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Proceedings of the National Academy of Sciences of the United States of America logoLink to Proceedings of the National Academy of Sciences of the United States of America
. 1995 Jan 3;92(1):151–155. doi: 10.1073/pnas.92.1.151

Comparative genomic analysis of tumors: detection of DNA losses and amplification.

N A Lisitsyn 1, N M Lisitsina 1, G Dalbagni 1, P Barker 1, C A Sanchez 1, J Gnarra 1, W M Linehan 1, B J Reid 1, M H Wigler 1
PMCID: PMC42835  PMID: 7816807

Abstract

We demonstrate the use of representational difference analysis for cloning probes that detect DNA loss and amplification in tumors. Using DNA isolated from human tumor cell lines to drive hybridization against matched normal DNA, we were able to identify six genomic regions that are homozygously deleted in cultured cancer cells. When this method was applied in the reverse way, using normal DNA to drive hybridization against tumor cell DNA, we readily isolated probes detecting amplification. Representational difference analysis was also performed on DNAs derived from tumor biopsies, and we thereby discovered a probe detecting very frequent homozygous loss in colon cancer cell lines and located on chromosome 3p.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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