Synthesis and Evaluation of [67Ga]-AMD3100: A Novel Imaging Agent for Targeting the Chemokine Receptor CXCR4
| Autor: | Amir Reza Jalilian, Ali Khalaj, Behrouz Alirezapoor, Mehraban Pouladi, Yousef Fazaeli, Davoud Beiki, Stephan Maus, Ayuob Aghanejad |
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| Rok vydání: | 2014 |
| Předmět: |
CXCR4
Biodistribution Pathology medicine.medical_specialty medicine.diagnostic_test business.industry Breast carcinoma Gallium-67 Wild type Pharmaceutical Science Washout Spleen Scintigraphy Molecular biology Imaging agent Chemokine receptor medicine.anatomical_structure SPECT medicine Specific activity business Research Article |
| Zdroj: | Scientia Pharmaceutica Volume 82 Issue 1 Pages 29-42 |
| ISSN: | 2218-0532 0036-8709 |
| DOI: | 10.3797/scipharm.1305-18 |
| Popis: | In order to develop a possible C-X-C chemokine receptor type 4 (CXCR4) imaging agent for oncological scintigraphy, [67Ga]-labeled 1,1′-[1,4-Phenylene-bis(methylene)]bis(1,4,8,11-tetraazacyclotetradecane) ([67Ga]-AMD3100) was prepared by using [67Ga]GaCl3 and AMD-3100 for 2 h at 50 °C (radiochemical purity: > 95% ITLC, > 99% HPLC, specific activity: 1800–2000 TBq/mmol) in acetate buffer. The stability of the complex was checked in the presence of human serum (37 °C) and in the final formulation for four days. The biodistribution of the labeled compound in the vital organs of wild type Sprague-Dawley rats was determined and compared with that of the free Ga3+ cation up to 48 h. Considering the spleen as the target organ, the best target:non target ratios were obtained 48 h post-injection (spleen:blood ratio 14.5 and spleen:muscle ratio 88.4). Initial SPECT images and biodistribution results in the wild type rats matched each other and demonstrated rapid washout of the tracer from the urinary tract. SPECT images in human breast carcinoma-bearing mice demonstrated a detectable tumor uptake in 48 h post-injection. |
| Databáze: | OpenAIRE |
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