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© Research
Publication : Infection and immunity

Identifying parameters of host cell vulnerability during Salmonella infection by quantitative image analysis and modeling

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Infection and immunity - 30 Oct 2017

Voznica J, Gardella C, Belotserkovsky I, Dufour A, Enninga J, Stévenin V

Link to Pubmed [PMID] – 29084895

Infect. Immun. 2017 Oct;

Salmonella targets and enters epithelial cells at permissive entry sites: some cells are more likely to be infected than others. However, the parameters that lead to host cell heterogeneity are not known. Here, we quantitatively characterized host cell “vulnerability” towards Salmonella infection based on imaged parameters. We performed successive infections of the same host cell population followed by automated high-throughput microscopy and observed that infected cells have higher probability of being re-infected. Establishing a predictive model we identified two combined origins of host cell vulnerability: the pathogen-induced cellular vulnerability emerging from Salmonella uptake and persisting at later stage of the infection, and the host cell-inherent vulnerability. We linked the host cell inherent vulnerability with its morphological attributes such as the local cell crowding, and with host cell cholesterol content. This showed that the probability of Salmonella infection success can be forecast from morphological or molecular host cell parameters.

https://www.ncbi.nlm.nih.gov/pubmed/29084895