Polymeric Gd-DOTA amphiphiles form spherical and fibril-shaped nanoparticle MRI contrast agents

Lyndsay M. Randolph, Clare L.M. Leguyader, Michael E. Hahn, Christopher M. Andolina, Joseph P. Patterson, Robert F. Mattrey, Jill E. Millstone, Mauro Botta, Miriam Scadeng, Nathan C. Gianneschi

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

A Gd3+-coordinated polymerizable analogue of the MRI contrast agent Gd-DOTA was used to prepare amphiphilic block copolymers, with hydrophilic blocks composed entirely of the polymerized contrast agent. The resulting amphiphilic block copolymers assemble into nanoparticles (NPs) of spherical- or fibril-shape, each demonstrating enhanced relaxivity over Gd-DOTA. As an initial examination of their behavior in vivo, intraperitoneal (IP) injection of NPs into live mice was performed, showing long IP residence times, observed by MRI. Extended residence times for particles of well-defined morphology may represent a valuable design paradigm for treatment or diagnosis of peritoneal malignances.

Original languageEnglish (US)
Pages (from-to)4230-4236
Number of pages7
JournalChemical Science
Volume7
Issue number7
DOIs
StatePublished - 2016

ASJC Scopus subject areas

  • Chemistry(all)

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