PAC-1 is aprocaspase-3activator that inducesapoptosisincancercells with anEC₅₀of 2.08 μM.

PAC-1 activates procaspase-3 with an EC₅₀of 2.08 μM. PAC-1 exhibits an enhanced zinc chelating ability (EC₅₀= 7.08 μM). PAC-1 induces leukemia cell death with IC₅₀of 4.03 μM, which is consistent with the values reported by other investigators. PAC-1 treatment also results in death of other malignant cells in a concentration-dependent manner with IC₅₀s ranging from 4.03 to 53.44μM. The overall mean IC₅₀in the fifteen malignant cell lines is 0.88 mM for WF-210 and 19.40 μM for PAC-1. In contrast, the sensitivity of the normal human cells (PBL, L-02, HUVEC and MCF 10A) to WF-210 is 2.6-fold lower (mean IC₅₀=412.34 μM) than PAC-1 (mean IC₅₀=158.29 μM)^[1]. Procaspase-activating compound-1 (PAC-1) is the first direct caspase-activating compound discovered. PAC-1 treatment upregulates Ero1α in multiple cell lines, whereas silencing of Ero1α significantly inhibits calcium release from ER and cell death^[2].

To evaluate the in vivo effect of WF-210 on the growth of malignant tumors, we examined the ability of WF-210 to suppress tumor growth in mouse Hep3B and MDA-MB-435 xenograft models. These two cell lines express procaspase-3 at relatively high levels. Tumors induced by xenografts of the liver cancer cell Hep3B are allowed to develop and grow to a size of 100 mm³, after which WF-210 (2.5 mg/kg) or PAC-1 (5.0 mg/kg) is given daily for two weeks by intravenous (i.v.) administration. As shown in both PAC-1 and WF-210 significantly inhibits the growth of Hep3B tumor xenografts^[1].

392.49

Solid

C₂₃H₂₈N₄O₂

315183-21-2

半胱天冬酶原活化物1

Room temperature in continental US; may vary elsewhere.

DMSO : 50 mg/mL(127.39 mM;Need ultrasonic)

H₂O :< 0.1 mg/mL(insoluble)

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℃, 6 months; -20℃, 1 month。-80℃ 储存时，请在 6 个月内使用，-20℃ 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 (6.37 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (6.37 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-CDin saline)

  Solubility: 2.5 mg/mL (6.37 mM); Suspended solution; Need ultrasonic

  此方案可获得 2.5 mg/mL (6.37 mM) 的均匀悬浊液，悬浊液可用于口服和腹腔注射。

  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 μL20% 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 (6.37 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (6.37 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。