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Reference type: Journal
Authors: Demir B, Lemberger MM, Panagiotopoulou M, Medina Rangel PX, Timur S, Hirsch T, Tse Sum Bui B, Wegener J, Haupt K
Article Title: Tracking Hyaluronan: Molecularly Imprinted Polymer Coated Carbon Dots for Cancer Cell Targeting and Imaging.
Publication date: 2018
Journal: ACS Applied Materials & Interfaces
Volume: 10
Issue: (4)
Page numbers: 3305-3313.
DOI: 10.1021/acsami.7b16225

Abstract: War against cancer constantly requires new affinity tools to selectively detect, localize, and quantify biomarkers for diagnosis or prognosis. Herein, carbon nanodots (CDs), an emerging class of fluorescent nanomaterials, coupled with molecularly imprinted polymers (MIPs), are employed as a biocompatible optical imaging tool for probing cancer biomarkers. First, N-doped CDs were prepared by hydrothermal synthesis using starch as carbon source and l-tryptophan as nitrogen atom provider to achieve a high quantum yield of 25.1 - 2%. The CDs have a typical size of ~3.2 nm and produce an intense fluorescence at 450 nm upon excitation with UV light. A MIP shell for specific recognition of glucuronic acid (GlcA) was then synthesized around the CDs, using the emission of the CDs as an internal light source for photopolymerization. GlcA is a substructure (epitope) of hyaluronan, a biomarker for certain cancers. The biotargeting and bioimaging of hyaluronan on fixated human cervical cancer cells using CD core-MIP shell nanocomposites is demonstrated. Human keratinocytes were used as noncancerous reference cells and indeed, less staining was observed by the CD-MIP
Template and target information: glucuronic acid, GlcA, epitope, hyaluronan, cancer biomarker
Author keywords: cancer cell imaging, Carbon dot, Glucuronic acid, Hyaluronan, internal light source, molecularly imprinted polymer, synthetic antibody

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