For the detection of invasion in live cells, mammospheres were seeded (100 µL/well) into a 96-well plate and exposed to GW6471 treatment. Then Matrigel was added on top at a final assay concentration of 50%. Then spheroids were monitored for 72 h in the IncuCyte analyzer. The images acquired were analyzed by the Incucyte ZOOM live-cell analysis system (Essen Bioscience, Newark, UK), and the data were reported as invading cell area, bright field (BF), and area *104 (µm2).
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