Improved detection of colibactin-induced mutations by genotoxic E. coli in organoids and colorectal cancer

Axel Rosendahl Huber, Cayetano Pleguezuelos-Manzano, Jens Puschhof, Joske Ubels, Charelle Boot, Aurelia Saftien, Mark Verheul, Laurianne T Trabut, Niels Groenen, Markus van Roosmalen, Kyanna S Ouyang, Henry Wood, Phil Quirke, Gerrit Meijer, Edwin Cuppen, Hans Clevers, Ruben van Boxtel

Research output: Contribution to journal/periodicalArticleScientificpeer-review

18 Citations (Scopus)

Abstract

Co-culture of intestinal organoids with a colibactin-producing pks+E. coli strain (EcC) revealed mutational signatures also found in colorectal cancer (CRC). E. coli Nissle 1917 (EcN) remains a commonly used probiotic, despite harboring the pks operon and inducing double strand DNA breaks. We determine the mutagenicity of EcN and three CRC-derived pks+E. coli strains with an analytical framework based on sequence characteristic of colibactin-induced mutations. All strains, including EcN, display varying levels of mutagenic activity. Furthermore, a machine learning approach attributing individual mutations to colibactin reveals that patients with colibactin-induced mutations are diagnosed at a younger age and that colibactin can induce a specific APC mutation. These approaches allow the sensitive detection of colibactin-induced mutations in ∼12% of CRC genomes and even in whole exome sequencing data, representing a crucial step toward pinpointing the mutagenic activity of distinct pks+E. coli strains.

Original languageEnglish
Pages (from-to)487-496.e6
JournalCancer Cell
Volume42
Issue number3
DOIs
Publication statusPublished - 11 Mar 2024

Keywords

  • Humans
  • Escherichia coli/genetics
  • Mutation
  • DNA Damage
  • Mutagens
  • Colorectal Neoplasms
  • Organoids
  • Peptides
  • Polyketides

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