Antitumorigenic Properties of Omega-3 Endocannabinoid Epoxides.

Antitumorigenic Properties of Omega-3 Endocannabinoid Epoxides.
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DOI:
10.1021/acs.jmedchem.8b00243
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发表时间:
2018-07-12
影响因子:
7.3
通讯作者:
Das A
Das A
中科院分区:
医学1区
文献类型:
--
作者:
Roy J;Watson JE;Hong IS;Fan TM;Das A

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越来越多的研究将炎症与肿瘤进展联系起来。膳食中的omega-3脂肪酸,包括二十二碳六烯酸(DHA),已被证明通过转化为环氧化物代谢产物来抑制肿瘤生长。或者,DHA被酶作用转化为二十二碳六烯乙醇胺(DHEA),这是一种具有抗增殖活性的内源性大麻素。最近,我们报道了一类新型的同时含有乙醇胺和环氧化物的抗炎DHEA-环氧化物(EDP-EAs)。在此,我们在骨肉瘤模型中评价了EDP-EAS的抗肿瘤特性。首先,我们发现,与正常小鼠肺相比,转移肺中EDP-EAs增加了约80%。我们发现不同的EDP-EA区域异构体的凋亡和抗迁移能力存在显著差异,这部分是通过大麻素受体1(CB1)介导的。此外,我们还合成了最具促凋亡作用的区域异构体的衍生物。这些衍生物降低了对脂肪酸-酰胺水解酶的水解性,并增加了CB1的结合。总而言之,我们报道了一类在骨肉瘤中表现出抗血管生成、抗肿瘤和抗迁移特性的新型EDP-EAs。
Accumulating studies have linked inflammation to tumor progression. Dietary omega-3 fatty acids including docosahexaenoic acid (DHA) have been shown to suppress tumor growth through their conversion to epoxide metabolites. Alternatively, DHA is converted enzymatically into docosahexaenoylethanolamide (DHEA), an endocannabinoid with anti-proliferative activity. Recently, we reported a novel class of anti-inflammatory DHEA-epoxides (EDP-EAs) that contain both ethanolamide and epoxide moieties. Herein we evaluate the anti-tumorigenic properties of EDP-EAs in an osteosarcoma model. First, we show ~80% increase in EDP-EAs in metastatic lungs versus normal mouse lungs. We found significant differences in the apoptotic and anti-migratory potency of the different EDP-EA regioisomers, which are partly mediated through cannabinoid receptor 1 (CB1). Furthermore, we synthesized derivatives of the most pro-apoptotic regioisomer. These derivatives had reduced hydrolytic susceptibility to fatty acid-amide hydrolase and increased CB1 binding. Collectively, we report a novel class of EDP-EAs that exhibit anti-angiogenic, anti-tumorigenic and anti-migratory properties in osteosarcoma.
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