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Liao Y, Yang Y, Zhou G, Chen L, Yang Y, Guo S, Zuo Q, Zou J. Anoikis and SPP1 in idiopathic pulmonary fibrosis: integrating bioinformatics, cell, and animal studies to explore prognostic biomarkers and PI3K/AKT signaling regulation. Expert Rev Clin Immunol 2024; 20:679-693. [PMID: 38318669 DOI: 10.1080/1744666x.2024.2315218] [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: 11/17/2023] [Accepted: 02/01/2024] [Indexed: 02/07/2024]
Abstract
OBJECTIVE This study aims to explore the relevance of anoikis in idiopathic pulmonary fibrosis (IPF) and identify associated biomarkers and signaling pathways. METHOD Unsupervised consensus cluster analysis was employed to categorize IPF patients into subtypes. We utilized Weighted Gene Co-Expression Network Analysis (WGCNA) and Protein-Protein Interaction network construction to identify anoikis-related modules and key genes. A prognostic signature was developed using Lasso and multivariate Cox regression analysis. Single-cell sequencing assessed hub gene expression in various cell types, and both cell and animal experiments confirmed IPF-related pathways. RESULTS We identified two distinct anoikis-associated subtypes with differing prognoses. WGCNA revealed essential hub genes, with SPP1 being prominent in the anoikis-related signature. The anoikis-related signature is effective in determining the prognosis of patients with IPF. Single-cell sequencing highlighted significant differences in SPP1 expression, notably elevated in fibroblasts derived from IPF patients. In vivo and in vitro experiments demonstrated that SPP1 enhances fibrosis in mouse lung fibroblasts by regulating p27 through the PI3K/Akt pathway. CONCLUSION Our research demonstrates a robust prognostic signature associated with anoikis and highlights SPP1 as a pivotal regulator of the PI3K/AKT signaling pathway in pulmonary fibrosis.
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Affiliation(s)
- Yi Liao
- Department of Respiratory and Critical Care Medicine, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Yan Yang
- Department of Respiratory and Critical Care Medicine, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Guanghong Zhou
- Department of Respiratory and Critical Care Medicine, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Lijuan Chen
- Department of Respiratory and Critical Care Medicine, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Yang Yang
- Department of Respiratory and Critical Care Medicine, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Shujin Guo
- Department of Health Management & Institute of Health Management, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Qiunan Zuo
- Department of Geriatric Respiratory, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Jun Zou
- Department of Respiratory and Critical Care Medicine, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
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Luo W, Gu Y, Fu S, Wang J, Zhang J, Wang Y. Emerging opportunities to treat idiopathic pulmonary fibrosis: Design, discovery, and optimizations of small-molecule drugs targeting fibrogenic pathways. Eur J Med Chem 2023; 260:115762. [PMID: 37683364 DOI: 10.1016/j.ejmech.2023.115762] [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: 06/30/2023] [Revised: 08/15/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023]
Abstract
Idiopathic pulmonary fibrosis (IPF) is the most common fibrotic form of idiopathic diffuse lung disease. Due to limited treatment options, IPF patients suffer from poor survival. About ten years ago, Pirfenidone (Shionogi, 2008; InterMune, 2011) and Nintedanib (Boehringer Ingelheim, 2014) were approved, greatly changing the direction of IPF drug design. However, limited efficacy and side effects indicate that neither can reverse the process of IPF. With insights into the occurrence of IPF, novel targets and agents have been proposed, which have fundamentally changed the treatment of IPF. With the next-generation agents, targeting pro-fibrotic pathways in the epithelial-injury model offers a promising approach. Besides, several next-generation IPF drugs have entered phase II/III clinical trials with encouraging results. Due to the rising IPF treatment requirements, there is an urgent need to completely summarize the mechanisms, targets, problems, and drug design strategies over the past ten years. In this review, we summarize known mechanisms, target types, drug design, and novel technologies of IPF drug discovery, aiming to provide insights into the future development and clinical application of next-generation IPF drugs.
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Affiliation(s)
- Wenxin Luo
- Department of Pulmonary and Critical Care Medicine, Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, Frontiers Science Center for Disease-related Molecular Network, Precision Medicine Key Laboratory of Sichuan Province & Precision Medicine Research Center, Joint Research Institution of Altitude Health, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Yilin Gu
- Department of Pulmonary and Critical Care Medicine, Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, Frontiers Science Center for Disease-related Molecular Network, Precision Medicine Key Laboratory of Sichuan Province & Precision Medicine Research Center, Joint Research Institution of Altitude Health, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Siyu Fu
- Department of Pulmonary and Critical Care Medicine, Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, Frontiers Science Center for Disease-related Molecular Network, Precision Medicine Key Laboratory of Sichuan Province & Precision Medicine Research Center, Joint Research Institution of Altitude Health, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Jiaxing Wang
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, 38163, Tennessee, United States
| | - Jifa Zhang
- Department of Pulmonary and Critical Care Medicine, Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, Frontiers Science Center for Disease-related Molecular Network, Precision Medicine Key Laboratory of Sichuan Province & Precision Medicine Research Center, Joint Research Institution of Altitude Health, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China; Frontiers Medical Center, Tianfu Jincheng Laboratory, Chengdu, 610212, Sichuan, China.
| | - Yuxi Wang
- Department of Pulmonary and Critical Care Medicine, Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, Frontiers Science Center for Disease-related Molecular Network, Precision Medicine Key Laboratory of Sichuan Province & Precision Medicine Research Center, Joint Research Institution of Altitude Health, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China; Frontiers Medical Center, Tianfu Jincheng Laboratory, Chengdu, 610212, Sichuan, China.
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3
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Wu X, Zhang Y, Wang P, Li X, Song Z, Wei C, Zhang Q, Luo B, Liu Z, Yang Y, Ren Z, Liu H. Clinical and preclinical evaluation of miR-144-5p as a key target for major depressive disorder. CNS Neurosci Ther 2023; 29:3598-3611. [PMID: 37308778 PMCID: PMC10580367 DOI: 10.1111/cns.14291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 04/06/2023] [Accepted: 05/24/2023] [Indexed: 06/14/2023] Open
Abstract
BACKGROUND Neuronal abnormalities are closely associated with major depressive disorder (MDD). Available evidence suggests a role for microRNAs (miRNAs) in regulating the expression of genes involved in MDD. Hence, miRNAs that can be potential therapeutic targets need to be identified. METHODS A mouse model of chronic unpredictable stress (CUS) was used to evaluate the function of miRNAs in MDD. miR-144-5p was screened from the hippocampi of CUS mice based on sequencing results. Adenovirus-associated vectors were used to overexpress or knockdown miR-144-5p in mice. BpV(pic) and LY294002 were used to determine the relationship between miR-144-5p target genes PTEN and TLR4 in neuronal impairment caused by miR-144-5p deficiency. Western blotting, immunofluorescence, ELISA immunosorbent assay, and Golgi staining were used to detect neuronal abnormalities. Serum samples from healthy individuals and patients with MDD were used to detect miR-144-5p levels in the serum and serum exosomes using qRT-PCR. RESULTS miR-144-5p expression was significantly decreased within the hippocampal dentate gyrus (DG) of CUS mice. Upregulation of miR-144-5p in the DG ameliorated depression-like behavior in CUS mice and attenuated neuronal abnormalities by directly targeting PTEN and TLR4 expression. Furthermore, miR-144-5p knockdown in normal mice led to depression-like behavior via inducing neuronal abnormalities, including abnormal neurogenesis, neuronal apoptosis, altered synaptic plasticity, and neuroinflammation. miR-144-5p deficiency-mediated neuronal impairment was mediated by PI3K/Akt/FoxO1 signaling. Furthermore, miR-144-5p levels were downregulated in the sera of patients with MDD and associated with depressive symptoms. Consistently, serum exosome-derived miR-144-5p levels were decreased in patients with MDD. CONCLUSION miR-144-5p plays a vital role in regulating neuronal abnormalities in depression. Our findings provide translational evidence that miR-144-5p is a new potential therapeutic target for MDD.
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Affiliation(s)
- Xiaodong Wu
- Department of PsychiatryChaohu Hospital of Anhui Medical UniversityHefeiChina
- Department of Psychiatry, School of Mental Health and Psychological SciencesAnhui Medical UniversityHefeiChina
- Department of Psychiatry, Anhui Psychiatric CenterAnhui Medical UniversityHefeiChina
| | - Yulong Zhang
- Department of PsychiatryChaohu Hospital of Anhui Medical UniversityHefeiChina
- Department of Psychiatry, School of Mental Health and Psychological SciencesAnhui Medical UniversityHefeiChina
- Department of Psychiatry, Anhui Psychiatric CenterAnhui Medical UniversityHefeiChina
| | - Ping Wang
- Department of PsychiatryChaohu Hospital of Anhui Medical UniversityHefeiChina
- Department of Psychiatry, School of Mental Health and Psychological SciencesAnhui Medical UniversityHefeiChina
- Department of Psychiatry, Anhui Psychiatric CenterAnhui Medical UniversityHefeiChina
| | - Xiaohui Li
- Department of AnatomyAnhui Medical UniversityHefeiChina
| | - Zhen Song
- Department of PsychiatryChaohu Hospital of Anhui Medical UniversityHefeiChina
- Department of Psychiatry, School of Mental Health and Psychological SciencesAnhui Medical UniversityHefeiChina
- Department of Psychiatry, Anhui Psychiatric CenterAnhui Medical UniversityHefeiChina
| | - Chuke Wei
- Department of PsychiatryChaohu Hospital of Anhui Medical UniversityHefeiChina
- Department of Psychiatry, School of Mental Health and Psychological SciencesAnhui Medical UniversityHefeiChina
- Department of Psychiatry, Anhui Psychiatric CenterAnhui Medical UniversityHefeiChina
| | - Qing Zhang
- Department of PsychiatryChaohu Hospital of Anhui Medical UniversityHefeiChina
- Department of Psychiatry, School of Mental Health and Psychological SciencesAnhui Medical UniversityHefeiChina
- Department of Psychiatry, Anhui Psychiatric CenterAnhui Medical UniversityHefeiChina
| | - Bei Luo
- Department of PsychiatryChaohu Hospital of Anhui Medical UniversityHefeiChina
- Department of Psychiatry, School of Mental Health and Psychological SciencesAnhui Medical UniversityHefeiChina
- Department of Psychiatry, Anhui Psychiatric CenterAnhui Medical UniversityHefeiChina
| | - Zhichun Liu
- Department of PsychiatryChaohu Hospital of Anhui Medical UniversityHefeiChina
- Department of Psychiatry, School of Mental Health and Psychological SciencesAnhui Medical UniversityHefeiChina
- Department of Psychiatry, Anhui Psychiatric CenterAnhui Medical UniversityHefeiChina
| | - Yingying Yang
- Department of PsychiatryChaohu Hospital of Anhui Medical UniversityHefeiChina
- Department of Psychiatry, School of Mental Health and Psychological SciencesAnhui Medical UniversityHefeiChina
- Department of Psychiatry, Anhui Psychiatric CenterAnhui Medical UniversityHefeiChina
| | - Zhenhua Ren
- Department of AnatomyAnhui Medical UniversityHefeiChina
| | - Huanzhong Liu
- Department of PsychiatryChaohu Hospital of Anhui Medical UniversityHefeiChina
- Department of Psychiatry, School of Mental Health and Psychological SciencesAnhui Medical UniversityHefeiChina
- Department of Psychiatry, Anhui Psychiatric CenterAnhui Medical UniversityHefeiChina
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4
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Attenuation of Ventilation-Enhanced Epithelial–Mesenchymal Transition through the Phosphoinositide 3-Kinase-γ in a Murine Bleomycin-Induced Acute Lung Injury Model. Int J Mol Sci 2023; 24:ijms24065538. [PMID: 36982609 PMCID: PMC10053679 DOI: 10.3390/ijms24065538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/08/2023] [Accepted: 03/12/2023] [Indexed: 03/16/2023] Open
Abstract
Mechanical ventilation (MV) used in patients with acute lung injury (ALI) induces lung inflammation and causes fibroblast proliferation and excessive collagen deposition—a process termed epithelial–mesenchymal transition (EMT). Phosphoinositide 3-kinase-γ (PI3K-γ) is crucial in modulating EMT during the reparative phase of ALI; however, the mechanisms regulating the interactions among MV, EMT, and PI3K-γ remain unclear. We hypothesized that MV with or without bleomycin treatment would increase EMT through the PI3K-γ pathway. C57BL/6 mice, either wild-type or PI3K-γ-deficient, were exposed to 6 or 30 mL/kg MV for 5 h after receiving 5 mg/kg AS605240 intraperitoneally 5 days after bleomycin administration. We found that, after bleomycin exposure in wild-type mice, high-tidal-volume MV induced substantial increases in inflammatory cytokine production, oxidative loads, Masson’s trichrome staining level, positive staining of α-smooth muscle actin, PI3K-γ expression, and bronchial epithelial apoptosis (p < 0.05). Decreased respiratory function, antioxidants, and staining of the epithelial marker Zonula occludens-1 were also observed (p < 0.05). MV-augmented bleomycin-induced pulmonary fibrogenesis and epithelial apoptosis were attenuated in PI3K-γ-deficient mice, and we found pharmacological inhibition of PI3K-γ activity through AS605240 (p < 0.05). Our data suggest that MV augmented EMT after bleomycin-induced ALI, partially through the PI3K-γ pathway. Therapy targeting PI3K-γ may ameliorate MV-associated EMT.
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Ma X, Han S, Liu Y, Chen Y, Li P, Liu X, Chang L, Chen YA, Chen F, Hou Q, Hou L. DAPL1 prevents epithelial-mesenchymal transition in the retinal pigment epithelium and experimental proliferative vitreoretinopathy. Cell Death Dis 2023; 14:158. [PMID: 36841807 PMCID: PMC9968328 DOI: 10.1038/s41419-023-05693-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 02/14/2023] [Accepted: 02/16/2023] [Indexed: 02/27/2023]
Abstract
Epithelial-mesenchymal transition (EMT) of the retinal pigment epithelium (RPE) is a hallmark of the pathogenesis of proliferative vitreoretinopathy (PVR) that can lead to severe vision loss. Nevertheless, the precise regulatory mechanisms underlying the pathogenesis of PVR remain largely unknown. Here, we show that the expression of death-associated protein-like 1 (DAPL1) is downregulated in PVR membranes and that DAPL1 deficiency promotes EMT in RPE cells in mice. In fact, adeno-associated virus (AAV)-mediated DAPL1 overexpression in RPE cells of Dapl1-deficient mice inhibited EMT in physiological and retinal-detachment states. In a rabbit model of PVR, ARPE-19 cells overexpressing DAPL1 showed reduced ability to induce experimental PVR, and AAV-mediated DAPL1 delivery attenuated the severity of experimental PVR. Furthermore, a mechanistic study revealed that DAPL1 promotes P21 phosphorylation and its stabilization partially through NFκB (RelA) in RPE cells, whereas the knockdown of P21 led to neutralizing effects on DAPL1-dependent EMT inhibition and enhanced the severity of experimental PVR. These results suggest that DAPL1 acts as a novel suppressor of RPE-EMT and has an important role in antagonizing the pathogenesis of experimental PVR. Hence, this finding has implications for understanding the mechanism of and potential therapeutic applications for PVR.
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Affiliation(s)
- Xiaoyin Ma
- Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003, China. .,State Key Laboratory of Ophthalmology, Optometry and Vision Science, Wenzhou Medical University, Wenzhou, 325003, China.
| | - Shuxian Han
- grid.268099.c0000 0001 0348 3990Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003 China ,grid.412679.f0000 0004 1771 3402Department of Ophthalmology, First Affiliated Hospital of Anhui Medical University, Hefei, 230022 China
| | - Youjia Liu
- grid.268099.c0000 0001 0348 3990Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003 China
| | - Yu Chen
- grid.268099.c0000 0001 0348 3990Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003 China ,grid.268099.c0000 0001 0348 3990State Key Laboratory of Ophthalmology, Optometry and Vision Science, Wenzhou Medical University, Wenzhou, 325003 China
| | - Pingping Li
- grid.268099.c0000 0001 0348 3990Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003 China
| | - Xiaoyan Liu
- grid.268099.c0000 0001 0348 3990Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003 China
| | - Lifu Chang
- grid.268099.c0000 0001 0348 3990Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003 China
| | - Ying-ao Chen
- grid.268099.c0000 0001 0348 3990Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003 China
| | - Feng Chen
- grid.268099.c0000 0001 0348 3990School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003 China
| | - Qiang Hou
- grid.268099.c0000 0001 0348 3990State Key Laboratory of Ophthalmology, Optometry and Vision Science, Wenzhou Medical University, Wenzhou, 325003 China
| | - Ling Hou
- Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003, China. .,State Key Laboratory of Ophthalmology, Optometry and Vision Science, Wenzhou Medical University, Wenzhou, 325003, China.
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6
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The identification and validation of hub genes associated with advanced IPF by weighted gene co-expression network analysis. Funct Integr Genomics 2022; 22:1127-1138. [PMID: 36107393 DOI: 10.1007/s10142-022-00901-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/08/2022] [Accepted: 09/08/2022] [Indexed: 01/18/2023]
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7
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Ma H, Liu S, Li S, Xia Y. Targeting Growth Factor and Cytokine Pathways to Treat Idiopathic Pulmonary Fibrosis. Front Pharmacol 2022; 13:918771. [PMID: 35721111 PMCID: PMC9204157 DOI: 10.3389/fphar.2022.918771] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 05/06/2022] [Indexed: 02/05/2023] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a chronic interstitial lung disease of unknown origin that usually results in death from secondary respiratory failure within 2–5 years of diagnosis. Recent studies have identified key roles of cytokine and growth factor pathways in the pathogenesis of IPF. Although there have been numerous clinical trials of drugs investigating their efficacy in the treatment of IPF, only Pirfenidone and Nintedanib have been approved by the FDA. However, they have some major limitations, such as insufficient efficacy, undesired side effects and poor pharmacokinetic properties. To give more insights into the discovery of potential targets for the treatment of IPF, this review provides an overview of cytokines, growth factors and their signaling pathways in IPF, which have important implications for fully exploiting the therapeutic potential of targeting cytokine and growth factor pathways. Advances in the field of cytokine and growth factor pathways will help slow disease progression, prolong life, and improve the quality of life for IPF patients in the future.
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Affiliation(s)
- Hongbo Ma
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, China.,West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Shengming Liu
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, China.,West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Shanrui Li
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, China.,West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Yong Xia
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Rehabilitation Medicine in Sichuan Province/Rehabilitation Medicine Research Institute, Chengdu, China
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8
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Xu J, Xu H, Ma K, Wang Y, Niu B, Zhang L, Li F. lncRNA Gm16410 Mediates PM 2. 5-Induced Macrophage Activation via PI3K/AKT Pathway. Front Cell Dev Biol 2021; 9:618045. [PMID: 33796524 PMCID: PMC8007886 DOI: 10.3389/fcell.2021.618045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 02/22/2021] [Indexed: 01/08/2023] Open
Abstract
PM2.5 refers to atmospheric particulate matters with a diameter of less than 2.5 μm. The deposit of PM2.5 in lung cells can cause oxidative stress, leading to changes in macrophage polarity, which can subsequently cause pulmonary inflammation. Long-chain non-coding RNA (lncRNA) is a class of transcripts that regulate biological processes through multiple mechanisms. However, the role of lncRNA in PM2.5-induced lung inflammation has not been established. In this study, the biological effects and associated mechanism of lncRNA in PM2.5-induced change in macrophage polarity were investigated. The lncRNA-mediated PM2.5-induced macrophage inflammation and lung inflammation-associated injury were also determined. Mice were exposed to chronic levels of PM2.5, and changes in the expression of lncRNA in the lung were measured by lncRNA microarray. lncRNAs that showed significant changes in expression in response to PM2.5 were identified. lncRNA showing the biggest change was subjected to further analysis to determine its functional roles and mechanisms with respect to macrophage activation. The result showed that a significant reduction in expression of one lncRNA, identified as lncGm16410, was observed in the lung of mice and RAW264.7 cells following exposure to PM2.5. lncGm16410 suppressed PM2.5-induced macrophage activation via the SRC protein-mediated PI3K/AKT signaling pathway. PM2.5 promoted lung inflammation by downregulating the expression of lncGm16410, enhancing the activation of macrophages. Thus, lncGm16410 might provide new insight into the prevention of PM2.5 injury.
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Affiliation(s)
- Jingbin Xu
- Laboratory Medicine College, Dalian Medical University, Dalian, China
| | - Henggui Xu
- Laboratory Medicine College, Dalian Medical University, Dalian, China
| | - Kexin Ma
- Laboratory Medicine College, Dalian Medical University, Dalian, China
| | - Yue Wang
- Laboratory Medicine College, Dalian Medical University, Dalian, China
| | - Ben Niu
- Laboratory Medicine College, Dalian Medical University, Dalian, China
| | - Li Zhang
- Department of Central Laboratory, Dalian Municipal Central Hospital Affiliated of Dalian Medical University, Dalian, China
| | - Fasheng Li
- Laboratory Medicine College, Dalian Medical University, Dalian, China
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9
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Feibi Recipe Reduced Pulmonary Fibrosis Induced by Bleomycin in Mice by Regulating BRP39/IL-17 and TGF β1/Smad3 Signal Pathways. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:5814658. [PMID: 33101446 PMCID: PMC7576352 DOI: 10.1155/2020/5814658] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 08/17/2020] [Accepted: 09/18/2020] [Indexed: 11/18/2022]
Abstract
Fibrotic remodeling has become the result of many lung diseases, and these disorders can be categorized with known as well as unknown etiologies. Idiopathic pulmonary fibrosis is the most fatal disease among the unknown etiology. TGFβ1/Smad3 signal pathway plays an important role in lung fibrosis and epithelial regeneration. This study investigated the effects and mechanism of Feibi Recipe (FBR) on pulmonary fibrosis. In this experiment, C57BL/6 mice were used and bleomycin was used to induce the lung injury. Meanwhile, the study showed a significant reduction in pathological response and mediators of inflammation and fibrosis such as IL-6, ICAM-1, IL-13, IL-17, BRP-39, TGFβ1, Smad3, and Smad7 were identified. Collectively, the FBR appears to attenuate the lung injury and the modeling of fibrosis in mice.
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10
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Src family kinases and pulmonary fibrosis: A review. Biomed Pharmacother 2020; 127:110183. [PMID: 32388241 DOI: 10.1016/j.biopha.2020.110183] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 03/26/2020] [Accepted: 04/17/2020] [Indexed: 01/15/2023] Open
Abstract
Src family kinases (SFKs) is a non-receptor protein tyrosine kinases family. They are crucial in signal transduction and regulation of various cell biological processes, such as proliferation, differentiation and apoptosis. The role and mechanism of SFKs in tumorigenesis have been widely studied. However, more and more studies have also shown that SFKs are involved in the pathogenesis of pulmonary fibrosis (PF). Myofibroblasts activation, epithelial-mesenchymal transition and inflammation response are three pivotal pathomechanisms in the development of pulmonary fibrotic disease. In this article, we summarize the roles of SFKs in these biological processes. SFKs play a crucial role in the pathogenesis of PF, making it a promising molecular target for the treatment of these diseases. We will pay special attention to the role of SFKs in idiopathic pulmonary fibrosis (IPF), and also emphasize the important findings in other pulmonary fibrotic diseases because their pathological mechanisms are similar. We will then describe the translation results obtained with SFKs inhibitors in basic and clinical studies.
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CO-Releasing Molecule-2 Induces Nrf2/ARE-Dependent Heme Oxygenase-1 Expression Suppressing TNF-α-Induced Pulmonary Inflammation. J Clin Med 2019; 8:jcm8040436. [PMID: 30934992 PMCID: PMC6517967 DOI: 10.3390/jcm8040436] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 03/22/2019] [Accepted: 03/23/2019] [Indexed: 11/16/2022] Open
Abstract
The upregulation of heme oxygenase-1 (HO-1) by the carbon monoxide-releasing molecule (CORM)-2 may be mediated through the activation of nicotinamide adenine dinucleotide phosphate (NADPH) oxidases [Nox] and reactive oxygen species (ROS) generation, which could provide cytoprotection against various cellular injuries. However, the detailed mechanisms of CORM-2-induced HO-1 expression in human pulmonary alveolar epithelial cells (HPAEpiCs) remain largely unknown. Therefore, we dissected the mechanisms underlying CORM-2-induced HO-1 expression in HPAEpiCs. We found that the administration of mice with CORM-2 attenuated the tumor necrosis factor-alpha (TNF-α)-induced intercellular adhesion molecule-1 (ICAM-1) expression and leukocyte count as revealed by immunohistochemical staining, western blot, real-time polymerase chain reaction (PCR), and cell count. Furthermore, TNF-α-induced ICAM-1 expression associated with monocyte adhesion to HPAEpiCs was attenuated by infection with adenovirus (adv)-HO-1 or incubation with CORM-2. These inhibitory effects of HO-1 were reversed by pretreatment with hemoglobin (Hb). Moreover, CORM-2-induced HO-1 expression was mediated via the phosphorylation of p47phox, c-Src, epidermal growth factor receptor (EGFR), Akt, and NF-E2-related factor 2 (Nrf2), which were inhibited by their pharmacological inhibitors, including diphenyleneiodonium (DPI) or apocynin (APO), ROS [N-acetyl-L-cysteine (NAC)], PP1, AG1478, PI3K (LY294002), or Akt (SH-5), and small interfering RNAs (siRNAs). CORM-2-enhanced Nrf2 expression, and anti-oxidant response element (ARE) promoter activity was also inhibited by these pharmacological inhibitors. The interaction between Nrf2 and AREs was confirmed with a chromatin immunoprecipitation (ChIP) assay. These findings suggest that CORM-2 increases the formation of the Nrf2 and AREs complex and binds with ARE-binding sites via Src, EGFR, and PI3K/Akt, which further induces HO-1 expression in HPAEpiCs. Thus, the HO-1/CO system might suppress TNF-α-mediated inflammatory responses and exert a potential therapeutic strategy in pulmonary diseases.
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Tian Y, Li H, Qiu T, Dai J, Zhang Y, Chen J, Cai H. Loss of PTEN induces lung fibrosis via alveolar epithelial cell senescence depending on NF-κB activation. Aging Cell 2019; 18:e12858. [PMID: 30548445 PMCID: PMC6351835 DOI: 10.1111/acel.12858] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 08/27/2018] [Accepted: 09/15/2018] [Indexed: 12/13/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is an aging‐associated disease with poor prognosis. Currently, there are no effective drugs for preventing the disease process. The mechanisms underlying the role of alveolar epithelial cell (AEC) senescence in the pathogenesis of IPF remain poorly understood. We aimed to explore whether PTEN/NF‐κB activated AEC senescence thus resulting in lung fibrosis. First, we investigated the association between the activation of PTEN/NF‐κB and cellular senescence in lung tissues from IPF patients. As a result, decreased PTEN, activated NF‐κB and increased senescent markers (P21WAF1, P16ink4a, and SA‐β‐gal) were found in AECs in fibrotic lung tissues detected by immunohistochemistry (IHC) and immunofluorescence (IF). In vitro experiments showed increased expression levels of senescent markers and augmented senescence‐associated secretory phenotype (SASP) in AECs treated with bleomycin (Blm); however, PTEN was reduced significantly following IκB, IKK, and NF‐κB activation after stimulation with Blm in AECs. AEC senescence was accelerated by PTEN knockdown, whereas senescence was reversed via NF‐κB knockdown and the pharmacological inhibition (BMS‐345541) of the NF‐κB pathway. Interestingly, we observed increased collagen deposition in fibroblasts cultured with the supernatants collected from senescent AECs. Conversely, the deposition of collagen in fibroblasts was reduced with exposure to the supernatants collected from NF‐κB knockdown AECs. These findings indicated that senescent AECs controlled by the PTEN/NF‐κB pathway facilitated collagen accumulation in fibroblasts, resulting in lung fibrosis. In conclusion, our study supports the notion that as an initial step in IPF, the senescence process in AECs may be a potential therapeutic target, and the PTEN/NF‐κB pathway may be a promising candidate for intervention.
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Affiliation(s)
- Yaqiong Tian
- Department of Respiratory Medicine The Affiliated Drum Tower Hospital of Nanjing University Medical School Nanjing China
| | - Hui Li
- Department of Respiratory Medicine The Affiliated Drum Tower Hospital of Nanjing University Medical School Nanjing China
| | - Ting Qiu
- Department of Respiratory Medicine KunShan Hospital of Traditional Chinese Medicine Kunshan China
| | - Jinghong Dai
- Department of Respiratory Medicine The Affiliated Drum Tower Hospital of Nanjing University Medical School Nanjing China
| | - Yingwei Zhang
- Department of Respiratory Medicine The Affiliated Drum Tower Hospital of Nanjing University Medical School Nanjing China
| | - Jingyu Chen
- Jiangsu Key Laboratory of Organ Transplantation, Wuxi People’s Hospital Nanjing Medical University Wuxi China
| | - Hourong Cai
- Department of Respiratory Medicine The Affiliated Drum Tower Hospital of Nanjing University Medical School Nanjing China
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Protective mechanisms of resveratrol derivatives against TNF-α-induced inflammatory responses in rat mesangial cells. Cytokine 2018; 113:380-392. [PMID: 30389230 DOI: 10.1016/j.cyto.2018.10.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 08/18/2018] [Accepted: 10/08/2018] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Resveratrol has been reported to alleviate inflammatory responses and oxidative stress in mesangial cells and in several types of renal injury in animal models. Previously, the active resveratrol derivatives from the roots of Vitis thunbergii Sieb. & Zucc. (Vitaceae) were shown to have significant anti-platelet and anti-oxidative activities. However, the anti-inflammatory mechanisms of these resveratrol derivatives in rat mesangial cells (RMCs) have not been clarified fully. METHODS The protective mechanisms of resveratrol derivatives involved in tumor necrosis factor-α (TNF-α)-induced inflammatory responses were assessed by Western blot analysis, real-time PCR, and RT-PCR. The involvement of various signaling molecules in these responses was investigated using selective pharmacological inhibitors. RESULTS Nontoxic concentrations of the resveratrol derivatives significantly attenuated cytosolic phospholipase A2 (cPLA2) and cyclooxygenase 2 (COX-2) expression in RMCs challenged by TNF-α. These resveratrol derivatives inhibited TNF-α-activated ERK1/2 and JNK1/2 without affecting p38 phosphorylation. Next, we demonstrated that TNF-α induced NF-κB activation, translocation, and promoter activity, which was inhibited by pretreatment with resveratrol derivatives in RMCs. CONCLUSION The protective mechanisms of resveratrol derivatives against TNF-α-stimulated inflammatory responses via cPLA2/COX-2/PGE2 inhibition was caused by the attenuation of the JNK1/2, ERK1/2, and NF-κB signaling pathways in RMCs.
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Zhang J, Li Q, Shao Q, Song J, Zhou B, Shu P. Effects of panax notoginseng saponin on the pathological ultrastructure and serum IL‐6 and IL‐8 in pulmonary fibrosis in rabbits. J Cell Biochem 2018; 119:8410-8418. [DOI: 10.1002/jcb.27045] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 04/23/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Jizhou Zhang
- Department of OncologyWenzhou Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medicine UniversityWenzhouZhejiangChina
| | - Qing Li
- Department of Integrated TCM & Western MedicineThe Second Affiliated Hospital of Kunming Medical CollegeKunmingYunnanChina
| | - Qiqi Shao
- Department of NursingWenzhou Lucheng District Wuma Community Health Service CenterWenzhouZhejiangChina
| | - Jingling Song
- Teaching and Research Section of PathologyKunming Medical UniversityKunmingYunnanChina
| | - Bin Zhou
- Department of OncologyWenzhou Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medicine UniversityWenzhouZhejiangChina
| | - Peng Shu
- Department of OncologyJiangsu Province Hospital of TCMNanjingJiangsuChina
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Protective effect of α-lipoic acid against radiation-induced fibrosis in mice. Oncotarget 2017; 7:15554-65. [PMID: 26799284 PMCID: PMC4941260 DOI: 10.18632/oncotarget.6952] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 12/05/2015] [Indexed: 01/08/2023] Open
Abstract
Radiation-induced fibrosis (RIF) is one of the most common late complications of radiation therapy. We found that α-lipoic acid (α-LA) effectively prevents RIF. In RIF a mouse model, leg contracture assay was used to test the in vivo efficacy of α-LA. α-LA suppressed the expression of pro-fibrotic genes after irradiation, both in vivo and in vitro, and inhibited the up-regulation of TGF-β1-mediated p300/CBP activity. Thus, α-LA prevents radiation-induced fibrosis (RIF) by inhibiting the transcriptional activity of NF-κB through inhibition of histone acetyltransferase activity. α-LA is a new therapeutic methods that can be used in the prevention-treatment of RIF.
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Deng X, Zhou X, Deng Y, Liu F, Feng X, Yin Q, Gu Y, Shi S, Xu M. Thrombin Induces CCL2 Expression in Human Lung Fibroblasts via p300 Mediated Histone Acetylation and NF-KappaB Activation. J Cell Biochem 2017; 118:4012-4019. [PMID: 28407300 DOI: 10.1002/jcb.26057] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 04/11/2017] [Indexed: 02/05/2023]
Abstract
Thrombin has been shown to play a key role in lung diseases such as pulmonary fibrosis via the induction of fibrotic cytokine- chemokine (CC motif) ligand-2 (CCL2) expression. We previously reported that transcription factor nuclear factor-κB (NF-κB) is responsible for thrombin-induced CCL2 expression in human lung fibroblasts (HLFs). Here, we extended our study to investigate the epigenetic regulation mechanism for thrombin-induced CCL2 expression in HLFs. HLFs were cultured in F-12 medium. CCL2 protein and mRNA levels were detected by ELISA and quantitative real-time PCR, respectively. Histone, histone acetyltransferases, and NF-κB binding to CCL2 promoter were detected by ChIP assay. NF-κB activation was detected by Western blotting. We revealed that increased binding of histone acetyltransferase p300 and acetylated histone H3 and H4 to CCL2 promoter are responsible for thrombin induced CCL2 expression in HLF cells. In addition, p300 inhibition attenuates both thrombin induced-CCL2 expression and histone H3 and H4 acetylation in HLFs, suggesting that p300 is involved in thrombin-induced CCL2 expression via hyperacetylating histone H3 and H4. Our data further showed that p300 also regulates CCL2 expression via interaction with NF-κB p65, as depletion of p300 inhibits both NF-κB p65 activation and its binding to CCL2 promoter. The findings strongly suggest that epigenetic dysregulation and the interaction between histone acetyltransferase and transcription factor may be responsible for thrombin induced-CCL2 expression in HLFs. Increased understanding of the epigenetic mechanisms of CCL2 regulation may provide opportunities for identifying novel molecular targets for therapeutic purposes. J. Cell. Biochem. 118: 4012-4019, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Xiaoling Deng
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, 361102, Fujian Province, People's Republic of China
| | - Xiaoqiong Zhou
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, 361102, Fujian Province, People's Republic of China
| | - Yan Deng
- Department of Respiratory Medicine, The First Affiliated Hospital of Shantou University Medical College, Shantou, 515041, Guangdong Province, People's Republic of China
| | - Fan Liu
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, 361102, Fujian Province, People's Republic of China
| | - Xiaofan Feng
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, 361102, Fujian Province, People's Republic of China
| | - Qi Yin
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, 361102, Fujian Province, People's Republic of China
| | - Yinzhen Gu
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, 361102, Fujian Province, People's Republic of China
| | - Songlin Shi
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, 361102, Fujian Province, People's Republic of China
| | - Mingyan Xu
- Department of Oral Biology and Biomaterial, Xiamen Stomatological Research Institute, Xiamen Medical College, Xiamen, 361000, Fujian Province, People's Republic of China
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Huang ZW, Lien GS, Lin CH, Jiang CP, Chen BC. p300 and C/EBPβ-regulated IKKβ expression are involved in thrombin-induced IL-8/CXCL8 expression in human lung epithelial cells. Pharmacol Res 2017; 121:33-41. [PMID: 28428115 DOI: 10.1016/j.phrs.2017.04.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 04/07/2017] [Accepted: 04/14/2017] [Indexed: 12/17/2022]
Abstract
Asthma and chronic obstructive pulmonary disease (COPD) are common chronic lung inflammatory diseases. Thrombin and interleukin (IL)-8/C-X-C chemokine ligand 8 (CXCL8) play critical roles in lung inflammation. Our previous study showed that c-Src-dependent IκB kinase (IKK)/IκBα/nuclear factor (NF)-κB and mitogen-activated protein kinase kinase kinase 1 (MEKK1)/extracellular signal-regulated kinase (ERK)/ribosomal S6 protein kinase (RSK)-dependent CAAT/enhancer-binding protein β (C/EBPβ) activation are involved in thrombin-induced IL-8/CXCL8 expression in human lung epithelial cells. In this study, we aimed to investigate the roles of p300 and C/EBPβ-reliant IKKβ expression in thrombin-induced IL-8/CXCL8 expression. Thrombin-induced increases in IL-8/CXCL8-luciferase activity and IL-8/CXCL8 release were inhibited by p300 small interfering (siRNA). Thrombin-caused histone H3 acetylation was attenuated by p300 siRNA. Stimulation of cells with thrombin for 12h resulted in increases in IKKβ expression and phosphorylation in human lung epithelial cells. However, thrombin did not affect p65 expression. Moreover, 12h of thrombin stimulation produced increases in IKKβ expression and phosphorylation, and IκBα phosphorylation, which were inhibited by C/EBPβ siRNA. Finally, treatment of cells with thrombin caused increases in p300 and C/EBPβ complex formation, p65 and C/EBPβ complex formation, and recruitment of p300, p65, and C/EBPβ to the IL-8/CXCL8 promoter. These results imply that p300-dependent histone H3 acetylation and C/EBPβ-regulated IKKβ expression contribute to thrombin-induced IL-8/CXCL8 expression in human lung epithelial cells. Results of this study will help clarify C/EBPβ signaling pathways involved in thrombin-induced IL-8/CXCL8 expression in human lung epithelial cells.
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Affiliation(s)
- Zheng-Wei Huang
- Graduate Institute of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Gi-Shih Lien
- Division of Gastroenterology, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - Chien-Huang Lin
- Graduate Institute of Medical Science, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chun-Ping Jiang
- Graduate Institute of Medical Science, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Bing-Chang Chen
- School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan; Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
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Novotny LA, Bakaletz LO. Intercellular adhesion molecule 1 serves as a primary cognate receptor for the Type IV pilus of nontypeable Haemophilus influenzae. Cell Microbiol 2016; 18:1043-55. [PMID: 26857242 DOI: 10.1111/cmi.12575] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 01/07/2016] [Accepted: 01/31/2016] [Indexed: 11/28/2022]
Abstract
Nontypeable Haemophilus influenzae (NTHI) utilizes the Type IV pilus (Tfp) to adhere to respiratory tract epithelial cells thus colonizing its human host; however, the host cell receptor to which this adhesive protein binds is unknown. From a panel of receptors engaged by Tfp expressed by other bacterial species, we showed that the majority subunit of NTHI Tfp, PilA, bound to intercellular adhesion molecule 1 (ICAM1) and that this interaction was both specific and of high affinity. Further, Tfp-expressing NTHI inoculated on to polarized respiratory tract epithelial cells that expressed ICAM1 were significantly more adherent compared to Tfp-deficient NTHI or NTHI inoculated on to epithelial cells to which ICAM1 gene expression was silenced. Moreover, pre-incubation of epithelial cells with recombinant soluble PilA (rsPilA) blocked adherence of NTHI, an outcome that was abrogated by admixing rsPilA with ICAM1 prior to application on to the target cells. Epithelial cells infected with adenovirus or respiratory syncytial virus showed increased expression of ICAM1; this outcome supported augmented adherence of Tfp-expressing NTHI. Collectively, these data revealed the cognate receptor for NTHI Tfp as ICAM1 and promote continued development of a Tfp-targeted vaccine for NTHI-induced diseases of the airway wherein upper respiratory tract viruses play a key predisposing role.
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Affiliation(s)
- Laura A Novotny
- Center for Microbial Pathogenesis, The Research Institute at Nationwide Children's Hospital and The Ohio State University College of Medicine, Columbus, OH, USA
| | - Lauren O Bakaletz
- Center for Microbial Pathogenesis, The Research Institute at Nationwide Children's Hospital and The Ohio State University College of Medicine, Columbus, OH, USA
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Smooth Muscle Cell-targeted RNA Aptamer Inhibits Neointimal Formation. Mol Ther 2016; 24:779-87. [PMID: 26732878 DOI: 10.1038/mt.2015.235] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 12/27/2015] [Indexed: 12/13/2022] Open
Abstract
Inhibition of vascular smooth muscle cell (VSMC) proliferation by drug eluting stents has markedly reduced intimal hyperplasia and subsequent in-stent restenosis. However, the effects of antiproliferative drugs on endothelial cells (EC) contribute to delayed re-endothelialization and late stent thrombosis. Cell-targeted therapies to inhibit VSMC remodeling while maintaining EC health are necessary to allow vascular healing while preventing restenosis. We describe an RNA aptamer (Apt 14) that functions as a smart drug by preferentially targeting VSMCs as compared to ECs and other myocytes. Furthermore, Apt 14 inhibits phosphatidylinositol 3-kinase/protein kinase-B (PI3K/Akt) and VSMC migration in response to multiple agonists by a mechanism that involves inhibition of platelet-derived growth factor receptor (PDGFR)-β phosphorylation. In a murine model of carotid injury, treatment of vessels with Apt 14 reduces neointimal formation to levels similar to those observed with paclitaxel. Importantly, we confirm that Apt 14 cross-reacts with rodent and human VSMCs, exhibits a half-life of ~300 hours in human serum, and does not elicit immune activation of human peripheral blood mononuclear cells. We describe a VSMC-targeted RNA aptamer that blocks cell migration and inhibits intimal formation. These findings provide the foundation for the translation of cell-targeted RNA therapeutics to vascular disease.
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Thrombin-induced IL-8/CXCL8 release is mediated by CK2, MSK1, and NF-κB pathways in human lung epithelial cells. Eur J Pharmacol 2015; 767:135-43. [PMID: 26463037 DOI: 10.1016/j.ejphar.2015.10.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 10/07/2015] [Accepted: 10/08/2015] [Indexed: 12/15/2022]
Abstract
Airway inflammation plays a major role in the pathophysiology of lung inflammatory diseases such as asthma. Thrombin, a serine protease, is known to mediate central functions in thrombosis and hemostasis and also plays a critical role in lung inflammation via producing chemokine release including interleukin (IL)-8/CXCL8. Our previous studies showed that c-Src- and Rac-dependent nuclear factor (NF)-κB signaling pathways participate in thrombin-induced IL-8/CXCL8 release in human lung epithelial cells. In this study, we further investigated the role of casein kinase 2 (CK2)/mitogen stress-activated protein kinase 1 (MSK1)-dependent p65 phosphorylation in thrombin-induced NF-κB activation and IL-8/CXCL8 release. Thrombin-induced IL-8/CXCL8 release was inhibited by CK2 inhibitors (apigenin and tetrabromobenzotriazole, TBB), small interfering RNA of CK2β (CK2β siRNA), and MSK1 siRNA. Treatment of cells with thrombin caused increases in CK2β phosphorylation at Ser209, which was inhibited by a protein kinase C α (PKCα) inhibitor (Ro-32-0432). Thrombin-induced MSK1 phosphorylation at Ser581 and Akt phosphorylation at Ser473 were inhibited by apigenin. Moreover, the thrombin-induced increase in IL-8/CXCL8 release was attenuated by p65 siRNA. Stimulation of cells with thrombin resulted in an increase in p65 phosphorylation at Ser276, which was inhibited by apigenin and MSK1 siRNA. Thrombin-induced κB-luciferase activity was also inhibited by apigenin and MSK1 siRNA. Taken together, these results show that thrombin activates the PKCα/CK2/MSK1 signaling pathways, which in turn initiates p65 phosphorylation and NF-κB activation, and ultimately induces IL-8/CXCL8 release in human lung epithelial cells.
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Chien PTY, Lin CC, Hsiao LD, Yang CM. c-Src/Pyk2/EGFR/PI3K/Akt/CREB-activated pathway contributes to human cardiomyocyte hypertrophy: Role of COX-2 induction. Mol Cell Endocrinol 2015; 409:59-72. [PMID: 25869400 DOI: 10.1016/j.mce.2015.04.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 03/23/2015] [Accepted: 04/07/2015] [Indexed: 12/27/2022]
Abstract
Thrombin and COX-2 regulating cardiac hypertrophy are via various signaling cascades. Several transcriptional factors including CREB involve in COX-2 expression. However, the interplay among thrombin, CREB, and COX-2 in primary human neonatal ventricular cardiomyocytes remains unclear. In this study, thrombin-induced COX-2 promoter activity, mRNA and protein expression, and PGE2 synthesis were attenuated by pretreatment with the inhibitors of c-Src (PP1), Pyk2 (PF431396), EGFR (AG1478), PI3K/Akt (LY294002/SH-5), and p300 (GR343), or transfection with siRNAs of c-Src, Pyk2, EGFR, p110, Akt, CREB, and p300. Moreover, thrombin-stimulated phosphorylation of c-Src, Pyk2, EGFR, Akt, CREB and p300 was attenuated by their respective inhibitors. These results indicate that thrombin-induced COX-2 expression is mediated through PAR-1/c-Src/Pyk2/EGFR/PI3K/Akt linking to CREB and p300 cascades. Functionally, thrombin-induced hypertrophy and ANF/BNP release were, at least in part, mediated through a PAR-1/COX-2-dependent pathway. We uncover the importance of COX-2 regarding human cardiomyocyte hypertrophy that will provide a therapeutic intervention in cardiovascular diseases.
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Affiliation(s)
- Peter Tzu-Yu Chien
- Graduate Institute of Biomedical Sciences, Health Ageing Research Center, College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan; Department of Physiology and Pharmacology, Health Ageing Research Center, College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan
| | - Chih-Chung Lin
- Department of Anesthetics, Chang Gung Memorial Hospital at Lin-Kou and College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan
| | - Li-Der Hsiao
- Department of Anesthetics, Chang Gung Memorial Hospital at Lin-Kou and College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan
| | - Chuen-Mao Yang
- Graduate Institute of Biomedical Sciences, Health Ageing Research Center, College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan; Department of Physiology and Pharmacology, Health Ageing Research Center, College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan.
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