BMS-626529 (Temsavir) is a potent HIV-1 attachment inhibitor that targets HIV-1 gp120 and prevents its binding to CD4(+) T cells. BMS-626529 had half-maximal effective concentration (EC(50)) values of <10 nM against the vast majority of viral isolates. BMS-626529 exhibits an average EC50 against LAI virus of 0.7±0.4 nM. BMS-626529 exhibits an EC50 of 0.01 nM against the most susceptible virus and an EC50 of >2,000 nM against the least susceptible virus. BMS-626529 exhibits a broad spectrum of antiviral activity against a panel of clinical isolates, with an IC50 ranging from subnanomolar levels to >0.1 µM.
|Preparation method||Cytotoxicity assays are performed in the presence of serially diluted BMS-626529 for up to 6 days, and cell viability is quantitated using an XTT assay. To determine CC50 values (concentration of drug required to kill 50% of cells), laboratory-adapted peripheral blood mononuclear cells (PBMCs) are initially plated at a density of 0.1×106 cells/mL. In the absence of compounds, the cell densities typically reach 1×106 to 1.2×106/mL after 6 days.|
|Incubation time||6 days|
|Body Surface Area (m2)||0.007||0.025||0.15||0.05||0.02||0.5|
|Animal A (mg/kg) = Animal B (mg/kg) multiplied by||Animal B Km|
|Animal A Km|
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
|Solubility||DMSO: 10 mM|
Pharmacodynamics, safety, and pharmacokinetics of BMS-663068, an oral HIV-1 attachment inhibitor in HIV-1-infected subjects.
Nettles RE, et al. J Infect Dis. 2012 Oct 1;206(7):1002-11. PMID: 22896665.
In vitro antiviral characteristics of HIV-1 attachment inhibitor BMS-626529, the active component of the prodrug BMS-663068.
Nowicka-Sans B, et al. Antimicrob Agents Chemother. 2012 Jul;56(7):3498-507. PMID: 22547625.
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