Colocalization of GPR120 with phospholipase-Cbeta2 and alpha-gustducin in the taste bud cells in mice.
A recent study has demonstrated that the G-protein coupled receptor GPR120 is expressed in the taste bud cells in rats. In this study, we have identified the types of taste cell that express GPR120 in C57/BL6 mice. Double immunostaining for GPR120 and the markers of type II taste cells (phospholipase-Cbeta2 and alpha-gustducin) revealed that the majority of the GPR120-positive taste cells are type II taste cells. In contrast, it was observed that GPR120 was rarely colocalized with the marker of type III cells (neuronal cell adhesion molecule). These results suggested that GPR120 is mainly expressed in the type II taste cells and might function as a sensor for dietary fat.
Matsumura
Shigenobu
S
Laboratory of Nutrition Chemistry, Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Oiwakecho, Kitashirakawa, Sakyo-ku, Kyoto, 606-8502, Japan. sigenobu@kais.kyoto-u.ac.jp
Eguchi
Ai
A
Mizushige
Takafumi
T
Kitabayashi
Nobuhide
N
Tsuzuki
Satoshi
S
Inoue
Kazuo
K
Fushiki
Tohru
T
D000818:Animals; D015870:Gene Expression / Q000502:physiology; D051379:Mice; D008810:Mice, Inbred C57BL; D019006:Neural Cell Adhesion Molecules / Q000378:metabolism; D009474:Neurons / Q000145:classification / Q000378:metabolism*; D054799:Phospholipase C beta / Q000235:genetics / Q000378:metabolism*; D012333:RNA, Messenger / Q000378:metabolism; D043562:Receptors, G-Protein-Coupled / Q000235:genetics / Q000378:metabolism*; D013650:Taste Buds / Q000166:cytology*; D015293:Transducin / Q000235:genetics / Q000378:metabolism*
C498007:FFAR4 protein, mouse; D019006:Neural Cell Adhesion Molecules; D012333:RNA, Messenger; D043562:Receptors, G-Protein-Coupled; C075192:gustducin; D054799:Phospholipase C beta; C518037:Plcb2 protein, mouse; D015293:Transducin