Recombinant IGFBP-3 inhibits allergic lung inflammation, VEGF production, and vascular leak in a mouse model of asthma

Allergy
S R KimY C Lee

Abstract

Vascular endothelial growth factor (VEGF) plays a pro-inflammatory mediator as well as a vascular permeability factor in bronchial asthma. Insulin-like growth factor (IGF)-I is also involved in the inflammatory process associated with bronchial asthma and stimulates VEGF expression. The IGF-binding proteins (IGFBPs), especially IGFBP-3, display distinctive properties and can interfere with various biological processes. In this study, an ovalbumin (OVA)-induced murine model of allergic airway disease was used to investigate which mechanism is implicated in the preventive and therapeutic actions of IGFBP-3 administered exogenously on allergen-induced bronchial inflammation and airway hyper-responsiveness, in particular focusing on the regulation of VEGF expression. Administration of recombinant human IGFBP-3 to OVA-inhaled mice substantially attenuated the increases in hypoxia-inducible factor (HIF)-α activity, IGF-I production, and VEGF protein levels in the lung. In addition, the blockade of IGF-I action decreased the OVA-induced VEGF expression, airway inflammation, and bronchial hyper-responsiveness. The administration of recombinant human IGFBP-3 or CBO-P11 also reduced significantly increases in inflammatory cells, airway h...Continue Reading

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Oct 19, 2012·Current Allergy and Asthma Reports·Norbert Meyer, Cezmi A Akdis
Oct 25, 2013·Population Health Management·Bruce G Bender
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Nov 5, 2020·Journal of Cellular and Molecular Medicine·Dan FuHuafeng Feng

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