Hypercholesterolemia Enhances T Cell Receptor Signaling and Increases the Regulatory T Cell Population
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Hypercholesterolemia Enhances T Cell Receptor Signaling and Increases the Regulatory T Cell Population. / Mailer, Reiner K W; Gisterå, Anton; Polyzos, Konstantinos A; Ketelhuth, Daniel F J; Hansson, Göran K.
In: SCI REP-UK, Vol. 7, No. 1, 15.11.2017, p. 15655.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Hypercholesterolemia Enhances T Cell Receptor Signaling and Increases the Regulatory T Cell Population
AU - Mailer, Reiner K W
AU - Gisterå, Anton
AU - Polyzos, Konstantinos A
AU - Ketelhuth, Daniel F J
AU - Hansson, Göran K
PY - 2017/11/15
Y1 - 2017/11/15
N2 - Hypercholesterolemia promotes the inflammation against lipoproteins in atherosclerosis. Development of atherosclerosis is affected by the balance between pro-inflammatory effector T cells and anti-inflammatory regulatory T (Treg) cells. However, phenotype and function of T cell subpopulations in hypercholesterolemia remain to be investigated. Here, we found that cholesterol-containing diet increased the expression of the Treg cell lineage-defining transcription factor FoxP3 among thymocytes and splenocytes. Hypercholesterolemia elevated the FoxP3 expression level and population size of peripheral Treg cells, but did not prevent enhanced proliferation of stimulated T cells. Moreover, cholesterol supplementation in diet as well as in cell culture medium promoted T cell antigen receptor (TCR) signaling in CD4+ T cells. Our results demonstrate that hypercholesterolemia enhances TCR stimulation, Treg cell development as well as T cell proliferation. Thus, our findings may help to understand why hypercholesterolemia correlates with altered CD4+ T cell responses.
AB - Hypercholesterolemia promotes the inflammation against lipoproteins in atherosclerosis. Development of atherosclerosis is affected by the balance between pro-inflammatory effector T cells and anti-inflammatory regulatory T (Treg) cells. However, phenotype and function of T cell subpopulations in hypercholesterolemia remain to be investigated. Here, we found that cholesterol-containing diet increased the expression of the Treg cell lineage-defining transcription factor FoxP3 among thymocytes and splenocytes. Hypercholesterolemia elevated the FoxP3 expression level and population size of peripheral Treg cells, but did not prevent enhanced proliferation of stimulated T cells. Moreover, cholesterol supplementation in diet as well as in cell culture medium promoted T cell antigen receptor (TCR) signaling in CD4+ T cells. Our results demonstrate that hypercholesterolemia enhances TCR stimulation, Treg cell development as well as T cell proliferation. Thus, our findings may help to understand why hypercholesterolemia correlates with altered CD4+ T cell responses.
KW - Journal Article
U2 - 10.1038/s41598-017-15546-8
DO - 10.1038/s41598-017-15546-8
M3 - SCORING: Journal article
C2 - 29142309
VL - 7
SP - 15655
JO - SCI REP-UK
JF - SCI REP-UK
SN - 2045-2322
IS - 1
ER -