Up-regulation of GIPC2 in human gastric cancer

  • Authors:
    • Hiroyuki Kirikoshi
    • Masaru Katoh
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  • Published online on: June 1, 2002     https://doi.org/10.3892/ijo.20.6.1183
  • Pages: 1183-1187
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Abstract

GIPC1/GIPC, GIPC2, and GIPC3 are a family of central PDZ-domain proteins. GIPC1/GIPC interacts with TGFβ type III receptor, receptor tyrosine kinase TrkA, integrin α6A subunit, and GTPase-activating protein RGS-GAIP, while Xenopus homologue of human GIPCs interacts with Frizzled-3 (FZD3) class of WNT receptor. Here, we investigated expression of GIPC2 mRNA in human gastric, pancreatic, and breast cancer cell lines. GIPC2 mRNA was relatively highly expressed in OKAJIMA, TMK1, MKN45, and KATO-III cells derived from diffuse type of gastric cancer, but was almost undetectable in MKN7, MKN28, and MKN74 cells derived from intestinal type of gastric cancer as well as in other cell lines derived from pancreatic and breast cancer. Tumor necrosis factor α and interferon γ, which are elevated in gastric mucosa with Helicobacter pylori infection, did not affect the expression level of GIPC2 mRNA in MKN45 cells. Up-regulation of GIPC2 mRNA was detected in 7 out of 10 cases of primary gastric cancer by using cDNA-PCR, and in 4 out of another 8 cases of primary gastric cancer by using expression array filter hybridization. GIPC2 might play important roles in human gastric cancer through modulation of growth factor signaling or cell adhesion.

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June 2002
Volume 20 Issue 6

Print ISSN: 1019-6439
Online ISSN:1791-2423

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APA
Kirikoshi, H., & Kirikoshi, H. (2002). Up-regulation of GIPC2 in human gastric cancer. International Journal of Oncology, 20, 1183-1187. https://doi.org/10.3892/ijo.20.6.1183
MLA
Kirikoshi, H., Katoh, M."Up-regulation of GIPC2 in human gastric cancer". International Journal of Oncology 20.6 (2002): 1183-1187.
Chicago
Kirikoshi, H., Katoh, M."Up-regulation of GIPC2 in human gastric cancer". International Journal of Oncology 20, no. 6 (2002): 1183-1187. https://doi.org/10.3892/ijo.20.6.1183