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. 2012 Feb 23;7(2):e31846. doi: 10.1371/journal.pone.0031846

Figure 3. Deletion of p21 partially restores proliferation of DDB1-deficient hepatocytes and alleviates OC activation.

Figure 3

(A) Western blot for some substrates of DDB1-Cul4A ubiquitin ligase using lysates of hepatocytes isolated from DDB1F/F and DDB1F/F;Alb-Cre+/+ mice. (B) Western blot for DDB1 and p21 using lysates of cytoplasmic fraction (C) and nuclear fraction (N) prepared from MEFs. (C) IHC staining for DDB1 and Ki67 on liver sections from DDB1F/F;Alb-Cre+/−, DDB1F/F;p21−/− and DDB1F/F;Alb-Cre+/−;p21−/− mice. (D) Co-IF staining for A6 and DDB1 on DDB1F/F;p21−/− and DDB1F/F;Alb-Cre+/−;p21−/− liver sections. Arrows in DDB1F/F;Alb-Cre+/−;p21−/− mice indicate A6 positive oval cells.