Emtricitabine ((-)-FTC) is an orally active, non-cytotoxic (>100 μM/PBM, CEM, Vero, MT-4), potent nucleoside reverse transcriptase inhibitor (NRTI) against HIV type 1/2 (HIV-1 IC50/culture = 8 nM/PBM (LAV-1), 9 nM/CEM (LAV-1); HIV-2 IC50/culture = 0.7 nM/PBM (ROD2), 100 nM/CEM (Zy)), hepatitis B, as well as simian and feline immunodeficiency viruses. Emtricitabine is activated via 2′-deoxycytidine kinase-mediated phosphorylation to (-)-FTC-5′-triphosphate that inhibits viral reverse transcriptase in a dCTP-competitive manner (HIV-1 Ki = 2.9 μM).
Emtricitabine (FTC) and lamivudine (3TC), containing an oxathiolane ring with unnatural (-)-stereochemistry, are widely used nucleoside reverse transcriptase inhibitors (NRTIs) in anti-HIV therapy. Treatment with FTC or 3TC primarily selects for the HIV-1 RT M184V/I resistance mutations. Here we provide
Journal of virology, 75(10), 4771-4779 (2001-04-20)
Success in treating hepatitis B virus (HBV) infection with nucleoside analog drugs like lamivudine is limited by the emergence of drug-resistant viral strains upon prolonged therapy. The predominant lamivudine resistance mutations in HBV-infected patients are Met552IIe and Met552Val (Met552Ile/Val), frequently
The Journal of clinical investigation, 107(4), 449-455 (2001-02-22)
After receiving lamivudine for 3 years to treat chronic hepatitis B, 67-75% of patients develop B-domain L528M, C-domain M552I, or M552V mutations in the HBV polymerase that render hepatitis B virus (HBV) drug-resistant. The aim of this study was to
Journal of acquired immune deficiency syndromes (1999), 32(3), 255-258 (2003-03-11)
To assess the relative in vitro potency of the antiviral agents emtricitabine (FTC), lamivudine (3TC), and zidovudine (ZDV) in peripheral blood mononuclear cells (PBMCs), monocyte-derived macrophages, and MT-4 cells infected with HIV-1. DESIGN In vitro evaluation of the test compounds
Macaque models of simian or simian/human immunodeficiency virus (SIV or SHIV) infection are critical for the evaluation of antiretroviral (ARV)-based HIV treatment and prevention strategies. However, modelling human oral ARV administration is logistically challenging and fraught by limited adherence. Here
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