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Review
. 1994 Nov 15:744:155-60.
doi: 10.1111/j.1749-6632.1994.tb52732.x.

Leukotriene D4-induced signal transduction

Affiliations
Review

Leukotriene D4-induced signal transduction

A Sjölander et al. Ann N Y Acad Sci. .

Abstract

In a human epithelial cell line LTD4 induces a calcium signal that is dependent on both intracellular mobilization and influx of calcium. This calcium signal is generated via the activation of dual G protein pathways. Whereas the intracellular mobilization of calcium is regulated by a pertussis toxin-insensitive G protein, the subsequent influx of calcium is regulated by a pertussis toxin-sensitive G protein. Furthermore, a LTD4-induced cellular elevation of cAMP also participates in the regulation of this calcium signal. The increase in cAMP is directly related to the LTD4-induced influx of calcium, perhaps by an activation of protein kinase A and a subsequent phosphorylation of a plasma membrane channel. This model of the LTD4-induced signaling pathway in epithelial cells is outlined in Figure 2.

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