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Blood, 15 August 2008, Vol. 112, No. 4, pp. 1453-1460.
Prepublished online as a Blood First Edition Paper on June 3, 2008; DOI 10.1182/blood-2007-07-099267.
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Submitted July 3, 2007
Accepted April 1, 2008
Essential role of nuclear factor-kappa B for NADPH oxidase activity in normal and anhidrotic ectodermal dysplasia leukocytes
Marcos Luengo-Blanco, Carolina Prando, Jacinta Bustamante, Walmir Cutrim Aragao-Filho, Paulo Vitor Soeiro Pereira, Jussara Rehder, Carolyn Padden, Jean-Laurent Casanova, Peter E. Newburger*, and Antonio Condino-Neto
Department of Pediatrics, State University of Campinas, Campinas, SP, Brazil
Laboratory of Human Genetics of Infectious Diseases, Necker Medical School, Paris, France
Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, SP, Brazil
Department of Pediatrics, University of Massachusetts Medical School, Worcester, MA, United States
* Corresponding author; email: peter.newburger{at}umassmed.edu.
This work investigated the functional role of nuclear factor-kappa B (NF- B) in respiratory burst activity and in expression of the human phagocyte NADPH oxidase genes CYBB, CYBA, NCF1, and NCF2. U937 cells with a stably transfected repressor of NF- B (I- B -S32A/S36A) demonstrated significantly lower superoxide release and lower CYBB and NCF1 gene expression compared to control U937 cells. We further tested EBV-transformed B cells from patients with anhidrotic ectodermal dysplasia with immunodeficiency (EDA-ID), an inherited disorder of NF- B function. Superoxide release and CYBB gene expression by EDA-ID cells were significantly decreased compared to normal cells and similar to X-linked chronic granulomatous disease (X910 CGD) patient cells. NCF1 gene expression in EDA-ID S32I cells was decreased compared to normal control cells and similar to autosomal recessive (A470) CGD cells. Gel shift assays demonstrated loss of recombinant human p50 binding to a NF- B site 5' to the CYBB gene in U937 cells treated with NF- B inhibitors, repressor-transfected U937 cells, and EDA-ID patients' cells. Zymosan phagocytosis was not affected by transfection of U937 cells with the NF- B repressor. These studies show that NF- B is necessary for CYBB and NCF1 gene expression and activation of the phagocyte NADPH oxidase in this model system.

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