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熊果酸 促销  ≥98%(HPLC),分析标准品

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包装规格：20mg in glass bottle
产品简介：一天然三萜羧酸化合物，具有预防和抗癌活性。
溶解性：DMSO :33.33 mg/mL (72.98 mM; 超声助溶)
储备液保存：-80°C, 6 months -20°C, 1 month
体内实验：1、请依序添加每种溶剂： 50% HP-β-CD in saline Solubility: 6.67 mg/mL (14.60 mM); Suspended solution; Need ultrasonic 2、请依序添加每种溶剂： 10% DMSO→90% corn oil Solubility: ≥ 2.5 mg/mL (5.47 mM); Clear solution 此方案可获得 ≥ 2.5 mg/mL（饱和度未知）的澄清溶液，此方案实验周期在半个月以上的动物实验酌情使用。 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（工作液配制过程中，可通过加热/涡旋/超声等物理方式辅助溶解）。 ＜1mg/ml表示微溶或不溶。 普西唐提供的所有化合物浓度为内部测试所得，实际溶液度可能与公布值有所偏差，属于正常的批间细微差异现象。 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。
体外研究：Ursolic acid induces phosphorylation of AMP-activated protein kinase alpha (AMPKα) and suppressed the protein expression of DNA methyltransferase 1 (DNMT1) in the dose-dependent manner. The combination of Ursolic acid (0.5 μM) and Leucine (10 μM) prove to be the most effective in promoting myogenic differentiation. The combination of Ursolic acid and Leucine significantly increase CK activity than treatment with either agent alone. The level of myosin heavy chain, a myogenic differentiation marker protein, is also enhanced by the combination of Ursolic acid and Leucine. Ursolic acid efficiently induces apoptosis, possibly via the downregulation of B-cell lymphoma 2 (Bcl-2), the upregulation of Bcl-2-associated X protein and the proteolytic activation of caspase-3. Furthermore, the activation of p38 mitogen-activated protein kinase and c-Jun N-terminal kinase is increased by the administration of ursolic acid. In addition, Ursolic acid significantly suppresses the invasive phenotype of the SNU-484 cells and significantly decreases the expression of matrix metalloproteinase (MMP)-2. Ursolic acid (UA) potently induces the apoptosis of gastric cancer SGC-7901 cells. Further mechanistic studies revealed that the ROCK1/PTEN signaling pathway plays a critical role in Ursolic acid-mediated mitochondrial translocation of cofilin-1 and apoptosis.
体内研究：Ursolic acid treatment markedly improves the survival of septic rats, and attenuated CLP-induced lung injury, including reduction of lung wet/dry weight ratio, infiltration of leukocytes and proteins, myeloperoxidase activity, and malondialdehyde content. In addition, Ursolic acid significantly decreases the serum levels of tumor necrosis factor-α, interleukin-6, and interleukin-1β, inhibits the expression of inducible nitric oxide synthase and cyclooxygenase-2 in the lung, which are involved in the productions of nitric oxide and prostaglandin E2.
保存条件：2-8℃
注意事项：1、为了您的安全和健康，请穿实验服并戴一次性手套操作。 2、以上信息仅做参考交流之用。

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