Analysis of gene expression using high-density and IFN-gamma-specific low-density cDNA arrays.
The combination of high and low density cDNA filter array technology potentially permits both the identification of subsets of induced genes and convenient and rapid multisample expression profiling of such subsets under a variety of conditions. The JAK/STAT1 pathway for IFN-gamma signaling in human cells has been well characterized, but the extent and importance of additional pathways remain to be established. Here, using high-density filter arrays of the RZPD UniGene set, we identified 18 novel IFN-gamma-inducible genes. Expression profiling was carried out using low-density arrays representing both novel and known IFN-gamma-inducible genes. Initial experiments failed to detect evidence for any novel non-JAK-dependent pathways in cells expressing a kinase-dead JAK2. The data, however, validated the potential of the combined methods in establishing rapid and convenient expression profiling of several hundred genes in response to any ligand of choice.
Aberger
F
F
Institute of Genetics, University of Salzburg, Hellbrunnerstrasse 34, Salzburg, A-5020, Austria.
Costa-Pereira
A P
AP
Schlaak
J F
JF
Williams
T M
TM
O'Shaughnessy
R F
RF
Hollaus
G
G
Kerr
I M
IM
Frischauf
A M
AM
D020869:Gene Expression Profiling; D015972:Gene Expression Regulation, Neoplastic / Q000187:drug effects; D006801:Humans; D007371:Interferon-gamma / Q000494:pharmacology*; D053614:Janus Kinase 2; D020411:Oligonucleotide Array Sequence Analysis / Q000379:methods*; D011505:Protein-Tyrosine Kinases / Q000235:genetics / Q000502:physiology; D011518:Proto-Oncogene Proteins; D015398:Signal Transduction; D014407:Tumor Cells, Cultured
D011518:Proto-Oncogene Proteins; D007371:Interferon-gamma; D011505:Protein-Tyrosine Kinases; C507924:JAK2 protein, human; D053614:Janus Kinase 2