Identification of low-abundance differentially expressed transcripts using arrayed cDNA clones

Comp Biochem Physiol B Biochem Mol Biol. 2002 Dec;133(4):537-42. doi: 10.1016/s1096-4959(02)00146-x.


Analysis of comparative gene expression by the use of DNA microarrays has become a widely used tool. However, this technique is only readily applied to organisms where sequence information is known. This paper describes the development of a low-cost method of gene discovery by enrichment of differentially expressed transcripts, which uses cDNA library arrays of bacterial clones on nylon membranes (macroarrays) coupled with a subtractive probe preparation method to discover differentially expressed genes. The method requires no prior knowledge of the organism's genome sequence and overcomes the inherent insensitivity of standard methods of macroarray hybridisation.

Publication types

  • Comparative Study

MeSH terms

  • Animals
  • DNA, Complementary
  • Drosophila Proteins / genetics*
  • Drosophila Proteins / metabolism
  • Drosophila melanogaster / genetics*
  • Drosophila melanogaster / metabolism*
  • Female
  • Gene Expression Profiling*
  • Gene Library
  • Male
  • Nucleic Acid Hybridization
  • Nylons
  • Oligonucleotide Array Sequence Analysis / methods*
  • Polymerase Chain Reaction
  • RNA, Messenger / genetics*
  • RNA, Messenger / metabolism*
  • Transcription, Genetic


  • DNA, Complementary
  • Drosophila Proteins
  • Nylons
  • RNA, Messenger