Kadirvel M, Fairclough M, Cawthorne C, Rowling EJ, Babur M, McMahon A, Birkket P, Smigova A, Freeman S, Williams KJ, Brown G. Detection of apoptosis by PET/CT with the diethyl ester of [¹⁸F]ML-10 and fluorescence imaging with a dansyl analogue.
Bioorg Med Chem 2014;
22:341-9. [PMID:
24290974 DOI:
10.1016/j.bmc.2013.11.019]
[Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 11/07/2013] [Accepted: 11/11/2013] [Indexed: 10/26/2022]
Abstract
The diethyl ester of [(18)F]ML-10 is a small molecule apoptotic PET probe for cancer studies. Here we report a novel multi-step synthesis of the diethyl ester of ML-10 in excellent yields via fluorination using Xtal-Fluor-E. In addition, a one-pot radiosynthesis of the diethyl ester of [(18)F]ML-10 from nucleophilic [(18)F]fluoride was completed in 23% radiochemical yield (decay corrected). The radiochemical purity of the product was ≥99%. The diethyl ester of [(18)F]ML-10 was used in vivo to detect apoptosis in the testes of mice. In parallel studies, the dansyl-ML-10 diethyl ester was prepared and used to detect apoptotic cells in an in vitro cell based assay.
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