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Preliminary investigation on the correlation between circulating tumor cells and cancer stem cells in patients with breast cancer

机译:乳腺癌患者循环肿瘤细胞与癌症干细胞相关性的初步调查

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In this study, we used anti-epithelial cell adhesion molecule binding to the epithelial cells of peripheral blood mononuclear cells (PBMC) in breast cancer patients, selected the epithelial cells by magnetic-activated cell separation (MACS), then analyzed the enriched epithelial cells labeled with anti-CK-FITC, anti-CD44-PE and anti-CD24-PE-cy5 respectively by FCM. We used the standard that the CK+ cells were testified as circulating tumor cells (CTC) and the CK+ CD44+ CD24-/low cells were attributed to CTC-cancer stem cells (CTC-CSC) in breast cancer patients respectively. The results indicated that the CK+ tumor cells were detected in 19 of 26 patients and the CTC-CSC were identified in 18 of the 19 patients with CTC (94.74%), and the percentage of CTC-CSC in CTC was 19.01%. The results also suggested that the breast cancer patients with the high-rate CK+ tumor cells were in the advanced TNM stage III and the patients with the low-rate CK+ cells were in the modest TNM stage I respectively. The difference between the two groups was statistically significant (p< 0.001). We concluded that there was a significant correlation between CTC and CTC-CSC in breast cancer metastasis.
机译:在该研究中,我们使用抗上皮细胞粘附分子与乳腺癌患者外周血单核细胞(PBMC)的上皮细胞结合,通过磁性活化细胞分离(MAC)选​​择上皮细胞,然后分析富集的上皮细胞分别通过FCM标记抗CK-FITC,抗CD44-PE-CY5。我们使用标准的标准,即CK +细胞被证实为循环肿瘤细胞(CTC),CK + CD44 + CD24- /低细胞分别归因于乳腺癌患者的CTC-癌症干细胞(CTC-CSC)。结果表明,在26例患者中检测到CK +肿瘤细胞,CTC-CSC在19例CTC患者(94.74%)中的18例中鉴定,CTC中CTC-CSC的百分比为19.01%。结果还表明,乳腺癌患者的高速CK +肿瘤细胞患者在先进的TNM阶段III中,并且患有低速率CK +细胞的患者分别在适度的TNM阶段I中。两组之间的差异有统计学意义(P <0.001)。我们得出结论,CTC和CTC-CSC在乳腺癌转移中存在显着相关性。

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