Fig. 9. Proteomics comparison of diabetic wounds on day 7 between HUVECvegf165+-laden hydrogel and HUVECvector-laden hydrogel.
A Number of differentially expressed proteins. B PCA reveals evident separation based on differentially expressed proteins between the two groups. n = 5 rats/group. C Volcano plot shows the differentially expressed proteins of interests. D Upregulated pathways in the biological process enrichment analysis. Arrows: upregulated pathways of interests regarding extracellular matrix deposition and vessel regeneration. E Downregulated pathways in the biological process enrichment analysis. Arrows: downregulated pathways of interests regarding inflammatory response. F Protein-protein interaction and protein-biological process relation network analysis indicates that different biological processes during wound healing including inflammatory response, angiogenesis, and cell-matrix adhesion are interrelated based on some common differentially expressed proteins. G Heatmap shows the differentially expressed mitochondrial proteins of interests. Arrows: representative proteins related to mitochondrial oxidative stress damage. H Protein-protein interaction and protein-biological process relation network analysis reveals the key differentially expressed mitochondrial proteins involved in the oxidation-reduction process. The p values in the figure (C) and figures (D and E) are determined by two-sided unpaired t test and Fisher’s exact test, respectively.