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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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Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...

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Related Experiment Video

Updated: Jun 22, 2026

Technical Demonstration of Whole Genome Array Comparative Genomic Hybridization
16:37

Technical Demonstration of Whole Genome Array Comparative Genomic Hybridization

Published on: August 5, 2008

Comparison of comparative genomic hybridization technologies across microarray platforms.

Susan D Hester1, Laura Reid, Norma Nowak

  • 1Cellular Toxicology Branch, National Health and Environmental Effects Laboratory, U.S. Environmental Protection Agency, 109 T.W. Alexander Drive, Research Triangle Park, NC 27711, USA. hester.susan@epa.gov

Journal of Biomolecular Techniques : JBT
|June 9, 2009
PubMed
Summary
This summary is machine-generated.

This study compared five DNA copy number variation (CNV) platforms using HL-60 cells. All platforms detected known CNVs, with some identifying novel variations, aiding platform selection.

Keywords:
BAC arrayHL-60arrayCGH

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Published on: March 15, 2011

Area of Science:

  • Genomics
  • Molecular Biology
  • Biotechnology

Background:

  • The HL-60 cell line is a standard model for studying genomic alterations.
  • Accurate detection of copy number variations (CNVs) is crucial for cancer research and diagnostics.
  • Evaluating diverse microarray platforms is essential for selecting optimal tools for CNV analysis.

Purpose of the Study:

  • To assess the performance of five different microarray platforms in detecting CNVs in HL-60 DNA.
  • To evaluate the reproducibility and accuracy of these platforms in identifying known and novel genomic variations.
  • To provide guidance for selecting appropriate comparative genomic hybridization (CGH) platforms.

Main Methods:

  • Analysis of HL-60 DNA using five platforms: Agilent, Affymetrix 500K, Affymetrix U133 Plus 2.0, Illumina, and RPCI 19K BAC arrays.
  • Copy number variation analysis employing circular binary segmentation (CBS) on log ratio scores from four independent hybridizations per platform.
  • Assessment of data reproducibility and detection of previously reported CNVs in HL-60.

Main Results:

  • All five platforms successfully identified known CNVs in HL-60, including amplification at 8q24, trisomy 18, monosomy X, and deletions at multiple loci.
  • At least two platforms detected five novel genomic losses and five novel genomic gains within the HL-60 genome.
  • The study demonstrated varying degrees of reproducibility and detection capability across the evaluated platforms.

Conclusions:

  • The evaluated CGH platforms exhibit varying performance characteristics for CNV detection in the HL-60 cell line.
  • All platforms could detect established CNVs, but novel variation discovery differed.
  • This comprehensive evaluation offers valuable insights for researchers selecting CGH platforms for genomic studies.