Epigenetics in osteoarthritis: Novel spotlight

Area of Science:

• * Orthopedics and Rheumatology
• * Molecular Biology and Genetics

Background:

• * Osteoarthritis (OA) is a prevalent degenerative joint disease.
• * Traditionally viewed as 'wear and tear,' OA pathogenesis involves inflammatory mediators.
• * Genetic factors alone do not fully explain OA inheritance, suggesting epigenetic involvement.

Purpose of the Study:

• * To review the role of epigenetic mechanisms in osteoarthritis (OA) etiopathogenesis.
• * To highlight the significance of epigenetic regulation in OA development and progression.

Main Methods:

• * Comprehensive literature review of studies investigating epigenetics in OA.
• * Analysis of epigenetic modifications including DNA methylation, histone modification, microRNA, and long noncoding RNA.
• * Examination of environmental influences on epigenetic changes in OA.

Main Results:

• * Epigenetic mechanisms (DNA methylation, histone modification, noncoding RNAs) are integral to OA pathogenesis.
• * Environmental factors can induce epigenetic alterations that promote OA.
• * These epigenetic changes persist, impeding the body's regenerative capacity and contributing to OA chronicity.

Conclusions:

• * Epigenetics plays a crucial role in the development and progression of osteoarthritis.
• * Understanding epigenetic regulation is vital for developing future OA therapies.
• * Epigenetic modifications contribute to the chronic and often incurable nature of OA.