Transcriptomics

Dataset Information

2

Transcription profiling of human Sez-4 cell line starved of IL2 for 16h, followed by addition of IL-2 activation and or JAK inhibition


ABSTRACT: In this study we compared the effects of IL-2, IL-15, and IL-21 on the gene expression, activation of cell signaling pathways, and functional properties of cells derived from the CD4+ cutaneous T-cell lymphoma (CTCL). Whereas both IL-2 and IL-15 that signal through receptors that share the common gamma chain and the beta chain modulated the expression of >1,000 genes, IL-21 that signals via the receptor also containing gamma chain up-regulated <40 genes. All three cytokines induced tyrosine phosphorylation of Jak1 and Jak3. However, only IL-2 and IL-15 strongly activated STAT5, PI3K/Akt, and MEK/ERK signaling pathways. In contrast, IL-21 selectively activated STAT3. Whereas all three cytokines protected CTCL cells from apoptosis, only IL-2 and IL-15 promoted their proliferation. The effects of the cytokine stimulation were Jak3- and Jak1-kinase dependent. These findings document the vastly different impact of IL-2 and IL-15 vs. IL-21 on malignant CD4+ T cells. They also suggest two novel therapeutic approaches to CTCL and, possibly, other CD4+ T cell lymphomas: inhibition of the Jak1/Jak3 kinase complex and, given the known strong immunostimulatory properties of IL-21 on CD8+ T, NK, and B cells, application of this cytokine to boost an immune response against malignant CD4+ T cells. Experiment Overall Design: Sez-4 cell line was starved of IL-2 for 16h, washed twice and placed into 6-well plates in 10ml RPMI (10% FBS) for 2h followed by pre-treating for 30â?? with pan-Jak inhibitor (300 nM), Jak3 inhibitor (300 nM), or drig solvent and cultured with IL-2 (200U) or medium alone for 4 h.

INSTRUMENT(S): 418 [Affymetrix]

ORGANISM(S): Homo sapiens  

SUBMITTER: Mariusz Wasik 

PROVIDER: E-GEOD-8687 | ArrayExpress | 2008-04-09

SECONDARY ACCESSION(S): GSE8687PRJNA101903

REPOSITORIES: GEO, ArrayExpress

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