Research Area
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Description
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Inflammation |
Biological Activity
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Description
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VX-702 is a highly selective inhibitor of p38 MAPKα with IC50 of 4-20 nM. |
Targets
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p38 MAPKα |
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IC50 |
4 - 20 nM [1] |
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In Vitro
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Pre-incubation of platelets with VX-702 (1 μM) completely or partially inhibits p38 activation (IC50 4 to 20 nM) induced by platelet agonists including thrombin, SFLLRN, AYPGKF, U46619 and collagen. VX-702 shows no effect on platelet aggregation induced by any of the p38 MAPK agonists in the presence or absence of anti-platelet therapies. [1] VX-702 inhibits the production of IL-6, IL-1β and TNFα (IC50 = 59, 122 and 99 ng/mL, respectively) in a dose-dependent manner. [2] |
In Vivo
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The half-life of VX-702 is 16 to 20 hours, with a median clearance of 3.75 L/h and a volume of distribution of 73 L/kg. Both AUC and Cmax values are dose proportional for VX-702, which is predominantly cleared renally. [2] VX-702 (at a dose of 0.1 mg/kg twice daily) has an equivalent effect as that of methotrexate (0.1 mg/kg). In addition, VX-702 (5 mg/kg twice daily) also has an equivalent effect as prednisolone (10 mg/kg once daily), as measured by percentage inhibition of wrist joint erosion and inflammation score. [3] VX-702 selectively inhibits activation of p38 MAPK after ischemia with no effects on ERKs and JNKs. The MI/AAR ratio is significantly reduced in the 50 mg/kg group compared with the 5 mg/kg and vehicle groups.[4] |
Clinical Trials
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VX-702 is currently in Phase II clinical trial in patients with rheumatoid arthritis. |
Features
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VX-702 is a highly selective, orally active inhibitor of p38 MAPK |
Protocol
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Animal Study
[3]
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Animal Models |
Mouse with collagen-induced arthritis |
Formulation |
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Doses |
≤10 mg/kg |
Administration |
Administered via p.o. |
References |
[1] Kuliopulos A, et al. Thromb Haemost, 2004, 92(6), 1387-1393.
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[2] Braddock M, IDDB Meeting Report, 2005, March 14-15.
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[3] Gill A, IDDB Meeing Report, 2002, March 06-08.
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[4] Bhattacharya K, et al. Circulation, 2003, 108(17), 882.
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