Clinical significance of cancer stem cell markers in lung carcinoma
The identification of side population (SP) cells in several cancer studies has been proved to be involved in the treatment failure (chemotherapy) and tumor relapse. Here we have sorted 7% of side population (SP) cells from lung adenocarcinoma by Hoechst 33342 dye expulsion method. Further, the characterization of sorted SP cells showed cancer stem like properties such as transcriptional upregulation of stemness genes (OCT-4, SOX2 and NANOG), ATP binding cassette (ABC) transporter protein (ABCG2) and enhanced level of stem cell surface markers such as CD133 and CD44. Therefore, the aforesaid properties of lung adenocarcinoma SP cells play a significant and functional role in tumor invasion, metastasis, chemotherapeutic drug resistance and tumor recurrence in lung cancer.
Copyright (c) 2021 Liang Zhang, Lianglan Shen, Dijun Wu
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