Project

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Name of Applicant : Eléa Paillares
Date of application : 24-09-2021
Unit : Bacterial Toxins
Location : Calmette-62-1ere etage-06
Phone : 06 69 38 33 70
@ Mail : elea.paillares@pasteur.fr
@ PI-Mail : emmanuel.lemichez@pasteur.fr

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Project context and summary :

Bacterial toxins can induce a wide range of life threatening diseases and are at risk of bioweapon development due to their extreme toxicity and ease of production. Some AB-like toxins exploit the host cell endocytic machinery to enter into the cell cytosol where they exert their poisoning effects. Host-targeted therapy involving the development of small molecules interfering with key vesicular trafficking components hijacked by bacterial toxins offers to counteract toxin action. We have identified the small compound C910, in a cell-based High-throughput screen (HTS) followed by orthogonal screens described in (Mahtal N et al., 2018), for its cell-protective activity against CNF1 toxin from pathogenic Escherichia coli, as well as diphtheria and Shiga toxins. Therefore, to characterize C910 mechanism of action and find its cellular target we have realized an siRNA wide-genome screening on primary human cells. This screening aims to find genes that can interfere with the trafficking of the CNF1 toxin.

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