Cancer-associated SNPs in bacteria: lessons from Helicobacter pylori.
Trends Microbiol
; 2024 Mar 13.
Article
en En
| MEDLINE
| ID: mdl-38485609
ABSTRACT
Several single-nucleotide polymorphisms (SNPs) in human chromosomes are known to predispose to cancer. However, cancer-associated SNPs in bacterial pathogens were unknown until discovered in the stomach pathogen Helicobacter pylori. Those include an alanine-threonine polymorphism in the EPIYA-B phosphorylation motif of the injected effector protein CagA that affects cancer risk by modifying inflammatory responses and loss of host cell polarity. A serine-to-leucine change in serine protease HtrA is associated with boosted proteolytic cleavage of epithelial junction proteins and introduction of DNA double-strand breaks (DSBs) in host chromosomes, which co-operatively elicit malignant alterations. In addition, H. pylori genome-wide association studies (GWAS) identified several other SNPs potentially associated with increased gastric cancer (GC) risk. Here we discuss the clinical importance, evolutionary origin, and functional advantage of the H. pylori SNPs. These exciting new data highlight cancer-associated SNPs in bacteria, which should be explored in more detail in future studies.
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Base de datos:
MEDLINE
Idioma:
En
Revista:
Trends Microbiol
Asunto de la revista:
MICROBIOLOGIA
Año:
2024
Tipo del documento:
Article
País de afiliación:
Alemania