This study reports the radiosynthesis of a new fluorine-18 glycosylated ‘click’ cyanoquinoline [18F]5 for positron emission tomography imaging of epidermal growth factor receptor (EGFR). The tracer was obtained in 47.7 ± 7.5% (n = 3) decay-corrected radiochemical yield from 2-[18F]fluoro-2-deoxy-β-d-glucopyranosyl azide, and the overall nondecay-corrected radiochemical yield from aqueous fluoride was 8.6 ± 2.3% (n = 3). An in vitro preliminary cellular uptake study showed selectivity of the tracer for EGFR-positive A431 cell lines versus EGFR-negative MCF-7 cell lines. [18F]5 tracer uptake in A431 cells was significantly reduced by addition of the cold isotope analogue compound 5.
本研究报告了用于
表皮生长因子受体(
EGFR)正电子发射断层成像的新型
氟-18糖基化 "点击 "
氰基
喹啉[18F]5的放射合成。从 2-[18F]fluoro-2-deoxy-β-d-glucopyranosyl azide 中获得的示踪剂的衰变校正放射
化学收率为 47.7 ± 7.5%(n = 3),而从
氟化
水溶液中获得的总体非衰变校正放射
化学收率为 8.6 ± 2.3%(n = 3)。一项体外初步细胞摄取研究显示,示踪剂对
表皮生长因子受体阳性的 A431 细胞株和
表皮生长因子受体阴性的 MCF-7 细胞株具有选择性。加入冷同位素类似物化合物 5 后,A431 细胞对 [18F]5 示踪剂的摄取明显减少。