Inter-individual variation of several cytochrome P450 2D6 splice variants in human liver.

Abstract:

:To examine the possibility that inter-individual differences in splicing partially explain the observed differences in CYP2D6 activity, we amplified its full-length cDNA in 96 human liver RNA samples and discovered five splice variants: intron 5 retention, intron 6 retention, intron 5 and intron 6 double retention, exon 3 skipping, and partial intron 1 retention. All of the CYP2D6 splice variants we identified are probably nonfunctional transcripts. Substantial inter-individual variation in the proportions of the CYP2D6 transcript represented by splice variants, measured by real-time PCR, suggests that the presence of these splice variants contributes to the population variation in CYP2D6 activity. Relatively high levels of intron 6 retention were not correlated with the newly discovered single nucleotide polymorphism 2988G > A in intron 6 (CYP2D6*41) but did correlate with the more common CYP2D6*34 allele. Our study prompts further investigations to explore the effect of these splice variants on drug metabolism.

authors

Denson J,Wu Y,Yang W,Zhang J

doi

10.1016/j.bbrc.2005.03.010

subject

Has Abstract

pub_date

2005-05-06 00:00:00

pages

498-504

issue

2

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(05)00465-1

journal_volume

330

pub_type

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