Pyogenic bacterial infections in humans with IRAK-4 deficiency

Capucine Picard, Anne Puel, Marion Bonnet, Cheng Lung Ku, Jacinta Bustamante, Kun Yang, Claire Soudais, Stéphanie Dupuis, Jacqueline Feinberg, Claire Fieschi, Carole Elbim, Remi Hitchcock, David Lammas, Graham Davies, Abdulaziz Al-Ghonaium, Hassan Al-Rayes, Sulaiman Al-Jumaah, Sami Al-Hajjar, Ibrahim Zaid Al-Mohsen, Husn H. FrayhaRajivi Rucker, Thomas R. Hawn, Alan Aderem, Haysam Tufenkeji, Soichi Haraguchi, Noorbibi K. Day, Robert A. Good, Marie Anne Gougerot-Pocidalo, Adrian Ozinsky, Jean Laurent Casanova*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

808 Scopus citations

Abstract

Members of the Toll-like receptor (TLR) and interleukin-1 receptor (IL-1R) superfamily share an intracytoplasmic Toll-IL-1 receptor (TIR) domain, which mediates recruitment of the interleukin-1 receptor-associated kinase (IRAK) complex via TIR-containing adapter molecules. We describe three unrelated children with inherited IRAK-4 deficiency. Their blood and fibroblast cells did not activate nuclear factor KB and mitogen-activated protein kinase (MAPK) and failed to induce downstream cytokines in response to any of the known ligands of TIR-bearing receptors. The otherwise healthy children developed infections caused by pyogenic bacteria. These findings suggest that, in humans, the TIR-IRAK signaling pathway is crucial for protective immunity against specific bacteria but is redundant against most other microorganisms.

Original languageEnglish
Pages (from-to)2076-2079
Number of pages4
JournalScience
Volume299
Issue number5615
DOIs
StatePublished - 28 03 2003
Externally publishedYes

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