Title : Involvement of Blimp-1 and AP-1 dysregulation in the 2,3,7,8-Tetrachlorodibenzo-p-dioxin-mediated suppression of the IgM response by B cells.

Pub. Date : 2009 Apr

PMID : 19237549






6 Functional Relationships(s)
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1 Involvement of Blimp-1 and AP-1 dysregulation in the 2,3,7,8-Tetrachlorodibenzo-p-dioxin-mediated suppression of the IgM response by B cells. Polychlorinated Dibenzodioxins PR domain containing 1, with ZNF domain Mus musculus
2 In lipopolysaccharide (LPS)-activated murine B cell lymphoma, CH12.LX, Blimp-1 messenger RNA, and DNA-binding activity within the Pax5 promoter were suppressed by TCDD. Polychlorinated Dibenzodioxins PR domain containing 1, with ZNF domain Mus musculus
3 TCDD treatment of LPS-activated CH12.LX cells suppressed AP-1 binding to these motifs between 24 and 72 h, in concordance with the suppression of Blimp-1 by TCDD. Polychlorinated Dibenzodioxins PR domain containing 1, with ZNF domain Mus musculus
4 TCDD treatment of LPS-activated CH12.LX cells suppressed AP-1 binding to these motifs between 24 and 72 h, in concordance with the suppression of Blimp-1 by TCDD. Polychlorinated Dibenzodioxins PR domain containing 1, with ZNF domain Mus musculus
5 A more comprehensive analysis at 72 h demonstrated that the suppression of AP-1 binding within the Blimp-1 promoter by TCDD was concentration dependent. Polychlorinated Dibenzodioxins PR domain containing 1, with ZNF domain Mus musculus
6 In summary, our findings link the TCDD-mediated suppression of Blimp-1 through AP-1 to the dysregulation of Pax5, which ultimately leads to the suppression of B cell differentiation and humoral immune responses. Polychlorinated Dibenzodioxins PR domain containing 1, with ZNF domain Mus musculus