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Inverted bright light microscope equipped with a phase-contrast filter

倒置的明亮光显微镜配备相位对比滤光片

公司名称: ZEISS
产品编号: Observer.Z1
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Analysis of Cancer Stromal Reaction Using an O-ring Co-culture Assay
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Date:
2017-02-20
[Abstract]  We have developed a 2D heterotypic co-culture technique between fibroblasts and cancer cells that enables the study of the stromal reaction. For such, stromal cells are seeded and cultured immediately around a tumour cell line, and the cells establish cell-cell contacts, as well as a gradient of soluble factors throughout the stromal cells, similar to that found in tissues. Thus, this system also enables the researcher to distinguish between events that are caused by direct cell-cell contact and secreted factors. [摘要]  我们在成纤维细胞和癌细胞之间开发了二维异型共培养技术,可以研究基质反应。为此,将基质细胞接种并立即在肿瘤细胞系周围培养,并且细胞建立细胞 - 细胞接触以及遍及基质细胞的可溶性因子的梯度,类似于在组织中发现的。因此,该系统还使得研究者能够区分由直接的细胞 - 细胞接触和分泌因子引起的事件。

背景 组织内肿瘤的生长和存活取决于与周围基质细胞(如成纤维细胞,炎性细胞,内皮细胞和淋巴细胞)的相互作用。研究表明,随着肿瘤生长,癌细胞与周围成纤维细胞之间存在广泛的串扰。此外,肿瘤细胞可以将这些成纤维细胞激活成肿瘤相关成纤维细胞(TAF)。在某些情况下,这些成纤维细胞可能会限制肿瘤生长(Coulson-Thomas等人,2011和2013);然而,在许多情况下,这些TAF帮助肿瘤细胞生长和存活(Coulson-Thomas等,2010和2015)。因此,体外癌症研究也应考虑到TAF对癌细胞的保护作用。考虑到这一点,我们在成纤维细胞和癌细胞之间开发了2D异型共培养技术,可以在同一系统中研究TAF和癌细胞。

Transfection of Embryoid Bodies with miRNA Precursors to Induce Cardiac Differentiation
Author:
Date:
2016-02-05
[Abstract]   In recent years, the utilization of stem cell therapy to regenerate cardiac tissue has been proposed as a possible strategy to treat cardiac damage (Gnecchi et al., 2012, Aguirre et al., 2013; Sanganalmath and Bolli, 2013). Although encouraging results have been obtained in experimental models, the efficiency of cardiac regeneration is very poor and one of the major barriers to progress in the area of cell therapy for damaged heart is represented by the limited capacity of cells to differentiate into mature cardiomyocytes (CMC) (Laflamme and Murry, 2011). Cell manipulation ... [摘要]  近年来,已经提出利用干细胞治疗来再生心脏组织作为治疗心脏损伤的可能策略(Gnecchi等人,2012,Aguirre等人, >,2013; Sanganalmath和Bolli,2013)。虽然在实验模型中已经获得令人鼓舞的结果,但是心脏再生的效率非常差,并且在损伤的心脏的细胞治疗领域中进展的主要障碍之一是细胞分化成成熟心肌细胞的能力有限(CMC )(Laflamme和Murry,2011)。细胞操作和转染在本文中代表多种工具(Melo等人,2005; Dzau等人,2005)。鼠P19胚胎癌细胞是能够在体外分化成自发性搏动CMC的良好建立的细胞系。这种细胞系统具有有限的细胞培养要求,协议重现性和易于摄取和随后的异位遗传材料的表达,使其理想的心脏分化过程的研究。 P19细胞已经成功地用于获得对CMC分化的早期分子过程的重要见解(van der Heyden和Defize,2003; van der ...

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