Transcriptomics

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Polychromic reporter mice reveal unappreciated innate lymphoid cell progenitor heterogeneity and elusive ILC3 progenitors in bone marrow


ABSTRACT: Innate lymphoid cells (ILCs) play strategic roles in tissue homeostasis and immunity. ILCs arise from lymphoid progenitors undergoing lineage restriction leading to the development of specialised ILC subsets. We generated ‘5x polychromILC’ compound transcription factor reporter mice to delineate ILC precursor states by revealing the multifaceted expression of key ILC-associated transcription factors (Id2, Bcl11b, Gata3, Rorc(γt) and Rora) during ILC development in the bone marrow. This approach allowed previously unattained enrichment of rare progenitor subsets and revealed hitherto unappreciated ILC precursor heterogeneity. In vivo and in vitro assays identified novel precursors with potential to generate all ILC subsets and natural killer cells, and also permitted discrimination of elusive ILC3 bone marrow antecedents. Single cell gene expression analysis identified a discrete ILC2-committed population and delineated transition states between early progenitors and a highly heterogeneous ILC1/3/NK precursor cell cluster. This diversity may facilitate greater lineage potential upon progenitor recruitment to peripheral tissues.

ORGANISM(S): Mus musculus

PROVIDER: GSE131038 | GEO | 2019/05/11

REPOSITORIES: GEO

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