ArticleChemical & biomedical imaging2026
Multiplexed Detection of Reactive Biomolecules via Chemoresponsive DNA Accumulation on Fluorescence-Encoded Beads.
Article in Chemical & biomedical imaging, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The multiplex analysis of reactive biomolecules is crucial in diagnostics and life science research. However, conventional methods using small-molecule-based fluorescent probes are limited in the number of simultaneously detectable targets because of the spectral overlap of their fluorescence wavelengths. Herein we present a sequencing-free multiplexed analysis platform using chemoresponsive DNA-based fluorescent probes. A target-responsive moiety was installed in the phosphate backbone of the probe to strategically destabilize the DNA duplex. Reaction with a target molecule such as hydrogen peroxide or nitroreductase cleaved this moiety, restoring duplex stability and thereby triggering the accumulation of fluorescent product DNAs on beads functionalized with a complementary sequence. By encoding beads with distinct fluorescence intensity ratios and sizes, we achieved the simultaneous and specific detection of multiple targets in a single sample. The system performed well even with complex biological samples. This modular "reaction-to-accumulation" strategy offers a generalizable approach for developing DNA-based multiplex detection systems tailored to different target molecules.
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