Correlation Engine 2.0
Clear Search sequence regions

Sizes of these terms reflect their relevance to your search.

Human NK cells develop in tonsils through discrete NK cell developmental intermediates (NKDIs), yet the mechanistic regulation of this process is unclear. We demonstrate that Notch activation in human tonsil-derived stage 3 (CD34-CD117+CD94-NKp80-) and 4A (CD34-CD117+/-CD94+NKp80-) NKDIs promoted non-NK innate lymphoid cell differentiation at the expense of NK cell differentiation. In contrast, stage 4B (CD34-CD117+/-CD94+NKp80+) NKDIs were NK cell lineage committed despite Notch activation. Interestingly, whereas NK cell functional maturation from stage 3 and 4A NKDIs was independent of Notch activation, the latter was required for high NKp80 expression and a stage 4B-like phenotype by the NKDI-derived NK cells. The Notch-dependent effects required simultaneous engagement with OP9 stromal cells and were also stage-specific, with NOTCH1 and NOTCH2 receptors regulating stage 3 NKDIs and NOTCH1 primarily regulating stage 4A NKDIs. These data establish stage-specific and stromal-dependent roles for Notch in regulating human NK cell developmental plasticity and maturation. Copyright © 2020 by The American Association of Immunologists, Inc.


Ansel P Nalin, Jesse J Kowalski, Alexander C Sprague, Blaire K Schumacher, Adam G Gerhardt, Youssef Youssef, Kiran V Vedantam, Xiaoli Zhang, Christian W Siebel, Emily M Mace, Michael A Caligiuri, Bethany L Mundy-Bosse, Aharon G Freud. Notch Regulates Innate Lymphoid Cell Plasticity during Human NK Cell Development. Journal of immunology (Baltimore, Md. : 1950). 2020 Nov 15;205(10):2679-2693

Expand section icon Mesh Tags

Expand section icon Substances

PMID: 33020148

View Full Text