Glucocorticoids regulate calcineurin-dependent trans-activating pathways for interleukin-2 gene transcription in human T lymphocytes.

Abstract:

:Glucocorticoids (GC) inhibit IL-2 gene transcription by interfering with the binding of the nuclear factor activator protein-1 on the IL-2 promoter. Calcineurin, a Ca2+/calmodulin-dependent protein phosphatase, is an essential component of the T cell antigen receptor signal transduction pathway leading to IL-2 gene transcription. Therefore, we have asked whether this phosphatase may also be regulated by GC. Jurkat T cells were cotransfected with plasmids containing the intact IL-2 promoter or its NF-AT and Oct-1 motifs, and a deletion mutant (delta CaM-AI) of calcineurin known to have Ca(2+)-independent constitutive phosphatase activity. Cotransfection of IL-2 promoter with delta CaM-AI allowed the activation of IL-2 promoter in the presence of phorbol ester alone. Under these conditions dexamethasone (Dex; 10(-6) M) inhibited IL-2 promoter activation by 50-60%. The inhibitory effect of Dex was specific, as demonstrated by experiments using an unrelated promoter (simian virus 40) and estradiol. Furthermore, it was completely reversed in the presence of excess amounts of the glucocorticoid antagonist RU 486, which suggests that it is mediated through the glucocorticoid receptor. Overexpression of calcineurin via delta CaM-AI in Jurkat cells decreased their apparent sensitivity to Dex (approximately 5-fold increase in IC50). Similar results were obtained with the NF-AT and Oct-1 constructs, which are also known to be activated by calcineurin. Thus, in addition to their known inhibitory effects on activator protein-1, GC also inhibit calcineurin-dependent pathways for T cell activation.

journal_name

Transplantation

journal_title

Transplantation

authors

Paliogianni F,Boumpas DT

subject

Has Abstract

pub_date

1995-05-15 00:00:00

pages

1333-9

issue

9

eissn

0041-1337

issn

1534-6080

journal_volume

59

pub_type

杂志文章
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  • Description of B lymphocytes and plasma cells, complement, and chemokines/receptors in acute liver allograft rejection.

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    pub_type: 杂志文章

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    authors: Krukemeyer MG,Moeller J,Morawietz L,Rudolph B,Neumann U,Theruvath T,Neuhaus P,Krenn V

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  • Renal ischemia-reperfusion induces release of angiopoietin-2 from human grafts of living and deceased donors.

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  • Should All Status 1A Patients Be Prioritized Over High MELD Patients? Concept of Risk Stratification in Extremely Ill Liver Transplant Recipients.

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    pub_type: 杂志文章

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    更新日期:2019-10-01 00:00:00

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    pub_type: 杂志文章

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    authors: Mathew JM,Carreno M,Zucker K,Fuller L,Kenyon N,Esquenazi V,Ricordi C,Tzakis AG,Miller J

    更新日期:1998-04-15 00:00:00

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    pub_type: 临床试验,杂志文章,随机对照试验

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    authors: Kirkman RL,Shapiro ME,Carpenter CB,McKay DB,Milford EL,Ramos EL,Tilney NL,Waldmann TA,Zimmerman CE,Strom TB

    更新日期:1991-01-01 00:00:00

  • Antigen-specific immunosuppression induced by liver transplantation in the rat.

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    journal_title:Transplantation

    pub_type: 杂志文章

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    authors: Kamada N,Wight DG

    更新日期:1984-09-01 00:00:00

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    authors: Nepomuceno RR,Snow AL,Robert Beatty P,Krams SM,Martinez OM

    更新日期:2002-08-15 00:00:00

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    pub_type: 杂志文章

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    更新日期:1993-10-01 00:00:00

  • Characterization of immunoreactive trypsin as a means of differentiating graft pancreatitis and allograft rejection after porcine pancreatic transplantation.

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    pub_type: 杂志文章

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  • Regression of androgen-related hepatic tumors in patients with Fanconi's anemia following marrow transplantation.

    abstract::Two patients with Fanconi's anemia treated for 5 years with oxymetholone developed hepatic function abnormalities in association with hepatic tumors demonstrated by isotope liver-spleen scan or abdominal echogram. The lesions resolved over a period of 26 months after allogeneic marrow transplantation, and the patients...

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    authors: Schmidt E,Deeg HJ,Storb R

    更新日期:1984-05-01 00:00:00

  • Results of conversion from cyclosporine to azathioprine in cadaveric renal transplantation.

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    pub_type: 杂志文章

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    authors: Gonwa TA,Nghiem DD,Schulak JA,Corry RJ

    更新日期:1987-02-01 00:00:00

  • Successful renal transplantation of patients sensitized following deliberate unrelated blood transfusions.

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    pub_type: 杂志文章

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    更新日期:1985-03-01 00:00:00

  • Prolongation of heterotropic heart allograft survival in rats by use of antigen-antibody complexes.

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    journal_title:Transplantation

    pub_type: 杂志文章

    doi:10.1097/00007890-197606000-00003

    authors: Marquet RL,Heystek GA,Tank B,van ES AA

    更新日期:1976-06-01 00:00:00

  • Rejection responses to allogeneic hepatocytes by reconstituted SCID mice, CD4, KO, and CD8 KO mice.

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    journal_title:Transplantation

    pub_type: 杂志文章

    doi:10.1097/00007890-200012270-00017

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    更新日期:2000-12-27 00:00:00

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    journal_title:Transplantation

    pub_type: 杂志文章

    doi:10.1097/00007890-199401001-00021

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    更新日期:1994-01-01 00:00:00

  • Optimal timing of administration of a free radical scavenger in lung preservation.

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    pub_type: 杂志文章

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  • Effects of steroid hormones on phytohemagglutinin-stimulated human peripheral blood lymphocytes.

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    pub_type: 杂志文章

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    更新日期:1979-05-01 00:00:00

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    pub_type: 杂志文章

    doi:10.1097/00007890-199309000-00013

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  • Effects of blood transfusions given after renal transplantation.

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    pub_type: 杂志文章

    doi:10.1097/TP.0b013e3181a24b96

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  • Does liver ischemic preconditioning in brain death donors induce kidney preconditioning? A retrospective analysis.

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    pub_type: 杂志文章

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  • Usefulness of Oxford classification in assessing immunoglobulin A nephropathy after transplantation.

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    更新日期:2004-12-15 00:00:00

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    doi:10.1097/TP.0000000000000138

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    更新日期:1992-02-01 00:00:00

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    pub_type: 杂志文章

    doi:

    authors: Sayegh MH,Perico N,Gallon L,Imberti O,Hancock WW,Remuzzi G,Carpenter CB

    更新日期:1994-07-27 00:00:00