Ineffective CD8(+) T-cell immunity to adeno-associated virus can result in prolonged liver injury and fibrogenesis.

Ineffective CD8(+) T-cell immunity to adeno-associated virus can result in prolonged liver injury and fibrogenesis.
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CD8(+) T 细胞对腺相关病毒的无效免疫可导致长期肝损伤和纤维化。

DOI:
10.1016/j.ajpath.2011.08.004
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发表时间:
2011
期刊:
The American journal of pathology
影响因子:
--
通讯作者:
Crispe,IanN
Crispe,IanN
中科院分区:
--
文献类型:
--
作者:
Spahn,Jessica;Pierce,RobertH;Crispe,IanN

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慢性病毒性肝炎依赖于T细胞免疫应答不能清除抗原。这导致持续的免疫应答,伴随着组织损伤和纤维化。我们已经创建了一个小鼠模型,再现这些效果,基于CD 8 +T细胞的肝细胞抗原的腺相关病毒(AAV)载体交付的响应。1万个抗原特异性CD 8 +T细胞在肝脏中缓慢扩增,可导致亚急性炎症性肝炎伴星状细胞活化和纤维化。随着时间的推移,抗原特异性CD 8 +T细胞显示出衰竭的迹象,包括PD-1的高表达,最终炎症和纤维化都消退。该模型允许研究慢性肝脏免疫病理学及其解决方案。
Chronic viral hepatitis depends on the inability of the T-cell immune response to eradicate antigen. This results in a sustained immune response accompanied by tissue injury and fibrogenesis. We have created a mouse model that reproduces these effects, based on the response of CD8+T cells to hepatocellular antigen delivered by an adeno-associated virus (AAV) vector. Ten thousand antigen-specific CD8+T cells undergo slow expansion in the liver and can precipitate a subacute inflammatory hepatitis with stellate cell activation and fibrosis. Over time, antigen-specific CD8+T cells show signs of exhaustion, including high expression of PD-1, and eventually both inflammation and fibrosis resolve. This model allows the investigation of both chronic liver immunopathology and its resolution.
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