Bioinformatics analysis combined with experimental validation reveals the novel mechanisms of multi-targets of dapagliflozin attenuating diabetic liver injury

Pengyu Wang^1,2Zhen Sun³Qing Lan^1,2,4Shuo Zhang^1,2Yan Song^1,2Leiming Yang^1,2Mi Chen¹Jianfen Shen^5*Qi Huang^1,2*Youzhi Zhang^1,2*

• ¹Hubei Key Laboratory of Diabetes and Angiopathy, School of Pharmacy, Hubei University of Science and Technology, Xianning, 437100, P.R. China., Xianning, China
• ²2.Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Hubei University of Science and Technology, Xianning, 437100, P.R. China., Xianning, China
• ³School of Medicine, Shanghai Jiao Tong University, Shanghai, Shanghai Municipality, China
• ⁴Experimental Animal Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, 510623, Guangdong, China., Guangzhou, China
• ⁵Department of Central Laboratory, The Affiliated Hospital of Jiaxing University , Jiaxing, Zhejiang, China., Jiaxing, China

Objective: Diabetic liver injury, a chronic complication of diabetes mellitus (DM), has been extensively documented. Dapagliflozin, a sodium-glucose co-transporter 2 (SGLT2) inhibitor, has shown significant therapeutic benefits in clinical trials for the management of diabetes However, the specific mechanism on the treatment of diabetic liver injury with dapagliflozin is not fully understood. Therefore, this study aims to further explore the potential mechanism of dapagliflozin on diabetic liver injury based on bioinformatics analysis and experimental verification.Methods: Diabetic liver injury was induced by a high-fat diet combined with STZ in mice. Biochemical kit detection and H&E staining were used to observe lipid aggregation and oxidative stress in liver tissue. Moreover, the expression of inflammatory and apoptosis-related factors was detected using western blotting (WB) and quantitative polymerase chain reaction (qPCR). Subsequently, differential expressions genes analysis, weighted gene co-expression network analysis (WGCNA), single-cell sequencing analysis, as well as molecular docking was conducted based on the Gene Expression Omnibus (GEO) and pharmacology databases. Finally, WB and qPCR were performed to validate the mechanism of dapagliflozin on diabetic liver injury in vivo and in vitro.Results: Dapagliflozin alleviated diabetic liver injury by decreasing lipid deposition, oxidative stress levels, the inflammatary and apoptosis-related proteins and mRNA levels, while it also reducing blood glucose. Mechanically, 78 overlapping genes of dapagliflozin and diabetic liver injury were obtained. Notably, Mapk3, Mapk1, Ikbkb, and Nfkb1 as the hub genes involved in dapagliflozin attenuating diabetic liver injury were identified, and dapagliflozin exhibited better affinity with these proteins.Moreover, dapagliflozin inhibited the elevated protein (genes) levels of ERK1/2 (Mapk3, Mapk1), IKK β (Ikbkb), and NF-κB (Nfkb1), which are induced by diabetic liver injury, as confirmed by both in vivo and in vitro experiments.: Dapagliflozin ameliorated diabetic liver injury by inhibiting the ERK/IKK β /NF-κ B signaling pathway, as demonstrated by bioinformatics analysis combined with in vivo and in vitro experiments.