Micelles for delivery of nitric oxide

Yun Suk Jo, Andréj Van Der Vlies, Jay Gantz, Tyler N. Thacher, Sasa Antonijevic, Simone Cavadini, Davide Demurtas, Nikolaos Stergiopulos, Jeffrey A. Hubbell

Research output: Contribution to journalArticle

73 Scopus citations

Abstract

We designed block copolymer pro-amphiphiles and amphiphiles for providing very long-term release of nitric oxide (NO). A block copolymer of N-acryloylmorpholine (AM, as a hydrophile) and N-acryloyl-2,5-dimethylpiperazine (AZd, as a hydrophilic precursor) was synthesized. The poly(N-acryloyl-2,5- dimethylpiperazine) (PAZd) is water-soluble, but chemical reaction of the secondary amines with NO to form a N-diazeniumdiolate (NONOate) converts the hydrophilic PAZd into a hydrophobic poly(sodium-1-(N-acryloyl-2,5- dimethylpiperazin-1-yl)diazen-1-ium-1,2-diolate) (PAZd·NONOate), driving aggregation. The PAM block guides this process toward micellization, rather than precipitation, yielding ca. 50 nm spherical micelles. The hydrophobic core of the micelle shielded the NONOate from the presence of water, and thus protons, which are required for NO liberation, delaying release to a remarkable 7 d half-life. Release of the NO returned the original soluble polymer. The very small NO-loaded micelles were able to penetrate complex tissue structures, such as the arterial media, opening up a number of tissue targets to NO-based therapy.

Original languageEnglish (US)
Pages (from-to)14413-14418
Number of pages6
JournalJournal of the American Chemical Society
Volume131
Issue number40
DOIs
StatePublished - Oct 14 2009

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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    Jo, Y. S., Van Der Vlies, A., Gantz, J., Thacher, T. N., Antonijevic, S., Cavadini, S., Demurtas, D., Stergiopulos, N., & Hubbell, J. A. (2009). Micelles for delivery of nitric oxide. Journal of the American Chemical Society, 131(40), 14413-14418. https://doi.org/10.1021/ja905123t