Selective gene delivery toward gastric and esophageal adenocarcinoma cells via EpCAM-targeted adenoviral vectors

Daniëlle A.M. Heideman, Peter J.F. Snijders, Mikael E. Craanen, Elisabeth Bloemena, Chris J.L.M. Meijer, Stefan G.M. Meuwissen, Victor W. Van Beusechem, Herbert M. Pinedo, David T. Curiel, Hidde J. Haisma, Winald R. Gerritsen

Research output: Contribution to journalArticlepeer-review

63 Scopus citations


Application of recombinant adenoviral vectors for cancer gene therapy is currently limited due to lack of specificity for tumor cells. For gastric and esophageal adenocarcinoma, we present here that the relative abundant expression of the primary adenovirus receptor, coxsackie/adenovirus receptor (CAR), on normal epithelium compared to carcinoma favors the transduction of the epithelium. As such, to achieve specific transduction of cancer cells, targeting approaches are required that ablate the binding of the virus to CAR and redirect the virus to tumor-specific receptors. By immunohistochemistry and reverse transcriptase polymerase chain reaction assays, we demonstrate a marked difference in expression of the human epithelial cell adhesion molecule (EpCAM) between normal and (pre)malignant lesions of the stomach and esophagus. Based on this, we explored the feasibility of using EpCAM to achieve gastric and esophageal adenocarcinoma selective gene transfer. Adenoviral vectors redirected to EpCAM using bispecific antibodies against the adenovirus fiber-knob protein and EpCAM specifically infected gastric and esophageal cancer cell lines. Using primary human cells, an improved ratio of tumor transduction over normal epithelium transduction was accomplished by the EpCAM-targeted vectors. This study thus indicates that EpCAM-targeted adenoviral vectors may be useful for gastric and esophageal cancer-specific gene therapy in patients.

Original languageEnglish (US)
Pages (from-to)342-351
Number of pages10
JournalCancer Gene Therapy
Issue number5
StatePublished - 2001
Externally publishedYes


  • Coxsackie/adenovirus receptor
  • Epithelial cell adhesion molecule
  • Gastric and esophageal cancer
  • Gene therapy
  • Tumor marker
  • Vector targeting

ASJC Scopus subject areas

  • Molecular Medicine
  • Molecular Biology
  • Cancer Research


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