Influenza virus specific CD8⁺ T cells exacerbate infection following high dose influenza challenge of aged mice.

Influenza virus specific CD8⁺ T cells exacerbate infection following high dose influenza challenge of aged mice.
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DOI:
10.1155/2013/876314
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发表时间:
2013
影响因子:
--
通讯作者:
Ertl HC
Ertl HC
中科院分区:
生物学3区
文献类型:
--
作者:
Parzych EM;DiMenna LJ;Latimer BP;Small JC;Kannan S;Manson B;Lasaro MO;Wherry EJ;Ertl HC

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流感病毒主要在老年人中引起严重疾病和死亡。许可疫苗通过亚型特异性中和抗体提供的保护是不完全的,特别是当疫苗抗原不能与流行病毒株的抗原紧密匹配时。正在努力产生所谓的通用流感疫苗,其表达通过诱导CD8+ T细胞诱导对多种流感病毒株的广泛保护的保守病毒序列。在这里,我们评估了有效的抗病毒CD8+ T细胞应答对年轻和老年小鼠流感病毒感染的影响。我们的研究结果表明,CD8+ T细胞诱导疫苗可以为年轻小鼠提供一定的保护,但它们会加剧老年小鼠的流感病毒相关疾病,导致广泛的肺部病变和死亡。
Influenza viruses cause severe illnesses and death, mainly in the aged population. Protection afforded by licensed vaccines through subtype-specific neutralizing antibodies is incomplete, especially when the vaccine antigens fail to closely match those of the circulating viral strains. Efforts are underway to generate a so-called universal influenza vaccine expressing conserved viral sequences that induce broad protection to multiple strains of influenza virus through the induction of CD8+ T cells. Here we assess the effect of a potent antiviral CD8+ T cell response on influenza virus infection of young and aged mice. Our results show that CD8+ T cell-inducing vaccines can provide some protection to young mice, but they exacerbate influenza virus-associated disease in aged mice, causing extensive lung pathology and death.
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发表时间: 2011-01-17
期刊: The Journal of experimental medicine
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