Heteroditopic Binding of Magnetic Resonance Contrast Agents for Increased Relaxivity

被引:25
|
作者
Zhang, Zhaoda [1 ]
Kolodziej, Andrew F.
Greenfield, Matthew T.
Caravan, Peter [1 ]
机构
[1] Harvard Univ, Sch Med, Massachusetts Gen Hosp, AA Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA
关键词
fibrin; gadolinium; magnetic resonance imaging; peptides; rotational dynamics; MRI; THROMBUS; EP-2104R;
D O I
10.1002/anie.201007689
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Kept within bounds: For peptide-targeted contrast agents, internal motion limits the relaxivity gain. A focused library approach identified an N-terminal thymine peptide nucleic acid (PNA) that reaches an additional binding pocket on the protein fibrin. The heteroditopic binding rigidifies the molecule upon binding, resulting in increased protein-bound relaxivity (see picture). Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码:2621 / 2624
页数:4
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