Imaging of corticosteroid receptors in live cells.

Imaging of corticosteroid receptors in live cells.
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活细胞中皮质类固醇受体的成像。

DOI:
10.1007/978-1-4939-1346-6_18
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发表时间:
2014
期刊:
Methods Mol Biol
影响因子:
--
通讯作者:
Nishi M
Nishi M
中科院分区:
--
文献类型:
--
作者:
Nishi M;Horii-Hayashi N;Sasagawa T;Nishi M

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相似文献

肾上腺皮质类固醇(人类中的皮质醇或啮齿动物中的皮质酮)对中枢神经系统产生大量影响,调节应激反应、情绪、学习和记忆以及各种神经内分泌功能。皮质酮(Cort)在大脑中的作用通过两个受体系统介导:盐皮质激素受体(MR)和糖皮质激素受体(GR)。已有研究表明MR和GR在海马区高度共定位。这些受体主要定位于细胞质,与激素结合后移位到细胞核内,发挥转录因子的作用。因此,这两种受体的亚细胞动力学构成了需要澄清的最重要的问题之一。鉴于MR和GR在中枢神经系统中的不同作用,阐明MR和GR如何在细胞质和细胞核之间运输,以及激素和/或其他分子如何调节它们的相互作用以发挥其功能活性具有重要意义。在这一章中,我们描述了我们最近对活细胞中皮质类固醇受体动力学的研究,主要集中在三点:(1)绿色荧光蛋白(GFP)标记的皮质类固醇受体的时移成像;(2)利用光漂白后的荧光恢复技术对GFP标记的皮质类固醇受体的核内动力学;以及(3)利用荧光共振能量转移技术形成异二聚体的可能性。我们讨论了影响这些受体动力学的各种因素。此外,我们提出了在整个大脑水平上皮质类固醇受体的活体分子成像的未来方向。
Adrenal corticosteroids (cortisol in humans or corticosterone in rodents) exert numerous effects on the central nervous system that regulate the stress response, mood, learning, and memory, and various neuroendocrine functions. The actions of corticosterone (CORT) in the brain are mediated via two receptor systems: the mineralocorticoid receptor (MR) and the glucocorticoid receptor (GR). It has been shown that the MR and GR are highly co-localized in the hippocampus. These receptors are mainly localized in the cytoplasm, and are translocated into the nucleus, after binding with hormones, to act as transcriptional factors. Thus, the subcellular dynamics of both receptors constitute one of the most important issues to be clarified. Given the differential actions of MR and GR in the central nervous system, it is of great consequence to elucidate how MR and GR are trafficked between the cytoplasm and nucleus and how their interactions are regulated by hormones and/or other molecules to exert their functional activities. In this chapter, we describe our recent studies of corticosteroid receptor dynamics in living cells, focusing on three points: (1) time-lapse imaging of green fluorescent protein (GFP)-labeled corticosteroid receptors; (2) intranuclear dynamics of GFP-labeled corticosteroid receptors using the technique of fluorescence recovery after photobleaching; and (3) the possibility of heterodimer formation using the fluorescence resonance energy transfer technique. We discuss various factors affecting the dynamics of these receptors. Furthermore, we present future directions in the in vivo molecular imaging of corticosteroid receptors at the whole brain level.
DOI: 10.1016/s0006-3495(98)77976-7
发表时间: 1998-05-01
影响因子: 3.4
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K.I.Matsuda:“雌激素受体 (ER)α 和 ERβ 的共定位和配体依赖性离散分布”分子内分泌学。 16. 2215-2230 (2002)
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DOI: 10.1073/pnas.89.9.3830
发表时间: 1992
影响因子: 11.1
作者:
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DOI: 10.1146/annurev.ph.49.030187.002145
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影响因子: 18.2
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