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Safdar R, Mishra A, Shah GM, Ashraf MZ. Poly (ADP-ribose) Polymerase-1 modulations in the genesis of thrombosis. J Thromb Thrombolysis 2024; 57:743-753. [PMID: 38787496 DOI: 10.1007/s11239-024-02974-3] [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] [Accepted: 03/28/2024] [Indexed: 05/25/2024]
Abstract
Thrombosis, a coagulation disorder, occurs due to altered levels of coagulation, fibrinolytic and immune factors, which are otherwise known to maintain hemostasis in normal physiological conditions. Here, we review the direct and indirect participation of a multifunctional nuclear enzyme poly (ADP-ribose) polymerase-1 (PARP1) in the expression of key genes and cellular processes involved in thrombotic pathogenesis. PARP1 biological activities range from maintenance of genomic integrity, chromatin remodeling, base excision DNA repair, stress responses to cell death, angiogenesis and cell cycle pathways. However, under homeostatic imbalances, PARP1 activities are linked with the pathogenesis of diseases, including cancer, aging, neurological disorders, and cardiovascular diseases. Disease-associated distressed cells employ a variety of PARP-1 functions such as oxidative damage exacerbations, cellular energetics and apoptosis pathways, regulation of inflammatory mediators, promotion of endothelial dysfunction, and ERK-mediated signaling in pathogenesis. Thrombosis is one such pathogenesis that comprises exacerbation of coagulation cascade due to biochemical alterations in endothelial cells, platelet activation, overexpression of adhesion molecules, cytokines release, and leukocyte adherence. Thus, the activation of endothelial and inflammatory cells in thrombosis implicates a potential role of PARP1 activation in thrombogenesis. This review article explores the direct impact of PARP1 activation in the etiology of thrombosis and discusses PARP1-mediated endothelial dysfunction, inflammation, and epigenetic regulations in the disease manifestation. Understanding PARP1 functions associated with thrombosis may elucidate novel pathogenetic mechanisms and help in better disease management through newer therapeutic interventions targeting PARP1 activity.
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Affiliation(s)
- Raishal Safdar
- Department of Biotechnology, Jamia Millia Islamia, New Delhi, India
| | - Aastha Mishra
- CSIR-Institute of Genomics & Integrative Biology, Delhi, India
| | - Girish M Shah
- Neuroscience Division, CHU de Québec Université Laval Research Center, Québec City, QC, G1V 4G2, Canada
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Lin LQ, Zeng HK, Luo YL, Chen DF, Ma XQ, Chen HJ, Song XY, Wu HK, Li SY. Mechanical stretch promotes apoptosis and impedes ciliogenesis of primary human airway basal stem cells. Respir Res 2023; 24:237. [PMID: 37773064 PMCID: PMC10540374 DOI: 10.1186/s12931-023-02528-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 08/31/2023] [Indexed: 09/30/2023] Open
Abstract
BACKGROUND Airway basal stem cells (ABSCs) have self-renewal and differentiation abilities. Although an abnormal mechanical environment related to chronic airway disease (CAD) can cause ABSC dysfunction, it remains unclear how mechanical stretch regulates the behavior and structure of ABSCs. Here, we explored the effect of mechanical stretch on primary human ABSCs. METHODS Primary human ABSCs were isolated from healthy volunteers. A Flexcell FX-5000 Tension system was used to mimic the pathological airway mechanical stretch conditions of patients with CAD. ABSCs were stretched for 12, 24, or 48 h with 20% elongation. We first performed bulk RNA sequencing to identify the most predominantly changed genes and pathways. Next, apoptosis of stretched ABSCs was detected with Annexin V-FITC/PI staining and a caspase 3 activity assay. Proliferation of stretched ABSCs was assessed by measuring MKI67 mRNA expression and cell cycle dynamics. Immunofluorescence and hematoxylin-eosin staining were used to demonstrate the differentiation state of ABSCs at the air-liquid interface. RESULTS Compared with unstretched control cells, apoptosis and caspase 3 activation of ABSCs stretched for 48 h were significantly increased (p < 0.0001; p < 0.0001, respectively), and MKI67 mRNA levels were decreased (p < 0.0001). In addition, a significant increase in the G0/G1 population (20.2%, p < 0.001) and a significant decrease in S-phase cells (21.1%, p < 0.0001) were observed. The ratio of Krt5+ ABSCs was significantly higher (32.38% vs. 48.71%, p = 0.0037) following stretching, while the ratio of Ac-tub+ cells was significantly lower (37.64% vs. 21.29%, p < 0.001). Moreover, compared with the control, the expression of NKX2-1 was upregulated significantly after stretching (14.06% vs. 39.51%, p < 0.0001). RNA sequencing showed 285 differentially expressed genes, among which 140 were upregulated and 145 were downregulated, revealing that DDIAS, BIRC5, TGFBI, and NKX2-1 may be involved in the function of primary human ABSCs during mechanical stretch. There was no apparent difference between stretching ABSCs for 24 and 48 h compared with the control. CONCLUSIONS Pathological stretching induces apoptosis of ABSCs, inhibits their proliferation, and disrupts cilia cell differentiation. These features may be related to abnormal regeneration and repair observed after airway epithelium injury in patients with CAD.
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Affiliation(s)
- Li-Qin Lin
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, Guangdong, China
- National Clinical Research Center for Respiratory Disease, Guangzhou, 510120, Guangdong, China
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, Guangdong, China
- State Key Laboratory of Respiratory Disease, Guangzhou, 511495, Guangdong, China
| | - Hai-Kang Zeng
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, Guangdong, China
- National Clinical Research Center for Respiratory Disease, Guangzhou, 510120, Guangdong, China
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, Guangdong, China
- State Key Laboratory of Respiratory Disease, Guangzhou, 511495, Guangdong, China
| | - Yu-Long Luo
- The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510799, Guangdong, China
- Key Laboratory of Biological Targeting Diagnosis, Guangzhou, 510799, Guangdong, China
- Therapy and Rehabilitation of Guangdong Higher Education Institutes, Guangzhou, 510799, Guangdong, China
- Innovation Centre for Advanced Interdisciplinary Medicine, Guangzhou, 510799, Guangdong, China
| | - Di-Fei Chen
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, Guangdong, China
- National Clinical Research Center for Respiratory Disease, Guangzhou, 510120, Guangdong, China
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, Guangdong, China
- State Key Laboratory of Respiratory Disease, Guangzhou, 511495, Guangdong, China
| | - Xiao-Qian Ma
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, Guangdong, China
- National Clinical Research Center for Respiratory Disease, Guangzhou, 510120, Guangdong, China
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, Guangdong, China
- State Key Laboratory of Respiratory Disease, Guangzhou, 511495, Guangdong, China
| | - Huan-Jie Chen
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, Guangdong, China
- National Clinical Research Center for Respiratory Disease, Guangzhou, 510120, Guangdong, China
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, Guangdong, China
- State Key Laboratory of Respiratory Disease, Guangzhou, 511495, Guangdong, China
| | - Xin-Yu Song
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, Guangdong, China
- National Clinical Research Center for Respiratory Disease, Guangzhou, 510120, Guangdong, China
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, Guangdong, China
- State Key Laboratory of Respiratory Disease, Guangzhou, 511495, Guangdong, China
| | - Hong-Kai Wu
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, Guangdong, China
- National Clinical Research Center for Respiratory Disease, Guangzhou, 510120, Guangdong, China
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, Guangdong, China
- State Key Laboratory of Respiratory Disease, Guangzhou, 511495, Guangdong, China
| | - Shi-Yue Li
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, Guangdong, China.
- National Clinical Research Center for Respiratory Disease, Guangzhou, 510120, Guangdong, China.
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, Guangdong, China.
- State Key Laboratory of Respiratory Disease, Guangzhou, 511495, Guangdong, China.
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Tian G, Ren T. Mechanical stress regulates the mechanotransduction and metabolism of cardiac fibroblasts in fibrotic cardiac diseases. Eur J Cell Biol 2023; 102:151288. [PMID: 36696810 DOI: 10.1016/j.ejcb.2023.151288] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 01/17/2023] [Accepted: 01/18/2023] [Indexed: 01/20/2023] Open
Abstract
Fibrotic cardiac diseases are characterized by myocardial fibrosis that results in maladaptive cardiac remodeling. Cardiac fibroblasts (CFs) are the main cell type responsible for fibrosis. In response to stress or injury, intrinsic CFs develop into myofibroblasts and produce excess extracellular matrix (ECM) proteins. Myofibroblasts are mechanosensitive cells that can detect changes in tissue stiffness and respond accordingly. Previous studies have revealed that some mechanical stimuli control fibroblast behaviors, including ECM formation, cell migration, and other phenotypic traits. Further, metabolic alteration is reported to regulate fibrotic signaling cascades, such as the transforming growth factor-β pathway and ECM deposition. However, the relationship between metabolic changes and mechanical stress during fibroblast-to-myofibroblast transition remains unclear. This review aims to elaborate on the crosstalk between mechanical stress and metabolic changes during the pathological transition of cardiac fibroblasts.
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Affiliation(s)
- Geer Tian
- Department of Cardiology of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, PR China; Cardiovascular Key Laboratory of Zhejiang Province, Hangzhou, PR China; Binjiang Institute of Zhejiang University, 66 Dongxin Road, Hangzhou 310053, PR China
| | - Tanchen Ren
- Department of Cardiology of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, PR China; Cardiovascular Key Laboratory of Zhejiang Province, Hangzhou, PR China.
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Huang G, He Y, Hong L, Zhou M, Zuo X, Zhao Z. Restoration of NAD + homeostasis protects C2C12 myoblasts and mouse levator ani muscle from mechanical stress-induced damage. Anim Cells Syst (Seoul) 2022; 26:192-202. [PMID: 36046029 PMCID: PMC9423866 DOI: 10.1080/19768354.2022.2106303] [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] [Indexed: 11/29/2022] Open
Abstract
Excessive mechanical traction damages the levator ani muscle (LAM), increasing the incidence of pelvic floor dysfunction (PFD). In this study, we explored the effects of oxidized nicotinamide adenine dinucleotide (NAD+) on the damage to both muscle cells and LAM tissue induced by mechanical stress (MS) at the cellular and animal levels. The cell damage model was established using a four-point bending system. The LAM damage model was established using vaginal distention and traction. Exogenous addition of PJ34, an inhibitor of poly (ADP-ribose) polymerase-1 (PARP-1), and the nicotinamide mononucleotide (NMN) precursor of NAD+ increased NAD+ levels. ATP content and mitochondrial membrane potential were measured to assess mitochondrial function. NAD+ levels, cell viability, and PARP-1 activity were detected using commercial kits. DNA damage in cells was detected with immunofluorescence staining, and LAM damage was detected with tissue TUNEL staining. PARP-1 activity and DNA damage of LAM were detected by immunohistochemistry. A small amount of DNA damage and PARP-1 activation did not affect NAD+ levels, while excessive DNA damage and PARP-1 activation led to an imbalance of NAD+ homeostasis. Furthermore, increasing NAD+ levels in vivo and in vitro could rescue mitochondrial dysfunction and damage to both muscle cells and LAM tissue induced by MS. In conclusion, MS can induce damage to both C2C12 cells and LAM tissue. Restoring NAD+ homeostasis can rescue this damage by improving mitochondrial function.
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Affiliation(s)
- Guotao Huang
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, People’s Republic of China
| | - Yong He
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, People’s Republic of China
| | - Li Hong
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, People’s Republic of China
| | - Min Zhou
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, People’s Republic of China
| | - Xiaohu Zuo
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, People’s Republic of China
| | - Zhihan Zhao
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, People’s Republic of China
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Thiel CS, Tauber S, Christoffel S, Huge A, Lauber BA, Polzer J, Paulsen K, Lier H, Engelmann F, Schmitz B, Schütte A, Raig C, Layer LE, Ullrich O. Rapid coupling between gravitational forces and the transcriptome in human myelomonocytic U937 cells. Sci Rep 2018; 8:13267. [PMID: 30185876 PMCID: PMC6125427 DOI: 10.1038/s41598-018-31596-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 08/22/2018] [Indexed: 01/06/2023] Open
Abstract
The gravitational force has been constant throughout Earth's evolutionary history. Since the cell nucleus is subjected to permanent forces induced by Earth's gravity, we addressed the question, if gene expression homeostasis is constantly shaped by the gravitational force on Earth. We therefore investigated the transcriptome in force-free conditions of microgravity, determined the time frame of initial gravitational force-transduction to the transcriptome and assessed the role of cation channels. We combined a parabolic flight experiment campaign with a suborbital ballistic rocket experiment employing the human myelomonocytic cell line U937 and analyzed the whole gene transcription by microarray, using rigorous controls for exclusion of effects not related to gravitational force and cross-validation through two fully independent research campaigns. Experiments with the wide range ion channel inhibitor SKF-96365 in combination with whole transcriptome analysis were conducted to study the functional role of ion channels in the transduction of gravitational forces at an integrative level. We detected profound alterations in the transcriptome already after 20 s of microgravity or hypergravity. In microgravity, 99.43% of all initially altered transcripts adapted after 5 min. In hypergravity, 98.93% of all initially altered transcripts adapted after 75 s. Only 2.4% of all microgravity-regulated transcripts were sensitive to the cation channel inhibitor SKF-96365. Inter-platform comparison of differentially regulated transcripts revealed 57 annotated gravity-sensitive transcripts. We assume that gravitational forces are rapidly and constantly transduced into the nucleus as omnipresent condition for nuclear and chromatin structure as well as homeostasis of gene expression.
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Affiliation(s)
- Cora S Thiel
- Institute of Anatomy, Faculty of Medicine, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland.
- Department of Machine Design, Engineering Design and Product Development, Institute of Mechanical Engineering, Otto-von-Guericke-University Magdeburg, Universitätsplatz 2, 39106, Magdeburg, Germany.
| | - Svantje Tauber
- Institute of Anatomy, Faculty of Medicine, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
- Department of Machine Design, Engineering Design and Product Development, Institute of Mechanical Engineering, Otto-von-Guericke-University Magdeburg, Universitätsplatz 2, 39106, Magdeburg, Germany
| | - Swantje Christoffel
- Institute of Anatomy, Faculty of Medicine, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
- Department of Machine Design, Engineering Design and Product Development, Institute of Mechanical Engineering, Otto-von-Guericke-University Magdeburg, Universitätsplatz 2, 39106, Magdeburg, Germany
| | - Andreas Huge
- Core Facility Genomic, Medical Faculty of Muenster, University of Muenster, Albert-Schweitzer-Campus 1, D3, Domagstrasse 3, 48149, Muenster, Germany
| | - Beatrice A Lauber
- Institute of Anatomy, Faculty of Medicine, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Jennifer Polzer
- Institute of Anatomy, Faculty of Medicine, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Katrin Paulsen
- Institute of Anatomy, Faculty of Medicine, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Hartwin Lier
- KEK GmbH, Kemberger Str. 5, 06905, Bad Schmiedeberg, Germany
| | - Frank Engelmann
- KEK GmbH, Kemberger Str. 5, 06905, Bad Schmiedeberg, Germany
- Ernst-Abbe-Hochschule Jena, Carl-Zeiss-Promenade 2, 07745, Jena, Germany
| | | | | | - Christiane Raig
- Institute of Anatomy, Faculty of Medicine, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Liliana E Layer
- Institute of Anatomy, Faculty of Medicine, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Oliver Ullrich
- Institute of Anatomy, Faculty of Medicine, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland.
- Department of Machine Design, Engineering Design and Product Development, Institute of Mechanical Engineering, Otto-von-Guericke-University Magdeburg, Universitätsplatz 2, 39106, Magdeburg, Germany.
- Zurich Center for Integrative Human Physiology (ZIHP), University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland.
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6
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Wielgos ME, Zhang Z, Rajbhandari R, Cooper TS, Zeng L, Forero A, Esteva FJ, Osborne CK, Schiff R, LoBuglio AF, Nozell SE, Yang ES. Trastuzumab-Resistant HER2 + Breast Cancer Cells Retain Sensitivity to Poly (ADP-Ribose) Polymerase (PARP) Inhibition. Mol Cancer Ther 2018; 17:921-930. [PMID: 29592880 DOI: 10.1158/1535-7163.mct-17-0302] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 08/29/2017] [Accepted: 02/23/2018] [Indexed: 01/24/2023]
Abstract
HER2-targeted therapies, such as trastuzumab, have increased the survival rates of HER2+ breast cancer patients. However, despite these therapies, many tumors eventually develop resistance to these therapies. Our lab previously reported an unexpected sensitivity of HER2+ breast cancer cells to poly (ADP-ribose) polymerase inhibitors (PARPi), agents that target homologous recombination (HR)-deficient tumors, independent of a DNA repair deficiency. In this study, we investigated whether HER2+ trastuzumab-resistant (TR) breast cancer cells were susceptible to PARPi and the mechanism behind PARPi induced cytotoxicity. We demonstrate that the PARPi ABT-888 (veliparib) decreased cell survival in vitro and tumor growth in vivo of HER2+ TR breast cancer cells. PARP-1 siRNA confirmed that cytotoxicity was due, in part, to PARP-1 inhibition. Furthermore, PARP-1 silencing had variable effects on the expression of several NF-κB-regulated genes. In particular, silencing PARP-1 inhibited NF-κB activity and reduced p65 binding at the IL8 promoter, which resulted in a decrease in IL8 mRNA and protein expression. Our results provide insight in the potential mechanism by which PARPi induces cytotoxicity in HER2+ breast cancer cells and support the testing of PARPi in patients with HER2+ breast cancer resistant to trastuzumab. Mol Cancer Ther; 17(5); 921-30. ©2018 AACR.
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Affiliation(s)
- Monica E Wielgos
- Department of Radiation Oncology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Zhuo Zhang
- Department of Radiation Oncology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Rajani Rajbhandari
- Department of Radiation Oncology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Tiffiny S Cooper
- Department of Radiation Oncology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Ling Zeng
- Department of Radiation Oncology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Andres Forero
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Francisco J Esteva
- Breast Medical Oncology Program, NYU Cancer Institute, New York, New York
| | - C Kent Osborne
- Lester and Sue Smith Breast Cancer, Baylor College of Medicine, Houston, Texas
- Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, Texas
- Department of Medicine, Baylor College of Medicine, Houston, Texas
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas
| | - Rachel Schiff
- Lester and Sue Smith Breast Cancer, Baylor College of Medicine, Houston, Texas
- Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, Texas
- Department of Medicine, Baylor College of Medicine, Houston, Texas
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas
| | - Albert F LoBuglio
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Susan E Nozell
- Department of Radiation Oncology, University of Alabama at Birmingham, Birmingham, Alabama
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Eddy S Yang
- Department of Radiation Oncology, University of Alabama at Birmingham, Birmingham, Alabama.
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, Alabama
- Department of Pharmacology and Toxicology, University of Alabama at Birmingham, Birmingham, Alabama
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7
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Sun X, Chen L, Yan W. TIPE2 Inhibits the Expression of Asthma-Related Inflammatory Factors in Hyperstretched Bronchial Epithelial Cells Through the Wnt/β-Catenin Pathway. Inflammation 2018; 40:770-777. [PMID: 28188409 DOI: 10.1007/s10753-017-0521-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Childhood asthma, an airway inflammatory disease, is a serious threat to the child's quality of life. Recently, TIPE2 expression was reported to be decreased in children with asthma. Therefore, additional studies focusing on TIPE2 might provide an approach for treating childhood asthma. In this study, we found that TIPE2 was poorly expressed in hyperstretched human bronchial epithelial cells (BEAS-2B). TIPE2 overexpression also significantly suppressed the stretch-induced secretion of asthma-related inflammatory factors (TNF-α, TSLP, MMP-9, and VEGF). In contrast, TIPE2 inhibition significantly promoted the secretion of TNF-α, TSLP, MMP-9, and VEGF. Furthermore, overexpression of TIPE2 remarkably inhibited the activation of Wnt/β-catenin in hyperstretched BEAS-2B cells, while siTIPE2 activated Wnt/β-catenin in hyperstretched BEAS-2B cells. Further analysis showed that the Wnt/β-catenin signal inhibitor Dkk-1 could further enhance the TIPE2-induced suppression of Wnt/β-catenin signaling, which also suppressed the siTIPE2-induced secretion of TNF-α, TSLP, MMP-9, and VEGF in hyperstretched BEAS-2B cells. Dkk-1 reversed the effects of siRNA-TIPE2 on Wnt/β-catenin signaling and inflammatory cytokines. In summary, we have exhibited that TIPE2 inhibited the expression of asthma-related inflammatory factors in hyperstretched BEAS-2B cells by suppressing the Wnt/β-catenin signaling pathway. TIPE2 may be involved in airway inflammation during asthma attack, and it may be used as a potential therapeutic target for bronchial epithelial inflammation in childhood asthma.
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Affiliation(s)
- Xinrong Sun
- First Department of Respiratory Medicine, Xi'an Children's Hospital, Xi'an, China, 710003
| | - Lu Chen
- First Neonatal Department, Xi'an Children's Hospital, Xi'an, China, 710003
| | - Wen Yan
- First Neonatal Department, Xi'an Children's Hospital, Xi'an, China, 710003.
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8
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Serum–glucocorticoid-regulated kinase 1 contributes to mechanical stretch-induced inflammatory responses in cardiac fibroblasts. Mol Cell Biochem 2017; 445:67-78. [DOI: 10.1007/s11010-017-3252-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 12/10/2017] [Indexed: 01/29/2023]
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9
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Sun Y, Zhou L, Lv D, Liu H, He T, Wang X. Poly(ADP-ribose) polymerase 1 inhibition prevents interleukin-1β-induced inflammation in human osteoarthritic chondrocytes. Acta Biochim Biophys Sin (Shanghai) 2015; 47:422-30. [PMID: 25926140 DOI: 10.1093/abbs/gmv033] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 03/03/2015] [Indexed: 11/14/2022] Open
Abstract
Osteoarthritis (OA) is an age-related joint disease that is characterized by the degeneration of articular chondrocytes. Nuclear enzyme poly(ADP-ribose) polymerase 1 (PARP-1) is associated with inflammation response. We investigated the role of PARP-1 in interleukin-1β (IL-1β)-stimulated human articular chondrocytes and its underlying mechanism. Cell viability and apoptosis were evaluated by using 3-(4,5)-dimethylthiahiazo(-z-y1)-3,5-di-phenytetrazoliumromide assay and flow cytometry, respectively. Tumor necrosis factor-α (TNF-α) level was measured by enzyme-linked immunosorbent assay. The mRNA and protein expression levels of PARP-1, IL-1 receptor (IL-1R), inducible nitric oxide synthase (iNOS), matrix metalloproteinases (MMPs), and tissue inhibitor of metalloproteinases-1 (TIMP-1) were determined by real-time reverse transcriptase-polymerase chain reaction and western blot analysis, respectively. The expression and phosphorylation of NF-кB p65 were measured by western blot analysis. Results showed that stimulation of chondrocytes with IL-1β caused a significant up-regulation of PARP-1 and IL-1R, resulting in NF-кB p65 nuclear translocation and phosphorylation associated with an increase of TNF-α secretion and iNOS expression. PARP-1 was inhibited by siRNA transfection. Results showed that PARP-1 inhibition suppressed IL-1β-induced reduction of cell viability and up-regulation of cell apoptosis, with a reduced IL-1R expression. PARP-1 inhibition also effectively reversed IL-1β-induced inflammatory response through inhibiting the IL-1R/NF-кB pathway. These data suggested that PARP-1 inhibition prevents IL-1β-induced inflammation response at least partly by inhibiting the IL-1R/NF-кB signaling pathway in human articular chondrocytes. Moreover, PARP-1 inhibition reduced MMPs expression and increased TIMP-1 expression, suggesting that PARP-1 inhibition could suppress cartilage destruction by modulating the balance between MMPs and TIMP-1. Inhibition of PARP-1 might be useful in the treatment of OA.
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Affiliation(s)
- Yujie Sun
- Orthopedics Department, Yantai Yuhuangding Hospital, Affiliated by Qingdao University Medical College, Yantai 264000, China
| | - Lugang Zhou
- Orthopedics Department, Yantai Yuhuangding Hospital, Affiliated by Qingdao University Medical College, Yantai 264000, China
| | - Dongmei Lv
- Orthopedics Department, Yantai Yuhuangding Hospital, Affiliated by Qingdao University Medical College, Yantai 264000, China
| | - Hongzhi Liu
- Orthopedics Department, Yantai Yuhuangding Hospital, Affiliated by Qingdao University Medical College, Yantai 264000, China
| | - Tian He
- Orthopedics Department, Yantai Yuhuangding Hospital, Affiliated by Qingdao University Medical College, Yantai 264000, China
| | - Xin Wang
- Orthopedics Department, Yantai Yuhuangding Hospital, Affiliated by Qingdao University Medical College, Yantai 264000, China
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