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06 April 2016 : Laboratory Research  

Identification and Characterization of CD133pos Subpopulation Cells From a Human Laryngeal Cancer Cell Line

Hai-ou QiuAEG, Huifang WangDF, Na CheAB, Dong LiAB, Yong MaoC, Qiao ZengBD, Rongming GeA

DOI: 10.12659/MSM.895645

Med Sci Monit 2016; 22:1146-1151

Abstract

BACKGROUND: Recent research indicates that CD133 are expressed in several kinds of stem cells, among which, its high expression in laryngeal carcinoma has caused wide concern. To further explore efficaciously targeting drugs to laryngeal carcinoma stem cells (CSCs), we transplanted a solid tumor from CSCs into abdominal subcutaneous tissue of nude mice, and then compared the biological characteristics of laryngeal solid tumors with or without cisplatin intervention.

MATERIAL AND METHODS: In this study, the expression of CD133 was detected in the Hep-2 cell line by flow cytometry. By applying magnetic cell sorting (MACS) technology, we reported the results of purifying CD133-positive cells from a Hep-2 cell line. Cell proliferation, colony formation, and tumor-forming ability were examined in vitro and in vivo to identify the marker of CSCs in Hep-2 cell line.

RESULTS: Upon flow cytometry analysis, CD133 was expressed constantly on 40.12±1.32% in Hep-2 cell line. Cell proliferation and colony formation ability were higher in CD133-positive cells compared to CD133-negative cells, and the in vivo tumorigenesis experiment showed the same results as in vitro assay. The 2 subpopulations cells were both sensitive to DDP, among which, the effect of DPP on proliferation ability and tumor-forming ability of CD133-positive cells was obviously greater than that of CD133-negative cells.

CONCLUSIONS: Above all, our study revealed that CD133-positive cells have properties of higher proliferation, colony formation, and tumorigenesis in Hep-2 cell line, indicating that CD133 could be a marker to characterize laryngeal cancer stem cells.

Keywords: AC133 Antigen - metabolism, Cell Proliferation - drug effects, Cell Separation, Cisplatin - therapeutic use, Laryngeal Neoplasms - pathology, Magnetic Phenomena, Mice, Inbred BALB C, Tumor Burden - drug effects, Tumor Stem Cell Assay

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750