Journal: Bioactive Materials
Article Title: Harnessing the gut–immune–joint axis: Oral microalgae-based thermoresponsive microspheres enhance intra-articular therapy for rheumatoid arthritis
doi: 10.1016/j.bioactmat.2026.01.037
Figure Lengend Snippet: Evaluation of the protective effects of CG@GelMA on FSN-induced intestinal epithelial barrier disruption in vitro . (A) Immunofluorescence staining of Claudin-1 in Caco-2 monolayers under different treatments. Scale bar: 100 μm. (B) Relative fluorescence intensity of Claudin-1. (C) Immunofluorescence staining of Occludin in Caco-2 monolayers. Scale bar: 100 μm. (D) Relative fluorescence intensity of Occludin. (E) Immunofluorescence staining of ZO-1 in Caco-2 monolayers. Scale bar: 100 μm. (F) Relative fluorescence intensity of ZO-1. (G) Schematic diagram of the Caco-2/RAW 264.7 Transwell co-culture system. (H) Relative TEER of Caco-2 cell monolayers after different treatments. (I) Relative fluorescence intensity of FD4 across Caco-2 monolayers under different treatments. Data are presented as means ± SD. Statistical significance: ∗ P < 0.05, ∗∗ P < 0.01, ∗∗∗ P < 0.001.
Article Snippet: RAW 264.7 macrophages (Procell, Wuhan, China), Caco-2 intestinal epithelial cells (Pricella, Wuhan, China), and IEC-6 small intestinal epithelial cells (ATCC, USA) were maintained in high-glucose DMEM supplemented with 10 % fetal bovine serum (AiTing, Hangzhou, China) and 1 % penicillin-streptomycin (Gibco, USA), with the medium for IEC-6 cells additionally containing 0.1 U/mL human insulin.
Techniques: Disruption, In Vitro, Immunofluorescence, Staining, Fluorescence, Co-Culture Assay