Journal: Journal of Nanobiotechnology
Article Title: Aminolysis-mediated single-step surface functionalization of poly (butyl cyanoacrylate) microbubbles for ultrasound molecular imaging
doi: 10.1186/s12951-024-02806-9
Figure Lengend Snippet: In vitro binding of cRGD-MB to HUVEC under flow conditions. A Fluorescence images of non-stimulated (control) or TNF-α stimulated HUVEC. The nuclei, cell membrane and α v β 3 integrins were stained with DAPI (blue), wheat germ agglutinin-488 (WGA, green) and CD51/61 antibody (red), respectively. Scale bar = 50 μm. B Quantitative analysis indicating significantly higher area fraction of α v β 3 integrin in HUVEC stimulated with TNF-α. Data are represented as mean ± SD. C Schematic showing the in vitro setup of the flow chamber. Petri dishes with cultured HUVEC were connected to a flow chamber, in turn perfused with an MB solution (standard-MB, cRAD-MB, or cRGD-MB) at 0.25 mL/min. D Representative fluorescent images of the three different, rhodamine-labeled MB types binding to TNF-α stimulated HUVEC. The nuclei, cell membrane and MB were labeled with DAPI (blue), WGA (green) and rhodamine (red), respectively. Scale bar: 100 μm. E Number of bound MB per cell. cRGD-MB displayed significantly higher binding to TNF-α stimulated HUVEC compared to both controls. Data represent mean ± SD of three independent MB batches. Statistical comparisons were performed using unpaired t-tests in panel B, while for panel E comparisons were performed using one-way ANOVA. **p < 0.01 and ***p < 0.001
Article Snippet: The tumor sections were fixed with 80% methanol for 5 min at 4 °C followed by the addition of acetone at − 20 °C for 2 min. After fixation, sections were washed 3 times with PBS and incubated overnight with a rabbit anti-α v β 3 integrin antibody (1 μg/ μL; eBioscience, San Diego, California, USA) at a dilution of 1:100 at 4 °C.
Techniques: In Vitro, Binding Assay, Fluorescence, Control, Membrane, Staining, Cell Culture, Labeling