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- W4213253614 abstract "Platelet adhesion and activation are mediated by integrin α IIb β 3 clustering, which is crucial for the hemostatic function of platelets. In an activated state, integrins provide the connection between the extracellular matrix and the actin cytoskeleton through a variety of cytoplasmic proteins, such as talin. Here, droplet‐based microfluidics is applied to generate cell‐sized giant unilamellar vesicles (GUVs) with a defined molecular composition to quantify the adhesion of integrin α IIb β 3 ‐containing protocells in relation to the number of integrin–talin head domain (THD) complexes. Furthermore, it is shown that THD induces integrin clustering in protocells adhering to fibrinogen. The formation of this molecular link, which has, so far, only been observed in vivo, is an essential step in synthetic cell design to recapitulate integrin‐mediated bidirectional signaling across the membrane. These results pave the way for further quantitative investigations of protein–protein interactions between integrins and associated proteins and their assembly within such defined, but complex, synthetic cells. An essential future step to mimic the complex interaction between cells and their environment will be to combine synthetic approaches with peptide chemistry to guide the molecular mechanisms involved in integrin binding and activation." @default.
- W4213253614 created "2022-02-24" @default.
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- W4213253614 date "2022-02-20" @default.
- W4213253614 modified "2023-10-15" @default.
- W4213253614 title "Integrin α<sub>IIb</sub>β<sub>3</sub> Activation and Clustering in Minimal Synthetic Cells" @default.
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- W4213253614 doi "https://doi.org/10.1002/anbr.202100094" @default.
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