Biodegradable MRI Visible Drug Eluting Stent Reinforced by Metal Organic Frameworks

Rezvani Alanagh Hamideh, Babak Akbari, Parinaz Fathi, Santosh K. Misra, Andre Sutrisno, Fan Lam, Dipanjan Pan

Research output: Contribution to journalArticlepeer-review

Abstract

Metal–organic frameworks (MOFs) have applications in numerous fields. However, the development of MOF-based “theranostic” macroscale devices is not achieved. Here, heparin-coated biocompatible MOF/poly(ε-caprolactone) (PCL) “theranostic” stents are developed, where NH2-Materials of Institute Lavoisier (MIL)-101(Fe) encapsulates and releases rapamycin (an immunosuppressive drug). These stents also act as a remarkable source of contrast in ex vivo magnetic resonance imaging (MRI) compared to the invisible polymeric stent. The in vitro release patterns of heparin and rapamycin respectively can ensure a type of programmed model to prevent blood coagulation immediately after stent placement in the artery and stenosis over a longer term. Due to the presence of hydrolysable functionalities in MOFs, the stents are shown to be highly biodegradable in degradation tests under various conditions. Furthermore, there is no compromise of mechanical strength or flexibility with MOF compositing. The system described here promises many biomedical applications in macroscale theranostic devices. The use of MOF@PCL can render a medical device MRI-visible while simultaneously acting as a carrier for therapeutic agents.

Original languageEnglish (US)
Article number2000136
JournalAdvanced Healthcare Materials
Volume9
Issue number14
DOIs
StatePublished - Jul 1 2020

Keywords

  • MRI
  • biodegradable implants
  • drug eluting stents
  • metal organic frameworks
  • theranostics

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering
  • Pharmaceutical Science

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