{"doi":"10.1523/jneurosci.1863-07.2007","title":"Breadth of Tuning and Taste Coding in Mammalian Taste Buds","abstract":"<jats:p>A longstanding question in taste research concerns taste coding and, in particular, how broadly are individual taste bud cells tuned to taste qualities (sweet, bitter, umami, salty, and sour). Taste bud cells express G-protein-coupled receptors for sweet, bitter, or umami tastes but not in combination. However, responses to multiple taste qualities have been recorded in individual taste cells. We and others have shown previously there are two classes of taste bud cells directly involved in gustatory signaling: “receptor” (type II) cells that detect and transduce sweet, bitter, and umami compounds, and “presynaptic” (type III) cells. We hypothesize that receptor cells transmit their signals to presynaptic cells. This communication between taste cells could represent a potential convergence of taste information in the taste bud, resulting in taste cells that would respond broadly to multiple taste stimuli. We tested this hypothesis using calcium imaging in a lingual slice preparation. Here, we show that receptor cells are indeed narrowly tuned: 82% responded to only one taste stimulus. In contrast, presynaptic cells are broadly tuned: 83% responded to two or more different taste qualities. Receptor cells responded to bitter, sweet, or umami stimuli but rarely to sour or salty stimuli. Presynaptic cells responded to all taste qualities, including sour and salty. These data further elaborate functional differences between receptor cells and presynaptic cells, provide strong evidence for communication within the taste bud, and resolve the paradox of broad taste cell tuning despite mutually exclusive receptor expression.</jats:p>","journal":"The Journal of Neuroscience","year":2007,"id":685827,"datarank":0.8257997303898545,"base_score":5.5053315359323625,"endowment":5.5053315359323625,"self_citation_contribution":0.8257997303898545,"citation_network_contribution":0.0,"self_endowment_contribution":0.8257997303898545,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":245,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":105203,"name":"Stephanie Berg","orcid":"0000-0001-6193-5350","position":1,"is_corresponding":false},{"id":1791813,"name":"Joung Woul Kim","orcid":null,"position":2,"is_corresponding":false},{"id":672622,"name":"Nirupa Chaudhari","orcid":"0000-0002-3883-5893","position":3,"is_corresponding":false},{"id":672621,"name":"Stephen D. Roper","orcid":"0000-0001-6049-8320","position":4,"is_corresponding":false},{"id":362485,"name":"Seth M. Tomchik","orcid":"0000-0001-5686-0833","position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Breadth of Tuning and Taste Coding in Mammalian Taste Buds","abstract":"<jats:p>A longstanding question in taste research concerns taste coding and, in particular, how broadly are individual taste bud cells tuned to taste qualities (sweet, bitter, umami, salty, and sour). Taste bud cells express G-protein-coupled receptors for sweet, bitter, or umami tastes but not in combination. However, responses to multiple taste qualities have been recorded in individual taste cells. We and others have shown previously there are two classes of taste bud cells directly involved in gustatory signaling: “receptor” (type II) cells that detect and transduce sweet, bitter, and umami compounds, and “presynaptic” (type III) cells. We hypothesize that receptor cells transmit their signals to presynaptic cells. This communication between taste cells could represent a potential convergence of taste information in the taste bud, resulting in taste cells that would respond broadly to multiple taste stimuli. We tested this hypothesis using calcium imaging in a lingual slice preparation. Here, we show that receptor cells are indeed narrowly tuned: 82% responded to only one taste stimulus. In contrast, presynaptic cells are broadly tuned: 83% responded to two or more different taste qualities. Receptor cells responded to bitter, sweet, or umami stimuli but rarely to sour or salty stimuli. Presynaptic cells responded to all taste qualities, including sour and salty. These data further elaborate functional differences between receptor cells and presynaptic cells, provide strong evidence for communication within the taste bud, and resolve the paradox of broad taste cell tuning despite mutually exclusive receptor expression.</jats:p>","is_dataset_classified":null,"base_score":5.5053315359323625,"endowment":5.5053315359323625,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"17913917","pmcid":"PMC3717408","openalex_id":"https://openalex.org/W2072112596","authors":[],"funders":[{"funder_name":"NIDCD NIH HHS","grant_id":"R01DC007630","title":null},{"funder_name":"NIDCD NIH HHS","grant_id":"R01DC000374","title":null},{"funder_name":"NIDCD NIH HHS","grant_id":"R01DC006308","title":null},{"funder_name":"NINDS NIH HHS","grant_id":"T32 NS007044","title":null}],"total_grants":4,"fwci":12.7569,"citation_percentile":0.99232951,"influential_citations":0,"citation_trend":[{"year":2012,"count":15},{"year":2013,"count":7},{"year":2014,"count":15},{"year":2015,"count":11},{"year":2016,"count":10},{"year":2017,"count":11},{"year":2018,"count":12},{"year":2019,"count":12},{"year":2020,"count":16},{"year":2021,"count":22},{"year":2022,"count":7},{"year":2023,"count":7},{"year":2024,"count":8},{"year":2025,"count":7},{"year":2026,"count":3}],"oa_status":"bronze","license":"https://creativecommons.org/licenses/by-nc-sa/4.0/","oa_locations":[{"url":"https://www.jneurosci.org/content/jneuro/27/40/10840.full.pdf","host_type":"journal"},{"url":"https://www.jneurosci.org/content/jneuro/27/40/10840.full.pdf","host_type":"publisher"},{"url":"https://syndication.highwire.org/content/doi/10.1523/JNEUROSCI.1863-07.2007","host_type":"publisher"},{"url":"https://doi.org/10.1523/jneurosci.1863-07.2007","host_type":"journal"},{"url":"https://pubmed.ncbi.nlm.nih.gov/17913917","host_type":"repository"},{"url":"http://europepmc.org/articles/PMC3717408","host_type":"repository"},{"url":"https://www.ncbi.nlm.nih.gov/pmc/articles/3717408","host_type":"repository"}],"fields_of_study":["Biochemical Analysis and Sensing Techniques","Olfactory and Sensory Function Studies","Advanced Chemical Sensor Technologies","Animals","Glutamate Decarboxylase","Green Fluorescent Proteins","In Vitro Techniques","Mice","Mice, Inbred C57BL","Mice, Transgenic","Neurons, Afferent","Phospholipase C beta","Potassium Chloride","Presynaptic Terminals","Serotonin","Sweetening Agents","Synaptosomal-Associated Protein 25","Taste","Taste Buds"],"mesh_terms":["Animals","Glutamate Decarboxylase","Mice, Inbred C57BL","Mice, Transgenic","Neurons, Afferent","Potassium Chloride","Serotonin","Sweetening Agents","Taste","Taste Buds","Presynaptic Terminals","Green Fluorescent Proteins","Synaptosomal-Associated Protein 25","Mice","Phospholipase C beta","In Vitro Techniques"],"keywords":["Umami","Taste bud","Taste","Aftertaste","Taste receptor","Stimulus (psychology)","Receptor","Bitter taste","Biology","Neuroscience","Cell biology","Psychology","Biochemistry","Cognitive psychology"],"sdg_mappings":[],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-08-18T17:46:07.578130Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}