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由巨生成的HIV-1的葡萄糖依赖的表型差异与CD4+T辅助细胞种群相比
Edwin J Heeregrave1, Jordan Thomas2, Toni M van Capel3
1Laboratory of Experimental Virology, Department of Medical Microbiology, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, Netherlands.
Frontiers in immunology
|July 7, 2023
概括
主体细胞显著影响人类免疫缺陷病毒1型 (HIV-1) 现型. 与淋巴细胞衍生的病毒相比,巨细胞衍生的HIV-1显示出对中和的抗性增加和增强的传播.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 宿主细胞类型影响人类免疫缺陷病毒1型 (HIV-1) 进入,复制和表型.
- 病毒的特征,如感染性,共受体的使用,和中和敏感性,可以被生产细胞改变.
- 这些变化可能源于结合的细胞特异分子或修改的病毒包膜糖蛋白 (gp41/120).
研究的目的:
- 为了研究生产者宿主细胞类型对HIV-1表型的影响.
- 为了比较来自不同细胞类型的基因相同的HIV-1菌株的传染性和中和敏感性.
- 为了确定宿主细胞特征是否影响病毒传播动态.
主要方法:
- 从巨细胞,CD4富含淋巴细胞和Th1/Th2 CD4+细胞系中产生了基因相同的HIV-1菌株.
- 通过测序,将病毒库存的传染性正常化,并通过测序证实了病毒基因同质性.
- 评估了各种细胞类型的感染性,对共同受体阻断剂的敏感性,DC-SIGN介导的捕获,CC-化学抑制和2G12中和.
主要成果:
- 从Th1或Th2细胞产生的HIV-1在测试细胞类型的传染性上没有妥协.
- 在 Th1/Th2衍生病毒之间对共受体阻断剂或DC-SIGN介导捕获的敏感度没有显著差异.
- 巨细胞产生的HIV-1与淋巴细胞衍生病毒相比,对CC-化学抑制具有相似的敏感性.
- 与淋巴细胞衍生的HIV-1相比,巨细胞衍生的HIV-1对2G12中和的抗性增加了14倍.
- 巨细胞产生的双热带 (R5/X4) HIV-1在DC-SIGN捕获后向CD4+细胞的传播效率比淋巴细胞衍生的HIV-1 (p<0.0001) 高6倍.
结论:
- 宿主细胞类型显著影响HIV-1表型,影响病毒对中和和传播效率的抗性.
- 从Th1细胞与Th2细胞生成的病毒表现出一致的表型.
- 这些发现提供了对宿主细胞介导的HIV-1病变发生的调制的见解.
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