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Nucleic Acids Res. Aug 15, 1998; 26(16): 3865–3866.
PMCID: PMC147769

Two color hybridization analysis using high density oligonucleotide arrays and energy transfer dyes.


High density oligonucleotide arrays (DNA chips) have been used in two color mutational analysis of the 3.43 kb exon 11 of the hereditary breast and ovarian cancer gene BRCA1 . Two color analysis allows competitive hybridization between a reference standard and an unknown sample, improving the performance of the assay. Fluorescein and phycoerythrin dyes werepreviously used due to their compatibility with a single line 488 nm excitation source. Here we show that an alternative dye combination, containing the energy transfer dye system phycoerythrin*cy5 along with phycoerythrin, provides more evenly matched signal intensities and decreased spectral overlap between the two fluorophores, while maintaining compatibility with a 488 nm excitation source.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
  • Hacia JG, Brody LC, Chee MS, Fodor SP, Collins FS. Detection of heterozygous mutations in BRCA1 using high density oligonucleotide arrays and two-colour fluorescence analysis. Nat Genet. 1996 Dec;14(4):441–447. [PubMed]
  • Ju J, Ruan C, Fuller CW, Glazer AN, Mathies RA. Fluorescence energy transfer dye-labeled primers for DNA sequencing and analysis. Proc Natl Acad Sci U S A. 1995 May 9;92(10):4347–4351. [PMC free article] [PubMed]
  • Chee M, Yang R, Hubbell E, Berno A, Huang XC, Stern D, Winkler J, Lockhart DJ, Morris MS, Fodor SP. Accessing genetic information with high-density DNA arrays. Science. 1996 Oct 25;274(5287):610–614. [PubMed]

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