Jetset: selecting the optimal microarray probe set to represent a gene

Interpretation of gene expression microarrays requires a mapping from probe set to gene. On many Affymetrix gene expression microarrays, a given gene may be detected by multiple probe sets, which may deliver inconsistent or even contradictory measurements. Therefore, obtaining an unambiguous express...

Full description

Saved in:
Bibliographic Details
Published in:BMC bioinformatics 2011-12, Vol.12 (1), p.474-474, Article 474
Main Authors: Li, Qiyuan, Birkbak, Nicolai J, Gyorffy, Balazs, Szallasi, Zoltan, Eklund, Aron C
Format: Article
Language:English
Subjects:
Breast Neoplasms - genetics
Design
DNA microarrays
Exons
Female
Gene expression
Gene Expression Profiling
Gene Expression Regulation, Neoplastic
Genes
Health sciences
Humans
Methodology
Oligonucleotide Array Sequence Analysis - methods
Physiological aspects
Receptor, ErbB-2 - genetics
Receptors, Estrogen - genetics
Sensitivity and Specificity
Studies
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Interpretation of gene expression microarrays requires a mapping from probe set to gene. On many Affymetrix gene expression microarrays, a given gene may be detected by multiple probe sets, which may deliver inconsistent or even contradictory measurements. Therefore, obtaining an unambiguous expression estimate of a pre-specified gene can be a nontrivial but essential task. We developed scoring methods to assess each probe set for specificity, splice isoform coverage, and robustness against transcript degradation. We used these scores to select a single representative probe set for each gene, thus creating a simple one-to-one mapping between gene and probe set. To test this method, we evaluated concordance between protein measurements and gene expression values, and between sets of genes whose expression is known to be correlated. For both test cases, we identified genes that were nominally detected by multiple probe sets, and we found that the probe set chosen by our method showed stronger concordance. This method provides a simple, unambiguous mapping to allow assessment of the expression levels of specific genes of interest.
ISSN:1471-2105
1471-2105
DOI:10.1186/1471-2105-12-474