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[Current topics in nuclear receptor study]
1Department of Agricultural Chemistry, Tokyo University of Agriculture.
Abstract:
Nuclear receptors for steroid/thyroid hormones and fat-soluble vitamins A and D act as ligand-inducible transcriptional factors. Recent progress in nuclear receptor study showed that nuclear receptors transmit the signals of those ligand into gene expression. In this article, some topics in this field were illustrated with special attention to cancer and retinoid actions. Functional analysis of target enhancer elements of distinct classes of nuclear receptors revealed the target specificity and unselectivity. Some of molecular mechanism for oncogenesis and retinoid actions have been clarified at nuclear receptor levels.
Insights
Nuclear receptors regulate gene expression in response to hormones and vitamins. This study clarifies their role in cancer and retinoid actions, revealing molecular mechanisms of oncogenesis.
Area of Science:
- Molecular biology
- Endocrinology
- Genetics
Context:
- Nuclear receptors are key mediators of hormonal and vitamin signaling.
- These receptors function as ligand-inducible transcriptional factors, controlling gene expression.
- Recent advancements have elucidated their role in transmitting signals from ligands to genetic responses.
Purpose:
- To illustrate recent progress in nuclear receptor research.
- To focus on the specific roles of nuclear receptors in cancer and retinoid actions.
- To analyze the functional characteristics of target enhancer elements for different nuclear receptor classes.
Summary:
- Nuclear receptors integrate signals from steroid hormones, thyroid hormones, and fat-soluble vitamins (A and D).
- Functional analysis of target enhancer elements demonstrates both specific and non-specific binding patterns for distinct nuclear receptor classes.
- The study clarifies molecular mechanisms underlying oncogenesis and the actions of retinoids at the level of nuclear receptors.
Impact:
- Provides insights into the molecular basis of cancer development and retinoid signaling pathways.
- Enhances understanding of how nuclear receptors mediate cellular responses to various ligands.
- Contributes to the knowledge base for potential therapeutic strategies targeting nuclear receptor pathways in cancer and other diseases.