Optimized cDICE for Efficient Reconstitution of Biological Systems in Giant Unilamellar Vesicles
Optimized cDICE for Efficient Reconstitution of Biological Systems in Giant Unilamellar Vesicles
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优化的 cDICE 可有效重建巨型单层囊泡中的生物系统
DOI:
10.1101/2021.02.24.432456
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发表时间:
2021
影响因子:
4.7
通讯作者:
Kristina A. Ganzinger
中科院分区:
文献类型:
--
作者:
Lori van de Cauter;F. Fanalista;Lennard van Buren;Nicola de Franceschi;Elisa Godino;Sharon Bouw;C. Danelon;C. Dekker;G. Koenderink;Kristina A. Ganzinger
Giant unilamellar vesicles (GUVs) are often used to mimic biological membranes in reconstitution experiments. They are also widely used in research on synthetic cells as they provide a mechanically responsive reaction compartment that allows for controlled exchange of reactants with the environment. However, while many methods exist to encapsulate functional biomolecules in GUVs, there is no one-size-fits-all solution and reliable GUV fabrication still remains a major experimental hurdle in the field. Here, we show that defect-free GUVs containing complex biochemical systems can be generated by optimizing a double-emulsion method for GUV formation called continuous droplet interface crossing encapsulation (cDICE). By tightly controlling environmental conditions and tuning the lipid-in-oil dispersion, we show that it is possible to significantly improve the reproducibility of high-quality GUV formation as well as the encapsulation efficiency. We demonstrate efficient encapsulation for a range of minimal systems including a minimal actin cytoskeleton, membrane-anchored DNA nanostructures, and a functional PURE (Protein synthesis Using Recombinant Elements) system. Our optimized cDICE method displays promising potential to become a standard method in biophysics and bottom-up synthetic biology.
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