Epigenetics effect on pathogenesis of thyroid-associated ophthalmopathy

Area of Science:

• Endocrinology
• Immunology
• Genetics

Background:

• Thyroid-associated ophthalmopathy (TAO) is an autoimmune disorder affecting the eyes.
• Aberrant epigenetic mechanisms, including DNA methylation, non-coding RNAs, and histone modifications, are increasingly recognized in TAO pathogenesis.

Purpose of the Study:

• To review and summarize the current understanding of epigenetic alterations in TAO.
• To highlight the potential roles of specific epigenetic modifications and molecules in TAO development and progression.

Main Methods:

• Review of recent scientific literature on epigenetics in TAO.
• Analysis of gene methylation patterns, non-coding RNA expression, and histone modifications in TAO patients.

Main Results:

• Differential DNA methylation observed in genes such as CD14, MBP, ANGLE1, LYAR (higher) and DRD4, BOLL (lower).
• Dysregulation of non-coding RNAs (e.g., miR-146a, miR-155, miR-21) implicated in immune response, fibrosis, and adipogenesis.
• Increased histone H4 quantities noted in TAO, suggesting a role for histone modifications.

Conclusions:

• Epigenetic dysregulation plays a significant role in the pathogenesis of TAO.
• Specific epigenetic markers may serve as predictors for disease activity and treatment response.
• Further research into epigenetic mechanisms is crucial for developing novel therapeutic strategies for TAO.