The following antibodies were used: anti-PLK4 (Rabbit, 1:1,000), and anti-PCNA (Mouse, 1:1,000) from Abcam (Cambridge, the United Kingdom); anti-p-p38 (Rabbit, 1:1,000), anti-p38 (Rabbit, 1:1,000), anti-p-ERK (Rabbit, 1:4,000), anti-ERK (Rabbit, 1:1,000), anti-Beclin1 (Rabbit, 1:1000), anti-Atg5 (Rabbit, 1:1000), anti-LC3B (Rabbit, 1:1000) and anti-SQSTM1/p62 (Rabbit, 1:1000) from Cell Signaling Technology (Danvers, USA); anti-caspase 3 (Rabbit, 1:500) from Proteintech (Chicago, IL, USA); anti-Bax (Rabbit, 1:1000) and anti-GAPDH (Mouse, 1:1000), anti-CDK4 (Mouse, 1:1000), anti-CDK6 (Rabbit, 1:1000) from Bioss (Beijing, China). The steps for WB were based on previously described methods17 (link).
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