title: A role for phosphoinositide 3-kinase in bacterial invasion.
abstract: Listeria monocytogenes is a bacterial pathogen that invades cultured nonphagocytic cells. Inhibitors and a dominant negative mutation were used to demonstrate that efficient entry requires the phosphoinositide (PI) 3-kinase p85alpha-p110. Infection with L. monocytogenes caused rapid increases in cellular amounts of PI(3, 4)P2 and PI(3,4,5)P3, indicating that invading bacteria stimulated PI 3-kinase activity. This stimulation required the bacterial protein InlB, host cell tyrosine phosphorylation, and association of p85alpha with one or more tyrosine-phosphorylated proteins. This role for PI 3-kinase in bacterial entry may have parallels in some endocytic events.
authors.affiliation: Unité des Interactions Bactéries-Cellules, Institut Pasteur, Paris, France.
authors.forename: K
authors.initials: K
authors.lastname: Ireton
authors.forename: B
authors.initials: B
authors.lastname: Payrastre
authors.forename: H
authors.initials: H
authors.lastname: Chap
authors.forename: W
authors.initials: W
authors.lastname: Ogawa
authors.forename: H
authors.initials: H
authors.lastname: Sakaue
authors.forename: M
authors.initials: M
authors.lastname: Kasuga
authors.forename: P
authors.initials: P
authors.lastname: Cossart
mesh_terms: D000730:Androstadienes / Q000494:pharmacology; D000818:Animals; D001426:Bacterial Proteins / Q000502:physiology; D002460:Cell Line; D002867:Chromones / Q000494:pharmacology; D015638:Cytochalasin D / Q000494:pharmacology; D004789:Enzyme Activation; D004791:Enzyme Inhibitors / Q000494:pharmacology; D019833:Genistein; D006801:Humans; D007529:Isoflavones / Q000494:pharmacology; D008089:Listeria monocytogenes / Q000201:enzymology* / Q000472:pathogenicity*; D008565:Membrane Proteins / Q000502:physiology; D009025:Morpholines / Q000494:pharmacology; D019869:Phosphatidylinositol 3-Kinases; D018129:Phosphatidylinositol Phosphates / Q000378:metabolism; D010750:Phosphoproteins / Q000378:metabolism; D010766:Phosphorylation; D017853:Phosphotransferases (Alcohol Group Acceptor) / Q000037:antagonists & inhibitors / Q000378:metabolism*; D019000:Phosphotyrosine / Q000378:metabolism; D014407:Tumor Cells, Cultured; D000077191:Wortmannin
chemical_list: D000730:Androstadienes; D001426:Bacterial Proteins; D002867:Chromones; D004791:Enzyme Inhibitors; D007529:Isoflavones; D008565:Membrane Proteins; D009025:Morpholines; D018129:Phosphatidylinositol Phosphates; D010750:Phosphoproteins; C095768:inlB protein, Listeria monocytogenes; C060974:phosphatidylinositol 3,4,5-triphosphate; C060980:phosphatidylinositol 3,4-diphosphate; C069761:internalin protein, Bacteria; D019000:Phosphotyrosine; D015638:Cytochalasin D; C085911:2-(4-morpholinyl)-8-phenyl-4H-1-benzopyran-4-one; D019833:Genistein; D019869:Phosphatidylinositol 3-Kinases; D017853:Phosphotransferases (Alcohol Group Acceptor); D000077191:Wortmannin