Skip to main content
. 2023 Sep 28;25(10):1453–1464. doi: 10.1038/s41556-023-01238-1

Extended Data Fig. 2. Positive membrane curvature induces the preferential accumulation of integrin β5 but not other integrin β isoforms.

Extended Data Fig. 2

a and b, Fluorescence images of endogenous integrin β1 (a) and transiently expressed GFP-tagged integrin β3, β6, and β8 (b) in U2OS cells expressing a plasma membrane marker RFP-CaaX on 200-nm nanobar arrays coated with different ECM proteins (fibronectin, vitronectin or laminin). All of them show no preference for the nanobar ends. Quantifications of their curvature preferences are presented in Fig. 1i. Scale: full-size, 10 µm; insets, 5 µm. c, Fluorescence images showing that anti-ɑvβ5 in U2OS cells localizes to focal adhesions on vitronectin-coated flat surfaces (left), and preferentially accumulates at the ends of vitronectin-coated nanobars in U2OS cells expressing RFP-CaaX (right). Scale: full-size, 10 µm; insets, 5 µm. d, Fluorescence images showing that anti-ITGβ5 preferentially accumulates at the ends of vitronectin-coated nanobars in HT1080, A549, U-251 MG, MCF7, HeLa, and human mesenchymal stem cells. Scale: full-size, 10 µm; insets, 5 µm. e, Fluorescence images showing that ITGβ5-GFP preferentially accumulates at the ends of vitronectin-coated nanobars in mouse embryonic fibroblasts. Scale: full-size, 10 µm; insets, 5 µm.