Human Metapneumovirus Induces Mucin 19 Which Contributes to Viral Pathogenesis.

Human Metapneumovirus Induces Mucin 19 Which Contributes to Viral Pathogenesis.
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DOI:
10.3390/pathogens9090726
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发表时间:
2020-09-03
期刊:
Pathogens (Basel, Switzerland)
影响因子:
--
通讯作者:
Guerrero-Plata A
Guerrero-Plata A
中科院分区:
其他
文献类型:
--
作者:
McBride K;Banos-Lara MDR;Cheemarla NR;Guerrero-Plata A

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人偏肺病毒(HMPV)仍然是引起急性呼吸道感染的最常见病毒感染之一,尤其是在幼儿、老年人和免疫功能低下人群中。临床症状可从轻微的呼吸道症状到严重的细支气管炎和肺炎。粘液的产生是HMPV感染过程中的常见特征,但其对HMPV诱导的发病机制和免疫应答的贡献在很大程度上是未知的。粘蛋白是粘液的主要成分,它们可能会影响宿主对感染的反应。使用体外系统和小鼠感染模型,我们确定粘蛋白19主要在HMPV感染后的呼吸道中表达。此外,Muc19的缺乏导致疾病改善,肺部病毒滴度降低和CD4+ T细胞数量减少。这些数据表明,粘蛋白19有助于激活对HMPV的免疫应答和HMPV诱导的发病机制。
Human Metapneumovirus (HMPV) remains one of the most common viral infections causing acute respiratory tract infections, especially in young children, elderly, and immunocompromised populations. Clinical symptoms can range from mild respiratory symptoms to severe bronchiolitis and pneumonia. The production of mucus is a common feature during HMPV infection, but its contribution to HMPV-induced pathogenesis and immune response is largely unknown. Mucins are a major component of mucus and they could have an impact on how the host responds to infections. Using an in vitro system and a mouse model of infection, we identified that Mucin 19 is predominantly expressed in the respiratory tract upon HMPV infection. Moreover, the lack of Muc19 led to an improved disease, lower lung viral titers and a decrease in the number of CD4+ T cells. These data indicate that mucin 19 contributes to the activation of the immune response to HMPV and to HMPV-induced pathogenesis.
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