Epigenetic mechanisms: role in the development and progression of multifactorial diseases

Abstract

Epigenetic mechanisms play a key role in regulating gene expression without changes in the DNA sequence, which makes them important factors in the development and progression of multifactorial diseases. Unlike classical genetic mutations that change the DNA structure, epigenetic modifications regulate gene activity, which can lead to the development of various pathological conditions. In particular, DNA methylation mechanisms, histone modifications and non-coding RNAs are involved in the pathogenesis of a wide range of diseases, including oncological, cardiovascular, neurodegenerative and autoimmune pathologies. It has been established that changes in the epigenome can be caused by both genetic factors and the influence of the environment, lifestyle, nutrition and stress. This determines the importance of studying epigenetic mechanisms, since their modification can have significant therapeutic potential. The aim of the article is to study and systematize current scientific data on epigenetic mechanisms in the pathogenesis of multifactorial diseases, determine their significance for diagnostics and prospects for therapeutic influence. Analysis of modern research shows that DNA methylation is one of the key mechanisms of epigenetic regulation, which affects the activity of genes involved in the development of various diseases. It has been established that changes in the level of methylation can both suppress and activate certain genetic programs that play a role in pathological processes, in particular in tumor growth, inflammatory reactions and metabolic disorders. Studiesindicate that the level of methylation can change under the influence of external factors, such as lifestyle, environmental conditions and nutrition, which opens up prospects for the development of approaches to its correction. Another important epigenetic mechanism is histone modification, which affects the structure of chromatin and the regulation of gene transcription. It has been demonstrated that certain changes in these processes may be associated with neurodegenerative, autoimmune and cardiovascular diseases. Studies have shown that disruption of the level of some histone modifications is associated with changes in the expression of genes that control inflammatory processes, cell growth and differentiation. Given these data, modulating the activity of enzymes involved in these processes is considered a promising approach in the development of new therapeutic strategies. In addition, non-coding RNAs also play a significant role in the regulation of genetic activity. It has been established that their expression changes in various pathological conditions, in particular in oncological, metabolic and cardiovascular diseases. Some of these molecules contribute to the maintenance of normal cellular functions, while others may participate in the development of pathological changes. This gives grounds for considering these mechanisms as potential targets for therapeutic intervention. Thus, modern studies demonstrate that epigenetic mechanisms play a significant role in the pathogenesis of a wide range of multifactorial diseases. The study of these processes not only deepens the understanding of the mechanisms of pathology development, but also opens up new opportunities for creating methods of early diagnosis and therapy. Further research into epigenetic changes and the development of approaches to their correction may become the basis for personalized medicine, which will allow for more effective prevention and treatment of various diseases.