Journal
ACS NANO
Volume 12, Issue 11, Pages 10636-10664Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.8b06104
Keywords
solid tumor micromilieu; nanoarchitecture engineering; cancer cell targeting; stimuli- and trigger-responsive mechanisms; smart nanodrug-delivery systems; liposomes; polymeric nanoparticles; smart theranostics
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The microenvironment characteristics of solid tumors, renowned as barriers that harshly impeded many drug-delivery approaches, were precisely studied, investigated, categorized, divided, and subdivided into a complex diverse of barriers. These categories were further studied with a particular perspective, which makes all barriers found in solid-tumor micromilieu turn into different types of stimuli, and were considered triggers that can increase and hasten drug-release targeting efficacy. This review gathers data concerning the nature of solid-tumor micromilieu. Past research focused on the treatment of such tumors, the recent efforts employed for engineering smart nanoarchitectures with the utilization of the specified stimuli categories, the possibility of combining more than one stimuli for much-greater targeting enhancement, examples of the approved nanoarchitectures that already translated clinically as well as the obstacles faced by the use of these nanostructures, and, finally, an overview of the possible future implementations of smart-chemical engineering for the design of more-efficient drug delivery and theranostic systems and for making nanosystems with a much-higher level of specificity and penetrability features.
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