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. 1986 Sep;6(9):3042-9.
doi: 10.1128/mcb.6.9.3042-3049.1986.

Promoter region of interleukin-2 gene undergoes chromatin structure changes and confers inducibility on chloramphenicol acetyltransferase gene during activation of T cells

U Siebenlist, D B Durand, P Bressler, N J Holbrook, C A Norris, M Kamoun, J A Kant, G R Crabtree

Promoter region of interleukin-2 gene undergoes chromatin structure changes and confers inducibility on chloramphenicol acetyltransferase gene during activation of T cells

U Siebenlist et al. Mol Cell Biol. 1986 Sep.

Abstract

The chromatin structure of the interleukin-2 (IL-2) gene was probed by DNase I treatment of isolated nuclei. The 5' region of the IL-2 gene contains three regions of hypersensitivity to DNase I. When peripheral blood T cells or Jurkat T cells are stimulated with mitogens, IL-2 message is induced, and the promoter region of the IL-2 gene develops an additional hypersensitive site. This suggests that a DNA sequence close to the transcriptional start site is involved in the transduction of the extracellular signal. Such a conclusion is further supported by DNA transfection experiments. A short segment of DNA, which includes the region of induced hypersensitivity, confers inducibility on the linked chloramphenicol acetyltransferase gene in transiently transfected Jurkat cells. In addition, cells of nonhematopoietic origins exhibit a strikingly different chromatin pattern of IL-2, suggesting a role during differentiation for some of the hypersensitive sites.

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