CD11a polymorphisms regulate T(H)2 cell homing and T(H)2-related disease

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Background: T(H)2-dependent diseases vary in severity according to genotype, but relevant gene polymorphisms remain largely unknown. The integrin CD11a is a critical determinant of allergic responses, and allelic variants of this gene might influence allergic phenotypes. Objective: We sought to determine major CD11a allelic variants in mice and human subjects and their importance to allergic disease expression. Methods: We sequenced mouse CD11a alleles from C57BL/6 and BALB/c strains to identify major polymorphisms; human CD11a single nucleotide polymorphisms were compared with allergic disease phenotypes as part of the international HapMap project. Mice on a BALB/c or C57BL/6 background and congenic for the other strain's CD11a allele were created to determine the importance of mouse CD11a polymorphisms in vivo and in vitro. Results: Compared with the C57BL/6 allele, the BALB/c CD11a allele contained a nonsynonymous change from asparagine to aspartic acid within the metal ion binding domain. In general, the BALB/c CD11a allele enhanced and the C57BL/6 CD11a allele suppressed T(H)2 cell-dependent disease caused by the parasite Leishmania major and allergic lung disease caused by the fungus Aspergillus niger. Relative to the C57BL/6 CD11a allele, the BALB/c CD11a allele conferred both greater T-cell adhesion to CD54 in vitro and enhanced T(H)2 cell homing to lungs in vivo. We further identified a human CD11a polymorphism that significantly associated with atopic disease and relevant allergic indices. Conclusions: Polymorphisms in CD11a critically influence T(H)2 cell homing and diverse T(H)2-dependent immunopathologic states in mice and potentially influence the expression of human allergic disease.
Publisher
MOSBY-ELSEVIER
Issue Date
2014-01
Language
English
Article Type
Article
Keywords

FUNCTION-ASSOCIATED ANTIGEN-1; ADHESION MOLECULE-1 ICAM-1; I-DOMAIN; LEISHMANIA-MAJOR; LFA-1; INTEGRIN; MICE; EXPRESSION; ASTHMA; LIGAND

Citation

JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY, v.133, no.1, pp.189 - 189

ISSN
0091-6749
DOI
10.1016/j.jaci.2013.03.049
URI
http://hdl.handle.net/10203/187109
Appears in Collection
MSE-Journal Papers(저널논문)
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