Role of lipid rafts in E-cadherin- and HGF-R/met-mediated entry of Listeria monocytogenes into host cells - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Article Dans Une Revue Journal of Cell Biology Année : 2004

Role of lipid rafts in E-cadherin- and HGF-R/met-mediated entry of Listeria monocytogenes into host cells

Résumé

Listeria monocytogenes uptake by nonphagocytic cells is promoted by the bacterial invasion proteins internalin and InlB, which bind to their host receptors E-cadherin and hepatocyte growth factor receptor (HGF-R)/Met, respectively. Here, we present evidence that plasma membrane organization in lipid domains is critical for Listeria uptake. Cholesterol depletion by methyl-beta-cyclodextrin reversibly inhibited Listeria entry. Lipid raft markers, such as glycosylphosphatidylinositol-linked proteins, a myristoylated and palmitoylated peptide and the ganglioside GM1 were recruited at the bacterial entry site. We analyzed which molecular events require membrane cholesterol and found that the presence of E-cadherin in lipid domains was necessary for initial interaction with internalin to promote bacterial entry. In contrast, the initial interaction of InlB with HGF-R did not require membrane cholesterol, whereas downstream signaling leading to F-actin polymerization was cholesterol dependent. Our work, in addition to documenting for the first time the role of lipid rafts in Listeria entry, provides the first evidence that E-cadherin and HGF-R require lipid domain integrity for their full activity.

Dates et versions

hal-02679649 , version 1 (31-05-2020)

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Stéphanie Seveau, Hélène Bierne, Stéphanie Giroux, Marie-Christine Prévost, Pascale Cossart. Role of lipid rafts in E-cadherin- and HGF-R/met-mediated entry of Listeria monocytogenes into host cells. Journal of Cell Biology, 2004, 166 (5), pp.743-753. ⟨10.1083/jcb.200406078⟩. ⟨hal-02679649⟩

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