthy individuals. A positive relationship was found between activated dendritic cells and CRGs of LIPT1, LIAS, GLS, and DBT. We also identified cuproptosis subtypes in IPF patients. Go and KEGG pathways analysis demonstrated that cluster-specific differentially expressed genes in Cluster 2 were closely related to monocyte aggregation, ubiquitin ligase complex, and ubiquitin-mediated proteolysis, among others. We also constructed an XGB machine model to diagnose IPF, presenting the best performance with a relatively lower residual and higher area under the curve (AUC= 0.700) and validated by external validation datasets (GSE33566, AUC = 0.700). The analysis of the nomogram model demonstrated that XKR6, MLLT3, CD40LG, and HK3 might be used to diagnose IPF disease. Further analysis revealed that CD40LG was significantly associated with IPF. Conclusion Our study systematically illustrated the complicated relationship between cuproptosis and IPF disease, and constructed an effective model for the diagnosis of IPF disease patients.
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Affiliation(s)
- Xuefeng Shi
- Department of Experimental Medical Science, Ningbo No.2 Hospital, Ningbo, China
- Department of Pulmonary and Critial Care medicine, Qinghai provincial people’s hospital, Xining, China
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
| | - Zhilei Pan
- Department of Pulmonary and Critial Care medicine, Qinghai provincial people’s hospital, Xining, China
| | - Weixiu Cai
- Department of Pulmonary and Critial Care medicine, Qinghai provincial people’s hospital, Xining, China
| | - Yuhao Zhang
- Cancer Center, Department of Neurosurgery, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, China
| | - Jie Duo
- Department of Pulmonary and Critial Care medicine, Qinghai provincial people’s hospital, Xining, China
| | - Ruitian Liu
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
| | - Ting Cai
- Department of Experimental Medical Science, Ningbo No.2 Hospital, Ningbo, China
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6
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Liu Y, Li Z, Xiao H, Xie B, He J, Song M, Wang J, Geng J, Dai H, Wang C. USP13 Deficiency Impairs Autophagy and Facilitates Age-related Lung Fibrosis. Am J Respir Cell Mol Biol 2023; 68:49-61. [PMID: 36150040 DOI: 10.1165/rcmb.2022-0002oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is an age-related disease. Failure of the proteostasis network with age, including insufficient autophagy, contributes to the pathology of IPF. Mechanisms underlying autophagy disruption in IPF are unclear and may involve regulation of USP (ubiquitin-specific protease) by post-translational modifications. To expand our previous observation of low USP13 expression in IPF, this study evaluated the role of USP13 in age-related lung fibrosis. Here, we demonstrated that Usp13-deficient aged mice exhibited impaired autophagic activity and increased vulnerability to bleomycin-induced fibrosis. Mechanistically, USP13 interacted with and deubiquitinated Beclin 1, and Beclin 1 overexpression abolished the effects of USP13 disruption. In addition, Beclin 1 inhibition resulted in insufficient autophagy and more severe lung fibrosis after bleomycin injury, consistent with the phenotype of aged Usp13-deficient mice. Collectively, we show a protective role of USP13 in age-related pulmonary fibrosis. Aging-mediated USP13 loss impairs autophagic activity and facilitates lung fibrosis through Beclin 1 deubiquitination. Our findings support the notion that age-dependent dysregulation of autophagic regulators enhances vulnerability to lung fibrosis.
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Affiliation(s)
- Yuan Liu
- Graduate School of Peking Union Medical College and.,National Center for Respiratory Medicine; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China; and
| | - Zhen Li
- Graduate School of Peking Union Medical College and.,National Center for Respiratory Medicine; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China; and
| | - Huijuan Xiao
- National Center for Respiratory Medicine; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China; and.,School of Clinical Medicine, Peking University, Beijing, China
| | - Bingbing Xie
- National Center for Respiratory Medicine; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China; and
| | - Jiarui He
- National Center for Respiratory Medicine; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China; and
| | - Meiyue Song
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Jing Wang
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Jing Geng
- National Center for Respiratory Medicine; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China; and
| | - Huaping Dai
- Graduate School of Peking Union Medical College and.,National Center for Respiratory Medicine; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China; and
| | - Chen Wang
- Graduate School of Peking Union Medical College and.,State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China.,National Center for Respiratory Medicine; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China; and.,School of Clinical Medicine, Peking University, Beijing, China
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7
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Li X, Feng C, Peng S. Epigenetics alternation in lung fibrosis and lung cancer. Front Cell Dev Biol 2022; 10:1060201. [PMID: 36420141 PMCID: PMC9676258 DOI: 10.3389/fcell.2022.1060201] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 10/20/2022] [Indexed: 09/10/2023] Open
Abstract
Respiratory disease including interstitial lung diseases (ILDs) and lung cancer is a group of devastating diseases that linked with increased morbidity and healthcare burden. However, respiratory diseases cannot be fully explained by the alternation of genetic information. Genetic studies described that epigenetic mechanisms also participate to transmit genetic information. Recently, many studies demonstrated the role of altered epigenetic modification in the pathogenesis of lung cancer and pulmonary fibrosis. Due to lacking effective medication, the underlying pathophysiological processes and causal relationships of lung diseases with epigenetic mechanisms still need to be better understood. Our present review provided a systematic revision of current knowledge concerning diverse epigenetic aberrations in major lung diseases, with special emphasis on DNA methylation, histone modifications, lncRNAs profiles, telomere patterns, as well as chromatin-remodelling complexes. We believed that a new target therapy for lung disease based on findings of the involved epigenetic pathway is a promising future direction.
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Affiliation(s)
- Xueren Li
- Department of Respiratory Medicine, Tianjin Haihe Hospital, Tianjin, China
- Tianjin Institute of Respiratory Diseases, Tianjin, China
| | - Chunjing Feng
- The Institute Includes H&B(Tianjin) Stem Cell Research Institute, Tianjin, China
| | - Shouchun Peng
- Department of Respiratory Medicine, Tianjin Haihe Hospital, Tianjin, China
- Tianjin Institute of Respiratory Diseases, Tianjin, China
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8
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Zhou Y, Li M, Shen T, Yang T, Shi G, Wei Y, Chen C, Wang D, Wang Y, Zhang T. Celastrol Targets Cullin-Associated and Neddylation-Dissociated 1 to Prevent Fibroblast-Myofibroblast Transformation against Pulmonary Fibrosis. ACS Chem Biol 2022; 17:2734-2743. [PMID: 36076154 DOI: 10.1021/acschembio.2c00099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Celastrol (CEL), a pentacyclic triterpene compound, has been proven to have a definite antipulmonary fibrosis effect. However, its direct targets for antipulmonary fibrosis remain unknown. In this study, we designed and synthesized a series of celastrol-based probes to identify the direct targets in human pulmonary fibroblasts using an activity-based protein profiling strategy. Among many fished targets, we identified a key protein, cullin-associated and neddylation-dissociated 1 (CAND1), which was involved in fibroblast-myofibroblast transformation (FMT). More importantly, we found that the inhibitory effect of celastrol on FMT is dependent on CAND1, through improving the interactions between CAND1 and Cullin1 to promote the activity of Skp1/Cullin1/F-box ubiquitin ligases. In silico studies and cysteine mutation experiments further demonstrated that Cys264 of CAND1 is the site for conjugation of celastrol. This reveals a new mechanism of celastrol against pulmonary fibrosis and may provide a novel therapeutic option for antipulmonary fibrosis.
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Affiliation(s)
- Yu Zhou
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Manru Li
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Tao Shen
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Tianming Yang
- Tianjin Key Laboratory of Molecular Design and Drug Discovery, Tianjin Institute of Pharmaceutical Research, Tianjin 300301, China.,State Key Laboratory of Drug Delivery Technology and Pharmacokinetics, Tianjin Institute of Pharmaceutical Research, Tianjin 300301, China
| | - Gaona Shi
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Yazi Wei
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Chengjuan Chen
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Dongmei Wang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Yanan Wang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Tiantai Zhang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
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9
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Ubiquitin specific peptidase 1 promotes hepatic fibrosis through positive regulation of CXCL1 by deubiquitinating SNAIL. Dig Liver Dis 2022; 54:91-102. [PMID: 33926817 DOI: 10.1016/j.dld.2021.02.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 02/25/2021] [Accepted: 02/26/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND Hepatic fibrosis is attributed to an imbalance of extracellular matrix production and lysis. Human hepatic stellate cells (HSCs) have been uncovered to converge through complex interactions with hepatocytes and immune cells, causing scarring in liver damage. AIMS We aimed to investigate the expression status of ubiquitin specific peptidase 1 (USP1) and its potential mechanisms on HSCs and hepatic fibrosis. METHODS Hepatic fibrosis animal and cell models were generated using mice with carbon tetrachloride (CCl4) treatment and HSCs LX-2 with TGF-β1 treatment. Relationships among USP1, SNAIL, and CXCL1 were identified via dual-luciferase reporter gene assay, co-immunoprecipitation, and chromatin immunoprecipitation. With gain- and loss-of-experiments, CCK-8 and flow cytometry assays were employed for cell proliferation and apoptosis. RESULTS USP1 upregulated SNAIL expression through deubiquitination to increase CXCL1 expression. USP1 downregulation decreased expressions of fibrosis-related genes, suppressed proliferation, and promoted apoptosis in TGF-β1-induced LX-2 cells, which were reversed by SNAIL overexpression. The pro-fibrosis role caused by SNAIL upregulation was abolished by CXCL1 reduction. Promotive function of USP1/SNAIL/CXCL1 axis in hepatic fibrosis was further confirmed in vivo. CONCLUSION These data supported siRNA-mediated silencing of USP1 improved hepatic fibrosis through inhibition of SNAIL and CXCL1, which yields a new therapeutic target for hepatic fibrosis treatment.
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10
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Panyain N, Godinat A, Thawani AR, Lachiondo-Ortega S, Mason K, Elkhalifa S, Smith LM, Harrigan JA, Tate EW. Activity-based protein profiling reveals deubiquitinase and aldehyde dehydrogenase targets of a cyanopyrrolidine probe. RSC Med Chem 2021; 12:1935-1943. [PMID: 34820624 PMCID: PMC8597422 DOI: 10.1039/d1md00218j] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 08/11/2021] [Indexed: 11/21/2022] Open
Abstract
Ubiquitin carboxy-terminal hydrolase L1 (UCHL1), a deubiquitinating enzyme (DUB), is a potential drug target in various cancers, and liver and lung fibrosis. However, bona fide functions and substrates of UCHL1 remain poorly understood. Herein, we report the characterization of UCHL1 covalent inhibitor MT16-001 based on a thiazole cyanopyrrolidine scaffold. In combination with chemical proteomics, a closely related activity-based probe (MT16-205) was used to generate a comprehensive quantitative profile for on- and off-targets at endogenous cellular abundance. Both compounds are selective for UCHL1 over other DUBs in intact cells but also engage a range of other targets with good selectivity over the wider proteome, including aldehyde dehydrogenases, redox-sensitive Parkinson's disease related protein PARK7, and glutamine amidotransferase. Taken together, these results underline the importance of robust profiling of activity-based probes as chemical tools and highlight the cyanopyrrolidine warhead as a versatile platform for liganding diverse classes of protein with reactive cysteine residues which can be used for further inhibitor screening, and as a starting point for inhibitor development.
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Affiliation(s)
- Nattawadee Panyain
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London London W12 0BZ UK
| | - Aurélien Godinat
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London London W12 0BZ UK
| | - Aditya Raymond Thawani
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London London W12 0BZ UK
| | - Sofía Lachiondo-Ortega
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London London W12 0BZ UK
| | - Katie Mason
- Mission Therapeutics Ltd, The Glenn Berge Building, Babraham Research Campus Babraham Cambridge CB22 3FH UK
| | - Sarah Elkhalifa
- Mission Therapeutics Ltd, The Glenn Berge Building, Babraham Research Campus Babraham Cambridge CB22 3FH UK
| | - Lisa M Smith
- Mission Therapeutics Ltd, The Glenn Berge Building, Babraham Research Campus Babraham Cambridge CB22 3FH UK
| | - Jeanine A Harrigan
- Mission Therapeutics Ltd, The Glenn Berge Building, Babraham Research Campus Babraham Cambridge CB22 3FH UK
| | - Edward W Tate
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London London W12 0BZ UK
- The Francis Crick Institute London NW1 1AT UK
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11
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Cao C, Xue C. More Than Just Cleaning: Ubiquitin-Mediated Proteolysis in Fungal Pathogenesis. Front Cell Infect Microbiol 2021; 11:774613. [PMID: 34858882 PMCID: PMC8631298 DOI: 10.3389/fcimb.2021.774613] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Accepted: 10/25/2021] [Indexed: 12/14/2022] Open
Abstract
Ubiquitin-proteasome mediated protein turnover is an important regulatory mechanism of cellular function in eukaryotes. Extensive studies have linked the ubiquitin-proteasome system (UPS) to human diseases, and an array of proteasome inhibitors have been successfully developed for cancer therapy. Although still an emerging field, research on UPS regulation of fungal development and virulence has been rapidly advancing and has generated considerable excitement in its potential as a target for novel drugs. In this review, we summarize UPS composition and regulatory function in pathogenic fungi, especially in stress responses, host adaption, and fungal pathogenesis. Emphasis will be given to UPS regulation of pathogenic factors that are important for fungal pathogenesis. We also discuss future potential therapeutic strategies for fungal infections based on targeting UPS pathways.
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Affiliation(s)
- Chengjun Cao
- Public Health Research Institute, Rutgers University, New Brunswick, NJ, United States
| | - Chaoyang Xue
- Public Health Research Institute, Rutgers University, New Brunswick, NJ, United States
- Department of Microbiology, Biochemistry and Molecular Genetics, Rutgers University, Newark, NJ, United States
- Rutgers Center for Lipid Research, Rutgers University, New Brunswick, NJ, United States
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12
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Phillips AT, Boumil EF, Castro N, Venkatesan A, Gallo E, Adams JJ, Sidhu SS, Bernstein AM. USP10 Promotes Fibronectin Recycling, Secretion, and Organization. Invest Ophthalmol Vis Sci 2021; 62:15. [PMID: 34665194 PMCID: PMC8543399 DOI: 10.1167/iovs.62.13.15] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Purpose Integrins play a central role in myofibroblast pathological adhesion, over-contraction, and TGFβ activation. Previously, we demonstrated that after corneal wounding, αv integrins are protected from intracellular degradation by upregulation of the deubiquitinase USP10, leading to cell-surface integrin accumulation. Because integrins bind to and internalize extracellular matrix (ECM), we tested whether extracellular fibronectin (FN) accumulation can result from an increase in integrin and matrix recycling in primary human corneal fibroblasts (HCFs). Methods Primary HCFs were isolated from cadaver eyes. HCFs were transfected with either USP10 cDNA or control cDNA by nucleofection. Internalized FN was quantified with a FN ELISA. Recycled extracellular integrin and FN were detected with streptavidin-488 by live cell confocal microscopy (Zeiss LSM 780). Endogenous FN extra domain A was detected by immunocytochemistry. Cell size and removal of FN from the cell surface was determined by flow cytometry. Results USP10 overexpression increased α5β1 (1.9-fold; P < 0.001) and αv (1.7-fold; P < 0.05) integrin recycling, with a concomitant increase in biotinylated FN internalization (2.1-fold; P < 0.05) and recycling over 4 days (1.7–2.2-fold; P < 0.05). The dependence of FN recycling on integrins was demonstrated by α5β1 and αv integrin blocking antibodies, which, compared with control IgG, decreased biotinylated FN recycling (62% and 84%, respectively; P < 0.05). Overall, we established that extracellular FN was composed of approximately 1/3 recycled biotinylated FN and 2/3 endogenously secreted FN. Conclusions Our data suggest that reduced integrin degradation with a subsequent increase in integrin/FN recycling after wounding may be a newly identified mechanism for the characteristic accumulation of ECM in corneal scar tissue.
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Affiliation(s)
- Andrew T Phillips
- Department of Ophthalmology and Visual Sciences, SUNY Upstate Medical University, Syracuse, New York, United States
| | - Edward F Boumil
- Department of Ophthalmology and Visual Sciences, SUNY Upstate Medical University, Syracuse, New York, United States
| | - Nileyma Castro
- Department of Ophthalmology and Visual Sciences, SUNY Upstate Medical University, Syracuse, New York, United States.,Syracuse VA Medical Center, New York VA Health Care, Syracuse, New York, United States
| | - Arunkumar Venkatesan
- Department of Ophthalmology and Visual Sciences, SUNY Upstate Medical University, Syracuse, New York, United States
| | - Eugenio Gallo
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Jarrett J Adams
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Sachdev S Sidhu
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Audrey M Bernstein
- Department of Ophthalmology and Visual Sciences, SUNY Upstate Medical University, Syracuse, New York, United States.,Syracuse VA Medical Center, New York VA Health Care, Syracuse, New York, United States
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13
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Gregory AD, Tran KC, Tamaskar AS, Wei J, Zhao J, Zhao Y. USP13 Deficiency Aggravates Cigarette-smoke-induced Alveolar Space Enlargement. Cell Biochem Biophys 2021; 79:485-491. [PMID: 34032995 PMCID: PMC8887808 DOI: 10.1007/s12013-021-01000-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/16/2021] [Indexed: 11/26/2022]
Abstract
Alveolar enlargement is a pathological feature of emphysema. Long-term exposure to cigarette smoke (CS) is a high-risk factor for the development of emphysema. Abnormal protein ubiquitination has been implicated to regulate the development of human disorders, however, the role of protein ubiquitination in emphysema has not been well-studied. In this study, we attempted to investigate if a deubiquitinase, USP13, regulates the development of emphysema. Under a mild CS exposure condition, USP13-deficient mice show significant increases in alveolar chord length, indicating that USP13-deficient mice are susceptible to CS-induced alveolar enlargement. It has been shown that USP13 knockout reduced fibronectin expression in lungs. Here, we found that collagen levels were reduced in USP13 siRNA-transfected lung fibroblast cells. This suggests that a loss of extracellular matrix in connective tissues contributes to alveolar enlargement in USP13-deficient mice in response to CS exposure. Further, we investigated the role of USP13 in the expression of oxidative stress markers TXNIP and HMOX1. An increase in HMOX1 abundance was observed in USP13 knockdown lung fibroblast and epithelial cells. Overexpression of USP13 reduced HMOX1 protein levels in lung fibroblast cells, suggesting that modulation of USP13 levels may affect oxidative stress. Knockdown of USP13 significantly reduced TXNIP levels in lungs or lung fibroblast cells. A protein stability pulse-chase assay showed that TXNIP is instable within USP13 knockdown lung fibroblast cells. Further, the reduction of TXNIP was observed in USP13 inhibitor-treated lung epithelial cells. USP13-deficient mice also show higher levels of IgG in bronchoalveolar lavage fluid. This study provides evidence showing that USP13 deficiency plays a role in alveolar space enlargement.
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Affiliation(s)
- Alyssa D Gregory
- Department of Medicine, The University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Kevin C Tran
- Department of Physiology and Cell Biology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Arya S Tamaskar
- Department of Physiology and Cell Biology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Jianxin Wei
- Department of Medicine, The University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Jing Zhao
- Department of Physiology and Cell Biology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, USA
- Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Yutong Zhao
- Department of Physiology and Cell Biology, The Ohio State University Wexner Medical Center, Columbus, OH, USA.
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, USA.
- Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, USA.
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14
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Ba I, Dieudé P, Crestani B, Juge PA, Boileau C, Kannengiesser C, Borie R. Looking for somatic mutations in fibrosing interstitial lung diseases. Respir Med Res 2021; 79:100823. [PMID: 33971433 DOI: 10.1016/j.resmer.2021.100823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 04/20/2021] [Indexed: 11/25/2022]
Affiliation(s)
- I Ba
- Département de Génétique, Université de Paris, INSERM UMR 1152, AP-HP, Hôpital Bichat, Paris, France
| | - P Dieudé
- Service de Rhumatologie, Université de Paris, INSERM UMR 1152, AP-HP, Hôpital Bichat, Paris, France
| | - B Crestani
- Service de Pneumologie A, Université de Paris, INSERM UMR 1152, AP-HP, Hôpital Bichat, Paris, France
| | - P-A Juge
- Service de Rhumatologie, Université de Paris, INSERM UMR 1152, AP-HP, Hôpital Bichat, Paris, France
| | - C Boileau
- Département de Génétique, Université de Paris, INSERM UMR 1148, AP-HP, Hôpital Bichat, Paris, France
| | - C Kannengiesser
- Département de Génétique, Université de Paris, INSERM UMR 1152, AP-HP, Hôpital Bichat, Paris, France
| | - R Borie
- Service de Pneumologie A, Université de Paris, INSERM UMR 1152, AP-HP, Hôpital Bichat, Paris, France.
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15
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Gupta A, Behl T, Aleya L, Rahman MH, Yadav HN, Pal G, Kaur I, Arora S. Role of UPP pathway in amelioration of diabetes-associated complications. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:19601-19614. [PMID: 33660172 DOI: 10.1007/s11356-021-12781-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 01/29/2021] [Indexed: 06/12/2023]
Abstract
Type 2 diabetes (T2D) is one of the most widely spread metabolic disorder also called as "life style" disease. Due to the alarming number of patients, there is great need to therapies targeting functions which can help in maintaining the homeostasis of glucose levels and improving insulin sensitivity. Detailed analysis was done through various research and review papers which was searched using MEDLINE, BIOSIS, and EMBASE using various keywords. This search retrieved the most appropriate content on these molecules targeting UPP pathway. From this extensive review involving UPP pathway, it was concluded that the role of ubiquitin's is not only limited to neurodegenerative disorders but also plays a critical role in progression of diabetes including obesity, insulin resistance, and various neurogenerative disorders but it also targets proteasomal degradation including mediation of cellular signaling pathways. Thus, drugs targeting UPP not only may show effect against diabetes but also are therapeutically beneficial in the treatment of diabetes-associated complications which may be obtained. Thus, based on the available information and data on UPP functions, it can be concluded that regulation of UPP pathway via downstream regulators mainly E1, E2, and E3 may bring promising results. Drugs targeting these transcriptional factors may emerge as a novel therapy in the treatment of diabetes and diabetes-associated complications.
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Affiliation(s)
- Amit Gupta
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Tapan Behl
- Chitkara College of Pharmacy, Chitkara University, Punjab, India.
| | - Lotfi Aleya
- Chrono-Environment Laboratory, UMR CNRS 6249, Bourgogne Franche-Comté University, Besançon, France
| | - Md Habibur Rahman
- Department of Global Medical Science, Wonju College of Medicine, Yonsei University, Seoul, South Korea
- Department of Pharmacy, Southeast University, Banani, Dhaka, 1213, Bangladesh
| | | | - Giridhari Pal
- Vallabhbhai Patel Chest Institute, University of Delhi, Delhi, India
| | - Ishnoor Kaur
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Sandeep Arora
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
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16
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Valenzi E, Tabib T, Papazoglou A, Sembrat J, Trejo Bittar HE, Rojas M, Lafyatis R. Disparate Interferon Signaling and Shared Aberrant Basaloid Cells in Single-Cell Profiling of Idiopathic Pulmonary Fibrosis and Systemic Sclerosis-Associated Interstitial Lung Disease. Front Immunol 2021; 12:595811. [PMID: 33859634 PMCID: PMC8042271 DOI: 10.3389/fimmu.2021.595811] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 03/11/2021] [Indexed: 12/11/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) and systemic sclerosis-associated interstitial lung disease (SSc-ILD) differ in the predominant demographics and identified genetic risk alleles of effected patients, however both diseases frequently progress to respiratory failure and death. Contrasting advanced SSc-ILD to IPF provides insight to the role dysregulated immunity may play in pulmonary fibrosis. To analyze cell-type specific transcriptome commonalities and differences between IPF and SSc-ILD, we compared single-cell RNA-sequencing (scRNA-seq) of 21 explanted lung tissue specimens from patients with advanced IPF, SSc-ILD, and organ donor controls. Comparison of IPF and SSc-ILD tissue identified divergent patterns of interferon signaling, with interferon-gamma signaling upregulated in the SPP1hi and FABP4hi macrophages, cytotoxic T cells, and natural kill cells of IPF, while type I interferon signaling and production was upregulated in the corresponding SSc-ILD populations. Plasmacytoid dendritic cells were found in diseased lungs only, and exhibited upregulated cellular stress pathways in SSc-ILD compared to IPF. Alveolar type I cells were dramatically decreased in both IPF and SSc-ILD, with a distinct transcriptome signature separating these cells by disease. KRT5-/KRT17+ aberrant basaloid cells exhibiting markers of cellular senescence and epithelial-mesenchymal transition were identified in SSc-ILD for the first time. In summary, our study utilizes the enriched capabilities of scRNA-seq to identify key divergent cell types and pathways between IPF and SSc-ILD, providing new insights into the shared and distinct mechanisms between idiopathic and autoimmune interstitial lung diseases.
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Affiliation(s)
- Eleanor Valenzi
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Tracy Tabib
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, United States
| | - Anna Papazoglou
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, United States
| | - John Sembrat
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | | | - Mauricio Rojas
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Robert Lafyatis
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, United States
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17
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Kundu P, Pant I, Jain R, Rao SG, Kondaiah P. Genome-wide DNA methylation changes in oral submucous fibrosis. Oral Dis 2021; 28:1094-1103. [PMID: 33615634 DOI: 10.1111/odi.13811] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 01/08/2021] [Accepted: 02/15/2021] [Indexed: 12/23/2022]
Abstract
OBJECTIVE Oral submucous fibrosis (OSF) is a debilitating potentially malignant condition of the buccal cavity characterized by extensive extracellular matrix deposition resulting in stiffness and trismus. As OSF is a progressive disease, we hypothesized that there would be extensive epigenetic changes in OSF tissues. MATERIALS AND METHODS Using the Infinium HumanMethylation450 BeadChip Array, we analyzed gross DNA methylation changes in seven OSF tissues compared to five controls. Comparison with transcriptomic data and pathway analyses was conducted to find commonly regulated genes. RESULTS A total of 3,294 differentially methylated regions mapping to 857 genes were identified. Comparison with transcriptome data revealed 38 downregulated-hypermethylated genes and 55 hypomethylated-upregulated genes. Using methylation-specific and qRT-PCR, aberrant hypomethylation and increased expression of FGF13, RPS6KA3, and ACSL4 genes were confirmed. Pathways involved in insulin signaling, ubiquitin-mediated proteolysis, nicotine addiction, and RAS/MAPK pathways were dysregulated, among others. Intriguingly, numerous genes located on the X chromosome were dysregulated in OSF tissues as the transcript for XIST gene was downregulated due to hypermethylation of the XIST promoter. CONCLUSIONS This study highlights global epigenetic dysregulation of tissues of the oral cavity in OSF patients and hints at possible X chromosomal dysregulation, previously not implicated in the pathogenesis of OSF.
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Affiliation(s)
- Paramita Kundu
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, India
| | - Ila Pant
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, India
| | - Ruchi Jain
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, India
| | - Somanahalli Girish Rao
- Department of Oral and Maxillofacial Surgery, D.A Pandu Memorial RV Dental College, Bangalore, India
| | - Paturu Kondaiah
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, India
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18
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Yang X, Yang Y, Guo J, Meng Y, Li M, Yang P, Liu X, Aung LHH, Yu T, Li Y. Targeting the epigenome in in-stent restenosis: from mechanisms to therapy. MOLECULAR THERAPY-NUCLEIC ACIDS 2021; 23:1136-1160. [PMID: 33664994 PMCID: PMC7896131 DOI: 10.1016/j.omtn.2021.01.024] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Coronary artery disease (CAD) is one of the most common causes of death worldwide. The introduction of percutaneous revascularization has revolutionized the therapy of patients with CAD. Despite the advent of drug-eluting stents, restenosis remains the main challenge in treating patients with CAD. In-stent restenosis (ISR) indicates the reduction in lumen diameter after percutaneous coronary intervention, in which the vessel's lumen re-narrowing is attributed to the aberrant proliferation and migration of vascular smooth muscle cells (VSMCs) and dysregulation of endothelial cells (ECs). Increasing evidence has demonstrated that epigenetics is involved in the occurrence and progression of ISR. In this review, we provide the latest and comprehensive analysis of three separate but related epigenetic mechanisms regulating ISR, namely, DNA methylation, histone modification, and non-coding RNAs. Initially, we discuss the mechanism of restenosis. Furthermore, we discuss the biological mechanism underlying the diverse epigenetic modifications modulating gene expression and functions of VSMCs, as well as ECs in ISR. Finally, we discuss potential therapeutic targets of the small molecule inhibitors of cardiovascular epigenetic factors. A more detailed understanding of epigenetic regulation is essential for elucidating this complex biological process, which will assist in developing and improving ISR therapy.
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Affiliation(s)
- Xi Yang
- Department of Cardiology, The Affiliated Hospital of Qingdao University, Road No. 59 Haier, Qingdao 266100, Shandong, People's Republic of China
| | - Yanyan Yang
- Department of Immunology, School of Basic Medicine, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, People's Republic of China
| | - Junjie Guo
- Department of Cardiology, The Affiliated Hospital of Qingdao University, Road No. 59 Haier, Qingdao 266100, Shandong, People's Republic of China
| | - Yuanyuan Meng
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, No. 16 Jiangsu Road, Qingdao 266000, People's Republic of China
| | - Min Li
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, No. 38 Dengzhou Road, Qingdao 266021, People's Republic of China
| | - Panyu Yang
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, No. 16 Jiangsu Road, Qingdao 266000, People's Republic of China
| | - Xin Liu
- Department of Cardiology, The Affiliated Hospital of Qingdao University, Road No. 59 Haier, Qingdao 266100, Shandong, People's Republic of China
| | - Lynn Htet Htet Aung
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, No. 38 Dengzhou Road, Qingdao 266021, People's Republic of China
| | - Tao Yu
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, No. 16 Jiangsu Road, Qingdao 266000, People's Republic of China.,Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, No. 38 Dengzhou Road, Qingdao 266021, People's Republic of China
| | - Yonghong Li
- Department of Cardiology, The Affiliated Hospital of Qingdao University, Road No. 59 Haier, Qingdao 266100, Shandong, People's Republic of China
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19
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Lancaster L, Fieuw A, Meulemans J, Ford P, Nathan SD. Standardization of the 6-min walk test in clinical trials of idiopathic pulmonary fibrosis. Contemp Clin Trials 2020; 100:106227. [PMID: 33246099 DOI: 10.1016/j.cct.2020.106227] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/16/2020] [Accepted: 11/17/2020] [Indexed: 11/27/2022]
Abstract
The 6-min walk test (6MWT) is an important measure of functional capacity in idiopathic pulmonary fibrosis (IPF) and has been an endpoint of several IPF clinical trials. However, current guidance for the 6MWT offers insufficient advice on standardization, particularly oxygen supplementation, for clinical trials. Three physicians experienced with the 6MWT and IPF developed a standardized protocol for the 6MWT based on existing clinical guidelines and published literature. The protocol comprises guidance on test conditions, pre-defined parameters to measure at specified timepoints, and step-by-step instructions on conducting the test. The standardized test will be evaluated in the large-scale phase 3 ISABELA trials (NCT03711162; NCT03733444). The test is conducted indoors, using standardized equipment, along a flat, straight, 30-m unobstructed corridor; tests for each individual are performed by the same administrators at the same time of day; warm-up prior to testing is prohibited; supplemental oxygen tanks are permitted and moved by the patient in the same manner for each test; precise wording is used to instruct and encourage patients. Contraindications and stopping criteria are specified. Key assessments include: 6-min walk distance, distance walked at 1 and 3 min, the Borg CR10 scale, heart rate, blood pressure, and oxygen desaturation levels. A standardized 6MWT for IPF will enable more reliable comparisons between clinical trials and limit variability, optimizing use as an endpoint. Application of the standardized 6MWT in the ISABELA program will allow its correlation with other clinically important endpoints and may lead to novel composite endpoints for use in future trials. Submission category: Study Design, Statistical Design, Study Protocols. Submission classifications: Clinical study methodology; Clinical trial design; Clinical trials; Pulmonary disease; Pulmonary disease clinical trial; Respiratory medicine.
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Affiliation(s)
- Lisa Lancaster
- Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.
| | - Ann Fieuw
- Clinical Research, Galapagos NV, Mechelen, Belgium
| | | | - Paul Ford
- Clinical Development, Galapagos NV, Mechelen, Belgium
| | - Steven D Nathan
- Advanced Lung Disease and Transplant Program, Inova Heart and Vascular Institute, Inova Fairfax Hospital, Falls Church, VA, USA
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20
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Yu F, Li Y, Ye Q, Miao J, Taleb SJ, Zhao Y, Zhao J. Lipopolysaccharide reduces USP13 stability through c-Jun N-terminal kinase activation in Kupffer cells. J Cell Physiol 2020; 236:4360-4368. [PMID: 33169399 DOI: 10.1002/jcp.30153] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 10/12/2020] [Accepted: 10/29/2020] [Indexed: 11/10/2022]
Abstract
Protein ubiquitination regulates protein stability, cellular localization, and enzyme activity. Deubiquitinases catalyze the removal of ubiquitin from target proteins and reverse ubiquitination. USP13, a deubiquitinase, has been shown to regulate a variety of cellular responses including inflammation; however, the molecular regulation of USP13 has not been demonstrated. In this study, we revealed that USP13 is degraded in response to lipopolysaccharide (LPS) in Kupffer cells. USP13 levels are significantly decreased in inflamed organs, including liver tissues from septic mice. LPS reduces USP13 protein stability, not transcription, in Kupffer cells. Furthermore, LPS increases USP13 polyubiquitination. Inhibition of proteasome, but not lysosome or immunoproteasome, attenuates LPS-induced USP13 degradation, suggesting USP13 degradation is mediated by the ubiquitin-proteasome system. A catalytically inactive form of USP13 exhibits similar degree of degradation compared with USP13 wild-type, suggesting that USP13 degradation is not dependent on its activity. Furthermore, USP13 degradation is dependent on new protein synthesis. Inhibition of c-Jun N-terminal kinase (JNK) attenuates USP13 degradation, indicating that JNK-dependent new protein synthesis is necessary for USP13 degradation. This study reveals a molecular mechanism of regulation of USP13 degradation in Kupffer cells in response to bacterial endotoxin.
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Affiliation(s)
- Fan Yu
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, Ohio, USA
| | - Yanhui Li
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, Ohio, USA
| | - Qinmao Ye
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, Ohio, USA
| | - Jiaxing Miao
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, Ohio, USA
| | - Sarah J Taleb
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, Ohio, USA
| | - Yutong Zhao
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, Ohio, USA
| | - Jing Zhao
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, Ohio, USA
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21
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Roztocil E, Hammond CL, Gonzalez MO, Feldon SE, Woeller CF. The aryl hydrocarbon receptor pathway controls matrix metalloproteinase-1 and collagen levels in human orbital fibroblasts. Sci Rep 2020; 10:8477. [PMID: 32439897 PMCID: PMC7242326 DOI: 10.1038/s41598-020-65414-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 05/04/2020] [Indexed: 12/13/2022] Open
Abstract
Thyroid eye disease (TED) affects 25–50% of patients with Graves’ Disease. In TED, collagen accumulation leads to an expansion of the extracellular matrix (ECM) which causes destructive tissue remodeling. The purpose of this study was to investigate the therapeutic potential of activating the aryl hydrocarbon receptor (AHR) to limit ECM accumulation in vitro. The ability of AHR to control expression of matrix metalloproteinase-1 (MMP1) was analyzed. MMP1 degrades collagen to prevent excessive ECM. Human orbital fibroblasts (OFs) were treated with the pro-scarring cytokine, transforming growth factor beta (TGFβ) to induce collagen production. The AHR ligand, 6-formylindolo[3,2b]carbazole (FICZ) was used to activate the AHR pathway in OFs. MMP1 protein and mRNA levels were analyzed by immunosorbent assay, Western blotting and quantitative PCR. MMP1 activity was detected using collagen zymography. AHR and its transcriptional binding partner, ARNT were depleted using siRNA to determine their role in activating expression of MMP1. FICZ induced MMP1 mRNA, protein expression and activity. MMP1 expression led to a reduction in collagen 1A1 levels. Furthermore, FICZ-induced MMP1 expression required both AHR and ARNT, demonstrating that the AHR-ARNT transcriptional complex is necessary for expression of MMP1 in OFs. These data show that activation of the AHR by FICZ increases MMP1 expression while leading to a decrease in collagen levels. Taken together, these studies suggest that AHR activation could be a promising target to block excessive collagen accumulation and destructive tissue remodeling that occurs in fibrotic diseases such as TED.
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Affiliation(s)
- Elisa Roztocil
- Flaum Eye Institute, University of Rochester, Rochester, New York, 14642, USA
| | - Christine L Hammond
- Flaum Eye Institute, University of Rochester, Rochester, New York, 14642, USA
| | - Mithra O Gonzalez
- Flaum Eye Institute, University of Rochester, Rochester, New York, 14642, USA
| | - Steven E Feldon
- Flaum Eye Institute, University of Rochester, Rochester, New York, 14642, USA
| | - Collynn F Woeller
- Flaum Eye Institute, University of Rochester, Rochester, New York, 14642, USA. .,Department of Environmental Medicine School of Medicine and Dentistry, University of Rochester, Rochester, New York, 14642, USA.
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22
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Lear TB, Lockwood KC, Larsen M, Tuncer F, Kennerdell JR, Morse C, Valenzi E, Tabib T, Jurczak MJ, Kass DJ, Evankovich JW, Finkel T, Lafyatis R, Liu Y, Chen BB. Kelch-like protein 42 is a profibrotic ubiquitin E3 ligase involved in systemic sclerosis. J Biol Chem 2020; 295:4171-4180. [PMID: 32071084 PMCID: PMC7105301 DOI: 10.1074/jbc.ac119.012066] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/07/2020] [Indexed: 01/08/2023] Open
Abstract
Systemic scleroderma (SSc) is an autoimmune disease that affects over 2.5 million people globally. SSc results in dysfunctional connective tissues with excessive profibrotic signaling, affecting skin, cardiovascular, and particularly lung tissue. Over three-quarters of individuals with SSc develop pulmonary fibrosis within 5 years, the main cause of SSc mortality. No approved medicines to manage lung SSc currently exist. Recent research suggests that profibrotic signaling by transforming growth factor β (TGF-β) is directly tied to SSc. Previous studies have also shown that ubiquitin E3 ligases potently control TGF-β signaling through targeted degradation of key regulatory proteins; however, the roles of these ligases in SSc-TGF-β signaling remain unclear. Here we utilized primary SSc patient lung cells for high-throughput screening of TGF-β signaling via high-content imaging of nuclear translocation of the profibrotic transcription factor SMAD family member 2/3 (SMAD2/3). We screened an RNAi library targeting ubiquitin E3 ligases and observed that knockdown of the E3 ligase Kelch-like protein 42 (KLHL42) impairs TGF-β-dependent profibrotic signaling. KLHL42 knockdown reduced fibrotic tissue production and decreased TGF-β-mediated SMAD activation. Using unbiased ubiquitin proteomics, we identified phosphatase 2 regulatory subunit B'ϵ (PPP2R5ϵ) as a KLHL42 substrate. Mechanistic experiments validated ubiquitin-mediated control of PPP2R5ϵ stability through KLHL42. PPP2R5ϵ knockdown exacerbated TGF-β-mediated profibrotic signaling, indicating a role of PPP2R5ϵ in SSc. Our findings indicate that the KLHL42-PPP2R5ϵ axis controls profibrotic signaling in SSc lung fibroblasts. We propose that future studies could investigate whether chemical inhibition of KLHL42 may ameliorate profibrotic signaling in SSc.
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Affiliation(s)
- Travis B Lear
- Department of Environmental and Occupational Health, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15261; Aging Institute, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213
| | - Karina C Lockwood
- Aging Institute, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213
| | - Mads Larsen
- Aging Institute, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213
| | - Ferhan Tuncer
- Aging Institute, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213
| | - Jason R Kennerdell
- Aging Institute, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213
| | - Christina Morse
- Division of Rheumatology and Clinical Immunology, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213
| | - Eleanor Valenzi
- Division of Rheumatology and Clinical Immunology, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213
| | - Tracy Tabib
- Division of Rheumatology and Clinical Immunology, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213
| | - Michael J Jurczak
- Division of Endocrinology and Metabolism, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213
| | - Daniel J Kass
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213
| | - John W Evankovich
- Aging Institute, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213; Acute Lung Injury Center of Excellence, Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213
| | - Toren Finkel
- Aging Institute, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213; Division of Cardiology, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213
| | - Robert Lafyatis
- Division of Rheumatology and Clinical Immunology, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213
| | - Yuan Liu
- Aging Institute, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213; Acute Lung Injury Center of Excellence, Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213.
| | - Bill B Chen
- Aging Institute, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213; Acute Lung Injury Center of Excellence, Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213; Vascular Medicine Institute, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213.
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23
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El Ayadi A, Jay JW, Prasai A. Current Approaches Targeting the Wound Healing Phases to Attenuate Fibrosis and Scarring. Int J Mol Sci 2020; 21:ijms21031105. [PMID: 32046094 PMCID: PMC7037118 DOI: 10.3390/ijms21031105] [Citation(s) in RCA: 97] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 01/20/2020] [Accepted: 02/04/2020] [Indexed: 02/06/2023] Open
Abstract
Cutaneous fibrosis results from suboptimal wound healing following significant tissue injury such as severe burns, trauma, and major surgeries. Pathologic skin fibrosis results in scars that are disfiguring, limit normal movement, and prevent patient recovery and reintegration into society. While various therapeutic strategies have been used to accelerate wound healing and decrease the incidence of scarring, recent studies have targeted the molecular regulators of each phase of wound healing, including the inflammatory, proliferative, and remodeling phases. Here, we reviewed the most recent literature elucidating molecular pathways that can be targeted to reduce fibrosis with a particular focus on post-burn scarring. Current research targeting inflammatory mediators, the epithelial to mesenchymal transition, and regulators of myofibroblast differentiation shows promising results. However, a multimodal approach addressing all three phases of wound healing may provide the best therapeutic outcome.
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24
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Majolée J, Kovačević I, Hordijk PL. Ubiquitin-based modifications in endothelial cell-cell contact and inflammation. J Cell Sci 2019; 132:132/17/jcs227728. [PMID: 31488505 DOI: 10.1242/jcs.227728] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Endothelial cell-cell contacts are essential for vascular integrity and physiology, protecting tissues and organs from edema and uncontrolled invasion of inflammatory cells. The vascular endothelial barrier is dynamic, but its integrity is preserved through a tight control at different levels. Inflammatory cytokines and G-protein-coupled receptor agonists, such as histamine, reduce endothelial integrity and increase vascular leakage. This is due to elevated myosin-based contractility, in conjunction with phosphorylation of proteins at cell-cell contacts. Conversely, reducing contractility stabilizes or even increases endothelial junctional integrity. Rho GTPases are key regulators of such cytoskeletal dynamics and endothelial cell-cell contacts. In addition to signaling-induced regulation, the expression of junctional proteins, such as occludin, claudins and vascular endothelial cadherin, also controls endothelial barrier function. There is increasing evidence that, in addition to protein phosphorylation, ubiquitylation (also known as ubiquitination) is an important and dynamic post-translational modification that regulates Rho GTPases, junctional proteins and, consequently, endothelial barrier function. In this Review, we discuss the emerging role of ubiquitylation and deubiquitylation events in endothelial integrity and inflammation. The picture that emerges is one of increasing complexity, which is both fascinating and promising given the clinical relevance of vascular integrity in the control of inflammation, and of tissue and organ damage.
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Affiliation(s)
- Jisca Majolée
- Department of Physiology, Amsterdam University Medical Centers, location VUmc, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Igor Kovačević
- Department of Physiology, Amsterdam University Medical Centers, location VUmc, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Peter L Hordijk
- Department of Physiology, Amsterdam University Medical Centers, location VUmc, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
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25
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Maher TM, Kreuter M, Lederer DJ, Brown KK, Wuyts W, Verbruggen N, Stutvoet S, Fieuw A, Ford P, Abi-Saab W, Wijsenbeek M. Rationale, design and objectives of two phase III, randomised, placebo-controlled studies of GLPG1690, a novel autotaxin inhibitor, in idiopathic pulmonary fibrosis (ISABELA 1 and 2). BMJ Open Respir Res 2019; 6:e000422. [PMID: 31179008 PMCID: PMC6530501 DOI: 10.1136/bmjresp-2019-000422] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 04/23/2019] [Accepted: 05/02/2019] [Indexed: 12/19/2022] Open
Abstract
Introduction While current standard of care (SOC) for idiopathic pulmonary fibrosis (IPF) slows disease progression, prognosis remains poor. Therefore, an unmet need exists for novel, well-tolerated agents that reduce lung function decline and improve quality of life. Here we report the design of two phase III studies of the novel IPF therapy, GLPG1690. Methods and analysis Two identically designed, phase III, international, randomised, double-blind, placebo-controlled, parallel-group, multicentre studies (ISABELA 1 and 2) were initiated in November 2018. It is planned that, in each study, 750 subjects with IPF will be randomised 1:1:1 to receive oral GLPG1690 600 mg, GLPG1690 200 mg or placebo, once daily, on top of local SOC, for at least 52 weeks. The primary endpoint is rate of decline of forced vital capacity (FVC) over 52 weeks. Key secondary endpoints are week 52 composite endpoint of disease progression or all-cause mortality (defined as composite endpoint of first occurrence of ≥10% absolute decline in per cent predicted FVC or all-cause mortality at week 52); time to first respiratory-related hospitalisation until end of study; and week 52 change from baseline in the St George's Respiratory Questionnaire total score (a quality-of-life measure). Ethics and dissemination Studies will be conducted in accordance with Good Clinical Practice guidelines, Declaration of Helsinki principles, and local ethical and legal requirements. Results will be reported in a peer-reviewed publication. Trial registration numbers NCT03711162; NCT03733444.
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Affiliation(s)
- Toby M Maher
- NIHR Respiratory Clinical Research Facility, Royal Brompton Hospital, and Fibrosis Research Group, National Heart and Lung Institute, Imperial College, London, UK
| | - Michael Kreuter
- Centre for Interstitial and Rare Lung Diseases, Thoraxklinik, University Hospital Heidelberg, and German Center for Lung Research, Heidelberg, Germany
| | - David J Lederer
- Department of Medicine, Columbia University Irving Medical Center, New York City, New York, USA
| | - Kevin K Brown
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
| | - Wim Wuyts
- Unit for Interstitial Lung Diseases, Department of Pulmonary Medicine, University Hospitals Leuven, Leuven, Belgium
| | | | | | | | | | | | - Marlies Wijsenbeek
- Department of Respiratory Medicine, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands
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