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Related Concept Videos

DNA Microarrays02:34

DNA Microarrays

Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...
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Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...

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Related Experiment Video

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Multiplexed Analysis of Retinal Gene Expression and Chromatin Accessibility Using scRNA-Seq and scATAC-Seq
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Functional genomics via multiscale analysis: application to gene expression and ChIP-on-chip data.

Gilad Lerman1, Joseph McQuown, Alexandre Blais

  • 1Department of Mathematics, University of Minnesota, 127 Vincent Hall, 206 Church St. S.E., Minneapolis, MN 55455, USA. lerman@umn.edu

Bioinformatics (Oxford, England)
|December 14, 2006
PubMed
Summary

A new algorithm rapidly analyzes DNA microarray data for normalization and identifying enriched targets in gene expression and ChIP-on-chip experiments. It effectively handles the unique characteristics of ChIP-on-chip data for accurate results.

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Area of Science:

  • Bioinformatics
  • Computational Biology
  • Genomics

Background:

  • DNA microarray technology is crucial for analyzing gene expression and protein-DNA interactions.
  • ChIP-on-chip (Chromatin Immunoprecipitation sequencing) experiments generate complex data requiring specialized analysis.
  • Existing algorithms may not adequately address the unique characteristics of ChIP-on-chip data, such as large, asymmetric sets of enriched targets.

Purpose of the Study:

  • To develop a fast, versatile, and adaptive-multiscale algorithm for DNA microarray data analysis.
  • To apply the algorithm for normalization of array data.
  • To identify 'enriched targets' in various experimental contexts, including gene expression profiling and ChIP-on-chip data.

Main Methods:

  • Development of an adaptive-multiscale algorithm.
  • Application of the algorithm to DNA microarray data normalization.
  • Utilizing the algorithm for the identification of differentially expressed genes and enriched sites.
  • Specific adaptations to accommodate the characteristics of ChIP-on-chip data.

Main Results:

  • The algorithm demonstrates speed and versatility across various DNA microarray data types.
  • Successful normalization of array data.
  • Effective identification of 'enriched targets', including differentially expressed genes and ChIP-on-chip enriched sites.
  • Demonstrated ability to handle large, asymmetric sets of enriched targets with locally varying proportions in ChIP-on-chip data.

Conclusions:

  • The presented algorithm offers a robust and efficient solution for analyzing diverse DNA microarray data.
  • It provides a valuable tool for researchers in gene expression profiling and ChIP-on-chip studies.
  • The algorithm's adaptability makes it suitable for complex biological datasets.