Cyasterone, a naturalEGFRinhibitor, mainly isolated fromAjuga decumbensThunb (Labiatae). Cyasterone manifests anti-proliferation effect by inducedapoptosisand cell cycle arrests. Cyasterone may serves as a therapeutic anti-tumor agent against human tumors^[1].

IC50: EGFR^[1]

Cyasterone exerts cytotoxicity on multiple cell lines: HeLa (IC₅₀=77.24 μg/ml); HepG-2 (IC₅₀=52.03 μg/ml); MCF-7 (IC₅₀=82.07 μg/ml) and MCF-7 (IC₅₀=82.07 μg/ml). And It has none cytotoxicity (IC₅₀>400 μg/ml) on 3 types of carcinoma (HT-29, Caco-2, T47D) and 1 type of normal (NIH 3T3) cell lines^[1].
Cyasterone (0-60 μg/ml; 48 hours) causes a significantly decreasing of the cell proliferation. It inhibits cell growth as a dose-dependent manner, exhibits IC₅₀values of 38.50 μg/ml and 32.96 μg/ml, respectively^[1].
Cyasterone (0-60 μg/ml; 24 hours) decreases p-EGFR, p-MEK, and p-mTOR as a dose-dependent manner in A549 cells, it affects the MAPK signaling pathway activities^[1].

Cyasterone (intraperitoneal injection; 5 mg/kg, 10 mg/kg and 15 mg/kg; 21 days) has anti-proliferation effect in vivo and inhibits MGC823 cells xenografted tumor growth in vivo with few changes in body weights^[2].

520.65

Solid

C₂₉H₄₄O₈

17086-76-9

杯苋甾酮

• Steroids

• Plants
• Labiatae
• Ajuga decumbensThunb.

• Plants
• Amaranthaceae
• Achyranthes bidentata

Room temperature in continental US; may vary elsewhere.

4°C, protect from light

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

DMSO : 100 mg/mL(192.07 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℃, 6 months; -20℃, 1 month (protect from light)。-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    90% (20%SBE-β-CDin saline)

  Solubility: ≥ 2.5 mg/mL (4.80 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (4.80 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 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
• 2.

  请依序添加每种溶剂： 10% DMSO    90%corn oil

  Solubility: ≥ 2.5 mg/mL (4.80 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (4.80 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。