Peptide-Induced AIEgen Self-Assembly: A New Strategy to Realize Highly Sensitive Fluorescent Light-Up Probes
作者:Aitian Han、Huaimin Wang、Ryan T. K. Kwok、Shenglu Ji、Jun Li、Deling Kong、Ben Zhong Tang、Bin Liu、Zhimou Yang、Dan Ding
DOI:10.1021/acs.analchem.6b00023
日期:2016.4.5
Fluorescent light-up probes with aggregation-induced emission (AIE) characteristics have recently attracted great research interest due to their intelligent fluorescence activation mechanism and excellent photobleaching resistance. In this work, we report a new, simple, and generic strategy to design and prepare highly sensitive AIE fluorescent light-up bioprobe through facile incorporation of a self-assembling
具有聚集诱导发射(AIE)特性的荧光发光探针由于其智能的荧光激活机制和出色的抗光漂白性,最近引起了极大的研究兴趣。在这项工作中,我们报告了一种新的,简单的,通用的策略,可以通过在识别元件和AIE发光剂(AIEgen)之间轻松整合自组装肽序列GFFY来设计和制备高灵敏度的AIE荧光发光生物探针。生物探针响应靶标后,肽GFFY能够诱导AIEgens的有序自组装,产生紧密和紧密的分子间空间相互作用,从而限制AIEgens的分子内运动,从而实现出色的信号输出。使用两个概念验证,我们已经证明,与没有GFFY诱导的自组装的相比,自组装的掺有肽的AIE发光探针在感应溶液和癌细胞中的相应靶标方面显示出更高的灵敏度。以TPE-GFFYK(DVEDEE-Ac)探针为例,在caspase-3检测中TPE-GFFYK(DVEDEE-Ac)的检测限可低至0.54 pM,远低于TPE-GFFYK(DVEDEE-Ac)的检测限。