Petitive injured mice were randomized into two groups to receive iPS (n = 8) or rIP-10 (n = 8) treatment. The survivals of each group were observed until 72 h. Both rIP-10 and IPS treated groups had significant higher survival rates (*p,0.05, n = 6 in each group). doi:10.1371/journal.pone.0050577.gthe heart and the liver was harvested and prepared for subsequent 
experiments including histochemistry, cytokine assay, protein and gene expression analysis. For flow cytometry and primary liver cells studies, total liver cells were isolated at 24 h post-injury from normal and the CCl4-injured mice received vehicle or iPS transfusion. For neutralizing antibody study, 12926553 mice were given two doses (0.5 mg/dose, i.p.) of anti-IP-10 antibodies (Abcam, ab9938, Cambridge, UK) at 4 h before and 4 h after injury. For 72 h survival study, mice received repetitive CCl4 injury at 0, 24 and 48 h. The iPS (26106 cells/in 100 ml PBS) or recombinant IP10 (rIP-10, 0.5 ng, Thiazole Orange web PreproTech, Rocky Hill, NJ, USA) were given once at 4 h and the mortality rate of mice was observed until 72 h post-injury. All animals received humane care according to the Guide for the Care and Use of Laboratory Animals prepared by the National Academy of Sciences (NIH publication no. 86?3, revised 1985) and approved by the Institutional Oltipraz animal Care and Use Committee (IACUC) of Taipei Veterans General Hospital (VGH99-173). All experiments adhered to the American Physiological Society Guiding Principles for the Care and Use of Laboratory Animals.areas) per animal were photo-taken under microscopy at x200 magnification. The mean numbers of BrdU-positive or Ki67positive cells of per area per animal were used in statistical analysis.Fluorescence Cell LabelingIn serum-free medium, 16106 mouse iPS were incubated with 1,19-dioctadecyl-3,3,39,39-tetramethylindocarbocyanine perchlorate, (10 mM, VybrantH DiI, Molecular Probes, Eugene, OR) for 15 minutes and centrifuged at 1500 rpm for 5 minutes at 37uC. The supernatant was later removed and the cells were resuspended in PBS for experiment. The labeling efficiency of DiI on iPS was .99 using flow cytometry.Preparations of Total Liver Cells and Flow Cytometry StudiesMouse total liver cells, i.e. the primary hepatocytes (HC) and nonparenchymal cells (Npc), were prepared by collagenase perfusion and isodensity gradient centrifugation. Briefly, under anesthesia the portal vein was inserted by 27-gauge catheter and the inferior vena cava was cut. The liver was perfused by collagenase digestion buffer, which is Ca2+, Mg2+-free Hank’s balanced salt solution (HBSS) containing collagenase type IV (3 mg/30 ml, Sigma) at 37uC. After perfusion, the digested liver was excised, dispersed and filtered through 100 mm cell strainers (BD Biosciences). The 15755315 HC were separated from the Npc by sequential low speed centrifugation at 50 g. The viable HC and the Npc were further purified by the gradient centrifugation using Optiprep (Sigma) according to the manufacturer’s recommendation. For the flow cytometry study, total liver cells were isolated by the same perfusion technique. After perfusion, the liver was homogenized with collagenase digestion buffer and incubated at 37uC for 40 min under gentle agitation. The digested liver homogenate was re-suspended in single cell suspension for FACS analysis. The red blood cells were removed by ACK lysing buffer.Cell Cultures StudiesMouse germline-competent iPS were provided by Kyoto University (Dr. Shinya Yamanaka) and RIKEN BRC, Ja.Petitive injured mice were randomized into two groups to receive iPS (n = 8) or rIP-10 (n = 8) treatment. The survivals of each group were observed until 72 h. Both rIP-10 and IPS treated groups had significant higher survival rates (*p,0.05, n = 6 in each group). doi:10.1371/journal.pone.0050577.gthe heart and the liver was harvested and prepared for subsequent experiments including histochemistry, cytokine assay, protein and gene expression analysis. For flow cytometry and primary liver cells studies, total liver cells were isolated at 24 h post-injury from normal and the CCl4-injured mice received vehicle or iPS transfusion. For neutralizing antibody study, 12926553 mice were given two doses (0.5 mg/dose, i.p.) of anti-IP-10 antibodies (Abcam, ab9938, Cambridge, UK) at 4 h before and 4 h after injury. For 72 h survival study, mice received repetitive CCl4 injury at 0, 24 and 48 h. The iPS (26106 cells/in 100 ml PBS) or recombinant IP10 (rIP-10, 0.5 ng, PreproTech, Rocky Hill, NJ, USA) were given once at 4 h and the mortality rate of mice was observed until 72 h post-injury. All animals received humane care according to the Guide for the Care and Use of Laboratory Animals prepared by the National Academy of Sciences (NIH publication no. 86?3, revised 1985) and approved by the Institutional Animal Care and Use Committee (IACUC) of Taipei Veterans General Hospital (VGH99-173). All experiments adhered to the American Physiological Society Guiding Principles for the Care and Use of Laboratory Animals.areas) per animal were photo-taken under microscopy at x200 magnification. The mean numbers of BrdU-positive or Ki67positive cells of per area per animal were used in statistical analysis.Fluorescence Cell LabelingIn serum-free medium, 16106 mouse iPS were incubated with 1,19-dioctadecyl-3,3,39,39-tetramethylindocarbocyanine perchlorate, (10 mM, VybrantH DiI, Molecular Probes, Eugene, OR) for 15 minutes and centrifuged at 1500 rpm for 5 minutes at 37uC. The supernatant was later removed and the cells were resuspended in PBS for experiment. The labeling efficiency of DiI on iPS was .99 
using flow cytometry.Preparations of Total Liver Cells and Flow Cytometry StudiesMouse total liver cells, i.e. the primary hepatocytes (HC) and nonparenchymal cells (Npc), were prepared by collagenase perfusion and isodensity gradient centrifugation. Briefly, under anesthesia the portal vein was inserted by 27-gauge catheter and the inferior vena cava was cut. The liver was perfused by collagenase digestion buffer, which is Ca2+, Mg2+-free Hank’s balanced salt solution (HBSS) containing collagenase type IV (3 mg/30 ml, Sigma) at 37uC. After perfusion, the digested liver was excised, dispersed and filtered through 100 mm cell strainers (BD Biosciences). The 15755315 HC were separated from the Npc by sequential low speed centrifugation at 50 g. The viable HC and the Npc were further purified by the gradient centrifugation using Optiprep (Sigma) according to the manufacturer’s recommendation. For the flow cytometry study, total liver cells were isolated by the same perfusion technique. After perfusion, the liver was homogenized with collagenase digestion buffer and incubated at 37uC for 40 min under gentle agitation. The digested liver homogenate was re-suspended in single cell suspension for FACS analysis. The red blood cells were removed by ACK lysing buffer.Cell Cultures StudiesMouse germline-competent iPS were provided by Kyoto University (Dr. Shinya Yamanaka) and RIKEN BRC, Ja.
