Metabolism studies of 4 Cl-CUMYL-PINACA, 4 F-CUMYL-5F-PINACA and 4 F-CUMYL-5F-PICA using human hepatocytes and LC-QTOF-MS analysis

Linköpings universitet, Avdelningen för klinisk kemi och farmakologi Linköpings universitet, Medicinska fakulteten Linköpings universitet, Institutionen för fysik, kemi och biologi Linköpings universitet, Tekniska fakulteten Natl Board Forens Med, Dept Forens Genet & Forens Toxicol, Linkoping, Sweden Natl Board Forens Med, Dept Forens Genet & Forens Toxicol, Linkoping, Sweden; Avans Univ Appl Sci, Netherlands Natl Board Forens Med, Dept Forens Genet & Forens Toxicol, Linkoping, Sweden; RTI Int, NC USA Natl Board Forens Med, Dept Forens Genet & Forens Toxicol, Linkoping, Sweden Univ Dundee, Scotland Natl Board Forens Med, Dept Forens Genet & Forens Toxicol, Linkoping, Sweden WILEY 2023

4 Cl-cumyl-PINACA (SGT-157), 4 F-cumyl-5F-PINACA (4F-cumyl-5F-PINACA, SGT-65) and 4 F-cumyl-5F-PICA (4F-cumyl-5F-PICA, SGT-64) are a series of new halogenated cumyl synthetic cannabinoid receptor agonists (SCRAs). Due to rapid metabolism, monitoring and screening for SCRAs in biological matrices requires identification of their metabolites. It is an essential tool for estimating their spread and fluctuations in the global illicit market. The purpose of this study was to identify human biotransformations of 4 Cl-cumyl-PINACA, 4 F-cumyl-5F-PINACA and 4 F-cumyl-5F-PICA in vitro and characterize for the first time the metabolic pathways of halogenated cumyl SCRAs. 4 Cl-cumyl-PINACA, 4 F-cumyl-5F-PINACA and 4 F-cumyl-5F-PICA were incubated with human hepatocytes in duplicates for 0, 1, 3 and 5 h. The supernatants were analysed in data-dependent acquisition on a UHPLC-QToF-MS, and the potential metabolites were tentatively identified. A total of 11 metabolites were detected for 4 Cl-cumyl-PINACA, 21 for 4 F-cumyl-5F-PINACA and 10 for 4 F-cumyl-5F-PICA. The main biotransformations were oxidative defluorination, followed by hydroxylation with dehydrogenation, N-dealkylation, dihydrodiol formation and glucuronidation. Hydroxylations were most common at the tail moieties with higher abundancy for indole than indazole compounds. N-dealkylations were more common for fluorinated tail chain compounds than the non-fluorinated 4 Cl-cumyl-PINACA. In conclusion, many metabolites retained halogen groups at the cumyl moieties which, in various combinations, may be suitable as analytical biomarkers.
Funding Agencies|VINNOVA [2019-03566]; Eurostars-2 Joint Programme [E! 113377]; European Union; Swedens Innovation Agency Vinnova; Strategic Research Area in Forensic Sciences [2016:7]

human hepatocytes; metabolism; metabolites; new psychoactive substances; synthetic cannabinoids; Pharmaceutical Sciences; Farmaceutiska vetenskaper; Article in journal; info:eu-repo/semantics/article; text

10.1111.bcpt.13829

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info:eu-repo/semantics/openAccess

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UPE oai:DiVA.org:liu-191374
0000-0001-6712-652X
0000-0001-5977-3049
0000-0002-8015-5728
doi:10.1111/bcpt.13829
PMID 36544361
ISI:000906447600001
1372213769

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