| Literature DB >> 32292548 |
Fei Liu1,2, Xiaoyi Guo2, Teli Liu2, Xiaoxia Xu2, Nan Li2, Chiyi Xiong3, Chun Li3, Hua Zhu2, Zhi Yang2.
Abstract
64Cu-labeled new pan-somatostatin receptors (pan-SSTRs) probe PA1 was synthesized, characterized, and evaluated by in vitro and in vivo experiments. [64Cu]NOTA-PA1 was obtained with high specific activity, high radiochemical purity, and good stability. Cell uptake of [64Cu]NOTA-PA1 was higher than that of [64Cu]DOTA-TATE in MCF-7, A549, BGC823, and HT-29 cell lines. [64Cu]NOTA-PA1 showed high binding affinity for SSTRs expressed in A549 cells. The in vivo biodistribution and micropositron emission tomography (micro-PET) imaging studies of [64Cu]NOTA-PA1 revealed good detection ability in MCF-7 and A549 xenografted nude mice. The radiosynthesis, quality control, and preliminary biological evaluation of [64Cu]NOTA-PA1 have broaden the application of radiolabeled octreotide for SSTRs imaging, which could act as a potential multisubtypes targeted radiotracer for imaging SSTRs-positive tumors.Entities:
Year: 2020 PMID: 32292548 PMCID: PMC7153030 DOI: 10.1021/acsmedchemlett.9b00544
Source DB: PubMed Journal: ACS Med Chem Lett ISSN: 1948-5875 Impact factor: 4.345