Issue 17, 2011

A smart magnetic resonance imaging contrast agent responsive to adenosine based on a DNA aptamer-conjugated gadolinium complex

Abstract

We report a general strategy for developing a smart MRI contrast agent for the sensing of small molecules such as adenosine based on a DNA aptamer that is conjugated to a Gd compound and a protein streptavidin. The binding of adenosine to its aptamer results in the dissociation of the Gd compound from the large protein, leading to decreases in the rotational correlation time and thus change of MRI contrast.

Graphical abstract: A smart magnetic resonance imaging contrast agent responsive to adenosine based on a DNA aptamer-conjugated gadolinium complex

Supplementary files

Article information

Article type
Communication
Submitted
09 1月 2011
Accepted
03 3月 2011
First published
22 3月 2011

Chem. Commun., 2011,47, 4998-5000

A smart magnetic resonance imaging contrast agent responsive to adenosine based on a DNA aptamer-conjugated gadolinium complex

W. Xu and Y. Lu, Chem. Commun., 2011, 47, 4998 DOI: 10.1039/C1CC10161G

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