Journal
EXPERT OPINION ON DRUG DELIVERY
Volume 4, Issue 1, Pages 5-17Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1517/17425247.4.1.5
Keywords
accumulation enhancement; drug delivery; nucleoside 5'-triphosphates; polymeric microgels; structural modification; triggered drug release; vectorisation
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Funding
- NCI NIH HHS [R01 CA102791-04, R01 CA102791] Funding Source: Medline
- NINDS NIH HHS [R01 NS050660] Funding Source: Medline
- NATIONAL CANCER INSTITUTE [R01CA102791] Funding Source: NIH RePORTER
- NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE [R01NS050660] Funding Source: NIH RePORTER
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Nanogels are colloidal microgel carriers that have been recently introduced as a prospective drug delivery system for nucleotide therapeutics. The crosslinked protonated polymer network of nanogels binds oppositely charged drug molecules, encapsulating them into submicron particles with a core-shell structure. The nanogel network also provides a suitable template for chemical engineering, surface modification and vectorisation. This review reveals recent attempts to develop novel drug formulations of nanogels with antiviral and antiproliferative nucleoside analogs in the active form of T-triphosphates, discusses structural approaches to the optimisation of nanogel properties, and discusses the development of targeted nanogel drug formulations for systemic administration. Notably, nanogels can improve the CNS penetration of nucleoside analogs that are otherwise restricted from passing across the blood-brain barrier. The latest findings reviewed here demonstrate an efficient intracellular release of nucleoside analogs, encouraging further applications of nanogel carriers for targeted drug delivery.
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