Please use this identifier to cite or link to this item:
Type: Artigo de periódico
Title: Essential role of nuclear factor-kappa B for NADPH oxidase activity in normal and anhildrotic ectodermal dysplasia leukocytes
Author: LUENGO-BLANCO, Marcos
PRANDO, Carolina
ARAGO-FILHO, Walmir Cutrim
PEREIRA, Paulo Vitor Soeiro
REHDER, Jussara
PADDEN, Carolyn
CASANOVA, Jean-Laurent
Abstract: This work investigated the functional role of nuclear factor-kappa B (NF-kappa B) in respiratory burst activity and in expression of the human phagocyte nicotinamide adenine dinucleotide phosphate (NADPH) oxidase genes CYBB, CYBA, NCF1, and NCF2. U937 cells with a stably transfected repressor of NF-kappa B (IKB alpha-S32A/S36A) demonstrated significantly lower superoxide release and lower CYBB and NCF1 gene expression compared with control U937 cells. We further tested Epstein-Barr virus (EBV)-transformed B cells from patients with anhidrotic ectodermal dysplasia with immunodeficiency (EDA-ID), an inherited disorderof NF-kappa B function. Superoxide release and CYBB gene expression by EDA-ID cells were significantly decreased compared with healthy cells and similar to cells from patients with X-linked chronic granulomatous disease (X91 degrees CGD). NCF1 gene expression in EDA-ID S321 cells was decreased compared with healthy control cells and similar to that in autosomal recessive (A47 degrees) CGD cells. Gel shift assays demonstrated loss of recombinant human p50 binding to a NF-kappa B site 5` to the CYBB gene in U937 cells treated with NF-kappa B inhibitors, repressor-transfected U937 cells, and EDA-ID patients cells. Zymosan phagocytosis was not affected by transfection of U937 cells with the NF-kappa B repressor. These studies show that NF-kappa B is necessary for CYBB and NCF1 gene expression and activation of the phagocyte NADPH oxidase in this model system.
Country: Estados Unidos
Citation: BLOOD, v.112, n.4, p.1453-1460, 2008
Rights: fechado
Identifier DOI: 10.1182/blood-2007-07-099267
Date Issue: 2008
Appears in Collections:FCM - Artigos e Outros Documentos

Files in This Item:
File Description SizeFormat 
art_LUENGO-BLANCO_Essential_role_of_nuclear_factor-kappa_B_for_2008.pdfpublished version501.5 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.