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CD46 Activation Regulates miR-150-Mediated Control of GLUT1 Expression and Cytokine Secretion in Human CD4+ T Cells.

King, Ben LU ; Esguerra, Jonathan LU ; Golec, Ewelina LU ; Eliasson, Lena LU ; Kemper, Claudia and Blom, Anna LU (2016) In Journal of immunology (Baltimore, Md. : 1950) 196(4). p.1636-1645
Abstract
CD46 is a cell surface complement inhibitor widely expressed in human tissues, in contrast to mice, where expression is limited to the testes. In humans, it has been identified as an important T cell costimulatory receptor, and patients deficient in CD46 or its endogenous ligands are unable to mount effective Th1 T cell responses. Stimulation of human CD4(+) T cells with CD3 and CD46 also leads to the differentiation of a "switched" Th1 population, which shuts down IFN-γ secretion and upregulates IL-10 and is thought to be important for negative feedback regulation of the Th1 response. In the present study, we show that CD46 costimulation leads to amplified microRNA (miR) expression changes in human CD4(+) T cells, with associated... (More)
CD46 is a cell surface complement inhibitor widely expressed in human tissues, in contrast to mice, where expression is limited to the testes. In humans, it has been identified as an important T cell costimulatory receptor, and patients deficient in CD46 or its endogenous ligands are unable to mount effective Th1 T cell responses. Stimulation of human CD4(+) T cells with CD3 and CD46 also leads to the differentiation of a "switched" Th1 population, which shuts down IFN-γ secretion and upregulates IL-10 and is thought to be important for negative feedback regulation of the Th1 response. In the present study, we show that CD46 costimulation leads to amplified microRNA (miR) expression changes in human CD4(+) T cells, with associated increases in activation more potent than those mediated by the "classic" costimulator CD28. Blockade of cell surface CD46 inhibited CD28-mediated costimulation, identifying autocrine CD46 signaling as downstream of CD28. We also identify a downregulation of miR-150 in CD46-costimulated T cells and identify the glucose transporter 1 encoding transcript SLC2A1 as a target of miR-150 regulation, connecting miR-150 with modulation of glucose uptake. We also investigated microRNA expression profiles of CD46-induced switched IL-10-secreting Th1 T cells and found increased expression of miR-150, compared with IFN-γ-secreting Th1 cells. Knockdown of miR-150 led to a reduction in IL-10 but not IFN-γ. CD46 therefore controls both Th1 activation and regulation via a miR-150-dependent mechanism. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of immunology (Baltimore, Md. : 1950)
volume
196
issue
4
pages
1636 - 1645
publisher
American Association of Immunologists
external identifiers
  • PMID:26746193
  • Scopus:84958582282
  • WOS:000369632300022
ISSN
1550-6606
DOI
10.4049/jimmunol.1500516
language
English
LU publication?
yes
id
91e8a9a0-bd5b-42f1-8fef-3cb348341832 (old id 8592608)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/26746193?dopt=Abstract
date added to LUP
2016-02-02 09:58:02
date last changed
2016-11-01 10:16:40
@misc{91e8a9a0-bd5b-42f1-8fef-3cb348341832,
  abstract     = {CD46 is a cell surface complement inhibitor widely expressed in human tissues, in contrast to mice, where expression is limited to the testes. In humans, it has been identified as an important T cell costimulatory receptor, and patients deficient in CD46 or its endogenous ligands are unable to mount effective Th1 T cell responses. Stimulation of human CD4(+) T cells with CD3 and CD46 also leads to the differentiation of a "switched" Th1 population, which shuts down IFN-γ secretion and upregulates IL-10 and is thought to be important for negative feedback regulation of the Th1 response. In the present study, we show that CD46 costimulation leads to amplified microRNA (miR) expression changes in human CD4(+) T cells, with associated increases in activation more potent than those mediated by the "classic" costimulator CD28. Blockade of cell surface CD46 inhibited CD28-mediated costimulation, identifying autocrine CD46 signaling as downstream of CD28. We also identify a downregulation of miR-150 in CD46-costimulated T cells and identify the glucose transporter 1 encoding transcript SLC2A1 as a target of miR-150 regulation, connecting miR-150 with modulation of glucose uptake. We also investigated microRNA expression profiles of CD46-induced switched IL-10-secreting Th1 T cells and found increased expression of miR-150, compared with IFN-γ-secreting Th1 cells. Knockdown of miR-150 led to a reduction in IL-10 but not IFN-γ. CD46 therefore controls both Th1 activation and regulation via a miR-150-dependent mechanism.},
  author       = {King, Ben and Esguerra, Jonathan and Golec, Ewelina and Eliasson, Lena and Kemper, Claudia and Blom, Anna},
  issn         = {1550-6606},
  language     = {eng},
  month        = {01},
  number       = {4},
  pages        = {1636--1645},
  publisher    = {ARRAY(0xa3eb1c8)},
  series       = {Journal of immunology (Baltimore, Md. : 1950)},
  title        = {CD46 Activation Regulates miR-150-Mediated Control of GLUT1 Expression and Cytokine Secretion in Human CD4+ T Cells.},
  url          = {http://dx.doi.org/10.4049/jimmunol.1500516},
  volume       = {196},
  year         = {2016},
}