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Thyroid hormone regulates the obesity gene tub

Item Type:Article
Title:Thyroid hormone regulates the obesity gene tub
Creators Name:Koritschoner, N.P. and Alvarez-Dolado, M. and Kurz, S.M. and Heikenwaelder, M.F. and Hacker, C. and Vogel, F. and Munoz, A. and Zenke, M.
Abstract:Thyroid hormone T3/T4 is a major regulator of energy metabolism in vertebrates, and defects in thyroid status are frequently associated with changes in body weight. It is demonstrated here that thyroid hormone regulates in vivo and in vitro the tub gene, which when mutated in tubby mice causes obesity, insulin resistance and sensory deficits. Hypothyroidism in rats altered tub mRNA and protein in discrete brain areas. These changes could be attributed to thyroid hormone deficiency since T3/T4 treatment restored normal tub expression. T3 also upregulated tub mRNA within 4-6 h in neuronal cells in culture, suggesting that T3 is a positive regulator of tub gene expression. Thus, these results establish a novel pathway of T3 action and provide an important molecular link between thyroid status and the tubby-associated syndrome.
Keywords:Body Weight, Brain, Cell Line, Gene Expression Profiling, Gene Expression Regulation, Hypothyroidism, Immunohistochemistry, In Situ Hybridization, Messenger RNA, Mutation, Northern Blotting, PC12 Cells, Proteins, Reverse Transcriptase Polymerase Chain Reaction, Thyroid Hormones, Time Factors, Up-Regulation, Animals, Rats
Source:EMBO Reports
Publisher:Oxford University Press
Page Range:499-504
Date:1 January 2001
Official Publication:https://doi.org/10.1093/embo-reports/kve107
PubMed:View item in PubMed

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