Ses issued by the Ministry of Health of China, and were approved by the Animal Experiment Administration Committee of Fourth Military Medical University. Mice were raised in the specific pathogen free (SPF) conditions on the C57BL/6 background, and were manipulated with every specific care to reduce the suffering of the mice during the experiments.Notch Regulates EEPCs and EOCs DifferentiallyFigure 5. RBP-J deficient EEPCs and EOCs showed opposite effects on the liver regeneration after PHx. Normal mice were subjected to PHx. On the day of the operation, mice were transfused through the tail veins with EEPCs (A) or EOCs (B) derived from the RBP-J2/2 or the RBP-J+/2 mice. The control (CON) mice were transfused with PBS. Liver index, serum ALB, ALT and AST of the recipient mice were determined on day 3, 5 and 7 after the transfusion. Bars = mean 6 SD; n = 4; *P,0.05. doi:10.1371/journal.pone.0043643.gMiceThe RBP-J-floxed mice and the Mx-Cre transgenic mice were as described [34]. The RBP-J-floxed mice were crossed with the Mx-Cre mice to obtain heterozygous and homozygous micebearing the Mx-Cre transgene (RBP+/f-MxCre and RBPf/fMxCre, as the control and the RBP-J knockout mice, respectively), as get tert-Butylhydroquinone genotyped by PCR [34]. The Cre-mediated deletion of RBP-J was induced by the intra-peritoneal injection of poly(I)-poly(C)Notch Regulates EEPCs and EOCs DifferentiallyFigure 6. RBP-J deficient EEPCs and EOCs showed opposite effects on cell proliferation and apoptosis during liver regeneration after PHx. Mice were subjected to PHx and were transfused with EEPCs (A) or EOCs (B) derived from the RBP-J2/2 or the RBP-J+/2 mice as above. Cell proliferation and apoptosis in the livers of the recipient mice were determined on day 3, 5 and 7 after the transfusion by using anti-Ki67 staining and TUNEL (Figure S3, S4), respectively. Ki67+ round nuclei and TUNEL+ cells were counted under microscope, and were compared between groups. Bars = mean 6 SD, n = 4, *P,0.05. doi:10.1371/journal.pone.0043643.g(Sigma, St. Louis, MI) into 5-week-old mice with suitable genotypes for eight times as described [34]. PHx was Finafloxacin cost performed as described previously [46].after the plating. Thereafter, medium was changed every 
3 days until the first passage 4 weeks after the plating. Cells were cultured further until colonies of EOCs containing cobblestone-appearing cells appeared between 6 and 8 weeks of the culture.Culture of EEPCs and EOCsBM mononuclear cells were obtained from 3-weeks-old male C57BL/6 mice. Total BM cells were suspended in HBSS (Invitrogen, Carlsbad, CA) and were 
overlaid onto Ficoll-Paque PLUS solution (Amersham Biosciences, Piscataway, NJ), and were centrifuged by using a swing-out rotor at 740 g for 30 min. Cells were collected from the interface, washed 3 times with the M199 medium (Invitrogen), and were resuspended in M199 supplemented with 20 fetal calf serum (FCS), 2 mM L-glutamine, 100 U/ml penicillin, 100 mg/ml streptomycin (Invitrogen), and 150 mg/ml endothelial cell growth supplement (ECGS, BD Biosciences, San Jose, CA), heparin (100 mg/ml), and 50 16574785 ng/ml human insulin-like growth factor-1 (IGF-1, Pepro Tech, Rocky Hill, NJ). The cells were seeded in 2 gelatin-coated 6-well plates at a density of 16107 cells/well, and were incubated at 37uC in 5 CO2-95 air in a humidified incubator. Non-adherent cells were removed 3 days later, and fresh medium was added. Cultures were maintained through day 10 and phenotype analysis of the cells was performed on day.Ses issued by the Ministry of Health of China, and were approved by the Animal Experiment Administration Committee of Fourth Military Medical University. Mice were raised in the specific pathogen free (SPF) conditions on the C57BL/6 background, and were manipulated with every specific care to reduce the suffering of the mice during the experiments.Notch Regulates EEPCs and EOCs DifferentiallyFigure 5. RBP-J deficient EEPCs and EOCs showed opposite effects on the liver regeneration after PHx. Normal mice were subjected to PHx. On the day of the operation, mice were transfused through the tail veins with EEPCs (A) or EOCs (B) derived from the RBP-J2/2 or the RBP-J+/2 mice. The control (CON) mice were transfused with PBS. Liver index, serum ALB, ALT and AST of the recipient mice were determined on day 3, 5 and 7 after the transfusion. Bars = mean 6 SD; n = 4; *P,0.05. doi:10.1371/journal.pone.0043643.gMiceThe RBP-J-floxed mice and the Mx-Cre transgenic mice were as described [34]. The RBP-J-floxed mice were crossed with the Mx-Cre mice to obtain heterozygous and homozygous micebearing the Mx-Cre transgene (RBP+/f-MxCre and RBPf/fMxCre, as the control and the RBP-J knockout mice, respectively), as genotyped by PCR [34]. The Cre-mediated deletion of RBP-J was induced by the intra-peritoneal injection of poly(I)-poly(C)Notch Regulates EEPCs and EOCs DifferentiallyFigure 6. RBP-J deficient EEPCs and EOCs showed opposite effects on cell proliferation and apoptosis during liver regeneration after PHx. Mice were subjected to PHx and were transfused with EEPCs (A) or EOCs (B) derived from the RBP-J2/2 or the RBP-J+/2 mice as above. Cell proliferation and apoptosis in the livers of the recipient mice were determined on day 3, 5 and 7 after the transfusion by using anti-Ki67 staining and TUNEL (Figure S3, S4), respectively. Ki67+ round nuclei and TUNEL+ cells were counted under microscope, and were compared between groups. Bars = mean 6 SD, n = 4, *P,0.05. doi:10.1371/journal.pone.0043643.g(Sigma, St. Louis, MI) into 5-week-old mice with suitable genotypes for eight times as described [34]. PHx was performed as described previously [46].after the plating. Thereafter, medium was changed every 3 days until the first passage 4 weeks after the plating. Cells were cultured further until colonies of EOCs containing cobblestone-appearing cells appeared between 6 and 8 weeks of the culture.Culture of EEPCs and EOCsBM mononuclear cells were obtained from 3-weeks-old male C57BL/6 mice. Total BM cells were suspended in HBSS (Invitrogen, Carlsbad, CA) and were overlaid onto Ficoll-Paque PLUS solution (Amersham Biosciences, Piscataway, NJ), and were centrifuged by using a swing-out rotor at 740 g for 30 min. Cells were collected from the interface, washed 3 times with the M199 medium (Invitrogen), and were resuspended in M199 supplemented with 20 fetal calf serum (FCS), 2 mM L-glutamine, 100 U/ml penicillin, 100 mg/ml streptomycin (Invitrogen), and 150 mg/ml endothelial cell growth supplement (ECGS, BD Biosciences, San Jose, CA), heparin (100 mg/ml), and 50 16574785 ng/ml human insulin-like growth factor-1 (IGF-1, Pepro Tech, Rocky Hill, NJ). The cells were seeded in 2 gelatin-coated 6-well plates at a density of 16107 cells/well, and were incubated at 37uC in 5 CO2-95 air in a humidified incubator. Non-adherent cells were removed 3 days later, and fresh medium was added. Cultures were maintained through day 10 and phenotype analysis of the cells was performed on day.
