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A Comparison of Cell Activation, Exhaustion, and Expression of HIV Coreceptors and Restriction Factors in HIV-1- and HIV-2-Infected Nonprogressors
AIDS Research and Human Retroviruses ( IF 1.5 ) Pub Date : 2021-03-05 , DOI: 10.1089/aid.2020.0084
Mariama Sadjo Diallo 1 , Assia Samri 1 , Charlotte Charpentier 2 , Mélanie Bertine 2 , Rémi Cheynier 3 , Rodolphe Thiébaut 4 , Sophie Matheron 5 , Fidéline Collin 5 , Martine Braibant 6 , Daniel Candotti 7 , Françoise Brun-Vézinet 8 , Brigitte Autran 1 ,
Affiliation  

Human immunodeficiency viruses induce rare attenuated diseases due either to HIV-1 in the exceptional long-term nonprogressors (LTNPs) or to HIV-2 in West Africa. To better understand characteristics of these two disease types we performed a multiplex comparative analysis of cell activation, exhaustion, and expression of coreceptors and restriction factors in CD4 T cells susceptible to harbor those viruses. We analyzed by flow cytometry the expression of HLA-DR, PD1, CCR5, CXCR6, SAMHD1, Blimp-1, and TRIM5α on CD4 T cell subsets from 10 HIV-1+ LTNPs and 14 HIV-2+ (12 nonprogressors and 2 progressors) of the ANRS CO-15 and CO-5 cohorts, respectively, and 12 HIV healthy donors (HD). The V3 loop of the HIV-1 envelope from 6 HIV-1+ LTNPs was sequenced to determine the CXCR6-binding capacity. Proportions of HLA-DR+ and PD1+ cells were higher in memory CD4 T subsets from HIV-1 LTNPs compared with HIV-2 and HD. Similar findings were observed for CCR5+ cells although limited to central-memory CD4 T cell (TCM) and follicular helper T cell subsets, whereas all major subsets from HIV-1 LTNPs contained less CXCR6+ cells compared with HIV-2. All six V3 loop sequences from HIV-1 LTNPs contained a proline at position 326. Proportions of SAMHD1+ cells were higher in all resting CD4 T subsets from HIV-1 LTNPs compared with the other groups, whereas Blimp-1+ and Trim5α+ cells did not differ. The CD4 T cell subsets from HIV-1 LTNPs differ from those of HIV-2-infected subjects by higher levels of activation, exhaustion, and SAMHD1 expression that can reflect the distinct patterns of host/virus relationships.

中文翻译:

HIV-1 和 HIV-2 感染的非进展者中 HIV 辅助受体和限制因子的细胞活化、耗竭和表达的比较

人类免疫缺陷病毒会诱发罕见的减毒疾病,这可能是由于特殊长期非进展者 (LTNPs) 中的 HIV-1 或西非的 HIV-2 所致。为了更好地了解这两种疾病类型的特征,我们对易感染这些病毒的 CD4 T 细胞中的辅助受体和限制因子的细胞活化、耗竭和表达进行了多重比较分析。我们通过流式细胞术分析了来自 10 个 HIV-1 + LTNP 和 14 个 HIV-2 +(12 个非进展者和 2 个进展者)CD4 T 细胞亚群上 HLA-DR、PD1、CCR5、CXCR6、SAMHD1、Blimp-1 和 TRIM5α 的表达) 的 ANRS CO-15 和 CO-5 队列,以及 12 个 HIV -健康的捐赠者 (HD)。对来自 6 个 HIV-1+ LTNPs 的 HIV-1 包膜的 V3 环进行测序以确定 CXCR6 结合能力。HLA-DR +的比例与 HIV-2 和 HD 相比,来自 HIV-1 LTNPs 的记忆 CD4 T 亚群中的 PD1+ 细胞更高。在 CCR5+ 细胞中观察到类似的发现,尽管仅限于中央记忆 CD4 T 细胞 (TCM) 和滤泡辅助 T 细胞亚群,而来自 HIV-1 LTNPs 的所有主要亚群与 HIV-2 相比含有较少的 CXCR6+ 细胞。来自 HIV-1 LTNPs 的所有 6 个 V3 环序列在 326 位都含有脯氨酸。与其他组相比,来自 HIV-1 LTNPs 的所有静息 CD4 T 亚群中 SAMHD1+ 细胞的比例高于其他组,而 Blimp-1+ 和 Trim5α+ 细胞确实如此没有区别。来自 HIV-1 LTNPs 的 CD4 T 细胞亚群与 HIV-2 感染受试者的不同之处在于更高水平的激活、耗竭和 SAMHD1 表达,这可以反映宿主/病毒关系的不同模式。
更新日期:2021-03-09
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