Down Modulation of Fibronectin Messenger RNA in Metastasizing Rat Prostatic Cancer Cells Revealed bY Differential Hybridization Analysis

Jack A. Schalken, Saskya B. Ebeling, John T. Isaacs, Brent Treiger, Marion Bussemakers, Maddy E. De Jong, Wim J. Van de Ven

Research output: Contribution to journalArticlepeer-review

Abstract

To identify genes whose expression is down modulated in the process of metastasis, gene expression was analyzed in cell lines derived from Dunning R-3327 rat prostatic tumor sublines. A complementary DNA (cDNA) library from the anaplastic nonmetastasizing subline AT-1 was used for a differential hybridization analysis, using probes derived from mRNAs of the AT-1 and the metastasizing MAT-LyLu subline. In this way 14 cDNA clones were isolated representing 6 differentially expressed genes. The expression levels in a panel of tumor sublines measured with these cDNA clones were tested for correlation with the anaplastic non-metastasizing phenotype. One cDNA clone, designated pSE-1, whose expression was high in all tested sublines with that phenotype, appeared to represent the gene for fibronectin. To further investigate the down modulation of this gene, we studied its expression in AT-2 (anaplastic, nonmetastasizing tumor) and lines derived therefrom that exhibited a high metastatic potential after transfection with the v-Ha-raz oncogene. In the genetically manipulated metastasizing tumor sublines, fibronectin mRNA levels were approximately 4- to 8-fold lowered compared to the nonmetastasizing parental AT-2 line.

Original languageEnglish (US)
Pages (from-to)2042-2046
Number of pages5
JournalCancer Research
Volume48
Issue number8
StatePublished - Jan 1 1988

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

Fingerprint

Dive into the research topics of 'Down Modulation of Fibronectin Messenger RNA in Metastasizing Rat Prostatic Cancer Cells Revealed bY Differential Hybridization Analysis'. Together they form a unique fingerprint.

Cite this