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September 2017

Vendredi

04/06/2021
11h

Visio

Séminaire Externe

« Epigenetics and genome gymnastics : A Polycomb complex with dual substrate specificity controls transposable elements in Paramecium »

Sandra DUHARCOURT (Institut Jacques Monod)                     
Contact : Marie Delattre

Lundi 07/06/2021
11h

Visio

Séminaire Externe

 

« Spatial coordination of division, growth and differentiation in plant cells »

 

David BOUCHEZ (IJPB INRA Versailles, France)
Host : Marie Cécile Caillaud
 

Lundi 14/06/2021
15H

Visio

Séminaire Externe

" Neighbors help those who help themselves - a story of bone regeneration in zebrafish"

Lundi 21/06/2021
11H00

Visio

Séminaire Externe

« Assimilate partitioning and metabolic flux control in oilseeds and cereal grains »

Hardy ROLLETSCHEK (Leibniz Institute of Plant Genetics and Crop Plant Research, Germany)
Host : Yannick Fierlej
Lundi 26/06/2021
11H00

Salle de conf s/sol IBCP

Séminaire externe
 

« The strategy allowing E. coli to survive within macrophages:  mixing single cell phenotypic heterogeneity and collective behavior »
Olivier ESPELI (Collège de France, Paris)   
Host: C. Grangeasse
 
Adherent Invasive Escherichia coli (AIEC) strains recovered from Crohn's disease lesions survive and multiply within macrophage’s phagolysosomes, an environment that prevents commensal E. coli multiplication. We use single-cell analysis, genetic dissection, genomic assays and mathematical models to monitor the growth status and cell cycle regulation of intracellular AIEC. We observed that AIEC, may replicate or undergo non-growing phenotypic switches. These switches result from successive stringent and SOS response inductions. Although non-growing bacteria benefit from protection to stresses, they are not sufficient to maintain AIEC’s niche on the long-term. To form intracellular bacterial communities, where replication is possible, AIEC need to express pathogeny islands and subsequently build a biofilm like matrix. We observed the persistence of these biofilmed communities for several days and their transfer from  dying cells to new macrophages. Therefore, we propose that intracellular communities provide a reservoir for bacteria and contribute to chronic inflammation.

Lundi 28/06/2021

15H00

Visio

Séminaire externe

" Investigating the regulation of larval settlement in marine invertebrates "

Elizabeth WILLIAMS (Univ. Exeter, UK)

lien zoom: https://zoom.us/j/94598228084?pwd=cWlXOEMrbEdVekE5R21Mc1lrdEd1Zz09

Lundi 28/06/2021

11h

Visio

Séminaire externe

« TBA »
 
Guido GROSSMAN (Heidelberg University, Germany)
Host : Carlos Galvan Ampudia
 

 

 


 
 
 
 
 
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