Journal: Materials Today Bio
Article Title: NIR light-propelled Janus Polydopamine@Mesoporous silica gene delivery nanomotor for the enhanced gene treatment of critical limb ischemia
doi: 10.1016/j.mtbio.2025.101950
Figure Lengend Snippet: (a) The cytotoxicity of different concentrations of PDA@MS-NH 2 @HIF-1α nanomotors against normal HAECs under hypoxic conditions (NIR: 808 nm, 1.5 W/cm 2 ; n = 3, ∗ P < 0.05, ∗∗∗ P < 0.001). (b) Representative CLSM images and (c) flow cytometry analysis of intracellular ROS detection following treatment with various specimens for 12 h (Blank-NP: PDA@MS-NH 2 ; NP/pDNA: PDA@MS-NH 2 @HIF-1α; Green: ROS; Scale bar: 200 μm). (d) H 2 O 2 concentration of HAECs co-cultured with different samples ( n = 3, ∗∗∗ P < 0.001). (e) Confocal microscopic observation of gene transfection efficiency of PDA@MS-NH 2 @HIF-1α nanomotors in HAECs under hypoxic conditions. The eGFP was implemented as a control to ascertain the transfection efficiency, and the intensity of color directly corresponded to the level of fluorescence (Scale bars: 20 μm; Green: eGFP; Blue: DAPI). (f) The HIF-1α and (g) VEGF protein expression in culture supernatants of HAECs treated with different specimens ( n = 3, ∗∗∗ P < 0.001).
Article Snippet: In order to assess the ability of PDA@MS-NH 2 nanomotors to eliminate intracellular ROS, the production of intracellular ROS induced by lipopolysaccharide (LPS) in Human amniotic epithelial cells (HAECs) was quantified using the ROS-sensitive fluorescent dye 2′,7′-dichlorodihydrofluorescein diacetate (DCFH-DA; Beyotime Biotechnology, China).
Techniques: Flow Cytometry, Concentration Assay, Cell Culture, Transfection, Control, Fluorescence, Expressing