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Kinetic Multi-Spheroid Assays


           IncuCyte S3 multi-spheroid automated image acquisition and   Segmented DF Brightfield images compare vehicle or CMP treated
           analysis software tools enable label-free, kinetic quantification of   conditions at 168 h. Time courses show the individual well total
           growing and shrinking multi-spheroids over time.  Figure 4 (below)   Brightfield Object area (μm2) (y-axis) over 168 h and illustrate
           illustrates the growth curves of three multi-spheroid tumor models   specific cell type-dependent kinetic profile of spheroid growth
           over several days and demonstrates the inhibitory effects of the   and shrinkage. Data were collected over 168 hour period at 6 hour
           cytotoxic drug camptothecin (CMP) on their growth trajectories.   intervals. All images captured at 10x magnification. Each data
                                                                  point represents mean ± SEM, n=6 wells.





                                       Vehicle                        CMP (1µM)






                    A549













                  MCF-7














           MDA-MB-231








           Figure 4. Real-time quantification of the growth of A549, MCF-7 and MDA-MB-231 spheroids. Cells were seeded in flat-bottom 96-well plates (2,000 cells
           per well) on a bed of Matrigel® and spheroids allowed to form (72 h). Spheroids were treated with either vehicle (0.1% DMSO) or CMP (10 μM).



















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