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  • 1
    Publication Date: 2005-01-22
    Description: Cell lineage specification depends on both gene activation and gene silencing, and in the differentiation of T helper progenitors to Th1 or Th2 effector cells, this requires the action of two opposing transcription factors, T-bet and GATA-3. T-bet is essential for the development of Th1 cells, and GATA-3 performs an equivalent role in Th2 development. We report that T-bet represses Th2 lineage commitment through tyrosine kinase-mediated interaction between the two transcription factors that interferes with the binding of GATA-3 to its target DNA. These results provide a novel function for tyrosine phosphorylation of a transcription factor in specifying alternate fates of a common progenitor cell.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hwang, Eun Sook -- Szabo, Susanne J -- Schwartzberg, Pamela L -- Glimcher, Laurie H -- AI48126/AI/NIAID NIH HHS/ -- AI56296/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2005 Jan 21;307(5708):430-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15662016" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation ; Cell Lineage ; Cytokines/pharmacology/physiology ; DNA-Binding Proteins/chemistry/genetics/*metabolism ; GATA3 Transcription Factor ; Interleukin-5/genetics ; Mice ; Mice, Inbred BALB C ; Mutation ; Phosphorylation ; Phosphotyrosine/metabolism ; Promoter Regions, Genetic ; Protein Structure, Tertiary ; Protein-Tyrosine Kinases/metabolism ; T-Box Domain Proteins ; T-Lymphocytes, Helper-Inducer/cytology/*physiology ; Th1 Cells/cytology/physiology ; Th2 Cells/cytology/*physiology ; Trans-Activators/chemistry/genetics/*metabolism ; Transcription Factors/chemistry/genetics/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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