1
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Li W, Du D, Huang Y, Xu C, Liu Y, Wu X, Yang J, Liu Z, Ma J, Huangfu C. Improvement of skin wound healing by giant salamander skin mucus gel wrapped with bone marrow mesenchymal stem cells via affecting integrin family molecules. Aging (Albany NY) 2024; 16:7902-7914. [PMID: 38709270 PMCID: PMC11132021 DOI: 10.18632/aging.205792] [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: 01/05/2024] [Accepted: 04/10/2024] [Indexed: 05/07/2024]
Abstract
BACKGROUND Traditional bandages, gauze, and cotton balls are increasingly insufficient for addressing complex war injuries characterized by severe bleeding and diverse wound conditions. The giant salamander, a species of high medical value, secretes a unique mucus when stimulated, which has potential applications in wound care. MATERIALS Giant salamander skin mucus gel dressing wrapped with bone marrow mesenchymal stem cells (BMSCs-GSSM-gel) was prepared and validated. Skin wound injury of rabbit and mouse models were established. Hematoxylin and Eosin, Masson's trichrome, and Sirius red staining were performed. The platelet aggregation rate and coagulation items were measured. Transcriptome sequencing was performed to find potential differential expression genes. RESULTS Preparation and characterization of BMSCs-GSSM-gel were performed, and BMSCs-GSSM-gel particles with a diameter of about 200 nm were obtained. BMSCs-GSSM-gel accelerated wound healing in both rabbit and mouse models. BMSCs-GSSM-gel significantly promoted hemostasis via increasing platelet aggregation rate and fibrinogen, but decreasing activated partial thromboplastin time, thrombin time, and prothrombin time. BMSCs-GSSM-gel treatment significantly impacted several genes associated with cell adhesion, inflammatory response, collagen-containing extracellular matrix, and the positive regulation of cell migration based on Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis. Integrin Subunit Beta 4 (ITGB4), Integrin Subunit Alpha 3 (ITGA3), and Laminin Subunit Beta 3 (LAMB3) might be involved in the wound healing process by BMSCs-GSSM-gel. CONCLUSIONS We proved the BMSCs-GSSM-gel greatly improved the skin wound healing, and it might play a crucial role in the application fields of skin damage repair.
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Affiliation(s)
- Wei Li
- Department of Cardiology, The 305 Hospital of People’s Liberation Army of China, Beijing 100017, China
| | - Dayong Du
- Department of Cardiology, The 305 Hospital of People’s Liberation Army of China, Beijing 100017, China
| | - Yan Huang
- Department of Neurology, Chengdu Third People’s Hospital, Chengdu 610014, China
| | - Cui Xu
- Department of Medical Administration, The 305 Hospital of People's Liberation Army of China, Beijing 100017, China
| | - Yang Liu
- Department of Cardiology, The 305 Hospital of People’s Liberation Army of China, Beijing 100017, China
| | - Xiaohong Wu
- Department of Cardiology, The 305 Hospital of People’s Liberation Army of China, Beijing 100017, China
| | - Jie Yang
- Department of Cardiology, The 305 Hospital of People’s Liberation Army of China, Beijing 100017, China
| | - Zhipeng Liu
- Department of Medical Administration, The 305 Hospital of People's Liberation Army of China, Beijing 100017, China
| | - Jianxin Ma
- Department of Cadre Ward, The 305 Hospital of People’s Liberation Army of China, Beijing 100017, China
| | - Chaoji Huangfu
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
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2
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Wan R, Srikaram P, Guntupalli V, Hu C, Chen Q, Gao P. Cellular senescence in asthma: from pathogenesis to therapeutic challenges. EBioMedicine 2023; 94:104717. [PMID: 37442061 PMCID: PMC10362295 DOI: 10.1016/j.ebiom.2023.104717] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 06/29/2023] [Accepted: 06/30/2023] [Indexed: 07/15/2023] Open
Abstract
Asthma is a heterogeneous chronic respiratory disease that impacts nearly 10% of the population worldwide. While cellular senescence is a normal physiological process, the accumulation of senescent cells is considered a trigger that transforms physiology into the pathophysiology of a tissue/organ. Recent advances have suggested the significance of cellular senescence in asthma. With this review, we focus on the literature regarding the physiology and pathophysiology of cellular senescence and cellular stress responses that link the triggers of asthma to cellular senescence, including telomere shortening, DNA damage, oncogene activation, oxidative-related senescence, and senescence-associated secretory phenotype (SASP). The association of cellular senescence to asthma phenotypes, airway inflammation and remodeling, was also reviewed. Importantly, several approaches targeting cellular senescence, such as senolytics and senomorphics, have emerged as promising strategies for asthma treatment. Therefore, cellular senescence might represent a mechanism in asthma, and the senescence-related molecules and pathways could be targeted for therapeutic benefit.
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Affiliation(s)
- Rongjun Wan
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA; Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Prakhyath Srikaram
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA
| | - Vineeta Guntupalli
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA
| | - Chengping Hu
- Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Qiong Chen
- Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Peisong Gao
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA.
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3
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Xu K, Yao Y, Liu H, Yang M, Yuan L, Du X, Yang Y, Qin L, Wang W, Zhou K, Wu X, Liu C. ITGB4 deficiency induces DNA damage by downregulating HDAC1 in airway epithelial cells under stress stimulation. Pediatr Allergy Immunol 2022; 33:e13871. [PMID: 36282138 DOI: 10.1111/pai.13871] [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: 07/05/2022] [Revised: 10/01/2022] [Accepted: 10/04/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND DNA damage in airway epithelia under exogenous disruptors can trigger various pulmonary diseases. Integrin beta 4 (ITGB4) is a structural adhesion molecule, which is indicated to regulate the process of DNA damage in airway epithelia for its unique long cytoplasmic domain subunit. METHODS The expression level of ITGB4 and the degree of DNA damage were observed in the house dust mite (HDM)-stressed model and ozone-challenged model, respectively. Besides, ITGB4 conditional knockout mice and ITGB4-deficient airway epithelial cells were constructed to observe the influence of ITGB4 deficiency on DNA damage. Furthermore, the influence of ITGB4 deficiency on HDAC1 expression in airway epithelia was determined under stress stimulation. Finally, corresponding intervention strategies were carried out to verify the involvement of the ITGB4-mediated HDAC1 pathway in DNA damage of airway epithelial cells. RESULTS HDM stress and ozone challenge reduced the expression of ITGB4, which is accompanied by the increased expression of 8-oxoG and γ-H2AX both in vivo and in vitro. Moreover, ITGB4 deficiency in airway epithelia aggravates the degree of DNA damage under HDM stimulation and ozone stress, respectively. Furthermore, ITGB4 deficiency downregulated the expression of HDAC1 during DNA damage, and restoring HDAC1 can reverse the enhanced DNA damage in airway epithelial cells after exogenous stress. CONCLUSIONS This study confirmed the involvement of ITGB4 in the regulation of DNA damage through mediating HDAC1 in airway epithelial cells under exogenous stress. These results supply some useful insights into the mechanism of DNA damage in airway epithelial cells, which would provide possible targets for early prediction and intervention of pulmonary diseases.
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Affiliation(s)
- Kun Xu
- School of Medicine, Hunan Normal University, Changsha, China
| | - Ye Yao
- Department of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Xiangya Hospital, Central South University, Changsha, China.,Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China.,Basic and Clinical Research Laboratory of Major Respiratory Diseases, Central South University, Changsha, China
| | - Huijun Liu
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China.,Basic and Clinical Research Laboratory of Major Respiratory Diseases, Central South University, Changsha, China
| | - Ming Yang
- Centre for Asthma and Respiratory Disease, School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle and Hunter Medical Research Institute, Callaghan, New South Wales, Australia
| | - Lin Yuan
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China.,Basic and Clinical Research Laboratory of Major Respiratory Diseases, Central South University, Changsha, China
| | - Xizi Du
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China.,Basic and Clinical Research Laboratory of Major Respiratory Diseases, Central South University, Changsha, China
| | - Yu Yang
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China.,Basic and Clinical Research Laboratory of Major Respiratory Diseases, Central South University, Changsha, China
| | - Ling Qin
- Department of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Xiangya Hospital, Central South University, Changsha, China.,Basic and Clinical Research Laboratory of Major Respiratory Diseases, Central South University, Changsha, China
| | - Weijie Wang
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China.,Basic and Clinical Research Laboratory of Major Respiratory Diseases, Central South University, Changsha, China
| | - Kai Zhou
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China.,Basic and Clinical Research Laboratory of Major Respiratory Diseases, Central South University, Changsha, China
| | - Xinyu Wu
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China.,Basic and Clinical Research Laboratory of Major Respiratory Diseases, Central South University, Changsha, China
| | - Chi Liu
- Department of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Xiangya Hospital, Central South University, Changsha, China.,Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China.,Basic and Clinical Research Laboratory of Major Respiratory Diseases, Central South University, Changsha, China
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4
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Chi Y, Chen Y, Jiang W, Huang W, Ouyang M, Liu L, Pan Y, Li J, Qu X, Liu H, Liu C, Deng L, Qin X, Xiang Y. Deficiency of Integrin β4 Results in Increased Lung Tissue Stiffness and Responds to Substrate Stiffness via Modulating RhoA Activity. Front Cell Dev Biol 2022; 10:845440. [PMID: 35309934 PMCID: PMC8926985 DOI: 10.3389/fcell.2022.845440] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 02/11/2022] [Indexed: 12/12/2022] Open
Abstract
The interaction between extracellular matrix (ECM) and epithelial cells plays a key role in lung development. Our studies found that mice with conditional integrin β4 (ITGB4) knockout presented lung dysplasia and increased stiffness of lung tissues. In accordance with our previous studies regarding the functions of ITGB4 in bronchial epithelial cells (BECs), we hypothesize that the decreased ITGB4 expression during embryonic stage leads to abnormal ECM remodeling and increased tissue stiffness, thus impairing BECs motility and compromising lung development. In this study, we examined lung tissue stiffness in normal and ITGB4 deficiency mice using Atomic Force Microscopy (AFM), and demonstrated that ITGB4 deficiency resulted in increased lung tissue stiffness. The examination of ECM components collagen, elastin, and lysyl oxidase (LOX) family showed that the expression of type VI collagen, elastin and LOXL4 were significantly elevated in the ITGB4-deficiency mice, compared with those in normal groups. Airway epithelial cell migration and proliferation capacities on normal and stiff substrates were evaluated through video-microscopy and flow cytometry. The morphology of the cytoskeleton was detected by laser confocal microscopy, and RhoA activities were determined by fluorescence resonance energy transfer (FRET) microscopy. The results showed that migration and proliferation of ITGB4 deficiency cells were noticeably inhibited, along decreased cytoskeleton stabilization, and hampered RhoA activity, especially for cells cultured on the stiff substrate. These results suggest that decreased ITGB4 expression results in increased lung tissue stiffness and impairs the adaptation of bronchial epithelial cells to substrate stiffness, which may be related to the occurrence of broncho pulmonary dysplasia.
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Affiliation(s)
- Yinxiu Chi
- School of Basic Medicine, Central South University, Changsha, China
- Changzhou Key Laboratory of Respiratory Medical Engineering, Institute of Biomedical Engineering and Health Sciences, Changzhou, China
- Longdong College, Qingyang, China
| | - Yu Chen
- School of Basic Medicine, Central South University, Changsha, China
| | - Wang Jiang
- School of Basic Medicine, Central South University, Changsha, China
| | - Wenjie Huang
- School of Basic Medicine, Central South University, Changsha, China
- Affiliated Liuzhou Maternity and Child Healthcare Hospital of Guangxi University of Science and Technology, Liuzhou, China
| | - Mingxing Ouyang
- Changzhou Key Laboratory of Respiratory Medical Engineering, Institute of Biomedical Engineering and Health Sciences, Changzhou, China
| | - Lei Liu
- Changzhou Key Laboratory of Respiratory Medical Engineering, Institute of Biomedical Engineering and Health Sciences, Changzhou, China
| | - Yan Pan
- Changzhou Key Laboratory of Respiratory Medical Engineering, Institute of Biomedical Engineering and Health Sciences, Changzhou, China
| | - Jingjing Li
- Changzhou Key Laboratory of Respiratory Medical Engineering, Institute of Biomedical Engineering and Health Sciences, Changzhou, China
| | - Xiangping Qu
- School of Basic Medicine, Central South University, Changsha, China
| | - Huijun Liu
- School of Basic Medicine, Central South University, Changsha, China
| | - Chi Liu
- School of Basic Medicine, Central South University, Changsha, China
| | - Linhong Deng
- Changzhou Key Laboratory of Respiratory Medical Engineering, Institute of Biomedical Engineering and Health Sciences, Changzhou, China
- *Correspondence: Linhong Deng, ; Xiaoqun Qin, ; Yang Xiang,
| | - Xiaoqun Qin
- School of Basic Medicine, Central South University, Changsha, China
- *Correspondence: Linhong Deng, ; Xiaoqun Qin, ; Yang Xiang,
| | - Yang Xiang
- School of Basic Medicine, Central South University, Changsha, China
- *Correspondence: Linhong Deng, ; Xiaoqun Qin, ; Yang Xiang,
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5
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Joseph C, Tatler AL. Pathobiology of Airway Remodeling in Asthma: The Emerging Role of Integrins. J Asthma Allergy 2022; 15:595-610. [PMID: 35592385 PMCID: PMC9112045 DOI: 10.2147/jaa.s267222] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 03/25/2022] [Indexed: 12/19/2022] Open
Abstract
Airway remodeling is a complex clinical feature of asthma that involves long-term disruption and modification of airway architecture, which contributes significantly to airway hyperresponsiveness (AHR) and lung function decline. It is characterized by thickening of the airway smooth muscle layer, deposition of a matrix below the airway epithelium, resulting in subepithelial fibrosis, changes within the airway epithelium, leading to disruption of the barrier, and excessive mucous production and angiogenesis within the airway wall. Airway remodeling contributes to stiffer and less compliant airways in asthma and leads to persistent, irreversible airflow obstruction. Current asthma treatments aim to reduce airway inflammation and exacerbations but none are targeted towards airway remodeling. Inhibiting the development of airway remodeling or reversing established remodeling has the potential to dramatically improve symptoms and disease burden in asthmatic patients. Integrins are a family of transmembrane heterodimeric proteins that serve as the primary receptors for extracellular matrix (ECM) components, mediating cell-cell and cell-ECM interactions to initiate intracellular signaling cascades. Cells present within the lungs, including structural and inflammatory cells, express a wide and varying range of integrin heterodimer combinations and permutations. Integrins are emerging as an important regulator of inflammation, repair, remodeling, and fibrosis in the lung, particularly in chronic lung diseases such as asthma. Here, we provide a comprehensive summary of the current state of knowledge on integrins in the asthmatic airway and how these integrins promote the remodeling process, and emphasize their potential involvement in airway disease.
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Affiliation(s)
- Chitra Joseph
- Centre for Respiratory Research, National Institute for Health Research Biomedical Research Centre, School of Medicine, University of Nottingham, Nottingham, UK
| | - Amanda L Tatler
- Centre for Respiratory Research, National Institute for Health Research Biomedical Research Centre, School of Medicine, University of Nottingham, Nottingham, UK
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6
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Jiang W, Wang JM, Luo JH, Chen Y, Pi J, Ma XD, Liu CX, Zhou Y, Qu XP, Liu C, Liu HJ, Qin XQ, Xiang Y. Airway epithelial integrin β4-deficiency exacerbates lipopolysaccharide-induced acute lung injury. J Cell Physiol 2021; 236:7711-7724. [PMID: 34018612 DOI: 10.1002/jcp.30422] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 04/29/2021] [Accepted: 05/06/2021] [Indexed: 12/17/2022]
Abstract
Airway epithelial cells, the first barrier of the respiratory tract, play an indispensable role in innate immunity. Integrin β4 (ITGB4) is a structural adhesion molecule that is involved in the pathological progression of acute inflammatory diseases and is downregulated in asthmatic patients. Research has shown that endothelial ITGB4 has proinflammatory properties in acute lung injury (ALI). However, the role of epithelial ITGB4 in a murine ALI model is still unknown. This study investigated the role of ITGB4 in lipopolysaccharide (LPS)-induced ALI. We found that ITGB4 in the airway epithelium had remarkably increased after the introduction of LPS in vivo and in vitro. Then, we constructed airway epithelial cell-specific ITGB4 knockout (ITGB4-/- ) mice to study its role in ALI. At a time point of 12 h after the tracheal injection of LPS, ITGB4-/- mice showed increased macrophages (mainly M1-type macrophages) and neutrophil infiltration into the lungs; inflammation-related proteins including interleukin (IL)-6, tumor necrosis factor, and IL-17A were significantly elevated compared to their levels in ITGB4+/+ mice. Furthermore, we investigated the role of ITGB4 in the anti-inflammatory response. Intriguingly, in the ITGB4-/- + LPS group, we found significantly reduced expression of anti-inflammatory factors, including IL-10 messenger RNA (mRNA) and ARG-1 mRNA. We also observed that monocyte chemotactic protein (MCP-1) increased significantly both in vivo and in vitro. Airway epithelium activates macrophages, most likely driven by MCP-1, which we confirmed in the coculture of epithelia and macrophages. These phenomena indicate that ITGB4 in airway epithelial cells plays an important role in the process of inflammation and activation of macrophages in ALI. Overall, these data demonstrated a novel link between airway epithelial ITGB4 and the inflammatory response in LPS-induced ALI.
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Affiliation(s)
- Wang Jiang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Jin-Mei Wang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Jin-Hua Luo
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Yu Chen
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Jiao Pi
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Xiao-Di Ma
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Cai-Xia Liu
- School of Integrated Chinese and Western Medicine, Hunan University of Traditional Chinese Medicine, Changsha, Hunan, China
| | - Yang Zhou
- Functional Experimental Center, Hunan University of Medicine, Huaihua, Hunan, China
| | - Xiang-Ping Qu
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Chi Liu
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Hui-Jun Liu
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Xiao-Qun Qin
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Yang Xiang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
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7
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Wu M, Yang Y, Yuan L, Yang M, Wang L, Du X, Qin L, Wu S, Xiang Y, Qu X, Liu H, Qin X, Liu C. DNA methylation down-regulates integrin β4 expression in asthmatic airway epithelial cells. Clin Exp Allergy 2020; 50:1127-1139. [PMID: 32618381 DOI: 10.1111/cea.13697] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 06/10/2020] [Accepted: 06/17/2020] [Indexed: 12/21/2022]
Abstract
BACKGROUND Integrin β4 (ITGB4) is a hemi-desmosome protein which is downregulated in the airway epithelial cells of asthma patients. The proximal promoters and exons of ITGB4 contain CpG islands or multiple CpG sites both in human and mice, which indicated the possible methylation regulation of ITGB4 in airway epithelial cells. OBJECTIVE We sought to unveil that DNA methylation regulates the decreased ITGB4 during the pathogenesis of asthma. METHODS Mice were exposed to house dust mite (HDM) extracts to construct an asthma model. 5-Aza-2'-deoxycytidine (5-AZA) or dexamethasone (DEX) were added in the last two weeks. Besides, the primary human bronchial epithelial (HBE) cells were incubated for the detection of ITGB4 expression and methylation status after HDM stress. Furthermore, DNA methylation of ITGB4 in peripheral blood was measured in asthma patients. Logistic regression was employed to evaluate the association between methylation sites and asthma patients' ages in the control of potential confounders. Moreover, the correlations between differentially methylated sites (DMSs) and clinical parameters in asthma patients were assessed. Finally, the ability of candidate DMSs to predict asthma was evaluated by receiver operating characteristic (ROC) analysis and principal component analysis (PCA). RESULTS We found that in HDM-stressed asthma model, DNA methylation regulated the reduced ITGB4 expression in airway epithelial cells. Moreover, alteration in the specific CpG sites (chr17:73717720 and chr17:73717636) of ITGB4 may regulate ITGB4 expression and further may be associated with the clinically phenotypic of asthma. The specific DMSs of ITGB4 in peripheral blood can distinguish asthma patients from healthy controls (HCs) effectively. CONCLUSIONS AND CLINICAL RELEVANCE This study confirmed that DNA methylation regulates the decreased expression of ITGB4 in the airway epithelial cells of asthma patients. These results supply some useful insights to the mechanism of the decreased ITGB4 in asthmatic airway epithelial and provide possible targets for early prediction and screening of asthma.
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Affiliation(s)
- Mengping Wu
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Yu Yang
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Lin Yuan
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Ming Yang
- Faculty of Health and Medicine, Centre for Asthma and Respiratory Disease, School of Biomedical Sciences and Pharmacy, University of Newcastle and Hunter Medical Research Institute, Callaghan, NSW, Australia
| | - Leyuan Wang
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Xizi Du
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Ling Qin
- Department of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Xiangya Hospital, Central South University, Changsha, China
| | - Shuangyan Wu
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Yang Xiang
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Xiangping Qu
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Huijun Liu
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Xiaoqun Qin
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Chi Liu
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China.,Research Center of China-Africa Infectious Diseases, Xiangya School of Medicine Central South University, Changsha, China
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8
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Wang ZN, Su RN, Yang BY, Yang KX, Yang LF, Yan Y, Chen ZG. Potential Role of Cellular Senescence in Asthma. Front Cell Dev Biol 2020; 8:59. [PMID: 32117985 PMCID: PMC7026390 DOI: 10.3389/fcell.2020.00059] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 01/22/2020] [Indexed: 12/18/2022] Open
Abstract
Cellular senescence is a complicated process featured by irreversible cell cycle arrest and senescence-associated secreted phenotype (SASP), resulting in accumulation of senescent cells, and low-grade inflammation. Cellular senescence not only occurs during the natural aging of normal cells, but also can be accelerated by various pathological factors. Cumulative studies have shown the role of cellular senescence in the pathogenesis of chronic lung diseases including chronic obstructive pulmonary diseases (COPD) and idiopathic pulmonary fibrosis (IPF) by promoting airway inflammation and airway remodeling. Recently, great interest has been raised in the involvement of cellular senescence in asthma. Limited but valuable data has indicated accelerating cellular senescence in asthma. This review will compile current findings regarding the underlying relationship between cellular senescence and asthma, mainly through discussing the potential mechanisms of cellular senescence in asthma, the impact of senescent cells on the pathobiology of asthma, and the efficiency and feasibility of using anti-aging therapies in asthmatic patients.
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Affiliation(s)
- Zhao-Ni Wang
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Ruo-Nan Su
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Bi-Yuan Yang
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Ke-Xin Yang
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Li-Fen Yang
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yan Yan
- Guangdong Provincial Key Laboratory of Biomedical Imaging, Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, China.,Center for Interventional Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, China
| | - Zhuang-Gui Chen
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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9
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p73 regulates epidermal wound healing and induced keratinocyte programming. PLoS One 2019; 14:e0218458. [PMID: 31216312 PMCID: PMC6583996 DOI: 10.1371/journal.pone.0218458] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 06/03/2019] [Indexed: 12/19/2022] Open
Abstract
p63 is a transcriptional regulator of ectodermal development that is required for basal cell proliferation and stem cell maintenance. p73 is a closely related p53 family member that is expressed in select p63-positive basal cells and can heterodimerize with p63. p73-/- mice lack multiciliated cells and have reduced numbers of basal epithelial cells in select tissues; however, the role of p73 in basal epithelial cells is unknown. Herein, we show that p73-deficient mice exhibit delayed wound healing despite morphologically normal-appearing skin. The delay in wound healing is accompanied by decreased proliferation and increased levels of biomarkers of the DNA damage response in basal keratinocytes at the epidermal wound edge. In wild-type mice, this same cell population exhibited increased p73 expression after wounding. Analyzing single-cell transcriptomic data, we found that p73 was expressed by epidermal and hair follicle stem cells, cell types required for wound healing. Moreover, we discovered that p73 isoforms expressed in the skin (ΔNp73) enhance p63-mediated expression of keratinocyte genes during cellular reprogramming from a mesenchymal to basal keratinocyte-like cell. We identified a set of 44 genes directly or indirectly regulated by ΔNp73 that are involved in skin development, cell junctions, cornification, proliferation, and wound healing. Our results establish a role for p73 in cutaneous wound healing through regulation of basal keratinocyte function.
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10
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Yuan L, Du X, Tang S, Wu S, Wang L, Xiang Y, Qu X, Liu H, Qin X, Liu C. ITGB4 deficiency induces senescence of airway epithelial cells through p53 activation. FEBS J 2019; 286:1191-1203. [PMID: 30636108 DOI: 10.1111/febs.14749] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 11/20/2018] [Accepted: 01/10/2019] [Indexed: 12/29/2022]
Abstract
Aging is characterized by a progressive loss of physiological integrity, leading to impaired organ function and, ultimately, increased vulnerability to death. Many complex diseases are related to aging, including asthma. In the lung, the airway epithelium serves as the first barrier to prevent the access of inspired external stimuli and dictates the initial stress responses. Notably, in the airway mucosa of asthma patients, an increase in senescent airway epithelial cells has been detected. Although it has been speculated that the senescence of airway epithelial cells could increase asthma susceptibility and aggravate asthma severity, the role of cell senescence in the development of asthma remains unclear. Integrin β4 (ITGB4) is a structural adhesion molecule with complex physiological functions that is downregulated in airway epithelial cells of asthma patients. This study demonstrates that the expression of ITGB4 in airway epithelial cells is downregulated significantly under oxidative stress or upon inflammatory stimulation. Moreover, we show that ITGB4 deficiency induces the senescence of airway epithelial cells through the activation of the p53 pathway both in vitro and in vivo. Together, our results demonstrate that airway epithelial senescence induced by ITGB4 deficiency after oxidative stress or inflammatory stimulation may be involved in the pathogenesis of asthma. Understanding the contribution of ITGB4 deficiency to the senescence of airway epithelial cells in asthma patients may provide new therapeutic approaches for the treatment of asthma.
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Affiliation(s)
- Lin Yuan
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Xizi Du
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Sha Tang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Shuangyan Wu
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Leyuan Wang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Yang Xiang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Xiangping Qu
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Huijun Liu
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Xiaoqun Qin
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Chi Liu
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, China
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11
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Li Y, Li X, Xiong L, Tang J, Li L. Comparison of phenotypes and transcriptomes of mouse skin-derived precursors and dermal mesenchymal stem cells. Differentiation 2018; 102:30-39. [PMID: 30056221 DOI: 10.1016/j.diff.2018.07.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 07/05/2018] [Accepted: 07/17/2018] [Indexed: 02/06/2023]
Abstract
Both skin-derived precursors (SKPs) and dermal mesenchymal stem cells (dMSCs) are promising candidates for cellular therapy and regenerative medicine. To date the comparison of phenotypes and transcriptomes of mouse SKPs (mSKPs) and dMSCs has never been reported. Here we characterized and compared the biological properties and transcriptomes of mSKP and dMSCs from the same mouse dermis sample. Firstly, we analyzed mSKPs and dMSCs by use of immunocytochemistry, cell cycle analysis, and CD antigen expression. Then we conducted the osteogenic, adipogenic, and chondrogenic induced differentiation for both cell types. Lastly, we compared their genomic profiles by RNA-sequencing (RNA-Seq), and verified the results of RNA-Seq by quantitative real time reverse transcription PCR (qRT-PCR). The results suggested that mSKPs and dMSCs shared similarities in certain positive stem cells markers expression, but demonstrated difference in Nanog and Oct4 expression. mSKPs and dMSCs demonstrated similar cell cycle distribution and CD antigen expression. Both types of cells could be induced differentiated into osteocytes, adipocytes, and chondrocytes. However, RNA-Seq and qRT-PCR results indicated that mSKPs and dMSCs had distinct transcriptome profiles. The majority of enriched differentially expressed genes (DEGs) from mSKPs was immune-related, while the majority of enriched DEGs from dMSCs was differentiation/development/disease-related. Transcriptome profiles suggested that mSKPs and dMSCs might have potential usage in the relevant morbidity management. These results may indicate a molecular basis for novel stem cell-based therapeutic strategies.
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Affiliation(s)
- Yiming Li
- Department of Dermatology and Venerology, Huaxi Hospital, Chengdu, Sichuan Province, PR China; Department of dermatology and venerology, the First Affiliated Hospital of Chengdu Medical College, 278 Baoguang Ave, Xindu district, Chengdu, Sichuan Province, PR China
| | - Xiaohua Li
- Department of Dermatology and Venerology, Huaxi Hospital, Chengdu, Sichuan Province, PR China
| | - Lidan Xiong
- Department of Dermatology and Venerology, Huaxi Hospital, Chengdu, Sichuan Province, PR China
| | - Jie Tang
- Department of Dermatology and Venerology, Huaxi Hospital, Chengdu, Sichuan Province, PR China
| | - Li Li
- Department of Dermatology and Venerology, Huaxi Hospital, Chengdu, Sichuan Province, PR China.
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Liu C, Yuan L, Zou Y, Yang M, Chen Y, Qu X, Liu H, Jiang J, Xiang Y, Qin X. ITGB4 is essential for containing HDM-induced airway inflammation and airway hyperresponsiveness. J Leukoc Biol 2018; 103:897-908. [PMID: 29393977 DOI: 10.1002/jlb.3a1017-411rr] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 12/19/2017] [Accepted: 12/20/2017] [Indexed: 12/17/2022] Open
Abstract
Airway epithelial cells play a significant role in the pathogenesis of asthma. Although the structural and functional defects of airway epithelial cells have been postulated to increase asthma susceptibility and exacerbate asthma severity, the mechanism and implication of these defects remain uncertain. Integrin β4 (ITGB4) is a structural adhesion molecule that is downregulated in the airway epithelium of asthma patients. In this study, we demonstrated that ITGB4 deficiency leads to severe allergy-induced airway inflammation and airway hyper-responsiveness (AHR) in mice. After house dust mite (HDM) challenge, epithelial cell-specific ITGB4-deleted mice showed increased lymphocyte, eosinophil, and neutrophil infiltration into lung compared with that of the wild-type mice. ITGB4 deficiency also resulted in increased expression of the Th2 cytokine IL-4, IL-13, and the Th17 cytokine IL-17A in the lung tissue and in the T cells after HDM challenge. The aggravated inflammation in ITGB4 defect mice was partly caused by enhanced disrupted epithelial barrier integrity after HDM stress, which induced the increased thymic stromal lymphopoietin secretion from airway epithelial cells. This study therefore demonstrates that ITGB4 plays a pivotal role in containing allergen-mediated lung inflammation and airway hyper-responsiveness in allergic asthma.
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Affiliation(s)
- Chi Liu
- Departments of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Lin Yuan
- Departments of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Yizhou Zou
- Department of Immunology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Ming Yang
- Centre for Asthma and Respiratory Disease, School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle and Hunter Medical Research Institute, Callaghan, New South Wales, Australia
| | - Yu Chen
- Department of Examination, Medical College of Hunan Normal University, Changsha, Hunan, China
| | - Xiangping Qu
- Departments of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Huijun Liu
- Departments of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Jianxin Jiang
- State Key Laboratory of Trauma, Burns, and Combined Injury, Institute of Surgery Research, Third Military Medical University, Chongqing, China
| | - Yang Xiang
- Departments of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Xiaoqun Qin
- Departments of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
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13
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Pickart L, Vasquez-Soltero JM, Margolina A. The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline. Brain Sci 2017; 7:E20. [PMID: 28212278 PMCID: PMC5332963 DOI: 10.3390/brainsci7020020] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 02/07/2017] [Accepted: 02/08/2017] [Indexed: 12/25/2022] Open
Abstract
Neurodegeneration, the progressive death of neurons, loss of brain function, and cognitive decline is an increasing problem for senior populations. Its causes are poorly understood and therapies are largely ineffective. Neurons, with high energy and oxygen requirements, are especially vulnerable to detrimental factors, including age-related dysregulation of biochemical pathways caused by altered expression of multiple genes. GHK (glycyl-l-histidyl-l-lysine) is a human copper-binding peptide with biological actions that appear to counter aging-associated diseases and conditions. GHK, which declines with age, has health promoting effects on many tissues such as chondrocytes, liver cells and human fibroblasts, improves wound healing and tissue regeneration (skin, hair follicles, stomach and intestinal linings, boney tissue), increases collagen, decorin, angiogenesis, and nerve outgrowth, possesses anti-oxidant, anti-inflammatory, anti-pain and anti-anxiety effects, increases cellular stemness and the secretion of trophic factors by mesenchymal stem cells. Studies using the Broad Institute Connectivity Map show that GHK peptide modulates expression of multiple genes, resetting pathological gene expression patterns back to health. GHK has been recommended as a treatment for metastatic cancer, Chronic Obstructive Lung Disease, inflammation, acute lung injury, activating stem cells, pain, and anxiety. Here, we present GHK's effects on gene expression relevant to the nervous system health and function.
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Affiliation(s)
- Loren Pickart
- Research & Development Department, Skin Biology, 4122 Factoria Boulevard SE Suite No. 200 Bellevue, WA 98006, USA.
| | | | - Anna Margolina
- Research & Development Department, Skin Biology, 4122 Factoria Boulevard SE Suite No. 200 Bellevue, WA 98006, USA.
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GHK-Cu may Prevent Oxidative Stress in Skin by Regulating Copper and Modifying Expression of Numerous Antioxidant Genes. COSMETICS 2015. [DOI: 10.3390/cosmetics2030236] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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15
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GHK and DNA: resetting the human genome to health. BIOMED RESEARCH INTERNATIONAL 2014; 2014:151479. [PMID: 25302294 PMCID: PMC4180391 DOI: 10.1155/2014/151479] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 08/27/2014] [Indexed: 02/07/2023]
Abstract
During human aging there is an increase in the activity of inflammatory, cancer promoting, and tissue destructive genes plus a decrease in the activity of regenerative and reparative genes. The human blood tripeptide GHK possesses many positive effects but declines with age. It improves wound healing and tissue regeneration (skin, hair follicles, stomach and intestinal linings, and boney tissue), increases collagen and glycosaminoglycans, stimulates synthesis of decorin, increases angiogenesis, and nerve outgrowth, possesses antioxidant and anti-inflammatory effects, and increases cellular stemness and the secretion of trophic factors by mesenchymal stem cells. Recently, GHK has been found to reset genes of diseased cells from patients with cancer or COPD to a more healthy state. Cancer cells reset their programmed cell death system while COPD patients' cells shut down tissue destructive genes and stimulate repair and remodeling activities. In this paper, we discuss GHK's effect on genes that suppress fibrinogen synthesis, the insulin/insulin-like system, and cancer growth plus activation of genes that increase the ubiquitin-proteasome system, DNA repair, antioxidant systems, and healing by the TGF beta superfamily. A variety of methods and dosages to effectively use GHK to reset genes to a healthier state are also discussed.
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Analysis on the relevance of asthma susceptibility with the alteration of integrin β 4 expression. PLoS One 2014; 9:e95533. [PMID: 24740264 PMCID: PMC3989341 DOI: 10.1371/journal.pone.0095533] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Accepted: 03/28/2014] [Indexed: 11/19/2022] Open
Abstract
Accumulated research has suggested the importance of the adhesion molecules modulation as therapeutic approach for bronchial asthma. Adhesion molecules expression alteration contributes to the pathogenesis of asthma. In order to probe the roles of expression imbalance of adhesion molecules in asthma pathogenesis, expression profiling of adhesion molecules was performed using cDNA microarray assay. The results showed that the expression pattern of adhesion molecules was altered in peripheral blood leucocytes of asthma patients. In this study, we focused on one of the abnormally expressed molecule, integrin β4, which was down-regulated in all asthma patients, to analyze the relevance of asthma susceptibility with the alteration of integrin β4 expressions. Real time PCR was used to verify the down-regulation of integrin β4 in additional 38 asthma patients. Next, the 5'flanking region of integrin β4 DNA were amplified, sequenced and site-directed mutagenesis technology in correspondent variation sites were carried out. Among 4 variation sites found in 5' flanking region of integrin β4, 3 were related to asthma susceptibility: -nt1029 G/A, -nt 1051 G/A, and -nt 1164 G/C. A reduction of human integrin β4 promoter activity was observed at mutants of these sites. This study demonstrates that various adhesion molecules in asthma patients are abnormally expressed. Mutations in 5' flanking region result in reduced integrin β4 expression, which is related to increased risk of asthma.
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Downregulation of integrin β4 decreases the ability of airway epithelial cells to present antigens. PLoS One 2012; 7:e32060. [PMID: 22545078 PMCID: PMC3335869 DOI: 10.1371/journal.pone.0032060] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2011] [Accepted: 01/21/2012] [Indexed: 01/22/2023] Open
Abstract
Airway epithelial cells have been demonstrated to be accessory antigen presentation cells (APC) capable of activating T cells and may play an important role in the development of allergic airway inflammation of asthma. In asthmatic airways, loss of expression of the adhesion molecule integrin β4 (ITGB4) and an increase in Th2 inflammation bias has been observed in our previous study. Given that ITGB4 is engaged in multiple signaling pathways, we studied whether disruption of ITGB4-mediated cell adhesion may contribute to the adaptive immune response of epithelial cells, including their ability to present antigens, induce the activate and differentiate of T cells. We silenced ITGB4 expression in bronchial epithelial cells with an effective siRNA vector and studied the effects of ITGB4 silencing on the antigen presentation ability of airway epithelial cells. T cell proliferation and cytokine production was investigated after co-culturing with ITGB4-silenced epithelial cells. Surface expression of B7 homologs and the major histocompatibility complex (MHC) class II was also detected after ITGB4 was silenced. Our results demonstrated that silencing of ITGB4 resulted in impaired antigen presentation processes and suppressed T cell proliferation. Meanwhile, decrease in Th1 cytokine production and increase in Th17 cytokine production was induced after co-culturing with ITGB4-silenced epithelial cells. Moreover, HLA-DR was decreased and the B7 homologs expression was different after ITGB4 silencing. Overall, this study suggested that downregulation of ITGB4 expression in airway epithelial cells could impair the antigen presentation ability of these cells, which further regulate airway inflammation reaction in allergic asthma.
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