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Membrane lipid environment: Potential modulation of chemokine receptor function

机译:膜脂质环境:趋化因子受体功能的潜在调节

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摘要

Migration of leukocytes is typically mediated by G protein-coupled receptors (GPCRs) upon activation by specific ligands that range from small peptides, chemokines to a variety of lipidic molecules. The heptahelical receptors are highly dynamic structures and the signaling efficiency largely depends on the discrete contact with the ligand. In addition, several allosteric modulators of receptor activity have been reported, which do not induce migration by themselves. Another important mechanism modulating the activity of GPCRs is their local environment. Not only the membrane lipid composition influences the activity, but also direct binding of lipids, in particular cholesterol, was shown to alter receptor signaling properties. Recent findings indicate that also chemokine receptor activity is modulated by membrane lipids. In this short review we discuss this new paradigm and potential consequences for chemokine-induced migration.
机译:白细胞的迁移通常由G蛋白偶联受体(GPCR)介导,所述受体在通过从小肽,趋化因子到各种脂质分子的特定配体激活。 渗透基受体是高度动态的结构,并且信号效率在很大程度上取决于与配体的离散接触。 此外,已经报道了几种受体活性的变构调节剂,其不会自行促进迁移。 调制GPCR的活动的另一个重要机制是它们的当地环境。 不仅膜脂肪组合物影响活性,而且还显示出脂质的直接结合,特别是胆固醇,以改变受体信号传导性能。 最近的发现表明,还通过膜脂质调节趋化因子受体活性。 在这次简短的评论中,我们讨论了这种新的范式和对趋化因素诱导的迁移的潜在后果。

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