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Imaging of Chemokine Receptor 4 Expression in Neuroendocrine Tumors - a Triple Tracer Comparative Approach
Zitieren Sie bitte immer diese URN: urn:nbn:de:bvb:20-opus-158008
- C-X-C motif chemokine receptor 4 (CXCR4) and somatostatin receptors (SSTR) are overexpressed in gastro-entero-pancreatic neuroendocrine tumors (GEP-NET). In this study, we aimed to elucidate the feasibility of non-invasive CXCR4 positron emission tomography/computed tomography (PET/CT) imaging in GEP-NET patients using [\(^{68}\)Ga]Pentixafor in comparison to \(^{68}\)Ga-DOTA-D-Phe-Tyr3-octreotide ([\(^{68}\)Ga]DOTATOC) and \(^{18}\)F-fluorodeoxyglucose ([\(^{18}\)F]FDG). Twelve patients with histologically proven GEP-NET (3xG1, 4xG2, 5xG3)C-X-C motif chemokine receptor 4 (CXCR4) and somatostatin receptors (SSTR) are overexpressed in gastro-entero-pancreatic neuroendocrine tumors (GEP-NET). In this study, we aimed to elucidate the feasibility of non-invasive CXCR4 positron emission tomography/computed tomography (PET/CT) imaging in GEP-NET patients using [\(^{68}\)Ga]Pentixafor in comparison to \(^{68}\)Ga-DOTA-D-Phe-Tyr3-octreotide ([\(^{68}\)Ga]DOTATOC) and \(^{18}\)F-fluorodeoxyglucose ([\(^{18}\)F]FDG). Twelve patients with histologically proven GEP-NET (3xG1, 4xG2, 5xG3) underwent [\(^{68}\)Ga]DOTATOC, [\(^{18}\)F]FDG, and [\(^{68}\)Ga]Pentixafor PET/CT for staging and planning of the therapeutic management. Scans were analyzed on a patient as well as on a lesion basis and compared to immunohistochemical staining patterns of CXCR4 and somatostatin receptors SSTR2a and SSTR5. [\(^{68}\)Ga]Pentixafor visualized tumor lesions in 6/12 subjects, whereas [\(^{18}\)F]FDG revealed sites of disease in 10/12 and [\(^{68}\)Ga]DOTATOC in 11/12 patients, respectively. Regarding sensitivity, SSTR-directed PET was the superior imaging modality in all G1 and G2 NET. CXCR4-directed PET was negative in all G1 NET. In contrast, 50% of G2 and 80% of G3 patients exhibited [\(^{68}\)Ga]Pentixafor-positive tumor lesions. Whereas CXCR4 seems to play only a limited role in detecting well-differentiated NET, increasing receptor expression could be non-invasively observed with increasing tumor grade. Thus, [\(^{68}\)Ga]Pentixafor PET/CT might serve as non-invasive read-out for evaluating the possibility of CXCR4-directed endoradiotherapy in advanced dedifferentiated SSTR-negative tumors.…
Autor(en): | Rudolf A. Werner, Alexander Weich, Takahiro Higuchi, Jan S. Schmid, Andreas Schirbel, Michael Lassmann, Vanessa Wild, Martina Rudelius, Theodor Kudlich, Ken Herrmann, Michael Scheurlen, Andreas K. Buck, Saskia Kropf, Hans-Jürgen Wester, Constantin Lapa |
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URN: | urn:nbn:de:bvb:20-opus-158008 |
Dokumentart: | Artikel / Aufsatz in einer Zeitschrift |
Institute der Universität: | Medizinische Fakultät / Klinik und Poliklinik für Nuklearmedizin |
Medizinische Fakultät / Pathologisches Institut | |
Medizinische Fakultät / Medizinische Klinik und Poliklinik II | |
Sprache der Veröffentlichung: | Englisch |
Titel des übergeordneten Werkes / der Zeitschrift (Englisch): | Theranostics |
Erscheinungsjahr: | 2017 |
Band / Jahrgang: | 7 |
Heft / Ausgabe: | 6 |
Seitenangabe: | 1489-1498 |
Originalveröffentlichung / Quelle: | Theranostics 2017; 7(6): 1489-1498. doi: 10.7150/thno.18754 |
DOI: | https://doi.org/10.7150/thno.18754 |
Allgemeine fachliche Zuordnung (DDC-Klassifikation): | 6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit |
Normierte Schlagworte (GND): | Positronen-Emissions-Tomografie |
Freie Schlagwort(e): | CXCR4; DOTATOC; PET/CT; PRRT; SSTR; [\(^{68}\)Ga]Pentixafor; chemokine receptor; neuroendocrine tumor; peptide receptor radionuclide therapy |
Datum der Freischaltung: | 08.03.2018 |
EU-Projektnummer / Contract (GA) number: | 701983 |
OpenAIRE: | OpenAIRE |
Sammlungen: | Open-Access-Publikationsfonds / Förderzeitraum 2017 |
Lizenz (Deutsch): | CC BY-NC: Creative-Commons-Lizenz: Namensnennung, Nicht kommerziell 4.0 International |