Can we get any definite pattern between these two assays? Eg. Early apoptosis will reflect in arrest in a particular phase (G0/G1, S, G2/M)? It would be great if you have any nice reference too. Thanks in advance.
Usually,we do PI staining assay to assess cell cycle phases. In each phase, there are checkpoints inwhich several proteins, such as Rb1, P53, cyclines and cycline dependent-kinases, control cell cycle process, Briefly, if there is any DNA damage, these proteins try to repair it. If they failed in reaparing, cell will undergo apoptosis wich can be revealed by using Annexine V .