Journal
JOURNAL OF LEUKOCYTE BIOLOGY
Volume 105, Issue 6, Pages 1341-1354Publisher
WILEY
DOI: 10.1002/JLB.MA0718-296R
Keywords
NK cell; survival; proliferation; quantification; cytokines; checkpoints; culture; stimulation; homeostasis; etc
Categories
Funding
- National Health and Medical Research Council (NHMRC) of Australia [1124784, 1066770, 1057852, 1124907, 1010654]
- Melanoma Research Grant from the Harry J Lloyd Charitable Trust [1124788]
- Melanoma Research Alliance Young Investigator Award [1124788]
- CLIP grant from Cancer Research Institute [1124788]
- National Health and Medical Research Council of Australia [1124784, 1124907, 1057852, 1066770] Funding Source: NHMRC
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NK cells are innate lymphocytes critical for immune surveillance, particularly in eradication of metastatic cancer cells and acute antiviral responses. In contrast to T cells, NK cell-mediated immunity is rapid, with spontaneous cytotoxicity and cytokine/chemokine production upon pathogen detection. The renaissance in cancer immunology has cast NK cell biology back into the spotlight with an urgent need for deeper understanding of the regulatory networks that govern NK cell antitumor activity. To this end, we have adapted and refined a series of quantitative cellular calculus methods, previously applied to T and B lymphocytes, to dissect the biologic outcomes of NK cells following stimulation with cytokines (IL-15, IL-12, IL-18) or deletion of genes that regulate NK cell proliferation (Cish), survival (Bcl2l11), and activation-induced-cell-death (AICD; Fas). Our methodology is well suited to delineate effects on division rate, intrinsic apoptosis, and AICD, permitting variables such as population half-life, rate of cell division, and their combined influence on population numbers in response to stimuli to be accurately measured and modelled. Changes in these variables that result from gene deletion, concentration of stimuli, time, and cell density give insight into the dynamics of NK cell responses and serve as a platform to dissect the mechanism of action of putative checkpoints in NK cell activation and novel NK cell immunotherapy agents.
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