Establishing Reliable Cu-64 Production Process: From Target Plating to Molecular Specific Tumor Micro-PET Imaging.

Establishing Reliable Cu-64 Production Process: From Target Plating to Molecular Specific Tumor Micro-PET Imaging.
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建立可靠的 Cu-64 生产工艺:从靶标电镀到分子特异性肿瘤微型 PET 成像

DOI:
10.3390/molecules22040641
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发表时间:
2017-04-17
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Yang Z
Yang Z
中科院分区:
其他
文献类型:
--
作者:
Xie Q;Zhu H;Wang F;Meng X;Ren Q;Xia C;Yang Z

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铜-64是用于正电子发射断层扫描(PET)的有用的放射性同位素。由于应用范围广泛,对低金属杂质的64 Cu的需求正在增加。在这里,我们报告了一个简单的方法,用于高比活度的64 Cu的有效生产使用回旋加速器用于生物医学应用。我们设计了一种新的设备,基于镀富集64 Ni作为目标,并使用自动离子交换色谱法,以良好的放射化学和化学产率和纯度,有效地纯化铜-64后,照射和溶解的目标。使用99.32%富集的64 Ni产生的64 Cu放射性核素的密度为61.4 ± 5.0 mg/cm 2,达到大于200 mCi的总放射性,比活度高达5.6 GBq/μmoL L。将其进一步掺入到修饰的单克隆抗体DOTA-rituximab中,合成64 Cu-DOTA-rituximab,其成功地用于micro-PET成像。
Copper-64 is a useful radioisotope for positron emission tomography (PET). Due to the wide range of applications, the demand of 64Cu with low metallic impurities is increasing. Here we report a simple method for the efficient production of high specific activity 64Cu using a cyclotron for biomedical application. We designed new equipment based on the plating of enriched 64Ni as the target, and used automated ion exchange chromatography to purify copper-64 efficiently after irradiation and dissolution of the target in good radiochemical and chemical yield and purity. The 64Cu radionuclide produced using 99.32% enriched 64Ni with a density of 61.4 ± 5.0 mg/cm2, reaching a total radioactivity greater than 200 mCi, with specific activity up to 5.6 GBq/μmoL. It was further incorporated into modified monoclonal antibody DOTA-rituximab to synthesize 64Cu-DOTA-rituximab, which was used successfully for micro-PET imaging.
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