期刊
PEPTIDES
卷 30, 期 10, 页码 1833-1839出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.peptides.2009.07.015
关键词
Neurotrophin; Receptor; Tyrosine kinase; Antagonism
资金
- Canadian Institutes of Health Research
- National Institutes of Health [MH070040, GM076261]
- National Science Foundation [DBI-9970232]
- Texas A&M University System
Neurotrophins are a family of growth factors that regulate the peripheral and central nervous system. We designed and tested a mini-library of small molecules peptidomimetics based on beta-turns of the neurotrophin growth factor polypeptides NT-3, which is the natural ligand for TrkC receptors. Biological studies identified a peptidomimetic 2Cl that exhibited selective antagonism of TrkC. 2Cl reduces TrkC activation and signaling promoted by NT-3, and selectively blocks ligand-dependent cell survival. 2Cl also blocks ligand-independent TrkC activation and signals that take place when the receptor is over-expressed. This work adds to our understanding of how the neurotrophins function through Trk receptors, and demonstrates that peptidomimetics can be designed to selectively disturb neurotrophin-receptor interactions, and receptor activation. (C) 2009 Elsevier Inc. All rights reserved.
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