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Dapagliflozin alleviates diabetic kidney disease via HIF1α/HO1 mediated ferroptosis

ABSTRACT: To investigate the mechanism of the renal protective effects of SGLT2i in diabetic nephropathy, we treated 9-week db/db mice with dapagliflozin and solvent, respectively. This study used m/m mice as control group.We performed gene expression profiling analysis using data obtained from RNA-seq of 3 different groups of mice after 13-week treatment.

ORGANISM(S): Mus musculus

PROVIDER: GSE228727 | GEO | 2023/05/31

REPOSITORIES: GEO

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Proximal tubular epithelial specific transcriptomics of diabetic mice treated with dapagliflozin

Project description:We show the proximal tubular specific pathway analysis demonstrating the downregulation of oxidative phosphorylation in dapagliflozin treated db/db mice, a type 2 diabetic model. After 8-week treatment of dapagliflozin for db/db mice having proximal tubule specific tdTomato reporter, tdTomato-positive cells were isolated by FACS. Pathway analysis of RNA sequence of isolated tubular epithelia revealed that oxidative phosphorylation was downregulated in dapagliflozin-treated mice. However, depletion of renal tissue ATP content in db/db mice was ameliorated by dapagliflozin administration. Pimonidazole staining demonstrated that renal cortical tissue hypoxia was noted in db/db mice, which was improved by dapagliflozin administration. These findings suggest that dapagliflozin can ameliorated the excessive oxygen and ATP consumption and subsequent tissue hypoxia in diabetic kidney, which may explain, in part, the responsible mechanisms of renoprotecitive effect by dapagliflozin.

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Project description:Male infertility is one of the most common complications of diabetes mellitus (DM). Dapagliflozin is widely used to manage the type II DM. This study aimed to assess the dapagliflozin’s effects on the spermatogenesis by administering either dapagliflozin (Dapa) or a vehicle (db) to diabetic male db/db mice, and using littermate male db/m mice as the control group (Con). We further performed the integrative analyses of the cecal shotgun metagenomics, cecal/plasmatic/testicular metabolomics, and testicular proteomics. We found that dapagliflozin treatment significantly alleviated the diabetes-induced spermatogenic dysfunction by improving sperm quality, including the sperm concentration and the sperm motility. The overall microbial composition was reshaped in Dapa mice and 13 species (such as Lachnospiraceae bacterium 3-1) were regarded as potential beneficial bacteria. Metabolites exhibited modified profiles, in which adenosine, cAMP, and 2’-deoxyinosine being notably altered in the cecum, plasma, and testis, respectively. Testicular protein expression patterns were similar between the Dapa and Con mice. In vivo results indicated that compared with db group, dapagliflozin treatment alleviated apoptosis and oxidative stress in testis tissues by down-regulating 2’-deoxyinosine. This was further validated by in vitro experiments using GC-2 cells. Our findings support the potential use of Dapa to prevent the diabetes-induced impaired sperm quality and to treat diabetic male infertility.

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Dapagliflozin alleviates renal inflammation and protects against diabetic kidney diseases dependent and independent of glucose levels [ATAC-seq]

Project description:Diabetic kidney disease (DKD) has become the leading cause of end-stage renal disease worldwide. Therefore, efforts to understand DKD pathophysiology and prevent its development at the early phase are highly warranted. Here, we analyzed kidneys from healthy mice, diabetic mice, and diabetic mice treated with the sodium-glucose cotransporter 2 inhibitor dapagliflozin. Our combined method of ATAC and RNA sequencing revealed Csf2rb, Btla, and Isg15 as the key candidate genes associated with hyperglycemia, azotemia, and albuminuria. Their protein levels were altered together with multiple other inflammatory cytokines in the diabetic kidney, which was alleviated by dapagliflozin treatment. Cell culture of immortalized renal tubular cells and macrophages unraveled that dapagliflozin could directly effect on these cells in vitro as an anti-inflammatory agent independent of glucose concentrations. We further proved that dapagliflozin attenuated ischemia/reperfusion-induced chronic kidney injury and renal inflammation in mice. Overall, our data emphasize the importance of inflammatory factors to the pathogenesis of DKD, and provide valuable mechanistic insights into the renoprotective role of dapagliflozin.

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Dapagliflozin alleviates renal inflammation and protects against diabetic kidney diseases dependent and independent of glucose levels [RNA-seq]

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Dapagliflozin alleviates diabetic kidney disease via HIF1α/HO1 mediated ferroptosis

Project description:Dapagliflozin alleviates diabetic kidney disease via HIF1α/HO1 mediated ferroptosis

| PRJNA951369 | ENA

Dynaimic changes in glomerular cells in the development of diabetes

Project description:To investigate dynamic changes in glomerular cells, including podocyte, mesangial cells and glomerular endothelial cells, in the development of diabetic nephropathy We then performed gene expression profiling analysis using data obtained from RNA-seq of glomerular cells of control(m/m), diabetic (db-/- 6-week-old) and diabetic nephropathy (db-/- 10-week-old with albuminuria) mice

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