[89Zr]Oxinate4 is a Positron Emission Tomography (PET) tracer for cell radiolabeling that can enable imaging techniques to help better understand cell trafficking in various diseases. Although several groups have synthetized this compound for use in preclinical studies, there is no available data regarding the production of [89Zr]Oxinate4 for human use. In this report, we describe the detailed production of [89Zr]Oxinate4 under USP <823> and autologous leukocyte radiolabeling under USP <797>. The final product presented high radiochemical purity and stability at 24 h post synthesis (>99%) and passed in all quality control assays required for clinical use. [89Zr]Oxinate4 did not compromise the white blood cells viability and did not show considerable cellular efflux up to 3 h post labeling. The translation of this technique into human use can provide insight into several disease mechanisms since [89Zr]Oxinate4 has the potential to label any cell subset of interest.
[89Zr]Oxinate4是一种用于细胞放射性标记的正电子发射断层扫描(PET)示踪剂,它能够通过成像技术帮助人们更好地了解各种疾病中的细胞迁移。尽管已有多个研究小组合成这种化合物用于临床前研究,但目前尚无关于[89Zr]Oxinate4生产用于人体的数据。在本报告中,我们详细描述了根据美国药典<823>生产[89Zr]Oxinate4和根据美国药典<797>进行自体白细胞放射性标记的过程。最终产品具有很高的放射
化学纯度和合成后24小时的稳定性(>99%),并通过了临床使用所需的所有质量控制检测。[89Zr]Oxinate4不会影响白细胞的活力,并且在标记后3小时内不会产生明显的细胞外排。由于[89Zr]Oxinate4可以标记任何感兴趣的细胞亚群,因此将该技术应用于人体研究可以深入了解多种疾病机理。