Abstract
Nanocellulose and nanogels have shown interesting suitable properties that play an important role among drug delivery vectors. This chapter describes the most important developments and outlook regarding nanocellulose and nanogels as drug delivery systems (DDS), keeping in mind the challenges to be overcome in achieving new registered and appreciated formulations. Nanogels as DDS have unique properties because they combine the characteristics of hydrogels, such as hydrophilicity, flexibility, versatility, high water absorptivity, biocompatibility, and an interior network for the incorporation of therapeutics, with the characteristics of nanoparticles (NPs). Nanogels present some important advantageous properties that support the claim to be considered the most promising category of NPs for the design and achievement of efficient DDS. The chapter also presents the main results of drug delivery using NPs of water-soluble non-gel polymers. It presents some nanogel applications in crossing biological barriers, delivery of vaccines, anti-inflammatory agents, and immunosuppressants in the treatment of autoimmune diseases.
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