Human immunodeficiency virus type 1 (HIV-1), the causative agent of acquired immunodeficiency syndrome (AIDS) in humans, infects CD4+ T cells as well as macrophages and dendritic cells by binding to its primary receptor, CD4, and a co-receptor, usually CCR5 or CXCR4 [1], [2], [3]. Here, CXCR4 is linked to AIDS.