Cell:药物疗效“因人而异”?基因突变“在作怪”!

2017-12-20 佚名 生物探索

与G蛋白偶联受体(GPCRs,目前最主要的药物靶标)有关的研究已经获得了5次诺贝尔奖。最近,来自美国的一个科学家小组又收获了关于GPCRs的一项新发现!

与G蛋白偶联受体(GPCRs,目前最主要的药物靶标)有关的研究已经获得了5次诺贝尔奖。最近,来自美国的一个科学家小组又收获了关于GPCRs的一项新发现!

12月14日,最新发表在Cell杂志上的这项研究中,来自美国哥本哈根大学和MRC分子生物学实验室等机构的科学家们通过挖掘现有的数据集,描绘出了“个体中GPCR药物靶点发生突变”的程度,并揭示了这些突变对药物疗效的影响。

GPCRs是人类基因组中最大的膜蛋白家族,在视觉、嗅觉、味觉以及神经传递等人类各项生理代谢活动过程中发挥着重要的作用。关于GPCR的研究极大改变了我们对生命活动的认识以及革新了现代医药研究。

在这项新研究中,科学家们首先利用来自“1,000 Genomes计划”(约2,500参与者)的全基因组测序数据和来自“ExAC计划”(超过60,000名参与者)的外显子组数据,分析了人类GPCR中的突变;然后,利用结构数据,分析了GPCRs中的关键位点,以揭示哪些突变更有可能改变药物的效果。

结果显示,平均有3%的人含有能够影响药物效果的突变GPCR受体。受体包含这类突变可能意味着,药物的疗效会降低,也可能意味着,药物将彻底不起作用,或者对患者产生不良影响。

论文的第一作者兼共同通讯作者Alexander Hauser解释道:“3%的受影响人群是指平均水平。对一些重要受体来说,受影响的人群要大得多。举例来说,就糖尿病药物靶点GLP1受体而言,相关突变发生在69%的人中。而对CNR2受体(药物通过靶向这一受体来说缓解化疗引发的恶性)来说,这一比例为86%。”

总结来说,作者们认为,个体间药物反应差异的存在和潜在影响是进一步研究这一领域的有力证据。同时,这些新发现也很好地证明了,为什么个性化医疗将是医学领域未来必然的发展方向。

原始出处:
Hauser AS,et al.Pharmacogenomics of GPCR Drug Targets.Cell. 2017 Dec 8. pii: S0092-8674(17)31384-3. 

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    2018-11-30 维他命
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    2017-12-20 天涯183

    非常好的文章.学习了

    0

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    2017-12-20 137****9095

    henhao

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    2017-12-20 139****0239

    henhao

    0

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