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NuncTM Lab-TekTM II Chamber SlideTM System

实验室二室滑动w /盖Rs玻璃幻灯片2井

公司名称: Thomas Scientific
产品编号: 154461
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3D Stroma Invasion Assay
Author:
Date:
2017-03-20
[Abstract]  We have developed a 3D co-culture system composed of fibroblasts and colorectal cancer cells that enables us to study the desmoplastic reaction. This method also enables us to study the influence of the desmoplastic reaction on the migration of colorectal cancer cells through the surrounding stroma. This protocol has been previously published (Coulson-Thomas et al., 2011) and is described here in more detail. [摘要]  我们开发了一种由成纤维细胞和结肠直肠癌细胞组成的3D共培养系统,使我们能够研究脱发反应。这种方法还使我们能够研究脱发反应对结肠直肠癌细胞通过周围基质的迁移的影响。以前已经公布了该协议(Coulson-Thomas等人,2011),并且在此更详细地描述。

背景 癌症的进展依赖于癌细胞和周围细胞如成纤维细胞,炎性细胞和内皮细胞之间的复杂的串扰,其形成癌症微环境。成纤维细胞是主要的细胞外基质产生细胞并且负责组织的结构形成。肿瘤周围的成纤维细胞被癌细胞“激活”成肿瘤相关成纤维细胞(TAFs),并在肿瘤发生和转移中发挥关键作用。在一些癌症中,TAF上调细胞外基质表达,产生一种主要由胶原纤维和蛋白多糖组成的无组织基质,其影响癌细胞增殖,迁移和扩散。这被称为脱发反应,并且在癌细胞生长期间,不同的肿瘤可能表现出各种等级的发育不良。

Telomere Dysfunction Induced Foci (TIF) Analysis
Author:
Date:
2015-11-20
[Abstract]  Telomerase maintains telomeric DNA in eukaryotes during early developments, ~90% of cancer cells and some proliferative stem like cells. Telomeric repeats at the end of chromosomes are associated with the shelterin complex. This complex consists of TRF1, TRF2, Rap1, TIN2, TPP1, POT1 which protect DNA from being recognized as DNA double-stranded breaks. Critically short telomeres or impaired shelterin proteins can cause telomere dysfunction, which eventually induces DNA damage responses at the telomeres. DNA damage responses can be identified by antibodies to 53BP1, gammaH2AX, Rad17, ATM, and ... [摘要]  端粒酶在早期发育期间在真核生物中维持端粒DNA,〜90%的癌细胞和一些增殖性干细胞。染色体末端的端粒重复与shelterin复合物相关。该复合物由TRF1,TRF2,Rap1,TIN2,TPP1,POT1组成,其保护DNA不被识别为DNA双链断裂。临界短的端粒或受损的遮蔽蛋白可引起端粒功能障碍,其最终在端粒诱导DNA损伤反应。 DNA损伤反应可以通过抗53BP1,gammaH2AX,Rad17,ATM和Mre11的抗体来鉴定。未封端的端粒的DNA损伤灶被称为端粒功能障碍诱导的Foci(TIF)(de Lange,2005; Takai等人,2003)。
TIF测定基于使用针对遮蔽蛋白如TRF2之一的抗体对抗DNA损伤标记物例如γ-H2AX和端粒的抗体的DNA损伤的共定位检测(Takai等人,2003; de Lange,2002; Karlseder等人,1999)。我们在这里描述的方法可以用于正常的人类和癌细胞。
其他常用的方法 - Telomere限制性片段(TRF)分析(Mender和Shay,2015b)和端粒重复扩增方案(TRAP) ...

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