Diabetes affects an increasing number of patients worldwide and is responsible for a significant rise in healthcare expenses. Imaging of β-cells in vivo is expected to contribute to an improved understanding of the underlying pathophysiology, improved diagnosis, and development of new treatment options for diabetes. Here, we describe the first radiosyntheses of [3H]-TAK875 and [18F]-TAK875 derivatives to be used as β-cell imaging probes addressing the free fatty acid receptor 1 (FFAR1/GPR40). The fluorine-labeled derivative showed similar agonistic activity as TAK875 in a functional assay. The radiosynthesis of the 18F-labelled tracer 2a was achieved with 16.7 ± 5.7% radiochemical yield in a total synthesis time of 60–70 min.
糖尿病影响着全球越来越多的患者,并导致医疗费用大幅上升。活体β细胞成像有望帮助人们更好地了解糖尿病的潜在病理生理学、改进诊断和开发新的治疗方案。在这里,我们首次描述了[3H]-
TAK875和[18F]-
TAK875衍
生物的放射合成,这两种衍
生物可用作针对游离
脂肪酸受体1(FFAR1/GPR40)的β细胞成像探针。在功能测试中,
氟标记衍
生物显示出与
TAK875 相似的激动活性。在总合成时间为 60-70 分钟的情况下,18F 标记示踪剂 2a 的放射合成率为 16.7 ± 5.7%。