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High-throughput Screening for Chemical Modulators of Post-transcriptionally Regulated Genes
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High-throughput Screening for Chemical Modulators of Post-transcriptionally Regulated Genes

Published on: March 3, 2015

Modulation of TSHR signaling by posttranslational modifications

Romy Kursawe1, Ralf Paschke

  • 1Medical Department III, University of Leipzig, Ph.-Rosenthal-Str. 27, 04103 Leipzig, Germany.

Trends in Endocrinology and Metabolism: TEM
|May 26, 2007
PubMed

Insights

Posttranslational modifications significantly impact seven transmembrane receptors (7TMRs) function. New research highlights sialylation and dimerization of the thyrotropin-stimulating hormone receptor (TSHR), influencing its cell-surface expression and signaling pathways.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Endocrinology

Background:

  • Seven transmembrane receptors (7TMRs) undergo posttranslational modifications (PTMs) like glycosylation and phosphorylation, affecting their function.
  • Recent studies reveal novel PTMs for the thyrotropin-stimulating hormone receptor (TSHR), including sialylation and dimerization.

Purpose of the Study:

  • To explore the functional consequences of emerging posttranslational modifications on the thyrotropin-stimulating hormone receptor (TSHR).
  • To discuss the implications of TSHR sialylation, dimerization, and novel signaling pathways.

Main Methods:

  • Characterization of novel posttranslational modifications of the TSHR.
  • Analysis of TSHR cell-surface expression and signaling pathways.

Main Results:

  • Increased sialylation of TSHR leads to enhanced cell-surface expression.
  • TSHR oligomerization and potential signaling modifications within lipid rafts warrant further investigation.
  • TSHR signaling involves G-protein-coupled receptor kinases (GRKs) and arrestins, impacting the mitogen-activated protein kinase (MAPK) pathway.

Conclusions:

  • Emerging posttranslational modifications significantly influence TSHR function and signaling.
  • Further research is needed to fully elucidate the role of TSHR oligomerization and lipid raft interactions in its signaling cascade.

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