The ability to detect, and the innate liking for, sweet-tasting compounds presumably arose in animals to insure an adequate intake of calories and other nutrients. However, excess consumption of some sweet substances by humans has been implicated in a number of health disorders. The mechanisms by which sweeteners are detected and their intake regulated remain unclear although much progress has recently been made. In this project, primarily employing the inbred mouse as a model system, we use behavioral, physiological and molecular biological techniques to further our understanding of factors regulating sweetener perception and ingestion. Recently, we fine-mapped one genetic locus, Sac, to a small region of mouse distal chromosome 4 where we and other investigators have now identified a gene that codes for a sweet receptor. Yet a number of lines of evidence indicate that other genes that may specify additional receptors, transductive elements or central nervous system structures must be involved in determining sweet taste perception, preference and intake. During the project period, we will use a number of tools, some of them newly available, to locate and eventually identify novel genes important in regulating perception and intake of sweeteners. The results of this work will further understanding of sweetness perception, the sense of taste, and sensory biology.
| Sukumaran, Sunil K; Lewandowski, Brian C; Qin, Yumei et al. (2017) Whole transcriptome profiling of taste bud cells. Sci Rep 7:7595 |
| Lewandowski, Brian C; Sukumaran, Sunil K; Margolskee, Robert F et al. (2016) Amiloride-Insensitive Salt Taste Is Mediated by Two Populations of Type III Taste Cells with Distinct Transduction Mechanisms. J Neurosci 36:1942-53 |
| Bachmanov, Alexander A; Bosak, Natalia P; Glendinning, John I et al. (2016) Genetics of Amino Acid Taste and Appetite. Adv Nutr 7:806S-22S |
| Beauchamp, Gary K (2016) Why do we like sweet taste: A bitter tale? Physiol Behav 164:432-437 |
| Feng, Pu; Jyotaki, Masafumi; Kim, Agnes et al. (2015) Regulation of bitter taste responses by tumor necrosis factor. Brain Behav Immun 49:32-42 |
| Lin, Cailu; Fesi, Brad D; Marquis, Michael et al. (2015) Body Composition QTLs Identified in Intercross Populations Are Reproducible in Consomic Mouse Strains. PLoS One 10:e0141494 |
| Murovets, Vladimir O; Bachmanov, Alexander A; Zolotarev, Vasiliy A (2015) Impaired Glucose Metabolism in Mice Lacking the Tas1r3 Taste Receptor Gene. PLoS One 10:e0130997 |
| Bachmanov, Alexander A; Bosak, Natalia P; Lin, Cailu et al. (2014) Genetics of taste receptors. Curr Pharm Des 20:2669-83 |
| Murovets, V O; Bachmanov, A A; Travnikov, S V et al. (2014) The Involvement of the T1R3 Receptor Protein in the Control of Glucose Metabolism in Mice at Different Levels of Glycemia. J Evol Biochem Physiol 50:334-344 |
| Ren, Wenwen; Lewandowski, Brian C; Watson, Jaime et al. (2014) Single Lgr5- or Lgr6-expressing taste stem/progenitor cells generate taste bud cells ex vivo. Proc Natl Acad Sci U S A 111:16401-6 |
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