title: Cyclophilin-40 has a cellular role in the aryl hydrocarbon receptor signaling.
abstract: Cyclophilin-40 (CyP40) promotes the formation of the gel shift complex that contains the aryl hydrocarbon receptor (AhR), AhR nuclear translocator (Arnt) and dioxin response element (DRE) using baculovirus expressed proteins. Here we reported that CyP40 plays a role in the AhR signaling. When the CyP40 content in MCF-7 cells is reduced, up-regulation of cyp1a1 and cyp1b1 by 3-methylchloranthrene (3MC) is also reduced, suggesting that CyP40 is essential for maximal AhR function. The CyP40 region containing amino acids 186-215, but not the peptidyl-prolyl cis-trans isomerase and tetratricopeptide repeat domains, is essential for forming the AhR/Arnt/DRE complex. CyP40 is found in the cell nucleus after 3MC treatment and appears to promote the DRE binding form of the AhR/Arnt heterodimer.
authors: Department of Pharmaceutics and Medicinal Chemistry, Thomas J. Long School of Pharmacy and Health Sciences, University of the Pacific, Stockton, CA 95211, USA.
authors: Tony C
authors: TC
authors: Luu
authors: Pompeya
authors: P
authors: Bhattacharya
authors: William K
authors: WK
authors: Chan
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001189:Aryl Hydrocarbon Hydroxylases / Q000235:genetics; D051784:Aryl Hydrocarbon Receptor Nuclear Translocator / Q000378:metabolism*; D045744:Cell Line, Tumor; D002467:Cell Nucleus / Q000378:metabolism; D000081406:Peptidyl-Prolyl Isomerase F; D021983:Cyclophilins / Q000235:genetics / Q000378:metabolism*; D019363:Cytochrome P-450 CYP1A1 / Q000235:genetics; D065633:Cytochrome P-450 CYP1B1; D019281:Dimerization; D004147:Dioxins / Q000494:pharmacology; D024202:Electrophoretic Mobility Shift Assay; D006801:Humans; D008748:Methylcholanthrene / Q000494:pharmacology; D018336:Receptors, Aryl Hydrocarbon / Q000378:metabolism*; D020218:Response Elements / Q000187:drug effects; D015398:Signal Transduction
chemical_list: D000081406:Peptidyl-Prolyl Isomerase F; D004147:Dioxins; D018336:Receptors, Aryl Hydrocarbon; D051784:Aryl Hydrocarbon Receptor Nuclear Translocator; D008748:Methylcholanthrene; D001189:Aryl Hydrocarbon Hydroxylases; C585496:CYP1B1 protein, human; D019363:Cytochrome P-450 CYP1A1; D065633:Cytochrome P-450 CYP1B1; D021983:Cyclophilins