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The proto-oncogene tyrosine protein kinase Src is essential for macrophage-myofibroblast transition during renal scarring.

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机构: [1]Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Hong Kong SAR, China [2]Li Ka Shing Institute of Health Sciences, and Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China [3]Clinical Translational Research Center, Shanghai Pulmonary Hospital, and Department of Histology and Embryology, Tongji University School of Medicine, Tongji University Cancer Institute, Shanghai, China [4]Department of Head and Neck Oncology, West China Hospital of Stomatology, State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, China [5]Department of Surgery, The Chinese University of Hong Kong, Hong Kong SAR, China [6]Reproduction, Development and Endocrinology Program, School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
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关键词: macrophage-myofibroblast transition (MMT) single-cell RNA sequencing Src

摘要:
Src activation has been associated with fibrogenesis after kidney injury. Macrophage-myofibroblast transition is a newly identified process to generate collagen-producing myofibroblasts locally in the kidney undergoing fibrosis in a TGF-β/Smad3-dependent manner. The potential role of the macrophage-myofibroblast transition in Src-mediated renal fibrosis is unknown. In studying this by RNA sequencing at single-cell resolution, we uncovered a unique Src-centric regulatory gene network as a key underlying mechanism of macrophage-myofibroblast transition. A total of 501 differentially expressed genes associated with macrophage-myofibroblast transition were identified. However, Smad3-knockout largely reduced the transcriptome diversity. More importantly, inhibition of Src largely suppresses ureteral obstruction-induced macrophage-myofibroblast transition in the injured kidney in vivo along with transforming growth factor-β1-induced elongated fibroblast-like morphology, α-smooth muscle actin expression and collagen production in bone marrow derived macrophages in vitro. Unexpectedly, we further uncovered that Src serves as a direct Smad3 target gene and also specifically up-regulated in macrophages during macrophage-myofibroblast transition. Thus, macrophage-myofibroblast transition contributes to Src-mediated tissue fibrosis. Hence, targeting Src may represent as a precision therapeutic strategy for macrophage-myofibroblast transition-driven fibrotic diseases. Copyright © 2017 International Society of Nephrology. Published by Elsevier Inc. All rights reserved.

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出版当年[2018]版:
大类 | 1 区 医学
小类 | 1 区 泌尿学与肾脏学
最新[2023]版:
大类 | 1 区 医学
小类 | 1 区 泌尿学与肾脏学
第一作者:
第一作者机构: [1]Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Hong Kong SAR, China [2]Li Ka Shing Institute of Health Sciences, and Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
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通讯机构: [2]Li Ka Shing Institute of Health Sciences, and Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China [*1]Li Ka Shing Institute of Health Sciences, and Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China.
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