Magnetic resonance imaging of self-assembled biomaterial scaffolds

Steve R. Bull, Mustafa O. Guler, Rafael E. Bras, Palamadai N. Venkatasubramanian, Samuel I. Stupp, Thomas J. Meade

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78 Citations (Scopus)

Abstract

Current interest in biomaterials for tissue engineering and drug delivery applications have spurred research into self-assembling peptide amphiphiles (PAs). Nanofiber networks formed from self-assembling PAs can be used as biomaterial scaffolds with the advantage of specificity by the incorporation of peptide-epitopes. Imaging the materials noninvasively will give information as to their fate in vivo. We report here the synthesis and in vitro MR images of self-assembling peptide amphiphile contrast agents (PACAs) that form nanofibers. At 400 MHz using a 0.1 mM Gd(III) conjugate of the PA we observed a TI three times that of a control gel. The PA derivative was doped into various epitope bearing PA solutions and upon gelling resulted in a homogeneous biomaterial as imaged by MRI.

Original languageEnglish
Pages (from-to)1343-1348
Number of pages6
JournalBioconjugate Chemistry
Volume16
Issue number6
DOIs
Publication statusPublished - Nov 1 2005

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ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Biomedical Engineering
  • Pharmacology
  • Pharmaceutical Science
  • Organic Chemistry

Cite this

Bull, S. R., Guler, M. O., Bras, R. E., Venkatasubramanian, P. N., Stupp, S. I., & Meade, T. J. (2005). Magnetic resonance imaging of self-assembled biomaterial scaffolds. Bioconjugate Chemistry, 16(6), 1343-1348. https://doi.org/10.1021/bc050153h