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Analysis of Interleukin-21-induced Prdm1 Gene Regulation Reveals Functional Cooperation of STAT3 and IRF4 Transcription Factors

Abstract

Interleukin-21 (IL-21) is a pleiotropic cytokine that induces expression of transcription factor BLIMP1 (encoded by Prdm1), which regulates plasma cell differentiation and T cell homeostasis. We identified an IL-21 response element downstream of Prdm1 that binds the transcription factors STAT3 and IRF4, which are required for optimal Prdm1 expression. Genome-wide ChIP-Seq mapping of STAT3- and IRF4-binding sites showed that most regions with IL-21-induced STAT3 binding also bound IRF4 in vivo and furthermore revealed that the noncanonical TTCnnnTAA GAS motif critical in Prdm1 was broadly used for STAT3 binding. Comparing genome-wide expression array data to binding sites revealed that most IL-21-regulated genes were associated with combined STAT3-IRF4 sites rather than pure STAT3 sites. Correspondingly, ChIP-Seq analysis of Irf4(-/-) T cells showed greatly diminished STAT3 binding after IL-21 treatment, and Irf4(-/-) mice showed impaired IL-21-induced Tfh cell differentiation in vivo. These results reveal broad cooperative gene regulation by STAT3 and IRF4.

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References
1.
Huber M, Brustle A, Reinhard K, Guralnik A, Walter G, Mahiny A . IRF4 is essential for IL-21-mediated induction, amplification, and stabilization of the Th17 phenotype. Proc Natl Acad Sci U S A. 2008; 105(52):20846-51. PMC: 2634912. DOI: 10.1073/pnas.0809077106. View

2.
Turner Jr C, Mack D, Davis M . Blimp-1, a novel zinc finger-containing protein that can drive the maturation of B lymphocytes into immunoglobulin-secreting cells. Cell. 1994; 77(2):297-306. DOI: 10.1016/0092-8674(94)90321-2. View

3.
Ozaki K, Spolski R, Feng C, Qi C, Cheng J, Sher A . A critical role for IL-21 in regulating immunoglobulin production. Science. 2002; 298(5598):1630-4. DOI: 10.1126/science.1077002. View

4.
Ozaki K, Kikly K, Michalovich D, Young P, Leonard W . Cloning of a type I cytokine receptor most related to the IL-2 receptor beta chain. Proc Natl Acad Sci U S A. 2000; 97(21):11439-44. PMC: 17218. DOI: 10.1073/pnas.200360997. View

5.
Shaffer A, Yu X, He Y, Boldrick J, Chan E, Staudt L . BCL-6 represses genes that function in lymphocyte differentiation, inflammation, and cell cycle control. Immunity. 2000; 13(2):199-212. DOI: 10.1016/s1074-7613(00)00020-0. View