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• W2155992820 abstract "Natural and synthetic compounds characterized by an anthraquinone nucleus represent an important class of anti-neoplastic agents, the mechanism of action of which is related to intercalation into DNA. Ametantrone (AM) is a synthetic 9,10-anthracenedione bearing two (hydroxyethylamino)ethylamino residues at positions 1 and 4; along with other anthraquinones and anthracyclines, it shares a polycyclic intercalating moiety and charged side chains that stabilize DNA binding. All these drugs elicit adverse side effects, which represent a challenge for antitumor chemotherapy. In the present work the structure of AM was augmented with appropriate groups that target well-defined base pairs in the major groove. These should endow AM with DNA sequence selectivity. We describe the rationale for the synthesis and the evaluation of activity of a new series of compounds in which the planar anthraquinone is conjugated at positions 1 and 4 through the side chains of AM or other bioisosteric linkers to appropriate dipeptides. The designed novel AM derivatives were shown to selectively stabilize two oligonucleotide duplexes that both have a palindromic GC-rich hexanucleotide core, but their stabilizing effects on a random DNA sequence was negligible. In the case of the most effective compound, the 1,4-bis-[Gly-(L-Lys)] derivative of AM, the experimental results confirm the predictions of earlier theoretical computations. In contrast, AM had equal stabilizing effects on all three sequences and showed no preferential binding. This novel peptide derivative can be classified as a strong binder regarding the sequences that it selectively targets, possibly opening the exploitation of less cytotoxic conjugates of AM to the targeted treatment of oncological and viral diseases." @default.
• W2155992820 created "2016-06-24" @default.
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• W2155992820 date "2010-05-10" @default.
• W2155992820 modified "2023-10-16" @default.
• W2155992820 title "Rational Design, Synthesis, and DNA Binding Properties of Novel Sequence-Selective Peptidyl Congeners of Ametantrone" @default.
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• W2155992820 doi "https://doi.org/10.1002/cmdc.201000106" @default.
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• W2155992820 hasPublicationYear "2010" @default.
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