Self-Assembly to Function: Design, Synthesis, and Broad Spectrum Antimicrobial Properties of Short Hybrid E-Vinylogous Lipopeptides
摘要:
Nonribosomal E-vinylogous gamma-amino acids are widely present in many peptide natural products and have been exploited as inhibitors for serine and cysteine proteases. Here, we are reporting the broad spectrum antimicrobial properties and self-assembled nanostructures of various hybrid lipopeptides composed of 1:1 alternating alpha-and E-vinylogous residues. Analysis of the results revealed that self-assembled nanostructures also play a significant role in the antimicrobial and hemolytic activities. In contrast to the alpha-peptide counterparts, vinylogous hybrid peptides displayed excellent antimicrobial properties against various bacterial and fungal strains. Peptides that adopted nanofiber structures displayed less hemolytic activity, while peptides that adopted nanoneedle structures displayed the highest hemolytic activity.
Synthesis of Gallinamide A Analogues as Potent Falcipain Inhibitors and Antimalarials
作者:Trent Conroy、Jin T. Guo、Nabiha Elias、Katie M. Cergol、Jiri Gut、Jennifer Legac、Lubna Khatoon、Yang Liu、Sheena McGowan、Philip J. Rosenthal、Nicholas H. Hunt、Richard J. Payne
DOI:10.1021/jm501439w
日期:2014.12.26
Analogues of the natural product gallinamide A were prepared to elucidate novel inhibitors of the falcipain cysteine proteases. Analogues exhibited potent inhibition of falcipain-2 (FP-2) and falcipain-3 (FP-3) and of the development of Plasmodium falciparum in vitro. Several compounds were equipotent to chloroquine as inhibitors of the 3D7 strain of P. falciparum and maintained potent activity against the chloroquine-resistant Dd2 parasite. These compounds serve as promising leads for the development of novel antimalarial agents.
Honore; Hjeds; Krogsgaard-Larsen, European Journal of Medicinal Chemistry, 1978, vol. 13, # 5, p. 429 - 434