Journal: Frontiers in Pharmacology
Article Title: Atractylenolide-I restore intestinal barrier function by targeting the S100A9/AMPK/mTOR signaling pathway
doi: 10.3389/fphar.2025.1530109
Figure Lengend Snippet: AT-1 regulated the expression of TJ proteins in colonic epithelial cells through AMPK/mTOR pathway. (A,B) NCM460 cells were pretreated with Dorsomorphin(200 ng/mL) and AT-1 (10 μM) for 1 h, followed with S100A9 (1 μg/mL) for 24 h, the level of ZO-1, claudin-1, AMPKα, p- AMPKα, mTOR, p-mTOR, was evaluated by Western blot. (C) NCM460 cells were pretreated with BAPTA-AM (5 μM) and AT-1 (10 μM) for 1 h, followed with S100A9 (1 μg/mL) for 24 h, then detected by flow cytometry assay. (D,E) NCM460 cells were pretreated with BAPTA-AM (5 μM) and AT-1 (10 μM) for 1 h, followed with S100A9 (1 μg/mL) for 24 h, the level of ZO-1, claudin-1, AMPKα, p- AMPKα, mTOR, p-mTOR, was evaluated by Western blot. ###P < 0.001 vs. Blank group; * p < 0.05 and *** p < 0.001 vs. S100A9 group.
Article Snippet: Atractylenolide-I (AT-1, C15H18O2, MW:230.32, ≥98% purity) was purchased from Chengdu Push Biotech (Chengdu, China); sodium butyrate (NaB, C4H7NaO2, MW:110.09, ≥98% purity) was purchased from Macklin Biochemical Technology (Shanghai, China); dextran sulfate sodium (DSS) was purchased from MP Biomedicals (Solon, OH, USA); myeloperoxidase (MPO) Kit was purchased from Jiangsu Meimian industrial Co., Ltd (Nanjing, China); fluorescein isothiocyanate-labeled dextran (FD4, average mol wt 3,000–5,000) was purchased from Sigma Aldrich (St. Louis, MO, USA); recombinant human S100A9 protein, dorsomorphin and BAPTA-AM were purchased from Med Chem Express (Shanghai, China); ZO-1, occludin, claudin-1, MLCK, β-actin, HA, mTOR, AMPK-α, ERK1/2, phospho-ERK1/2 (Thr202/Tyr204), p38 MAPK, phospho-p38 MAPK (Thr180/Tyr182), Flag primary antibodies, HRP-conjugated Affinipure Goat Anti-Mouse IgG(H+L), HRP-conjugated Affinipure Goat Anti-Rabbit IgG(H+L) were purchased from Proteintech (Wuhan, China); SAPK/JNK, phospho-SAPK/JNK (Thr183/Tyr185), phospho-AMPKα (Thr172), myosin light chain 2, phospho-myosin light chain 2 (Thr18/Ser19) primary antibodies were purchased from Cell Signaling Technology (Danvers, MA, USA); rhodamine (TRITC) Affinipure goat anti-mouse IgG(H+L), FITC-AffiniPure rabbit anti-rabbit IgG (H+L) were purchased from Yeasen Biotechnology (Shanghai, China); DMEM, RPMI 1640 medium, pen/strep, fetal bovine serum (FBS), opti-MEM medium were purchased from Gibco BRL (Gaithersburg, MD, USA); total protein extraction kit were purchased from KeyGenbio (Nanjing, China); fastPure complex tissue/cell total RNA isolation kit, hiScriptTM QRTSuperMix and AceQTMqPCR SYBR green master mix were purchased from Vazyme Biotech (Nanjing, China); lipofectamineTM 3000 transfection reagent were purchased from Thermo Fisher Scientific (Waltham, MA, USA); quickBlockTM blocking buffer for immunol staining was purchased from Beyotime (Shanghai, China); PBS, rapid sealing solution (Protein free) were purchased from Servicebio (Wuhan, China); other chemical products used were of the analytical grade available.
Techniques: Expressing, Western Blot, Flow Cytometry