bc034074m_si_001.pdf (64.61 kB)
Fully Detachable Molecular Umbrellas as Peptide Delivery Agents
journal contribution
posted on 2003-11-19, 00:00 authored by Bingwen Jing, Vaclav Janout, Steven L. RegenA persulfated molecular umbrella, derived from cholic acid and spermidine, has been covalently
attached to H-Tyr-d-Ala-Gly-Phe-d-Leu-OH (DADLE) by use of an o-dithiobenzyl carbamate linkage.
Treatment of the resulting conjugate (1) with glutathione in solution resulted in the liberation of the
free form of the peptide. Addition of 1 to glutathione-entrapped liposomes, prepared from 1-palmitoyl-2-oleyol-sn-glycero-3-phosphocholine (POPC), 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphatidylglycerol
(POPG), and cholesterol [POPC/POPG/cholesterol, 72/4/24 (mol/mol/mol)], resulted in the delivery of
DADLE into their aqueous interior.