Analysis of gene expression involved in brain metastasis from breast cancer using cDNA microarray

Itaru Nishizuka, Takashi Ishikawa, Yohei Hamaguchi, Masako Kamiyama, Yasushi Ichikawa, Koji Kadota, Rika Miki, Yasuhiro Tomaru, Yosuke Mizuno, Naoko Tominaga, Rieko Yano, Hitoshi Goto, Hiroyuki Nitanda, Shinji Togo, Yasushi Okazaki, Yoshihide Hayashizaki, Hiroshi Shimada

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


Background: Brain metastases occur in 15% to 30% of breast cancer patients, usually as a late event. The patterns of metastases to different organs are determined by the tumor cell phenotype and interactions between the tumor cells and the organ environment. Methods: We investigated the gene expression profile occurring in brain metastases from a breast cancer cell line. We used cDNA microarrays to compare patterns of gene expression between the mouse breast cancer cell line Jyg MC (A) and a subline that often metastasis to brain, (B). Results: By Microarray analysis about 350 of 21,000 genes were significantly up-regulated in Jyg MC (B). Many candidate genes that may be associated with the establishment of brain metastasis from breast cancer were included. Interestingly, we found that the expression of astrocyte derived cytokine receptors (IL-6 receptor, TGF-beta receptor and IGF receptor) were significantly increased in Jyg MC (B) cells. These results were confirmed by RT-PCR. Conclusion: These results suggest that cytokines produced by glial cells in vivo may contribute, in a paracrine manner, to the development of brain metastases from breast cancer cells.

Original languageEnglish
Pages (from-to)26-32
Number of pages7
JournalBreast Cancer
Issue number1
Publication statusPublished - 2002 Jan
Externally publishedYes


  • Brain metastasis
  • Breast cancer
  • CDNA microarray
  • Cell line
  • Cytokine

ASJC Scopus subject areas

  • Oncology
  • Radiology Nuclear Medicine and imaging
  • Pharmacology (medical)


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