Journal: Bioactive Materials

Article Title: Three-dimensional printed PCL/nHA scaffolds promote soft tissue functional fibrosis to repair chest wall defect via Piezo1/Ca 2+ signal during respiratory motion

doi: 10.1016/j.bioactmat.2026.03.037

Figure Lengend Snippet: 10 wt% PCL/nHA enhances cell proliferation and reduces apoptosis via calcium ion regulation. (A) Morphological characteristics and viability of L929 cells cultured on PCL and PCL/nHA samples. (B) Statistical evaluation of L929 cells viability. (C) Morphological characteristics and viability of HSFs cultured on PCL and PCL/nHA samples. (D) Statistical evaluation of HSFs viability. (E) Time-dependent proliferation of L929 cells on PCL and PCL/nHA substrates over 1, 2, and 3 days. (F) Time-dependent proliferation of HSFs on PCL and PCL/nHA substrates over 1, 2, and 3 days. (G) Influence of varying nHA concentrations in PCL on L929 cells apoptosis. (H) Quantitative apoptosis assessment across experimental groups based on data from G. (I) Apoptosis of L929 cells cultured in media with varying calcium ion concentrations. (J) Statistical analysis of the apoptosis data presented in I. (K) The morphological characteristics and viability of L929 cells cultured in the CaCl 2 group, the nHA group (with calcium ion concentration equivalent to that in the CaCl 2 group), and the control group. All data are presented as the Mean ± SD (n ≥ 3). ∗p < 0.05, ∗∗p < 0.01, and ∗∗∗p < 0.001. ns, no significant difference.

Article Snippet: CCK-8 assay kit, Fluo-4AM, Cell Apoptosis Detection Kit, Mitochondrial membrane potential assay kit and ROS Assay Kit were purchased from Beyotime Biotechnology (China).

Techniques: Cell Culture, Concentration Assay, Control

Journal: Bioactive Materials

Article Title: Three-dimensional printed PCL/nHA scaffolds promote soft tissue functional fibrosis to repair chest wall defect via Piezo1/Ca 2+ signal during respiratory motion

doi: 10.1016/j.bioactmat.2026.03.037

Figure Lengend Snippet: Piezo1-mediated Ca 2+ signaling in PCL/nHA-Driven cell behaviors. (A) Fluorescence imaging of intracellular calcium ion influx in L929 cells on PCL and PCL/nHA surfaces. (B) Fluorescence quantification of calcium ion influx in A. (C) Fluorescence imaging of intracellular calcium ion influx in HSFs on PCL and PCL/nHA surfaces. (D) Fluorescence quantification of calcium ion influx in C. (E) Fluorescence imaging assessment of intracellular ROS levels in L929 cells on PCL and PCL/nHA samples. (F) Effects of PCL samples with different nHA contents on the mitochondrial membrane potential of L929 cells. (G) Assessment of the expression levels of mechanosensing- and proliferation-related proteins in L929 cells cultured on PCL and PCL/nHA surfaces. (H) Assessment of the expression levels of mechanosensing- and proliferation-related proteins in HSFs cultured on PCL and PCL/nHA surfaces. (I) Assessment of the expression levels of apoptosis-related proteins in L929 cells cultured on PCL and PCL/nHA surfaces. (J) Schematic illustration depicting the mechanisms underlying L929 cell proliferation differences. All data are presented as the Mean ± SD (n ≥ 3). ∗p < 0.05, ∗∗p < 0.01, and ∗∗∗p < 0.001. ns, no significant difference.

Article Snippet: CCK-8 assay kit, Fluo-4AM, Cell Apoptosis Detection Kit, Mitochondrial membrane potential assay kit and ROS Assay Kit were purchased from Beyotime Biotechnology (China).

Techniques: Fluorescence, Imaging, Membrane, Expressing, Cell Culture

Journal: International Journal of Pharmaceutics: X

Article Title: A pH-responsive dual-drug nanoplatform for stromal remodeling and enhanced chemotherapy via MMP3/TGF- β inhibition

doi: 10.1016/j.ijpx.2026.100489

Figure Lengend Snippet: In vitro therapeutic efficacy and synergy analysis of RPAE-QM in 4 T1 cells. (A) Cell viability of 4 T1 cells incubated with different formulations for 48 h determined by MTT assay. (B) The corresponding IC 50 values of the respective treatments. (C) Representative flow cytometry plots of Annexin V-FITC/PI staining for apoptosis analysis in 4 T1 cells. (D) Quantitative analysis of the total apoptotic rate. (E) Dose-response curves of free Que., free DM1, and their combination used for quantitative synergy determination. (F) The Combination Index (CI) plot as a function of Fraction affected (Fa) generated using the Chou-Talalay method; the reference line at CI = 1 indicates an additive effect, while CI < 1 indicates synergism. Data are presented as mean ± SD (n = 3). * P < 0.05, ** P < 0.01, *** P < 0.001 and **** P < 0.0001.

Article Snippet: After 24 h, the cells were harvested and stained with Annexin V-FITC/PI Cell Apoptosis Detection Kit (Beyotime, China) for flow cytometer analysis.

Techniques: In Vitro, Drug discovery, Incubation, MTT Assay, Flow Cytometry, Staining, Generated