Host-guest assemblies for improved photothermal cancer therapy

Abstract

Photothermal cancer therapy has attracted plenty of attention in the last decades due to its promising efficacy, spatiotemporal control, negligible drug resistance, etc. However, to achieve widespread clinical application, studies in the field of photothermal therapy still need to focus on the improvement of efficacy and the minimization of side effects. Host-guest assemblies, constructed by the inclusion of small molecular guests into macrocyclic hosts through non-covalent interactions, are featured with unique microenvironments and flexible, dynamic nature. Based on the abovementioned advantages, host-guest assemblies show great potential in photothermal therapy. However, presumably, the endeavors of host-guest assemblies-based photothermal therapy have not been systematically discussed. Hence, to benefit the design of advanced host-guest assembly-based photothermal agents and promote the development of photothermal therapy, in this review, the major achievements of host-guest assemblies in photothermal cancer therapy, including the enhancement of photothermal conversion efficiency, the improvement of targeted distribution at tumor sites, and the superiority of constructing photothermal therapy-derived multimodal synergistic therapy, are discussed. In addition, the future perspectives on host-guest assemblies-based photothermal therapy are outlined.

Keywords

Photothermal therapy / host-guest assembly / stimuli-responsive / photothermal conversion efficiency / synergistic therapy

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