Role of GLUT1-dependent glycolysis in attenuation of oxygen-glucose deprivation-reoxygenation injury by dexmedetomidine in HK-2 cells
- VernacularTitle:GLUT1依赖性的糖酵解在右美托咪定减轻HK-2细胞氧糖剥夺-复氧复糖损伤中的作用
- Author:
Wei DING
1
;
Wen-hui TAO
;
Yu-le WU
;
Jian-xiao WU
;
Jing-yi GUO
;
Li-fang XIE
;
Bing-qian FAN
;
Xue-song GU
;
Yang LI
;
Xian-wen HU
Author Information
- Publication Type:Journal Article
- Keywords: glucose transporter type 1; oxygen-glu-cose deprivation-reoxygenation; glycolysis; dexmedeto-midine; renal tubular epithelial cells; ischemia-reper-fusion
- From: Chinese Pharmacological Bulletin 2025;41(3):444-450
- CountryChina
- Language:Chinese
- Abstract: Aim To evaluate the role of the glucose transporter protein 1(GLUT1)-dependent glycolytic in the attenuation of oxygen-glucose deprivation-reoxygen-ation(OGD/R)injury in HK-2 cells by dexmedetomi-dine(Dex).Methods C57/BL6 mice were random-ly divided into three groups(n=6),namely,sham operation group(Sham group),renal ischemia reper-fusion group(I/R group)and Dex group(I/R+Dex group).Serum creatinine(Cr)and urea nitrogen(BUN)were measured,while the levels of key glyco-lytic enzymes HK2,PFKFB3 and GLUT1 were meas-ured.HK-2 cells were cultured and randomised into seven groups(n=6),which was treated with OGD/R,overexpression or interference with GLUT1,Dex and glycolysis inhibitor 2-DG.CCK-8 and LDH activi-ty were used to detect cellular damage.Glycolysis lev-els were detected by lactate and ECAR.The inflamma-tory level was reflected by qRT-PCR for IL-6 and TNF-α.qRT-PCR and Western blot were performed to de-tect the levels of GLUT1,HK2,and PFKFB3.Results Dex significantly ameliorated kidney injury and HK-2 cell injury(P＜0.05).Dex inhibited the OGD/R-induced rise in lactate and extracellular acidification rate(ECAR),as evidenced by suppression of the ex-pression of GLUT1,HK2 and PFKFB3(P＜0.05).In vitro experiments showed that GLUT1 knockdown sig-nificantly improved OGD/R-induced cellular damage.Lactate,ECAR,glycolysis-related mRNAs and pro-teins were inhibited by GLUT1 knockdown(P＜0.05).Significantly,there were no significant differ-ences in above indexes after Dex treatment based on GLUT1 knockdown.Overexpression of GLUT1 abroga-ted the protective effects of Dex,while reversing the inhibitory effects of Dex on the expression of GLUT1,HK2,and PFKFB3(P＜0.05).Conclusions Dexmedetomidine attenuates OGD/R induced injury in HK-2 cells by inhibiting GLUT1-dependent glycolysis.
