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- W2895346321 abstract "Background: Osteosarcoma cancer stem cells (CSCs) are defined as a subpopulation of osteosarcoma cells, which have the ability of self-renewal, proliferation and differentiation. This study aimed to identify CSCs from human osteosarcoma in vitro . Methods: Osteosarcoma CSCs were isolated and cultured with sphere-forming assay technique on an ultra-low well attachment surface plate. After sarcosphere colonies were formed, we conducted reverse transcriptase-polymerase chain reaction (RT-PCR) to detect the expression of genes of embryonic stem cells such as NANOG , Oct3/4, STAT3 and gene of MSC CD133. Immunofluorescence analysis (IFA) of alkaline phosphatase (ALP), osteocalcin, and CD 133 was also performed to see the expression of osteosarcoma CSC surface protein with immuno-enzymatic staining principle. We also performed alizarin red staining to evaluate calcification in osteosarcoma CSCs. Results: The culture sphere-of the osteosarcoma cells showed three dimension round shaped colonies (sarcospheres) in slightly hypoxicand serum free condition which was not attached to the substrate with tight density. RT-PCR demonstrated that sarcospheres expressed genes which encode NANOG , Oct3/4 STAT 3, but not for CD 133. IFA showed positive protein expression of ALP, osteocalcin and CD 133 which was moderate, strong, and weak positive respectively. Sarcospheres also had a positive reaction toward alizarin red staining. Conclusion: Osteosarcoma CSCs could be isolated from human osteosarcoma by sphere-forming assay technique and characterized by the expression of genes of embryonic stem cells,such as NANOG , Oct3/4, STAT3 and IFA of ALP, osteocalcin, and CD 133." @default.
- W2895346321 created "2018-10-12" @default.
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- W2895346321 date "2018-09-28" @default.
- W2895346321 modified "2023-10-16" @default.
- W2895346321 title "Isolation, Culture and Characterization of Cancer Stem Cells from Primary Osteosarcoma" @default.
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- W2895346321 doi "https://doi.org/10.2174/1876893801805010001" @default.
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