Optical manipulation of the alpha subunits of heterotrimeric G proteins using photoswitchable dimerization systems.

Optical manipulation of the alpha subunits of heterotrimeric G proteins using photoswitchable dimerization systems.
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DOI:
10.1038/srep35777
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发表时间:
2016-10-21
期刊:
影响因子:
4.6
通讯作者:
Sato M
Sato M
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Yu G;Onodera H;Aono Y;Kawano F;Ueda Y;Furuya A;Suzuki H;Sato M

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异源三聚体 G 蛋白 (Gα) 的 α 亚基参与多种细胞功能。在这里,我们报告了一种在活细胞中空间和时间上操纵 Gα 的光遗传学策略。更具体地说,我们应用蓝光诱导二聚化系统(称为 Magnet 系统)和另一种由拟南芥光敏色素 B (PhyB) 和光敏色素相互作用因子 6 (PIF6) 组成的红光诱导二聚化系统来光学控制两种不同类别的 Gα(Gαq 和 Gαs)的激活。通过利用这一策略,我们证明了在哺乳动物细胞中利用光成功调节 Ca2+ 和 cAMP。本策略通常适用于不同种类的 Gα,并有助于扩大哺乳动物细胞中 Gα 时空调节的可能性。
Alpha subunits of heterotrimeric G proteins (Gα) are involved in a variety of cellular functions. Here we report an optogenetic strategy to spatially and temporally manipulate Gα in living cells. More specifically, we applied the blue light-induced dimerization system, known as the Magnet system, and an alternative red light-induced dimerization system consisting of Arabidopsis thaliana phytochrome B (PhyB) and phytochrome-interacting factor 6 (PIF6) to optically control the activation of two different classes of Gα (Gαq and Gαs). By utilizing this strategy, we demonstrate successful regulation of Ca2+ and cAMP using light in mammalian cells. The present strategy is generally applicable to different kinds of Gα and could contribute to expanding possibilities of spatiotemporal regulation of Gα in mammalian cells.
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期刊: Science (New York, N.Y.)
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