Neuropeptide S (NPS) regulates various biological functions by activating the NPS receptor (NPSR). Previous studies demonstrated that the substitution of Gly(5) with d-amino acids generates NPSR antagonists. Eleven [d-Xaa(5)]NPS derivatives were synthesized and pharmacologically tested measuring [Ca(2+)](i) in HEK293(mNPSR) cells. The results confirmed that the [d-Xaa(5)] substitution promotes antagonist activity with potency inversely related to the side chain size and allowed identification of the novel potent NPSR peptide antagonist [(t)Bu-d-Gly(5)]NPS.
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Data di pubblicazione: | 2009 | |
Titolo: | Further studies at neuropeptide s position 5: discovery of novel neuropeptide S receptor antagonists. | |
Autori: | Guerrini R; Camarda V; Trapella C; Caló G; Rizzi A; Ruzza C; Fiorini S; Marzola E; Reinscheid RK; Regoli D; Salvadori S. | |
Rivista: | JOURNAL OF MEDICINAL CHEMISTRY | |
Abstract: | Neuropeptide S (NPS) regulates various biological functions by activating the NPS receptor (NPSR). Previous studies demonstrated that the substitution of Gly(5) with d-amino acids generates NPSR antagonists. Eleven [d-Xaa(5)]NPS derivatives were synthesized and pharmacologically tested measuring [Ca(2+)](i) in HEK293(mNPSR) cells. The results confirmed that the [d-Xaa(5)] substitution promotes antagonist activity with potency inversely related to the side chain size and allowed identification of the novel potent NPSR peptide antagonist [(t)Bu-d-Gly(5)]NPS. | |
Digital Object Identifier (DOI): | 10.1021/jm900604g | |
Handle: | http://hdl.handle.net/11392/536230 | |
Appare nelle tipologie: | 03.1 Articolo su rivista |