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DPBS, without calcium and magnesium

Company: Thermo Fischer Scientific
Catalog#: 14190250
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In vitro Differentiation of Human iPSC-derived Cardiovascular Progenitor Cells (iPSC-CVPCs)
Author:
Date:
2020-09-20
[Abstract]  Induced pluripotent stem cell derived cardiovascular progenitor cells (iPSC-CVPCs) provide an unprecedented platform for examining the molecular underpinnings of cardiac development and disease etiology, but also have great potential to play pivotal roles in the future of regenerative medicine and pharmacogenomic studies. Biobanks like iPSCORE ( Stacey et al., 2013; Panopoulos et al., 2017), which contain iPSCs generated from hundreds of genetically and ethnically diverse individuals, are an invaluable resource for conducting these studies. Here, we present an optimized, cost-effective and highly standardized protocol for large-scale derivation of human iPSC-CVPCs using small molecules and purification using metabolic selection. We have successfully applied this protocol ... [摘要]  [摘要 ] 诱导性多能干细胞衍生的心血管祖细胞(iPSC-CVPCs)为检查心脏发育和疾病病因的分子基础提供了前所未有的平台,但在再生医学和药物基因组学的未来中也具有重要作用。像iPSCORE这样的生物库(Stacey 等,2013 ;Panopoulos 等,2017), 其中包含由数百个遗传和种族不同的个体产生的iPSC,是进行这些研究的宝贵资源。在这里,我们为小分子大规模衍生人iPSC-CVPCs和代谢选择纯化提供了一种优化,具有成本效益和高度标准化的方案。我们已经成功地应用了该协议,从154种不同的iPSCORE iPSC品系中获得了iPSC-CVPC,从而获得了大量的高纯度心脏细胞。一个重要的我们的协议的组成部分是Ç ELL Ç onfluency 估计S(ccEstimate ),用于估计当iPSC集单层将达到80%汇合,这是用于发起的iPSC-CVPC推导最佳的时间的自动方法,并且使得协议为易于在具有不同增长率的iPSC系列中使用。此外,我们发现跨iPSC-CVPC的细胞异质性是由于两种截然不同的心脏细胞类型(心肌细胞(CMs)和心外膜衍生细胞(EPDCs))的比例不同导致的,这两种细胞在心脏再生中均具有关键作用。该协议消除了iPSC线到线优化的需要,并且可以轻松地进行调整和扩展,以进行高通量研究或生成大量适用于再生医学应用的细胞。

[背景 ] ...

Real-time in vivo Imaging of LPS-induced Local Inflammation and Drug Deposition in NF-κB Reporter Mice
Author:
Date:
2020-08-20
[Abstract]  Wound, biomaterial, and surgical infections are all characterized by a localized and excessive inflammation, motivating the development of in vivo methods focused on the analysis of local immune events. However, current inflammation models, such as the commonly used in vivo models of endotoxin-induced inflammation are based on systemic, usually intraperitoneal, administration of lipopolysaccharide (LPS), causing endotoxin shock. Here, we describe a model of LPS-induced local inflammation in NF-κB-RE-Luc reporter mice. LPS, alone or with added therapeutic substances, is delivered locally via a hydrogel which is deposited subcutaneously, providing a spatially defined environment, enabling in vivo bioimaging analyses of local NF-κB activation. Evaluation of drug ... [摘要]  [摘要 ] 伤口,生物材料和外科手术感染均以局部和过度炎症为特征,从而推动了专注于分析局部免疫事件的体内方法的发展。然而,当前的炎症模型,例如内毒素诱导的炎症的常用体内模型,是基于系统性的,通常是腹膜内注射脂多糖(LPS),引起内毒素休克。在这里,我们描述了LPS诱导局部炎症的模型NF- κ 乙-RE-Luc报告小鼠。LPS单独或与其他治疗物质一起通过水凝胶局部递送, 沉积皮下,提供一个空间限定的环境中,使得能够在体内生物成像本地NF-的分析κ 乙活化。可以在同一只小鼠中纵向分析药物功效的评估,并且使用荧光标记的药物,可以同时分析局部药物沉积,并将其与炎症部位相关联。最后,该方案还可以用于研究药物从局部沉积的凝胶和其他生物材料的保留和系统释放。

[背景 ] 局部过度的TLR应答的原因,有时不相称的炎症,如在不同类型的伤口和生物材料感染的观察。这些伤口并发症延迟了正常的愈合,并增加了严重感染和败血症的风险。考虑到后者,已经开发了败血症和内毒素休克的几种实验模型,其研究了系统性炎症的发展(Lewis 等,2016)。然而,需要从机械学和治疗学角度解决局部炎症事件的模型。甲转录ctivation 因子NF- κ 乙是各种炎性病症的关键组成部分,因此,NF- κ 乙被认为是重要的治疗靶标(刘等人,2017) 。实时的,纵向体内NF-的成像κ 乙活化NF κ ...

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