A reliable parameter to standardize the scoring of stem cell spheres.

A reliable parameter to standardize the scoring of stem cell spheres.
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DOI:
10.1371/journal.pone.0127348
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发表时间:
2015
期刊:
影响因子:
3.7
通讯作者:
Sun Y
Sun Y
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Zhou X;Wang G;Sun Y

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球体形成测定广泛用于选择和富集正常干细胞或癌症干细胞(CSC),也称为肿瘤起始细胞(TIC),基于它们在无血清悬浮培养物中生长以进行克隆增殖的能力。然而,没有标准化的参数来准确地对球体进行评分,这应该通过球体的数量和大小来反映。在这里,我们定义了一个新的参数,指定为标准化球评分(SSS),这是表示由选定的球除以最初接种的细胞数的总体积。SSS在定量来自癌细胞系的肿瘤球和来自小鼠胚胎干细胞的胚胎体(EB)中得到验证,具有高灵敏度和可重复性。
Sphere formation assay is widely used in selection and enrichment of normal stem cells or cancer stem cells (CSCs), also known as tumor initiating cells (TICs), based on their ability to grow in serum-free suspension culture for clonal proliferation. However, there is no standardized parameter to accurately score the spheres, which should be reflected by both the number and size of the spheres. Here we define a novel parameter, designated as Standardized Sphere Score (SSS), which is expressed by the total volume of selected spheres divided by the number of cells initially plated. SSS was validated in quantification of both tumor spheres from cancer cell lines and embryonic bodies (EB) from mouse embryonic stem cells with high sensitivity and reproducibility.
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