Differentiation of ICOS+ and ICOS- recent thymic emigrant regulatory T cells (RTE Tregs) during normal pregnancy, pre-eclampsia and HELLP syndrome

Two different subsets of naturally occurring regulatory T cells (nTregs), defined by their expression of the inducible co-stimulatory (ICOS) molecule, are produced by the human thymus. To examine the differentiation of ICOS+ and ICOS−CD45RA+CD31+ recent thymic emigrant (RTE) Tregs during normal preg...

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Hauptverfasser: Wagner, Miriam (VerfasserIn) , Jöst, Maria (VerfasserIn) , Spratte, Julia (VerfasserIn) , Schaier, Matthias (VerfasserIn) , Mahnke, Karsten (VerfasserIn) , Meuer, Stefan (VerfasserIn) , Zeier, Martin (VerfasserIn) , Steinborn-Kröhl, Andrea (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: [2016]
In: Clinical & experimental immunology
Year: 2015, Jahrgang: 183, Heft: 1, Pages: 129-142
ISSN:1365-2249
DOI:10.1111/cei.12693
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1111/cei.12693
Verlag, lizenzpflichtig, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1111/cei.12693
Volltext
Verfasserangaben:M. I. Wagner, M. Jöst, J. Spratte, M. Schaier, K. Mahnke, S. Meuer, M. Zeier and A. Steinborn

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245 1 0 |a Differentiation of ICOS+ and ICOS- recent thymic emigrant regulatory T cells (RTE Tregs) during normal pregnancy, pre-eclampsia and HELLP syndrome  |c M. I. Wagner, M. Jöst, J. Spratte, M. Schaier, K. Mahnke, S. Meuer, M. Zeier and A. Steinborn 
246 3 3 |a Differentiation of ICOS + and ICOS - recent thymic emigrant regulatory T cells (RTE T regs) during normal pregnancy, pre-eclampsia and HELLP syndrome 
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500 |a Gesehen am 05.06.2020 
520 |a Two different subsets of naturally occurring regulatory T cells (nTregs), defined by their expression of the inducible co-stimulatory (ICOS) molecule, are produced by the human thymus. To examine the differentiation of ICOS+ and ICOS−CD45RA+CD31+ recent thymic emigrant (RTE) Tregs during normal pregnancy and in the presence of pre-eclampsia or haemolysis elevated liver enzymes low platelet (HELLP)-syndrome, we used six-colour flow cytometric analysis to determine the changes in the composition of the ICOS+ and ICOS− Treg pools with CD45RA+CD31+ RTE Tregs, CD45RA+CD31− mature naive (MN) Tregs, CD45RA−CD31+ and CD45RA−CD31− memory Tregs. With the beginning of pregnancy until term, we observed a strong differentiation of both ICOS+ and ICOS−CD45RA+CD31+ RTE, but not CD45RA+CD31− MN Tregs, into CD45RA−CD31− memory Tregs. At the end of pregnancy, the onset of spontaneous term labour was associated with a significant breakdown of ICOS+CD45RA−CD31− memory Tregs. However, in the presence of pre-eclampsia, there was a significantly increased differentiation of ICOS+ and ICOS−CD45RA+CD31+ RTE Tregs into CD45RA−CD31+ memory Tregs, wherein the lacking differentiation into CD45RA−CD31− memory Tregs was partially replaced by the increased differentiation of ICOS+ and ICOS−CD45RA+CD31− MN Tregs into CD45RA−CD31− memory Tregs. In patients with HELLP syndrome, this alternatively increased differentiation of CD45RA−CD31− MN Tregs seemed to be exaggerated, and presumably restored the suppressive activity of magnetically isolated ICOS+ and ICOS− Tregs, which were shown to be significantly less suppressive in pre-eclampsia patients, but not in HELLP syndrome patients. Hence, our findings propose that the regular differentiation of both ICOS+ and ICOS−CD45RA+CD31+ RTE Tregs ensures a healthy pregnancy course, while their disturbed differentiation is associated with the occurrence of pre-eclampsia and HELLP syndrome. 
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650 4 |a HELLP syndrome 
650 4 |a ICOS+ and ICOS− Tregs 
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