Journal
MOLECULAR THERAPY
Volume 24, Issue 10, Pages 1734-1744Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/mt.2016.109
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Funding
- Chinese National Key Basic Research and Development Program [2010CB529705]
- National Natural Science Foundation of China [81100044]
- Natural Science Foundation of Ningxia [NZ14056]
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Idiopathic pulmonary fibrosis (IPF) is a lethal human disease with short survival time and few treatment options. Herein, we demonstrated that discoidin domain receptor 2 (DDR2), a receptor tyrosine kinase that predominantly transduces signals from fibrillar collagens, plays a critical role in the induction of fibrosis and angiogenesis in the lung. In vitro cell studies showed that DDR2 can synergize the actions of both transforming growth factor (TGF)-beta and fibrillar collagen to stimulate lung fibroblasts to undergo myofibroblastic changes and vascular endothelial growth factor (VEGF) expression. In addition, we confirmed that late treatment of the injured mice with specific siRNA against DDR2 or its kinase inhibitor exhibited therapeutic efficacy against lung fibrosis. Thus, this study not only elucidated novel mechanisms by which DDR2 controls the development of pulmonary fibrosis, but also provided candidate target for the intervention of this stubborn disease.
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