MAO Wen,XIA Linying,LIU Xianli,et al.Panax notoginseng Saponins Alleviate TGF-β1-induced Renal Tubular Epithelial Cell Injury by Inhibiting Autophagy[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(20):86-91.
MAO Wen,XIA Linying,LIU Xianli,et al.Panax notoginseng Saponins Alleviate TGF-β1-induced Renal Tubular Epithelial Cell Injury by Inhibiting Autophagy[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(20):86-91. DOI: 10.13422/j.cnki.syfjx.20221304.
saponins (PNS) in inhibiting transforming growth factor-
β
1
(TGF-
β
1
)-induced renal tubular epithelial cell injury.
Method
2
NRK-52E renal tubular epithelial cells were cultured and divided into control group, TGF-
β
1
group,TGF-
β
1
+12.5 mg·L
-1
PNS group,TGF-
β
1
+25 mg·L
-1
PNS group and TGF-
β
1
+50 mg·L
-1
PNS group. After 48 hours of PNS intervention, the cells and the supernatant were collected, and cell morphology was observed by inverted microscope. Western blot was used to detect the expression of epithelial-mesenchymal transition (EMT)-related proteins and autophagy-related proteins. Flow liquid chromatography for multiple protein quantification and flow cytometry were employed to determine the content of inflammatory factors and apoptosis rate, respectively.
Result
2
Compared with the conditions in the control group, after TGF-
β
1
induction, the cells showed a spindle-shaped change and the expression of E-cadherin was down-regulated (
P
<
0.05), while the expression of
α
-smooth muscle actin (
α
-SMA) was up-regulated (
P
<
0.05). After PNS treatment, most of the cells tended to be normal and reversed the occurrence of EMT. In addition, compared with the conditions in the control group, the level of TNF-
α
was increased while that of IL-10 was decreased, with elevated apoptosis rate (
P
<
0.05) in the TGF-
β
1
group. After PNS treatment, the level of TNF-
α
was lowered while that of IL-10 was boosted with the increase of the dose, with reduced apoptosis rate (
P
<
0.05). Moreover, after TGF-
β
1
induction, the expression of autophagy-related proteins Beclin 1 and LC3Ⅱ/Ⅰ in renal tubular epithelial cells were up-regulated, while PNS inhibited their expression(
P
<
0.05,
P
<
0.01).
Conclusion
2
PNS had a protective effect on TGF-
β
1
-induced renal tubular epithelial cells, and the mechanism might be that it reduced inflammation and apoptosis by inhibiting autophagy, thus alleviating TGF-
β
1
-induced injury.
关键词
Keywords
references
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