Journal: Bioactive Materials

Article Title: Composite hydrogel-microsphere delivery system promotes early nerve-mediated bone regeneration and late-stage mechanotransduction-driven bone remodeling via sequential release of NGF and Yoda1

doi: 10.1016/j.bioactmat.2025.10.040

Figure Lengend Snippet: Effect of NGF-G/P@Yoda1 on promoting bone regeneration and bone remodeling in femur def ect model. (A–D) Representative immunohistochemical staining images at week 8 for RUNX2 and OPN and semi-quantitative analysis of positive areas to evaluate the osteogenic capacity of composite hydrogels. (E, F) Representative immunofluorescence (IF) staining images at week 8 of OCN and semi-quantitative analysis. (G–J) Representative IF staining images at week 8 of YAP1and β-catenin and semi-quantitative analyses. (K, L) Representative TRAP staining images at week 8 and semi-quantitative analysis of positive areas to assess bone resorption and remodeling. The quantitative data (n ≥ 3) in the figures represent as the averages ± SD, ∗P < 0.05, ∗∗P < 0.01, ∗∗∗P < 0.001.

Article Snippet: Following dewaxing and rehydration of femur sections, they were treated with TRAP staining solution (G105, Servicebio, Wuhan, China) at 37 °C for 30 min in the absence of light.

Techniques: Immunohistochemical staining, Staining, Immunofluorescence

Journal: Materials Today Bio

Article Title: Self-powered intracellular nanogenerator attenuates inflammatory osteolysis through mitochondrial MRS2/Mg 2+ -mediated macrophage repolarization and osteoclastogenesis inhibition

doi: 10.1016/j.mtbio.2025.102050

Figure Lengend Snippet: pBTO inhibited osteoclastogenesis in vitro. (A) TRAP staining in RANKL-treated RAW264.7 cells stimulated with BTO and pBTO. (B) Relative mRNA levels of genes associated with osteoclastogenesis of RAW264.7 cells in the presence of RANKL, BTO or pBTO. (C) JC-1 staining in RANKL-treated RAW264.7 cells stimulated with BTO and pBTO. (D) Schematic diagram of pBTO inhibit osteoclastogenesis of macrophage (∗: p < 0.05, ∗∗: p < 0.01, ∗∗∗∗: p < 0.001).

Article Snippet: The cells were fixed with 4 % paraformaldehyde for 15 min, permeabilized with 0.1 % Triton X-100 for 20 min, and incubated with TRAP staining solution in the dark at 37 °C for 1 h. Then, the cells were stained with DAPI (Beyotime, China) in the dark at 37 °C for 15 min.

Techniques: In Vitro, Staining

Journal: Materials Today Bio

Article Title: Self-powered intracellular nanogenerator attenuates inflammatory osteolysis through mitochondrial MRS2/Mg 2+ -mediated macrophage repolarization and osteoclastogenesis inhibition

doi: 10.1016/j.mtbio.2025.102050

Figure Lengend Snippet: pBTO improved inflammatory bone loss by modulating macrophage polarization and osteoclastogenesis in vivo. (A) Designed an mice inflammatory bone loss model. (B) Micro-CT scanning and 3D reconstruction of mice calvarial bone. pBTO inhibited LPS-induced inflammatory bone loss. (C) CD68 + Arg-1 + macrophages (arrow) in calvarial bone matrix under confocal microscope. PBTO increased the number of M2 macrophages. (D) CD68 + iNOS + macrophages (arrow) in calvarial bone matrix under confocal microscope. pBTO decreased the number of LPS-induced M1 macrophages. (E) HE staining of mice calvarial bone showed pBTO decreased LPS-induced inflammatory cell infiltration and bone resorption. (F) TRAP staining of mice calvarial bone showed pBTO decreased the number of osteoclasts.

Article Snippet: The cells were fixed with 4 % paraformaldehyde for 15 min, permeabilized with 0.1 % Triton X-100 for 20 min, and incubated with TRAP staining solution in the dark at 37 °C for 1 h. Then, the cells were stained with DAPI (Beyotime, China) in the dark at 37 °C for 15 min.

Techniques: In Vivo, Micro-CT, Microscopy, Staining