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Gα12 is critical for TCR-induced IL-2 production and differentiation of T helper 2 and T helper 17 cells
- Title
- Gα12 is critical for TCR-induced IL-2 production and differentiation of T helper 2 and T helper 17 cells
- Authors
- Won H.Y.; Min H.J.; Lee W.H.; Kim S.G.; Hwang E.S.
- Ewha Authors
- 황은숙
- SCOPUS Author ID
- 황은숙
- Issue Date
- 2010
- Journal Title
- Biochemical and Biophysical Research Communications
- ISSN
- 0006-291X
- Citation
- Biochemical and Biophysical Research Communications vol. 394, no. 3, pp. 811 - 816
- Indexed
- SCI; SCIE; SCOPUS
- Document Type
- Article
- Abstract
- G12 family have been known to modulate a variety of cellular events such as cell migration, B cell activation and maturation, cytokine production, and cell differentiation. In particular, Gα12 modulates IgG production, thus induces IgG antibody-mediated immune responses. However, it is largely unknown whether Gα12 is required for T cell-mediated immune functions. In this study, we investigated the effects of Gα12 in the activation and differentiation of CD4+ T cells. While PMA plus ionomycin induced equal levels of IL-2 production in WT and Gα12-deficient lymphocytes, TCR-triggered IL-2 production was significantly attenuated in Gα12 KO lymphocytes. In particular, CD4+ T cells and effector Th cells lacking of Gα12 revealed diminished IL-2 production, but not IFNγ production, upon TCR stimulation. In addition, supplement of IL-2 preferentially induced Gα12-deficient CD4+ T cells into Th2 and Th17 cells; however, the expression of specific transcription factors was unchanged in Gα12 KO Th cells. While IL-2 expression was still diminished by the re-stimulation with anti-CD3, PMA plus ionomycin restored IL-2 production in Gα12-deficient Th1 and Th2 cells. These results suggest that Gα12 may be a critical signaling molecule in TCR-induced IL-2 production and also relay a signal to suppress Th2 and Th17 cell differentiation. © 2010 Elsevier Inc. All rights reserved.
- DOI
- 10.1016/j.bbrc.2010.03.079
- Appears in Collections:
- 약학대학 > 약학과 > Journal papers
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