Guarise C, Shinde S, Kibler K, Ghirlanda G, Prins LJ, Scrimin P. A multivalent HIV-1 fusion inhibitor based on small helical foldamers.
Tetrahedron 2012;
68:4346-4352. [PMID:
32287423 PMCID:
PMC7125900 DOI:
10.1016/j.tet.2012.03.078]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2011] [Revised: 02/21/2012] [Accepted: 03/20/2012] [Indexed: 11/19/2022]
Abstract
The peptide sequence AcNH-TEG-Glu-Aib-Trp-AibAib-Trp-AibAib-Ile-Asp-OH (1), designed to display the WWI epitope found near the C-terminus of gp41, an envelope glycoprotein decorating the surface of the HIV-1 virus, has been synthesized and proved to have a relevant content of helical conformation because of the presence of five α-aminoisobutyric acid (Aib) units. Three copies of it have been connected to a tripodal platform based on 2,4,6-triethylbenzene-1,3,5-trimethylamine. The tripodal template 2 is even more structured than 1 thus suggesting a significant interaction between the three sequences connected to the platform. Preliminary inhibition assays of HIV-mediated cell fusion indicated that while the single peptide 1 is inactive within the concentration range of our assay, when it is conjugated to the tripodal platform, it is moderately active. These promising results suggest that our approach constitute a valid alternative to those reported so far.
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