Near‐Infrared Optogenetic Genome Engineering Based on Photon‐Upconversion Hydrogels
作者:Yoichi Sasaki、Mio Oshikawa、Pankaj Bharmoria、Hironori Kouno、Akiko Hayashi‐Takagi、Moritoshi Sato、Itsuki Ajioka、Nobuhiro Yanai、Nobuo Kimizuka
DOI:10.1002/anie.201911025
日期:2019.12.2
complex is covalently linked with energy-pooling acceptor chromophores, which significantly elongates the donor triplet lifetime. The donor and acceptor are solubilized in hydrogels formed from biocompatible Pluronic F127 micelles, and heat treatment endows the excited triplets in the hydrogel with remarkable oxygen tolerance. Combined with photoactivatable Cre recombinase technology, NIR-light stimulation
从近红外(NIR)光到可见光的光子上转换(UC)使深部组织中发生了光遗传学操作。但是,用于近红外光遗传学的材料仅限于无机UC纳米颗粒。在此,报道了使用生物相容的有机TTA-UC水凝胶的NIR光触发的光遗传学。为了即使在高粘性水凝胶基质中也能实现三重态敏化,将近红外吸收复合物与能量池受体生色团共价连接,从而显着延长了供体的三重态寿命。供体和受体溶解在由生物相容性Pluronic F127胶束形成的水凝胶中,热处理赋予水凝胶中激发的三重态具有显着的耐氧性。结合可光激活的Cre重组酶技术,