Journal: Bioactive Materials

Article Title: Muscle-fiber-inspired nanofibrillar microbundles induce myogenic differentiation in human adipose-derived stem cells

doi: 10.1016/j.bioactmat.2026.03.020

Figure Lengend Snippet: RNA-seq profiling of human adipose-derived stem cells (hASCs) after 21 days of culture in myogenic differentiation medium. (a) Principal component analysis (PCA) based on transcriptome expression values (FPKM), showing clustering of biological replicates for Monolayer (2D), PCL, and Fibril conditions. (b) Venn diagram showing the overlap of detected genes among Monolayer, PCL, and Fibril groups (numbers indicate gene counts in each intersection). (c) Gene Ontology (GO) Biological Process (BP) over-representation analysis (ORA) for differentially expressed genes in 2D vs nFMBs (left) and PCL-mFiBs vs nFMBs (right); bars are plotted as −log10 (adjusted p value), with terms enriched among genes upregulated in the first condition shown to the right (red) and terms enriched among genes downregulated in nFMBs shown to the left (blue). (d) KEGG pathway enrichment analysis for differentially expressed genes between PCL-mFiBs and nFMBs groups; dot size represents the number of genes mapped to each pathway (Count), dot color indicates adjusted p value, and the x-axis denotes Gene Ratio. (e) Category network plot (CNP; category–gene network plot) for the PCL-mFiBs vs nFMBs comparison, visualizing representative enriched GO BP terms and their associated genes; gene nodes are colored by fold change and term nodes reflect enrichment significance. (f–i) Heatmaps of selected genes associated with representative GO terms: GO:0000280 (nuclear division), GO:0030198 (extracellular matrix organization), GO:0003012 (muscle system process), and GO:0007519 (skeletal muscle tissue development), respectively; expression patterns are shown across 2D, PCL-mFiBs, and nFMBs, with gene symbols listed alongside each heatmap.

Article Snippet: For HSkMCs, myogenic differentiation was induced using Skeletal Muscle Differentiation Medium (ATCC, Manassas, USA).

Techniques: RNA Sequencing, Derivative Assay, Cell Characterization, Expressing, Comparison

Journal: Bioactive Materials

Article Title: Targeting VEGFR2 inhibition within a spatially-confined conduit promotes nerve self-resolution and alleviates mechanical allodynia

doi: 10.1016/j.bioactmat.2026.03.009

Figure Lengend Snippet: Efficacy of GelMA MAVP MPs in promoting nerve end interface self-resolution. ( A ) Schematic of the peripheral sciatic nerve ligation (p-SNL) model with four experimental groups (i.e., MAVP, VAN, vehicle, and control) ( B ) Immunofluorescence (IF) staining of p-VEGFR2 and YAP (indicating mechanotransduction signaling). ( C ) The positive area percentage of p-VEGFR2 (n = 6). ( D ) Percentage of YAP in nuclear/cytoplasm (n = 6). ( E ) IF staining of proliferation signal (Ki-67) and vessel signal (CD31) for p-SNL animal. ( F ) Quantification of Ki-67/CD31 co-localization area percentage (n = 6). ( G ) IF co-staining of Ki-67 and macrophage marker F4/80. ( H ) Quantification of Ki-67/F4/80 co-localization area percentage (n = 6). ( I ) IF staining of scar marker α-SMA. ( J ) Quantification of α-SMA-positive area percentage (n = 6). Mean values are shown and error bars represent ± s.d., as analyzed by one-way ANOVA followed by the Tukey-Kramer test in ( C , D , F , H and J ). Biological replicates were used for all experiments. ns, p > 0.05, ∗p < 0.05, ∗∗∗p < 0.001, ∗∗∗∗p < 0.0001.

Article Snippet: The following primary antibodies were used for the subsequent steps: anti-Yap (mouse, 1:200, Santa sc-376830); anti-p-VEGFR2 (rabbit, 1:100 Invitrogen, PA5-105765); α-SMA (rabbit, 1:200, Proteintech 14395-1-AP); Reca-1 (mouse, 1:200, Santa sc-52665); anti-CD31 (mouse, 1:200, Santa sc-13537); anti-Ki67 (rabbit, 1:150, Cell Signaling 9129S); anti-NF-200 (mouse, 1:200, Sigma, SAB4200747); anti-MBP (rabbit, 1:200, Abcam ab218011); anti-F4/80 (mouse, 1:200, Santa sc-377009); Iba-1 (rabbit, 1:150, Abcam ab178846); anti-CGRP (rabbit, 1:400, Abcam ab283568); anti-TRPA1 (mouse, 1:200, Santa sc-376495); anti-CD86 (rabbit, 1:200, Proteintech 30691-1-AP); CD206 (rabbit, 1:200, Proteintech 18704-1-AP).

Techniques: Ligation, Control, Immunofluorescence, Staining, Marker

Journal: Bioactive Materials

Article Title: Targeting VEGFR2 inhibition within a spatially-confined conduit promotes nerve self-resolution and alleviates mechanical allodynia

doi: 10.1016/j.bioactmat.2026.03.009

Figure Lengend Snippet: Expression of pain signal proteins in peripheral nerve locations. ( A ) Immunohistochemical (IHC) imaging of VEGFA and ( B ) quantification of VEGFA mean integrated density (n = 6). ( C ) IHC staining for NGF and ( D ) quantification of NGF mean integrated density (n = 6). ( E ) IF staining for macrophages (F4/80) and ( F ) quantification of macrophage number per 10 4 μm 2 (n = 6). ( G ) IF staining for scar tissue (α-SMA) and ( H ) quantification of α-SMA -positive area percentage (n = 6). ( I ) IF staining for myelin sheath (MBP) and axon (NF200) and ( J ) quantification of myelin sheath to axon area ratio (n = 6). ( K ) IF staining for pain-related mediators CGRP and TRPA1 and ( L ) quantification of CGRP (n = 6), and ( M ) TRPA1 (n = 6). Mean values are shown and error bars represent ± s.d., as analyzed by one-way ANOVA followed by the Tukey-Kramer test in ( B , D , F , H , J , L and M ). Biological replicates were used for all experiments. ns, p > 0.05, ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001, ∗∗∗∗p < 0.0001.

Article Snippet: The following primary antibodies were used for the subsequent steps: anti-Yap (mouse, 1:200, Santa sc-376830); anti-p-VEGFR2 (rabbit, 1:100 Invitrogen, PA5-105765); α-SMA (rabbit, 1:200, Proteintech 14395-1-AP); Reca-1 (mouse, 1:200, Santa sc-52665); anti-CD31 (mouse, 1:200, Santa sc-13537); anti-Ki67 (rabbit, 1:150, Cell Signaling 9129S); anti-NF-200 (mouse, 1:200, Sigma, SAB4200747); anti-MBP (rabbit, 1:200, Abcam ab218011); anti-F4/80 (mouse, 1:200, Santa sc-377009); Iba-1 (rabbit, 1:150, Abcam ab178846); anti-CGRP (rabbit, 1:400, Abcam ab283568); anti-TRPA1 (mouse, 1:200, Santa sc-376495); anti-CD86 (rabbit, 1:200, Proteintech 30691-1-AP); CD206 (rabbit, 1:200, Proteintech 18704-1-AP).

Techniques: Expressing, Immunohistochemical staining, Imaging, Immunohistochemistry, Staining