Il11ra-floxed mice, in which exons 4–7 of the Il11ra1 gene were flanked by loxP sites, were created using the CRISPR/Cas9 system as previously described42. To induce the specific deletion of Il11ra1 in hepatocytes, 6–8-week-old male homozygous Il11ra1-floxed mice were intravenously injected with AAV8-Alb-Cre virus (4 × 1011 gc); a similar amount of AAV8-Alb-Null virus were injected into homozygous Il11ra1-floxed mice as controls. The AAV8-injected mice were allowed to recover for 3 weeks prior to HFMCD, WDF, or NC feeding. Knockdown efficiency was determined by western blotting of hepatic IL11RA.
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