PMID: 25736112Mar 5, 2015Paper

Expression of CD133 and Notch1 in non-small cell lung cancer and the clinicopathological significance

Nan fang yi ke da xue xue bao = Journal of Southern Medical University
Lei ZhouZenong Cheng

Abstract

To investigate the presence of cancer stem cells (CSCs) exist in non-small cell lung cancer (NSCLC) and explore the relationship among the expressions of CD133, Notch1, and vascular endothelial growth factor (VEGF) and their relations with the clinicopathological parameters of the patients. A total of 305 specimens of NSCLC and 80 normal lung tissue specimens were analyzed for CD133, Notch1, and VEGF protein expressions by immunohistochemical staining. In NSCLC specimens, the positivity rates of CD133, Notch1, and VEGF were 48.9%, 43.9%, and 45.6%, respectively, significantly higher than those in normal lung tissues (10.0%, 15.0%, and 0%, respectively, P<0.01). The expression levels of CD133, Notch1, and VEGF proteins were significantly correlated with the tumor grades, lymph node metastasis, TNM stages, and postoperative survival time of the patients (P<0.01). A positive correlation was found among the expression levels of CD133, Notch1, and VEGF proteins. Kaplan-Meier survival analysis showed a significantly lower overall mean survival time of the patients positive for CD133, Notch1, and VEGF than that of the negative patients (P<0.001). Cox regression analysis suggested that positive expressions of CD133 and Notch1 were inde...Continue Reading

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