Photomutagenicity of chlorpromazine and its N-demethylated metabolites assessed by NGS

Author:

Agúndez José A. G.,García-Martín Elena,García-Lainez Guillermo,Miranda Miguel A.,Andreu Inmaculada

Abstract

AbstractThe human genome is constantly attacked by endogenous and exogenous agents (ultraviolet light, xenobiotics, reactive oxygen species), which can induce chemical transformations leading to DNA lesions. To combat DNA damage, cells have developed several repair mechanisms; however, if the repair is defective, DNA lesions lead to permanent mutations. Single-cell gel electrophoresis (COMET assay) is a sensitive and well-established technique for quantifying DNA damage in individual cells. Nevertheless, this tool lacks relationship with mutagenesis. Therefore, to identify errors that give rise to mutations it would be convenient to test an alternative known procedure, such as next generation sequencing (NGS). Thus, the present work aims to evaluate the photomutagenicity of neuroleptic drug chlorpromazine (CPZ), and its N-demethylated metabolites using COMET assay and to test NGS as an alternative method to assess photomutagenesis. In this context, upon exposure to UVA radiation, COMET assay reveals CPZ-photosensitized DNA damage partially repaired by cells. Conversely with this result, metabolites demethylchlorpromazine (DMCPZ) and didemethylchlorpromazine (DDMCPZ) promote extensive DNA-photodamage, hardly repaired under the same conditions. Parallel assessment of mutagenesis by NGS is consistent with these results with minor discrepancies for DDMCPZ. To our knowledge, this is the first example demonstrating the utility of NGS for evaluating drug-induced photomutagenicity.

Publisher

Springer Science and Business Media LLC

Subject

Multidisciplinary

Cited by 7 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Chlorpromazine;Encyclopedia of Toxicology;2024

2. Cellular photo(geno)toxicity of gefitinib after biotransformation;Frontiers in Pharmacology;2023-06-07

3. Genotoxicity of Psychotropic Drugs in Experimental and Clinical Studies;Neuroscience and Behavioral Physiology;2023-06

4. Drug Photosensitivity;European Handbook of Dermatological Treatments;2023

5. Evaluation of phototoxicity induced by the anticancer drug rucaparib;Scientific Reports;2022-03-02

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