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Pinkerton AB, Peddibhotla S, Yamamoto F, Slosky LM, Bai Y, Maloney P, Hershberger P, Hedrick MP, Falter B, Ardecky RJ, Smith LH, Chung TDY, Jackson MR, Caron MG, Barak LS. Discovery of β-Arrestin Biased, Orally Bioavailable, and CNS Penetrant Neurotensin Receptor 1 (NTR1) Allosteric Modulators. J Med Chem 2019; 62:8357-8363. [PMID: 31390201 PMCID: PMC7003992 DOI: 10.1021/acs.jmedchem.9b00340] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Neurotensin receptor 1 (NTR1) is a G protein coupled receptor that is widely expressed throughout the central nervous system where it acts as a neuromodulator. Neurotensin receptors have been implicated in a wide variety of CNS disorders, but despite extensive efforts to develop small molecule ligands there are few reports of such compounds. Herein we describe the optimization of a quinazoline based lead to give 18 (SBI-553), a potent and brain penetrant NTR1 allosteric modulator.
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Affiliation(s)
- Anthony B. Pinkerton
- Conrad Prebys Center for Chemical Genomics, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, United States
| | - Satyamaheshwar Peddibhotla
- Conrad Prebys Center for Chemical Genomics, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, United States
| | - Fusayo Yamamoto
- Conrad Prebys Center for Chemical Genomics, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, United States
| | - Lauren M. Slosky
- Duke University Medical Center, Durham, North Carolina 27709, United States
| | - Yushi Bai
- Duke University Medical Center, Durham, North Carolina 27709, United States
| | - Patrick Maloney
- Conrad Prebys Center for Chemical Genomics, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, United States
| | - Paul Hershberger
- Conrad Prebys Center for Chemical Genomics, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, United States
| | - Michael P. Hedrick
- Conrad Prebys Center for Chemical Genomics, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, United States
| | - Bekhi Falter
- Conrad Prebys Center for Chemical Genomics, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, United States
| | - Robert J. Ardecky
- Conrad Prebys Center for Chemical Genomics, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, United States
| | - Layton H. Smith
- Conrad Prebys Center for Chemical Genomics, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, United States
| | - Thomas D. Y. Chung
- Conrad Prebys Center for Chemical Genomics, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, United States
| | - Michael R. Jackson
- Conrad Prebys Center for Chemical Genomics, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, United States
| | - Marc G. Caron
- Duke University Medical Center, Durham, North Carolina 27709, United States
| | - Lawrence S. Barak
- Duke University Medical Center, Durham, North Carolina 27709, United States
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Falter B, Schepers S, Vrielinck L, Lambrichts I, Politis C. Predicted versus executed surgical orthognathic treatment. J Craniomaxillofac Surg 2013; 41:547-51. [DOI: 10.1016/j.jcms.2012.11.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Revised: 11/22/2012] [Accepted: 11/22/2012] [Indexed: 11/25/2022] Open
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Abstract
A new analytical procedure has been developed for the simultaneous determination of human hemoglobin adducts from aromatic amines and tobacco-specific nitrosamines. These tobacco-related hemoglobin adducts were determined in nonsmokers, smokers, and users of nasal snuff. Adducts from aminobiphenyl compounds are good biomarkers of exposure to tobacco smoke; they are not elevated in users of nasal snuff. However, a significant contribution of environmental exposure to aromatic amines and/or the corresponding nitroaromatics makes it difficult to evaluate passive exposure to tobacco smoke. The best biomarkers for exposure to tobacco smoke should in theory be adducts arising from tobacco-specific nitrosamines. The common adduct from N'-nitrosonornicotine and 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone releases 4-hydroxy-1-(3-pyridyl)-1-butanone from hemoglobin upon mild alkaline hydrolysis and only marginal differences are found in the adduct level in smokers and nonsmokers. The reason for this observation is not yet understood and is currently under investigation. However, the adduct formed by tobacco-specific nitrosamines is well suited for the detection of oral and nasal tobacco use. Only by simultaneous determination of both adducts formed by aromatic amines and tobacco-specific nitrosamines is it possible to differentiate between nonsmokers, smokers, and nasal snuff users.
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Affiliation(s)
- B Falter
- Walther Straub-Institut für Pharmakologie und Toxikologie, Ludwig-Maximilians-Universität München, Germany
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