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Lineage tracing on transcriptional landscapes links state to fate during differentiation
Science ( IF 41.037 ) Pub Date : 2020-02-14 , DOI: 10.1126/science.aaw3381
Caleb Weinreb, Alejo Rodriguez-Fraticelli, Fernando D. Camargo, Allon M. Klein

A challenge in biology is to associate molecular differences among progenitor cells with their capacity to generate mature cell types. Here, we used expressed DNA barcodes to clonally trace transcriptomes over time and applied this to study fate determination in hematopoiesis. We identified states of primed fate potential and located them on a continuous transcriptional landscape. We identified two routes of monocyte differentiation that leave an imprint on mature cells. Analysis of sister cells also revealed cells to have intrinsic fate biases not detectable by single-cell RNA sequencing. Finally, we benchmarked computational methods of dynamic inference from single-cell snapshots, showing that fate choice occurs earlier than is detected by state-of the-art algorithms and that cells progress steadily through pseudotime with precise and consistent dynamics.
更新日期:2020-02-13

 

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