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Erschienen in: Annals of Surgical Oncology 3/2014

01.06.2014 | Gastrointestinal Oncology

EpCAM, a Potential Therapeutic Target for Esophageal Squamous Cell Carcinoma

verfasst von: Tatsuo Matsuda, MD, Hiroya Takeuchi, MD, PhD, Sachiko Matsuda, PhD, Kunihiko Hiraiwa, MD, PhD, Taku Miyasho, PhD, Minoru Okamoto, PhD, Kazufumi Kawasako, PhD, Rieko Nakamura, MD, PhD, Tsunehiro Takahashi, MD, PhD, Norihito Wada, MD, PhD, Hirofumi Kawakubo, MD, PhD, Yoshiro Saikawa, MD, PhD, Tai Omori, MD, Yuko Kitagawa, MD, PhD

Erschienen in: Annals of Surgical Oncology | Sonderheft 3/2014

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Abstract

Background

Molecular-targeted drugs are not available for esophageal squamous cell carcinoma (ESCC), which has a poor prognosis. We investigated the clinicopathological significance of epithelial cell adhesion molecule (EpCAM) expression and the utility of EpCAM as a potential therapeutic target.

Methods

The relationship between EpCAM expression and clinicopathological factors was examined by immunohistochemistry in 74 patients with resectable ESCC. A total of ten ESCC cell lines were analyzed for EpCAM expression. The effects of EpCAM knockdown in TE4, TE10, and TE14 cells were examined with regard to cell proliferation and gene expression in vitro and tumor growth in vivo. The antitumor effect of catumaxomab in ESCC cell lines was examined.

Results

EpCAM overexpression was associated with poor survival in ESCC patients (P = 0.026). Multivariate Cox regression analysis showed that EpCAM overexpression was a significant and independent prognostic factor for surgically treated ESCC (P = 0.004). TE4 and TE10 cells showed high EpCAM expression, in contrast to TE14. EpCAM siRNA knockdown in TE4 and TE10 cells downregulated CCND1 and CCNE2 and suppressed cell proliferation. Low EpCAM expression reduced tumorigenesis; TE4 cells initiated tumorigenesis in seven of the ten mice injected, whereas shRNA knockdown resulted in smaller tumors in two of ten mice at 6 weeks after transplantation. Concentration- and time-dependent antitumor effects of catumaxomab were observed in TE4 and TE10 cells.

Conclusions

EpCAM overexpression is an independent prognostic factor for surgically treated ESCC. EpCAM contributes to cell proliferation and tumorigenesis and may be a useful therapeutic target for ESCC.
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Metadaten
Titel
EpCAM, a Potential Therapeutic Target for Esophageal Squamous Cell Carcinoma
verfasst von
Tatsuo Matsuda, MD
Hiroya Takeuchi, MD, PhD
Sachiko Matsuda, PhD
Kunihiko Hiraiwa, MD, PhD
Taku Miyasho, PhD
Minoru Okamoto, PhD
Kazufumi Kawasako, PhD
Rieko Nakamura, MD, PhD
Tsunehiro Takahashi, MD, PhD
Norihito Wada, MD, PhD
Hirofumi Kawakubo, MD, PhD
Yoshiro Saikawa, MD, PhD
Tai Omori, MD
Yuko Kitagawa, MD, PhD
Publikationsdatum
01.06.2014
Verlag
Springer US
Erschienen in
Annals of Surgical Oncology / Ausgabe Sonderheft 3/2014
Print ISSN: 1068-9265
Elektronische ISSN: 1534-4681
DOI
https://doi.org/10.1245/s10434-014-3579-8

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