EdU staining was done using Click-iT™ EdU Cell Proliferation Imaging Kit (ThermoFisher Scientific) according to manufacturer’s instructions. Annexin V/DAPI staining was done as previously described68 (link),69 (link). For assessing the effects of SOC on G1 arrest, T47D cells treated with 5 µM of SOC for 24 hours were fixed in ethanol for 30 min on ice and stained with DAPI. For analyzing cell cycle distribution upon SOC treatment at early time points, BrdU/7AAD Flow kit (BD Biosciences) was utilized based on manufacturer’s instructions.
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