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DNA Damage and Epigenetic Changes in Kidney Diseases - Focused on Transcription Factors in Podocytes
Kaori Hayashi1, Akihito Hishikawa, Hiroshi Itoh
1Department of Internal Medicine, School of Medicine, Keio University, 35 Shinanomachi, Shinjukuku, Tokyo 160-8582, Japan. kaorihayashi@keio.jp.
Abstract:
Recently it has been shown that epigenetic mechanisms are involved in initiation and progression of caridiovascular and metabolic diseases, including diabetes, obesity, atherosclerosis, heart failure, hypertension and kidney diseases. In these chronic diseases, various exogenous and endogenous stresses cause DNA damage, followed by DNA repair process. Accumulation of DNA damages and impaired repair process can lead to epigenetic changes, which may contribute to onset and progression of diseases. Recently we have shown that therapeutic effect of transcription factor KLF4 (Kruppel-like factor 4) in kidney glomerular epithelial cells (podocytes) on proteinuric kidney diseases through epigenetic mechanisms. Our result suggests the possibility of transcription factors as a target of selective epigenetic therapy. Moreover, we have reported that renin-angiotensin system (RAS) blockers, which are widely prescribed for the treatment of cardiovascular diseases, can restore epigenetic changes through KLF4 in part. These results suggest that activation of RAS causes epigenetic changes in disease states, and elucidation of the precise mechanism may lead to establishment of novel therapeutic target of kidney diseases. In this review we focus on DNA damage repair system and epigenetic modulators in disease states, and speculate a candidate for epigenetic therapy of kidney diseases.
Insights
Epigenetic changes, driven by DNA damage and impaired repair, contribute to cardiovascular and kidney diseases. Transcription factor KLF4 shows therapeutic potential for proteinuric kidney diseases via epigenetic mechanisms.
Area of Science:
- Epigenetics and Molecular Medicine
- Nephrology and Cardiovascular Research
Background:
- Epigenetic mechanisms are implicated in cardiovascular and metabolic diseases, including diabetes, obesity, atherosclerosis, heart failure, hypertension, and kidney diseases.
- Chronic diseases involve DNA damage and repair processes; accumulated damage and impaired repair can lead to epigenetic alterations contributing to disease onset and progression.
Purpose of the Study:
- To review the role of DNA damage repair systems and epigenetic modulators in disease states.
- To explore potential epigenetic therapy targets for kidney diseases.
Main Methods:
- Focus on DNA damage repair mechanisms and epigenetic modulators in disease contexts.
- Review of existing literature on transcription factor KLF4 and renin-angiotensin system (RAS) blockers in kidney disease.
Main Results:
- Therapeutic effects of transcription factor KLF4 in kidney glomerular epithelial cells (podocytes) on proteinuric kidney diseases were demonstrated through epigenetic mechanisms.
- Renin-angiotensin system (RAS) blockers were found to partially restore epigenetic changes via KLF4, suggesting RAS activation contributes to epigenetic alterations in disease.
Conclusions:
- Transcription factors, like KLF4, represent potential targets for selective epigenetic therapy.
- Elucidating the precise mechanisms of RAS-induced epigenetic changes may lead to novel therapeutic targets for kidney diseases.
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