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Magnesium Chloride

氯化镁

公司名称: Thermo Fisher Scientific
产品编号: BP241
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Telomerase Repeated Amplification Protocol (TRAP)
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2015-11-20
[Abstract]  Telomeres are found at the end of eukaryotic linear chromosomes, and proteins that bind to telomeres protect DNA from being recognized as double-strand breaks thus preventing end-to-end fusions (Griffith et al., 1999). However, due to the end replication problem and other factors such as oxidative damage, the limited life span of cultured cells (Hayflick limit) results in progressive shortening of these protective structures (Hayflick and Moorhead, 1961; Olovnikov, 1973). The ribonucleoprotein enzyme complex telomerase- consisting of a protein catalytic component hTERT and a ... [摘要]  端粒存在于真核线性染色体的末端,并且结合端粒的蛋白质保护DNA不被识别为双链断裂,从而防止端对端融合(Griffith等人,1999) 。然而,由于末端复制问题和其他因素如氧化损伤,培养细胞的有限寿命(Hayflick极限)导致这些保护结构的逐渐缩短(Hayflick和Moorhead,1961; Olovnikov,1973)。由蛋白质催化组分hTERT和功能性RNA组分hTR 或组成的核糖核蛋白酶复合物端粒酶端粒酶通过添加端粒重复来抵消端粒缩短到约90%的原发性人类肿瘤和一些短暂增殖的干样细胞中染色体的末端(Shay和Wright,1996; Shay和Wright,2001)。这导致细胞的连续增殖,这是癌症的标志。因此,端粒生物学在衰老,癌症进展/转移以及靶向癌症治疗中具有中心作用。端粒生物学中常用的方法如端粒限制性片段(TRF)(Mender和Shay, 2015b),端粒重复扩增方案(TRAP)和端粒功能障碍诱导Foci(TIF)分析(Mender和Shay,2015a)。在这个详细的协议中,我们描述端粒重复扩增协议(TRAP)。 ...

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