Purinergic Signalling | |
2′, 3′-O-(4-benzoylbenzoyl)–ATP-mediated calcium signaling in rat glioma C6 cells: role of the P2Y2 nucleotide receptor | |
Dorota Supłat-Wypych1  Anna Dygas1  Jolanta Barańska1  | |
[1] Polish Academy of Sciences$$ | |
关键词: Glioma C6; | |
DOI : 10.1007/s11302-010-9194-7 | |
学科分类:分子生物学,细胞生物学和基因 | |
来源: Springer | |
【 摘 要 】
In this study, we examined the response of glioma C6 cells to 2′,3′-O-(4-benzoylbenzoyl)-ATP (BzATP) and showed that the BzATP-induced calcium signaling does not involve the P2X7 receptor activity. We show here that in the absence of extracellular Ca2+, BzATP-generated increase in [Ca2+]ivia Ca2+ release from intracellular stores. In the presence of calcium ions, BzATP established a biphasic Ca2+ response, in a manner typical for P2Y receptors. Brilliant Blue G, a selective antagonist of the rat P2X7 receptor, did not reduce any of the two components of the Ca2+ response elicited by BzATP. Periodate-oxidized ATP blocked not only BzATP- but also UTP-induced Ca2+ elevation. Moreover, BzATP did not open large transmembrane pores. What is more, a cross-desensitization between UTP and BzATP occurred, which clearly shows that in glioma C6 cells BzATP activates most likely the P2Y2 but not the P2X7 receptors.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201912040490074ZK.pdf | 96KB | download |