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- W2899756437 abstract "Sumoylation is a downstream effector of aging/oxidative stress; excess oxidative stress leads to dysregulation of a specificity protein1 (Sp1) and its target genes, such as Peroxiredoxin 6 (Prdx6), resulting in cellular damage. To cope with oxidative stress, cells rely on a signaling pathway involving redox-sensitive genes. Herein, we examined the therapeutic efficacy of the small molecule Ginkgolic acid (GA), a Sumoylation antagonist, to disrupt aberrant Sumoylation signaling in human and mouse lens epithelial cells (LECs) facing oxidative stress or aberrantly expressing Sumo1 (small ubiquitin-like modifier). We found that GA globally reduced aberrant Sumoylation of proteins. In contrast, Betulinic acid (BA), a Sumoylation agonist, augmented the process. GA increased Sp1 and Prdx6 expression by disrupting the Sumoylation signaling, while BA repressed the expression of both molecules. In vitro DNA binding, transactivation, Sumoylation and expression assays revealed that GA enhanced Sp1 binding to GC-boxes in the Prdx6 promoter and upregulated its transcription. Cell viability and intracellular redox status assays showed that LECs pretreated with GA gained resistance against oxidative stress-driven aberrant Sumoylation signaling. Overall, our study revealed an unprecedented role for GA in LECs and provided new mechanistic insights into the use of GA in rescuing LECs from aging/oxidative stress-evoked dysregulation of Sp1/Prdx6 protective molecules." @default.
- W2899756437 created "2018-11-16" @default.
- W2899756437 creator A5010780653 @default.
- W2899756437 creator A5064070682 @default.
- W2899756437 creator A5072279870 @default.
- W2899756437 creator A5084575052 @default.
- W2899756437 date "2018-11-08" @default.
- W2899756437 modified "2023-09-28" @default.
- W2899756437 title "Ginkgolic Acid Rescues Lens Epithelial Cells from Injury Caused by Redox Regulated-Aberrant Sumoylation Signaling by Reviving Prdx6 and Sp1 Expression and Activities" @default.
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- W2899756437 doi "https://doi.org/10.3390/ijms19113520" @default.
- W2899756437 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6274983" @default.
- W2899756437 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30413111" @default.
- W2899756437 hasPublicationYear "2018" @default.
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