Detailed Information on Publication Record
2014
Upregulation of CYP1B1 expression by inflammatory cytokines is mediated by the p38 MAP kinase signal transduction pathway
ŠMERDOVÁ, Lenka, Jana SVOBODOVÁ, Markéta KABÁTKOVÁ, Jiří KOHOUTEK, Dalibor BLAŽEK et. al.Basic information
Original name
Upregulation of CYP1B1 expression by inflammatory cytokines is mediated by the p38 MAP kinase signal transduction pathway
Authors
ŠMERDOVÁ, Lenka (203 Czech Republic), Jana SVOBODOVÁ (203 Czech Republic, belonging to the institution), Markéta KABÁTKOVÁ (203 Czech Republic, belonging to the institution), Jiří KOHOUTEK (203 Czech Republic), Dalibor BLAŽEK (203 Czech Republic, guarantor, belonging to the institution), Miroslav MACHALA (203 Czech Republic) and Jan VONDRÁČEK (203 Czech Republic)
Edition
Carcinogenesis, Oxford, Oxford University Press, 2014, 0143-3334
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
30204 Oncology
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 5.334
RIV identification code
RIV/00216224:14740/14:00073973
Organization unit
Central European Institute of Technology
UT WoS
000345835800017
Keywords in English
CYP1B1; inflammation; p38 MAP kinase; MSK; metabolism of carcinogens
Tags
Tags
International impact, Reviewed
Změněno: 16/12/2019 15:27, Mgr. Marie Šípková, DiS.
Abstract
V originále
Cytochrome P450 1B1 (CYP1B1) is an enzyme that has a unique tumor-specific pattern of expression and is capable of bioactivating a wide range of carcinogenic compounds. We have reported previously that coordinated upregulation of CYP1B1 by inflammatory cytokines, such as tumor necrosis factor-delta(TNF-delta) and the aryl hydrocarbon receptor ligands, may increase bioactivation of promutagens, such as benzo[a]pyrene (BaP) in epithelial cells. Here, we extend those studies by describing a novel mechanism participating in the regulation of CYP1B1 expression, which involves activation of the p38 mitogen-activated protein kinase (p38) and mitogen- and stress-activated protein kinase 1 (MSK1). Using inhibitors of p38 and MSKs, as well as mouse embryonic cells derived from p38delta-deficient and MSK1/2 double knockout mice, we show here that TNF-delta potentiates CYP1B1 upregulation via the p38/MSK1 kinase cascade. Effects of this inflammatory cytokine on CYP1B1 expression further involve the positive transcription elongation factor b (P-TEFb). The inhibition of the P-TEFb subunit, cyclin-dependent kinase 9 (CDK9), which phosphorylates RNA polymerase II (RNAPII), prevented the enhanced CYP1B1 induction by a combination of BaP and inflammatory cytokine. Furthermore, using chromatin immunoprecipitation assays, we found that cotreatment of epithelial cells with TNF-delta and BaP resulted in enhanced recruitment of both CDK9 and RNAPII to the Cyp1b1 gene promoter. Overall, these results have implications concerning the contribution of inflammatory factors to carcinogenesis, since enhanced CYP1B1 induction during inflammation may alter metabolism of exogenous carcinogens, as well as endogenous CYP1B1 substrates playing role in tumor development
Links
CZ.1.05/1.1.00/02.0068, interní kód MU |
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CZ.1.07/2.3.00/30.0030, interní kód MU |
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GA14-09979S, research and development project |
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