Description |
Efipladib is a potent, selective and orally active cPLA2α inhibitor with an IC50 of 0.04 μM and a Kd of 0.067 μM[1].
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Related Catalog |
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Target |
cPLA2α:0.04 μM (IC50)
cPLA2α:0.067 μM (Ki)
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In Vitro |
Efipladib (10-25 μM; 24-72 h) 增加 PC3 和 LNCaP 细胞中 COX-1 和 PGE2 水平[3]。 Western Blot Analysis[3] Cell Line: PC3 and LNCaP cells Concentration: 10, 15, 20 and 25 μM Incubation Time: 72 h Result: Significantly decreased cPLA2α activity. Increased COX-1 protein levels. Increased COX-2 protein levels in PC3 cells.
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In Vivo |
Efipladib (100 mg/kg; p.o.; BID for 31 days) 可逆转小鼠胶原性关节炎 (CIA) 模型的严重程度[1]。 Efipladib (100 mg/kg; p.o.; once) 在给药后 1 小时显著抑制大鼠完全弗氏佐剂 (CFA) 伤害感觉模型中的伤害反应[2]。 Efipladib 无法穿过血脑屏障进入中央室[2]。 Efipladib (100 nM; IT; 5 μL) 降低大鼠脑脊液 PGE2 水平[2]。 Animal Model: Mouse collagen-induced arthritis (CIA) model[1] Dosage: 100 mg/kg Administration: PO, BID for 31 days Result: Gave a dramatic reduction in the clinical disease severity score relative to the vehicle treated group. Animal Model: Male Sprague-Dawley rats[2] Dosage: 100 nM in 5 μL of 100% DMSO/rat Administration: Intrathecal administration Result: Reduced PGE2 levels in the cerebrospinal fluid (CSF) by 45-60%, yet there was no effect on the nociceptive response.
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References |
[1]. McKew J C, et al. Indole Cytosolic Phospholipase A2 α Inhibitors: Discovery and in Vitro and in Vivo Characterization of 4-{3-[5-Chloro-2-(2-{[(3, 4-dichlorobenzyl) sulfonyl] amino} ethyl)-1-(diphenylmethyl)-1 H-indol-3-yl] propyl} benzoic Acid, Efipladib. Journal of medicinal chemistry, 2008, 51(12): 3388-3413. [2]. Nickerson-Nutter CL, et al. The cPLA2α inhibitor efipladib decreases nociceptive responses without affecting PGE2 levels in the cerebral spinal fluid. Neuropharmacology. 2011 Mar;60(4):633-41. [3]. Niknami M, et al. Decrease in expression or activity of cytosolic phospholipase A2alpha increases cyclooxygenase-1 action: A cross-talk between key enzymes in arachidonic acid pathway in prostate cancer cells. Biochim Biophys Acta. 2010 Jul;1801(7):731-7.
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