Imaging intraorganellar Ca2+ at subcellular resolution using CEPIA.
Imaging intraorganellar Ca2+ at subcellular resolution using CEPIA.
复制标题
使用CEPIA在亚细胞分辨率下成像仪内CA2+。
DOI:
10.1038/ncomms5153
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发表时间:
2014-06-13
影响因子:
16.6
通讯作者:
Iino, Masamitsu
中科院分区:
文献类型:
--
作者:
Suzuki, Junji;Kanemaru, Kazunori;Ishii, Kuniaki;Ohkura, Masamichi;Okubo, Yohei;Iino, Masamitsu
The endoplasmic reticulum (ER) and mitochondria accumulate Ca2+ within their lumens to regulate numerous cell functions. However, determining the dynamics of intraorganellar Ca2+ has proven to be difficult. Here we describe a family of genetically encoded Ca2+ indicators, named calcium-measuring organelle-entrapped protein indicators (CEPIA), which can be utilized for intraorganellar Ca2+ imaging. CEPIA, which emit green, red or blue/green fluorescence, are engineered to bind Ca2+ at intraorganellar Ca2+ concentrations. They can be targeted to different organelles and may be used alongside other fluorescent molecular markers, expanding the range of cell functions that can be simultaneously analysed. The spatiotemporal resolution of CEPIA makes it possible to resolve Ca2+ import into individual mitochondria while simultaneously measuring ER and cytosolic Ca2+. We have used these imaging capabilities to reveal differential Ca2+ handling in individual mitochondria. CEPIA imaging is a useful new tool to further the understanding of organellar functions. The use of intracellular calcium sensors provides important information about the dynamics of calcium signalling in cells. Here Suzuki et al. develop organelle-targeted sensors to simultaneously measure calcium concentrations in ER and mitochondria, and uncover novel insights into calcium flux in mitochondria.
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影响因子:
11.4
作者:
Collins, TJ;Berridge, MJ;Bootman, MD
通讯作者:
Bootman, MD
DOI:
10.1073/pnas.0608358103
发表时间:
2006-11-07
影响因子:
11.1
作者:
Baba, Yoshihiro;Hayashit, Kenji;Kurosaki, Tomohiro
通讯作者:
Kurosaki, Tomohiro
影响因子:
4.8
作者:
Filippin, L;Magalhaes, PJ;Pozzan, T
通讯作者:
Pozzan, T
影响因子:
16
作者:
Csordás G;Várnai P;Golenár T;Roy S;Purkins G;Schneider TG;Balla T;Hajnóczky G
通讯作者:
Hajnóczky G
影响因子:
16
作者:
Giacomello, Marta;Drago, Ilaria;Pozzan, Tullio
通讯作者:
Pozzan, Tullio