FK706 是一种有效，缓慢结合和竞争性的人中性粒细胞弹性蛋白酶抑制剂，IC₅₀ 为 83 nM，K_i 为 4.2 nM。FK706 还抑制小鼠中性粒细胞弹性蛋白酶和猪胰弹性蛋白酶，IC₅₀ 分别为 22 nM 和 100 nM，并且对其他丝氨酸蛋白酶 (例如人胰胰蛋白酶，人胰腺α-胰凝乳蛋白酶和人白细胞组织蛋白酶G) 没有抑制活性。FK706 具有抗炎作用。

FK706 is a potent, slow-binding and competitive inhibitor of human neutrophil elastase with an IC 50 of 83 nM and a K i of 4.2 nM. FK706 also inhibits mouse neutrophil elastase and porcine pancreatic elastase with IC 50 s of 22 nM and 100 nM, respectively, and has no inhibitory activity against other serine proteinases such as human pancreatic trypsin, human pancreatic α-chymotrypsin and human leukocyte cathepsin G. FK706 has anti-inflammatory effect.

Solid

IC50: 83 nM (Human neutrophil elastase), 22 nM (Mouse neutrophil elastase) and 100 nM (Porcine pancreatic elastase);
Ki: 4.2 nM (Human neutrophil elastase)

FK706 effectively inhibits the hydrolysis of bovine neck ligament elastin (2 mg/mL final concentration) by human neutrophil elastase (4 μg/mL final concentration) with an IC50 value of 230 nM.
FK706 blocks the release of inflammatory chemokines, suppresses the expression of IL-8 and MCP-1 mRNA, and suppresses NF-κB activation. It seems possible that FK706 may directly blocks human lung fibroblasts activation of NF-κB, preventing expression of inflammatory chemokines during cigarette smoke–induced lung inflammation. has not independently confirmed the accuracy of these methods. They are for reference only.

FK706 (10-100 mg/kg; subcutaneous injection; for 1-6 hours; male C57BL mice) treatment significantly suppresses human neutrophil elastase (20 μg/paw)-induced paw edema in mice in a dose-dependent manner (47% inhibition at a dose of 100 mg/kg). has not independently confirmed the accuracy of these methods. They are for reference only.

Room temperature in continental US; may vary elsewhere.

4°C, sealed storage, away from moistur In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

[1]. Shinguh Y, et al. Biochemical and pharmacological characterization of FK706, a novel elastase inhibitor. Eur J Pharmacol. 1997 Oct 15;337(1):63-71.
[2]. Numanami H, et al. Serine protease inhibitors modulate smoke-induced chemokine release from human lung fibroblasts. Am J Respir Cell Mol Biol. 2003 Nov;29(5):613-9.

In Vitro: DMSO : 115 mg/mL (194.08 mM; Need ultrasonic)H₂O : ≥ 100 mg/mL (168.76 mM)