Omega-3 Fatty Acids Modulate TRPV4 Function through Plasma Membrane Remodeling.

Omega-3 Fatty Acids Modulate TRPV4 Function through Plasma Membrane Remodeling.
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DOI:
10.1016/j.celrep.2017.09.029
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发表时间:
2017-10-03
期刊:
影响因子:
8.8
通讯作者:
Cordero-Morales JF
Cordero-Morales JF
中科院分区:
生物学1区
文献类型:
--
作者:
Caires R;Sierra-Valdez FJ;Millet JRM;Herwig JD;Roan E;Vásquez V;Cordero-Morales JF

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鱼油中的ω-3多不饱和脂肪酸(PUFA)的饮食消费已知可以改善血管反应;然而,它们的分子靶点在很大程度上仍然未知。TRPV4通道的激活与内皮依赖性血管舒张有关。在这里,我们通过精确操纵秀丽隐杆线虫中的脂肪酸含量来研究ω-3 PUFAs对TRPV 4功能的贡献。通过遗传剥夺蠕虫的PUFA,我们确定ω-3脂肪酸的代谢是TRPV 4活性所必需的。功能、脂质代谢组学和生物物理学分析表明,ω-3 PUFA增强人内皮细胞中TRPV 4的功能,并支持脂质代谢和膜重塑调节细胞反应性的假设。我们提出了一个模型,其中类花生酸的环氧基团的位置增加膜流动性,并通过增加TRPV4通道的活性影响内皮细胞的反应。ω-3 PUFA样分子可能是靶向TRPV 4降低全身血压的可行的抗高血压药物。
Dietary consumption of ω-3 polyunsaturated fatty acids (PUFAs), present in fish oils, is known to improve vascular response; however, their molecular targets remain largely unknown. Activation of the TRPV4 channel has been implicated in endothelium-dependent vasorelaxation. Here, we studied the contribution of ω-3 PUFAs to TRPV4 function by precisely manipulating the fatty acid content in Caenorhabditis elegans. By genetically depriving the worms of PUFAs, we determined that the metabolism of ω-3 fatty acids is required for TRPV4 activity. Functional, lipid metabolome, and biophysical analyses demonstrated that ω-3 PUFAs enhance TRPV4 function in human endothelial cells and support the hypothesis that lipid metabolism and membrane remodeling regulate cell reactivity. We propose a model whereby the eicosanoid’s epoxide group location increases membrane fluidity and influences endothelial cell response by increasing TRPV4 channels activity. ω-3 PUFA-like molecules might be viable antihypertensive agents for targeting TRPV4 to reduce systemic blood pressure.
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