Developmental barcoding of whole mouse via homing CRISPR.
Developmental barcoding of whole mouse via homing CRISPR.
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DOI:
10.1126/science.aat9804
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发表时间:
2018-08-31
期刊:
影响因子:
--
通讯作者:
Church GM
中科院分区:
文献类型:
--
作者:
Kalhor R;Kalhor K;Mejia L;Leeper K;Graveline A;Mali P;Church GM
In vivo barcoding using nuclease-induced mutations is a powerful approach for recording biological information, including developmental lineages; however, its application in mammalian systems has been limited. We present in vivo barcoding in the mouse with multiple homing guide RNAs that each generate hundreds of mutant alleles and combine for an exponential diversity of barcodes. Activation upon conception and continued mutagenesis through gestation result in developmentally barcoded mice wherein information is recorded in lineage-specific mutations. We use these recordings for reliable post hoc reconstruction of the earliest lineages and investigating axis development in the brain. Our results provide an enabling and versatile platform for in vivo barcoding and lineage tracing in a mammalian model system. In vivo barcoding is implemented in a mouse model using multiple independent barcoding loci to record and reconstruct lineages.
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