(-)-Epicatechin

(-)-Epicatechin (Epicatechin) 是一种 COX-1 的抑制剂,通过阻断 NF-κB 的 p65 亚基的核定位来抑制 IL-1β 诱导的 iNOS 表达。

CAS号

490-46-0

分子式

C15H14O6

主要靶点

Endogenous Metabolite|COX|Ferroptosis

仅限科研使用

Cat No : CM00724

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Synonyms

Epicatechin|表儿茶素|L-Epicatechin|(-)-Epicatechol|表儿茶精



产品信息

(-)-Epicatechin is an inhibitor of cyclooxygenase-1 (COX-1), inhibiting the IL-1β-induced expression of iNOS by blocking the nuclear localization of the p65 subunit of NF-κB.

CAS号 490-46-0
分子式 C15H14O6
主要靶点 Endogenous Metabolite|COX|Ferroptosis
主要通路 神经科学|代谢|凋亡|免疫与炎症
分子量 290.28
纯度 98.92%, 此纯度可做参考,具体纯度与批次有关系,可咨询客服
储存条件 Powder: -20°C for 3 years | In solvent: -80°C for 1 year
别名 Epicatechin|表儿茶素|L-Epicatechin|(-)-Epicatechol|表儿茶精

靶点活性

COX-1:3.2 μM

体内活性

Aging has deleterious effects on modulators of muscle growth/differentiation, the consumption of modest amounts of the flavanol (?)-epicatechin can partially reverse these changes. In mice, myostatin and senescence-associated β-galactosidase levels increase with aging, while those of follistatin and Myf5 decrease. (?)-Epicatechin decreases myostatin and β-galactosidase and increases levels of markers of muscle growth. In humans, myostatin and β-galactosidase increase with aging while follistatin, MyoD and myogenin decrease. Treatment for 7 days with (?)-epicatechin increases hand grip strength and the ratio of plasma follistatin/myostatin[1]. Low-dose (?)-epicatechin treatment resulted in significant increases in skeletal muscle capillarity, mitochondrial biogenesis, and oxidative enzyme activity, which corresponded to lower muscle fatigue and higher endurance capacity when compared to the placebo group. (?)-epicatechin may potentially regulate the protein expression between angiogenic and antiangiogenic factors, such as VEGF-A and TSP-1, respectively[3].

体外活性

(-)-Epicatechin stimulates mitochondrial respiration and oxygen consumption in Panc-1 cells. Human normal fibroblasts are not affected. (-)-Epicatechin sensitizes Panc-1, U87, and MIA PaCa-2 cells with an average radiation enhancement factor (REF) of 1.7, 1.5, and 1.2, respectively. (-)-Epicatechin does not sensitize normal fibroblast cells to ionizing radiation with a REF of 0.9, suggesting cancer cell selectivity. (-)-Epicatechin enhances Chk2 phosphorylation and p21 induction when combined with radiation in cancer, but not normal cells[2].

溶解度

H2O:<1 mg/mL,DMSO:54 mg/mL (186 mM),Ethanol:<1 mg/mL

细胞实验

Panc-1 cells are seeded into T-150 flasks and on the next day, cells are treated with different concentrations of (-)-epicatechin for 1 h, then harvested and solubilized in 10 mM HEPES (pH 7.4), 40 mM KCl, 1%Tween-20, 1 μM oligomycin, 1 mM PMSF,10 mM KF, 2 mM EGTA, and 1 mM Na3VO4. COX activity is measured in the presence of 20 mM ascorbate and 200 μM substrate cytochrome c from cow heart.(Only for Reference)

参考文献

1.Gutierrez-Salmean G, et al. J Nutr Biochem. 2014, 25(1):91-4.
2.Elbaz HA, et al. PLoS One. 2014, 9(2):e88322.
3.Hüttemann M, et al. FASEB J. 2012, 26(4):1413-22.
4.Jang S A, Hwang Y H, Kim T, et al. Anti-Osteoporotic and Anti-Adipogenic Effects of the Water Extract of Drynaria roosii Nakaike in Ovariectomized Mice Fed a High-Fat Diet[J]. Molecules. 2019, 24(17): 3051.
5.Shim K S, Hwang Y H, Jang S A, et al. Ethanol Extract of Amomum tsao-ko Ameliorates Ovariectomy-Induced Trabecular Loss and Fat Accumulation[J]. Molecules. 2021, 26(4): 784.
6.Shim K S, Hwang Y H, Jang S A, et al. . Water Extract of Lysimachia christinae Inhibits Trabecular Bone Loss and Fat Accumulation in Ovariectomized Mice[J]. Nutrients.  2020, 12(7): 1927.

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