Dynamic variation in allele-specific gene expression of Paraoxonase-1 in murine and human tissues.

Abstract:

:Differential allelic expression has been shown to be common in mice, humans and maize, and variability in the expression of polymorphic alleles has been associated with human disease. Here, we describe the differential expression pattern of Paraoxonase-1, a gene involved in lipid metabolism and implicated in the formation of atherosclerotic lesions. We measured the expression of the murine Paraoxonase-1 gene (Pon1) in livers at different stages of embryonic development using F1 hybrid crosses and quantified the transcriptional level of both parental alleles. Using human foetal tissues, we analysed the expression of the human orthologue (PON1) and found monoallelic or preferential allelic expression in 6/7 and 4/4 samples from liver and pancreas, respectively. We observed that Pon1 does not show a parent-of-origin preference in its allelic expression, but has dramatic variations in allele-specific expression occurring throughout development. This study has important repercussions in the analysis of haplotypes at disease loci, since it implies that the expression of polymorphic alleles can be unequal and dynamic.

journal_name

Hum Mol Genet

journal_title

Human molecular genetics

authors

Parker-Katiraee L,Bousiaki E,Monk D,Moore GE,Nakabayashi K,Scherer SW

doi

10.1093/hmg/ddn222

subject

Has Abstract

pub_date

2008-11-01 00:00:00

pages

3263-70

issue

21

eissn

0964-6906

issn

1460-2083

pii

ddn222

journal_volume

17

pub_type

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