RT Journal Article SR Electronic T1 Synthesis and Correlation Evaluation of 18F-(2S,4R)4-fluoroglutamine in c-Myc expression in Breast Cancer JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 1292 OP 1292 VO 59 IS supplement 1 A1 Fei Liu A1 Hua Zhu A1 Yan Zhang A1 Jianhua Yang A1 Lifang Zhang A1 Xiaoxia Xu A1 Xiaoyi Guo A1 Lin Zhu A1 Hank Kung A1 Zhi Yang YR 2018 UL http://jnm.snmjournals.org/content/59/supplement_1/1292.abstract AB 1292Objectives: It is generally accepted now that progression of pathogenesis processes in tumor cells lead to a significant increase in glutamine metabolism, by which the tumor cells obtain metabolic energy and building blocks for maintaining growth and survival. We have evaluated the glutamine addiction in breast cells, MCF-7, by PET imaging with 18F-(2S,4R)4-fluoroglutamine in breast tumor cell, MCF-7, which are known to have c-Myc gene over expression. Methods: 18F-(2S,4R)4-fluoroglutamine was synthesized using the two-step chemical reaction and the radiochemical purity was determined by radio-high-performance liquid chromatography (Radio-HPLC). The stability of this tracer in PBS and saline buffers was measured. The Myc gene expression in MCF-7 cells was measured using qPCR. The correlation between Myc gene levels and in vitro cell uptakes of 18F-(2S,4R)4-fluoroglutamine in MCF-7 cells was compared with that of 18F-fluorodeoxyglucose (18F-FDG). In vitro biodistribution and micro-PET imaging studies of 18F-(2S,4R)4-fluoroglutamine were performed in MCF-7 bearing BALB/c nude mice. Results: 18F-(2S,4R)4-fluoroglutamine was synthesized with high radiochemical purity (>95 %) and the tracer was stable in PBS and saline buffers during 2 hr incubation. Myc gene was up regulated in MCF-7 cells as measured by qPCR. The cell uptake of 18F-(2S,4R)4-fluoroglutamine was higher in MCF-7 cells when compared to that of 18F-FDG. Both of the biodistribution and micro-PET images showed higher tumor accumulation of 18F-(2S,4R)4-fluoroglutamine in MCF-7 tumor models. Conclusion: 18F-(2S,4R)4-fluoroglutamine may be useful as a metabolic radiotracer for noninvasive imaging of breast cancer, in which the Myc gene expression is up regulated. Research Support: Beijing Natural Science Foundation Key Program (No. 7171002).