NF449

NF449化学性质

NF449性质、用途与生产工艺

生物活性 NF449 octasodium 是一种高效的 P2X1 受体拮抗剂，对 rP2X1、rP2X1+5、P2X2+3 的 IC50 分别为 0.28、0.69 和 120 nM。NF449 octasodium 是一种 Gsα 选择性 G 蛋白 (G Protein) 拮抗剂。NF449 octasodium 抑制 GTP[γS] 与 Gsα-s 结合的速率，抑制腺苷酸环化酶活性的刺激，阻断 β-肾上腺素能受体与 Gs 的偶联。
体外研究

NF449 suppressed the rate of GTP[γS] binding to rG _sα-s while barely affecting binding to rG _iα-1 (IC ₅₀ =140 nM), inhibits stimulation of adenylyl cyclase activity in S49 cyc− membranes (deficient in endogenous Gsα) by exogenously added Gsα-s, and blocks the coupling of β-adrenergic receptors to G _s (EC ₅₀ =7.9 μM).
体内研究

At a dose of 10 mg/kg, NF449 inhibits the ex vivo aggregation triggered by 5 g/ml collagen in WT mouse platelets without affecting that induced by 5 μM ADP. At a higher dose (50 mg/kg), NF449 inhibits ex vivo platelet aggregation in response to not only 10 g/ml collagen but also 5 M ADP, indicating nonselective inhibition of the P2Y1 and/or P2Y12 receptor.

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