Marinopyrrole derivatives with sulfide spacers as selective disruptors of Mcl-1 binding to pro-apoptotic protein Bim.

Abstract:

:A series of novel marinopyrroles with sulfide and sulphone spacers were designed and synthesized. Their activity to disrupt the binding of the pro-apoptotic protein, Bim, to the pro-survival proteins, Mcl-1 and Bcl-xL, was evaluated using ELISA assays. Fluorescence-quenching (FQ) assays confirmed the direct binding of marinopyrroles to Mcl-1. Benzyl- and benzyl methoxy-containing sulfide derivatives 4 and 5 were highly potent dual Mcl-1/Bim and Bcl-xL/Bim disruptors (IC50 values of 600 and 700 nM), whereas carboxylate-containing sulfide derivative 9 exhibited 16.4-fold more selectivity for disrupting Mcl-1/Bim over Bcl-xL/Bim binding. In addition, a nonsymmetrical marinopyrrole 12 is as equally potent as the parent marinopyrrole A (1) for disrupting both Mcl-1/Bim and Bcl-xL/Bim binding. Some of the derivatives were also active in intact human breast cancer cells where they reduced the levels of Mcl-1, induced programd cell death (apoptosis) and inhibited cell proliferation.

journal_name

Mar Drugs

journal_title

Marine drugs

authors

Cheng C,Liu Y,Balasis ME,Garner TP,Li J,Simmons NL,Berndt N,Song H,Pan L,Qin Y,Nicolaou KC,Gavathiotis E,Sebti SM,Li R

doi

10.3390/md12084311

subject

Has Abstract

pub_date

2014-07-29 00:00:00

pages

4311-25

issue

8

issn

1660-3397

pii

md12084311

journal_volume

12

pub_type

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