Home CONTACT Neoplasma 2014 Neoplasma Vol.61, No.2, p.177-185, 2014

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6 times a year.
Founded: 1954
ISSN 0028-2685
ISSN 1338-4317 (online)

Published in English

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Neoplasma Vol.61, No.2, p.177-185, 2014

Title: Over-expression of LGR5 correlates with poor survival of colon cancer in mice as well as in patients
Author: Z. Liu, W. Dai, L. Jiang, Y. Cheng

Abstract: Leucine-rich repeat-containing G protein-coupled receptor 5(LGR5) was identified as the stem cell marker of colon cancer stem cells(CSCs),which were considered as the main criminal cells initiation and reinitiation of colon cancer. We intended to demonstrate and further explain the relationship between LGR5 and colon cancer in mice model and patients. In our research, we used transcriptional methods and immunohistochemistry to investigate the LGR5 gene and protein expression, examined proliferating cell nuclear antigen(PCNA) and Ki67 which were the classic markers for cell proliferation in LGR5 protein positive and negative colon cancer among mice model and patients. Our results showed that LGR5 mRNA and protein expression was significantly over-expressed in 193/366 patients and 24/40mice model with primary colon cancer contrasted with matched normal tissues; significantly higher LGR5 gene expression was detected in pT4 cases than that in pT3 cases; PCNA and Ki67 expression was much more increase in colon cancer cells with positive LGR5 expression than those with negative LGR5 expression;LGR5 positive cancer not only in mice model but also in patients have shorter survival rate compared with LGR5 negative cancer. All our study manifested that LGR5 took on an important effect in the initiation and progression of colon cancer, provided also more helpful evidence for clinical diagnosis and an useful indicator for adjuvant therapy.

Keywords: LGR5, colon cancer , survival rate
Published online: 25-Sep-2013
Year: 2014, Volume: 61, Issue: 2 Page From: 177, Page To: 185

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