A bacterial protease depletes c-MYC and increases survival in mouse models of bladder and colon cancer

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4 Citations (SciVal)

Abstract

Is the oncogene MYC upregulated or hyperactive? In the majority of human cancers, finding agents that target c-MYC has proved difficult. Here we report specific bacterial effector molecules that inhibit cellular MYC (c-MYC) in human cells. We show that uropathogenic Escherichia coli (UPEC) degrade the c-MYC protein and attenuate MYC expression in both human cells and animal tissues. c-MYC protein was rapidly degraded by both cell-free bacterial lysates and the purified bacterial protease Lon. In mice, intravesical or peroral delivery of Lon protease delayed tumor progression and increased survival in MYC-dependent bladder and colon cancer models, respectively. These results suggest that bacteria have evolved strategies to control c-MYC tissue levels in the host and that the Lon protease shows promise for therapeutic targeting of c-MYC in cancer.

Original languageEnglish
Pages (from-to)754–764
Number of pages11
JournalNature Biotechnology
Volume39
Issue number6
Early online date2021 Feb 11
DOIs
Publication statusPublished - 2021 Jun 1

Subject classification (UKÄ)

  • Microbiology in the medical area

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