Abstract

Dimeric β-carbolines are cytotoxic against multiple NSCLC cell lines, and we report herein our preliminary studies on the mechanism of action of these dimeric structures. Dimeric β-carboline 1, which is more potent than the corresponding monomer in NSCLC cell lines, is a lysosomotropic agent that inhibits autophagy and mediates cell death by apoptosis, upregulating the pro-apoptotic BH3-only protein PUMA (p53 upregulated modulator of apoptosis) in a dose dependent manner.

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