Chemiluminescent detection of sequential DNA hybridizations to high- density, filter-arrayed cDNA libraries: A subtraction method for novel gene discovery

D. Guiliano, M. Ganatra, J. Ware, J. Parrot, J. Daub, L. Moran, H. Brennecke, J. M. Foster, T. Supali, M. Blaxter, A. L. Scott, S. A. Williams, B. E. Slatko

Research output: Contribution to journalArticle

Abstract

A chemiluminescent approach for sequential DNA hybridizations to high- density filter arrays of cDNAs, using a biotin-based random priming method followed by a streptavidin/alkaline phosphatase/CDP-Star(TM) detection protocol, is presented. The method has been applied to the Brugia malayi genome project, wherein cDNA libraries, cosmid and bacterial artificial chromosome (BAC) libraries have been gridded at high density onto nylon filters for subsequent analysis by hybridization. Individual probes and pools of rRNA probes, ribosomal protein probes and expressed sequence tag probes show correct specificity and high signal-to-noise ratios even after ten rounds of hybridization, detection, stripping of the probes from the membranes and rehybridization with additional probe sets. This approach provides a subtraction method that leads to a reduction in redundant DNA sequencing, thus increasing the rate of novel gene discovery. The method is also applicable for detecting target sequences, which are present in one or only a few copies per cell; it has proven useful for physical mapping of BAC and cosmid high-density filter arrays, wherein multiple probes have been hybridized at one time (multiplexed) and subsequently 'deplexed' into individual components for specific probe localizations.

Original languageEnglish (US)
Pages (from-to)146-152
Number of pages7
JournalBioTechniques
Volume27
Issue number1
StatePublished - Jul 19 1999

ASJC Scopus subject areas

  • Biotechnology
  • Biochemistry, Genetics and Molecular Biology(all)

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    Guiliano, D., Ganatra, M., Ware, J., Parrot, J., Daub, J., Moran, L., Brennecke, H., Foster, J. M., Supali, T., Blaxter, M., Scott, A. L., Williams, S. A., & Slatko, B. E. (1999). Chemiluminescent detection of sequential DNA hybridizations to high- density, filter-arrayed cDNA libraries: A subtraction method for novel gene discovery. BioTechniques, 27(1), 146-152.