Mosaic copy number variation in human neurons.

Mosaic copy number variation in human neurons.
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DOI:
10.1126/science.1243472
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发表时间:
2013-11-01
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Gage FH
Gage FH
中科院分区:
其他
文献类型:
--
作者:
McConnell MJ;Lindberg MR;Brennand KJ;Piper JC;Voet T;Cowing-Zitron C;Shumilina S;Lasken RS;Vermeesch JR;Hall IM;Gage FH

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我们使用单细胞基因组方法来绘制从人诱导多能干细胞(hiPSC)系和死后人脑获得的神经元中的DNA拷贝数变异(CNV)。我们鉴定了非整倍体神经元以及整倍体神经元中的许多亚染色体CNV。神经型hiPSC衍生的神经元具有比成纤维细胞更大的CNV,并且在hiPSC衍生的神经元中发现了几个大的缺失,但在匹配的神经祖细胞中没有发现。内源性人类额叶皮质神经元的单细胞测序显示,13%-41%的神经元具有至少一个兆碱基规模的从头CNV,缺失是重复的两倍,并且一个神经元子集具有高度异常的基因组,其标记为多重改变。我们的研究结果表明,马赛克拷贝数变异是丰富的人类神经元。
We used single cell genomic approaches to map DNA copy number variation (CNV) in neurons obtained from human induced pluripotent stem cell (hiPSC) lines and post-mortem human brains. We identified aneuploid neurons as well as numerous subchromosomal CNVs in euploid neurons. Neurotypic hiPSC-derived neurons had larger CNVs than fibroblasts, and several large deletions were found in hiPSC-derived neurons but not in matched neural progenitor cells. Single cell sequencing of endogenous human frontal cortex neurons revealed that 13%-41% of neurons have at least one megabase-scale de novo CNV, that deletions are twice as common as duplications, and that a subset of neurons have highly aberrant genomes marked by multiple alterations. Our results show that mosaic copy number variation is abundant in human neurons.
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