In vitro evaluation demonstrates selective inhibition of tumor-associated isoforms in human carbonic anhydrases, highlighting therapeutic potential against metastatic solid tumors.
Aim: A series of isocoumarin–chalcone hybrids were prepared and assays for the inhibition of four isoforms of human carbonic anhydrase (hCA; EC 4.2.1.1), hCA I, II, IX and XII. Materials & methods: Isocoumarin–chalcone hybrids were synthesized by condensing acetyl–isocoumarin with aromatic aldehydes. They did not significantly inhibit off-target cytosolic isoforms hCA I and II (KI >100 μM) but acted as low micromolar or submicromolar inhibitors for the tumor-associated isoforms hCA IX and XII. Results & conclusion: Our work provides insights into a new and scarcely investigated chemotype which provides interesting tumor-associated CA inhibitors, considering that some such derivatives like sulfonamide SLC-0111 are in advanced clinical trials for the management of metastatic advanced solid tumors.
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Önyılmaz et al. (2024) studied this question.
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