20-Hydroxyecdysone 20-羟基蜕皮素;β-蜕皮甾酮;Ecdysone (α-Ecdysone);Caspase;CAS NO 5289-74-7;
20-羟基蜕皮素(20-Hydroxyecdysone),是一种普遍存在于植物和动物中的蜕皮激素(蜕皮甾体)。黑腹果蝇变态过程中控制细胞死亡。植物体生成的20-羟基蜕皮素用作一种防御方式来破坏害虫的发育。靶向组织中,20-羟基蜕皮素与核激素受体、蜕皮激素受体结合,启动引起细胞周期停滞的信号级联。
产品特性
1) CAS NO:5289-74-7
2) 化学名:2β,3β,14α,20R,22R,25-Hexahydroxy-5β-cholest-7-en-6-one
3) 同义名:β-Ecdysone; Ecdysterone; Isoinokosterone; β-蜕皮甾酮;20-羟基蜕皮甾酮;蜕皮激素;
4) 分子式:C27H44O7
5) 分子量:480.6 g/mol
6) 外观:固体
7) 纯度:≥98%
8) 溶解性:溶于DMSO(30mg/ml),DMF(30mg/ml),乙醇(25mg/ml)
9) 化学结构式:
保存与运输方法
保存:2-8℃避光干燥保存,或置于-20℃避光干燥长期保存,至少2年有效。
运输:室温运输。
注意事项
1) 为了让化合物更好的溶解,可通过37℃加热或(和)超声波水浴中震动片刻来处理。若实验所需浓度过大甚至达产品溶解极限,请添加助溶剂助溶或自行调整浓度。
2) 所有的化合物从低温取出后,务必置于室温平衡至少30min,之后再开盖使用。对于量很少(或肉眼几乎看不到)的化合物务必直接往管内加入适量的溶剂来溶解。
3) 为了您的安全和健康,请穿实验服并戴一次性手套操作。
储存液制备
质量
溶剂体积 浓度 |
10mg | 50mg | 100mg |
1mM | 20.8073 mL | 104.0366 mL | 208.0732 mL |
5mM | 4.1615 mL | 20.8073 mL | 41.6146 mL |
10mM | 2.0807 mL | 10.4037 mL | 20.8073 mL |
【温馨提示】: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,请分装置于≤-20℃保存,避免反复冻融造成的产品失效。
使用方法(来自文献,仅做参考)
文献1,Dong Y-C, Chen Z-Z, Clarke AR and Niu C-Y (2019) Changes in Energy Metabolism Trigger Pupal Diapause Transition of Bactrocera minax After 20-Hydroxyecdysone Application. Front. Physiol. 10:1288. doi: 10.3389/fphys.2019.01288
体内研究: 研究模型(Study Model):Newly formed pupae (<2 weeks) 配制方法(Formulation):20-hydroxyecdysone was dissolved in 100% ethanol and then diluted to 1 μg/μl in 10% alcohol for the following injection. 实验方法(Assay):Pupae were first surface sterilized by 1% bleach and washed by sterilized water. After drying, each pupa was penetrated by a fine metal microinjection needle and then syringed with 0.2 μl 20E solution (World Precision Instruments, FL). The treated pupae were placed in an incubator with a temperature of 22 ± 1°C and a photoperiod of 14L:10D. After 20E treatment, individualsat different time-points including 1, 2, and 5 days post-injection (DPI) were sampled,and individuals treated with 0.2 μl carrier solution (10% alcohol) serve as a control group. |