Journal: Nature cell biology
Article Title: Curved adhesions mediate cell attachment to soft matrix fibres in three dimensions.
doi: 10.1038/s41556-023-01238-1
Figure Lengend Snippet: Fig. 4 | Curved adhesions require a curvature-sensing protein, FCHo2. a, RFP–FCHo2 positively correlates with ITGβ5–GFP in curved adhesions (arrows) at vitronectin-coated nanopillars. In the same image, FCHo2 is absent in focal adhesions (arrowheads) and clathrin-containing adhesions (thin arrows). Scale bar, 10 µm (full size) or 5 µm (insets). b, Scatter plot of RFP–FCHo2 intensity against the ITGβ5/membrane ratio at n = 353 nanopillars from the cell shown in a. See g for the correlation between ITGβ5 and FCHo2 at nanopillars, analysed in multiple cells. c, Kymographs of ITGβ5–GFP and RFP–FCHo2 at vitronectin- coated nanopillars imaged at 15 s per frame for 20 min. Scale bar, 1 µm. d, The temporal standard deviations of RFP–FCHo2 for 20 min at n = 104 high β5 and 313 low β5 nanopillars, from 2 independent cells. For each cell, nanopillars were divided into two groups based on ITGβ5 intensities: high-β5 nanopillars (top 25%) and low-β5 nanopillars (bottom 75%). Standard deviation values are normalized to the initial intensities. Medians (lines) and quartiles (dotted lines) are shown. e, FCHo2 knockdown significantly reduces nanopillar-induced ITGβ5 accumulation. BFP expression is a marker of shRNA transfection. Scale bar, 10 µm (full size) or 5 µm (insets). f, ITGβ5 does not colocalize with FCHo1 at nanopillars. Scale bar, 10 µm (full size) or 5 µm (insets). g, Quantification showing that FCHo2 knockdown significantly reduces nanopillar-induced ITGβ5 accumulation,
Article Snippet: The expression vectors of RFP–FCHo1, RFP–FCHo2 and EPS15– RFP were gifts from C. Merrifield (Addgene, 27690, 27686 and 27696, respectively).
Techniques: Membrane, Standard Deviation, Knockdown, Expressing, Marker, shRNA, Transfection