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Title: Targeted nitric oxide delivery by supramolecular nanofibers for the prevention of restenosis after arterial injury

Journal Article · · Antioxidants and Redox Signaling
 [1];  [1];  [2];  [1];  [1];  [1];  [1];  [1];  [2];  [1]
  1. Northwestern Univ., Chicago, IL (United States)
  2. Northwestern Univ., Chicago, IL (United States); Northwestern Univ., Evanston, IL (United States)

Cardiovascular interventions continue to fail as a result of arterial restenosis secondary to neointimal hyperplasia. Here we sought to develop and evaluate a systemically delivered nanostructure targeted to the site of arterial injury to prevent neointimal hyperplasia. Nanostructures were based on self-assembling biodegradable molecules known as peptide amphiphiles. The targeting motif was a collagen-binding peptide, and the therapeutic moiety was added by S-nitrosylation of cysteine residues. As a result, structure of the nanofibers was characterized by transmission electron microscopy and small-angle X-ray scattering. S-nitrosylation was confirmed by mass spectrometry, and nitric oxide (NO) release was assessed electrochemically and by chemiluminescent detection. The balloon carotid artery injury model was performed on 10-week-old male Sprague-Dawley rats. Immediately after injury, nanofibers were administered systemically via tail vein injection. S-nitrosylated (S-nitrosyl [SNO])-targeted nanofibers significantly reduced neointimal hyperplasia 2 weeks and 7 months following balloon angioplasty, with no change in inflammation. This is the first time that an S-nitrosothiol (RSNO)-based therapeutic was shown to have targeted local effects after systemic administration. This approach, combining supramolecular nanostructures with a therapeutic NO-based payload and a targeting moiety, overcomes the limitations of delivering NO to a site of interest, avoiding undesirable systemic side effects. In conclusion, we successfully synthesized and characterized an RSNO-based therapy that when administered systemically, targets directly to the site of vascular injury. By integrating therapeutic and targeting chemistries, these targeted SNO nanofibers provided durable inhibition of neointimal hyperplasia in vivo and show great potential as a platform to treat cardiovascular diseases

Research Organization:
Northwestern Univ., Chicago, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1342729
Journal Information:
Antioxidants and Redox Signaling, Vol. 24, Issue 8; ISSN 1523-0864
Publisher:
Mary Ann Liebert, Inc.Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 37 works
Citation information provided by
Web of Science

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Cited By (9)

Nanotherapies for Treatment of Cardiovascular Disease: a Case for Antioxidant Targeted Delivery journal June 2019
Stimulation of brain nicotinic acetylcholine receptors activates adrenomedullary outflow via brain inducible NO synthase-mediated S -nitrosylation: SNO in nAChR-mediated adrenomedullary outflow journal August 2018
Insights on Localized and Systemic Delivery of Redox-Based Therapeutics journal January 2018
Nanoparticulate drug delivery systems for the treatment of neglected tropical protozoan diseases journal January 2019
Light Sheet Fluorescence Microscopy as a New Method for Unbiased Three-Dimensional Analysis of Vascular Injury posted_content January 2020
Nanoparticle Therapy for Vascular Diseases journal April 2019
The benefits of macromolecular hydrogen sulfide prodrugs journal January 2018
Light sheet fluorescence microscopy as a new method for unbiased three-dimensional analysis of vascular injury journal February 2020
Insights on localized and systemic delivery of redox-based therapeutics text January 2018

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