P2Y isoforms operative in mouse taste cells

被引:26
作者
Bystrova, MF [1 ]
Yatzenko, YE [1 ]
Fedorov, IV [1 ]
Rogachevskaja, OA [1 ]
Kolesnikov, SS [1 ]
机构
[1] Russian Acad Sci, Int Cell Biophys, Pushchino 142290, Moscow Region, Russia
基金
俄罗斯基础研究基金会;
关键词
taste cells; P2Y receptors; intracellular Ca2+; reverse transcription/polymerase chain reaction; immunohistochemistry; mouse;
D O I
10.1007/s00441-005-0098-8
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
Recent functional evidence indicates that mouse taste cells express P2Y receptors coupled to IP3 production and Ca-2 mobilization. Our studies of the expression profile of particular P2Y isoforms in the taste tissue of the mouse have revealed that ATP and UTP equipotently mobilize intracellular Ca2+ at saturating concentrations, suggesting that common receptors for both nucleotides, i.e., P2Y(2) and P2Y(4) subtypes, might be involved. Reverse transcription/polymerase chain reaction and immunohistochemistry have confirmed the presence of P2Y(2) and P2Y(4) receptors in a population of taste bud cells from the circumvallate and foliate papillae. Transcripts for the P2Y(1) and P2Y(6) isoforms have also been detected in taste tissue preparations, this observation being consistent with the ADP and UDP responsiveness of taste cells. Together, our data suggest that P2Y(2) and P2Y(4) receptors play a predominant role in mediating taste cell responses to ATP and UTP.
引用
收藏
页码:377 / 382
页数:6
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