Biological parameters of HIV‐1 infection in primary intestinal lymphocytes and macrophages

Biological parameters of HIV‐1 infection in primary intestinal lymphocytes and macrophages
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原代肠道淋巴细胞和巨噬细胞中HIV-1感染的生物学参数

DOI:
10.1189/jlb.68.3.360
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发表时间:
2000
影响因子:
5.5
通讯作者:
G. Shaw
G. Shaw
中科院分区:
医学3区
文献类型:
--
作者:
Phillip D. Smith;G. Meng;Marty T. Sellers;T. S. Rogers;G. Shaw

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粘液表面是大多数HIV-1感染的入口,在疾病发病机制中起重要作用。为了表征粘膜细胞中HIV-1感染的生物学参数,我们使用正常人小肠的纯化固有层淋巴细胞和巨噬细胞来确定HIV-1受体和辅助受体在肠道单核细胞上的分布以及这些细胞对HIV-1感染的容许性。固有层淋巴细胞表达CD 4、CCR 5和CXCR 4。相反,固有层巨噬细胞表达CD 4,但不表达CCR 5或CXCR 4。肠道淋巴细胞支持HIV-1的R5和X4分离株的复制,但固有层巨噬细胞对两者都不允许。RANTES、巨噬细胞炎性蛋白-1 α(MIP-1α)和MIP-1β抑制BaL对肠淋巴细胞的感染,表明R5对肠淋巴细胞的感染是由CCR 5介导的。因此,在早期HIV-1感染期间,固有层淋巴细胞而不是巨噬细胞是肠粘膜中HIV-1感染的靶单核细胞。
Mucosal surfaces are the portal of entry for most HIV‐1 infections and play an important role in disease pathogenesis. To characterize the biological parameters of HIV‐1 infection in mucosal cells, we used purified lamina propria lymphocytes and macrophages from normal human small intestine to determine the distribution of the HIV‐1 receptor and coreceptors on intestinal mononuclear cells and the permissiveness of these cells to HIV‐1 infection. Lamina propria lymphocytes expressed CD4, CCR5, and CXCR4. In contrast, lamina propria macrophages expressed CD4 but not CCR5 or CXCR4. Intestinal lymphocytes supported replication by R5 and X4 isolates of HIV‐1, but lamina propria macrophages were permissive to neither. RANTES, macrophage inflammatory protein‐1α (MIP‐1α), and MIP‐1β inhibited infection of intestinal lymphocytes by BaL, indicating that R5 infection of the intestinal lymphocytes was mediated by CCR5. Thus, resident lamina propria lymphocytes, not macrophages, are the target mononuclear cell for HIV‐1 infection in the intestinal mucosa during early HIV‐1 infection.
猿猴免疫缺陷病毒快速感染口腔粘膜相关淋巴组织。
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期刊: Science (New York, N.Y.)
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