To identify central protein kinases that potentially promote the maturation, we chemically induced liver progenitor cells (CLiPs) from mouse hepatocytes using a previously established protocol, and profiled the phosphoproteome and proteome of freshly isolated primary mouse hepatocytes (MHs) and ALBUMIN+ hepatocytes (CLiP-Hep) cells. To systematically interrogate the early regulatory events of hepatic reprogramming, we profiled the Phosphoproteome and proteome in human dermal fibroblasts (HDFs) at 2.25 days (FHH-2.25d) and 5 days (FHH-5d) after infection of lenti-virus encoding three liver-specific transcription factors, FOXA3, HNF1A and HNF4A (FHH). In this analysis, HDF infected with lenti-virus expressing GFP for 2.25 days (GFP) were used as control.