脑细胞可以自改DNA
近日刊发了一篇里程碑级别的神经细胞研究，在该文章中，研究人员称，他们发现大脑神经元能够自行修改自身的DNA。 长期以来，生物医学界都认为人类的体细胞DNA是固定的，据Science报道，这一“脑细胞可以修改自己的DNA”发现，被评价为“可能是近些年分子生物学领域重大的发现之一”。 研究者分析了6名健康老年人和7名非继发性阿兹海默症患者所捐赠的大脑，发现患有阿兹海默症的患者，其神经元细胞携带的APP变异基因品种数量是普通人的6倍。因此，研究者推测，脑细胞自行修改DNA的能力，可能导致了阿兹海默症的发生。
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