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.
复制标题

DOI:
10.1038/nmeth.1405
复制
发表时间:
2010-01
期刊:
影响因子:
48
通讯作者:
Langen, Ralf
Langen, Ralf
中科院分区:
生物学1区
文献类型:
--
作者:
Kim, Yujin E.;Chen, Jeannie;Chan, Jonah R.;Langen, Ralf

文献摘要

参考文献

被引文献

相似文献

细胞凋亡对生物学研究的许多领域具有重要意义,但目前尚缺乏能够以无毒和非侵入性的方式持续监测细胞凋亡或细胞活性的方法。在这里,我们报告了一种适用于活细胞成像的工具的开发,该工具有助于在不干扰细胞环境的情况下实时可视化细胞凋亡的变化。我们设计了一种极性敏感的基于膜联蛋白的生物传感器(PSIVA),它具有可切换的荧光状态,只有在与凋亡细胞结合时才能进行检测。利用pSIVA结合活体细胞成像,我们观察了单个大鼠神经元在体外和体内变性过程中局部的动态变化。此外,我们观察到pSIVA结合是可逆的,并明确定义了神经元被拯救的临界期。我们预计pSIVA可以广泛应用于解决有关细胞凋亡过程中的时空事件、其可逆性以及培养细胞的一般生存能力等问题。
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.
DOI: 10.1021/bi970749v
发表时间: 1997-07-22
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
Mailliard, WS;Luecke, H;Haigler, HT
通讯作者: Haigler, HT
DOI: 10.1074/jbc.m805288200
发表时间: 2009-03-13
影响因子: 4.8
作者:
Mirnikjoo, Banafsheh;Balasubramanian, Krishnakumar;Schroit, Alan J.
通讯作者: Schroit, Alan J.
DOI: 10.1038/378512a0
发表时间: 1995-11-30
期刊: NATURE
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
DOI: 10.1021/bi051751m
发表时间: 2005-12-20
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
Isas, JM;Kim, YE;Langen, R
通讯作者: Langen, R