Journal
BIOCONJUGATE CHEMISTRY
Volume 20, Issue 10, Pages 1836-1842Publisher
AMER CHEMICAL SOC
DOI: 10.1021/bc900207k
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Funding
- Canadian Institute of Health Research
- Ontario Institute for Cancer Research
- Government of Ontario
- Canadian Cancer Society Research Institute
- Joey and Toby Tanenbaum/Brazilian Ball Chair in Prostate Cancer Research
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We report the proof-of-principle concept for zipper. molecular beacons (ZMB) comprising an asymmetrical polyarginine/polyglutamate electrostatic zipper hairpin-linked fluorophore-quencher pair. The objective is to balance maximal quenching efficiency and optimal two-step activation (protease cleavage/zipper dissociation), while enhancing target cell uptake. This strategy also, eilminates the peptide sequence dependence of conventional protease beacons. This ZMB concept is a generalizable approach to improve the functionality of a wide range of diagnostic/therapeutic probes through a simple switching of substrate sequences.
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