Glucocorticoid hormone differentially modulates the in vitro expansion and cytokine profile of thymic and splenic Treg cells

Ramóna Pap, Emese Ugor, Tímea Litvai, Lilla Prenek, József Najbauer, P. Németh, Tímea Berki

Research output: Contribution to journalArticle

Abstract

Objective: Functional disturbances in regulatory T cells (Treg) have been described in autoimmune diseases, and their potential therapeutic use is intensively studied. Our goal was to investigate the influence of glucocorticoid hormone on the in vitro differentiation of Treg cells from thymic and splenic CD4+ T cells under different conditions to establish methods for generating stable and functionally suppressive iTregs for future use in adoptive transfer experiments. Methods: Thymic and splenic CD4+ T lymphocytes were isolated from 3 to 4 week-old control and in vivo dexamethasone (DX) pretreated BALB/c mice using magnetic bead negative selection, followed by CD25 positive selection. The cells were cultured with anti-CD3/CD28 beads and IL-2 in the presence or absence of TGFβ and/or DX for 3–6 days. Multiparametric flow cytometry was performed using CD4, CD25, CD8, TGFβ (LAP) cell surface and Foxp3, IL-4, IL-10, IL-17 and IFNγ intracellular staining. Quantitative RT-PCR was performed to measure IL-10, TGFβ cytokine and Foxp3 mRNA levels. Results: Differentiation of thymus-derived CD4+ cells in vitro into iTreg cells was most effective (24–25%) when anti-CD3/CD28 beads, IL-2, and TGFβ were present. Splenic CD4+ T cell expansion under same conditions resulted in a higher (44–45%) iTreg cell ratio that further increased (up to 50% Treg) in the presence of DX. Elevated immunosuppressive cytokine (IL-10 and TGFβ) production by iTregs could be measured both at protein and mRNA levels without elevation of Th1/Th2 or Th17 cytokine production. We got the highest iTreg ratio (74%) and TGFβ production when CD4+CD25+ splenic T cells were stimulated in the presence of TGFβ. In vivo 4 days DX pretreatment resulted in enhanced in vitro expansion and Foxp3 expression of thymus-derived iTregs and decreased differentiation of spleen-derived iTreg cells. In these Tregs the relative expression of IL-10 mRNA significantly decreased under all in vitro stimulation conditions, while TGFβ mRNA level did not change. Conclusion: DX promotes the expansion of thymic and splenic Treg cells, and enhances Foxp3+ expression and the production of immunosuppressive cytokines IL-10 and TGFβ in vitro. In vivo pretreatment of mice with DX inhibited the immunosuppressive cytokine production of in vitro differentiated Treg cells. We hypothesize that patients receiving GC therapy may need special attention prior to in vitro expansion and transplantation of Treg cells.

Original languageEnglish
JournalImmunobiology
DOIs
Publication statusAccepted/In press - Jan 1 2019

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Regulatory T-Lymphocytes
Glucocorticoids
Dexamethasone
Hormones
Cytokines
Interleukin-10
Immunosuppressive Agents
T-Lymphocytes
Messenger RNA
Thymus Gland
Interleukin-2
Interleukin-17
Adoptive Transfer
Therapeutic Uses
In Vitro Techniques
Interleukin-4
Autoimmune Diseases
Cultured Cells
Flow Cytometry
Spleen

Keywords

  • Dexamethasone
  • Foxp3
  • Glucocorticoid hormone
  • IL-10
  • TGFβ
  • Treg

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology
  • Hematology

Cite this

Glucocorticoid hormone differentially modulates the in vitro expansion and cytokine profile of thymic and splenic Treg cells. / Pap, Ramóna; Ugor, Emese; Litvai, Tímea; Prenek, Lilla; Najbauer, József; Németh, P.; Berki, Tímea.

In: Immunobiology, 01.01.2019.

Research output: Contribution to journalArticle

Pap, Ramóna ; Ugor, Emese ; Litvai, Tímea ; Prenek, Lilla ; Najbauer, József ; Németh, P. ; Berki, Tímea. / Glucocorticoid hormone differentially modulates the in vitro expansion and cytokine profile of thymic and splenic Treg cells. In: Immunobiology. 2019.
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abstract = "Objective: Functional disturbances in regulatory T cells (Treg) have been described in autoimmune diseases, and their potential therapeutic use is intensively studied. Our goal was to investigate the influence of glucocorticoid hormone on the in vitro differentiation of Treg cells from thymic and splenic CD4+ T cells under different conditions to establish methods for generating stable and functionally suppressive iTregs for future use in adoptive transfer experiments. Methods: Thymic and splenic CD4+ T lymphocytes were isolated from 3 to 4 week-old control and in vivo dexamethasone (DX) pretreated BALB/c mice using magnetic bead negative selection, followed by CD25 positive selection. The cells were cultured with anti-CD3/CD28 beads and IL-2 in the presence or absence of TGFβ and/or DX for 3–6 days. Multiparametric flow cytometry was performed using CD4, CD25, CD8, TGFβ (LAP) cell surface and Foxp3, IL-4, IL-10, IL-17 and IFNγ intracellular staining. Quantitative RT-PCR was performed to measure IL-10, TGFβ cytokine and Foxp3 mRNA levels. Results: Differentiation of thymus-derived CD4+ cells in vitro into iTreg cells was most effective (24–25{\%}) when anti-CD3/CD28 beads, IL-2, and TGFβ were present. Splenic CD4+ T cell expansion under same conditions resulted in a higher (44–45{\%}) iTreg cell ratio that further increased (up to 50{\%} Treg) in the presence of DX. Elevated immunosuppressive cytokine (IL-10 and TGFβ) production by iTregs could be measured both at protein and mRNA levels without elevation of Th1/Th2 or Th17 cytokine production. We got the highest iTreg ratio (74{\%}) and TGFβ production when CD4+CD25+ splenic T cells were stimulated in the presence of TGFβ. In vivo 4 days DX pretreatment resulted in enhanced in vitro expansion and Foxp3 expression of thymus-derived iTregs and decreased differentiation of spleen-derived iTreg cells. In these Tregs the relative expression of IL-10 mRNA significantly decreased under all in vitro stimulation conditions, while TGFβ mRNA level did not change. Conclusion: DX promotes the expansion of thymic and splenic Treg cells, and enhances Foxp3+ expression and the production of immunosuppressive cytokines IL-10 and TGFβ in vitro. In vivo pretreatment of mice with DX inhibited the immunosuppressive cytokine production of in vitro differentiated Treg cells. We hypothesize that patients receiving GC therapy may need special attention prior to in vitro expansion and transplantation of Treg cells.",
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T1 - Glucocorticoid hormone differentially modulates the in vitro expansion and cytokine profile of thymic and splenic Treg cells

AU - Pap, Ramóna

AU - Ugor, Emese

AU - Litvai, Tímea

AU - Prenek, Lilla

AU - Najbauer, József

AU - Németh, P.

AU - Berki, Tímea

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Objective: Functional disturbances in regulatory T cells (Treg) have been described in autoimmune diseases, and their potential therapeutic use is intensively studied. Our goal was to investigate the influence of glucocorticoid hormone on the in vitro differentiation of Treg cells from thymic and splenic CD4+ T cells under different conditions to establish methods for generating stable and functionally suppressive iTregs for future use in adoptive transfer experiments. Methods: Thymic and splenic CD4+ T lymphocytes were isolated from 3 to 4 week-old control and in vivo dexamethasone (DX) pretreated BALB/c mice using magnetic bead negative selection, followed by CD25 positive selection. The cells were cultured with anti-CD3/CD28 beads and IL-2 in the presence or absence of TGFβ and/or DX for 3–6 days. Multiparametric flow cytometry was performed using CD4, CD25, CD8, TGFβ (LAP) cell surface and Foxp3, IL-4, IL-10, IL-17 and IFNγ intracellular staining. Quantitative RT-PCR was performed to measure IL-10, TGFβ cytokine and Foxp3 mRNA levels. Results: Differentiation of thymus-derived CD4+ cells in vitro into iTreg cells was most effective (24–25%) when anti-CD3/CD28 beads, IL-2, and TGFβ were present. Splenic CD4+ T cell expansion under same conditions resulted in a higher (44–45%) iTreg cell ratio that further increased (up to 50% Treg) in the presence of DX. Elevated immunosuppressive cytokine (IL-10 and TGFβ) production by iTregs could be measured both at protein and mRNA levels without elevation of Th1/Th2 or Th17 cytokine production. We got the highest iTreg ratio (74%) and TGFβ production when CD4+CD25+ splenic T cells were stimulated in the presence of TGFβ. In vivo 4 days DX pretreatment resulted in enhanced in vitro expansion and Foxp3 expression of thymus-derived iTregs and decreased differentiation of spleen-derived iTreg cells. In these Tregs the relative expression of IL-10 mRNA significantly decreased under all in vitro stimulation conditions, while TGFβ mRNA level did not change. Conclusion: DX promotes the expansion of thymic and splenic Treg cells, and enhances Foxp3+ expression and the production of immunosuppressive cytokines IL-10 and TGFβ in vitro. In vivo pretreatment of mice with DX inhibited the immunosuppressive cytokine production of in vitro differentiated Treg cells. We hypothesize that patients receiving GC therapy may need special attention prior to in vitro expansion and transplantation of Treg cells.

AB - Objective: Functional disturbances in regulatory T cells (Treg) have been described in autoimmune diseases, and their potential therapeutic use is intensively studied. Our goal was to investigate the influence of glucocorticoid hormone on the in vitro differentiation of Treg cells from thymic and splenic CD4+ T cells under different conditions to establish methods for generating stable and functionally suppressive iTregs for future use in adoptive transfer experiments. Methods: Thymic and splenic CD4+ T lymphocytes were isolated from 3 to 4 week-old control and in vivo dexamethasone (DX) pretreated BALB/c mice using magnetic bead negative selection, followed by CD25 positive selection. The cells were cultured with anti-CD3/CD28 beads and IL-2 in the presence or absence of TGFβ and/or DX for 3–6 days. Multiparametric flow cytometry was performed using CD4, CD25, CD8, TGFβ (LAP) cell surface and Foxp3, IL-4, IL-10, IL-17 and IFNγ intracellular staining. Quantitative RT-PCR was performed to measure IL-10, TGFβ cytokine and Foxp3 mRNA levels. Results: Differentiation of thymus-derived CD4+ cells in vitro into iTreg cells was most effective (24–25%) when anti-CD3/CD28 beads, IL-2, and TGFβ were present. Splenic CD4+ T cell expansion under same conditions resulted in a higher (44–45%) iTreg cell ratio that further increased (up to 50% Treg) in the presence of DX. Elevated immunosuppressive cytokine (IL-10 and TGFβ) production by iTregs could be measured both at protein and mRNA levels without elevation of Th1/Th2 or Th17 cytokine production. We got the highest iTreg ratio (74%) and TGFβ production when CD4+CD25+ splenic T cells were stimulated in the presence of TGFβ. In vivo 4 days DX pretreatment resulted in enhanced in vitro expansion and Foxp3 expression of thymus-derived iTregs and decreased differentiation of spleen-derived iTreg cells. In these Tregs the relative expression of IL-10 mRNA significantly decreased under all in vitro stimulation conditions, while TGFβ mRNA level did not change. Conclusion: DX promotes the expansion of thymic and splenic Treg cells, and enhances Foxp3+ expression and the production of immunosuppressive cytokines IL-10 and TGFβ in vitro. In vivo pretreatment of mice with DX inhibited the immunosuppressive cytokine production of in vitro differentiated Treg cells. We hypothesize that patients receiving GC therapy may need special attention prior to in vitro expansion and transplantation of Treg cells.

KW - Dexamethasone

KW - Foxp3

KW - Glucocorticoid hormone

KW - IL-10

KW - TGFβ

KW - Treg

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