Recent advances targeting innate immunity-mediated therapies against HIV-1 infection.
2012
Early defence mechanisms of innate immunity respond rapidly to infection against HIV-1 in the genital mucosa.Additionally,innateimmunityoptimiseseffectiveadaptiveimmuneresponsesagainstpersistent HIV infection. Recent research has highlighted the intrinsic roles of apolipoprotein B mRNA-editing, enzyme-catalytic, polypeptide-like 3G, tripartite motif-containing protein 5, tetherin, sterile α-motif and histidine/aspartic acid domain-containing protein 1 in restricting HIV-1 replication. Likewise, certain endogenously secreted antimicrobial peptides, namely α/β/θ-defensins, lactoferrins, secretory leukocyte protease inhibitor, trappin-2/elafin and macrophage inflammatory protein-3α are reportedly protective. Whilst certain factors directly inhibit HIV, others can be permissive. Interferon-λ 3e xerts an anti-HIV function by activating Janus kinase-signal transducer and activator of transcription-mediated innate responses. Morphine has been found to impair intracellular innate immunity, contributing to HIV establishment in macrophages. Interestingly, protegrin-1 could be used therapeutically to inhibit early HIV-1 establishment. Moreover, chloroquine inhibits plasmacytoid dendritic cell activation and improveseffectiveT-cellresponses.Thisminireviewsummarizestherecentlyidentifiedtargetsforinnate immunity-mediated therapies and outlines the challenges that lie ahead in improving treatment of HIV infection.
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