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Citations to this article

Striking a balance: the Goldilocks effect of CD8α expression on NK cells
Paarth B. Dodhiawala, Frank Cichocki
Paarth B. Dodhiawala, Frank Cichocki
Published August 1, 2024
Citation Information: J Clin Invest. 2024;134(15):e182905. https://doi.org/10.1172/JCI182905.
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Striking a balance: the Goldilocks effect of CD8α expression on NK cells

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Abstract

NK cells are cytotoxic innate immune cells involved in antitumor immunity, and they provide a treatment option for patients with acute myeloid leukemia (AML). In this issue of the JCI, Cubitt et al. investigated the role of CD8α, a coreceptor present on approximately 40% of human NK cells. IL-15 stimulation of CD8α– NK cells induced CD8α expression via the RUNX3 transcription factor, driving formation of a unique induced CD8α (iCD8α+) population. iCD8α+ NK cells displayed higher proliferation, metabolic activity, and antitumor cytotoxic function compared with preexisting CD8α+ and CD8α– subsets. Therefore, CD8α expression can be used to define a potential dynamic spectrum of NK cell expansion and function. Because these cells exhibit enhanced tumor control, they may be used to improve in NK cell therapies for patients with AML.

Authors

Paarth B. Dodhiawala, Frank Cichocki

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