Journal: Bioactive Materials

Article Title: Injectable microgels carrying engineered biomimetic nanoparticles for osteoarthritis therapy via dual-targeted senescent chondrocyte clearance and endogenous repair promotion

doi: 10.1016/j.bioactmat.2025.11.038

Figure Lengend Snippet: Preparation and characterization of ANCM@SHM. (a) Schematic diagram of NCM preparation. (b) Representative TEM images of native CM and NCM. Bar: 50 nm. (c–d) Zeta potential (n = 3), particle size (n = 3), and PDI (n = 3) of native CM and NCM measured by DLS. (e) Representative TEM images of Lipo, A-lipo, and ANCM. Bar: 50 nm. (f–g) Zeta potential (n = 3), particle size (n = 3), and PDI (n = 3) of Lipo, A-lipo, and ANCM measured by DLS. (h) Representative confocal fluorescence micrographs showing red fluorescently labeled A-lipo and green fluorescently labeled NCM fusing into gold fluorescent ANCM. Bar: 10 μm. (i) Quantification of NKG2D on the surface of CM, NCM, and ANCM nanoparticles by flow cytometry. (j–k) Encapsulation efficiency (EE) (n = 3) and loading efficiency (LE) (n = 3) of ABT263. (l) Representative SEM image of ANCM@SHM. Bar: 100 μm. (m) Representative fluorescence image of PKH67-ANCM@SHM captured by confocal microscope. Bar: 100 μm.

Article Snippet: Subsequently, cells were incubated in the dark at room temperature for 20 min. Mitochondrial membrane potential was assessed employing the JC-1 fluorescent probe (Beyotime, China) following manufacturer's protocols.

Techniques: Zeta Potential Analyzer, Fluorescence, Labeling, Flow Cytometry, Encapsulation, Microscopy

Journal: Materials Today Bio

Article Title: Umbilical cord mesenchymal stem cells and their extracellular vesicles attenuate cryopreservation-induced ovarian injury via the suppression of ferroptosis in an in vitro culture system

doi: 10.1016/j.mtbio.2026.102965

Figure Lengend Snippet: Erastin treatment mimicked the ferroptosis phenotypes observed in cryopreserved ovarian tissue. (A) Immunohistochemical staining of GPX4 and ACSL4 in fresh ovarian tissue (Ctrl), cryopreserved tissue (Cryo), and fresh tissue treated with the ferroptosis inducer erastin (Ers). Scale bar, 50 μm. (B) Quantification of the mean optical density for GPX4 and ACSL4 staining in each group ( n = 8). (C) Measurement of Fe 2+ concentrations by colorimetric assay in the Ctrl, Cryo, and Ers groups ( n = 6). (D) Quantification of GSH levels in ovarian tissues via a colorimetric assay ( n = 5). (E) Representative confocal images of oxidized (green) and reduced (red) C11-BODIPY staining in ovarian tissues. Scale bar, 50 μm. (F) Quantification of lipid peroxidation expressed as the oxidized/reduced C11-BODIPY fluorescence ratio ( n = 5). Data are presented as mean ± SD. One-way ANOVA followed by LSD post hoc test. ∗ P < 0.05, ∗∗ P < 0.01, ∗∗∗ P < 0.001. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)

Article Snippet: Lipid peroxidation in ovarian tissues was assessed using the lipid peroxidation sensitive fluorescent probe C11-BODIPY (581/591) (MedChemExpress, USA), which shifts from red to green fluorescence upon oxidation.

Techniques: Immunohistochemical staining, Staining, Colorimetric Assay, Fluorescence

Journal: Materials Today Bio

Article Title: Umbilical cord mesenchymal stem cells and their extracellular vesicles attenuate cryopreservation-induced ovarian injury via the suppression of ferroptosis in an in vitro culture system

doi: 10.1016/j.mtbio.2026.102965

Figure Lengend Snippet: UC-MSCs alleviated cryopreservation-induced ovarian injury by inhibiting ferroptosis. (A) Immunohistochemical staining of GPX4 and ACSL4 in the four experimental groups. Scale bar, 50 μm. (B) Quantification of the mean optical density for GPX4 and ACSL4 staining ( n = 8). (C) Measurement of the Fe 2+ concentration in ovarian tissues via a colorimetric assay ( n = 6). (D) Quantification of GSH levels via colorimetric assay ( n = 5). (E) CD31 immunohistochemical staining was used to assess microvessel density in ovarian tissue. Scale bar, 50 μm. (F) Quantitative analysis of CD31-positive microvessel density ( n = 5). (G) RT-qPCR analysis of the expression of angiogenesis-related genes, including VEGF, ANG2, and IGF1 ( n = 5). (H) Representative confocal images of oxidized (green) and reduced (red) C11-BODIPY. Scale bar, 50 μm. (I) Quantification of the oxidized/reduced C11-BODIPY fluorescence ratio ( n = 3). Data are presented as mean ± SD. Student's t -test or one-way ANOVA with LSD post hoc tests was used. ∗ P < 0.05, ∗∗ P < 0.01, ∗∗∗ P < 0.001. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)

Article Snippet: Lipid peroxidation in ovarian tissues was assessed using the lipid peroxidation sensitive fluorescent probe C11-BODIPY (581/591) (MedChemExpress, USA), which shifts from red to green fluorescence upon oxidation.

Techniques: Immunohistochemical staining, Staining, Concentration Assay, Colorimetric Assay, Quantitative RT-PCR, Expressing, Fluorescence

Journal: Materials Today Bio

Article Title: Umbilical cord mesenchymal stem cells and their extracellular vesicles attenuate cryopreservation-induced ovarian injury via the suppression of ferroptosis in an in vitro culture system

doi: 10.1016/j.mtbio.2026.102965

Figure Lengend Snippet: MSC-EVs repaired cryopreservation-induced ovarian injury by inhibiting ferroptosis. (A) Immunohistochemical staining of GPX4 and ACSL4 in the four experimental groups. Scale bar, 50 μm. (B) Quantification of the mean optical density for GPX4 and ACSL4 staining ( n = 5). (C) Quantification of Fe 2+ concentrations in ovarian tissue via a colorimetric assay ( n = 5). (D) Quantification of GSH levels via colorimetric assay ( n = 5). (E) Representative confocal images of oxidized (green) and reduced (red) C11-BODIPY. Scale bar, 50 μm. (F) Quantification of the oxidized/reduced C11-BODIPY fluorescence ratio ( n = 3). Data are presented as mean ± SD. One-way ANOVA followed by LSD post hoc test. ∗ P < 0.05, ∗∗ P < 0.01, ∗∗∗ P < 0.001. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)

Article Snippet: Lipid peroxidation in ovarian tissues was assessed using the lipid peroxidation sensitive fluorescent probe C11-BODIPY (581/591) (MedChemExpress, USA), which shifts from red to green fluorescence upon oxidation.

Techniques: Immunohistochemical staining, Staining, Colorimetric Assay, Fluorescence