Different configurations of specific thyroid hormone response elements mediate opposite effects of thyroid hormone and GC-1 on gene expression

Bernd Gloss, Gisele Giannocco, Eric A. Swanson, Anselmo S. Moriscot, Grazia Chiellini, Thomas (Tom) Scanlan, John D. Baxter, Wolfgang H. Dillmann

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

T3 regulates transcription of the rat sarcoendoplasmic reticulum calcium ATPase in the heart. The T3 effect is mediated by three differently configured T3 response elements (TREs). Here we report the mutation of each individual TRE in the promoter and the contribution of each TRE on gene expression. Mutation of TRE1, a direct repeat element, exerted the strongest T3 response, compared with TRE2 and TRE3, which are inverted palindromes. The isolated TRE2 and TRE3, which showed no response (TRE2) or were weakly positive with T3 (TRE3), became strong negative regulatory elements with the T3 analog GC-1. We found that TRE1 recruits corepressor complexes containing nuclear receptor corepressor and histone deacetylase 3 in the absence of ligand, and steroid receptor coactivator-1-containing coactivator complexes with both T3 and GC-1. TRE3 bound the same corepressor complexes without ligand but showed only a weak association with steroid receptor coactivator-1 with T3 and a strong association with corepressor complexes with GC-1. Thus, GC-1 appears to control cofactor association differentially on these two sarcoendoplasmic reticulum calcium ATPase TREs, which could be the mechanism of ligand-dependent transcriptional activation and repression observed with the isolated TRE1 and TRE3 elements. Because the x-ray crystal structures of GC-1 and T3 complexed with the TR ligand binding domain are superimposable, the results imply that GC-1 and T3 induce differential effects on the receptor that are not evident in the static structures but must occur in the dynamic setting of receptor function. These results have implications for selective modulation of receptor function by agonist ligands.

Original languageEnglish (US)
Pages (from-to)4926-4933
Number of pages8
JournalEndocrinology
Volume146
Issue number11
DOIs
StatePublished - Nov 2005
Externally publishedYes

Fingerprint

Response Elements
Thyroid Hormones
Co-Repressor Proteins
Gene Expression
Ligands
Nuclear Receptor Coactivator 1
Reticulum
Calcium-Transporting ATPases
Mutation
Nucleic Acid Repetitive Sequences
Transcriptional Activation
GC 1 compound
X-Rays

ASJC Scopus subject areas

  • Endocrinology
  • Endocrinology, Diabetes and Metabolism

Cite this

Different configurations of specific thyroid hormone response elements mediate opposite effects of thyroid hormone and GC-1 on gene expression. / Gloss, Bernd; Giannocco, Gisele; Swanson, Eric A.; Moriscot, Anselmo S.; Chiellini, Grazia; Scanlan, Thomas (Tom); Baxter, John D.; Dillmann, Wolfgang H.

In: Endocrinology, Vol. 146, No. 11, 11.2005, p. 4926-4933.

Research output: Contribution to journalArticle

Gloss, B, Giannocco, G, Swanson, EA, Moriscot, AS, Chiellini, G, Scanlan, TT, Baxter, JD & Dillmann, WH 2005, 'Different configurations of specific thyroid hormone response elements mediate opposite effects of thyroid hormone and GC-1 on gene expression', Endocrinology, vol. 146, no. 11, pp. 4926-4933. https://doi.org/10.1210/en.2005-0631
Gloss, Bernd ; Giannocco, Gisele ; Swanson, Eric A. ; Moriscot, Anselmo S. ; Chiellini, Grazia ; Scanlan, Thomas (Tom) ; Baxter, John D. ; Dillmann, Wolfgang H. / Different configurations of specific thyroid hormone response elements mediate opposite effects of thyroid hormone and GC-1 on gene expression. In: Endocrinology. 2005 ; Vol. 146, No. 11. pp. 4926-4933.
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