Journal: Hepatology Communications
Article Title: Myeloid Endoplasmic Reticulum Resident Chaperone GP96 Facilitates Inflammation and Steatosis in Alcohol‐Associated Liver Disease
doi: 10.1002/hep4.1713
Figure Lengend Snippet: HSP90B1 and HSPA5 genes and GP96 are induced in ALD. (A) mRNA abundance of HSP90B1 and HSPA5 genes (in transcripts per million) was evaluated by RNA sequencing in patients with normal liver (n = 10), early ASH (n = 12), severe_AH (n = 17), explants_AH (n = 10), and livers from NAFLD (n = 10), HCV (n = 10), and comp_Cirrhosis (n = 9). (B) Representative immunohistochemistry of GP96 in human normal and alcoholic liver (magnification × 200). WT mice were fed with control liquid diet (pair‐fed) or diet containing 5% alcohol for 4 weeks. The mRNA expression of GP96 and GRP78 was measured by RT‐PCR in livers (C) and isolated hepatocytes (E) and liver macrophages (n = 4‐10). (D) Protein level of GP96 and GRP78 in liver lysate was analyzed by western blotting (n = 6). (F) BMDMs were treated with 25 mM ethanol and mRNA expression of GP96 and GRP78 (n = 6). (G) The protein level of GP96 was analyzed at different time intervals (n = 3). Data are represented as mean ± SEM. * P < 0.05, ** P < 0.01, *** P < 0.001, **** P < 0.0001. Abbreviations: EtOH, alcohol; comp, compensated; tpm, transcripts per million.
Article Snippet: Antibodies used were GP96 (SMC‐105; StressMarq Biosciences, Cadboro, Canada), GRP78 (CST‐3183; Cell Signaling Technology), peroxisome proliferator‐activated receptor alpha (PPAR‐α) (sc‐9000; Santa Cruz Biotechnology, Dallas, TX), CyP2e1 (AB1252; MilliporeSigma, Burlington, MA), calnexin (ab2295; Abcam, Cambridge, United Kingdom), C/EBP‐homologous protein (CHOP) (sc‐7351; Santa Cruz Biotechnology), ATF6α (sc‐166659; Santa Cruz Biotechnology), ATF4 (10835‐1‐AP; Proteintech, Rosemont, IL), ATF3 (sc‐81189; Santa Cruz Biotechnology), β‐actin (ab6276; Abcam), tubulin (ab6046; Abcam), and TATA‐box protein (TBP) (ab818, Abcam).
Techniques: RNA Sequencing Assay, Immunohistochemistry, Expressing, Reverse Transcription Polymerase Chain Reaction, Isolation, Western Blot