Stimulation of CD40 inhibits Fas- or chemotherapy-mediated apoptosis and increases cell motility in human gastric carcinoma cells.

Hiroshi Yamaguchi, Fumiaki Tanaka, Noriaki Sadanaga, Mitsuhiko Ohta, Hiroshi Inoue, Masaki Mori

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

The widespread expression of CD40, a member of the tumor necrosis factor (TNF) receptor (TNFR) superfamily, is likely to account for the central role of CD40 in the regulation of humoral immunity and host defense. Interestingly, the expression of the CD40 in various types of carcinoma cells was often observed and conveys signals regulating diverse cellular responses, ranging from proliferation to growth suppression. Thus, the biologic role of the CD40-CD40L interaction in solid tumors is still controversial. In this study, we investigated the expression and function of the CD40 in gastric carcinoma cells. In 3-4,5 dimethylthiozol-2-yl-2,5-diphenyl tetrazolium bromide (MTT) assay and Annexin V/propidium iodide staining, CD40 stimulation using a soluble form of CD40 ligand did not affect cell viability, but significantly inhibited Fas-mediated or chemotherapy-mediated apoptosis in three CD40-positive gastric cancer cell lines. Moreover, in migration assay, CD40 stimulation induced an elevation of cell motility in CD40-positive gastric carcinoma cells. Our results show that the CD40 expression on gastric carcinoma makes cells less vulnerable to apoptosis induced by Fas or chemotherapy. These results suggest that the CD40 expression on gastric carcinoma may be associated with cell survival and elevation of cell motility.

Original languageEnglish
Pages (from-to)1697-1702
Number of pages6
JournalInternational journal of oncology
Volume23
Issue number6
DOIs
Publication statusPublished - Dec 2003

All Science Journal Classification (ASJC) codes

  • Oncology
  • Cancer Research

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