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Tabeling C, González Calera CR, Lienau J, Höppner J, Tschernig T, Kershaw O, Gutbier B, Naujoks J, Herbert J, Opitz B, Gruber AD, Hocher B, Suttorp N, Heidecke H, Burmester GR, Riemekasten G, Siegert E, Kuebler WM, Witzenrath M. Endothelin B Receptor Immunodynamics in Pulmonary Arterial Hypertension. Front Immunol 2022; 13:895501. [PMID: 35757687 PMCID: PMC9221837 DOI: 10.3389/fimmu.2022.895501] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 05/09/2022] [Indexed: 01/08/2023] Open
Abstract
Introduction Inflammation is a major pathological feature of pulmonary arterial hypertension (PAH), particularly in the context of inflammatory conditions such as systemic sclerosis (SSc). The endothelin system and anti-endothelin A receptor (ETA) autoantibodies have been implicated in the pathogenesis of PAH, and endothelin receptor antagonists are routinely used treatments for PAH. However, immunological functions of the endothelin B receptor (ETB) remain obscure. Methods Serum levels of anti-ETB receptor autoantibodies were quantified in healthy donors and SSc patients with or without PAH. Age-dependent effects of overexpression of prepro-endothelin-1 or ETB deficiency on pulmonary inflammation and the cardiovascular system were studied in mice. Rescued ETB-deficient mice (ETB-/-) were used to prevent congenital Hirschsprung disease. The effects of pulmonary T-helper type 2 (Th2) inflammation on PAH-associated pathologies were analyzed in ETB-/- mice. Pulmonary vascular hemodynamics were investigated in isolated perfused mouse lungs. Hearts were assessed for right ventricular hypertrophy. Pulmonary inflammation and collagen deposition were assessed via lung microscopy and bronchoalveolar lavage fluid analyses. Results Anti-ETB autoantibody levels were elevated in patients with PAH secondary to SSc. Both overexpression of prepro-endothelin-1 and rescued ETB deficiency led to pulmonary hypertension, pulmonary vascular hyperresponsiveness, and right ventricular hypertrophy with accompanying lymphocytic alveolitis. Marked perivascular lymphocytic infiltrates were exclusively found in ETB-/- mice. Following induction of pulmonary Th2 inflammation, PAH-associated pathologies and perivascular collagen deposition were aggravated in ETB-/- mice. Conclusion This study provides evidence for an anti-inflammatory role of ETB. ETB seems to have protective effects on Th2-evoked pathologies of the cardiovascular system. Anti-ETB autoantibodies may modulate ETB-mediated immune homeostasis.
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Affiliation(s)
- Christoph Tabeling
- Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Carla R González Calera
- Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Jasmin Lienau
- Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Jakob Höppner
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Thomas Tschernig
- Institute of Anatomy and Cell Biology, University of Saarland, Homburg, Germany
| | - Olivia Kershaw
- Department of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Birgitt Gutbier
- Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Jan Naujoks
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Julia Herbert
- Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Bastian Opitz
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Achim D Gruber
- Department of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Berthold Hocher
- Fifth Department of Medicine (Nephrology/Endocrinology/Rheumatology), University of Heidelberg, University Medical Centre Mannheim, Heidelberg, Germany.,Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University, Changsha, China.,Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
| | - Norbert Suttorp
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,German Center for Lung Research (DZL), Partner Site Charité, Berlin, Germany
| | | | - Gerd-R Burmester
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | | | - Elise Siegert
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany.,Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Wolfgang M Kuebler
- German Center for Lung Research (DZL), Partner Site Charité, Berlin, Germany.,Institute of Physiology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,German Center for Cardiovascular Research (DZHK), Partner Site, Berlin, Germany.,St. Michael's Hospital, Keenan Research Centre for Biomedical Science, Toronto, ON, Canada.,Departments of Physiology and Surgery, University of Toronto, Toronto, ON, Canada
| | - Martin Witzenrath
- Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,German Center for Lung Research (DZL), Partner Site Charité, Berlin, Germany
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Zeng X, Zhu L, Xiao R, Liu B, Sun M, Liu F, Hao Q, Lu Y, Zhang J, Li J, Wang T, Wei X, Hu Q. Hypoxia-Induced Mitogenic Factor Acts as a Nonclassical Ligand of Calcium-Sensing Receptor, Therapeutically Exploitable for Intermittent Hypoxia-Induced Pulmonary Hypertension. Hypertension 2017; 69:844-854. [PMID: 28348014 DOI: 10.1161/hypertensionaha.116.08743] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 12/03/2016] [Accepted: 02/26/2017] [Indexed: 11/16/2022]
Abstract
Hypoxia-induced mitogenic factor (HIMF) is an inflammatory cytokine playing important role(s) in the development of hypoxic pulmonary hypertension. The molecular target mediating HIMF-stimulated downstream events remains unclear. The coimmunoprecipitation screen identified extracellular calcium-sensing receptor (CaSR) as the binding partner for HIMF in pulmonary artery smooth muscle cells. The yeast 2-hybrid assay then revealed the binding of HIMF to the intracellular, not the extracellular, domain of extracellular CaSR. The binding of HIMF enhanced the activity of extracellular CaSR and mediated hypoxia-evoked proliferation of pulmonary artery smooth cells and the development of pulmonary vascular remodeling and pulmonary hypertension, all of which was specifically attenuated by a synthesized membrane-permeable peptide flanking the core amino acids of the intracellular binding domain of extracellular CaSR. Thus, HIMF induces pulmonary hypertension as a nonclassical ligand of extracellular CaSR, and the binding motif of extracellular CaSR can be therapeutically exploitable.
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Affiliation(s)
- Xianqin Zeng
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Liping Zhu
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Rui Xiao
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Bingxun Liu
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Mengxiang Sun
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Fangbo Liu
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Qiang Hao
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Yankai Lu
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Jiwei Zhang
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Jiansha Li
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Tao Wang
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Xiang Wei
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Qinghua Hu
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
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