Using Genomic Deletion Mutants to Investigate Effector-Triggered Immunity During Legionella pneumophila Infection

Rachelia R. Wibawa, Pengfei Li, Kathleen McCaffrey, Elizabeth L. Hartland

Research output: Chapter in Book/Report/Conference proceedingChapter (Book)Otherpeer-review

Abstract

Legionella pneumophila is an intracellular bacterial pathogen that uses a type IV secretion system (T4SS), termed Dot/Icm, to secrete more than 330 virulence effector proteins into the infected host cell. Many Dot/Icm effectors are involved in biogenesis of the Legionella-containing vacuole (LCV), which allows intracellular bacterial replication in environmental amoebae and alveolar macrophages. Through their activity, some effectors trigger the mammalian host immune response in a phenomenon termed effector-triggered immunity (ETI). Here, we describe a protocol to create and use L. pneumophila genome deletion mutants to identify effector(s) that alter pro-inflammatory cytokine production and bacterial clearance in the lungs of mice.

Original languageEnglish
Title of host publicationEffector-Triggered Immunity
Subtitle of host publicationMethods and Protocols
EditorsThomas A. Kufer, Maria Kaparakis-Liaskos
Place of PublicationNew York NY USA
PublisherHumana Press
Chapter3
Pages23-41
Number of pages19
ISBN (Electronic)9781071624494
ISBN (Print)9781071624487
DOIs
Publication statusPublished - 2022

Publication series

NameMethods in Molecular Biology
Volume2523
ISSN (Print)1064-3745
ISSN (Electronic)1940-6029

Keywords

  • Effector-triggered immunity
  • In vivo infection
  • Legionella pneumophila
  • Mutagenesis
  • T4SS

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