Luciana J. Costa

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BACKGROUND Nef is an accessory protein of primate lentiviruses, HIV-1, HIV-2 and SIV. Besides removing CD4 and MHC class I from the surface and activating cellular signaling cascades, Nef also binds GagPol during late stages of the viral replicative cycle. In this report, we investigated further the ability of Nef to facilitate the replication of HIV-1. (More)
Previous results demonstrate that the hybrid synthetic pterocarpanquinone LQB-118 presents antileishmanial activity against Leishmania amazonensis in a mouse model. The aim of the present study was to use a hamster model to investigate whether LQB-118 presents antileishmanial activity against Leishmania (Viannia) braziliensis, which is the major Leishmania(More)
The unspliced human immunodeficiency virus type 1 (HIV-1) RNA is both the messenger for Gag and Gag-Pol and the viral genomic RNA (vRNA) that is packaged into the virion. Although Gag alone is sufficient for the incorporation of vRNA into virus particles, Gag-Pol molecules play an important role in vRNA dimerization and virion maturation. Here, a cis model(More)
Nef is an important player for viral infectivity and AIDS progression, but the mechanisms involved are not completely understood. It was previously demonstrated that Nef interacts with GagPol through p6*-Protease region. Because p6* and Protease are involved in processing, we explored the effect of Nef on viral Protease activity and virion assembly. Using(More)
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