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).
Antimicrobial agents and chemotherapy, 37(11), 2285-2292 (1993-11-01)
The pharmacokinetics and metabolism of the potent anti-human immunodeficiency virus and anti-hepatitis B virus compound, (-)-cis-5-fluoro-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl] cytosine (FTC), were investigated in male CD rats. Plasma clearance of 10 mg of FTC per kg of body weight was biexponential in rats
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
Antimicrobial agents and chemotherapy, 36(11), 2423-2431 (1992-11-01)
2',3'-Dideoxy-5-fluoro-3'-thiacytidine (FTC) has been shown to be a potent and selective compound against human immunodeficiency virus type 1 in acutely infected primary human lymphocytes. FTC is also active against human immunodeficiency virus type 2, simian immunodeficiency virus, and feline immunodeficiency
Journal of virology, 76(12), 6083-6092 (2002-05-22)
Drug-resistant mutants with a methionine-to-valine substitution at position 184 of reverse transcriptase (M184V) emerged within 5 weeks of initiation of therapy in four newborn macaques infected with simian immunodeficiency virus (SIVmac251) and treated with lamivudine (3TC) or emtricitabine [(-)-FTC] (two
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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