A Western blot analysis of whole-cell lysates was conducted as previously described [17 (link)]. The blots were probed with the following primary antibodies: phosphor-CDK2, total CDK2, CDK3, phosphor-CDC2, total CDC2, phospho-ERK1/2, phosphor-JNK1/2 (all from Cell Signaling), CDK4 (Santa Cruz Biotechnology), total p38, total ERK1/2, total JNK1/2, phospho-p38, total p38 MAPK (all from Promega), anti α-tubulin (Sigma) and anti-LC3 (MBL). Immunoreactive proteins were detected as previously described [17 (link)].
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