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  • Title: Scanning copy number and gene expression on the 16p13.3-13.2 chromosomal region by the systematic multiplex polymerase chain reaction and reverse transcription-polymerase chain reaction methods.
    Author: Yamamoto M, Ahn RH, Yamamoto F.
    Journal: Electrophoresis; 2006 Jul; 27(13):2529-40. PubMed ID: 16721907.
    Abstract:
    We developed the systematic multiplex reverse transcription-PCR (SM RT-PCR) method that is distinguishable from other multiplex RT-PCR methods by optimized PCR conditions allowing amplification of sequences that fall within a single exon of genes of similar band intensity using genomic DNA template as a calibration standard. Using an SM RT-PCR system of proto-oncogenes and tumor suppressor genes, we previously showed that the SM RT-PCR system, which was developed for cDNA expression analysis, could also be used for a more exquisite analysis of copy number changes in genomic DNA. Here we report that the SM PCR method semiquantitatively detected less than a two-fold difference in copy number. Furthermore, we also report the results of subchromosomal scanning of copy number and expression using the SM PCR and SM RT-PCR methods. We identified and characterized the novel homozygous deletion that spans over 12-plus genes on 16p13.3-13.2 in the MDA-MB-468 breast cancer cell line.
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