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Previous studies with BIT225 (N-carbamimidoyl-5-(1-methyl-1H-pyrazol-4-yl)-2-naphthamide) have demonstrated a unique antiviral activity that blocks the release of HIV-1 from monocyte-derived macrophages (MDM). Antagonising the ion channel formed by HIV-1 Vpu, BIT225 preferentially targets de novo intracellular virus produced in 'virus-containing compartments' of MDM. In primary infections, dendritic cells (DC) are one of the first cells infected by HIV-1 and can transfer virus to more permissive CD4(+) T cells, making these cells an important target for novel antiviral therapies. To extend previous findings with BIT225, we aimed to further characterise the antiviral activity of BIT225 on HIV-1 replication in monocyte-derived DC (MDDC).", 'The anti-HIV-1 activity of BIT225 was evaluated in vitro within MDDC alone and in co-cultures with activated CD4(+) T cells to examine the effect of the drug on HIV-1 transfer. Antiviral activity was determined by measuring HIV-1 reverse transcriptase activity in the culture supernatant of BIT225 treated and DMSO control cultures. A single dose of BIT225 resulted in a mean (SE) peak inhibition of HIV-1 release from MDDC by 74.5% (0.6) following 14days of culture and a 6-fold reduction of HIV-1 transfer to activated uninfected CD4(+) T cells in co-culture.
Does the antiviral compound BIT225 inhibit HIV-1 replication in myeloid dendritic cells?