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In vivo molecular imaging of chemokine receptor CXCR4 expression in patients with advanced multiple myeloma

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Item Type:Article
Title:In vivo molecular imaging of chemokine receptor CXCR4 expression in patients with advanced multiple myeloma
Creators Name:Philipp-Abbrederis, K., Herrmann, K., Knop, S., Schottelius, M., Eiber, M., Lückerath, K., Pietschmann, E., Habringer, S., Gerngroß, C., Franke, K., Rudelius, M., Schirbel, A., Lapa, C., Schwamborn, K., Steidle, S., Hartmann, E., Rosenwald, A., Kropf, S., Beer, A.J., Peschel, C., Einsele, H., Buck, An.K., Schwaiger, M., Götze, K., Wester, H.J. and Keller, U.
Abstract:CXCR4 is a G-protein-coupled receptor that mediates recruitment of blood cells toward its ligand SDF-1. In cancer, high CXCR4 expression is frequently associated with tumor dissemination and poor prognosis. We evaluated the novel CXCR4 probe [(68)Ga]Pentixafor for in vivo mapping of CXCR4 expression density in mice xenografted with human CXCR4-positive MM cell lines and patients with advanced MM by means of positron emission tomography (PET). [(68)Ga]Pentixafor PET provided images with excellent specificity and contrast. In 10 of 14 patients with advanced MM [(68)Ga]Pentixafor PET/CT scans revealed MM manifestations, whereas only nine of 14 standard [(18)F]fluorodeoxyglucose PET/CT scans were rated visually positive. Assessment of blood counts and standard CD34(+) flow cytometry did not reveal significant blood count changes associated with tracer application. Based on these highly encouraging data on clinical PET imaging of CXCR4 expression in a cohort of MM patients, we conclude that [(68)Ga]Pentixafor PET opens a broad field for clinical investigations on CXCR4 expression and for CXCR4-directed therapeutic approaches in MM and other diseases.
Keywords:Chemokine Receptor, CXCR4, In Vivo Imaging, Multiple Myeloma, Positron Emission Tomography, Animals, Mice
Source:EMBO Molecular Medicine
ISSN:1757-4676
Publisher:EMBO Press / Wiley
Volume:7
Number:4
Page Range:477-487
Date:1 April 2015
Official Publication:https://doi.org/10.15252/emmm.201404698
PubMed:View item in PubMed

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