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Sodium hydroxide

氢氧化钠

Company: Wako Pure Chemical Industries
Catalog#: 197-02125
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Generation of Chemically Induced Liver Progenitors (CLiPs) from Rat Adult Hepatocytes
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Date:
2018-01-20
[Abstract]  Primary mature hepatocytes (MHs) or their progenitor cells are candidate cell sources for cell transplantation therapy in severe liver diseases. However, stable culture of these cells or generation of equivalent cells from pluripotent stem cells has been limited. Using a cocktail of small molecules that we previously found useful in stable culture of multiple types of stem/progenitor cells, we recently established a novel method to generate bipotent liver progenitor cells, named chemically induced liver progenitors (CLiPs), from adult rat MHs. Here, we describe a detailed protocol for the induction of rat CLiPs. We first describe the method to isolate primary rat MHs and then describe how to induce CLiPs from these MHs. In addition, we describe a method to evaluate the bipotentiality of ... [摘要]  原代成熟肝细胞(MH)或其祖细胞是重症肝病中细胞移植治疗的候选细胞来源。然而,这些细胞的稳定培养或多能干细胞的等效细胞的产生受到限制。我们使用先前在多种类型的干/祖细胞稳定培养中发现有用的小分子混合物,最近建立了一种从成年大鼠MHs产生双能肝脏祖细胞(命名为化学诱导肝祖细胞(CLiPs))的新方法。在这里,我们描述了诱导大鼠CLiPs的详细方案。我们首先描述分离原代鼠MH的方法,然后描述如何从这些MH中诱导CLiPs。另外,我们描述了一种评估产生的CLiPs分化成肝细胞和胆管上皮细胞的双能性的方法。我们还介绍了如何通过长期的文化和详细的示例数据建立稳定的CLiP。可以在2周内产生初级CLiPs,并且可以在2.5-4个月内建立经历10次传代的稳定的CLiPs,批次间变异性。
【背景】对于实现肝病再生医学的新型细胞来源有着强烈的需求。目前唯一的治疗终末期肝病的方法是肝移植,但是由于供者短缺,其应用受到限制。最近,我们小组提出了一种产生能够在体外稳定地扩增的新型LPC的方法,并且可以以广泛的效率重新繁殖慢性肝炎动物模型的损伤肝脏(Katsuda等人, / ...

Observation of Chloroplast Movement in Vallisneria
Author:
Date:
2015-11-05
[Abstract]  Chloroplasts accumulate to weak light and escape from strong light. These light-induced responses have been known from the 19th century (Böhm, 1856). Up to now, many scientists have developed different methods to investigate these dynamic phenomena in a variety of plant species including the model plant Arabidopsis thaliana, a terrestrial dicot (Wada, 2013). Especially, a serial recording to trace the position of individual chloroplast for the analysis of its mode of movement is critical to understand the underlying mechanism. An aquatic monocot Vallisneria (Alismatales: Hydrocharitaceae, Figure 1A) has contributed over a century to such investigation (Senn, 1908; Zurzycki, 1955; Seitz, 1967), because Vallisneria leaves have rectangular parallelepiped-shaped ... [摘要]  叶绿体累积到弱光并从强光中逃逸。这些光诱发的反应从19世纪就已知(Böhm,1856)。到目前为止,许多科学家已经开发了不同的方法来研究各种植物物种中的这些动态现象,包括模拟植物拟南芥(Arabidopsis thaliana),一种陆生双子叶植物(Wada,2013)。特别是,跟踪单个叶绿体的位置,用于分析其运动模式的连续记录对于理解底层机制至关重要。水生单子叶植物Vallisneria(Alismatales:Hydrocharitaceae,图1A)在一个世纪以来已经对这种研究作出贡献(Senn,1908; Zurzycki,1955; Seitz,1967),因为Vallisneria 叶具有在单层中有序排列的长方形表皮细胞(图1B),为显微镜研究提供了优良的实验系统。在这里我们描述了一个协议为最新的时间推移成像程序来分析Vallisneria 叶绿体运动。使用这个和原型程序,相关的光感受器系统(Izutani等人,1990; Dong等人,1995; Sakai等人, ,2015),与肌动蛋白细胞骨架的关联(Dong等人,1996; Dong等人,1998; Sakai和Takagi 2005; Sakurai等人,/sh>,2005),并且已经对Ca 2 + (Sakai等人,2015)的调节作用进行了深入研究。

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