Effect of oleanolic acid on inflammatory injury of pancreatic acinar cells induced by lipopolysaccharide in rats by regulating SDF-1/CXCR4 signal axis
10.3969/j.issn.1000-484X.2025.06.018
- VernacularTitle:齐墩果酸调节SDF-1/CXCR4信号轴对脂多糖致大鼠胰腺腺泡细胞炎症损伤的影响
- Author:
Xiaoli TENG
1
;
Xiaoli ZHOU
1
;
Qingbin MENG
1
;
Nian WANG
1
;
Yan LIAO
1
;
Ying WAN
1
Author Information
1. 武汉市第一医院消化内科,武汉 430022
- Publication Type:Journal Article
- Keywords:
Oleanolic acid;
Stromal cell-derived factor-1/CXC chemokine receptor-4 pathway;
LPS;
Pancreatic acinar cells;
Inflammation
- From:
Chinese Journal of Immunology
2025;41(6):1365-1370
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the effect of oleanolic acid(OA)on inflammatory injury of pancreatic acinar cells in-duced by lipopolysaccharide(LPS)by regulating stromal cell-derived factor-1(SDF-1)/CXC chemokine receptor 4(CXCR4)signal axis.Methods:Rat pancreatic acinar cells AR42J were treated with 5,10,20 and 40 μmol/L OA,and the cell viability was detected using CCK-8 method to determine the optimal dosage for subsequent experimental OA treatment;AR42J cells were randomly divided into control group(NC),LPS group(10 mg/L LPS),OA low-dose group(OA-L group,10 mg/L LPS+5 μmol/L OA),OA medium dose group(OA-M group,10 mg/L LPS+10 μmol/L OA),OA high-dose group(OA-H group,10 mg/L LPS+20 μmol/L OA),Rr-SDF-1 activator(SDF-1)group(10 mg/L LPS+20 ng/ml Rr-SDF-1)and OA-H+Rr-SDF-1 group(10 mg/L LPS+20 μmol/L OA+20 ng/ml Rr-SDF-1).CCK-8 method and EdU staining were applied to detect proliferation of AR42J cells;flow cytometry was applied to detect apoptosis of AR42J cells;activity of superoxide dismutase(SOD)and content of malondialdehyde(MDA)in cell supernatant were detected by spectrophotometry;ELISA was applied to detect levels of IL-6 and TNF-α in cell supernatant;Western blot was applied to detect expressions of CyclinD1,Bcl-2 associated X protein(Bax),SDF-1 and CXCR4 proteins in cells.Results:5,10 and 20 μmol/L OA were selected as the low,medium and high doses for subsequent treatment of AR42J cells;compared with NC group,A450 value,EdU positive cell rate,SOD activity,and CyclinD1 protein expression in LPS group decreased,while apoptosis rate,MDA content,IL-6,TNF-α levels,Bax,SDF-1 and CXCR4 protein expressions increased(P<0.05);compared with LPS group,A450 value,EdU positive cell rate,SOD activity,and CyclinD1 protein expression in OA-L group,OA-M group and OA-H group increased,while apoptosis rate,MDA content,IL-6,TNF-α levels,Bax,SDF-1 and CXCR4 protein expressions reduced,the change trends of corre-sponding indicators in Rr-SDF-1 group was opposite to the above(P<0.05);compared with OA-H group,A450 value,EdU positive cell rate,SOD activity,and CyclinD1 protein expression in OA-H+Rr-SDF-1 group decreased,while apoptosis rate,MDA content,IL-6,TNF-α levels,Bax,SDF-1 and CXCR4 protein expressions increased(P<0.05).Conclusion:OA may alleviate LPS induced inflam-matory damage to pancreatic acinar cells in rats by inhibiting the SDF-1/CXCR4 pathway.
