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Article Abstract
Innate lymphoid cells (ILCs) play important roles in regulating tissue homeostasis and innate immune responses. Generation of ILCs after engraftment of pluripotent stem cell (PSC)-derived hematopoietic progenitors (iHPCs) has not yet been reported. Here, we document that ILCs exist in Rag2Il2rg recipients engrafted with PSC-derived iHPCs guided by Runx1 and Hoxa9 expression. Upon transplantation, iHPCs immediately give rise to ILC-related progenitors containing common helper ILC progenitors in the bone marrow, followed by a more restricted population named ILC progenitors, which are able to further differentiate into mature ILCs in the primary and secondary immunodeficient recipients. The PSC-derived ILCs exhibit multiple tissue distributions and normal immunological functions. Single-cell transcriptomics illustrates the developmental trajectory of PSC-derived ILCs in vivo, which is consistent with that of natural ILCs. Our study provides insights into the generation of ILCs in animals transplanted with PSC-derived iHPCs as a cell source.
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| http://dx.doi.org/10.1016/j.celrep.2022.111569 | DOI Listing |
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