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C-Terminal modification of polytheonamide B uncouples its dual functions in MCF-7 cancer cells.

Polytheonamide B (1) is an exceptionally large peptide that forms a transmembrane ion channel. The potent cytotoxicity of 1 against MCF-7 cancer cells originates from its two ion transport functions.… Click to show full abstract

Polytheonamide B (1) is an exceptionally large peptide that forms a transmembrane ion channel. The potent cytotoxicity of 1 against MCF-7 cancer cells originates from its two ion transport functions. Compound 1 depolarizes the plasma membrane and neutralizes acidic lysosomes. Here, we describe how we uncoupled these functions by designing and synthesizing new analogues of 1.

Keywords: modification polytheonamide; mcf cancer; cancer cells; terminal modification

Journal Title: Chemical communications
Year Published: 2023

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