Title : Okadaic acid stimulates osteopontin expression through de novo induction of AP-1.

Pub. Date : 2002

PMID : 12210726






9 Functional Relationships(s)
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1 Okadaic acid stimulates osteopontin expression through de novo induction of AP-1. Okadaic Acid secreted phosphoprotein 1 Homo sapiens
2 Okadaic acid, a strong non-phorbol ester tumor promoter, is known to stimulate the expression of osteopontin. Okadaic Acid secreted phosphoprotein 1 Homo sapiens
3 The aim of the present study was to understand the mechanism by which okadaic acid regulates osteopontin gene expression. Okadaic Acid secreted phosphoprotein 1 Homo sapiens
4 Okadaic acid stimulated osteopontin mRNA expression in several cell lines within 3 h, and the increase in osteopontin mRNA was sustained for 24 h. New protein synthesis was required for the okadaic acid-elicited increase in osteopontin mRNA expression. Okadaic Acid secreted phosphoprotein 1 Homo sapiens
5 Okadaic acid stimulated osteopontin mRNA expression in several cell lines within 3 h, and the increase in osteopontin mRNA was sustained for 24 h. New protein synthesis was required for the okadaic acid-elicited increase in osteopontin mRNA expression. Okadaic Acid secreted phosphoprotein 1 Homo sapiens
6 Okadaic acid stimulated osteopontin mRNA expression in several cell lines within 3 h, and the increase in osteopontin mRNA was sustained for 24 h. New protein synthesis was required for the okadaic acid-elicited increase in osteopontin mRNA expression. Okadaic Acid secreted phosphoprotein 1 Homo sapiens
7 Okadaic acid stimulated osteopontin mRNA expression in several cell lines within 3 h, and the increase in osteopontin mRNA was sustained for 24 h. New protein synthesis was required for the okadaic acid-elicited increase in osteopontin mRNA expression. Okadaic Acid secreted phosphoprotein 1 Homo sapiens
8 Site-directed mutagenesis and electrophoretic mobility shift assays confirmed that protein binding of the AP-1 consensus sequence is necessary for the okadaic acid-mediated osteopontin gene upregulation. Okadaic Acid secreted phosphoprotein 1 Homo sapiens
9 These results indicate that de novo induction of the oncoprotein AP-1 is required for okadaic acid-stimulated osteopontin gene upregulation. Okadaic Acid secreted phosphoprotein 1 Homo sapiens