Tsunetsugu-Yokota Y, Akagawa K, Kimoto H, Suzuki K, Iwasaki M, Yasuda S, Häusser G, Hultgren C, Meyerhans A, Takemori T
Department of Immunology, National Institute of Health and AIDS Research Center, Tokyo, Japan.
J Virol. 1995 Jul;69(7):4544-7. doi: 10.1128/JVI.69.7.4544-4547.1995.
The susceptibility of monocyte-derived cultured dendritic cells (DCs) to human immunodeficiency virus (HIV) infection and their role in viral transmission in the immune response were studied in detail. We observed that highly purified cultured DCs were infected with the T-tropic Lai strain of HIV type 1 (HIV-1Lai) via the CD4 receptor, and this was followed by formation of the complete provirus as detected by PCR. HIV mRNAs were transcribed at only low levels, and virus production was undectable; however, the addition of the purified protein derivative antigen of tuberculin and of autologous resting T cells to HIV-1Lai-infected DCs but not to HIV-1Lai-infected macrophages led to massive HIV transmission and production. These data suggest that the interaction of infected DCs with T cells during the normal immune response could play an important role in the activation and expansion of HIV.
详细研究了单核细胞衍生的培养树突状细胞(DCs)对人类免疫缺陷病毒(HIV)感染的易感性及其在免疫反应中病毒传播的作用。我们观察到,高度纯化的培养DCs通过CD4受体被1型HIV的T嗜性Lai株(HIV-1Lai)感染,随后通过PCR检测到形成了完整的前病毒。HIV mRNA仅在低水平转录,且未检测到病毒产生;然而,将结核菌素纯化蛋白衍生物抗原和自体静息T细胞添加到HIV-1Lai感染的DCs中,而不是添加到HIV-1Lai感染的巨噬细胞中,会导致大量HIV传播和产生。这些数据表明,在正常免疫反应期间,受感染的DCs与T细胞的相互作用可能在HIV的激活和扩增中起重要作用。