Abstract
Supramolecular vesicles (SMVs) self-assembled from the supra-amphiphiles, consisting of two scaffolds linked together through noncovalent interactions, can realize stimuli-responsive controlled release of encapsulated drugs for enhanced therapeutic efficacy and minimized side effect of drugs. Pillararenes (PAs), an emerging kind of macrocyclic hosts in 2008, are easy to modify with a variety of functionalities. SMVs from PAs and specific guests mainly based on the host-guest interactions have attracted increasing attention because of their drug delivery and controlled drug release. A great progress in the construction and stimuli-responsive drug delivery of the PA-based SMVs has been made since the first work was reported in 2012. This review summarizes the major achievements of the PA-based SMVs for stimuli-responsive drug delivery over the past 5 years, including the microstructures of SMVs, multiple stimuli-responsive SMVs, prodrug SMVs from prodrug PAs and guests, bola-type SMVs, multifunctional SMVs, glucose-responsive SMVs for insulin delivery, novel SMVs from responsive PAs, thermo-responsive SMVs, and ternary SMVs, for chemotherapy, photothermal therapy, photodynamic therapy, and other biological applications. The future challenges and research directions of PA-based SMVs are also outlined from the points of views of the fundamental research, biological applications, and clinical applications of PA-based SMVs.
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