Journal: Frontiers in Immunology
Article Title: An in vitro model to study immune activation, epithelial disruption and stromal remodelling in inflammatory bowel disease and fistulising Crohn’s disease
doi: 10.3389/fimmu.2024.1357690
Figure Lengend Snippet: Development and characterisation of in vitro IBD mucosal constructs. (A) Workflow schematic for model set-up using Alvetex ® Scaffold. (B) H&E image of unstimulated IBD model and IBD human tissue (HT) for comparison. Scale bars 50 μm. (C) TEM micrographs of epithelial polarisation (C ,a ) , and microvilli (m) brush border with clear rootlet (r) visibility (C ,b ) , apical-junctional complexes consisting of tight junction (tj), adherens junction (aj) and desmosome (dm) (C ,c ) , basement membrane (bm) formation with vesicle exocytosis (ve) (C ,d ) , and the lamina propria composition containing fibroblasts (f) and longitudinal collagen and transverse collagen (lc and tc) (C ,e ) . Scale bars: 10 μm (C ,a ) , 1 μm ( C ,b + C ,d), 0.5 μm (C ,c ) and 5 μm (C ,e ) . (D) Representative IF images of fibroblast markers ( D ,a + D ,b), pan-macrophage marker CD68 (D ,c ) and ECM protein expression ( D ,d, D ,e + D ,f) within Alvetex ® lamina propria-like compartment. Scale bars 50 μm. (E) IF staining of epithelial and polarisation markers in IBD model epithelial tissue. Scale bars 50 μm.
Article Snippet: In vitro IBD mucosal constructs were generated using Alvetex ® Scaffold inserts (Reprocell Europe Ltd, UK).
Techniques: In Vitro, Construct, Comparison, Membrane, Marker, Expressing, Staining