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Company: HyClone
Catalog#: SH30236.02
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Strategy of Isolating ‘Primed’ Tumor Initiating Cells Based on Mitochondrial Transmembrane Potential
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Date:
2021-03-05
[Abstract]  

Various stem cells have been found to be dependent on mitochondrial energetics. The role of mitochondria in regulating the self-renewal of normal stem cells and stem-like tumor initiating cells (TICs) is increasingly being appreciated. We proposed that TIC populations have a sub population of cells that are “primed” by mitochondria for self-renewal. Using ovarian cancer model, we have developed a protocol to identify and isolate these “primed” cells using Fluorescence-Assisted Cell Sorting (FACS). We combined live cell stains for a functional marker of TICs and for mitochondrial transmembrane potential to enrich TICs with higher mitochondrial potential that form in vitro spheroids 10-fold more than the other TICs with lower mitochondrial potential. This protocol

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[摘要]  [摘要]已经发现各种干细胞都依赖于线粒体的能量学。线粒体在调节正常干细胞和干细胞样肿瘤起始细胞(TICs)自我更新中的作用日益受到人们的重视。我们提出,TIC种群具有由线粒体“引发”自我更新的亚细胞群。使用卵巢癌模型,我们开发了一种协议,可以使用荧光辅助细胞分选(FACS)识别和分离这些“初免”细胞。我们结合活细胞染色剂作为TIC的功能标记物和线粒体跨膜电位,以富集具有更高线粒体电位的TIC(在体外形成)球状体比线粒体电位较低的其他TIC高10倍。该协议可以直接使用或修改以用于各种小区类型。因此,预期该方案对于干细胞群体中线粒体和能量异质性的基本理解是不可侵犯的,并且在再生医学和癌症生物学的转化研究中也可能被证明是有价值的。


背景技术肿瘤中的细胞异质性对癌症治疗提出了严峻的挑战(Magee等,2012)。当某些肿瘤通过自身更新和分化维持肿瘤时,其与肿瘤抗性的肿瘤起始细胞(也称为癌症干细胞)分层地排列在细胞层次的底部(Magee et ...

Generation of T cells from Human and Nonhuman Primate Pluripotent Stem Cells
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Date:
2020-07-05
[Abstract]  Pluripotent stem cells (PSCs) have the potential to provide homogeneous cell populations of T cells that can be grown at a clinical scale and genetically engineered to meet specific clinical needs. OP9-DLL4, a stromal line ectopically expressing the Notch ligand Delta-like 4 (DLL4) is used to support differentiation of PSCs to T-lymphocytes. This article outlines several protocols related to generation of T cells from human and non-human primate (NHP) PSCs, including initial hematopoietic differentiation of PSC on OP9 feeders or defined conditions, followed by coculture of the OP9-DLL4 cells with the PSC-derived hematopoietic progenitors (HPs), leading to efficient differentiation to T lymphocytes. In addition, we describe a protocol for robust T cell generation from hPSCs conditionally ... [摘要]  [摘要] 多能干细胞(PSCs)有潜力提供同质的T细胞群体,这些细胞可以在临床规模上生长,并通过基因工程来满足特定的临床需求。OP9-DLL4是一种异位表达Notch配体Delta-like 4(DLL4)的基质细胞系,用于支持psc向T淋巴细胞的分化。本文概述了从人类和非人类灵长类(NHP)PSC中产生T细胞的几种方法,包括在OP9喂食者或特定条件下对PSC进行初始造血分化,然后将OP9-DLL4细胞与PSC衍生的造血祖细胞(HPs)共培养,从而有效地分化成T淋巴细胞。此外,我们描述了一个从有条件表达ETS1的hPSCs中产生健壮T细胞的方案。所提出的协议提供了一个平台,用于疾病建模和评估其在大型动物模型免疫治疗中的应用。

[背景] T淋巴细胞(T细胞)在细胞介导的免疫反应中起着关键作用,参与肿瘤细胞的监测和杀伤。在过去的几十年里,已经开发了几种策略来重定向、培养和/或增强抗肿瘤的T淋巴细胞(Houot等人,2015年;June等人,2018年),并将其用于基于T细胞的过继免疫治疗。最近的临床试验表明,用嵌合抗原受体(CAR)-T细胞治疗复发性和难治性淋巴瘤患者的疗效显著(Riviere和Sadelain,2017)。

人类多能干细胞(hPSCs),包括胚胎(hESCs)和诱导(hiPSCs),为生产用于过继性细胞免疫疗法的T细胞提供了一种很有前景的资源,可与基因工程技术相结合,产生现成的CAR ...

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