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Research Article: Empagliflozin attenuates AGE-BSA/high-glucose-induced inflammation in C2C12 myotubes associated with suppression of the RAGE/NF-?B pathway

Date Published: 2026-08-18

Abstract:
Empagliflozin is an established sodium-glucose cotransporter 2 inhibitor with reported anti-inflammatory activity, but its effects on advanced glycation end product/high-glucose-induced inflammatory injury in skeletal muscle cells remain unclear. A GEO-derived transcriptomic dataset from gastrocnemius muscle of type 2 diabetes mellitus rats was analyzed to screen pathways associated with diabetes-related skeletal muscle injury, and molecular docking was performed to explore the possible structural compatibility between empagliflozin and RAGE. Differentiated C2C12 myotubes were exposed to AGE-BSA under high-glucose conditions and treated with empagliflozin. Cell viability was assessed using CCK-8, and RAGE, NF-?B, IL-6, and TNF-? were evaluated by qRT-PCR, Western blotting, immunofluorescence, and ELISA. Bioinformatic enrichment highlighted AGE-RAGE signaling and inflammation-related NF-?B pathways in diabetic skeletal muscle. Molecular docking provided a computational structural hypothesis suggesting possible compatibility between empagliflozin and human RAGE involving Asp160. In AGE-BSA/high-glucose-stimulated C2C12 myotubes, empagliflozin improved cell viability and was accompanied by reduced RAGE expression, lower NF-?B phosphorylation and immunofluorescence-based nuclear accumulation, and lower IL-6 and TNF-? expression and secretion. Empagliflozin attenuates AGE-BSA/high-glucose-induced inflammatory injury in C2C12 myotubes, and this effect is associated with reduced activation of RAGE/NF-?B-related inflammatory signaling. Further gain- or loss-of-function experiments and validation in diabetic animal models are required to determine whether this pathway is causally involved and whether the observed cell-based effect can be translated into an in vivo setting.

Introduction:
Empagliflozin is an established sodium-glucose cotransporter 2 inhibitor with reported anti-inflammatory activity, but its effects on advanced glycation end product/high-glucose-induced inflammatory injury in skeletal muscle cells remain unclear.

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