MagCellect™人CD24–CD44+乳腺癌干细胞分选试剂盒
R&D Systems 提供了一些专为分离与肿瘤相关细胞群而设计的试剂盒,其中包括乳腺癌干细胞分选试剂盒和分离表达特定癌症相关标志物细胞的其它多个试剂盒。MagCellectTM人CD24–CD44+乳腺癌干细胞分选试剂盒(目录号 MAGH111)可用于分离数量较少的人乳腺癌细胞,这些癌细胞具有在小鼠中形成新肿瘤的独特能力 1。此试剂盒采用负向选择和正向选择相结合的两步法操作:首先,通过负向选择富集CD24low/–细胞,而将不想要的CD24+细胞通过磁性去除;随后,利用生物素化的人CD44抗体、链霉亲和素结合的磁珠和MagCellectTM 磁力架(目录号 MAG997,或类似产品),从CD24low/–细胞群体中分选出CD44+细胞。试剂盒还提供了荧光素结合的人CD24和CD44检测抗体,可用于评估富集效率。
Reference
1. Al-Hajj, M. et al. (2003) Proc. Natl. Acad. Sci. USA 100:3983.
检测原理:
利用MagCellect TMCD24–CD44+ 乳腺癌干细胞分选试剂盒分离得到的CD24low/–CD44+ 细胞的检测. A small population of CD24low/–CD44+ cells was isolated from MCF-7 human breast adenocarcinoma cells using the MagCellect CD24–CD44+ Breast Cancer Stem Cell Isolation Kit (Catalog # MAGH111). CD24low/–CD44+ cells (upper left quadrant), before (A) and after (B) enrichment, were detected by double-staining with APCconjugated Mouse Anti-Human CD24 and PE-conjugated Mouse Anti-Human CD44 Detection Antibodies (both provided in the kit). A histogram profiling the enrichment of CD24low/– cells (filled histogram) from the original cell population (open histogram) is shown (C).
编辑: helen