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Hydrochloric acid 37% RPE - For analysis

Company: CARLO ERBA Reagents
Catalog#: 403878
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DNA Fiber Assay upon Treatment with Ultraviolet Radiations
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2017-06-05
[Abstract]  Genome stability is continuously challenged by a wide range of DNA damaging factors. To promote a correct DNA repair and cell survival, cells orchestrate a coordinated and finely tuned cascade of events collectively known as the DNA Damage Response (DDR). Ultra Violet (UV) rays are among the main environmental sources of DNA damage and a well recognized cancer risk factor. UV rays induce the formation of toxic cyclobutane-type pyrimidine dimers (CPD) and [6-4]pyrimidine-pyrimidone (6-4PP) photoproducts which trigger the activation of the intra-S phase cell cycle checkpoint (Kaufmann, 2010) aimed at preventing replication fork collapse, late origin firing, and stabilizing fragile sites (Branzei and Foiani, 2009). To monitor the activation of the intra-S phase checkpoint in response to UV ... [摘要]  基因组稳定性不断受到DNA损伤因素的广泛影响。为了促进正确的DNA修复和细胞存活,细胞协调统一称为DNA损伤反应(DDR)的协调和精细调整的事件级联。超紫外线(UV)是DNA损伤的主要环境来源之一,也是公认的癌症危险因素。紫外线诱导形成毒性环丁烷型嘧啶二聚体(CPD)和[6-4]嘧啶嘧啶酮(6-4PP)光产物,其触发S期细胞周期检查点的活化(Kaufmann,2010),目的在于防止复制叉崩溃,晚期起火和稳定脆弱场所(Branzei和Foiani,2009)。为了监测响应于UV型C(UVC)暴露的S-S相检查点的激活,DNA纤维测定可用于分析新的起始点和DNA合成速率(Jackson等, ,1998; Merrick等人,2004; Alfano等人,2016)。 DNA纤维测定技术在90年代被设想,然后通过使用并入新生DNA链中的胸苷类似物(如CldU和IdU)进一步开发。通过用这些类似物以连续模式处理细胞,可以通过携带不同荧光团的特异性抗体来观察细胞,可以监测复制叉活性并评估其如何受到紫外辐射或其他试剂的影响。

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