Role of 2',6'-dimethyl-l-tyrosine (Dmt) in some opioid lead compounds.
Role of 2',6'-dimethyl-l-tyrosine (Dmt) in some opioid lead compounds.
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DOI:
10.1016/j.bmc.2010.06.073
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发表时间:
2010-08-15
影响因子:
3.5
通讯作者:
Salvadori, Severo
中科院分区:
文献类型:
--
作者:
Balboni, Gianfranco;Marzola, Erika;Sasaki, Yusuke;Ambo, Akihiro;Marczak, Ewa D.;Lazarus, Lawrence H.;Salvadori, Severo
关键词:
Here we evaluated how the interchange of the amino acids 2′,6′-dimethyl-L-tyrosine (Dmt), 2′,6′-difluoro-L-tyrosine (Dft), and tyrosine in position 1 can affect the pharmacological characterization of some reference opioid peptides and pseudopeptides. Generally, Dft and Tyr provide analogues with a similar pharmacological profile, despite different pKa values. Dmt/Tyr(Dft) replacement gives activity changes depending on the reference opioid in which the modification was made. Whereas, H-Dmt-Tic-Asp*-Bid is a potent and selective δ agonist (MVD, IC50 = 0.12 nM); H-Dft-Tic-Asp*-Bid and H-Tyr-Tic-Asp*-Bid are potent and selective δ antagonists (pA2 = 8.95 and 8.85, respectively). When these amino acids are employed in the synthesis of deltorphin B and its Dmt1 and Dft1 analogues, the three compounds maintain a very similar δ agonism (MVD, IC50 0.32–0.53 nM) with a decrease in selectivity relative to the Dmt1 analogue. In the less selective H-Dmt-Tic-Gly*-Bid the replacement of Dmt with Dft and Tyr retains the δ agonism but with a decrease in potency. Antagonists containing the Dmt-Tic pharmacophore do not support the exchange of Dmt with Dft or Tyr.
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影响因子:
5
作者:
Balboni, Gianfranco;Salvadori, Severo;Trapella, Claudio;Knapp, Brian I.;Bidlack, Jean M.;Lazarus, Lawrence H.;Peng, Xuemei;Neumeyer, John L.
通讯作者:
Neumeyer, John L.
影响因子:
7.3
作者:
Balboni, G;Salvadori, S;Lazarus, LH
通讯作者:
Lazarus, LH
影响因子:
7.3
作者:
Balboni, G;Guerrini, R;Lazarus, LH
通讯作者:
Lazarus, LH
影响因子:
7.3
作者:
Berezowska, Irena;Chung, Nga N.;Schiller, Peter W.
通讯作者:
Schiller, Peter W.
影响因子:
7.3
作者:
Balboni, Gianfranco;Trapella, Claudio;Salvadori, Severo
通讯作者:
Salvadori, Severo