IL-2 and TGF-b1 promote regulatory activity in NK cells following Hematopoietic Stem Cell Transplantation
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ABSTRACT: Natural Killer(NK) cell activity is influenced by cytokines and microenvironment factors, resulting in remarkably diverse functions ranging from contributing to inflammatory responses to instead inhibiting T cell and B cell activity, thereby serving as rheostats of adaptive immunity. Using scRNAseq, we identified a TGFb1highCD56brightNK cell population associated with protection from acute Graft-versus-Host Disease. We further define a role for the combination of IL-2 and TGF-b in promoting NK cells to acquire a regulatory phenotype. ‘Induced’ regulatory NK cells produce high amounts of TGF-b1, inhibited T cells, could promote naïve T cells differentiation into regulatory T cells, and exhibited a unique transcriptional program that includes expression of IKZF2(HELIOS) and ZNF683(HOBIT). This phenotype was not stable, and induced regulatory NK cells lost the ability to secrete TGF-b1 upon exposure to different cytokines. These findings define protective CD56brightNK cells in Hematopoietic Stem Cell Transplant, and support IL-2 and TGF-b1 promote regulatory NK cells.
ORGANISM(S): Homo sapiens
PROVIDER: GSE255298 | GEO | 2024/11/12
REPOSITORIES: GEO
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