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Published in: BMC Cancer 1/2011

Open Access 01-12-2011 | Research article

CD133: a potential indicator for differentiation and prognosis of human cholangiocarcinoma

Authors: Linni Fan, Furong He, Hongxiang Liu, Jin Zhu, Yixiong Liu, Zhiyong Yin, Lu Wang, Ying Guo, Zhe Wang, Qingguo Yan, Gaosheng Huang

Published in: BMC Cancer | Issue 1/2011

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Abstract

Background

CD133 is known to be a cancer stem cell (CSC) marker. However, recent studies have revealed that CD133 is not restricted to CSC but to be expressed not only in human normal tissues but also in some cancers and could serve as a prognostic factor for the patients. Nevertheless, the expression of CD133 in human cholangiocarcinoma (CC) is rare and our study is to detect the expression and explore the potential functions of CD133 in human CC.

Methods

Fifty-nine cases, comprised of 5 normal liver tissues and 54 consecutive CC specimens (21 well-differentiated, 12 moderately-differentiated and 21 poorly-differentiated), were included in the study. Immunohistochemical stainning with CD133 protein was carried out, and statistical analyses were performed.

Results

CD133 was found to express in all 5 normal livers and 40 out of 54 (74%) CC tissues with different subcellular localization. In the well, moderately and poorly differentiated cases, the numbers of CD133 positive cases were 19 (19 of 21, 90%), 10 (10 of 12, 83%) and 11 (11 of 21, 52%) respectively. Further statistical analyses indicated that the expression and different subcellular localization of CD133 were significantly correlated with the differentiation status of tumors (P = 0.004, P = 0.009). Among 23 patients followed up for survival, the median survival was 4 months for fourteen CD133 negative patients but 14 months for nine CD133 positive ones. In univariate survival analysis, CD133 negative expression correlated with poor prognosis while CD133 positive expression predicted a favorable outcome of CC patients (P = 0.001).

Conclusions

Our study demonstrates that CD133 expression correlates with the differentiation of CC and indicates that CD133 is a potential indicator for differentiation and prognosis of human CC.
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Metadata
Title
CD133: a potential indicator for differentiation and prognosis of human cholangiocarcinoma
Authors
Linni Fan
Furong He
Hongxiang Liu
Jin Zhu
Yixiong Liu
Zhiyong Yin
Lu Wang
Ying Guo
Zhe Wang
Qingguo Yan
Gaosheng Huang
Publication date
01-12-2011
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2011
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/1471-2407-11-320

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