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Huang DY, Wang GM, Ke ZR, Zhou Y, Yang HH, Ma TL, Guan CX. Megakaryocytes in pulmonary diseases. Life Sci 2022; 301:120602. [DOI: 10.1016/j.lfs.2022.120602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 04/25/2022] [Accepted: 04/27/2022] [Indexed: 02/06/2023]
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Zhou Y, Zhang B, Li C, Huang X, Cheng H, Bao X, Zhao F, Cheng Q, Yue S, Han J, Luo Z. Megakaryocytes participate in the occurrence of bleomycin-induced pulmonary fibrosis. Cell Death Dis 2019; 10:648. [PMID: 31501415 PMCID: PMC6733875 DOI: 10.1038/s41419-019-1903-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 08/02/2019] [Accepted: 08/11/2019] [Indexed: 12/12/2022]
Abstract
Pulmonary fibrosis is characterized by the remodeling of fibrotic tissue and collagen deposition, which mainly results from aberrant fibroblasts proliferation and trans-differentiation to myofibroblasts. Patients with chronic myelogenous leukemia, myeloproliferative disorder, and scleroderma with pulmonary fibrosis complications show megakaryocyte infiltration in the lung. In this study, we demonstrated that the number of CD41+ megakaryocytes increased in bleomycin (BLM)-induced lung fibrosis tissues through the Chemokine (CXCmotif) ligand 12/Chemokine receptor 4 (CXCL12/CXCR4) axis. Pharmacological inhibition of the CXCL12/CXCR4 axis with WZ811 prevented migration of CD41+ megakaryocytes induced by BLM-injured lung tissue ex vivo and in vivo. In addition, WZ811 significantly attenuated lung fibrosis after BLM challenge. Moreover, megakaryocytes directly promoted fibroblast proliferation and trans-differentiation to myofibroblasts. We conclude that thrombopoietin (TPO) activated megakaryocytes through transforming growth factor β (TGF-β) pathway to promote fibroblast proliferation and trans-differentiation to myofibroblasts, which is abolished by treatment with selective TGF-βR-1/ALK5 inhibitors. Therefore, CD41+ megakaryocytes migrate to injured lung tissue partially through the CXCL12/CXCR4 axis to promote the proliferation and trans-differentiation of fibroblasts through direct contact and the TGF-β1 pathway.
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Affiliation(s)
- Yan Zhou
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Bo Zhang
- Department of Urology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Chen Li
- Department of Physiology, Changzhi medical college, Changzhi, Shanxi, China
| | - XiaoTing Huang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - HaiPeng Cheng
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - XingWen Bao
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - FeiYan Zhao
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - QingMei Cheng
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - ShaoJie Yue
- Department of Pediatrics, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - JianZhong Han
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China.
| | - ZiQiang Luo
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China.
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