CD40L association with protection from severe malaria

CD40 ligand (CD40L), a glycoprotein involved in B cell proliferation, antigen presenting cell activation, and Ig class switching, is important in the immune response to infection. Rare coding mutations in CD40L can lead to life-threatening immunodeficiency but the potential for common variants to al...

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Veröffentlicht in:Genes and immunity 2002-08, Vol.3 (5), p.286-291
Hauptverfasser: Sabeti, P, Usen, S, Farhadian, S, Jallow, M, Doherty, T, Newport, M, Pinder, M, Ward, R, Kwiatkowski, D
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container_end_page 291
container_issue 5
container_start_page 286
container_title Genes and immunity
container_volume 3
creator Sabeti, P
Usen, S
Farhadian, S
Jallow, M
Doherty, T
Newport, M
Pinder, M
Ward, R
Kwiatkowski, D
description CD40 ligand (CD40L), a glycoprotein involved in B cell proliferation, antigen presenting cell activation, and Ig class switching, is important in the immune response to infection. Rare coding mutations in CD40L can lead to life-threatening immunodeficiency but the potential for common variants to alter disease susceptibility remains to be explored. To identify polymorphisms in CD40L, we sequenced 2.3 kb of the 5′ flanking region and the first exon of the gene in DNA samples from 36 Gambian females and one chimpanzee. Diversity was lower than the average reported for other areas of the X chromosome, and only two polymorphisms were identified. The polymorphisms were genotyped in DNA samples from 957 Gambian individuals, cases and controls from a study of severe malaria. A significant reduction in risk for severe malaria (OR = 0.52, P = 0.002) was associated with males hemizygous for the CD40L−726C. Analysis by transmission disequilibrium test of 371 cases, for whom DNA from both parents was also available, confirmed the result was not due to stratification (P = 0.04). A similar but non-significant trend was found in females. This preliminary association of a common variant in CD40L with a malaria resistance phenotype encourages further genetic characterization of the role of CD40L in infectious disease.
doi_str_mv 10.1038/sj.gene.6363877
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Rare coding mutations in CD40L can lead to life-threatening immunodeficiency but the potential for common variants to alter disease susceptibility remains to be explored. To identify polymorphisms in CD40L, we sequenced 2.3 kb of the 5′ flanking region and the first exon of the gene in DNA samples from 36 Gambian females and one chimpanzee. Diversity was lower than the average reported for other areas of the X chromosome, and only two polymorphisms were identified. The polymorphisms were genotyped in DNA samples from 957 Gambian individuals, cases and controls from a study of severe malaria. A significant reduction in risk for severe malaria (OR = 0.52, P = 0.002) was associated with males hemizygous for the CD40L−726C. Analysis by transmission disequilibrium test of 371 cases, for whom DNA from both parents was also available, confirmed the result was not due to stratification (P = 0.04). A similar but non-significant trend was found in females. 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subjects Alleles
Animals
Antigen-presenting cells
Antigens
Base Sequence
Biomedical and Life Sciences
Biomedicine
Cancer Research
Case-Control Studies
CD40 antigen
CD40 Ligand - genetics
CD40L protein
Cell activation
Cell growth
Cell proliferation
Chromosomes, Human, X - genetics
Class switching
Deoxyribonucleic acid
DNA
DNA - genetics
Female
full-paper
Gambia
Gene Expression
Gene Frequency
Genes
Genetic testing
Genetic Variation
Glycoproteins
Haplotypes
HIV
Human Genetics
Human immunodeficiency virus
Humans
Immunodeficiency
Immunoglobulins
Immunology
Infections
Infectious diseases
Ligands
Lymphocytes
Lymphocytes B
Malaria
Malaria, Falciparum - genetics
Malaria, Falciparum - immunology
Malaria, Falciparum - prevention & control
Male
Molecular Sequence Data
Monkeys & apes
Pan troglodytes
Phenotype
Phenotypes
Promoter Regions, Genetic
X chromosomes
title CD40L association with protection from severe malaria
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