Salidroside facilitates therapeutic angiogenesis in diabetic hindlimb ischemia by inhibiting ferroptosis - 03/02/23
, Shourong Wu a, b, c, ⁎ 
Abstract |
Hindlimb ischemia (HLI), in which blood perfusion to the hindlimb is obstructed, is one of the major complications of diabetes. Skeletal muscle cells are crucial for revascularization as they can secrete various angiogenic factors; however, hyperglycemia impairs their viability and subsequently their angiogenic potential. Salidroside can promote skeletal muscle cell viability under hyperglycemia; however, the molecular mechanism is still poorly understood. Here we revealed that salidroside could suppress hyperglycemia-induced ferroptosis in skeletal muscle cells by promoting GPX4 expression, thereby restoring their viability and paracrine functions. These in turn promoted the proliferation and migration potentials of blood vessel-forming cells. Furthermore, we showed that salidroside/GPX4-mediated ferroptosis inhibition is crucial for promoting angiogenesis and blood perfusion recovery in diabetic HLI mice. Together, we reveal a novel molecular mechanism of salidroside in enhancing skeletal muscle cells-mediated revascularization and blood perfusion recovery in diabetic HLI mice, further highlighting it as a potential compound for treating diabetic HLI.
Le texte complet de cet article est disponible en PDF.Graphical Abstract |
Highlights |
• | Salidroside suppresses hyperglycemia-induced skeletal muscle cells ferroptosis. |
• | Salidroside restores GPX4 expression in skeletal muscle cells under hyperglycemia. |
• | Salidroside restores skeletal muscle cell angiogenic potential under hyperglycemia. |
• | Intramuscularly-injected salidroside promotes angiogenesis in diabetic HLI mice. |
• | Intramuscularly-injected salidroside recovers blood perfusion in diabetic HLI mice. |
Abbreviations : HLI, GPX4, VEGF-A, PDGF-BB, HGF, FGF2, ANG1, HUVECs, MOVAS, DMEM, FBS, PBS, STZ, RSL3, ELISA, 4-HNE, MDA, qRT-PCR, ROS, α-SMA, PECAM-1, PI, AGEs, GSH, GCLC, GCLM, GSS, SLC3A2, SLC7A11, HG, NG, SA
Keywords : Diabetic HLI, Therapeutic angiogenesis, Salidroside, Skeletal muscle cells, Ferroptosis
Plan
Vol 159
Article 114245- mars 2023 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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