CXCL13在过敏性气道炎症中的作用:新治疗靶点
2011/11/22
摘要
背景:B细胞在过敏性哮喘中起到了重要作用,然而我们对过敏性哮喘中气道B细胞活化的机制仍知之甚少。
方法:采用小鼠OVA诱导的过敏性炎症模型研究CXCL13在过敏性哮喘中的作用。检测哮喘患者和正常个体支气管肺泡灌洗液的CXCL13水平。
结果:结果显示,OVA处理的小鼠CXCL13/ CXCR5轴上调,这与气道的一些改变相关,这些改变包括B细胞和CD4+细胞在气道内募集、支气管相关淋巴组织(BALT)和气道炎症的形成。OVA致敏小鼠经CXCL13抗体处理后,不论是细胞募集,还是BALT和气道炎症的形成,都受到了抑制。有意思的是, ELISA显示,与正常个体相比,CXCL13在哮喘患者BALF中显著增加 [平均162 pg/ml 120 - 296 pg/ml) vs. 31 pg/ml (120 - 156 pg/ml);P=0.005]。
结论:研究结果显示,CXCL13参与了过敏性气道炎症的形式,该细胞因子可能成为新哮喘治疗方法的靶点。
(苏楠 审校)
Chest. 2011 Oct 20. [Epub ahead of print]
Role of CXCL13 in Allergic Airway Inflammation: Novel Therapeutic Target.
Baay-Guzman GJ, Huerta-Yepez S, Vega MI, Aguilar-Leon D, Campillos M, Blake J, Benes V, Hernandez-Pando R, Teran LM.
Source
1 Unidad de Investigacion en Enfermedades Oncologicas. Hospital Infantil de Mexico, Federico Gomez, Mexico City.
Abstract
BACKGROUND: B cells play an important role in allergic asthma. However, the mechanisms by which these cells are activated in the airways remain poorly understood.
METHODS: we have used a mouse model of OVA-induced allergic inflammation to study CXCL13 and investigate concentration of this chemokine in the bronchoalveolar lavage (BAL) fluid derived from asthmatic- and normal control subjects.
RESULTS: here we have shown that OVA-challenged mice upregulate the CXCL13/CXCR5 axis which is associated with several changes in their airways including recruitment of B- and CD4(+)cells, development of bronchial associated lymphoid tissue (BALT) and airway inflammation. Treating sensitized mice with an anti-CXCL13 antibody reduced cell recruitment, BALT formation and airways inflammation. Interestingly, measurements of CXCL13 using ELISA showed that levels of this cytokine were significantly elevated in BALF from asthmatics compared with normals (median, 162 pg/ml; range; 120 - 296 pg/ml versus median, 31 pg/ml; range120 - 156 pg/ml p=0.005).
CONCLUSION:These findings all together suggest that CXCL13 is involved in the allergic airway inflammatory process and targeting this chemokine may constitute a novel approach in asthma
Chest. 2011 Oct 20. [Epub ahead of print]
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