Polymeric PARACEST MRI contrast agents as potential reporters for gene therapy

Yunkou Wu, Christiane E. Carney, Michael Denton, Elaine Hart, Piyu Zhao, Daniel Streblow, A. Dean Sherry, Mark Woods

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Gene therapy is a potentially powerful treatment approach that targets molecular remedies for disease. Among other challenges it remains difficult to monitor gene delivery and its downstream metabolic consequences. Approaches to MRI gene reporters have been reported but few have the potential for translation beyond isolated cell systems. Herein, we report a polycationic polymer MRI contrast agent that binds to DNA in a ratio of one monomer unit per phosphate group of DNA. Significantly, this binding event diminishes the MR contrast signal from the agent itself potentially providing a platform for imaging delivery and release of a gene into cells and tissues. Importantly, we demonstrate here the proof of concept that a positively charged polymeric contrast agent can also act as a transfection agent, delivering the gene for encoding green fluorescent protein into cells. These observations provide support for the radical, new idea of creating a combined transfection/imaging agent for monitoring gene delivery in real time by MRI.

Original languageEnglish (US)
Pages (from-to)5333-5338
Number of pages6
JournalOrganic and Biomolecular Chemistry
Volume8
Issue number23
DOIs
StatePublished - Dec 7 2010

Fingerprint

gene therapy
Gene therapy
Reporter Genes
Genetic Therapy
genes
Magnetic resonance imaging
Contrast Media
Genes
delivery
Transfection
deoxyribonucleic acid
cells
DNA
Imaging techniques
Green Fluorescent Proteins
Polymers
Phosphates
phosphates
coding
platforms

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Biochemistry

Cite this

Polymeric PARACEST MRI contrast agents as potential reporters for gene therapy. / Wu, Yunkou; Carney, Christiane E.; Denton, Michael; Hart, Elaine; Zhao, Piyu; Streblow, Daniel; Sherry, A. Dean; Woods, Mark.

In: Organic and Biomolecular Chemistry, Vol. 8, No. 23, 07.12.2010, p. 5333-5338.

Research output: Contribution to journalArticle

Wu, Yunkou ; Carney, Christiane E. ; Denton, Michael ; Hart, Elaine ; Zhao, Piyu ; Streblow, Daniel ; Sherry, A. Dean ; Woods, Mark. / Polymeric PARACEST MRI contrast agents as potential reporters for gene therapy. In: Organic and Biomolecular Chemistry. 2010 ; Vol. 8, No. 23. pp. 5333-5338.
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