Gefitinib ('Iressa', ZD1839), a selective epidermal growth factor receptor tyrosine kinase inhibitor, inhibits pancreatic cancer cell growth, invasion, and colony formation.

Junsheng Li, Jörg Kleeff, Nathalia Giese, Markus W. Büchler, Murray Korc, Helmut Friess

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

Pancreatic cancer is a devastating malignancy, characterized by low responsiveness to conventional chemotherapies. Gefitinib, an epidermal growth factor receptor-tyrosine kinase inhibitor (EGFR-TKI) has shown clinical activity against EGFR-expressing tumors. Since pancreatic cancers frequently overexpress EGFR (ErbB-1) and its ligands, our aim was to investigate the potential role of gefitinib in this disease. The GI50 of gefitinib as well as the effects of gefitinib on growth factor actions in pancreatic cancer cell lines were analyzed using MTT assays. FACS analysis using Annexin and propidium iodide (PI) staining were performed to study cell cycle, apoptosis and cell death. Western blot analysis was carried out to investigate expression levels of the 4 members of the ErbB family of receptors in pancreatic cancer cell lines, as well as MAP kinase and EGFR phosphorylation. Soft agar assays were used to measure colony formations. Invasiveness of cancer cells was analyzed using Matrigel-coated filters. gefitinib inhibited cell proliferation of pancreatic cancer cell lines with GI50 concentrations ranging from 2.5 to over 10 micro M. Gefitinib completely inhibited EGF-induced cell proliferation, but did not significantly influence insulin-like growth factor (IGF)-induced mitogenesis. Gefitinib also completely abolished EGF-induced phosphorylation of EGFR and MAP kinase. Furthermore, gefitinib inhibited basal and EGF-induced anchorage-independent cell growth and invasion. Our data demonstrate that gefitinib inhibits pancreatic cancer cell growth through EGFR-dependent pathways. Gefitinib also inhibits anchorage-independent growth and invasiveness, suggesting that gefitinib may offer a new approach for the treatment of pancreatic cancer.

Original languageEnglish (US)
Pages (from-to)203-210
Number of pages8
JournalInternational Journal of Oncology
Volume25
Issue number1
StatePublished - Jul 2004
Externally publishedYes

Fingerprint

Pancreatic Neoplasms
Epidermal Growth Factor Receptor
Protein-Tyrosine Kinases
Growth
Epidermal Growth Factor
Cell Line
gefitinib
Phosphotransferases
Phosphorylation
Cell Proliferation
Annexins
Neoplasms
Propidium
Somatomedins
Agar
Intercellular Signaling Peptides and Proteins
Cell Cycle
Cell Death
Western Blotting
Apoptosis

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

Cite this

Gefitinib ('Iressa', ZD1839), a selective epidermal growth factor receptor tyrosine kinase inhibitor, inhibits pancreatic cancer cell growth, invasion, and colony formation. / Li, Junsheng; Kleeff, Jörg; Giese, Nathalia; Büchler, Markus W.; Korc, Murray; Friess, Helmut.

In: International Journal of Oncology, Vol. 25, No. 1, 07.2004, p. 203-210.

Research output: Contribution to journalArticle

Li, Junsheng ; Kleeff, Jörg ; Giese, Nathalia ; Büchler, Markus W. ; Korc, Murray ; Friess, Helmut. / Gefitinib ('Iressa', ZD1839), a selective epidermal growth factor receptor tyrosine kinase inhibitor, inhibits pancreatic cancer cell growth, invasion, and colony formation. In: International Journal of Oncology. 2004 ; Vol. 25, No. 1. pp. 203-210.
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