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- Title
Bioorthogonal Turn-On Probe Based on Aggregation-Induced Emission Characteristics for Cancer Cell Imaging and Ablation.
- Authors
Yuan, Youyong; Xu, Shidang; Cheng, Xiamin; Cai, Xiaolei; Liu, Bin
- Abstract
Bioorthogonal turn-on probes have been widely utilized in visualizing various biological processes. Most of the currently available bioorthogonal turn-on probes are blue or green emissive fluorophores with azide or tetrazine as functional groups. Herein, we present an alternative strategy of designing bioorthogonal turn-on probes based on red-emissive fluorogens with aggregation-induced emission characteristics (AIEgens). The probe is water soluble and non-fluorescent due to the dissipation of energy through free molecular motion of the AIEgen, but the fluorescence is immediately turned on upon click reaction with azide-functionalized glycans on cancer cell surface. The fluorescence turn-on is ascribed to the restriction of molecular motion of AIEgen, which populates the radiative decay channel. Moreover, the AIEgen can generate reactive oxygen species (ROS) upon visible light ( λ=400-700 nm) irradiation, demonstrating its dual role as an imaging and phototherapeutic agent.
- Subjects
POSITRON emission tomography; CANCER cells; MEDICAL imaging systems; ABLATION techniques; FLUOROPHORES
- Publication
Angewandte Chemie International Edition, 2016, Vol 55, Issue 22, p6457
- ISSN
1433-7851
- Publication type
Article
- DOI
10.1002/anie.201601744