--- _id: '2630' abstract: - lang: eng text: Taste-metabotropic glutamate receptor 4 (taste-mGluR4) and the heteromers of T1R1 and T1R3 are candidate receptors involved in the sense of umami (monosodium glutamate) taste. Although the expression of group III mGluRs (taste-mGluR4) has been demonstrated in taste tissues, no mention has been made of the expression of group I mGluRs (mGluR1 and mGluR5) in taste tissues. We examined the expression of mGluR1 and mGluR5 in rat gustatory tissues by using reverse transcription-polymerase chain reaction (RT-PCR), in situ hybridization, immunohistochemistry and immunoelectron microscopy. RT-PCR assay showed that mGluR1α and mGluR1β mRNAs were expressed in circumvallate papillae, but mGluR5 mRNA was not expressed. The positive signals of mGluR1 mRNA were detected only in circumvallate taste buds by in situ hybridization analysis. In cryosections of fungiform, foliate and circumvallate papillae, the antibody against mGluRla gave intense labeling on the taste hairs in all taste pores examined. In the developing taste buds, the positive signals of mGluR1α in taste hairs gradually increased with the increase in number of taste bud cells. These results show that, in addition to taste-mGluR4 and the heteromer of T1R1 and T1R3, mGluR1α may function as a receptor for glutamate (umami) taste sensation. author: - first_name: Takashi full_name: Toyono, Takashi last_name: Toyono - first_name: Yuji full_name: Seta, Yuji last_name: Seta - first_name: Shinji full_name: Kataoka, Shinji last_name: Kataoka - first_name: Shintaro full_name: Kawano, Shintaro last_name: Kawano - first_name: Ryuichi full_name: Ryuichi Shigemoto id: 499F3ABC-F248-11E8-B48F-1D18A9856A87 last_name: Shigemoto orcid: 0000-0001-8761-9444 - first_name: Kuniaki full_name: Toyoshima, Kuniaki last_name: Toyoshima citation: ama: Toyono T, Seta Y, Kataoka S, Kawano S, Shigemoto R, Toyoshima K. Expression of metabotropic glutamate receptor group I in rat gustatory papillae. Cell and Tissue Research. 2003;313(1):29-35. doi:10.1007/s00441-003-0740-2 apa: Toyono, T., Seta, Y., Kataoka, S., Kawano, S., Shigemoto, R., & Toyoshima, K. (2003). Expression of metabotropic glutamate receptor group I in rat gustatory papillae. Cell and Tissue Research. Springer. https://doi.org/10.1007/s00441-003-0740-2 chicago: Toyono, Takashi, Yuji Seta, Shinji Kataoka, Shintaro Kawano, Ryuichi Shigemoto, and Kuniaki Toyoshima. “Expression of Metabotropic Glutamate Receptor Group I in Rat Gustatory Papillae.” Cell and Tissue Research. Springer, 2003. https://doi.org/10.1007/s00441-003-0740-2. ieee: T. Toyono, Y. Seta, S. Kataoka, S. Kawano, R. Shigemoto, and K. Toyoshima, “Expression of metabotropic glutamate receptor group I in rat gustatory papillae,” Cell and Tissue Research, vol. 313, no. 1. Springer, pp. 29–35, 2003. ista: Toyono T, Seta Y, Kataoka S, Kawano S, Shigemoto R, Toyoshima K. 2003. Expression of metabotropic glutamate receptor group I in rat gustatory papillae. Cell and Tissue Research. 313(1), 29–35. mla: Toyono, Takashi, et al. “Expression of Metabotropic Glutamate Receptor Group I in Rat Gustatory Papillae.” Cell and Tissue Research, vol. 313, no. 1, Springer, 2003, pp. 29–35, doi:10.1007/s00441-003-0740-2. short: T. Toyono, Y. Seta, S. Kataoka, S. Kawano, R. Shigemoto, K. Toyoshima, Cell and Tissue Research 313 (2003) 29–35. date_created: 2018-12-11T11:58:46Z date_published: 2003-07-01T00:00:00Z date_updated: 2021-01-12T06:58:41Z day: '01' doi: 10.1007/s00441-003-0740-2 extern: 1 intvolume: ' 313' issue: '1' month: '07' page: 29 - 35 publication: Cell and Tissue Research publication_status: published publisher: Springer publist_id: '4267' quality_controlled: 0 status: public title: Expression of metabotropic glutamate receptor group I in rat gustatory papillae type: journal_article volume: 313 year: '2003' ...