Reprogramming roadmap reveals route to human induced trophoblast stem cells

Autor: Anna L. Leichter, Carmel M. O’Brien, David R. Powell, Hun S. Chy, Jahnvi Pflueger, Ziyi Huang, Guizhi Sun, Amander T. Clark, Joseph Chen, Jacob M. Paynter, Andrew L. Laslett, Xin Yi Choo, Sam Buckberry, Christian M. Nefzger, Haroon Naeem, Jaber Firas, Pratibha Tripathi, John F. Ouyang, Vincent Tano, Daniela S. Valdes, Jia Ping Tan, Susan K. Nilsson, Michael R. Larcombe, Daniel Poppe, Di Chen, Fernando J. Rossello, Jan Schröder, Xiaodong Liu, Alexandra Grubman, Anja S Knaupp, Owen J. L. Rackham, Jose M. Polo, Ryan Lister, Yu Bo Yang Sun, Luciano G. Martelotto, Laurent David, William A. Pastor, Kathryn C. Davidson, Partha Pratim Das
Rok vydání: 2020
Předmět:
Zdroj: Nature. 586:101-107
ISSN: 1476-4687
0028-0836
DOI: 10.1038/s41586-020-2734-6
Popis: The reprogramming of human somatic cells to primed or naive induced pluripotent stem cells recapitulates the stages of early embryonic development 1–6. The molecular mechanism that underpins these reprogramming processes remains largely unexplored, which impedes our understanding and limits rational improvements to reprogramming protocols. Here, to address these issues, we reconstruct molecular reprogramming trajectories of human dermal fibroblasts using single-cell transcriptomics. This revealed that reprogramming into primed and naive pluripotency follows diverging and distinct trajectories. Moreover, genome-wide analyses of accessible chromatin showed key changes in the regulatory elements of core pluripotency genes, and orchestrated global changes in chromatin accessibility over time. Integrated analysis of these datasets revealed a role for transcription factors associated with the trophectoderm lineage, and the existence of a subpopulation of cells that enter a trophectoderm-like state during reprogramming. Furthermore, this trophectoderm-like state could be captured, which enabled the derivation of induced trophoblast stem cells. Induced trophoblast stem cells are molecularly and functionally similar to trophoblast stem cells derived from human blastocysts or first-trimester placentas 7. Our results provide a high-resolution roadmap for the transcription-factor-mediated reprogramming of human somatic cells, indicate a role for the trophectoderm-lineage-specific regulatory program during this process, and facilitate the direct reprogramming of somatic cells into induced trophoblast stem cells.
Databáze: OpenAIRE
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