ArticleEuropean journal of medical research2025
SIRT1/PGC-1α-mediated mitophagy participates the improvement roles of BMAL1 in podocytes injury in diabetic nephropathy: evidences from in vitro experiments.
Article in European journal of medical research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Roles of mitophagy and immune infiltration in Parkinson's disease: new perspectives from bioinformatics analysis and A53T transgenic mice.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2026Article
- The Lipid-Oxidative Stress Axis: Novel Therapeutic Targets for Podocytopathy.Journal of inflammation research · 2025Review
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5 authors.
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Abstract
backgroundDysfunction in podocyte mitophagy has been identified as a contributing factor to the onset and progression of diabetic nephropathy (DN), and BMAL1 plays an important role in the regulation of mitophagy. Thus, this study intended to examine the impact of BMAL1 on podocyte mitophagy in DN and elucidate its underlying mechanisms. MATERIALS AND
methodsHigh D-glucose (HG)-treated MPC5 cells was used as a podocyte injury model for investigating the potential roles of BMAL1 in DN. Mitophagy was examined by detecting autophagosomes using transmission electron microscopy, and detecting the colocalization of LC3 and Tom20 using immunofluorescence staining. The interaction between BMAL1 and SIRT1 was conducted by immunoprecipitation (Co-IP) assay.
resultsIn HG-induced podocyte injury model, we found that BMAL1 and SIRT1 mRNA level was significantly decreased, and positively correlated with mitophagy dysfunction. BMAL1 overexpression could ameliorate HG-induced podocyte injury, evidenced by improved cell viability, decreased cell apoptosis and inflammatory cytokines expression (TNF-α, IL-1β, and IL-6). BMAL1 overexpression could promote podocyte mitophagy coupled with increased expression of mitophagy markers PINK1 and Parkin. In terms of mechanism, Co-IP suggested that BMAL1 could interact with SIRT1. SIRT1 inhibitor Ex-527 addition obviously inhibit the effect of BMAL1 overexpression on the mitophagy, demonstrating that BMAL1 may act on mitophagy by SIRT1//PGC-1α axis.
conclusionsOur in vitro experiments demonstrate that BMAL1/SIRT1/PGC-1α pathway may protect podocytes against HG-induced DN through promoting mitophagy.
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