Volume 47, Issue 1 , Pages 32-41, March 2008
Comparison of Whole Genome Amplification Methods for Further Quantitative Analysis with Microarray-based Comparative Genomic Hybridization
Article Outline
Summary
Objective
Whole genome amplification (WGA) is a crucial procedure for genomic DNA analysis from limited sources, such as in forensic analysis, embryo biopsy for preimplantation genetic diagnosis, or needle aspiration biopsies. Several strategies for WGA have been developed for either genotyping or microarray-based comparative genome hybridization (array-CGH) during the past decade. Nevertheless, there were few studies in which various WGA methods had been performed side-by-side and results evaluated with multiple methods.
Materials and Methods
Ease of performance, qualitative accuracy, and quantitative fidelity of different WGA methods, such as degenerate oligonucleotide-primed polymerase chain reaction (DOP-PCR), ligation-mediated PCR (LM-PCR) and strand displacement amplification (SDA), were compared in amplifyinggenomic DNA derived from karyotype-confirmed amniocytes and the cancer cell line SAOS2.
Results
Using analysis with microsatellite markers, single nucleotide polymorphism markers, and array-CGH, our results suggested that: (1) genomic DNA amplified from DOP-PCR resulted in false positive and negative results by analysis with array-CGH; (2) SDA is the easiest performance method among the three WGA methods; and (3) amplified DNA products generated by LM-PCR best reflect the original genomic DNA.
Conclusion
The amplified DNA products generated by LM-PCR best reflect the original genomic DNA.
Key Words: array-CGH , DOP-PCR , LM-PCR , SDA , whole genome amplification
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PII: S1028-4559(08)60052-2
doi:10.1016/S1028-4559(08)60052-2
© 2008 Taiwan Association of Obstetric & Gynecology. Published by Elsevier Inc. All rights reserved.
Volume 47, Issue 1 , Pages 32-41, March 2008
