Antitumor effect of gefitinib on head and neck squamous cell carcinoma enhanced by trastuzumab.

Abstract:

:The overexpression of EGFR and/or HER-2 is associated with tumor cell resistance to chemotherapy, radiotherapy, disease progression and poor prognosis in patients with a variety of malignant tumors. Treatment combining the EGFR-targeting drug, gefitinib (ZD1839, Iressa) with the HER-2-targeting drug, trastuzumab (Herceptin) has been reported to improve therapeutic efficacy in patients with breast cancer. The purpose of this study was to examine the antitumor effect of this combination on head and neck squamous cell carcinoma (HNSCC) in vitro. Cell proliferation was inhibited significantly in two cell lines. Although IC50 of gefitinib alone against some cell lines was not reached, it was achieved after being combined with trastuzumab. Furthermore, IC50 was lower for the combination than for gefitinib alone in several cell lines. These results suggest that the combination may improve efficacy against HNSCC.

journal_name

Oncol Rep

journal_title

Oncology reports

authors

Kondo N,Ishiguro Y,Kimura M,Sano D,Fujita K,Sakakibara A,Taguchi T,Toth G,Matsuda H,Tsukuda M

subject

Has Abstract

pub_date

2008-08-01 00:00:00

pages

373-8

issue

2

eissn

1021-335X

issn

1791-2431

journal_volume

20

pub_type

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