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Science. 1991 Oct 18;254(5030):415-8.

Targets for dioxin: genes for plasminogen activator inhibitor-2 and interleukin-1 beta.

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Chemical Industry Institute of Toxicology, Research Triangle Park, NC 27709.


Dioxin (2,3,7,8-tetrachlorodibenzo-p-dioxin, TCDD), a widespread environmental contaminant, may elicit its effects by altering gene expression in susceptible cells. Five TCDD-responsive complementary DNA clones were isolated from a human keratinocyte cell line. One of these clones encodes plasminogen activator inhibitor-2, a factor that influences growth and differentiation by regulating proteolysis of the extracellular matrix. Another encodes the cytokine interleukin-1 beta. Thus, TCDD alters the expression of growth regulatory genes and has effects similar to those of other tumor-promoting agents that affect both inflammation and differentiation.

[Indexed for MEDLINE]

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