Creating gene set activity profiles with time-series expression data. (18th July 2008)

• Record Type: Journal Article
• Authors: Knijnenburg, T.A.; Wessels, L.F.A.; Reinders, M.J.T.
• Is Part Of: International journal of bioinformatics research and applications. Volume 4:Number 3(2008)
• Page Start: 306
• Page End: 323
• Publication Date: 2008-07-18
• Subjects: time-series expression -- gene expression data -- gene sets -- statistical testing -- central limit theorem -- CLT -- activity pro&amp -- #64257 -- les -- bioinformatics -- microarray; Bioinformatics -- Periodicals; 570.285
• Languages: English
• ISSNs: 1744-5485

Abstract

The use of predefined gene sets has become crucial in the interpretation of genomewide expression data. A limitation of the existing techniques that relate gene expression levels to gene sets is that they cannot readily be applied to time-course microarray data. The ability to attach statistical significance to the behaviour of biological processes over time would greatly contribute to understanding the complex regulatory mechanisms in the cell. We propose a statistical testing procedure based on the central limit theorem to assess the enrichment of a gene set. The technique is applied on time-course microarray data to generate gene-set specific 'activity profiles'.