Cancer-related γ-glutamyl cyclotransferase (GGCT) specifically converts γ-glutamyl amino acids (γ-Glu-Xaa) into pyroglutamate and the corresponding amino acids (Xaa). Here we report a novel GGCT fluorogenic probe "LISA-101" containing a masked O-acylated fluorophore "resorufin" on the side chain of the P amino acid (Xaa). Upon GGCT treatment, the P amino acid was liberated and spontaneously released the intact fluorophore. Thus, the fluorescence was regained. LISA-101 will expand the strategies for cancer studies.
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http://dx.doi.org/10.1039/c5ob00086f | DOI Listing |
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