Xanthohumol is one of the principal flavonoids isolated from hops, the inhibitor of diacylglycerol acetyltransferase (DGAT), COX-1 and COX-2, and shows anti-cancer and anti-angiogenic activities. Xanthohumol also has antiviral activity against bovine viral diarrhea virus (BVDV), rhinovirus, HSV-1, HSV-2 and cytomegalovirus (CMV).
IC50 & Target[1][2][3][4][5]
COX-1
COX-2
HSV-1
HSV-2
DGAT1
40 μM (IC50)
DGAT2
40 μM (IC50)
CMV
体外研究 (In Vitro)
Xanthohumol significantly attenuates ADP-induced blood platelet aggregation, and significantly reduces the expression of fibrinogen receptor (activated form of GPIIbIIIa) on platelets’ surface[1]. Xanthohumol (5-50 nM) reduces the frequency of spontaneously occurring Ca2+ sparks and Ca2+ waves in control myocytes and in cells subjected to Ca2+ overload caused by: (1) exposure to low K+ solutions, (2) periods of high frequency electrical stimulation, (3) exposures to isoproterenol or (4) caffeine. Xanthohumol (50-100 nM) reduces the rate of relaxation of electrically- or caffeine-triggered Ca2+ transients, without suppressing ICa, but this effect is small and reversed by isoproterenol at physiological temperatures. Xanthohumol also suppresses the Ca2+ content of the SR, and its rate of recirculation[2]. Treatment of endothelial cells with Xanthohumol leads to increased AMPK phosphorylation and activity. Functional studies using biochemical approaches confirm that AMPK mediates Xanthohumol anti-angiogenic activity. AMPK activation by Xanthohumol is mediated by CAMMKβ, but not LKB1. Analysis of the downstream mechanisms shows that Xanthohumol-induced AMPK activation reduces nitric oxide (NO) levels in endothelial cells by decreasing eNOS phosphorylation. Finally, AKT pathway is inactivated by Xanthohumol as part of its anti-angiogenic activity, but independently from AMPK, suggesting that these two signaling pathways proceed autonomously[3]. Xanthohumol significantly reduces cell viability and induces apoptosis via pro-caspase-3/8 cleavage and poly(ADP ribose) polymerase (PARP) degradation. Pro-caspase-9 cleavage, Bcl2 family expression changes, mitochondrial dysfunction, and intracellular ROS generation also participate in Xanthohumol-induced glioma cell death. Xanthohumol’s inhibition of the IGFBP2/AKT/Bcl2 pathway via miR-204-3p targeting plays a critical role in mediating glioma cell death[4].
上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.
Clinical Trial
分子量
354.40
Formula
C21H22O5
CAS 号
6754-58-1
运输条件
Room temperature in continental US; may vary elsewhere.
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
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参考文献
[1]. Luzak B, et al. Xanthohumol from hop cones (Humulus lupulus L.) prevents ADP-induced platelet reactivity. Arch Physiol Biochem. 2016 Nov 18:1-7
[2]. Arnaiz-Cot JJ, et al. Xanthohumol modulates calcium signaling in rat ventricular myocytes: Possible Antiarrhythmic properties. J Pharmacol Exp Ther. 2016 Nov 4. pii: jpet.116.236588
[3]. Gallo C, et al. Hop derived flavonoid xanthohumol inhibits endothelial cell functions via AMPK activation. Oncotarget. 2016 Aug 1
[4]. Chen PH, et al. The miR-204-3p-targeted IGFBP2 pathway is involved in xanthohumol-induced glioma cell apoptotic death. Neuropharmacology. 2016 Nov;110(Pt A):362-75.
[5]. Inokoshi J, et al. Expression of two human acyl-CoA:diacylglycerol acyltransferase isozymes in yeast and selectivity of microbial inhibitors toward the isozymes. J Antibiot (Tokyo). 2009;62(1):51-54.
[6]. Buckwold VE, et al. Antiviral activity of hop constituents against a series of DNA and RNA viruses. Antiviral Res. 2004 Jan;61(1):57-62.
Cell Assay [3]
In vitro cell proliferation/viability is measured by the MTT test at different time points. 1000 cells/well are plated into 96-multiwell plates in complete medium. Following adhesion, medium is replaced with fresh medium containing the different treatments or vehicle (DMSO in medium). Xanthohumol and EGCG are used in a concentration range from 2.5 to 40 μM, up to 96 hours. 3 hours before each time point, MTT reagent (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) is added to the wells and plates are incubated at 37°C. At the indicated time points, absorbance at 540 nm is then measured by a FLUOstar spectrophotometer.
上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.
参考文献
[1]. Luzak B, et al. Xanthohumol from hop cones (Humulus lupulus L.) prevents ADP-induced platelet reactivity. Arch Physiol Biochem. 2016 Nov 18:1-7
[2]. Arnaiz-Cot JJ, et al. Xanthohumol modulates calcium signaling in rat ventricular myocytes: Possible Antiarrhythmic properties. J Pharmacol Exp Ther. 2016 Nov 4. pii: jpet.116.236588
[3]. Gallo C, et al. Hop derived flavonoid xanthohumol inhibits endothelial cell functions via AMPK activation. Oncotarget. 2016 Aug 1
[4]. Chen PH, et al. The miR-204-3p-targeted IGFBP2 pathway is involved in xanthohumol-induced glioma cell apoptotic death. Neuropharmacology. 2016 Nov;110(Pt A):362-75.
[5]. Inokoshi J, et al. Expression of two human acyl-CoA:diacylglycerol acyltransferase isozymes in yeast and selectivity of microbial inhibitors toward the isozymes. J Antibiot (Tokyo). 2009;62(1):51-54.
[6]. Buckwold VE, et al. Antiviral activity of hop constituents against a series of DNA and RNA viruses. Antiviral Res. 2004 Jan;61(1):57-62.