DGK α and ζ Activities Control TH1 and TH17 Cell Differentiation
CD4 + T helper (T H ) cells are critical for protective adaptive immunity against pathogens, and they also contribute to the pathogenesis of autoimmune diseases. How T H differentiation is regulated by the TCR's downstream signaling is still poorly understood. We describe here that diacylglycer...
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Published in | Frontiers in immunology Vol. 10; p. 3048 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Frontiers Media S.A
15.01.2020
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Subjects | |
Online Access | Get full text |
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Summary: | CD4
+
T helper (T
H
) cells are critical for protective adaptive immunity against pathogens, and they also contribute to the pathogenesis of autoimmune diseases. How T
H
differentiation is regulated by the TCR's downstream signaling is still poorly understood. We describe here that diacylglycerol kinases (DGKs), which are enzymes that convert diacylglycerol (DAG) to phosphatidic acid, exert differential effects on T
H
cell differentiation in a DGK dosage-dependent manner. A deficiency of either DGKα or ζ selectively impaired T
H
1 differentiation without obviously affecting T
H
2 and T
H
17 differentiation. However, simultaneous ablation of both DGKα and ζ promoted T
H
1 and T
H
17 differentiation
in vitro
and
in vivo
, leading to exacerbated airway inflammation. Furthermore, we demonstrate that dysregulation of T
H
17 differentiation of DGKα and ζ double-deficient CD4
+
T cells was, at least in part, caused by increased mTOR complex 1/S6K1 signaling. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 Edited by: Hongbo Chi, St. Jude Children's Research Hospital, United States Reviewed by: Xuexian Yang, University of New Mexico, United States; Greg M. Delgoffe, University of Pittsburgh, United States This article was submitted to T Cell Biology, a section of the journal Frontiers in Immunology |
ISSN: | 1664-3224 1664-3224 |
DOI: | 10.3389/fimmu.2019.03048 |