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J Inorg Biochem ; 219: 111425, 2021 06.
Article in English | MEDLINE | ID: mdl-33831713

ABSTRACT

A series of tripodal ferrocenyl bis-naphthalimide derivatives were synthesized and characterized. All of the bis-naphthalimide derivatives exhibited good DNA binding ability which was confirmed by ethidium bromide (EB) displacement experiment and ultraviolet (UV)-visible absorption titration. And the binding mode of these compounds was proved to be a hybrid binding mode by experiments. The cytotoxicity of synthesized compounds against 4 different human cancer cell lines (EC109, BGC823, SGC7901 and HEPG2) was evaluated by thiazolyl blue tetrazolium bromide (MTT) assay. All of the bis-naphthalimide derivatives exhibited good anticancer activity than the positive control drug (amonafide), which was due to the promotion of reactive oxygen species (ROS) level in test cancer cells by the reversible one-electron redox process of ferrocenyl bis-naphthalimide derivatives. Although there was no obvious relationship between the binding constants and the chain length, the structure cytotoxicity relationship revealed that the linker of n = 3, m = 1 was the best choice for the tested tripodol bis-naphthalimide derivatives. SYNOPSIS: A series of tripodal ferrocenyl bis-naphthalimide derivatives were synthesized to study the DNA binding ability and the cytotoxicity induced by reactive oxygen species. All of the compounds exhibited good DNA binding ability. And the structure cytotoxicity relationship revealed that the structure of 5h was the best choice.


Subject(s)
DNA/chemistry , Ferrous Compounds/chemistry , Naphthalimides/chemistry , Adenine/pharmacology , Antineoplastic Agents/chemistry , Antineoplastic Agents/pharmacology , Cell Line, Tumor , Drug Screening Assays, Antitumor/methods , Electrochemistry/methods , Ethidium/chemistry , Flow Cytometry/methods , Humans , Metallocenes/chemistry , Molecular Structure , Naphthalimides/chemical synthesis , Naphthalimides/pharmacology , Organophosphonates/pharmacology , Reactive Oxygen Species , Structure-Activity Relationship
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