Azithromycin inhibits proliferation of rat airway smooth muscle cells though TRAF6/NF-κB/VEGF signaling pathway
10.3969/j.issn.1671-8348.2017.21.006
- VernacularTitle:阿奇霉素通过TRAF6/NF-κB/VEGF信号通路抑制哮喘大鼠气道平滑肌细胞增殖
- Author:
Xiaoli LI
;
Wei WANG
;
Jiyuan GUO
;
Shengxiang GUO
- Keywords:
azithromycin;
asthma;
airway smooth muscle cell;
TRAF6;
NF-κB;
vascular endothelial growth factor
- From:
Chongqing Medicine
2017;46(21):2898-2901
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the mechanism of azithromycin (AZM) for inhibiting the proliferation of rat airway smooth muscle cells (ASMCs).Methods Thirty Sprague-Dawley (SD) rats were divided into the control group,asthma model group and AZM group.The rat model of asthma was established by ovalbumin (OVA) sensitization and stimulation in vitro.The airway related parameters of rat lung tissue were determined by using the medical image analysis system.Primary passage ASMCs were isolated and cultured using the tissue-sticking method,and the vascular endothelial growth factor (VEGF) overexpression vector or tumor necrosis factor receptor-associated factor 6 (TRAF6) overexpression vector was transfected into ASMCs in the AZM group.The protein levels of VEGF,NF-κB p65 and TRAF6 were detected by Western blotting,and the proliferation of ASMCs was evaluated by CCK-8 kit.Results AZM significantly inhibited the increase of thickness of total airway wall,thickness of inner airway wall and thickness of airway smooth muscle layer in asthma rats (P<0.05),also significantly inhibited the proliferation of ASMCs in the asthma model group (P<0.05).AZM significantly inhibited the protein expression of VEGF and NF-κB p65 induced by asthma (P<0.05),and the overexpression of VEGF significantly reduced the inhibiting effects of AZM on proliferation of ASMCs (P<0.05).AZM significantly inhibited the high expression of TRAF6 induced by asthma (P<0.05),and the overexpression of TRAF6 significantly reduced the inhibiting effects of AZM on expression of VEGF and NF-κB p65 as well as proliferation of ASMCs (P<0.05).Conclusion AZM can suppress the proliferation of ASMCs,its partial mechanism may be realized through inhibiting TRAF6/NF-κB/VEGF signaling pathway.
