ArticleScientific reports2025
Lipoic acid-plumbagin conjugate protects pancreatic beta cells against high glucose-induced toxicity.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Pancreatic β cells that produce insulin play a significant role in maintaining glucose homeostasis. However, high glucose (HG) causes oxidative stress, which leads to pancreatic β cell dysfunction. The synthesis of lipoic acid (LA) and plumbagin (PLU) conjugate (LA-PLU) was done and characterized using (1H) NMR, (13C) NMR, LC-ESI-MS/MS, and UV-visible spectroscopy techniques. ADME analysis confirmed the drug-like properties of LA-PLU. The present study revealed the protective effect of LA-PLU conjugate against HG (25 mM)-induced oxidative stress on pancreatic β cells. Cell viability was performed on RIN-5F cells and found that LA-PLU exhibits non-toxic up to 91.23 ± 2.61% of cell viability at 12.5 µM concentration. At 12.5 µM, LA-PLU protected pancreatic β cells up to 73.45 ± 3.72% under HG conditions. LA-PLU showed a protective effect on RIN-5F cells against HG-induced DNA damage, followed by preserving mitochondrial membrane potential and decreasing reactive oxygen species formation. Further, LA-PLU showed an anti-apoptotic effect by increasing the Bcl-2 (B cell lymphoma-2) level and decreasing the apoptotic proteins [Bcl-2 associated x (Bax), and cleaved caspase-3). Hence, the overall study concludes that LA-PLU could act as a potent antioxidant that protects the RIN-5F cells under HG conditions, resulting in the maintenance of glucose homeostasis.
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