Abstract:
:Peptide modification with fatty acids is an effective method to improve peptide performance. We previously investigated the fatty acid modification of R-lycosin-I, a cytotoxic peptide derived from lycosin-I from the venom of the spider Lycosa singoriensis. In this study, we further investigated the position effects of fatty acid modification of lycosin-I. Dodecanoic acid was covalently coupled to the α/ε-amino group of one of the seven Lys residues of lycosin-I, generating eight different lipopeptides. Although all the lipopeptides had significantly improved cytotoxicity compared with lycosin-I, they displayed different cytotoxic potencies and profiles, which might be explained by multifactors including charge, size, helicity, hydrophobicity, and so forth. Of the eight lipopeptides, L-C12 demonstrated highest cytotoxicity and antimetastasis activity in two-dimensional cells, tumor spheroids, subcutaneous transplantation mouse models, and experimental melanoma metastasis mouse models. Collectively, our finding indicated that fatty acid modification position plays important roles in physiochemical parameters and biological activities of cytotoxic peptides.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Zhang P,Jian C,Jian S,Zhang Q,Sun X,Nie L,Liu B,Li F,Li J,Liu M,Liang S,Zeng Y,Liu Zdoi
10.1021/acs.jmedchem.9b01126subject
Has Abstractpub_date
2019-12-26 00:00:00pages
11108-11118issue
24eissn
0022-2623issn
1520-4804journal_volume
62pub_type
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