Journal: Cellular and Molecular Gastroenterology and Hepatology
Article Title: XBP1 Facilitating NF-κB-p65 Nuclear Translocation Promotes Macrophage-Originated Sterile Inflammation Via Regulating MT2 Transcription in the Ischemia/Reperfusion Liver
doi: 10.1016/j.jcmgh.2024.101402
Figure Lengend Snippet: MT2 inhibition abolishes XBP1 M-KO -related anti-inflammatory features in vivo and in vitro. The IRI model mice were subjected to 90-minute ischemia, followed by 6-hour reperfusion. ( A ) XBP1 M-KO mice were injected with siRNA-MT2 by caudal vein before establishing hepatic IRI model. ( B ) Western blotting analysis for the expressions of MT2 in nonparenchymal cells (NPC) after siRNA-MT2/siRNA-NC was injected into mice tail vein. ( C ) Serum ALT and AST levels were measured. ( D ) Detection of TNF-α, IL1β, IL6, iNOS, and IL10 in the ischemic liver of mice by qRT-PCR. ( E ) HE DCFH, TUNEL, F4/80, CD11b, and Ly6G staining, and ( F, H ) their quantitations. ( G ) Expressions of Bcl-2, Bcl-xl, C-caspase 3, P-NF-κBp65, and NF-κBp65 in IR liver tissues based on Western blotting analysis. ( I ) Detection of TNF-α, IL1β, IL6, iNOS, and IL10 in H/R cocultured XBP1 M-KO BMMs through qRT-PCR. ( J ) Western blotting analysis for the expressions of MT2 in BMMs after transfected with siRNA-MT2/siRNA-NC. ( K ) Migratory abilities of XBP1 M-KO BMMs cocultured for 24 hours based on the Transwell assay. ( L ) Expressions of NLRP3, MT2, IKBα, P-NF-κBp65, and NF-κBp65 in H/R cocultured XBP1 M-KO BMMs using Western blotting assay. n = 6, ∗ P < .05 by Student t test.
Article Snippet: The Suzuki score, which consists of 3 aspects (hepatocyte necrosis, sinusoidal congestion, and ballooning degeneration), was rated on a scale of 1 to 4, as defined by Suzuki et al. Hepatic macrophages and neutrophils were analyzed by IHC staining and incubation with primary rat anti-mouse F4/80, CD11b and Ly6G mAbs (Cell Signaling Technology).
Techniques: Inhibition, In Vivo, In Vitro, Injection, Western Blot, Quantitative RT-PCR, TUNEL Assay, Staining, Transfection, Transwell Assay