Pyogenic Bacterial Infections in Humans with IRAK-4 Deficiency

Author:

Picard Capucine1,Puel Anne1,Bonnet Marion1,Ku Cheng-Lung1,Bustamante Jacinta1,Yang Kun1,Soudais Claire1,Dupuis Stéphanie1,Feinberg Jacqueline1,Fieschi Claire1,Elbim Carole2,Hitchcock Remi3,Lammas David4,Davies Graham5,Al-Ghonaium Abdulaziz6,Al-Rayes Hassan6,Al-Jumaah Sulaiman6,Al-Hajjar Sami6,Al-Mohsen Ibrahim Zaid6,Frayha Husn H.6,Rucker Rajivi3,Hawn Thomas R.7,Aderem Alan7,Tufenkeji Haysam6,Haraguchi Soichi3,Day Noorbibi K.3,Good Robert A.3,Gougerot-Pocidalo Marie-Anne2,Ozinsky Adrian7,Casanova Jean-Laurent18

Affiliation:

1. Laboratoire de Génétique Humaine des Maladies Infectieuses, Université René Descartes-INSERM U550, Faculté Necker, 156 rue de Vaugirard, 75015 Paris, France.

2. Service d'Immunologie Cellulaire, Laboratoire d'Hématologie et d'Immunologie, INSERM U294, FacultéXavier Bichat, 75018 Paris, France.

3. Department of Pediatrics, Division of Allergy and Immunology, University of South Florida and All Children's Hospital, St. Petersburg, FL 33701, USA.

4. MRC Center for Immune Regulation, The Medical School, University of Birmingham, Birmingham B15 2TT, UK.

5. Infectious Diseases Unit, Great Ormond Street Hospital for Children, London WC1N 3JH, UK.

6. Department of Pediatrics, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Kingdom of Saudi Arabia.

7. Institute for Systems Biology, 1441 North 34th Street, Seattle, WA 98103, USA.

8. Unitéd'Immunologie et d'Hématologie Pédiatriques, Hôpital Necker-Enfants Malades, 149 rue de Sèvres, 75015 Paris, France.

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 κB 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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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