cAMPr: A single-wavelength fluorescent sensor for cyclic AMP.

cAMPr: A single-wavelength fluorescent sensor for cyclic AMP.
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DOI:
10.1126/scisignal.aah3738
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发表时间:
2018-03-06
期刊:
影响因子:
7.3
通讯作者:
Blau J
Blau J
中科院分区:
生物学1区
文献类型:
--
作者:
Hackley CR;Mazzoni EO;Blau J

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基因编码荧光传感器能够实时测量细胞特异性离子和小分子。环腺苷一磷酸(cAMP)是几乎所有细胞类型和生物体中最重要的信号分子之一。在这里,我们描述cAMPr,一种新的单波长cAMP传感器。我们在细菌和胚胎干细胞中开发了cAMPr,并在体外哺乳动物神经元和完整大脑中的果蝇昼夜节律起搏器神经元中验证了该传感器。与其他单波长cAMP传感器的比较表明,cAMPr提供了更好的cAMP丰度定量检测。此外,cAMPr兼容单光子和双光子成像。这使我们能够将cAMPr与红色荧光Ca2+传感器RCaMP1h一起使用,同时监测果蝇大脑中的Ca2+和cAMP。因此,cAMPr是一种新的、通用的基因编码cAMP传感器。
Genetically encoded fluorescent sensors enable cell-specific measurements of ions and small molecules in real time. Cyclic adenosine monophosphate (cAMP) is one of the most important signaling molecules in virtually all cell types and organisms. Here, we describe cAMPr, a new single-wavelength cAMP sensor. We developed cAMPr in bacteria and embryonic stem cells and validated the sensor in mammalian neurons in vitro and in Drosophila circadian pacemaker neurons in intact brains. Comparison with other single-wavelength cAMP sensors showed that cAMPr provided improved quantitative detection of cAMP abundance. In addition, cAMPr is compatible with both single-photon and two-photon imaging. This enabled us to use cAMPr together with the red fluorescent Ca2+ sensor RCaMP1h to simultaneously monitor Ca2+ and cAMP in Drosophila brains. Thus, cAMPr is a new and versatile genetically encoded cAMP sensor.
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