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- W2069565582 abstract "Dual-modality PET/MR platforms add a new dimension to patient diagnosis with high resolution, functional, and anatomical imaging. The full potential of this emerging hybrid modality could be realized by using a corresponding dual-modality probe. Here, we report pegylated liposome (LP) formulations, housing a MR T1 contrast agent (Gd) and the positron-emitting 89Zr (half-life: 3.27 days), for simultaneous PET and MR tumor imaging capabilities. 89Zr oxophilicity was unexpectedly found advantageous for direct radiolabeling of preformed paramagnetic LPs. LPs were conjugated with octreotide to selectively target neuroendocrine tumors via human somatostatin receptor subtype 2 (SSTr2). 89Zr-Gd-LPs and octreotide-conjugated homolog were physically, chemically and biologically characterized. 89Zr-LPs showed reasonable stability over serum proteins and chelator challenges for proof-of-concept in vitro and in vivo investigations. Nuclear and paramagnetic tracking quantified superior SSTr2-recognition of octreotide-LP compared to controls. This study demonstrated SSTr2-targeting specificity along with direct chelator-free 89Zr-labeling of LPs and dual PET/MR imaging properties." @default.
- W2069565582 created "2016-06-24" @default.
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- W2069565582 date "2012-12-07" @default.
- W2069565582 modified "2023-10-16" @default.
- W2069565582 title "89Zr-Labeled Paramagnetic Octreotide-Liposomes for PET-MR Imaging of Cancer" @default.
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- W2069565582 doi "https://doi.org/10.1007/s11095-012-0929-8" @default.
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