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VWR SignatureTM Ergonomic High Performance Single-Channel Variable Volume Pipettors

VWR SignatureTM Ergonomic High Performance Single-Channel Variable Volume Pipettors

Company: VWR
Catalog#: 89079-970
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Total RNA Extraction from Dinoflagellate Symbiodinium Cells
Author:
Date:
2018-06-05
[Abstract]  Dinoflagellates are unicellular algae that can have photosynthetic or nonphotosynthetic lifestyles. Dinoflagellates in the genus Symbiodinium can enter endosymbiotic associations with corals, providing the metabolic basis for the highly productive and biologically diverse coral-reef ecosystems (Hoegh-Guldberg, 1999), as well as with other cnidarians, including sea anemones and jellyfish, and non-cnidarian hosts (Trench, 1993; Lobban et al., 2002; Mordret et al., 2016).

Here, I describe a protocol for isolating total RNA from Symbiodinium cells.
[摘要]  鞭毛藻是单细胞藻类,可以有光合或非光合生活方式。 Symbiodinium属中的甲藻类可以与珊瑚进入内共生关系,为高生产力和生物多样性珊瑚礁生态系统提供代谢基础(Hoegh-Guldberg,1999),以及其他的cnidarians,包括 海葵和海蜇,以及非刺猬寄主(Trench,1993; Lobban等人,2002; Mordret等人,2016)。

在这里,我描述了从Symbiodinium细胞中分离总RNA的方案。

Dual-sided Voltage-sensitive Dye Imaging of Leech Ganglia
Author:
Date:
2018-03-05
[Abstract]  In this protocol, we introduce an effective method for voltage-sensitive dye (VSD) loading and imaging of leech ganglia as used in Tomina and Wagenaar (2017). Dissection and dye loading procedures are the most critical steps toward successful whole-ganglion VSD imaging. The former entails the removal of the sheath that covers neurons in the segmental ganglion of the leech, which is required for successful dye loading. The latter entails gently flowing a new generation VSD, VF2.1(OMe).H, onto both sides of the ganglion simultaneously using a pair of peristaltic pumps. We expect the described techniques to translate broadly to wide-field VSD imaging in other thin and relatively transparent nervous systems. [摘要]  在这个协议中,我们介绍了一种有效的方法,用于Tomina和Wagenaar(2017)中使用的电压敏感染料(VSD)加载和水蛭神经节成像。 解剖和染料加载程序是成功完成全神经节VSD成像的关键步骤。 前者需要去除覆盖水蛭节段神经节神经元的鞘,这是成功染料加载所需的。 后者需要使用一对蠕动泵同时轻柔地将新一代VSD VF2.1(OMe).H流入神经节的两侧。 我们期望所描述的技术广泛地转化为其他薄且相对透明的神经系统中的宽视场VSD成像。

【背景】双面显微镜是一种宽视野荧光成像系统,由一对精确对准的显微镜组成,用于观察来自对面的神经元制剂并且一次显示不同的焦平面(Tomina and Wagenaar,2017)。通过将该光学系统与新一代电压敏感染料(VSD),VoltageFluor(Miller等人,2012; Woodford等人,2015),荧光可以同时从不同深度的神经元捕获编码具有高保真度膜电压的信号。我们将这种泛神经元记录系统应用于药用水蛭的神经系统,我们利用电生理学方法诱发虚构行为并定量控制可识别神经元的膜电位(Tomina and ...

Rapid Isolation of Total Protein from Arabidopsis Pollen
Author:
Date:
2017-04-20
[Abstract]  Arabidopsis pollen is an excellent system for answering important biological questions about the establishment and maintenance of cellular polarity and polar cell growth, because these processes are amenable to the genetic and genomic approaches that are readily available in Arabidopsis. Given that proteins are the direct executors of a wide variety of cellular processes, it is important to rapidly and efficiently isolate total protein for various protein-based analyses, such as Western blotting, co-immunoprecipitation and mass spectrometry, among others. Here we present a protocol for rapid isolation of total protein from Arabidopsis pollen, which is adapted from our recently published paper (Chang and Huang, 2015). [摘要]  拟南芥花粉是用于回答关于细胞极性和极性细胞生长的建立和维持的重要生物学问题的优秀系统,因为这些方法适用于在中容易获得的遗传和基因组方法, 拟南芥。 鉴于蛋白质是各种细胞过程的直接执行者,重要的是快速有效地分离各种基于蛋白质的分析的总蛋白质,例如Western印迹,共免疫沉淀和质谱等。 在这里,我们提出了一种从拟南芥花粉中快速分离总蛋白的方案,该方法是从我们最近发表的论文(Chang and Huang,2015)中得到改编的。
花粉是性繁殖植物生命周期的关键阶段。花粉萌发和随后的管生长提供了两个非活动精子细胞在开花植物中进行双重受精的通道。花粉通常被用作解决基本细胞生物学问题的示范系统,例如细胞极性和极细胞生长的建立和维持,以及肌动蛋白细胞骨架的结构和功能(Chen等人, ,2009; Qu等人,2015)。通常来自百合和烟草的花粉由于粒度大而被广泛使用,这使得它们在显微镜下容易收集和观察。相比之下,拟南芥花粉小,收集大量花粉以分离足够量的蛋白质以进行下游分析(如Western印迹和质谱法)相对困难。因此,开发快速分离总拟蛋白质拟南芥花粉的方案将有助于相关分析。

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