Abstract:
:Recent studies describe in detail the shifts in composition of human-associated polymicrobial communities from health to disease. However, the specific processes that drive the colonization and overgrowth of pathogens within these communities remain incompletely understood. We used in vitro culture systems and a disease-relevant mouse model to show that population size, which determines the availability of an endogenous diffusible small molecule, limits the growth, colonization, and in vivo virulence of the human oral pathogen Porphyromonas gingivalis. This bacterial pathogen overcomes the requirement for an endogenous cue by utilizing a cell-density dependent, growth-promoting, soluble molecule provided by the symbiotic early colonizer Veillonella parvula, but not produced by other commensals tested. Our work shows that exchange of cell-density-dependent diffusible cues between specific early and late colonizing species in a polymicrobial community drives microbial successions, pathogen colonization and disease development, representing a target process for manipulation of the microbiome towards the healthy state.
journal_name
Adipocytejournal_title
Adipocyteauthors
Wong AM,Patel TP,Altman EK,Tugarinov N,Trivellin G,Yanovski JAdoi
10.1080/21623945.2020.1861728subject
Has Abstractpub_date
2021-12-01 00:00:00pages
21-27issue
1eissn
2162-3945issn
2162-397Xjournal_volume
10pub_type
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