ArticleCell death discovery2025
Long-term atorvastatin improves cognitive function by modulating SIRT2-mediated dynamic transition of NFL lysine 272 crotonylation to ubiquitination in naturally aging rats.
Article in Cell death discovery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Mechanistic and functional integration of sirtuin deacylases: from substrate specificity to biological outcomes.Glycoconjugate journal · 2026Review
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Proteins' reversible post-translational modifications (PTMs) are essential for cellular regulation, but their involvement in statin-mediated neuroprotection remains elusive. Our previous research demonstrated that long-term atorvastatin intervention ameliorates cognitive decline in naturally aged rats, although the underlying mechanisms were unknown. Here, we employed a proteomic and PTMomic approach using mass spectrometry-based quantitative proteomics and bioinformatics analyses to elucidate the molecular underpinnings. We also utilized isolated and cultured rat hippocampal neuronal cells to investigate the regulation of neurofilament light chain (NFL) modifications, including crotonylation and ubiquitination, using techniques such as immunoprecipitation, cell transfection, protein imprinting, and PCR. We identified several novel findings: (1) Long-term atorvastatin treatment significantly reduced NFL protein levels in both brain tissue and serum compared to controls; (2) This intervention decreased NFL crotonylation while enhancing ubiquitination via SIRT2 upregulation; (3) SIRT2 reversibly modulated NFL crotonylation and ubiquitination at lysine 272 (NFLK272); (4) Increased NFL ubiquitination promoted its degradation, reducing neurofibrillary tangle (NFT) formation, which colocalizes with NFL in the brain. These results suggest that long-term atorvastatin enhances NFL ubiquitination through SIRT2-mediated reversible regulation at NFLK272, leading to reduced NFT pathology and improved cognitive function. These findings not only redefine the pleiotropic neuroprotective actions of statins but also nominate SIRT2-mediated PTM interplay as a druggable node for mitigating neurofilamentopathy-driven cognitive decline.
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Registered trials
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