Title : Maintenance of phenobarbital-inducible Cyp2b gene expression in C57BL/6 mouse hepatocytes in primary culture as spheroids.

Pub. Date : 1995 Jan 10

PMID : 7840637






4 Functional Relationships(s)
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1 Both the constitutive and phenobarbital-inducible expression of Cyp2b-9 and Cyp2b-10 mRNA decreased rapidly after transferring the hepatocytes to monolayer culture. Phenobarbital cytochrome P450, family 2, subfamily b, polypeptide 9 Mus musculus
2 However, in spheroid culture, the Cyp2b-9 and Cyp2b-10 mRNAs were induced by phenobarbital at high levels for at least 4 days either with continuous exposure from the start of cultivation or for 24 h before harvesting. Phenobarbital cytochrome P450, family 2, subfamily b, polypeptide 9 Mus musculus
3 There was more Cyp2b-10 species than those of Cyp2b-9 after exposure to phenobarbital both in vivo and in vitro. Phenobarbital cytochrome P450, family 2, subfamily b, polypeptide 9 Mus musculus
4 Although the expression levels of both Cyp2b-9 and Cyp2b-10 species was very low in hepatocytes cultured without dexamethasone even in the presence of phenobarbital, the addition of 10(-7) or 10(-6) M dexamethasone caused an increase in the mRNA. Phenobarbital cytochrome P450, family 2, subfamily b, polypeptide 9 Mus musculus