A Prodrug Nanoparticle Approach for the Oral Delivery of a Hydrophilic Peptide, Leucine<sup>5</sup>-enkephalin, to the Brain
作者:Aikaterini Lalatsa、Vivian Lee、John P. Malkinson、Mire Zloh、Andreas G. Schätzlein、Ijeoma F. Uchegbu
DOI:10.1021/mp300009u
日期:2012.6.4
The oral use of neuropeptides to treat brain disease is currently not possible because of a combination of poor oral absorption, short plasma half-lives and the blood–brain barrier. Here we demonstrate a strategy for neuropeptide brain delivery via the (a) oral and (b) intravenous routes. The strategy is exemplified by a palmitic ester prodrug of the model drug leucine5-enkephalin, encapsulated within
Neurotensin(8–13) analogs as dual NTS1 and NTS2 receptor ligands with enhanced effects on a mouse model of Parkinson's disease
作者:Toni Kühl、Maya G. Georgieva、Harald Hübner、Maria Lazarova、Matthias Vogel、Bodo Haas、Martina I. Peeva、Aneliya A. Balacheva、Ivan P. Bogdanov、Luigi Milella、Maria Ponticelli、Tsvetomir Garev、Immacolata Faraone、Roumyana Detcheva、Borislav Minchev、Polina Petkova-Kirova、Lyubka Tancheva、Reni Kalfin、Atanas G. Atanasov、Liudmil Antonov、Tamara I. Pajpanova、Kiril Kirilov、Marcus Gastreich、Peter Gmeiner、Diana Imhof、Nikolay T. Tzvetkov
DOI:10.1016/j.ejmech.2023.115386
日期:2023.6
guided molecular modeling approach to predict the activity of NT(8–13) analogs by investigating the docking models of ligands designed for binding to the human NTS1 and NTS2 receptors. The importance of the residues at positions 8 and/or 9 for hNTS1 and hNTS2 receptor binding affinity was experimentally confirmed by radioligand binding assays. Further in vitro ADME profiling and in vivo studies revealed
Synthesis and Functionalization of Azetidine‐Containing Small Macrocyclic Peptides
作者:George J. Saunders、Sam A. Spring、Eleanor Jayawant、Ina Wilkening、Stefan Roesner、Guy J. Clarkson、Ann M. Dixon、Rebecca Notman、Michael Shipman
DOI:10.1002/chem.202400308
日期:——
Incorporation of a 3-aminoazetidine (3-AAz) into peptide backbones improves head-to-tail cyclizations compared to unmodified peptides. The azetidine nitrogen can be readily functionalized using substitution or click chemistry. Crystal structure analysis reveals that a 3-AAz modified cyclic tetrapeptide adopts an uncommon all-trans conformation. The 3-AAz provides stability to protease degradation compared
作者:Armin Arabanian、Mahdieh Mohammadnejad、Saeed Balalaie、Jürgen H. Gross
DOI:10.1016/j.bmcl.2008.11.111
日期:2009.2
An efficient method for the synthesis of some Gn-RH analogues based on Ugi reaction has been developed. Four-component reaction of N- and C-terminus peptides, aromatic aldehydes and isocyanides affords novel Gn-RH analogues derived from triptorelin and gonadorelin. All of the products were purified using preparative HPLC and the structures were assigned according to MALDI-mass spectrometry data. Crown Copyright (C) 2008 Published by Elsevier Ltd. All rights reserved.