Abstract
Cervical cancer is one of the most common gynecologic malignancies and poses a serious health problem worldwide. Identification and characterization of cervical cancer stem cells may facilitate the development of novel strategies for the treatment of advanced and metastatic cervical cancer. Breast cancer-resistance protein (Bcrp1)-positive cells were selected from a population of parent HeLa cells using flow cytometry. The invasion capacity of Bcrp1-positive and -negative cells was analyzed with a Boyden chamber invasion test. The tumorigenicity of these cells was determined by in vivo transplantation in non-obesity diabetes/severe combined immunodeficiency (NOD/SCID) mice. The Bcrp1-positive subpopulation accounted for about 7% of the parent HeLa cell population. The proliferative capacity of the Bcrp1-positive cells was greater than that of the Bcrp1-negative cells (P < 0.05). In the invasion assay, the Bcrp1-positive cells demonstrated a greater invasive capacity through the artificial basement membrane than their Bcrp1-negative counterparts. Following transplantation of 104 cells, only the Bcrp1-positive cells formed tumors in NOD/SCID mice. When 105 or 106 cells were transplanted, the tumor incidence and the tumor mass were greater in the Bcrp1-positive groups than those in the Bcrp1-negative groups (P < 0.05). The Bcrp1-positive subpopulation cervical cancer stem cells.
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This work was supported by the National Natural Science Foundation of China (30901589).
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Zhang, SL., Wang, YS., Zhou, T. et al. Isolation and characterization of cancer stem cells from cervical cancer HeLa cells. Cytotechnology 64, 477–484 (2012). https://doi.org/10.1007/s10616-012-9436-3
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DOI: https://doi.org/10.1007/s10616-012-9436-3