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Title

Unambiguous detection of atherosclerosis using bioorthogonal nanomaterials

AuthorsPellico, Juan; Fernández-Barahona, Irene; Benito, Marina; Gaitán-Simón, Ángel; Gutiérrez, Lucía ; Ruiz-Cabello, Jesús; Herranz, Fernando
KeywordsMolecular imaging
Iron oxide
Gallium-68
Atherosclerosis
Nano-radiomaterials
Issue Date2019
PublisherElsevier
CitationNanomedicine: Nanotechnology, Biology, and Medicine 17: 26-35 (2019)
AbstractThe importance of atherosclerosis is driving research to create improved diagnostic tools based on molecular imaging. Pretargeted imaging is the use of bioorthogonal probes that selectively accumulate upon reaction with a pre-modified biomolecule in vivo. To date, this very promising approach has not been applied to atherosclerosis. Neither has been the use of a single nano-radiomaterial for PET / T-MR imaging of atherosclerosis. Here, we synthesized bioorthogonal nano-radiomaterials for in vivo pretargeted molecular imaging in a mouse model of atherosclerosis. Based on tetrazine-ligation, these functionalized Ga iron oxide nano-radiomaterials provide simultaneous PET and T-MRI signals and selectively accumulate in atherosclerotic plaques in mice sequentially injected with trans-cyclooctene-modified antibodies against oxidized LDL followed by the hybrid nano-radiomaterial. Our results demonstrate the ability of this approach to unambiguously detect atherosclerosis. Furthermore, we show the first example of how hybrid imaging can be used for pretargeted bioorthogonal molecular imaging with nanomaterials.
Publisher version (URL)http://dx.doi.org/10.1016/j.nano.2018.12.015
URIhttp://hdl.handle.net/10261/176957
Identifiersdoi: 10.1016/j.nano.2018.12.015
issn: 1549-9642
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(IQM) Artículos
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