Juin 2021
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Vendredi 04/06/2021 Visio Séminaire Externe |
« Epigenetics and genome gymnastics : A Polycomb complex with dual substrate specificity controls transposable elements in Paramecium » | |
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Sandra DUHARCOURT (Institut Jacques Monod)
Contact : Marie Delattre
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Lundi 07/06/2021 Visio Séminaire Externe
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« Spatial coordination of division, growth and differentiation in plant cells » | |
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David BOUCHEZ (IJPB INRA Versailles, France)
Host : Marie Cécile Caillaud
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Lundi 14/06/2021 Visio Séminaire Externe |
" Neighbors help those who help themselves - a story of bone regeneration in zebrafish" | |
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Franziska KNOPF (TU Dresden)
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Lundi 21/06/2021 Visio Séminaire Externe |
« Assimilate partitioning and metabolic flux control in oilseeds and cereal grains » | |
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Hardy ROLLETSCHEK (Leibniz Institute of Plant Genetics and Crop Plant Research, Germany)
Host : Yannick Fierlej
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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 » | |
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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.
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Lundi 28/06/2021 15H00 Visio Séminaire externe |
" Investigating the regulation of larval settlement in marine invertebrates " | |
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Elizabeth WILLIAMS (Univ. Exeter, UK) lien zoom: https://zoom.us/j/94598228084?pwd=cWlXOEMrbEdVekE5R21Mc1lrdEd1Zz09 |
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Lundi 28/06/2021 11h Visio Séminaire externe |
« TBA » | |
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Guido GROSSMAN (Heidelberg University, Germany)
Host : Carlos Galvan Ampudia
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