Cited by 70Advanced Drug Delivery SystemsNanoparticle-Based Drug DeliveryHydrogels: synthesis, properties, applications

Biodegradable poly(lactic-co-glycolic acid) microspheres loaded with S-nitroso-N-acetyl-D-penicillamine for controlled nitric oxide delivery

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Lautner, Gergely, Meyerhoff, Mark E., Schwendeman, Steven P.·2016·Journal of Controlled Release

Abstract

Nitric oxide (NO) is a fascinating and important endogenous free-radical gas with potent antimicrobial, vasodilating, smooth muscle relaxant, and growth factor stimulating effects. However, its wider biomedical applicability is hindered by its cumbersome administration, since NO is unstable especially in biological environments. In this work, to ultimately develop site-specific controlled release vehicles for NO, the NO donor S-nitroso-N-acetyl-D-penicillamine (SNAP) was encapsulated within poly(lactic-co-glycolic acid) 50:50 (PLGA) microspheres by using a solid-in-oil-in-water emulsion solvent evaporation method. The highest payload was 0.56(±0.01) μmol SNAP/mg microspheres. The in vitro release kinetics of the donor were controlled by the bioerosion of the PLGA microspheres. By using an uncapped PLGA (Mw=24,000-38,000) SNAP was slowly released for over 10days, whereas by using the ester capped PLGA (Mw=38,000-54,000) the release lasted for over 4weeks. The presence of copper ions and/or ascorbate in solution was necessary to efficiently decompose the released NO donor and obtain sustained NO release. It was also demonstrated that light can be used to induce rapid NO release from the microspheres over several hours. SNAP exhibited excellent storage stability when encapsulated in the PLGA microspheres. These new microsphere formulations may be useful for site-specific administration and treatment of pathologies associated with dysfunction in endogenous NO production, e.g. treatment of diabetic wounds, or in diseases involving other biological functions of NO including vasodilation, antimicrobial, anticancer, and neurotransmission.

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Authors
Lautner, G., Meyerhoff, M. E., & Schwendeman, S. P.
Affiliations
University of Michigan (US)
Corresponding author
  • Meyerhoff, Mark E.
  • Schwendeman, Steven P.
Venue
Journal of Controlled Release
Publisher
Elsevier BV
Published
2016-03
Volume
225
Pages
133-139
ISSN
0168-3659 (ISSN-L)
OpenAlex
W2228111974
Cited by
70
References
42
Citations by year
2026: 4 · 2025: 6 · 2024: 9 · 2023: 5 · 2022: 9 · 2021: 9 · 2020: 6 · 2019: 7 · 2018: 10 · 2017: 3 · 2016: 2
FWCI
4.18
Type
journal article
Language
en
Open access
Locations
  • Journal of Controlled Release (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • NIH (EB000783)
  • The University of Michigan MCubed program
Topics
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmaceutical Science › Advanced Drug Delivery Systems
  • Physical Sciences › Materials Science › Biomaterials › Nanoparticle-Based Drug Delivery
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Hydrogels: synthesis, properties, applications
Keywords
nitric oxide delivery, PLGA microspheres, controlled release, biodegradable drug delivery, emulsion solvent evaporation, PLGA molecular weight, vitamin C, light-triggered release, storage stability, diabetic wound healing, vasodilation
MeSH terms
Polylactic Acid-Polyglycolic Acid Copolymer, Delayed-Action Preparations, Microspheres, Nitric Oxide, Polyglycolic Acid, Drug Delivery Systems, Lactic Acid, Nitric Oxide Donors, S-Nitroso-N-Acetylpenicillamine

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