Journal: bioRxiv
Article Title: In vitro -generated inflammatory fibroblasts secrete extracellular matrix with biochemical and biophysical properties similar to tissue-remodelling fibroblasts
doi: 10.1101/2024.09.26.614950
Figure Lengend Snippet: A) Schematic representation of the stimuli used to induce fibroblast differentiation in vitro in 3D. NIH3T3 fibroblasts were mixed with a drop of rat tail fibrillar collagen I (1.7mg/mL polymerized at 37°C) and cultured for 4 days in the presence of medium alone or medium supplemented with the indicated stimuli. B-C) Log2 gene expression of myCAF markers Acta2 and Tagln (B) and Ccl2, Il6 and Lif (C) of in vitro -induced subtypes normalized to uninduced. Housekeeping genes are Ppia and B2m . Data were analysed by one-way ANOVA followed by Tukey’s multiple comparisons test of three independent experiments. *p<0.05; **p<0.01. D) t-SNE plots of 3,392 stromal fibroblasts of interest from CRC dataset (top) and PDAC dataset (bottom), color-coded by sub-cell type and sample origin, and 6,781 stromal fibroblasts of interest. E) Dot-plots representing average gene expression, and percentage of cells expressing Acta2, Tagln, Il6, Ccl2 and Lif . From the CRC datasets (top), a comparison is made between subtypes Myofibroblasts, Stromal 1, Stromal 2, and Stromal 3 of tumor origin. From the PDAC dataset (bottom), myCAFs and iCAFs are compared.
Article Snippet: Embryonic mouse fibroblast cell line NIH3T3 was obtained from ATCC (CRL-1658) and cultured in high-glucose DMEM with 4.5 g/L glucose (Gibco, #10938025) supplemented with 10% fetal calf serum (FCS) (Cytiva, SH30541.03), penicillin-streptomycin (Sigma-Aldrich, #P4333), 200 mM L-glutamine (Gibco, #25030-024) and 1% sodium pyruvate (Gibco, #25030-024), namely complete medium.
Techniques: In Vitro, Cell Culture, Gene Expression, Expressing, Comparison