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Related Experiment Videos

Transcript mapping with high-density oligonucleotide tiling arrays.

Wolfgang Huber1, Joern Toedling, Lars M Steinmetz

  • 1European Molecular Biology Laboratory, European Bioinformatics Institute, Cambridge CB10 1SD, UK. huber@ebi.ac.uk

Bioinformatics (Oxford, England)
|June 22, 2006
PubMed
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This study presents a new method for analyzing high-density DNA tiling microarray data. The approach accurately identifies transcript boundaries and normalizes probe signals for better transcriptome characterization.

Area of Science:

  • Genomics
  • Transcriptomics
  • Bioinformatics

Background:

  • High-density DNA tiling microarrays are essential for transcriptome characterization.
  • Key challenges include accurate transcript boundary determination and quantitative signal comparability.
  • Sequence-dependent probe responses complicate data analysis.

Purpose of the Study:

  • To develop a robust computational method for analyzing DNA tiling microarray data.
  • To address the challenges of signal segmentation and probe response normalization.
  • To enable accurate characterization of complete transcriptomes.

Main Methods:

  • A dynamic programming algorithm for optimal segmentation of hybridization signals.
  • A probe-specific background correction and scaling method using empirical parameters.

Related Experiment Videos

  • Analysis of hybridization data from high-density DNA tiling microarrays.

    • Main Results:

    • The dynamic programming algorithm achieves globally optimal segmentation of expression profiles.
    • The developed method accurately corrects for probe-specific background and signal scaling.
    • The combined approach allows precise determination of transcriptional architecture dynamics.

    Conclusions:

    • This analytical approach enhances the accuracy of transcriptome characterization using tiling microarrays.
    • It facilitates the study of complex transcriptional phenomena in eukaryotic genomes.
    • The R package "tilingArray" is available for broader application.