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Comparative cytochrome P450 ‐ 1A1 , ‐ 2A6 , ‐ 2B6 , ‐ 2C , ‐ 2D6 , ‐ 2E1 , ‐ 3A5 and ‐ 4B1 expressions in human larynx tissue analysed at mRNA level
Author(s) -
Sarikaya Devrim,
Bilgen Cem,
Kamataki Tetsuya,
Topcu Zeki
Publication year - 2006
Publication title -
biopharmaceutics and drug disposition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.419
H-Index - 58
eISSN - 1099-081X
pISSN - 0142-2782
DOI - 10.1002/bdd.518
Subject(s) - cyp1a2 , cytochrome p450 , primer (cosmetics) , messenger rna , larynx , cyp2d6 , microbiology and biotechnology , biology , enzyme , chemistry , biochemistry , gene , anatomy , organic chemistry
The metabolic activation of numerous exogenous and endogenous chemicals is catalysed by cytochrome P450 enzymes (CYPs). The aim of this study was to analyse the expression of the individual forms of CYP at the mRNA level in human larynx and quantitatively to compare their expressions in human liver, the main organ of CYP expression. Individual forms of CYP mRNAs were detected by reverse transcriptase‐polymerase chain reaction (RT‐PCR) using specific primers for the CYPs ‐ 1A1 , ‐ 1A2 , ‐ 2A6 , ‐ 2B6 , ‐ 2C , ‐ 2D6 , ‐ 2E1 , ‐ 3A3/4 , ‐ 3A5 , ‐ 3A7 and ‐ 4B1 . An RNA competitor of known copy number, covering the primer sequences necessary to amplify the entire object CYP s within a single molecule, was used as reference. This study reports a consistent detection of mRNAs for the CYP s ‐ 1A1 , ‐ 2A6 , ‐ 2B6 , ‐ 2C , ‐ 2D6 , ‐ 2E1 , ‐ 3A5 and ‐ 4B1 in the human larynx tissue. The data indicate that the human larynx highly resembles the lung tissue in CYP content, as a comparable subset of CYP mRNAs was detected in the larynx previously reported for human lung with the exception of CYP1A2 . The results are discussed in quantitative ratios of the detected CYP mRNAs in relation to the hepatic CYP expression. Copyright © 2006 John Wiley & Sons, Ltd.