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Related Experiment Videos

Human and mouse oligonucleotide-based array CGH.

Paul van den Ijssel1, Marianne Tijssen, Suet-Feung Chin

  • 1Department of Pathology, VU University Medical Center, Amsterdam, The Netherlands.

Nucleic Acids Research
|December 20, 2005
PubMed
Summary
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This study presents a validated oligonucleotide array comparative genomic hybridization (CGH) protocol for high-resolution copy number analysis. The method reliably detects small genomic alterations in human and mouse DNA, offering a cost-effective alternative to BAC arrays.

Area of Science:

  • Genomics
  • Molecular Biology
  • Biotechnology

Background:

  • Array-based comparative genomic hybridization (CGH) is crucial for detecting chromosomal copy number variations.
  • Existing methods may have limitations in resolution, cost, or accessibility.

Purpose of the Study:

  • To present and validate a novel, high-resolution oligonucleotide array CGH protocol.
  • To establish a cost-effective and accessible platform for genomic copy number analysis.

Main Methods:

  • Development and validation of an in-house spotted oligonucleotide library for array CGH.
  • Hybridization using a hybstation and analysis with BlueFuse feature extraction software.
  • Optimization of DNA input (300 ng) and reduction of Cot-1 DNA (90%).

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Main Results:

  • The oligo array CGH platform demonstrated reproducible results.
  • Detection of single copy gains, multi-copy amplifications, and homozygous/heterozygous deletions as small as 100 kb.
  • Successful application to human and mouse DNA, including archival tissue.

Conclusions:

  • The developed oligonucleotide array CGH protocol offers high resolution and reliability.
  • This platform is a cost-effective, accessible alternative to BAC arrays for CGH.
  • The protocol is easily implemented for any sequenced organism.