Expression of 5-lipoxygenase in differentiating human skin keratinocytes.
AUTOR(ES)
Janssen-Timmen, U
RESUMO
We studied the expression of arachidonate 5-lipoxygenase (5-LO) in a cell line of human keratinocytes (HaCaT) and in normal human skin keratinocytes in tissue culture. In undifferentiated keratinocytes 5-LO gene expression was low or undetectable as determined by 5-LO mRNA, protein, cell-free enzyme activity, and leukotriene production in intact cells. However, after shift to culture conditions that promote conversion of prokeratinocytes into a more differentiated phenotype, 5-LO gene expression was markedly induced in HaCaT cells and, to a lesser extent, in normal keratinocytes. These results show that 5-LO gene expression is an intrinsic property of human skin keratinocytes.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=41452Documentos Relacionados
- 5-Lipoxygenase expression in Langerhans cells of normal human epidermis
- On the expression and regulation of 5-lipoxygenase in human lymphocytes.
- Characterization of the human 5-lipoxygenase gene.
- Characterization of the human 5-lipoxygenase gene promoter.
- Expanding expression of the 5-lipoxygenase pathway within the arterial wall during human atherogenesis