Z-WEHD-FMK is a potent, cell-permeable and irreversible caspase-1/5 inhibitor. Z-WEHD-FMK also exhibits a robust inhibitory effect on cathepsin B activity (IC₅₀=6 μM). Z-WEHD-FMK can be used to investigate cells for evidence of apoptosis^[1][2][4].

Z-WEHD-FMK (80 μM; 9 hours) elicits a near-complete blockage of C. trachomatis-induced cleavage of golgin-84 and increases GM130 expression in cells^[1].
Z-WEHD-FMK (30 min before being exposed to E. piscicida) effectively inhibits 0909I E. piscicida induced ZF4 cells cytotoxicity and pyroptotic morphology. And in addition, it also inhibits the cytotoxicity induced by cytosolic LPS delivery^[2].
Z-WEHD-FMK (20 μM;18-24 hours following Cr³⁺,Ni²⁺, and Co²⁺) significantly induces a decrease of 76% to 86% in IL-1β release with 200 to 400 ppm Cr³⁺, it also induces a decrease of 35% to 45% with 48 ppm Ni²⁺ or higher, Finally, this caspase-1 inhibitor induced a decrease with 6 ppm Co²⁺, down to a level below the detection threshold, and a decrease of 40% to 48% with 12 to 24 ppm Co²⁺ in bone marrow-derived macrophages (BMDM)^[3].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

763.77

C₃₇H₄₂FN₇O₁₀

210345-00-9

Room temperature in continental US; may vary elsewhere.

DMSO : 100 mg/mL (130.93 mM; Need ultrasonic)

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。
储备液的保存方式和期限：-80°C, 6 months; -20°C, 1 month。-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液，再依次添加助溶剂：

——为保证实验结果的可靠性，澄清的储备液可以根据储存条件，适当保存；体内实验的工作液，建议您现用现配，当天使用； 以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比；如在配制过程中出现沉淀、析出现象，可以通过加热和/或超声的方式助溶

• 1.

  请依序添加每种溶剂：;10% DMSO ;; 40% PEG300 ;; 5% Tween-80 ;; 45% saline

  Solubility: ≥ 2.5 mg/mL (3.27 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (3.27 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；向上述体系中加入50 μL Tween-80，混合均匀；然后继续加入 450 μL生理盐水定容至 1 mL。

  将 0.9 g 氯化钠，完全溶解于 100 mL ddH₂O 中，得到澄清透明的生理盐水溶液

• 2.

  请依序添加每种溶剂：;10% DMSO ;; 90% (20% SBE-β-CD in saline)

  Solubility: ≥ 2.5 mg/mL (3.27 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (3.27 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中，混合均匀。

  将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中，再用生理盐水定容至 10 mL，完全溶解，澄清透明
• 3.

  请依序添加每种溶剂：;10% DMSO ;; 90% corn oil

  Solubility: ≥ 2.5 mg/mL (3.27 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (3.27 mM，饱和度未知) 的澄清溶液，此方案不适用于实验周期在半个月以上的实验。

  以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。

• [1]. Kamada S, et al. Caspase-4 and caspase-5, members of the ICE/CED-3 family of cysteine proteases, are CrmA-inhibitable proteases.Cell Death Differ. 1997 Aug;4(6):473-8.

  [2]. Yang D, et al. Sensing of cytosolic LPS through caspy2 pyrin domain mediates noncanonical inflammasome activation in zebrafish.Nat Commun. 2018 Aug 3;9(1):3052.

  [3]. Ferko MA, et al. Effects of metal ions on caspase-1 activation and interleukin-1β release in murine bone marrow-derived macrophages.PLoS One. 2018 Aug 23;13(8):e0199936.

  [4]. Newman ZL, et al. CA-074Me protection against anthrax lethal toxin.Infect Immun. 2009 Oct;77(10):4327-36.