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Genetic defects, thyroid growth and malfunctions of the TSHR in pediatric patients
Heike Biebermann1,Franziska Winkler1,Gunnar Kleinau1
1
Institute of Experimental Pediatric Endocrinology, Charite Universitatsmedizin Berlin, Augustenburger Platz, Berlin, Germany. heike.biebermann@charite.de
DOI: 10.2741/3654 Volume 15 Issue 3, pp.913-933
Published: 01 June 2010
(This article belongs to the Special Issue Thyroid disorders -from molecular science to clinical aplications)
Abstract

Naturally occurring activating and inactivating mutations of the thyrotropin receptor (TSHR) were found as a molecular cause of diseases in patients suffering from non-autoimmune hyperthyroidism and syndromes of thyrotropin resistance, respectively. These mutations are mostly functionally characterized in vitro and therefore, they represent an excellent tool to study structure-function relationships of this G-protein-coupled receptor. In this review, we summarize published germline mutations of the TSHR with focus on 1) the phenotype of (pediatric) patients, 2) potential genotype/phenotype correlations, 3) structural implications for receptor activation and inactivation, 4) the impact on thyroid growth, and 5) finally on aspects of TSHR dimerization. In conclusion, this comprehensive analysis of medical and biological data opens an avenue to understand genetic defects and malfunctions of the TSHR in molecular detail and in their entirety. This knowledge is important to refine our insights in non-autoimmune diseases caused by defects of the TSHR gene and it might help to develop pharmacological means for compensation of uncontrolled thyroid growth.

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Heike Biebermann, Franziska Winkler, Gunnar Kleinau. Genetic defects, thyroid growth and malfunctions of the TSHR in pediatric patients. Frontiers in Bioscience-Landmark. 2010. 15(3); 913-933.