Gene expression profiling identifies tumour markers potentially playing a role in uveal melanoma development.
Microarray is a powerful tool to compare the gene expression of different tumour specimens and cell lines simultaneously and quantitatively. To get a better insight into genes that are involved in uveal melanoma tumorigenesis, we compared the gene expression profiles of 12 different uveal melanoma cell lines with three melanocyte cell cultures obtained from healthy donor eyes. Gene expression profiles were obtained by nylon filter arrays, containing 1176 gene spots related to cancer development. The expression levels of selected genes were validated on cell lines and primary uveal melanomas by real time RT-PCR, and were subsequently included in cluster analysis. Four candidate tumour markers, Laminin Receptor 1, Endothelin 2, Von Hippel Lindau Binding protein 1 and Cullin 2, have been selected from genes that were differentially expressed in the uveal melanoma cell lines compared to the normal uveal melanocytes. In primary uveal melanomas, these four markers could discriminate between two classes of uveal melanoma, which may be indicative of a differential disease process.
Zuidervaart
W
W
Department of Ophthalmology, Leiden University Medical Centre, Postbus 9600, 2300 RC Leiden, The Netherlands. w.zuidervaart@lumc.nl
van der Velden
P A
PA
Hurks
M H
MH
van Nieuwpoort
F A
FA
Out-Luiting
C J J
CJ
Singh
A D
AD
Frants
R R
RR
Jager
M J
MJ
Gruis
N A
NA
D014408:Biomarkers, Tumor / Q000032:analysis*; D020869:Gene Expression Profiling; D006801:Humans; D008545:Melanoma / Q000235:genetics* / Q000473:pathology*; D020411:Oligonucleotide Array Sequence Analysis; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014407:Tumor Cells, Cultured; D014604:Uveal Neoplasms / Q000235:genetics* / Q000473:pathology*
D014408:Biomarkers, Tumor