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A Gcn5 and pCAF HAT inhibitor
CPTH6 is a thiazole derivative that inhibits the lysine acetyltransferase activity of Gcn5 and pCAF but not p300 or CBP. It blocks the acetylation of H3/H4 histones and α-tubulin in several leukemia cell lines. CPTH6 reduces cell viability, arresting cell cycling in the G0/G1 phase and inducing apoptosis. It impairs autophagy in a variety of tumor cell lines, at least in part by altering ATG7-mediated elongation of autophagosomal membranes.
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