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Adiponectin/AdipoR1 Axis Promotes IL-10 Release by Human Regulatory T Cells
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- Ramos-Ramírez, Patricia (författare)
- Gothenburg University,Göteborgs universitet,Krefting Research Centre,Institutionen för medicin, avdelningen för invärtesmedicin och klinisk nutrition,Institute of Medicine, Department of Internal Medicine and Clinical Nutrition
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- Malmhäll, Carina, 1959 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för invärtesmedicin och klinisk nutrition,Krefting Research Centre,Institute of Medicine, Department of Internal Medicine and Clinical Nutrition
- Tliba, O. (författare)
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- (creator_code:org_t)
- 2021-05-18
- 2021
- Engelska.
- Ingår i: Frontiers in Immunology. - : Frontiers Media SA. - 1664-3224. ; 12
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
Stäng
- Background Adiponectin is an important immunomodulatory mediator in inflammatory conditions. While we previously showed that adiponectin receptor 1 (AdipoR1) is expressed in murine regulatory T cells (Tregs), its expression in human Tregs remain unknown. Here, we examined the expression of AdipoR1 in human Tregs and whether its ligand, globular adiponectin (gAd) affects the Treg ability to secrete IL-10 and the role of Type 2 (T2) inflammation in such process. Methods Human Tregs from peripheral blood were analyzed by flow cytometry for AdipoR1, Helios and IL-10 expression. CD4(+) T cells enriched from peripheral blood mononuclear cells (PBMCs) were cultured in the presence or the absence of gAd or the chemical adiponectin receptor agonist, AdipoRon, or in a T2 cytokine milieu. Flow cytometry was then used to assess intracellular IL-10, IL-10 secreting cells, FOXP3 and Helios expression, and phosphorylated p38 MAP kinase (MAPK). IL-10 levels in CD4(+) T cell supernatants were quantified by ELISA. Results We found that a subset of human Tregs expressed AdipoR1. Importantly, more Helios(-) cells expressed AdipoR1 than Helios(+) cells. Likewise, there was a higher frequency of IL-10(+) cells within Helios(-) AdipoR1(+) Tregs compared to Helios(+) AdipoR1(+) Tregs. In contrast, the IL-10 mean fluorescence intensity (MFI) was higher in Helios(+) AdipoR1(+) Tregs compared to Helios(-)AdipoR1(+) Tregs. When human CD4(+) T cells were treated with gAd or AdipoRon, a significant increase in IL-10 secretion, FOXP3 expression, and p38 MAPK phosphorylation was observed in Helios(-) AdipoR1(+) Tregs. Interestingly, gAd under T2 cytokine milieu significantly increased the intracellular levels of IL-10, mainly in Helios(+) AdipoR1(+) Tregs, and IL-10 levels in supernatants of CD4(+) T cells. Conclusions Collectively, our findings suggest that adiponectin/AdipoR1 axis promotes IL-10 release by Tregs, mainly in Helios(-) Tregs, and the effect was amplified by T2 inflammation in Helios(+) Tregs.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Immunologi inom det medicinska området (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Immunology in the medical area (hsv//eng)
Nyckelord
- adiponectin receptor 1
- regulatory T cells
- interleukin-10
- adiponectin
- type 2 inflammation
- homeostasis
- receptors
- Immunology
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- ref (ämneskategori)
- art (ämneskategori)
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