EMSA was performed to measure the activation of CAR and c-myc. Pooled nuclear samples (n = 3) from ILK/ liver−/− and WT mice were used for performing EMSA using a commercial kit from Signosis (Sunnyvale, CA). Biotinylated DNA binding consensus sequence were also purchased from Signosis. Paraffin-embedded liver sections (4 μm thick) were used for immunohistochemical staining. Antigen retrieval was achieved by heating the slides in the microwave at high power in 1× citrate buffer for 10 minutes. The tissue sections were blocked in blue blocker for 20 minutes followed by incubation with mouse PCNA antibody overnight at 4°C. The primary antibody

was then linked to biotinylated secondary antibody click here followed by routine avidin-biotin complex method. Diaminobenzidine was used as the chromogen, which resulted in a brown reaction product. PCNA-positive cells were counted in low-power fields (200×) in four sections from four different knockout or control livers. RNA was extracted from frozen liver tissues with Trizol (Invitrogen) according to the manufacturer’s instructions. RNA,

5 μg, was reverse transcribed to complementary DNA (cDNA) with Superscript III reverse transcriptase (Invitrogen). Standard PCR was performed with Taq polymerase (Qiagen, CA). The primers for hepatocyte growth factor (HGF) were bought from SA Bioscience (Frederick, MD). PCR products were resolved on 2% agarose gels and visualized with ethidium bromide. Expression levels of UGT1A1 MCE were determined by quantitative RT-PCR (qRT-PCR) using SYBR SB203580 datasheet green and levels were normalized relative to expression of cyclophillin in each sample. Fold change in gene expression was calculated by using the 2(-ΔΔCt) method. Reverse-transcribed samples were amplified in parallel on an ABI prism 7000 SDS instrument (Applied Biosystems,

Foster City, CA). qRT-PCR for each sample was performed in triplicate in a 20-μL reaction with 50 ng of cDNA, 5 picomoles of each primer, and 1× SYBR green PCR mix (Applied Biosystems). The standard conditions for real-time PCR were as follows: 2 minutes at 50°C, 10 minutes at 95°C, followed by 40 cycles of 15 seconds denaturation at 95°C, and elongation at 60°C for 45 seconds. A dissociation curve analysis was performed at the end of every run. A no-RT and a no-template control was also included in every run. The liver-to-body weight ratios were measured in WT and ILK/liver−/− mice at days 1, 2, 3, 5, and 7 after TCPOBOP administration. The WT showed a maximum of 2.5-fold increase (day 5) in liver-to-body weight ratio as compared to 0 day (Fig. 1B). On the other hand, the ILK/liver−/− mice showed a maximum of 3.5-fold increase (day 7) in liver-to-body weight ratio as compared to 0 day. By day 7 the WT mice showed a 2.5-fold increase in liver weight, whereas the ILK/liver−/− mice showed a 3.7-fold increase (Fig. 1A).