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Enzyme-Responsive Aqueous Two-Phase Systems in a Cationic-Anionic Surfactant Mixture.

Xiao XiaoYan QiaoZhirui XuTongyue WuYunxue WuZhe LingYun YanJianbin Huang
Published in: Langmuir : the ACS journal of surfaces and colloids (2021)
Enzyme-instructed self-assembly is an increasingly attractive topic owing to its broad applications in biomaterials and biomedicine. In this work, we report an approach to construct enzyme-responsive aqueous surfactant two-phase (ASTP) systems serving as enzyme substrates by using a cationic surfactant (myristoylcholine chloride) and a series of anionic surfactants. Driven by the hydrophobic interaction and electrostatic attraction, self-assemblies of cationic-anionic surfactant mixtures result in biphasic systems containing condensed lamellar structures and coexisting dilute solutions, which turn into homogeneous aqueous phases in the presence of hydrolase (cholinesterase). The enzyme-sensitive ASTP systems reported in this work highlight potential applications in the active control of biomolecular enrichment/release and visual detection of cholinesterase.
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