Cited by 227Escherichia coli research studiesBacterial Genetics and BiotechnologyToxin Mechanisms and Immunotoxins

Colibactin: More Than a New Bacterial Toxin

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Faïs, Tiphanie, Delmas, Julien, Barnich, Nicolas, Bonnet, Richard, Dalmasso, Guillaume·2018·Toxins

Abstract

Cyclomodulins are bacterial toxins that interfere with the eukaryotic cell cycle. A new cyclomodulin called colibactin, which is synthetized by the pks genomic island, was discovered in 2006. Despite many efforts, colibactin has not yet been purified, and its structure remains elusive. Interestingly, the pks island is found in members of the family Enterobacteriaceae (mainly Escherichia coli and Klebsiella pneumoniae) isolated from different origins, including from intestinal microbiota, septicaemia, newborn meningitis, and urinary tract infections. Colibactin-producing bacteria induce chromosomal instability and DNA damage in eukaryotic cells, which leads to senescence of epithelial cells and apoptosis of immune cells. The pks island is mainly observed in B2 phylogroup E. coli strains, which include extra-intestinal pathogenic E. coli strains, and pks E. coli are over-represented in biopsies isolated from colorectal cancer. In addition, pks E. coli bacteria increase the number of tumours in diverse colorectal cancer mouse models. Thus, colibactin could have a major impact on human health. In the present review, we will focus on the biological effects of colibactin, the distribution of the pks island, and summarize what is currently known about its synthesis and its structure.

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Authors
Faïs, T., Delmas, J., Barnich, N., Bonnet, R., & Dalmasso, G.
Affiliations
Inserm (FR)
Corresponding author
Bonnet, Richard
Venue
Toxins
Publisher
MDPI AG
Published
2018-04-10
Volume
10
Issue
4
Pages
151
ISSN
2072-6651 (ISSN-L)
OpenAlex
W2797154576
Cited by
227
References
87
Citations by year
2026: 21 · 2025: 21 · 2024: 29 · 2023: 21 · 2022: 37 · 2021: 42 · 2020: 28 · 2019: 20 · 2018: 7
FWCI
4.08
Type
journal article
Language
en
Open access
Locations
  • Toxins (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Institut National de la Santé et de la Recherche Médicale (USC-2018, U1071)
  • Institut National de la Recherche Agronomique (U1071, USC-2018)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Endocrinology › Escherichia coli research studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
  • Life Sciences › Immunology and Microbiology › Immunology › Toxin Mechanisms and Immunotoxins
Keywords
colibactin, Escherichia coli, Klebsiella pneumoniae, Enterobacteriaceae, chromosomal instability, DNA damage, immune cell apoptosis, colorectal cancer, tumor promotion, extraintestinal pathogenic Escherichia coli, bacterial toxins, structure elucidation
MeSH terms
Animals, Bacterial Toxins, Humans, Mutagens, Peptides, Genomic Islands, Polyketides

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