Abstract
Intelligent polymeric nanogels, with the rationally designed stimuli-responsive drug delivery and controlled drug release, have attracted considerable attention as an ideal nanoplatform for activatable therapy. On the other hand, functional inorganic nanomaterials are widely used as medical imaging agents due to their unique magnetic or optical properties. The construction of stimuli-responsive polymeric nanogels incorporating with functional inorganic nanomaterials inherits the excellent properties of both polymers and inorganic nanomaterials, consequently, the resulted organic-inorganic hybrid nanogels naturally exhibit stimuli-responsive multi-functionalities for both imaging and therapy. In this review, we summarize the recent advances of stimuli-responsive organic-inorganic hybrid nanogels. Firstly, we discuss the physical and chemical methods thus far developed for the integration of polymeric nanogels and inorganic nanomaterials, and then we show the typical examples of activatable theranostic applications using organic-inorganic hybrid nanogels. In the end, the existing challenges and future directions are briefly discussed.
Keywords: Stimuli-responsive, organic-inorganic nanogels, inorganic nanomaterials, theranostics, glycol chitosan (GC) monomer and Reactive Oxygen Species (ROS).
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