UNIGE document Scientific Article
previous document  unige:11248  next document
add to browser collection

Genetic and molecular definition of complementation group D in MHC class II deficiency

Fondaneche, M. C.
Wiszniewski, W.
Jouanguy, E.
Etzioni, A.
Le Deist, F.
Peijnenburg, A.
Casanova, J. L.
show hidden authors show all authors [1 - 12]
Published in Human Molecular Genetics. 1998, vol. 7, no. 5, p. 879-885
Abstract Four complementation groups, A, B, C and D, have been described among cell lines defective in the coordinate expression of MHC class II genes. These include cell lines established from patients affected with MHC class II deficiency and experimentally generated mutant cell lines. Group D, in contrast to the other groups, was for a long time represented only by the 6.1.6 mutant cell line. The gene responsible for the defect in this group, RFXAP, recently was cloned and found to be mutated in the 6.1.6 cell line and in three patients. Here we report fusion experiments in several new HLA class II-deficient patients, completing the classification of the majority of known patients into the four complementation groups. Patients from five unrelated families were classified in complementation group D, while nine others fall into complementation groups A and B. None of the patients defined a new complementation group. Full correction of MHC class II expression was obtained in cells from patients belonging to group D by transfection with the RFXAP cDNA. The RFXAP coding region was found to be mutated in all patients. Mutations were found to be recurrent since only three different mutations have been found in the eight unrelated families reported to date.
Keywords Antigens, Differentiation, B-Lymphocyte/geneticsB-LymphocytesCell LineDNA-Binding Proteins/geneticsFibroblastsGene Expression/ immunologyGenes, MHC Class IIGenetic Complementation TestHLA-D Antigens/geneticsHistocompatibility Antigens Class II/ biosynthesis/ geneticsHumansMutation/geneticsTransfection/immunology
Stable URL http://archive-ouverte.unige.ch/unige:11248
Full text
Article - document accessible for UNIGE members only Limited access to UNIGE
Other version: http://hmg.oxfordjournals.org/cgi/reprint/7/5/879.pdf
PMID: 9536093
143 hits and 0 download since 2010-08-27
Export document
Format :
Citation style :