Peroxisome proliferators and T3 operate by way of distinct receptors

FEBS Letters

Castelein, Hilde¹  Declercq, Peter E.¹  Baes, Myriam I.¹  Mannaerts, Guy P.² 

[1]Department of Clinical Chemistry, Faculty of Pharmaceutical Sciences, Catholic University of Leuven, E. Van Evenstraat 4, B-3000 Leuven, Belgium

[2]Department of Pharmacology, Faculty of Medicine, Catholic University of Leuven, Campus Gasthuisberg, Herestraat 49, B-3000 Leuven, Belgium

关键词: Thyroid hormone;    Peroxisome proliferator activated receptor;    Signal transduction;    PPAR;    peroxisome proliferator activated receptor;    TR;    thyroid β-receptor;    DMEM;    Dulbecco's Modified Eagle's Medium;    DMSO;    dimethylsulfoxide;    PBS;    phosphate-buffered saline;    DTT;    dithiothreitol;    PMSF;    phenylmethanesulphonylfluoride;    CAT;    chloramphenicol acetyltransferase;    TRE;    thyroid hormone response element;   

DOI  :  10.1016/0014-5793(93)80474-9

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

Peroxisome proliferators and thyroid hormones have a number of common metabolic effects. The possibility that the signal transduction pathways of both groups of effectors converge at the receptor level was investigated. It was shown that T3, specifically bound to the rat thyroid β-receptor, was not displaced to a significant extent by ciprofibrate or bezafibrate. No specific binding of T3 to the mouse peroxisome proliferator activated receptor could be demonstrated. In transactivation experiments peroxisome proliferators were unable to activate the thyroid receptor and T3 did not activate a chimeric receptor containing the ligand binding domain of the peroxisome proliferator activated receptor. It is concluded that peroxisome proliferators and thyroid hormone do not cross-react at the level of their nuclear receptors.

【 授权许可】

Unknown