Virus binding to a plasma membrane receptor triggers interleukin-1 alpha-mediated proinflammatory macrophage response in vivo.

Journal Article (Journal Article)

The recognition of viral components by host pattern-recognition receptors triggers the induction of the antiviral innate immune response. Toll-like receptor 9 (TLR9) and NLRP3 inflammasome were shown to be the principal specific sensors of viral double-stranded DNA. Here we present evidence that macrophages in vivo activated an innate immune response to a double-stranded DNA virus, adenovirus (Ad), independently of TLR9 or NLRP3 inflammasome. In response to Ad, macrophage-derived IL-1 alpha triggered IL-1RI-dependent production of a defined set of proinflammatory cytokines and chemokines. The IL-1 alpha-mediated response required a selective interaction of virus arginine-glycine-aspartic acid (RGD) motifs with macrophage beta(3) integrins. Thus, these data identify IL-1 alpha-IL-1RI as a key pathway allowing for the activation of proinflammatory responses to the virus, independently of its genomic nucleic acid recognition.

Full Text

Duke Authors

Cited Authors

  • Di Paolo, NC; Miao, EA; Iwakura, Y; Murali-Krishna, K; Aderem, A; Flavell, RA; Papayannopoulou, T; Shayakhmetov, DM

Published Date

  • July 17, 2009

Published In

Volume / Issue

  • 31 / 1

Start / End Page

  • 110 - 121

PubMed ID

  • 19576795

Pubmed Central ID

  • PMC2759279

Electronic International Standard Serial Number (EISSN)

  • 1097-4180

Digital Object Identifier (DOI)

  • 10.1016/j.immuni.2009.04.015


  • eng

Conference Location

  • United States