Screening of novel ion channels for sour and salty taste
Project/Area Number |
26660108
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Food science
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Research Institution | The University of Tokyo |
Principal Investigator |
ISHIMARU YOSHIRO 東京大学, 農学生命科学研究科, 特任准教授 (10451840)
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Project Period (FY) |
2014-04-01 – 2016-03-31
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Project Status |
Completed (Fiscal Year 2015)
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Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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Keywords | 味覚受容体 / イオンチャネル / 遺伝子発現解析 / RNA-Seq法 / in situ hybridization法 |
Outline of Final Research Achievements |
We carried out screening of novel ion channels for salty taste using RNA-Seq method and the transcription factor Skn-1-deficient mice. As a result, we found that gene X is specifically expressed in taste receptor cells of circumavallate and foliate papillae. Electrophysiological analysis using HEK293T cells revealed that X forms a chloride channel. Finally, X-decifient mice showed reduced glossopharyngeal nerve and aversive lick responses to high concentration (>100 mM) of NaCl. Taken together, these results demonstrate that gene X may be involved in the detection of chloride anion in food.
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Report
(3 results)
Research Products
(18 results)
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[Journal Article] Expression of serotonin receptor genes in cranial ganglia.2016
Author(s)
Maeda, N., Ohmoto, M., Yamamoto, K., Kurokawa, A., Narukawa, M., Ishimaru, Y., Misaka, T., Matsumoto, I., Abe, K.
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Journal Title
Neurosci Lett
Volume: 617
Pages: 46-51
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Long-Chain Fatty Acids Elicit a Bitterness-Masking Effect on Quinine and Other Nitrogenous Bitter Substances by Formation of Insoluble Binary Complexes.2015
Author(s)
Ogi, K., Yamashita, H., Terada, T., Homma, R., Shimizu-Ibuka, A., Yoshimura, E., Ishimaru, Y., Abe, K., and Asakura, T.
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Journal Title
J. Agric. Food Chem.
Volume: 63
Issue: 38
Pages: 8493-8500
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] Rapid Expansion of Phenylthiocarbamide Non-Tasters among Japanese Macaques.2015
Author(s)
Suzuki-Hashido, N., Hayakawa, T., Matsui, A., Go, Y., Ishimaru, Y., Misaka, T., Abe, K., Hirai, H., Satta, Y., and Imai, H.
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Journal Title
PLoS ONE
Volume: 22
Issue: 7
Pages: e0132016-e0132016
DOI
NAID
Related Report
Peer Reviewed / Open Access
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[Journal Article] Additional nitrogen fertilization at heading time of rice down-regulates cellulose synthesis in seed endosperm.2014
Author(s)
Midorikawa, K., Kuroda, M., Terauchi, K., Hoshi, M., Ikenaga, S., Ishimaru, Y., Abe, K., Asakura, T.
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Journal Title
PLoS One
Volume: 9
Issue: 6
Pages: e98738-e98738
DOI
Related Report
Peer Reviewed / Open Access
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[Presentation] Loss of brush cells and taste cells in the gastrointestinal tract alters energy metabolism in Skn-1-deficient mice.2015
Author(s)
Ishimaru, Y., Ushiama, S., Narukawa, M., Yoshioka, M., Kozuka, C., Watanabe, N., Osakabe, N., Asakura, T., Masuzaki, H., Abe, K.
Organizer
ECRO 2015
Place of Presentation
Istanbul, Turky
Year and Date
2015-09-02
Related Report
Int'l Joint Research
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