Increased Shp1 protein and gene expression in diet-induced obesity and generation of hepatocyte-specific Shp1 knockout mice (Ptpn6H-KO). A: Shp1 protein detection by Western blotting in gastrocnemius muscle (Gastroc), epididymal white adipose tissue (EWAT), perirenal white adipose tissue (PWAT), and liver of Ptpn6f/f mice fed an SD or HFD for 8 weeks (n = 12–13 per diet group), with eEF2 and β-actin as loading controls. B: Quantitative PCR analysis of hepatic Shp1 gene expression with Actb as the sample control (n = 11–12 per diet group). Dotted lines on blots separate noncontiguous sections of the same gel (^P < 0.05 and ^^^P < 0.005 diet effect). Western blot detection of Shp1 in liver (C), purified hepatocytes and Kupffer cells (D) isolated from Ptpn6H-KO mice with either hemizygous (+/−) or homozygous (+/+) expression of Alb-Cre (Alb-Cre), and from their Alb-Cre (−/−) Ptpn6f/f littermates. Shp1 level in J774 macrophages (M) acted as a blotting control. α-Tubulin (C) and β-actin (D) were loading controls.