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NF-κB c-Rel Is Dispensable for the Development but Is Required for the Cytotoxic Function of NK Cells
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NF-κB c-Rel Is Dispensable for the Development but Is Required for the Cytotoxic Function of NK Cells
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Journal Article
NF-κB c-Rel Is Dispensable for the Development but Is Required for the Cytotoxic Function of NK Cells
2021
Overview
Natural Killer (NK) cells are cytotoxic lymphocytes critical to the innate immune system. We found that germline deficiency of NF-κB c-Rel results in a marked decrease in cytotoxic function of NK cells, both in vitro and in vivo , with no significant differences in the stages of NK cell development. We found that c-Rel binds to the promoters of perforin and granzyme B, two key proteins required for NK cytotoxicity, and controls their expression. We generated a NK cell specific c-Rel conditional knockout to study NK cell intrinsic role of c- Rel and found that both global and conditional c-Rel deficiency leads to decreased perforin and granzyme B expression and thereby cytotoxic function. We also confirmed the role of c-Rel in perforin and granzyme B expression in human NK cells. c-Rel reconstitution rescued perforin and granzyme B expressions in c-Rel deficient NK cells and restored their cytotoxic function. Our results show a previously unknown role of c-Rel in transcriptional regulation of perforin and granzyme B expressions and control of NK cell cytotoxic function.
Publisher
Frontiers Media SA,Frontiers Media S.A
Subject
/ Cancer
/ Cytotoxicity, Immunologic - genetics
/ granzyme
/ Humans
/ Killer Cells, Natural - immunology
/ Killer Cells, Natural - metabolism
/ Leukemia
/ Melanoma
/ Mice
/ NK cell
/ Perforin
/ Pore Forming Cytotoxic Proteins - genetics
/ Pore Forming Cytotoxic Proteins - metabolism
