Department of Microbiology, The Chinese University of Hong Kong, New Territories, Hong Kong Special Administration Region, People's Republic of China.
Virol J. 2010 Nov 26;7:344. doi: 10.1186/1743-422X-7-344.
Influenza pandemic remains a serious threat to human health. In this study, the repertoire of host cellular cytokine and chemokine responses to infections with highly pathogenic avian influenza H5N1, low pathogenicity avian influenza H9N2 and seasonal human influenza H1N1 were compared using an in vitro system based on human pulmonary epithelial cells. The results showed that H5N1 was more potent than H9N2 and H1N1 in inducing CXCL-10/IP-10, TNF-alpha and CCL-5/RANTES. The cytokine/chemokine profiles for H9N2, in general, resembled those of H1N1. Of interest, only H1N1, but none of the avian subtypes examined could induce a persistent elevation of the immune-regulatory cytokine - TGF-β2. The differential expression of cytokines/chemokines following infection with different influenza viruses could be a key determinant for clinical outcome. The potential of using these cytokines/chemokines as prognostic markers or targets of therapy is worth exploring.
流感大流行仍然是对人类健康的严重威胁。在这项研究中,使用基于人肺上皮细胞的体外系统比较了高致病性禽流感 H5N1、低致病性禽流感 H9N2 和季节性人流感 H1N1 感染宿主细胞细胞因子和趋化因子反应的谱。结果表明,H5N1 比 H9N2 和 H1N1 更能诱导 CXCL-10/IP-10、TNF-α和 CCL-5/RANTES。H9N2 的细胞因子/趋化因子谱总体上与 H1N1 相似。有趣的是,只有 H1N1,而不是所检查的任何一种禽流感亚型,都能诱导免疫调节细胞因子-TGF-β2 的持续升高。感染不同流感病毒后细胞因子/趋化因子的差异表达可能是临床结果的关键决定因素。这些细胞因子/趋化因子作为预后标志物或治疗靶点的潜力值得探索。