PM2.5 Induced the Expression of Fibrogenic Mediators via HMGB1-RAGE Signaling in Human Airway Epithelial Cells

被引：19
作者：
Zou, Weifeng [1 ]
He, Fang [2 ]
Liu, Sha [3 ]
Pu, Jinding [3 ]
Hu, Jinxing [1 ]
Sheng, Qing [1 ]
Zhu, Tao [1 ]
Zhu, Tianhua [4 ]
Li, Bing [2 ]
Ran, Pixin [3 ]
机构：
[1] Guangzhou Chest Hosp, State Key Lab Resp Dis, Guangzhou, Guangdong, Peoples R China
[2] Guangzhou Med Univ, Res Ctr Expt Med, Guangzhou, Guangdong, Peoples R China
[3] Guangzhou Med Univ, Affiliated Hosp 1, Guangzhou Inst Resp Dis, State Key Lab Resp Dis, Guangzhou, Guangdong, Peoples R China
[4] Guangzhou Med Univ, Affiliated Hosp 3, Guangzhou, Guangdong, Peoples R China
来源：
CANADIAN RESPIRATORY JOURNAL | 2018年 / 2018卷
基金：
中国国家自然科学基金;
关键词：
GLYCATION END-PRODUCTS; GROUP BOX 1; PARTICULATE MATTER; POLLUTION; RECEPTOR; EXPOSURE; BINDING; MODEL;
D O I：
10.1155/2018/1817398
中图分类号：
R56 [呼吸系及胸部疾病];
学科分类号：
摘要：
Background. The aim of the present study was to test whether fine particulate matter (PM2.5) induces the expression of platelet-derived growth factor-AB (PDGF-AB), PDGF-BB, and transforming growth factor-beta 1 (TGF-beta 1) in human bronchial epithelial cells (HBECs) in vitro via high-mobility group box 1 (HMGB1) receptor for advanced glycation end products (RAGE) signaling. Methods. Sprague-Dawley rats were exposed to motor vehicle exhaust (MVE) or clean air. HBECs were either transfected with a small interfering RNA (siRNA) targeting HMGB1 or incubated with anti-RAGE antibodies and subsequently stimulated with PM2.5. Results. The expression of HMGB1 and RAGE was elevated in MVE-treated rats compared with untreated rats, and PM2.5 increased the secretion of HMGB1 and upregulated RAGE expression and the translocation of nuclear factor kappa B (NF-kappa B) into the nucleus of HBECs. This activation was accompanied by an increase in the expression of PDGF-AB, PDGF-BB, and TGF-beta 1. The HMGB1 siRNA prevented these effects. Anti-RAGE antibodies attenuated the activation of NF-kappa B and decreased the secretion of TGF-beta 1, PDGF-AB, and PDGF-BB from HBECs. Conclusion. PM2.5 induces the expression of TGF-beta 1, PDGF-AB, and PDGF-BB in vitro via HMGB1-RAGE signaling, suggesting that this pathway may contribute to the airway remodeling observed in patients with COPD.
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页数：10
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