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Bennstein SB, Weinhold S, Manser AR, Scherenschlich N, Noll A, Raba K, Kögler G, Walter L, Uhrberg M. Umbilical cord blood-derived ILC1-like cells constitute a novel precursor for mature KIR +NKG2A - NK cells. eLife 2020; 9:55232. [PMID: 32657756 PMCID: PMC7358013 DOI: 10.7554/elife.55232] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 07/03/2020] [Indexed: 12/14/2022] Open
Abstract
Despite their identification several years ago, molecular identity and developmental relation between human ILC1 and NK cells, comprising group 1 ILCs, is still elusive. To unravel their connection, thorough transcriptional, epigenetic, and functional characterization was performed from umbilical cord blood (CB). Unexpectedly, ILC1-like cells lacked Tbet expression and failed to produce IFNγ. Moreover, in contrast to previously described ILC1 subsets they could be efficiently differentiated into NK cells. These were characterized by highly diversified KIR repertoires including late stage NKG2A-KIR+ effector cells that are commonly not generated from previously known NK cell progenitor sources. This property was dependent on stroma cell-derived Notch ligands. The frequency of the novel ILC1-like NK cell progenitor (NKP) significantly declined in CB from early to late gestational age. The study supports a model in which circulating fetal ILC1-like NKPs travel to secondary lymphoid tissues to initiate the formation of diversified NK cell repertoires after birth.
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Affiliation(s)
- Sabrina Bianca Bennstein
- Institute for Transplantation Diagnostics and Cell Therapeutics, Medical Faculty, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - Sandra Weinhold
- Institute for Transplantation Diagnostics and Cell Therapeutics, Medical Faculty, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - Angela Riccarda Manser
- Institute for Transplantation Diagnostics and Cell Therapeutics, Medical Faculty, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - Nadine Scherenschlich
- Institute for Transplantation Diagnostics and Cell Therapeutics, Medical Faculty, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - Angela Noll
- Primate Genetics Laboratory, German Primate Center, Leibnitz-Institute for Primate Research, Göttingen, Germany
| | - Katharina Raba
- Institute for Transplantation Diagnostics and Cell Therapeutics, Medical Faculty, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - Gesine Kögler
- Institute for Transplantation Diagnostics and Cell Therapeutics, Medical Faculty, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - Lutz Walter
- Primate Genetics Laboratory, German Primate Center, Leibnitz-Institute for Primate Research, Göttingen, Germany
| | - Markus Uhrberg
- Institute for Transplantation Diagnostics and Cell Therapeutics, Medical Faculty, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
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