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Retinoid X receptors: X-ploring their (patho)physiological functions

A Szanto1, V Narkar, Q Shen

  • 1Department of Biochemistry and Molecular Biology, Research Center for Molecular Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen H-4012, Hungary.

Cell Death and Differentiation
|December 21, 2004
PubMed

Insights

Retinoid X receptor (RXR) is a key transcription factor regulating diverse biological pathways. This review explores RXR's evolution, structure, ligands, and roles in development and disease, highlighting its therapeutic potential.

Area of Science:

  • Molecular Biology
  • Genetics
  • Endocrinology

Background:

  • Retinoid X receptor (RXR) is a ligand-activated transcription factor crucial for metazoan life.
  • RXR acts as a heterodimerization partner for various nuclear receptors, positioning it at the convergence of multiple biological pathways.
  • The precise endogenous ligand requirements for RXR function remain an area of active investigation, contributing to its enigmatic nature.

Purpose of the Study:

  • To provide a comprehensive review of Retinoid X receptor (RXR) biology.
  • To elucidate RXR's evolutionary context, structural characteristics, and ligand interactions.
  • To discuss RXR's regulatory roles in development, metabolism, myeloid differentiation, and apoptosis, and assess its therapeutic potential.

Main Methods:

  • Literature review synthesizing existing research on RXR.
  • Analysis of data from knockout animal studies to understand developmental roles.
  • Examination of pharmacological studies investigating RXR's metabolic functions in disease models.

Main Results:

  • RXR plays critical roles in embryonic development, as evidenced by knockout studies.
  • Pharmacological studies demonstrate RXR's involvement in metabolic diseases like diabetes and atherosclerosis.
  • RXR influences myeloid differentiation and apoptosis, with implications for cancer therapy.

Conclusions:

  • RXR is a central regulator of diverse biological processes, from development to disease.
  • Understanding RXR's complex biology and ligand interactions is essential for therapeutic applications.
  • RXR presents a promising, albeit complex, target for pharmacological intervention in various diseases.

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