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Erschienen in: Journal of Gastroenterology 7/2010

01.07.2010 | Original Article—Liver, Pancreas, and Biliary Tract

Expression of MSX2 predicts malignancy of branch duct intraductal papillary mucinous neoplasm of the pancreas

verfasst von: Kennichi Satoh, Shin Hamada, Atsushi Kanno, Morihisa Hirota, Jun Umino, Hiromichi Ito, Atsushi Masamune, Shinichi Egawa, Michiaki Unno, Tooru Shimosegawa

Erschienen in: Journal of Gastroenterology | Ausgabe 7/2010

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Abstract

Background

To distinguish malignant from benign branch duct (BD)-intraductal papillary mucinous neoplasm (IPMN) still remains difficult. Recently, we revealed that MSX2 was frequently expressed in pancreatic cancer and its expression was correlated with aggressive behavior of the cancer. The aim of this study was to assess the involvement of MSX2 in IPMN development and whether its expression would differentiate malignant from benign IPMN.

Methods

Seventeen microdissected lesions and 45 IPMN tissues were used for quantitative real-time reverse-transcription polymerase chain reaction (RT-PCR) and immunohistochemistry, respectively. The role of MSX2 in the pancreatic duct cell was assessed by the induced expression of MSX2 in a normal human pancreatic duct epithelial cell line (HPDE).

Results

Malignant IPMN expressed significantly higher levels of MSX2 mRNA than benign IPMN lesions. MSX2 protein expression was frequently found in borderline and malignant lesions (20/29, 68.9%), while its expression was seen in only one of 16 benign IPMN tissues. Univariate analysis showed that nodules of 6 mm or more and MSX2 expression were significantly correlated with the malignancy of BD-IPMN (P = 0.022 and 0.0026, respectively), and multivariate analysis revealed that only MSX2 expression was identified as an independent factor to predict malignant BD-IPMN. HPDE cells expressing MSX2 showed increased cellular proliferation compared to control cells.

Conclusions

Based on our results, MSX2 plays a pivotal role in the development of IPMN through growth stimulation of tumor cells, and its expression was identified as an independent predictive factor for malignancy of BD-IPMN.
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Metadaten
Titel
Expression of MSX2 predicts malignancy of branch duct intraductal papillary mucinous neoplasm of the pancreas
verfasst von
Kennichi Satoh
Shin Hamada
Atsushi Kanno
Morihisa Hirota
Jun Umino
Hiromichi Ito
Atsushi Masamune
Shinichi Egawa
Michiaki Unno
Tooru Shimosegawa
Publikationsdatum
01.07.2010
Verlag
Springer Japan
Erschienen in
Journal of Gastroenterology / Ausgabe 7/2010
Print ISSN: 0944-1174
Elektronische ISSN: 1435-5922
DOI
https://doi.org/10.1007/s00535-010-0200-1

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