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Yin-Yang 1 regulates effector cytokine gene expression and T(H)2 immune responses.


ABSTRACT: BACKGROUND:The transcription factor Yin-Yang 1 (YY-1) binds to the promoter regions of several T-cell cytokine genes, but the expression and contribution of this factor to cytokine gene expression and T-cell activation in vivo is not clear. OBJECTIVE:We sought to better define the role of YY-1 in T-cell gene regulation and allergic immune responses. METHODS:We studied cytokine gene expression in T lymphocytes isolated from wild-type mice and heterozygous littermates bearing 1 targeted yy-1 allele (yy-1(+/-) mice). T cells were stimulated with anti-T-cell receptor (anti-TCR) plus CD28 antibodies or with peptide antigen plus antigen-presenting cells by using newly generated yy-1(+/-) TCR transgenic mice. We also studied ovalbumin-driven allergic immune responses in a mouse model of asthma and YY-1 expression in lung tissue from human asthmatic subjects. RESULTS:CD4(+) T cells from yy-1(+/-) mice secreted significantly less IL-4 and IFN-gamma compared with wild-type littermates after TCR-dependent activation, whereas IL-2 production was not significantly affected. Both airway inflammation and recall splenocyte IL-4 production were inhibited in yy-1(+/-) mice, as was antigen-driven T-cell proliferation. YY-1 expression was higher in airway biopsy specimens from asthmatic compared with control subjects. CONCLUSION:These data indicate that YY-1 regulates T-cell cytokine gene expression and allergic immune responses in a gene dose-dependent manner.

SUBMITTER: Guo J 

PROVIDER: S-EPMC7065358 | biostudies-literature | 2008 Jul

REPOSITORIES: biostudies-literature

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Yin-Yang 1 regulates effector cytokine gene expression and T(H)2 immune responses.

Guo Jia J   Lin Xin X   Williams Marc A MA   Hamid Qutayba Q   Georas Steve N SN  

The Journal of allergy and clinical immunology 20080418 1


<h4>Background</h4>The transcription factor Yin-Yang 1 (YY-1) binds to the promoter regions of several T-cell cytokine genes, but the expression and contribution of this factor to cytokine gene expression and T-cell activation in vivo is not clear.<h4>Objective</h4>We sought to better define the role of YY-1 in T-cell gene regulation and allergic immune responses.<h4>Methods</h4>We studied cytokine gene expression in T lymphocytes isolated from wild-type mice and heterozygous littermates bearing  ...[more]

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