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首页> 外文期刊>Journal of genetics >Role of Notch signalling pathway in cancer and its association with DNA methylation
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Role of Notch signalling pathway in cancer and its association with DNA methylation

机译:Notch信号通路在癌症中的作用及其与DNA甲基化的关系

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The Notch signalling pathway is an evolutionarily conserved cell signalling pathway involved in the development of organisms as diverse as humans and fruit flies. It plays a pivotal role in cell fate determination. Dysregulated Notch signalling is oncogenic, inhibits apoptosis and promotes cell survival. Abnormal Notch signalling is seen in many cancers like T-cell acute lymphoblastic leukaemia, acute myeloid leukaemia and cancers of the breast, cervix, colon, pancreas, skin and brain. Inhibition of Notch signalling leads to growth arrest and differentiation in those cells in which Notch pathway is activated and this represents a new target for cancer therapy. Cancer develops from genome defects, including both genetic and epigenetic alterations. Epigenetics deals with heritable changes in gene function that occur without a change in the DNA sequence. Among various epigenetic alterations such as acetylation, phosphorylation, ubiquitylation and sumoylation, promoter region methylation is considered as an important component in cancer development. Epigenetic alterations can be used as biomarkers in screening, detection, diagnosis, staging and risk stratification of various cancers. DNA methylation can be therapeutically reversed and demethylating drugs have proven to be promising in cancer treatment. This review focusses on the methylation status of genes in Notch signalling pathway from various cancers and how this epigenetic alteration can be used as a biomarker for cancer diagnosis and subsequent treatment.
机译:Notch信号传导途径是一种进化保守的细胞信号传导途径,参与了人类和果蝇等多种生物的发育。它在细胞命运决定中起着关键作用。 Notch信号转导失调是致癌的,抑制细胞凋亡并促进细胞存活。 Notch信号异常出现在许多癌症中,例如T细胞急性淋巴细胞白血病,急性髓细胞性白血病以及乳腺癌,宫颈癌,结肠癌,胰腺癌,皮肤癌和脑癌。 Notch信号的抑制导致其中Notch通路被激活的那些细胞中的生长停滞和分化,这代表了癌症治疗的新目标。癌症是由基因组缺陷引起的,包括基因和表观遗传学改变。表观遗传学处理基因功能的可遗传变化,这种变化发生在DNA序列没有变化的情况下。在各种表观遗传学改变中,例如乙酰化,磷酸化,泛素化和SUMO化,启动子区域甲基化被认为是癌症发展的重要组成部分。表观遗传改变可用作各种癌症的筛查,检测,诊断,分期和风险分层的生物标记。 DNA甲基化可以逆转治疗,去甲基化药物已被证明在癌症治疗中很有前途。这篇综述着重于Notch信号通路中来自各种癌症的基因的甲基化状态,以及这种表观遗传改变如何用作癌症诊断和后续治疗的生物标记。

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