Discovery of a Novel Non-Peptide Somatostatin Agonist with SST4 Selectivity
摘要:
The discovery of novel non-peptide compounds with a high affinity for the peptide hormone somatostatin (SST) receptor is described. The compounds were tested for affinity at five human SST receptor subtypes individually expressed in mammalian cells. The compound NNC 26-9100 showed a K-i of 6 nM at SST4 and more than 100 fold selectivity for SST4 over SST1, SST2, SST3, or SST5. Competition binding studies and Scatchard analysis of the interaction by NNC 26-9100 with SST showed specificity at SST4. Furthermore, NNC 26-9100 was highly selective for SST4 over a variety of other G protein-coupled receptors, having affinities for M-1 muscarinic acetylcholin and D-3 dopamine receptors of around 500 and 1000 nM, respectively. Finally, NNC 26-9100 was found to fully inhibit forskolin-induced accumulation of adenosine 3',5'-cyclic monophosphate in baby hamster kidney cells, expressing the human SST4 receptor with an EC50 of 2 nM.
Discovery of a Novel Non-Peptide Somatostatin Agonist with SST4 Selectivity
摘要:
The discovery of novel non-peptide compounds with a high affinity for the peptide hormone somatostatin (SST) receptor is described. The compounds were tested for affinity at five human SST receptor subtypes individually expressed in mammalian cells. The compound NNC 26-9100 showed a K-i of 6 nM at SST4 and more than 100 fold selectivity for SST4 over SST1, SST2, SST3, or SST5. Competition binding studies and Scatchard analysis of the interaction by NNC 26-9100 with SST showed specificity at SST4. Furthermore, NNC 26-9100 was highly selective for SST4 over a variety of other G protein-coupled receptors, having affinities for M-1 muscarinic acetylcholin and D-3 dopamine receptors of around 500 and 1000 nM, respectively. Finally, NNC 26-9100 was found to fully inhibit forskolin-induced accumulation of adenosine 3',5'-cyclic monophosphate in baby hamster kidney cells, expressing the human SST4 receptor with an EC50 of 2 nM.
The present invention relates to compounds, compositions containing them, and their use for treating medical disorders related to binding to human somatostatin receptor subtypes.
本发明涉及化合物、包含它们的组合物以及它们用于治疗与人类生长抑素受体亚型结合相关的医学疾病的用途。
Use of somatostatin agonists and antagonists for treating diseases
申请人:Novo Nordisk A/S
公开号:US06159941A1
公开(公告)日:2000-12-12
The invention relates to the use of a somatostatin receptor ligand of nonpeptide origin, e.g. of the general formula Ia or Ib ##STR1## or a pharmaceutically acceptable salt thereof, which has high and/or selective affinity to the somatostatin receptor protein designated SSTR4 and, for the preparation of a medicament for the treatment of a disease associated with an adverse condition in the retina and/or iris-ciliary body of a mammal. Such conditions are high intraocular pressure (IOP) and/or deep ocular infections. The diseases which may be treated are e.g. glaucoma, stromal keratitis, iritis, retinitis, cataract and conjunctivitis.
Nonpeptide Somatostatin Agonists with sst<sub>4</sub> Selectivity: Synthesis and Structure−Activity Relationships of Thioureas
作者:Shenquan Liu、Cheng Tang、Bin Ho、Michael Ankersen、Carsten E. Stidsen、A. Michael Crider
DOI:10.1021/jm980118e
日期:1998.11.1
Utilizing NNC 26-9100 (11) as a structural lead, a variety of nonpeptide derivatives of somatostatin were synthesized and evaluated for sst(2) and sst(4) receptor binding affinity. A novel thiourea scaffold was utilized to attach (1) a heteroaromatic nucleus to mimic the Trp(8) residue, (2) a nonheteroaromatic nucleus to mimic Phe(7), and (3) a primary amine or other basic group to mimic the Lys(9) residue of somatostatin. Displacement studies were carried out using membranes from cell lines expressing ssts [BHK cells (sst(4)) and HEK 293 cells (sst(2))] utilizing [I-125]Tyr(11)-SRIF as the radioligand. Several thioureas (11, 38, 39, 41, and 42) and the urea 66 exhibited K-i values of less than 100 nM. The thioureas 11 (K-i = 6 nM) and 41 (K-i = 16 nM) and the urea 66 (K-i = 14 nM) are believed to be the most potent nonpeptide sst(4) agonists known. Since the thiourea 11 and the urea 66 exhibit high ssts selectivity, these novel nonpeptide derivatives may be useful tools for studying the sst(4) receptor. Studies are currently in progress to evaluate the therapeutic potential of NNC 26-9100 (11) in the treatment of glaucoma.
USE OF SOMATOSTATIN AGONISTS AND ANTAGONISTS FOR TREATING DISEASES RELATED TO THE EYE