Identification of a novel asthma susceptibility gene on chromosome 1qter and its functional evaluation

Julia H. White, Mathias Chiano, Mark Wigglesworth, Robert Geske, John Riley, Nicola White, Simon Hall, Guohua Zhu, Frank Maurio, Tony Savage, Wayne Anderson, Joanna Cordy, Melissa Ducceschi, Jorgen Vestbo, Sreekumar G. Pillai, Kathleen C. Barnes, Karin Carlsen, Jorrit Gerritsen, Warren Lenney, Michael SilvermanPeter Sly, John Sundy, John Tsanakas, Andrea von Berg, Moira Whyte, Peter J. Helms

Research output: Contribution to journalArticle

Abstract

Asthma is a multifactorial disease, in which the intricate interplay between genetic and environmental factors underlies the overall phenotype of the disease. Using a genome-wide scan for linkage in a population comprising of Danish families, we identified a novel linked locus on chromosome 1qter (LOD 3.6, asthma) and supporting evidence for this locus was identified for both asthma and atopic-asthma phenotypes in the GAIN (Genetics of Asthma International Network) families. The putative susceptibility gene was progressively localized to a 4.5 Mb region on chromosome 1q adjacent to the telomere, through a series of genotyping screens. Further screening using the pedigree-based association test (PBAT) identified polymorphisms in the OPN3 and CHML genes as being associated with asthma and atopic asthma after correcting for multiple comparisons. We observed that polymorphisms flanking the OPN3 and CHML genes wholly accounted for the original linkage in the Danish population and the genetic association was also confirmed in two separate studies involving the GAIN families. OPN3 and CHML are unique genes with no known function that are related to the pathophysiology of asthma. Significantly, analysis of gene expression at both RNA and protein levels, clearly demonstrated OPN3 expression in lung bronchial epithelia as well as immune cells, while CHML expression appeared minimal. Moreover, OPN3 down-regulation by siRNA knock-down in Jurkat cells suggested a possible role for OPN3 in modulation of T-cell responses. Collectively, these data suggest that OPN3 is an asthma susceptibility gene on 1qter, which unexpectedly may play a role in immune modulation.

Original languageEnglish (US)
Pages (from-to)1890-1903
Number of pages14
JournalHuman Molecular Genetics
Volume17
Issue number13
DOIs
StatePublished - Jul 2008
Externally publishedYes

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Asthma
Chromosomes
Genes
Phenotype
Jurkat Cells
Telomere
Population Genetics
Pedigree
Small Interfering RNA
Down-Regulation
Epithelium
Genome
RNA
T-Lymphocytes
Gene Expression
Lung
cytotropic heterogeneous molecular lipid
Population
Proteins

ASJC Scopus subject areas

  • Genetics

Cite this

White, J. H., Chiano, M., Wigglesworth, M., Geske, R., Riley, J., White, N., ... Helms, P. J. (2008). Identification of a novel asthma susceptibility gene on chromosome 1qter and its functional evaluation. Human Molecular Genetics, 17(13), 1890-1903. https://doi.org/10.1093/hmg/ddn087

Identification of a novel asthma susceptibility gene on chromosome 1qter and its functional evaluation. / White, Julia H.; Chiano, Mathias; Wigglesworth, Mark; Geske, Robert; Riley, John; White, Nicola; Hall, Simon; Zhu, Guohua; Maurio, Frank; Savage, Tony; Anderson, Wayne; Cordy, Joanna; Ducceschi, Melissa; Vestbo, Jorgen; Pillai, Sreekumar G.; Barnes, Kathleen C.; Carlsen, Karin; Gerritsen, Jorrit; Lenney, Warren; Silverman, Michael; Sly, Peter; Sundy, John; Tsanakas, John; von Berg, Andrea; Whyte, Moira; Helms, Peter J.

In: Human Molecular Genetics, Vol. 17, No. 13, 07.2008, p. 1890-1903.

Research output: Contribution to journalArticle

White, JH, Chiano, M, Wigglesworth, M, Geske, R, Riley, J, White, N, Hall, S, Zhu, G, Maurio, F, Savage, T, Anderson, W, Cordy, J, Ducceschi, M, Vestbo, J, Pillai, SG, Barnes, KC, Carlsen, K, Gerritsen, J, Lenney, W, Silverman, M, Sly, P, Sundy, J, Tsanakas, J, von Berg, A, Whyte, M & Helms, PJ 2008, 'Identification of a novel asthma susceptibility gene on chromosome 1qter and its functional evaluation', Human Molecular Genetics, vol. 17, no. 13, pp. 1890-1903. https://doi.org/10.1093/hmg/ddn087
White, Julia H. ; Chiano, Mathias ; Wigglesworth, Mark ; Geske, Robert ; Riley, John ; White, Nicola ; Hall, Simon ; Zhu, Guohua ; Maurio, Frank ; Savage, Tony ; Anderson, Wayne ; Cordy, Joanna ; Ducceschi, Melissa ; Vestbo, Jorgen ; Pillai, Sreekumar G. ; Barnes, Kathleen C. ; Carlsen, Karin ; Gerritsen, Jorrit ; Lenney, Warren ; Silverman, Michael ; Sly, Peter ; Sundy, John ; Tsanakas, John ; von Berg, Andrea ; Whyte, Moira ; Helms, Peter J. / Identification of a novel asthma susceptibility gene on chromosome 1qter and its functional evaluation. In: Human Molecular Genetics. 2008 ; Vol. 17, No. 13. pp. 1890-1903.
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AU - Pillai, Sreekumar G.

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