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Histamine enhances HIV-1-induced modulation of dendritic cells to skew naïve T cell differentiation toward regulatory T cells
Journal article   Open access   Peer reviewed

Histamine enhances HIV-1-induced modulation of dendritic cells to skew naïve T cell differentiation toward regulatory T cells

Rong-Rong Zhai, Ai-Ping Jiang, Hai-Bo Wang, Li Ma, Xiao-Xin Ren, Jin-Feng Jiang, Li Wu, Ji-Fu Wei and Jian-Hua Wang
Virology (New York, N.Y.), Vol.442(2), pp.163-172
08/01/2013
DOI: 10.1016/j.virol.2013.04.009
PMID: 23652320
url
https://doi.org/10.1016/j.virol.2013.04.009View
Published (Version of record) Open Access

Abstract

Altered cytokine profiles and imbalanced frequencies of CD4+ T helper cell subsets are thought to be linked with HIV-1/AIDS pathogenesis, but the causes need to be further clarified. Histamine, a biogenic amine with many functions, shows enhancement in HIV-1 infected individuals, which are considered to link with disease progression, but is poorly understood. This study investigated histamine-assisted HIV-1 modulation of dendritic cell (DC) functions. Histamine and HIV-1 showed a synergistic role in induction of interleukin-10; histamine inhibited HIV-1-induced IL-12 production from MDDCs (monocyte-derived DCs); notably, histamine augmented HIV-1-induced MDDC functional polarization and skewed naïve T cell differentiation toward regulatory T cells (Tregs). The results indicate the novel role of histamine in HIV-1-induced DC functional regulation, which promoted Treg cell differentiation and up-regulated immunosuppressive factors. These findings help to bridge the correlation between elevated histamine and increased Treg cell frequency in HIV-1 infected individuals, and add to our understanding of HIV-1-induced immunosuppression.
HIV-1 Histamine Indoleamine 2,3-dioxygenase Dendritic cells Regulatory T cells

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