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Background

Pulmonary fibrosis is a complex disease for which the predisposing genetic variants remain unknown. In a prior study, susceptibility to bleomycin induced pulmonary fibrosis was mapped to loci Blmpf1 and Blmpf2 on chromosomes 17 and 11, respectively, in a C57BL/6J (B6, susceptible) and C3Hf/KAM (C3H, resistant) mouse cross.

Methods

Herein, the genetic basis of bleomycin induced pulmonary fibrosis was investigated in an approach combining gene expression and sequencing data with previously mapped linkage intervals.

Results

In this study, gene expression analysis with microarrays revealed 1892 genes or ESTs (expressed sequence tags) to be differentially expressed between bleomycin treated B6 and C3H mice and 67 of these genetic elements map to Blmpf1 or Blmpf2. This group included genes involved in an oxidative stress response, in apoptosis, and in immune regulation. A comparison of the B6 and C3H sequence, for Blmpf1 and Blmpf2, made using the NCBI database and available C3H sequence, revealed approximately 35% of the genes in these regions contain non-synonymous coding sequence changes. An assessment of genotype/phenotype correlation among other inbred strains revealed 36% of these B6/C3H sequence variations predict for the known bleomycin induced fibrosis susceptibility of the DBA (susceptible) and A/J (resistant) mouse strains.

Conclusions

Combining genomics approaches of differential gene expression and sequence variation potentially identifies approximately 5% the linked genes as fibrosis susceptibility candidate genes in this mouse cross."xsd:string
http://purl.uniprot.org/citations/15937080http://purl.org/dc/terms/identifier"doi:10.1136/jmg.2004.027938"xsd:string
http://purl.uniprot.org/citations/15937080http://purl.uniprot.org/core/author"Godin N."xsd:string
http://purl.uniprot.org/citations/15937080http://purl.uniprot.org/core/author"Haston C.K."xsd:string
http://purl.uniprot.org/citations/15937080http://purl.uniprot.org/core/author"Hallett M.T."xsd:string
http://purl.uniprot.org/citations/15937080http://purl.uniprot.org/core/author"Kerckhoff L."xsd:string
http://purl.uniprot.org/citations/15937080http://purl.uniprot.org/core/author"Tomko T.G."xsd:string
http://purl.uniprot.org/citations/15937080http://purl.uniprot.org/core/date"2005"xsd:gYear
http://purl.uniprot.org/citations/15937080http://purl.uniprot.org/core/name"J Med Genet"xsd:string
http://purl.uniprot.org/citations/15937080http://purl.uniprot.org/core/pages"464-473"xsd:string
http://purl.uniprot.org/citations/15937080http://purl.uniprot.org/core/title"Murine candidate bleomycin induced pulmonary fibrosis susceptibility genes identified by gene expression and sequence analysis of linkage regions."xsd:string
http://purl.uniprot.org/citations/15937080http://purl.uniprot.org/core/volume"42"xsd:string
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