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Nonhistone Post-translational Modifications as Integrative Signaling Networks in Podocyte Injury and Glomerular
Zhuoying He1, Hanzhi Jiang1, Shaoguo Tao1
1Department of Nephrology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, China.
Journal of the American Society of Nephrology : JASN
|August 11, 2026
Summary
Nonhistone post-translational modifications regulate podocyte function and injury in chronic kidney diseases. This review explores their roles and proposes a model for podocyte deterioration, highlighting therapeutic potential.
Area of Science:
- Nephrology
- Molecular Biology
- Biochemistry
Background:
- Podocytes are crucial for kidney filtration; their dysfunction causes proteinuria and glomerulosclerosis in chronic kidney diseases.
- While histone modifications are studied, nonhistone post-translational modifications (PTMs) are increasingly recognized for their regulatory roles in podocyte biology.
- Evidence for specific nonhistone PTMs in podocyte injury varies, with some mechanisms inferred from broader kidney models.
Purpose of the Study:
- To review the molecular regulatory networks and pathophysiological significance of major nonhistone PTMs in podocytes.
- To propose an integrative conceptual model of podocyte deterioration.
- To highlight therapeutic strategies targeting nonhistone PTM pathways.
Main Methods:
- Literature review focusing on nonhistone PTMs (acetylation, phosphorylation, methylation, lactylation, ubiquitination, SUMOylation) in podocyte biology and kidney disease.
- Synthesis of existing data to develop a conceptual model of podocyte injury.
- Analysis of therapeutic implications and translational challenges.
Main Results:
- Nonhistone PTMs modulate critical podocyte processes including apoptosis, cytoskeletal remodeling, and metabolic reprogramming.
- A conceptual model linking pathological stimuli to podocyte structural collapse via stress transduction and effector decompensation is proposed.
- Targeting nonhistone PTM pathways shows therapeutic promise for podocytopathies.
Conclusions:
- Nonhistone PTMs are key regulators of podocyte function and are implicated in the pathogenesis of various chronic kidney diseases.
- The proposed conceptual model offers a framework for generating testable hypotheses about podocyte injury mechanisms.
- Further research into nonhistone PTMs is essential for developing targeted therapies for podocytopathies, despite existing translational hurdles.
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