Inhibition of ICAM2 induces radiosensitisation in oral squamous cell carcinoma cells

T. Ishigami, K. Uzawa, K. Fushimi, K. Saito, Y. Kato, D. Nakashima, M. Higo, Y. Kouzu, H. Bukawa, T. Kawata, H. Ito, H. Tanzawa

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We recently identified genes and molecular pathways related to radioresistance of oral squamous cell carcinoma (OSCC) using Affymetrix GeneChip. The current study focused on the association between one of the target genes, intercellular adhesion molecule 2 (ICAM2), and resistance to X-ray irradiation in OSCC cells, and evaluated the antitumor efficacy of combining ICAM2 small interfering RNA (siRNA) and X-ray irradiation. Downregulation of ICAM2 expression by siRNA enhanced radiosensitivity of OSCC cells with the increased apoptotic phenotype via phosphorylation (ser473) of AKT and activation of caspase-3. Moreover, overexpression of ICAM2 induced greater OSCC cell resistance to the X-ray irradiation with the radioresistance phenotype. These results suggested that ICAM2 silencing is closely related to sensitivity of OSCC cells to radiotherapy, and that ICAM2 may be an effective radiotherapeutic target for this disease.

Original languageEnglish
Pages (from-to)1357-1365
Number of pages9
JournalBritish Journal of Cancer
Volume98
Issue number8
DOIs
Publication statusPublished - 2008 Apr 22
Externally publishedYes

Fingerprint

Cell Adhesion Molecules
Squamous Cell Carcinoma
X-Rays
Small Interfering RNA
Phenotype
Radiation Tolerance
Caspase 3
Genes
Radiotherapy
Down-Regulation
Phosphorylation

Keywords

  • ICAM2
  • Oral squamous cell carcinoma
  • Radioresistance
  • siRNA

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

Cite this

Ishigami, T., Uzawa, K., Fushimi, K., Saito, K., Kato, Y., Nakashima, D., ... Tanzawa, H. (2008). Inhibition of ICAM2 induces radiosensitisation in oral squamous cell carcinoma cells. British Journal of Cancer, 98(8), 1357-1365. https://doi.org/10.1038/sj.bjc.6604290

Inhibition of ICAM2 induces radiosensitisation in oral squamous cell carcinoma cells. / Ishigami, T.; Uzawa, K.; Fushimi, K.; Saito, K.; Kato, Y.; Nakashima, D.; Higo, M.; Kouzu, Y.; Bukawa, H.; Kawata, T.; Ito, H.; Tanzawa, H.

In: British Journal of Cancer, Vol. 98, No. 8, 22.04.2008, p. 1357-1365.

Research output: Contribution to journalArticle

Ishigami, T, Uzawa, K, Fushimi, K, Saito, K, Kato, Y, Nakashima, D, Higo, M, Kouzu, Y, Bukawa, H, Kawata, T, Ito, H & Tanzawa, H 2008, 'Inhibition of ICAM2 induces radiosensitisation in oral squamous cell carcinoma cells', British Journal of Cancer, vol. 98, no. 8, pp. 1357-1365. https://doi.org/10.1038/sj.bjc.6604290
Ishigami T, Uzawa K, Fushimi K, Saito K, Kato Y, Nakashima D et al. Inhibition of ICAM2 induces radiosensitisation in oral squamous cell carcinoma cells. British Journal of Cancer. 2008 Apr 22;98(8):1357-1365. https://doi.org/10.1038/sj.bjc.6604290
Ishigami, T. ; Uzawa, K. ; Fushimi, K. ; Saito, K. ; Kato, Y. ; Nakashima, D. ; Higo, M. ; Kouzu, Y. ; Bukawa, H. ; Kawata, T. ; Ito, H. ; Tanzawa, H. / Inhibition of ICAM2 induces radiosensitisation in oral squamous cell carcinoma cells. In: British Journal of Cancer. 2008 ; Vol. 98, No. 8. pp. 1357-1365.
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