Review: protein repair as an overlooked part of proteostasis in aging
This review argues that enzymatic protein repair is more widespread and important than long assumed, and links failing repair to age-related diseases. It is a mechanistic framework, not new measurements. [1]
Automatic summary · not editorially reviewed
The key findings
The review says enzymatic protein repair is more widespread and functionally significant than previously appreciated, based on evidence from prokaryotic and eukaryotic systems. [1]
The authors propose that repair is selectively deployed when replacement is inefficient or deleterious. [1]
The review links progressive failure of protein repair to proteome instability and cellular dysfunction in age-related diseases. [1]
The source at a glance
- Study type / format
- Narrative review (abstract only)
- Population / context
- Not applicable; a conceptual review of protein damage and repair across prokaryotic and eukaryotic systems and age-related diseases.
- Summary based on
- Study abstract
- Original publication
- October 8, 2026
Review reframes damaged proteins as repairable
The authors note that proteins were long seen as largely disposable rather than repairable, shaping the usual proteostasis view in which damaged proteins are mainly removed and replaced. Evidence from prokaryotic and eukaryotic systems, they say, shows enzymatic protein repair is more widespread and functionally significant than previously appreciated. They therefore treat repair as a distinct, under-recognized part of proteostasis that complements degradation and resynthesis.
Supporting source [1]
Damage types mapped to matching repair systems
The review offers a mechanistic framework pairing major forms of protein damage — oxidation, nitration, chlorination, glycation and spontaneous isomerization — with their corresponding repair systems. The authors argue that the apparent scarcity of repair pathways reflects biochemical complexity, energetic cost and the heterogeneity of damaged substrates, not their absence. They also propose that repair is used selectively when replacement is inefficient or harmful, discussing trade-offs between repair and turnover.
Supporting source [1]
Proposed link from repair failure to age-related disease
The authors connect these mechanisms to the pathogenesis of major age-related diseases, including neurodegenerative, cardiovascular and metabolic disorders, and cancer. They suggest that progressive failure of protein repair contributes to proteome instability and cellular dysfunction. The review also outlines emerging opportunities for therapeutic intervention targeting protein damage in aging and disease. These are proposed interpretations and perspectives, not demonstrated treatments or measured outcomes.
Supporting source [1]
How to interpret this
Abstract only; the full text was not reviewed. This is a review presenting a mechanistic framework and perspectives, not new experimental data, so the disease links and therapeutic opportunities are proposed interpretations rather than demonstrated causal or clinical findings.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Lyakhovich A, Ferrucci L. · europepmc.org · October 8, 2026