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1.甘肃省肿瘤医院,兰州 730000
2.甘肃中医药大学,兰州 730000
3.甘肃省高校重大疾病分子医学与中医药防治研究重点实验室,兰州 730000
孙文平,主治医师,从事肿瘤与衰老研究,Tel:0931-2302543,E-mail:sunwenping82@163.com
伍志伟,博士,副教授,从事细胞生物学与微生物学研究,Tel:0931-5161002,E-mail:wzhiwei@aliyun.com
收稿日期:2021-01-19,
网络出版日期:2021-04-16,
纸质出版日期:2021-06-20
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孙文平,伍志伟,薛娜.归芪定年方通过调节JAK2/STAT通路活性延缓小鼠肾系膜细胞衰老[J].中国实验方剂学杂志,2021,27(12):67-73.
SUN Wen-ping,WU Zhi-wei,XUE Na.Guiqi Dingnian Prescription Delays Senescence of Mouse Mesangial Cells by Regulating JAK2/STAT Pathway Activity[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(12):67-73.
孙文平,伍志伟,薛娜.归芪定年方通过调节JAK2/STAT通路活性延缓小鼠肾系膜细胞衰老[J].中国实验方剂学杂志,2021,27(12):67-73. DOI: 10.13422/j.cnki.syfjx.20211292.
SUN Wen-ping,WU Zhi-wei,XUE Na.Guiqi Dingnian Prescription Delays Senescence of Mouse Mesangial Cells by Regulating JAK2/STAT Pathway Activity[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(12):67-73. DOI: 10.13422/j.cnki.syfjx.20211292.
目的
2
探讨归芪定年方(GDP)对
D
-半乳糖(
D
-gal)诱导致衰型小鼠肾系膜细胞中Janus酪氨酸蛋白激酶2(JAK2)/信号转导与转录激活因子(STAT)信号通路相关分子表达水平的影响。
方法
2
以
D
-gal 10 g·L
-1
诱导复制小鼠肾系膜细胞衰老模型,经GDP 40 mg·L
-1
水煎剂处理3 d后,衰老相关
β
-半乳糖苷酶(SA-
β
-gal)染色测定细胞衰老状态,流式细胞术检测细胞周期,细胞增殖与活性检测(CCK-8)法检测细胞存活率,实时荧光定量聚合酶链式反应(Real-time PCR)检测肿瘤坏死因子-
α
(TNF-
α
),白细胞介素-6(IL-6),核转录因子-
κ
B(NF-
κ
B)和白细胞介素-1
α
(IL-1
α
) mRNA表达水平,蛋白免疫印迹法(Western blot)测定细胞中JAK2/STAT信号通路相关分子STAT1,磷酸化STAT1(p-STAT1),STAT3,p-STAT3蛋白水平。
结果
2
CCK-8结果显示GDP最佳药物质量浓度为40 mg·L
-1
。与空白组比较,模型组SA-
β
-gal细胞阳性率显著升高(
P
<
0.01),G
0
/G
1
期细胞百分数明显升高(
P
<
0.05),G
2
/M期和S期细胞百分数显著降低(
P
<
0.01),TNF-
α
,IL-6,NF-
κ
B和IL-1
α
mRNA表达水平显著上调(
P
<
0.01), STAT1,p-STAT1,STAT3和p-STAT3蛋白水平显著升高(
P
<
0.01);与模型组比较,模型+GDP组SA-
β
-gal细胞阳性率明显降低(
P
<
0.05),G
0
/G
1
期百分数明显降低(
P
<
0.05),G
2
/M期和S期细胞百分数显著增加(
P
<
0.01),TNF-
α
,IL-6,NF-
κ
B和IL-1
α
mRNA表达水平明显下调(
P
<
0.05),STAT1,p-STAT1,STAT3和p-STAT3蛋白水平明显降低(
P
<
0.05)。
结论
2
GDP可延缓小鼠肾系膜细胞衰老的进程,其作用机制可能与下调细胞JAK2/STAT通路相关因子的表达水平相关。
Objective
2
To investigate the effects of Guiqi Dingnian prescription (GDP) on the expression of related molecules in Janus tyrosine kinase 2 (JAK2)/signal transducer and activator of transcription (JAK2/STAT) signaling pathway of
D
-galactose (
D
-gal)-induced senescent mesangial cells.
Method
2
The senescent mouse mesangial cells induced by 10 g·L
-1
D
-gal were continuously treated with 40 mg·L
-1
GDP for three days. The senescence of the treated cells was determined by senescence-associated (SA)-
β
-gal staining. The cell cycle was detected by flow cytometry. The cell viability was analyzed using the cell counting kit-8 (CCK-8). The mRNA expression levels of tumor necrosis factor-
α
(TNF-
α
), interleukin-6 (IL-6), nuclear transcription factor-
κ
B (NF-
κ
B), and IL-1
α
were detected by real-time polymerase chain reaction (Real-time PCR). The protein expression levels of STAT1, phosphorylated STAT1 (p-STAT1), STAT3, and p-STAT3 in the JAK2/STAT signaling pathway were determined by Western blot.
Result
2
CCK-8 results showed that the optimal concentration of GDP was 40 mg·L
-1
. Compared with the blank group, the positive rate of SA-
β
-gal in the model group was significantly higher(
P
<
0.01), the percentage of cells in G
0
/G
1
phase was significantly increased(
P
<
0.05), the percentage of cells in G
2
/M and S phase was significantly decreased(
P
<
0.01). The mRNA expression levels of TNF-
α
,IL-6,NF-
κ
B and IL-1
α
were significantly increased(
P
<
0.01). Compared with the model group, the model + GDP group exhibited significantly decreased SA-
β
-gal-positive cells (
P
<
0.05), reduced cells in the G
0
/G
1
phase (
P
<
0.05), increased cells in the G
2
/M and S phases (
P
<
0.01), and down-regulated TNF-
α
, IL-6, NF-
κ
B, and IL-1
α
mRNA expression (
P
<
0.05) and STAT1, p-STAT1, STAT3, and p-STAT3 protein expression (
P
<
0.05).
Conclusion
2
GDP delays the senescence of mouse mesangial cells possibly by down-regulating the expression of related molecules in the JAK2/STAT pathway.
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