已逝诺奖得主钱永健PNAS新研究成果

2016-10-27 王英 生物通

10月20日,美国国家科学院院刊PNAS刊发了已逝诺奖得主钱永健研究组的一项学术成果,题为“Laminin targeting of a peripheral nerve-highlighting peptide enables degenerated nerve visualization”。美国当地时间2016年8月24日,华裔诺贝尔化学家得主钱永健(Roger Y. Tsien)去世,享年6

10月20日,美国国家科学院院刊PNAS刊发了已逝诺奖得主钱永健研究组的一项学术成果,题为“Laminin targeting of a peripheral nerve-highlighting peptide enables degenerated nerve visualization”。
美国当地时间2016年8月24日,华裔诺贝尔化学家得主钱永健(Roger Y. Tsien)去世,享年64岁,他曾帮助科学家看到了以前从未想象过的东西。

钱永健是美国著名生物化学家,美国国家科学院院士、美国国家医学院院士、美国艺术与科学院院士,加州大学圣地亚哥生物化学及化学系教授。2008年,钱永健凭借绿色荧光蛋白的研究,与美国生物学家马丁沙尔菲、日本有机化学家兼海洋生物学家下村修,因发现和研究绿色荧光蛋白而共享了该年诺贝尔奖化学奖。

10月20日,美国国家科学院院刊PNAS刊发了钱永健研究组的一项学术成果,题为“Laminin targeting of a peripheral nerve-highlighting peptide enables degenerated nerve visualization”。荧光标记的神经结合肽NP41有望减少手术的神经损伤,并促进神经修复。临床转化依靠结合的靶标来评估潜在毒性和理解机制。为了识别靶标,该研究开发了一种受体捕获方法,可使我们能够进行共价标记和识别距离结合配体很近的蛋白质,最终研究将laminin-421和-211确定为NP41结合靶标。

以靶结合活性为基础对分子库进行筛选,通常被用来开发第一代化合物,但随后的靶标识别对于开发具有较高特异性亲和力和较低脱靶结合的改良化合物,是有速度限制的。荧光标记的神经结合肽NP41,可通过噬菌体展示技术被选择出来,可在体内突出加亮外周神经。神经突出加亮,有可能通过促进术中神经识别、减少意外神经切断以及促进受损的神经修复,而改善手术预后结果。

为了能够筛选分子靶标特异性的分子,用于更高的神经对比,识别潜在的毒性,科学家们一直都在寻找NP41的结合靶标。在这项研究中,研究人员利用配体邻近的光致氧化和一个改编版本的糖蛋白TRICEPS LRC,将细胞外基质蛋白laminin-421和-211确定为NP41的结合靶标。这个神经结合肽之前通过噬菌体展示技术得以确定,并被表明可在体内荧光标记神经,并提高手术辨识度,从而有可能减少医源性神经损伤。这一结果解释了NP41高光显示肉眼不可见的高度退化神经的惊人能力,这些神经缺乏髓鞘和轴突,但是包含Laminin丰富的细胞外基质。

原始出处:Heather L. Glasgow, Michael A. Whitney,Larry A. Gross.Laminin targeting of a peripheral nerve-highlighting peptide enables degenerated nerve visualization.PANS.November 20, 2016.

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    2017-01-20 drwjr
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    2016-11-08 amy0550
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    2016-11-01 大黑牛

    值得敬仰、钦佩!?

    0

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    2016-10-30 xyfg98

    谢谢分享!

    0

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