Abstract
Natural killer (NK) and NK T cells are tissue lymphocytes that secrete cytokines rapidly upon stimulation. Here, we show that these cells maintain distinct patterns of constitutive cytokine mRNAs. Unlike conventional T cells, NK T cells activate interleukin (IL)-4 and interferon (IFN)-gamma transcription during thymic development and populate the periphery with both cytokine loci previously modified by histone acetylation. Similarly, NK cells transcribe and modify the IFN-gamma gene, but not IL-4, during developmental maturation in the bone marrow. Lineage-specific patterns of cytokine transcripts predate infection and suggest evolutionary selection for invariant but distinct types of effector responses among the earliest responding lymphocytes.
MeSH Terms
Animals
Chromatin/metabolism
Fluorescence
Interferon-gamma/genetics
Interleukin-4/genetics
Killer Cells, Natural/immunology,physiology
Mice
Mice, Inbred C57BL
Promoter Regions, Genetic
RNA, Messenger/analysis
T-Lymphocytes/immunology,physiology
Transcription, Genetic
Chemicals
Chromatin
RNA, Messenger
Interleukin-4
Interferon-gamma
Authors & Affiliations
8 authors, click to expand affiliations / ORCID
Stetson Daniel B
University of California-San Francisco, Box 0654, C-443, 521 Parnassus Avenue, San Francisco, CA 94143, USA.
Mohrs Markus
Reinhardt R Lee
Baron Jody L
Wang Zhi-En
Gapin Laurent
Kronenberg Mitchell
Locksley Richard M
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