Abstract

Aldehyde dehydrogenase (ALDH) is overexpressed in some subpopulations of stem cells and cancer cells. We have designed and synthesized the first selective fluorescent probe for class 3 ALDH (ALDH3A1). This probe enabled the visualization of ALDH3A1-positive cells by fluorescence microscopy as well as flow-cytometric isolation of ALDH3A1-positive viable cells from a human Caucasian esophageal squamous cell line (OE21) that heterogeneously expresses ALDH3A1.

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