Engineering a polarity-sensitive biosensor for time-lapse imaging of apoptotic processes and degeneration.
Engineering a polarity-sensitive biosensor for time-lapse imaging of apoptotic processes and degeneration.
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DOI:
10.1038/nmeth.1405
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发表时间:
2010-01
期刊:
影响因子:
48
通讯作者:
Langen, Ralf
中科院分区:
文献类型:
--
作者:
Kim, Yujin E.;Chen, Jeannie;Chan, Jonah R.;Langen, Ralf
Apoptosis is of central importance to many areas of biological research, but there is a lack of methods that permit continuous monitoring of apoptosis or cell viability in a nontoxic and noninvasive manner. Here we report the development of a tool applicable to live-cell imaging that facilitates the visualization of real-time apoptotic changes without perturbing the cellular environment. We designed a polarity-sensitive annexin-based biosensor (pSIVA) with switchable fluorescence states, which allows detection only when bound to apoptotic cells. Using pSIVA with live-cell imaging, we observed dynamic local changes in individual rat neurons during degeneration in vitro and in vivo. Furthermore, we observed that pSIVA binding was reversible and clearly defined the critical period for neurons to be rescued. We anticipate pSIVA can be widely applied to address questions concerning spatiotemporal events in apoptotic processes, its reversibility and the general viability of cells in culture.
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影响因子:
2.9
作者:
Mailliard, WS;Luecke, H;Haigler, HT
通讯作者:
Haigler, HT
影响因子:
4.8
作者:
Mirnikjoo, Banafsheh;Balasubramanian, Krishnakumar;Schroit, Alan J.
通讯作者:
Schroit, Alan J.
影响因子:
64.8
作者:
LUECKE, H;CHANG, BT;HAIGLER, HT
通讯作者:
HAIGLER, HT
DOI:
10.1083/jcb.119.3.493
发表时间:
1992-11
期刊:
The Journal of cell biology
影响因子:
--
作者:
Gavrieli Y;Sherman Y;Ben-Sasson SA
通讯作者:
Ben-Sasson SA
影响因子:
2.9
作者:
Isas, JM;Kim, YE;Langen, R
通讯作者:
Langen, R