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胰腺癌表观遗传学研究现状

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摘要 表观遗传学(epigenetic)是与遗传学(genetic)相对应的学科,已经深入发展到表观遗传组学(epigenome)水平。表观遗传学研究的是基因序列不发生改变的可遗传改变,这种可遗传改变调控基因表达变化,是基因表达转录调控的另一个层面。因此,DNA序列作用仅在于承载遗传信息,而表观遗传的机制对其表达的时空能起到调控作用,使得相同序列的基因组呈现出不同的基因表达和沉默模式,并且这种改变能代代相传,成为基因序列和差异表达、环境作用、表型的桥梁。表观遗传异常已被发现是癌症、遗传病、儿科疾病以及自身免疫性疾病和衰老等的原因。
出处 《中华胰腺病杂志》 CAS 2009年第4期285-288,共4页 Chinese Journal of Pancreatology
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