Role of aquaporin 5 in antigen-induced airway inflammation and mucous hyperproduction in mice.

Role of aquaporin 5 in antigen-induced airway inflammation and mucous hyperproduction in mice.
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水通道蛋白 5 在抗原诱导的小鼠气道炎症和粘液过度生成中的作用。

DOI:
10.1111/j.1582-4934.2010.01103.x
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发表时间:
2011-06
影响因子:
5.3
通讯作者:
Bai C
Bai C
中科院分区:
医学2区
文献类型:
--
作者:
Shen Y;Wang Y;Chen Z;Wang D;Wang X;Jin M;Bai C

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呼吸道炎症和粘液高分泌在哮喘的发展中起着核心作用,尽管其机制尚不清楚。水通道蛋白(AQP)-5可能参与了这一过程,因为它对从呼吸道分泌的液体的体积有贡献。本研究首次发现AQP5在哮喘患者的呼吸道上皮和粘膜下腺中过表达。此外,我们的目的是评估AQP5在对屋尘螨(HDM)的慢性过敏反应中的呼吸道炎症和粘液高分泌中的作用。检测AQP5野生型和AQP5基因敲除(KO)小鼠肺泡灌洗液中IL-2、IL-4、IL-10、干扰素-γ和粘蛋白5AC(MUC5AC)水平以及支气管和血管周围细胞数。我们发现HDM可引起C57BL/6小鼠的呼吸道炎症、肺Th2细胞聚集和粘蛋白高分泌,而不是AQP5 KO小鼠。AQP5KO小鼠肺组织中MUC5AC和MUC5B蛋白和基因的表达显著降低。因此,我们的结果表明,AQP5参与了慢性哮喘期间呼吸道炎症和粘液过度产生的发展。
Airway inflammation and mucus hyperproduction play the central role in the development of asthma, although the mechanisms remain unclear. The aquaporin (AQP)-5 may be involved in the process due to its contribution to the volume of liquid secreted from the airways. The present study firstly found the overexpression of AQP5 in the airway epithelium and submucosal glands of asthmatics. Furthermore, we aimed at evaluating the role of AQP5 in airway inflammation and mucous hyperproductions during chronic allergic responses to house dust mite (HDM). Bronchoalveolar lavage levels of interleukin (IL)-2, IL-4, IL-10, interferon-γ and Mucin 5AC (MUC5AC), and number of peribronchial and perivascular cells were measured in AQP5 wild-type and AQP5 knockout (KO) mice. We found that HDM induced airway inflammation, lung Th2 cell accumulation and mucin hypersecretion in C57BL/6 mice rather than AQP5 KO mice. Expression of MUC5AC and MUC5B proteins and genes in the lung tissue was significantly lower in AQP5 KO mice. Thus, our results implicate involvement of AQP5 in the development of airway inflammation and mucous hyperproduction during chronic asthma.
DOI: 10.1006/exer.1999.0814
发表时间: 2000-05-01
影响因子: 3.4
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