Powder: -20°C for 3 years | In solvent: -80°C for 2 years
Betulin 是从桦树树皮中分离出来的一种天然三萜，是 SREBP 抑制剂。
| 产品描述 | Betulin (lup-20(29)-ene-3β, 28-diol) is an abundant, naturally occurring triterpene. It is commonly isolated from the bark of birch trees where it forms up to 30% of the dry weight of the extractive and is found in birch sap as well. |
| 靶点活性 | SREBP:14.5 μM |
| 体外活性 | Betulin (BE) displays a broad spectrum of biological and pharmacological properties, among which the anticancer and chemopreventive activity attract most of the attention. BE has been shown to elicit anticancer properties by inhibiting cancer cells growth. BE has exhibited quite a different range of its antiproliferative activity, depending on cancer cells type, from a weak inhibition of cell proliferation in human erythroleukaemia cell line (K562) to a strong inhibition in human neuroblastoma cells (SK-N-AS), where the effect has been most pronounced. Moreover, BE has also been found to express significant cytotoxicity against primary cancer cells cultures isolated from tumour samples obtained from ovarian, cervical carcinoma, and glioblastoma patients, where the IC50 values have ranged from 2.8 to 3.4 μM, being significantly lower, when compared with established cell lines[1]. The cytotoxic activity of crude birch bark extract and purified betulin and betulinic acid towards human gastric carcinoma (EPG85-257) and human pancreatic carcinoma (EPP85-181) drug-sensitive and drug-resistant (daunorubicin and mitoxantrone) cell lines are compared. Significant differences in sensitivity between cell lines depending on the compound used are shown, suggesting that both betulin and betulinic acid can be considered as a promising leads in the treatment of cancer[2]. |
| 体内活性 | Betulin could improve glucose intolerance and modify basal learning performance. Treatment with betulin significantly restores SOD activity and decreased MDA content in hippocampus. Furthermore, Betulin significantly reduces the contents of inflammatory cytokines in serum and hippocampus. Furthermore, administration of BE effectively upregulated the expressions of Nrf2, HO-1 and blocked the phosphorylations of IκB, NF-κB. In summary, BE might exhibit protective effect on cognitive decline in STZ-induced diabetic rats through HO-1/Nrf-2/ NF-κB pathway[3]. |
| 细胞实验 | Chemoresistance is tested using a proliferation assay based on sulphorhodamine B staining. Briefly, 800 cells per well are seeded in triplicate in 96-well plates. After attachment for 24 h, substances are added in dilution series for a 5-day incubation, before SRB staining is performed. Incubation is terminated by replacing the medium with 10% trichloroacetic acid, followed by further incubation at 4°C for 1h. Subsequently, the plates are ished five times with water and stained by adding 100 μL 0.4% SRB in 1% acetic acid for 10 min at room temperature. Ishing the plates five times with 1% acetic acid eliminated unbound dye. After air-drying and re-solubization of the protein bound dye in 10 mM Tris-HCl (pH=8.0), absorbance is read at 562 nm[2]. |
| 别名 | Trochol, betulinol, 桦木醇, Betulol, betuline, betulinic alcohol, 白桦脂醇 |
| 分子量 | 442.72 |
| 分子式 | C30H50O2 |
| CAS No. | 473-98-3 |
Powder: -20°C for 3 years | In solvent: -80°C for 2 years
DMSO: <4.43 mg/mL (10 mM)
( < 1 mg/mL refers to the product slightly soluble or insoluble )
参考文献文献引用
剂量换算对于不同动物的给药剂量换算，您也可以参考 更多...
体内实验配液计算器请在以下方框中输入您的动物实验信息后点击计算，可以得到母液配置方法和体内配方的制备方法： 比如您的给药剂量是10 mg/kg，每只动物体重20 g，给药体积100 μL，一共给药动物10 只，您使用的配方为5% DMSO+30% PEG300+5% Tween 80+60% ddH2O。那么您的工作液浓度为2 mg/mL。
母液配置方法：2 mg 药物溶于 50 μL DMSO (母液浓度为 40 mg/mL)， 如您需要配置的浓度超过该产品的溶解度，请先与我们联系。
体内配方的制备方法：取 50 μL DMSO 主液，加入 300 μL PEG300， 混匀澄清，再加 50 μL Tween 80，混匀澄清，再加 600 μL ddH2O, 混匀澄清。
计算器bottom
您可能有的问题的答案可以在抑制剂处理说明中找到，包括如何准备库存溶液，如何存储产品，以及基于细胞的分析和动物实验需要特别注意的问题。
Betulin 473-98-3 Apoptosis Metabolism Endogenous Metabolite Fatty Acid Synthase Lipid Trochol Fatty Acid Synthase (FASN) inhibit betulinol 桦木醇 Inhibitor Betulol betuline betulinic alcohol 白桦脂醇 inhibitor
沪公网安备 31010602006700号
