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- W2028049056 abstract "Human bitter taste is mediated by the hTAS2R family of G protein-coupled receptors [1Adler E. Hoon M.A. Mueller K.L. Chandrashekar J. Ryba N.J.P. Zuker C.S. A novel family of mammalian taste receptors.Cell. 2000; 100: 693-702Abstract Full Text Full Text PDF PubMed Scopus (972) Google Scholar, 2Bufe B. Hofmann T. Krautwurst D. Raguse J.-D. Meyerhof W. The human TAS2R16 receptor mediates bitter taste in response to β-glucopyranosides.Nat. Genet. 2002; 32: 397-401Crossref PubMed Scopus (324) Google Scholar, 3Chandrashekar J. Mueller K.L. Hoon M.A. Adler E. Feng L. Guo W. Zuker C.S. Ryba N.J. T2Rs function as bitter taste receptors.Cell. 2000; 100: 703-711Abstract Full Text Full Text PDF PubMed Scopus (1012) Google Scholar, 4Matsunami H. Montmayeur J.P. Buck L.B. A family of candidate taste receptors in human and mouse.Nature. 2000; 404: 601-604Crossref PubMed Scopus (541) Google Scholar]. The discovery of the hTAS2Rs enables the potential to develop specific bitter receptor antagonists that could be beneficial as chemical probes to examine the role of bitter receptor function in gustatory and nongustatory tissues. In addition, they could have widespread utility in food and beverages fortified with vitamins, antioxidants, and other nutraceuticals, because many of these have unwanted bitter aftertastes. We employed a high-throughput screening approach to discover a novel bitter receptor antagonist (GIV3727) that inhibits activation of hTAS2R31 (formerly hTAS2R44) by saccharin and acesulfame K, two common artificial sweeteners. Pharmacological analyses revealed that GIV3727 likely acts as an orthosteric, insurmountable antagonist of hTAS2R31. Surprisingly, we also found that this compound could inhibit five additional hTAS2Rs, including the closely related receptor hTAS2R43. Molecular modeling and site-directed mutagenesis studies suggest that two residues in helix 7 are important for antagonist activity in hTAS2R31 and hTAS2R43. In human sensory trials, GIV3727 significantly reduced the bitterness associated with the two sulfonamide sweeteners, indicating that hTAS2R antagonists are active in vivo. Our results demonstrate that small molecule bitter receptor antagonists can effectively reduce the bitter taste qualities of foods, beverages, and pharmaceuticals." @default.
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- W2028049056 date "2010-06-01" @default.
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- W2028049056 title "Modulation of Bitter Taste Perception by a Small Molecule hTAS2R Antagonist" @default.
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- W2028049056 doi "https://doi.org/10.1016/j.cub.2010.04.043" @default.
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