FIZZ1 Plays a Crucial Role in Early Stage Airway Remodeling of OVA-Induced Asthma |
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| Authors: | Liang Dong Shu-Juan Wang Blanca Camoretti-Mercado Hong-Jia Li Ming Chen Wen-Xiang Bi |
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| Affiliation: | 1. Department of Pulmonary Diseases, Qilu Hospital of Shandong University, Jinan, Shandong, China;2. Pulmonary, Department of Medicine, The University of Chicago, ChicagoUSA;3. Department of Biochemistry, School of Medicine, Shandong University, Jinan, Shandong, China |
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| Abstract: | The aim of this study was to elucidate the role of Found in Inflammatory Zone 1 (FIZZ1, also known as RELM-α or resistin-like molecule-α) in airway remodeling in asthma. We used a rat model of ovalbumin (OVA) sensitization and challenge to induce lung inflammation and remodeling. Expression of α -SMA in the lungs of OVA-treated rats was significantly elevated in the peribronchial regions compared with control saline-treated animals. Expression of FIZZ1 mRNA in alveolar epithelial type II cells (AECII) isolated from OVA-treated animals was higher than in control animals. Forced expression of recombinant FIZZ1 in rat-1 lung fibroblast cell line enhanced production of collagen type I and α -SMA compared with control transfected cells. These results suggest that FIZZ1 can induce fibroblasts to express markers of myofibroblast differentiation such as α -SMA and collagen type I, which are characteristic of early stages of airway remodeling seen in asthma. |
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| Keywords: | FIZZ1 found in inflammatory zone 1 asthma α-smooth muscle actin type I collagen airway remodeling |
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