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. 1986 Feb 11;14(3):1525–1539. doi: 10.1093/nar/14.3.1525

Tissue-specific expression of rat mRNAs homologous to cytochromes P-450b and P-450e.

C J Omiecinski
PMCID: PMC339521  PMID: 3754047

Abstract

The tissue-specific expression of cytochrome P-450b and P-450e mRNAs was examined with synthetic 18-mer oligomer probes in the liver, lung, kidney, and testis of control and inducer pretreated adult rats. RNAs homologous to the P-450e probe were detected in trace amounts in control and 3-methylcholanthrene (MC) induced livers and at high levels in livers from phenobarbital (PB) induced animals. P-450e mRNA levels were below detection limits in the other tissues examined, regardless of pretreatment. In contrast, mRNAs homologous to the P-450b oligomer were detected at low levels in control and inducer pretreated lung and testis, and at high levels in PB induced liver. No P-450b mRNAs were detected in these assays in RNA isolates from the kidney or from control or MC pretreated liver. Solution hybridization data indicated that the rat lung contained 9-12%, and the testis, 6-9%, respectively, of the levels of P-450b mRNA measured in the PB induced liver. Results from oligo(dT)-cellulose and poly(U)-affinity experiments indicated that the hepatic mRNAs for P-450b and P-450e were present predominantly in the bound, polyadenylated fraction, whereas the homologous lung and testes P-450b mRNAs predominated in the flow-thru fractions.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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