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Company: Millipore Sigma
Catalog#: S5011
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Efficient Agrobacterium-mediated Transformation of the Elite–Indica Rice Variety Komboka
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Date:
2020-09-05
[Abstract]  Genetic transformation is crucial for both investigating gene functions and for engineering of crops to introduce new traits. Rice (Oryza sativa L.) is an important model in plant research, since it is the staple food for more than half of the world’s population. As a result, numerous transformation methods have been developed for both indica and japonica rice. Since breeders continuously develop new rice varieties, transformation protocols have to be adapted for each new variety. Here we provide an optimized transformation protocol with detailed tips and tricks for a new African variety Komboka using immature embryos. In Komboka, we obtained an apparent transformation rate of up to 48% for GUS/GFP reporter gene constructs using this optimized protocol. This ... [摘要]  
[摘要 ] 遗传转化对于研究基因功能和农作物工程引入新性状均至关重要。水稻(Oryza sativa L.)是植物研究中的重要模型,因为它是世界一半以上人口的主食。其结果是,大量的转化方法已经开发了两个籼稻和粳稻米。由于育种者不断开发新的水稻品种,因此必须针对每个新品种适应转化方案。在这里,我们为使用未成熟胚的非洲新品种Komboka 提供了一种优化的转化协议,包括详细的技巧和窍门。在Komboka中,我们使用此优化方案对GUS / GFP报告基因构建体的表观转化率高达48%。该协议也适用于其他优质lite 稻品种。


[背景 ] 为植物的遗传转化的各种方法公顷一直在开发,例如穿孔(Shimamoto PEG介导的原生质体转染。等人,1989;达塔。等人,1992),生物射弹转化(Christou的等人,1991)和农杆菌-介导的转化(Slamet-Loedin 等,2014)。农杆菌介导的转化是将DNA引入植物的最广泛使用的方法之一(van Wordragen and Dons,1992)。该方法已被广泛用于研究,并已成为生物技术的关键先决条件。自从开发新的育种技术(如基因组编辑)以来,它就变得越来越重要(Char ...

Integration of Human Induced Pluripotent Stem Cell (hiPSC)-Derived Neurons into Rat Brain
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Date:
2020-09-05
[Abstract]  Human neuron transplantation offers novel opportunities for modeling human neurologic diseases and potentially replacement therapies. However, the complex structure of the human cerebral cortex, which is organized in six layers with tightly interconnected excitatory and inhibitory neuronal networks, presents significant challenges for in vivo transplantation techniques to obtain a balanced, functional and homeostatically stable neuronal network. Here, we present a protocol to introduce human induced pluripotent stem cell (hiPSC)-derived neural progenitors to rat brains. Using this approach, hiPSC-derived neurons structurally integrate into the rat forebrain, exhibit electrophysiological characteristics, including firing, excitatory and inhibitory synaptic activity, and establish ... [摘要]  [摘要] 人类神经元移植为建模人类神经系统疾病和潜在的替代疗法提供了新的机会。然而,人脑皮层的复杂结构分为六层,具有紧密互连的兴奋性和抑制性神经元网络,这对体内移植技术获得平衡,功能稳定和稳态稳定的神经元网络提出了重大挑战。在这里,我们提出了一项协议,将人类诱导的多能干细胞(hiPSC )衍生的神经祖细胞引入大鼠脑。使用这种方法,hiPSC 衍生的神经元在结构上整合到大鼠前脑中,表现出电生理特性,包括放电,兴奋性和抑制性突触活性,并与宿主电路建立神经元连通性。


[背景] 人类大脑皮层是一个复杂的细胞镶嵌体,在不同的皮质层(I-VI)中包含多样化的神经元亚型,可建立轴突输出和树突状输入的特定模式,提供了皮质电路的基本底物(Rakic,2009; Lodato 等等人,2011; Lui 等人,2011)。特别地,兴奋性和抑制性神经传递的平衡对于适当的脑功能是必需的(Turrigiano和Nelson,2004)。人类诱导的多能干细胞(hiPSC )可以在人类遗传背景下对人类神经系统疾病进行建模(Dolmetsch和Geschwind,2011; Brennand 等,2015; Vera和Studer,2015)。建立体外系统以将hiPSCs ...

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