Journal: Acta Pharmaceutica Sinica. B
Article Title: PPAR α affects hepatic lipid homeostasis by perturbing necroptosis signals in the intestinal epithelium
doi: 10.1016/j.apsb.2024.08.021
Figure Lengend Snippet: Butyric acid attenuates PPAR α -induced necroptosis in HIEC-6 cells and ameliorates hepatic steatosis in Pparα ΔIE mice. (A) Relative CREB3L3 mRNA level in HIEC-6 cells transfected with the PPAR α expression vector ( n = 3). (B) Relative mRNA level of apoptotic and necroptosis signaling components in HIEC-6 cells transfected with the CREB3L3 expression vector ( n = 3). (C) Relative mRNA level of apoptotic and necroptosis signaling components in HIEC-6 cells treated with TNF- α ( n = 3). (D) Effects of GW6471 on RIPK3 and MLKL promoter-driven luciferase activities in human intestinal epithelial HIEC-6 cells ( n = 3). (E) Relative CREB3L3 mRNA level in HIEC-6 cells treated with butyric acid ( n = 3). (F) Relative mRNA level of necroptosis signaling components in HIEC-6 cells treated with TNF- α and butyric acid ( n = 3). (G) Schematic representation of the experimental design for butyric acid treatment. H, Relative CREB3L3 mRNA level in Pparα fl/fl and Pparα ΔIE mice treated with butyric acid ( n = 5). (I) Relative mRNA level of necroptosis signaling components in Pparα ΔIE mice treated with butyric acid ( n = 5). (J) Representative immunohistochemical staining for cleaved-caspase 3 and MLKL, and immunofluorescent staining for cleaved-caspase 8 (green), p-RIPK3 (red), and p-MLKL (red) in the ileum after butyric acid treatment ( n = 5). (K) Representative images stained with H&E and Oil Red O, and immunofluorescent staining for F4/80 (red) in liver tissue after butyric acid treatment ( n = 5). (L) Relative mRNA levels of genes related with lipolysis, lipogenesis, and lipid droplet proteins in the liver after butyric acid treatment ( n = 5). (M) Triglyceride in serum and liver after butyric acid treatment ( n = 10). (N) Hepatic levels of cytokines in mice after butyric acid treatment ( n = 5). (O) Protein levels of F4/80 in the liver after butyric acid treatment ( n = 3). (P) Relative mRNA levels of F4/80 , Clec4f , and Cd14 in the liver after butyric acid treatment ( n = 5). Buty: butyric acid. Data are shown as the mean ± SD. For the two groups, statistical significance was tested by unpaired Student's t -test; for more than two groups, statistical significance was tested by one-way ANOVA followed by the least significant difference (LSD) test; ∗P < 0.05, ∗∗P < 0.01, ∗∗∗P < 0.001.
Article Snippet: These samples were incubated overnight with a polyclonal rabbit anti-mouse F4/80 (1:1000, #A1256, ABclonal), polyclonal rabbit anti-mouse APOA1 (1:2000, #A14211, ABclonal), polyclonal rabbit anti-mouse ABCA1 (1:1000, #NB400-105, Novus Biological, Centennial), monoclonal rabbit anti-mouse CD14 (1:1000, #A19011, ABclonal), or polyclonal rabbit anti-mouse PV1 (1:2000, #A15906, ABclonal).
Techniques: Transfection, Expressing, Plasmid Preparation, Luciferase, Immunohistochemical staining, Staining