PMID- 35129424 OWN - NLM STAT- MEDLINE DCOM- 20220408 LR - 20220711 IS - 2165-5987 (Electronic) IS - 2165-5979 (Print) IS - 2165-5979 (Linking) VI - 13 IP - 2 DP - 2022 Feb TI - Identification of circular RNAs and functional competing endogenous RNA networks in human proximal tubular epithelial cells treated with sodium-glucose cotransporter 2 inhibitor dapagliflozin in diabetic kidney disease. PG - 3911-3929 LID - 10.1080/21655979.2022.2031391 [doi] AB - Diabetic kidney disease (DKD) is a serious diabetes complication. Sodium-glucose cotransporter 2 inhibitors (SGLT2i) are novel anti-diabetes drugs that confer clinical renal protection. However, the molecular mechanisms involved remain unclear. Here, human proximal tubular epithelial cells (PTECs) were treated with normal glucose, high glucose, and anti-diabetes agents, including SGLT2i (dapagliflozin), metformin, and dipeptidyl peptidase-4 inhibitor (DPP-4i, vildagliptin) and microarray analysis was performed. Firstly, a total of 2,710 differentially expressed circular RNAs (circRNAs) were identified. Secondly, network pharmacology and transcriptomics analyses showed that the effects of dapagliflozin on PTECs primarily involved lipid metabolism, Rap1, and MAPK signaling pathways. Metformin mainly affected the AMPK and FOXO signaling pathways, whereas vildagliptin affected insulin secretion and the HIF-1 signaling pathway. Furthermore, circRNA-miRNA-mRNA networks, real-time reverse transcription-polymerase chain reaction (RT-PCR), and fluorescence in situ hybridization (FISH) assay revealed that the expression of hsa_circRNA_012448 was increased in PTECs treated with high glucose, whereas its expression was reversed by dapagliflozin. Finally, the hsa_circRNA_012448-hsa-miR-29b-2-5p-GSK3beta pathway, involved in the oxidative stress response, was identified as an important pathway mediating the action of dapagliflozin against DKD. Overall, our study provides novel insights into the molecular mechanisms underlying the effects of dapagliflozin on DKD. FAU - Song, Yi AU - Song Y AD - Department of Endocrinology and Metabolism, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China. AD - Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China. FAU - Guo, Feng AU - Guo F AD - Department of Endocrinology and Metabolism, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China. AD - Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China. FAU - Liu, Yifan AU - Liu Y AD - Department of Hepatobiliary Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China. FAU - Huang, Fengjuan AU - Huang F AD - Department of Endocrinology and Metabolism, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China. FAU - Fan, Xunjie AU - Fan X AD - Department of Endocrinology and Metabolism, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China. AD - Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China. FAU - Zhao, Lin AU - Zhao L AD - Department of Endocrinology and Metabolism, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China. FAU - Qin, Guijun AU - Qin G AD - Department of Endocrinology and Metabolism, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Bioengineered JT - Bioengineered JID - 101581063 RN - 0 (Benzhydryl Compounds) RN - 0 (Glucosides) RN - 0 (Hypoglycemic Agents) RN - 0 (MIRN29B1 microRNA, human) RN - 0 (MicroRNAs) RN - 0 (RNA, Circular) RN - 0 (Sodium-Glucose Transporter 2 Inhibitors) RN - 1ULL0QJ8UC (dapagliflozin) RN - 9100L32L2N (Metformin) RN - 9NEZ333N27 (Sodium) RN - I6B4B2U96P (Vildagliptin) RN - IY9XDZ35W2 (Glucose) SB - IM MH - Benzhydryl Compounds MH - *Diabetes Mellitus MH - *Diabetic Nephropathies/drug therapy/genetics/metabolism MH - Epithelial Cells/metabolism MH - Glucose/metabolism MH - Glucosides MH - Humans MH - Hypoglycemic Agents/pharmacology/therapeutic use MH - In Situ Hybridization, Fluorescence MH - *Metformin/therapeutic use MH - MicroRNAs MH - RNA, Circular/genetics MH - Sodium/therapeutic use MH - Sodium-Glucose Transporter 2 Inhibitors/*pharmacology MH - Vildagliptin/therapeutic use PMC - PMC8973950 OTO - NOTNLM OT - Dapagliflozin OT - circRNA OT - competing endogenous RNAs OT - diabetic kidney disease OT - mRNA OT - proximal tubular epithelial cells COIS- No potential conflict of interest was reported by the author(s). EDAT- 2022/02/08 06:00 MHDA- 2022/04/09 06:00 PMCR- 2022/02/07 CRDT- 2022/02/07 12:13 PHST- 2022/02/07 12:13 [entrez] PHST- 2022/02/08 06:00 [pubmed] PHST- 2022/04/09 06:00 [medline] PHST- 2022/02/07 00:00 [pmc-release] AID - 2031391 [pii] AID - 10.1080/21655979.2022.2031391 [doi] PST - ppublish SO - Bioengineered. 2022 Feb;13(2):3911-3929. doi: 10.1080/21655979.2022.2031391.