PMID- 29065833 OWN - NLM STAT- MEDLINE DCOM- 20180807 LR - 20180807 IS - 1875-5704 (Electronic) IS - 1567-2018 (Linking) VI - 15 IP - 1 DP - 2018 TI - On the Importance of Polyurethane and Polyurea Nanosystems for Future Drug Delivery. PG - 37-43 LID - 10.2174/1567201814666171019102537 [doi] AB - BACKGROUND: During the last decade, polyurethanes and polyureas have emerged as promising alternatives to classical polyacrylate-, polyester- and polyaminoacid-based drug delivery nanosystems. They are not only biocompatible and biodegradable, but also facilitate the manufacture of polymeric nanostructured nanoparticles in quantitative yields. The versatile chemistry reduces the amount of organic solvents used and allows the straightforward multifunctionalization of polymer precursors with the desired targeting molecule at each stage of the process. OBJECTIVES: To highlight the common issues encountered in current drug delivery systems (DDSs) and the state of the art of polyurethane and polyurea polymers that self-assemble in a stratified manner by hydrophobic interactions. Finally, we discuss the importance of taking a holistic view when applying polymer nanotechnologies, in order to enhance their efficiency during preclinical and clinical studies. CONCLUSIONS: Polyurethane-polyurea nanoparticles (PUUa NPs) emerge as suitable platforms to be manufactured in a cost-effective manner at industrial scale and following environmentally friendly synthetic methods. Furthermore, they allow the controlled delivery of a wide range of drugs and can be rapidly adapted to many clinical requirements by means of FDA-approved precursors. Additionally, the ease with which PUUa nanoparticles are biodegraded ensures control over temporal aspects of drug delivery compared to other nanosystems. These advantages make PUUa NPs attractive drug delivery vehicles as long as adequate safety and ethical guidelines for new NP formulations are developed. CI - Copyright(c) Bentham Science Publishers; For any queries, please email at epub@benthamscience.org. FAU - Rocas, Pau AU - Rocas P AD - Nanobiotechnological Polymers Division, Ecopol Tech S.L., Industria 7, El Foix Business Park, 43720 L'Arboc. Spain. FAU - Cusco, Cristina AU - Cusco C AD - Nanobiotechnological Polymers Division, Ecopol Tech S.L., Industria 7, El Foix Business Park, 43720 L'Arboc. Spain. FAU - Rocas, Josep AU - Rocas J AD - Nanobiotechnological Polymers Division, Ecopol Tech S.L., Industria 7, El Foix Business Park, 43720 L'Arboc. Spain. FAU - Albericio, Fernando AU - Albericio F AD - School of Chemistry & Physics, University of Kwazulu-Natal, 4041 Durban. South Africa. LA - eng PT - Journal Article PT - Review PL - United Arab Emirates TA - Curr Drug Deliv JT - Current drug delivery JID - 101208455 RN - 0 (Polymers) RN - 0 (Polyurethanes) RN - 37955-36-5 (polyurea) SB - IM MH - *Drug Delivery Systems MH - Humans MH - Nanoparticles/*chemistry MH - *Nanotechnology MH - Polymers/*chemistry MH - Polyurethanes/*chemistry OTO - NOTNLM OT - Drug discovery OT - delivery systems OT - encapsulation OT - medicinal chemistry OT - polymers OT - targeting EDAT- 2017/10/27 06:00 MHDA- 2018/08/08 06:00 CRDT- 2017/10/26 06:00 PHST- 2017/09/07 00:00 [received] PHST- 2017/10/17 00:00 [revised] PHST- 2017/10/17 00:00 [accepted] PHST- 2017/10/27 06:00 [pubmed] PHST- 2018/08/08 06:00 [medline] PHST- 2017/10/26 06:00 [entrez] AID - CDD-EPUB-86430 [pii] AID - 10.2174/1567201814666171019102537 [doi] PST - ppublish SO - Curr Drug Deliv. 2018;15(1):37-43. doi: 10.2174/1567201814666171019102537.