Abstract
Many members of the BTB-ZF family have been shown to play important roles in lymphocyte development and function. The role of zinc finger Znf131 (also known as Zbtb35) in T cell lineage was elucidated through the production of mice with floxed allele to disrupt at different stages of development. In this article, we present that Znf131 is critical for T cell development during double-negative to double-positive stage, with which significant cell expansion triggered by the pre-TCR signal is coupled. In mature T cells, Znf131 is required for the activation of effector genes, as well as robust proliferation induced upon TCR signal. One of the cyclin-dependent kinase inhibitors, p21(Cip1) encoded by cdkn1a gene, is one of the targets of Znf131. The regulation of T cell proliferation by Znf131 is in part attributed to its suppression on the expression of p21(Cip1).
Copyright © 2015 by The American Association of Immunologists, Inc.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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3T3 Cells
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Animals
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Cell Differentiation / immunology
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Cell Line
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Cell Proliferation
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Cyclin-Dependent Kinase Inhibitor p21 / biosynthesis
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Cyclin-Dependent Kinase Inhibitor p21 / genetics*
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DNA-Binding Proteins / genetics
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DNA-Binding Proteins / immunology*
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Lymphocyte Activation / genetics
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Lymphocyte Activation / immunology
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Mice
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Mice, Inbred C57BL
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Mice, Transgenic
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Nuclear Proteins / immunology
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Promoter Regions, Genetic / genetics
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Protein Inhibitors of Activated STAT / immunology
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Proto-Oncogene Proteins c-myb / genetics
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Proto-Oncogene Proteins c-myb / immunology
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Receptors, Antigen, T-Cell, alpha-beta / genetics
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Receptors, Antigen, T-Cell, alpha-beta / immunology*
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T-Lymphocytes / cytology
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T-Lymphocytes / immunology*
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Transcription Factors / genetics
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Transcription Factors / immunology*
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Ubiquitin-Protein Ligases
Substances
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Cdkn1a protein, mouse
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Cyclin-Dependent Kinase Inhibitor p21
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DNA-Binding Proteins
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Nuclear Proteins
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Protein Inhibitors of Activated STAT
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Proto-Oncogene Proteins c-myb
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Receptors, Antigen, T-Cell, alpha-beta
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Transcription Factors
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ZNF131 protein, mouse
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Miz1 protein, mouse
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Ubiquitin-Protein Ligases