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【Nature Materials编译】纳米材料变得更“聪明”
Genetically engineered protein in hydrogels tailors stimuli-responsive characteristics
Nanomaterials get smart
来源
Nature Materials 4, 298; April 2005
http://www.nature.com/cgi-taf/DynaPage.taf?file=/nmat/journal/v4/n4/abs/nmat1352.html&dynoptions=doi1114353027
news原文
A desirable characteristic of future 'intelligent' nanomaterials is the ability to respond to a stimulus by performing a mechanical action. This ability already exists in nature: certain proteins can undergo a conformational change in response to an appropriate stimulus. In Nature Materials, Sylvia Daunert and colleagues report a new material with a stimulus-responsive action mechanism tethered to a biological recognition element. The material comprises a hydrogel that swells in a three-stage process. Swelling is triggered by both ligand sensing and the shape change of genetically engineered proteins. Potential applications include microfluidics and miniaturized drug-delivery systems.
编译
未来“智能”纳米材料的一个特征就是具有反应于机械应力刺激的能力。这个能力在自然界中就有存在：几种蛋白质可以对适当的刺激改变构型以适应这种变化。在Nature Materials杂志发表的文章中, Sylvia Daunert和同事们报道了一个新材料，其具有一个刺激反应性机件可以系到生物识别元件上，这个材料包含一个三级膨胀方式的水凝胶。膨胀可以通过配体传感器，也可以通过遗传基因工程蛋白的外形变化启动。这个材料潜在的用途包括微流体和微型化药物传递系统。 [标签:content1][标签:content2]
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作者:admin@医学,生命科学 2011-03-28 05:14
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