Nat Commun:通过识别DNA差异快速进行癌症初步诊断

2018-12-08 Nature自然科研 Nature自然科研

《自然-通讯》本周发表的一篇论文Epigenetically reprogrammed methylation landscape drives the DNA self-assembly and serves as a universal cancer biomarker报告了一项能在10分钟内完成的癌细胞检测。这项检测通过识别癌细胞和健康细胞之间的DNA差异,快速完成初步诊断。

《自然-通讯》本周发表的一篇论文Epigenetically reprogrammed methylation landscape drives the DNA self-assembly and serves as a universal cancer biomarker报告了一项能在10分钟内完成的癌细胞检测。这项检测通过识别癌细胞和健康细胞之间的DNA差异,快速完成初步诊断



表观遗传重编程调节基因组DNA的物理化学特性

甲基基团附着到DNA上的过程(这一过程被称为甲基化)受到遗传操控。在所有“成熟”的人类细胞中,DNA都携带这些修饰。癌细胞与健康细胞的基因组信息具有显著差异,进而导致大多数类型的癌细胞中甲基化水平和模式的差异。

澳大利亚昆士兰大学的Matt Trau及同事发现,癌细胞中不同的甲基化情况会影响DNA的物理和化学性质。在这些特性中,作者发现DNA与金纳米粒子的连接尤为紧密,并利用这一特性开发出了一种癌症检测方法。只需极少量来自患者的纯化的基因组DNA,就能在10分钟内完成检测,且检测结果仅靠肉眼就能辨别。作者在代表了不同癌症类型的100多个人类样本(72名癌症患者和31名健康个体的基因组DNA)中测试了这一方法。



甲基化对DNA-金亲疏性的作用

在目前的阶段,此方法只能检测是否有癌细胞存在,但无法识别其类型或疾病进展。今后应对更多样本进行测试,并在可能的情况下开展更详细的分析研究。

原始出处:
Abu Ali Ibn Sina, Laura G. Carrascosa, Ziyu Liang, et al. Epigenetically reprogrammed methylation landscape drives the DNA self-assembly and serves as a universal cancer biomarker. Nature Communications. Dec 2018.

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    2019-11-02 liuli5079
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    2019-03-19 liye789132251
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    2018-12-09 kafei

    学习了谢谢

    0

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    2018-12-08 惠映实验室

    学习了,谢谢分享。

    0

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