CD8+ T cells control Ross River virus infection in musculoskeletal tissues of infected mice.

CD8+ T cells control Ross River virus infection in musculoskeletal tissues of infected mice.
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DOI:
10.4049/jimmunol.1401833
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发表时间:
2015-01-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Morrison TE
Morrison TE
中科院分区:
其他
文献类型:
--
作者:
Burrack KS;Montgomery SA;Homann D;Morrison TE

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罗斯河病毒(RRV),基孔肯雅病毒(CHIKV)和相关的甲病毒引起使人衰弱的多关节痛和肌痛。RRV和CHIKV的小鼠模型已经证明了适应性免疫应答在控制这些感染中的作用。然而,关于T细胞在病毒控制中的作用仍然存在问题,包括CD 8 + T细胞应答的大小,位置和动力学。为了解决这些问题,我们产生了表达源自淋巴细胞性脉络丛脑膜炎病毒(LCMV)的糖蛋白(gp)的H-2b限制性gp 33决定簇的重组RRV(“RRV-LCMV”)。利用四聚体,我们在RRV-LCMV感染期间追踪了gp 33特异性CD 8 + T细胞。我们发现,急性RRV感染诱导淋巴和肌肉骨骼组织中的CD 8 + T细胞应答的激活,在接种后10至14天(dpi)达到峰值,这表明CD 8 + T细胞有助于控制急性RRV感染。在14 dpi时,CD 8 + T细胞遗传缺陷的小鼠或CD 8 + T细胞耗尽的野生型小鼠在骨骼肌组织中具有升高的RRV负荷,但在关节相关组织中没有,这表明CD 8 + T细胞控制RRV感染的能力是组织依赖性的。最后,过继转移的T细胞能够减少Rag 1 −/−小鼠骨骼肌组织中的RRV负荷,表明在缺乏B细胞和抗体的情况下,T细胞可以有助于控制RRV感染。总的来说,这些数据证明了T细胞在控制RRV感染中的作用,并表明T细胞的抗病毒能力是以组织特异性方式控制的。
Ross River virus (RRV), chikungunya virus (CHIKV), and related alphaviruses cause debilitating polyarthralgia and myalgia. Mouse models of RRV and CHIKV have demonstrated a role for the adaptive immune response in the control of these infections. However, questions remain regarding the role for T cells in viral control, including the magnitude, location, and dynamics of CD8+ T cell responses. To address these questions, we generated a recombinant RRV expressing the H-2b-restricted gp33 determinant derived from the glycoprotein (gp) of lymphocytic choriomeningitis virus (LCMV) (“RRV-LCMV”). Utilizing tetramers, we tracked gp33-specific CD8+ T cells during RRV-LCMV infection. We found that acute RRV infection induces activation of CD8+ T cell responses in lymphoid and musculoskeletal tissues that peak from 10 to 14 days post-inoculation (dpi), suggesting that CD8+ T cells contribute to control of acute RRV infection. Mice genetically deficient for CD8+ T cells or wild-type mice depleted of CD8+ T cells had elevated RRV loads in skeletal muscle tissue, but not joint-associated tissues, at 14 dpi, suggesting that the ability of CD8+ T cells to control RRV infection is tissue-dependent. Finally, adoptively transferred T cells were capable of reducing RRV loads in skeletal muscle tissue of Rag1−/− mice, indicating that T cells can contribute to the control of RRV infection in the absence of B cells and antibody. Collectively, these data demonstrate a role for T cells in the control of RRV infection and suggest that the antiviral capacity of T cells is controlled in a tissue-specific manner.
巴布亚新几内亚瓦尼莫爆发基孔肯雅病毒感染。
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