Phagocytosis of wild-type Legionella pneumophila occurs through a wortmannin-insensitive pathway. Academic Article uri icon

Overview

abstract

  • Wild-type Legionella pneumophila grows in human macrophages within a replicative phagosome, avoiding lysosomal fusion, while nonreplicative mutants are killed in lysosomes. Wortmannin, a phosphatidylinositol 3-kinase (PI3K) inhibitor, blocks phagocytosis of an avirulent mutant, but not of wild-type L. pneumophila, without affecting membrane ruffling and actin polymerization. These results show that wild-type and mutant Legionella strains use different entry pathways. They suggest that PI3Ks are involved in phagocytosis of an avirulent L. pneumophila mutant and regulate the ability of microorganisms to generate a replicative phagosome.

publication date

  • August 1, 2001

Research

keywords

  • Androstadienes
  • Legionella pneumophila
  • Phagocytosis
  • Phosphoinositide-3 Kinase Inhibitors

Identity

PubMed Central ID

  • PMC98612

Scopus Document Identifier

  • 0034911972

PubMed ID

  • 11447198

Additional Document Info

volume

  • 69

issue

  • 8