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Pro-GA, a Novel Inhibitor of γ-Glutamylcyclotransferase, Suppresses Human Bladder Cancer Cell Growth

Pro-GA, a Novel Inhibitor of γ-Glutamylcyclotransferase, Suppresses Human Bladder Cancer Cell Growth

Anticancer Research 39(4): 1893-1898

γ-Glutamylcyclotransferase (GGCT), a key enzyme involved in glutathione metabolism, catalyzes a specific reaction that generates 5-oxoproline and free amino acids from the γ-glutamyl peptide. Inhibition of GGCT is a promising therapeutic strategy for the treatment of various cancers. Immuno-histochemistry was used to evaluate GGCT expression in bladder tumors. The growth inhibitory effect of pro-GA, a novel GGCT inhibitor, in the presence or absence of mitomycin C (MMC) was assessed in three distinct bladder cancer cell lines. Over half of the clinical bladder tumor samples overexpressed GGCT. Pro-GA reduced the growth of all bladder cancer cell lines in a dose-dependent manner, and increased the anti-tumor effect of MMC. Inhibition of GGCT using pro-GA provides a novel therapeutic strategy for the treatment of bladder cancers.

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Accession: 066662077

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PMID: 30952730

DOI: 10.21873/anticanres.13297

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