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Published in: Tumor Biology 5/2013

01-10-2013 | Research Article

Evaluating stem and cancerous biomarkers in CD15+CD44+ KYSE30 cells

Authors: Fatemeh B. Rassouli, Maryam M. Matin, Ahamd Reza Bahrami, Kamran Ghaffarzadegan, Hamid Cheshomi, Sara Lari, Bahram Memar, Mun Seng Kan

Published in: Tumor Biology | Issue 5/2013

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Abstract

Digestive system cancers are listed among the ten top causes of cancer-related death worldwide. Cancer stem cells (CSCs) are malignant cells that share some of their characteristics with normal stem cells, including self-renewal and multipotency, and also cancer cells, such as drug resistance and metastasis. Despite many reports on CSCs with digestive system origin, identification and characterization of esophageal CSCs have remained elusive. To examine the validity of routine SC, cancer cell and CSC markers in KYSE30 cells, derived from esophageal carcinoma, cells were first characterized by immunofluorescence and RT-PCR techniques, and then the significance of candidate biomarkers was evaluated in retinoic acid-treated cells by flow cytometry and/or real-time RT-PCR. Meanwhile, to study CD15 (a newly introduced CSC marker) expression in digestive tract cancers, human normal and tumoral tissues of esophagus, stomach, and colon were analyzed by immunohistochemistry. Using several experimental approaches, we show that CD44, but not CD15, could serve as a reliable marker for undifferentiated malignant squamous cells of esophagus. In conclusion, our study confirms the role of CD44 as a CSC marker in KYSE30 cells, an esophageal squamous cell carcinoma cell line, and for the first time indicates the expression of CD15 in non-neural stem-like cancer cells. Although the importance of CD15 was not indicated in diagnosis of digestive cancers, further studies are needed to better understand the biological identity and function of this molecule in non-neural malignancies.
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Metadata
Title
Evaluating stem and cancerous biomarkers in CD15+CD44+ KYSE30 cells
Authors
Fatemeh B. Rassouli
Maryam M. Matin
Ahamd Reza Bahrami
Kamran Ghaffarzadegan
Hamid Cheshomi
Sara Lari
Bahram Memar
Mun Seng Kan
Publication date
01-10-2013
Publisher
Springer Netherlands
Published in
Tumor Biology / Issue 5/2013
Print ISSN: 1010-4283
Electronic ISSN: 1423-0380
DOI
https://doi.org/10.1007/s13277-013-0853-5

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