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Mol. Cell. Biol., 01 1996, 202-210, Vol 16, No. 1
BD Ortiz, AM Krensky and PJ Nelson
RANTES is a chemoattractant cytokine (chemokine) whose gene is expressed
immediately after stimulation of several cell types but upregulated late (3
to 5 days) after activation in normal T lymphocytes. Here we describe two
cis-acting elements in the human RANTES promoter that act in T lymphocytes.
One site interacts with NFIL6, which is activated within the first 24 h
after T-cell activation. The second site binds an apparently novel complex
that is upregulated later, between days 3 and 5. These data provide an
explanation for the immediate-early expression of RANTES in some cell types
and identify apparently novel factors contributing to late RANTES
transcription in T cells. The results reveal a developmental switch
occurring during normal T-cell maturation coincident with the onset of
terminal differentiation and the binding of late-acting factors to
sequences of the RANTES promoter.
Copyright © 1996, American Society for Microbiology
Kinetics of transcription factors regulating the RANTES chemokine gene reveal a developmental switch in nuclear events during T-lymphocyte maturation
Multidisciplinary Program in Immunology, Stanford University School of Medicine, California 94305-5119, USA.
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