Research Area
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Description
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Cardiovascular Disease |
Biological Activity
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Description
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BMS-740808 is a highly potent, selective inhibitor of blood coagulation factor Xa (fXa) with Ki with 0.03 nM. |
Targets
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fXa |
Rabbit AVshunt |
Thrombin |
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IC50 |
0.03 nM (Ki) |
135 nM |
35 nM (Ki) [1] |
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In Vitro
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BMS-740808 is highly potent with a rapid onset of inhibition (2.7 × 107 M-1 s-1), selective (>1000-fold over other proteases), efficacious in the AVShunt thrombosis model. BMS-740808 is synthesized by modification of employing bicyclic pyrazolo-pyridinone scaffold to Razaxaban, a pyrazole based fXa inhibitor. Especially for BMS-740808, the introduction of a 3(R)-hydroxyl moiety on the pyrrolidine ring results in a significant enhancement in potency. BMS-740808 also shows the high affinity for thrombin. [1] |
In Vivo
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The pharmacokinetic profile for BMS-740808 is comparable to that of Razaxaban with moderate half life, whereas BMS-740808 shows low clearance, low Vdss, moderate half life and high oral bio-availability, which is quite possibly due to the hydroxyl substituent on the cyclic amino moiety. [1] |
Clinical Trials
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Features
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Protocol
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Kinase Assay
[1]
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Ki Determination |
FXa (1 nM) is added to a 96-well plate containing BMS-740808 (5 pM to 3 μM) in buffer A (20 mM HEPES, 0.15 M NaCl, 0.1% PEG-8000, 5 mM CaCl2, pH 7.4). S-2765 (N-α-Z-d-Arg-Gly-Arg-p Nitroanilide) at 200 μM is added, and substrate hydrolysis is monitored at 405 nm. Data are analyzed by Batch Ki software. |
Animal Study
[1]
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Animal Models |
Male rabbit AVShunt thrombosis model. |
Formulation |
BMS-740808 is dissolved in saline. |
Doses |
2 μM |
Administration |
Given as continuous i.v. infusion via the jugular vein |
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