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中华神经创伤外科电子杂志 ›› 2024, Vol. 10 ›› Issue (05) : 263 -272. doi: 10.3877/cma.j.issn.2095-9141.2024.05.002

基础研究

circ-SESN2 沉默靶向调控miRNA-23a-5p/ULK1 在神经细胞氧化应激损伤中的作用机制研究
李京1, 牛博1, 刘晓蓓2, 魏新雪2, 黄荣1,()   
  1. 1. 830011 乌鲁木齐,新疆医科大学第五附属医院神经外科
    2. 830011 乌鲁木齐,新疆医科大学第五附属医院影像科
  • 收稿日期:2024-07-09 出版日期:2024-10-15
  • 通信作者: 黄荣
  • 基金资助:
    新疆维吾尔自治区自然科学基金(2023D01C150)

Mechanism of circ-SESN2 silencing in modulating neuronal cell oxidative stress injury through regulation of miRNA-23a-5p/ULK1

Jing Li1, Bo Niu1, Xiaobei Liu2, Xinxue Wei2, Rong Huang1,()   

  1. 1. Department of Neurosurgery,The Fifth Affiliated Hospital of Xinjiang Medical University,Urumqi 830011,China
    2. Department of Imaging, The Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi 830011,China
  • Received:2024-07-09 Published:2024-10-15
  • Corresponding author: Rong Huang
引用本文:

李京, 牛博, 刘晓蓓, 魏新雪, 黄荣. circ-SESN2 沉默靶向调控miRNA-23a-5p/ULK1 在神经细胞氧化应激损伤中的作用机制研究[J/OL]. 中华神经创伤外科电子杂志, 2024, 10(05): 263-272.

Jing Li, Bo Niu, Xiaobei Liu, Xinxue Wei, Rong Huang. Mechanism of circ-SESN2 silencing in modulating neuronal cell oxidative stress injury through regulation of miRNA-23a-5p/ULK1[J/OL]. Chinese Journal of Neurotraumatic Surgery(Electronic Edition), 2024, 10(05): 263-272.

目的

探究神经细胞氧化应激损伤模型中circ-SESN2沉默对miR-23a-5p与ULK1通路的靶向调控机制。

方法

(1)收集B35 细胞,分别加入不同浓度(0、100、200、400、600、800 μmol/L)H2O2干预24 h,采用CCK-8和流式细胞仪检测细胞状态,确定H2O2诱导B35细胞氧化应激损伤的最佳条件。(2)将B35细胞分别转染含有circ-SESN2的3’UTR野生型(WT)和突变型(MT)质粒后,分为circ-SESN2-3’UTR WT+miR-NC 组、circ-SESN2-3’UTR WT+miR-23a-5p 组、circ-SESN2-3’UTR MT+miR-NC组和circ-SESN2-3’UTR MT+miR-23a-5p组。采用双荧光素酶活性检测circ-SESN2基因表达情况,验证circ-SESN2与miRNA-23a-5p的靶向结合关系。(3)比较不同siRNA浓度(0.1、0.01 μmol/L)和不同转染时长(24、48 h)的转染效果,以及3 个不同靶点(siRNA-circ-SESN2-1156、1227、1692)对circ-SESN2的沉默效果,确定siRNA 的最佳转染条件和最有效的circ-SESN2 siRNA 靶点。(4)将B35细胞分为空白组、模型组、H/R 模型+siRNA 阴性对照组和H/R 模型+circ-SESN2-siRNA 组,除空白组,其余3 组均加入400 μmol/L H2O2干预24 h,干预后采用CCK-8 和流式细胞仪检测细胞状态,采用生化试剂盒检测氧化应激指标[锰超氧化物歧化酶(Mn-SOD)、总超氧化物歧化酶(T-SOD)、NO、3-硝基酪氨酸(3-NT)],采用qRT-PCR 检测miRNA-23a-5p和ULK1基因表达,使用Western blot 法检测ULK1蛋白的含量。

结果

(1)CCK-8检测和SOD活性检测结果显示,B35细胞的存活率、SOD活性均随H₂O₂浓度的增加而逐渐下降,其中400 μmol/L 组相较于0、100 和200 μmol/L 组的存活率下降明显,400 μmol/L 组相较于0 和100 μmol/L 组的SOD 活性下降明显,差异均有统计学意义(P<0.05),因此将400 μmol/L H₂O₂作为后续实验的氧化应激损伤条件。(2)circ-SESN2-3’UTR WT+miR-23a-5p组的荧光素酶活性显著低于circ-SESN2-3’UTR WT+miR-NC组、circ-SESN2-3’UTR MT+miR-NC组和circ-SESN2-3’UTR MT+miR-23a-5p组,差异均有统计学意义(P<0.05)。(3)转染浓度0.1 μmol/L siRNA 转染48 h 的转染率显著优于其他转染条件(0.01 μmol/L siRNA 转染24 h、0.01 μmol/L siRNA转染48 h、0.1 μmol/L siRNA转染24 h)。靶点筛选中,siRNA-circ-SESN2-1156组、siRNA-circ-SESN2-1227 组和siRNA-circ-SESN2-1692 组的基因水平显著低于空白组和siRNA-NC 组,其中siRNA-circ-SESN2-1692的沉默效果最佳。(4)H/R模型+circ-SESN2-siRNA组的细胞存活率低于空白组,但高于H/R 模型+siRNA 阴性对照组和模型组;H/R 模型+circ-SESN2-siRNA 组的细胞凋亡率高于空白组,但低于H/R 模型+siRNA 阴性对照组和模型组,差异均有统计学意义(P<0.05)。H/R 模型+circ-SESN2-siRNA 组的Mn-SOD、T-SOD 含量较空白组降低,较模型组、H/R 模型+siRNA 阴性对照组升高;NO和3-NT含量较空白组升高,较模型组、H/R模型+siRNA阴性对照组降低,差异均有统计学意义(P<0.05)。荧光定量检测显示,H/R 模型+circ-SESN2-siRNA 组中miRNA-23a-5p较模型组和H/R模型+siRNA 阴性对照组升高,ULK1 较模型组和H/R 模型+siRNA 阴性对照组降低,差异有统计学意义(P<0.05)。

结论

在B35 神经细胞氧化应激模型中,特异性沉默circRNA-SESN2 可能通过SESN2/miRNA-23a-5p/ULK1通路使ULK1表达减少,发挥细胞保护作用。

Objective

To explore the targeted regulatory mechanism of circ-SESN2 silencing on miR-23a-5p and ULK1 pathway in a neuronal oxidative stress model.

Methods

(1) B35 cells were treated with different concentrations (0,100,200,400,600,800 μmol/L)of H2O2 for 24 h.The cell status was detected using CCK-8 method and flow cytometry to determine the optimal conditions for H2O2 induced oxidative stress damage in B35 cells. (2) B35 cells were transfected with wild-type (WT) and mutant(MT)plasmids containing circ-SESN2 and divided into four groups:circ-SESN2-3’UTR WT+miRNC group,circ-SESN2-3’UTR WT+miR-23a-5p group,circ-SESN2-3’UTR MT+miR-NC group,and circ-SESN2-3’UTR MT+miR-23a-5p group. Dual luciferase activity was used to detect the expression of circ-SESN2 gene and verify the targeted binding relationship between circ-SESN2 and miRNA-23a-5p. (3)The transfection effects of siRNA at different concentrations (0.1,0.01 μmol/L)and transfection durations(24,48 h),as well as the silencing effects of 3 different targets(siRNA-ccirc-SESN2-1156,1227,1692)on circ-SESN2 were compared, in order to determine the optimal transfection conditions and most effective circ-SESN2 siRNA targets for siRNA. (4) B35 cells were divided into blank group, model group, H/R model+siRNA negative control group, and H/R model+circ-SESN2-siRNA group. Except for the blank group, all three groups were treated with 400 μmol/L f H2O2 for 24 h. After intervention, the cell status was detected using CCK-8 and flow cytometry, and oxidative stress indicators such as manganese superoxide dismutase (Mn-SOD), total superoxide dismutase (T-SOD), NO, and 3-nitrotyrosine (3-NT)were detected using a biochemical kit. miRNA-23a-5p and ULK1 gene expression were detected using qRT-PCR, and ULK1 protein content was detected using Western blot.

Results

(1) The CCK-8 detection and SOD activity detection results showed that the survival rate and SOD activity of B35 cells gradually decreased with the increase of H2O2 concentration. Among them, the survival rate of the 400 μmol/L group decreased significantly compared to the 0, 100, and 200 μmol/L groups, and the SOD activity of the 400 μmol/L group decreased significantly compared to the 0 and 100 μmol/L groups, with statistical significance (P<0.05). Therefore, 400 μmol/L H2O2 was used as the oxidative stress damage condition for subsequent experiments.(2)The luciferase activity of the circ-SESN2-3’UTR WT+miR-23a-5p group was significantly lower than that of the circ-SESN2-3’UTR WT+miR-NC group,circ-SESN2-3’UTR MT+miR-NC group, and circ-SESN2-3’UTR MT+miR-23a-5p group, with statistical significance (P<0.05). (3) The transfection efficiency of 0.1 μmol/L siRNA transfection for 48 h was significantly better than other transfection conditions (0.01 μmol/L siRNA transfection for 24 h, 0.01 μmol/L siRNA transfection for 48 h, 0.1 μmol/L siRNA transfection for 24 h). In target screening, the gene levels of the siRNA-ccirc-SESN2-1156 group,siRNA-ccirc-SESN2-1227 group,and siRNA-ccirc-SESN2-1692 group were significantly lower than those of the blank group and siRNA-NC group, with siRNA-ccirc-SESN2-1692 showing the best silencing effect. (4) The cell survival rate of the H/R model+circ-SESN2-siRNA group was lower than that of the blank group, but higher than that of the H/R model+siRNA negative control group and the model group; The apoptosis rate of cells in the H/R model+circ-SESN2-siRNA group was higher than that in the blank group, but lower than that in the H/R model+siRNA negative control group and model group, and the differences were statistically significant (P<0.05). The Mn-SOD and T-SOD contents in the H/R model+circ-SESN2-siRNA group were lower than those in the blank group, but higher than those in the model group and the H/R model+siRNA negative control group; The levels of NO and 3-NT increased compared to the blank group, and decreased compared to the model group and the H/R model+siRNA negative control group, with statistically significant differences (P<0.05). Fluorescence quantitative detection showed that miRNA-23a-5p in the H/R model+circ-SESN2-siRNA group was higher than that in the model group and H/R model+siRNA negative control group,while ULK1 was lower than that in the model group and H/R model+siRNA negative control group, with statistical significance (P<0.05).

Conclusion

Silencing circRNA-SESN2 may reduce the expression of ULK1 through the SESN2/miRNA-23a-5p/ULK1 pathway and play a protective role in B35 neurons under oxidative stress.

图1 不同浓度H2O2对B35细胞存活率和SOD活性的影响 A:细胞存活率;B:细胞SOD 活性;与0 μmol/L 比较,aP<0.05;与100 μmol/L 比较,bP<0.05;与200 μmol/L 比较,cP<0.05;与400 μmol/L 比较,dP<0.05;与600 μmol/L比较,eP<0.05
Fig.1 Effects of different concentrations of H2O2 on the viability and SOD activity of B35 cells
图2 2组细胞中circ-SESN2基因表达水平 A:circ-SESN2-1基因表达;B:circ-SESN2-2基因表达
Fig.2 Expression levels of circ-SESN2 gene in two groups of cells
图3 各组双荧光素酶活性检测结果 与circ-SESN2-3’UTR WT+miR-NC 组比较,aP<0.05;与circ-SESN2-3’UTR WT+miR-23a-5p组比较,bP<0.05
Fig.3 Dual luciferase activity detection results of each group
图4 circ-SESN2转染条件摸索过程中B35神经细胞荧光图片(100×) A~B:0.01 μmol/L siRNA 转染24 h 后的细胞明场(A)、暗场(B)图像;C~D:0.01 μmol/L siRNA 转染48 h 后的细胞明场(C)、暗场(D)图像;E~F:0.1 μmol/L siRNA转染24 h后的细胞明场(E)、暗场(F)图像;G~H:0.1 μmol/L siRNA转染48 h后的细胞明场(G)、暗场(H)图像
Fig.4 Fluorescence picture of B35 nerve cells during the exploration of circ-SESN2 transfection conditions(100×)
图5 各组细胞中circ-SESN2基因表达水平 与空白组比较,aP<0.05;与siRNA-NC 比较,bP<0.05;与siRNA-circ-SESN2-1156比较,cP<0.05;与siRNA-circ-SESN2-1227比较,dP<0.05
Fig.5 circ-SESN2 gene expression levels in each group of cells
图6 circ-SESN2-siRNA干预效果评估:存活率与凋亡率对比 A:细胞存活率;B:细胞凋亡率;与空白组比较,aP<0.05;与模型组比较,bP<0.05;与H/R模型+siRNA阴性对照组比较,cP<0.05
Fig.6 Evaluation of circ-SESN2-siRNA intervention effect:comparison of survival rate and apoptosis rate
表1 各组细胞中氧化应激指标含量比较(±s
Tab.1 Comparison of oxidative stress index content in different groups of cells (Mean±SD
表2 各组细胞中基因表达水平比较(±s
Tab.2 Comparison of gene expression levels among different groups of cells(Mean±SD
图7 各组ULK1蛋白表达水平比较 A:各组ULK1蛋白定量表达比较;B:Western blot 检测条带图;与空白组比较,aP<0.05;与模型组比较,bP<0.05;与H/R 模型+siRNA 阴性对照组比较,cP<0.05
Fig.7 Comparison of ULK1 protein expression levels among different groups
[1]
《中国脑卒中防治报告2021》编写组.《中国脑卒中防治报告2021》概要[J].中国脑血管病杂志,2023, 20(11): 783-792, 封3.DOI:10.3969/j.issn.1672-5921.2023.11.009.Report on Stroke Prevention and Treatment in China Writing Group. Brief report on stroke prevention and treatment in China,2021[J]. Chin J Cerebrovasc Dis, 2023, 20(11): 783-792, cover three.DOI:10.3969/j.issn.1672-5921.2023.11.009.
[2]
Prakash R, Vyawahare A, Sakla R, et al. NLRP3 inflammasometargeting nanomicelles for preventing ischemia-reperfusion-induced inflammatory injury[J]. ACS Nano, 2023, 17(9): 8680-8693. DOI:10.1021/acsnano.3c01760.
[3]
Cuomo O, Cepparulo P, Anzilotti S, et al. Anti-miR-223-5p ameliorates ischemic damage and improves neurological function by preventing NCKX2 downregulation after ischemia in rats[J].Mol Ther Nucleic Acids,2019,18:1063-1071.DOI:10.1016/j.omtn.2019.10.022.
[4]
Wang J, Wang Y. Circular RNA cerebellar degeneration-related protein 1 antisense RNA (Circ-CDR1as) downregulation induced by dexmedetomidine treatment protects hippocampal neurons against hypoxia/reoxygenation injury through the microRNA-28-3p (miR-28-3p)/tumor necrosis factor receptor-associated factor-3(TRAF3) axis[J]. Bioengineered, 2021, 12(2): 10512-10524. DOI:10.1080/21655979.2021.1999369.
[5]
Li X, Wang Z, Docarmo JM, et al. Sestrin2 prevents excessive cardiac ischemia/reperfusion injury by regulating unfolded protein response[J].Circulation,2022,146(Suppl_1):abstract 14972.DOI:10.1161/circ.146.suppl_1.14972.
[6]
Bi D, Zheng D, Shi M, et al. Role of SESTRIN2/AMPK/ULK1 pathway activation and lysosomes dysfunction in NaAsO2-induced liver injury under oxidative stress[J].Ecotoxicol Environ Saf,2023,254:114751.DOI:10.1016/j.ecoenv.2023.114751.
[7]
Gross AS, Ghillebert R, Schuetter M, et al. A metabolite sensor subunit of the Atg1/ULK complex regulates selective autophagy[J]. Nat Cell Biol, 2024, 26(3): 366-377. DOI: 10.1038/s41556-024-01348-4.
[8]
黄荣. miR-34b/miR-23a 靶向Keap1/ULK1 调控脑缺血再灌注氧化损伤的机制研究[D].乌鲁木齐:新疆医科大学,2019.Huang R. miR-34b/miR-23a targets Keap1/ULK1 to regulate cerebral ischemia-reperfusion oxidative injury and its mechanism[D].Urumqi:Xinjiang Medical University,2019.
[9]
韩云飞,朱武生.《中国急性缺血性卒中早期血管内介入诊疗指南2022》解读[J]. 临床内科杂志, 2023, 40(7): 497-499. DOI:10.3969/j.issn.1001-9057.2023.07.020.Han YF, Zhu WS. Interpretation of Chinese guidelines for the early endovascular treatment of acute ischemic stroke 2022[J]. J Clin Intern Med,2023,40(7):497-499.DOI:10.3969/j.issn.1001-9057.2023.07.020.
[10]
都一鸣,陈鑫,赵世光.急性缺血性脑卒中氧化应激机制的研究进展[J]. 中华神经创伤外科电子杂志, 2021, 7(2): 121-124.DOI:10.3877/cma.j.issn.2095-9141.2021.02.013.Du YM, Chen X, Zhao SG. Progress of mechanism of oxidative stress in acute ischemic stroke[J]. Chin J Neurotrauma Surg(Electronic Edition),2021,7(2):121-124.DOI:10.3877/cma.j.issn.2095-9141.2021.02.013.
[11]
Kim H, An S, Ro SH, et al. Janus-faced Sestrin2 controls ROS and mTOR signalling through two separate functional domains[J].Nat Commun,2015,6:10025.DOI:10.1038/ncomms10025.
[12]
Ren D, He Z, Fedorova J, et al. Sestrin2 maintains oxphos integrity to modulate cardiac substrate metabolism during ischemia and reperfusion[J]. Redox Biol, 2021, 38: 101824. DOI:10.1016/j.redox.2020.101824.
[13]
Rongjin H, Feng C, Jun K, et al. Oxidative stress-induced protein of Sestrin2 in cardioprotection effect[J]. Dis Markers, 2022, 2022:7439878.DOI:10.1155/2022/7439878.
[14]
Liu Y, Li M, Sun M, et al. Sestrin2 is an endogenous antioxidant that improves contractile function in the heart during exposure to ischemia and reperfusion stress[J]. Free Radic Biol Med, 2021,165:385-394.DOI:10.1016/j.freeradbiomed.2021.01.048.
[15]
Lee JH, Budanov AV, Karin M. Sestrins orchestrate cellular metabolism to attenuate aging[J]. Cell Metab, 2013, 18(6): 792-801.DOI:10.1016/j.cmet.2013.08.018.
[16]
Wang J, Du H, Sun Q, et al. The promotion of sestrin2/AMPK signaling by HIF-1α overexpression enhances the damage caused by acute myocardial infarction[J]. BMC Cardiovasc Disord, 2023,23(1):571.DOI:10.1186/s12872-023-03604-1.
[17]
Yang K, Wu J, Li S, et al. NTRK1 knockdown induces mouse cognitive impairment and hippocampal neuronal damage through mitophagy suppression via inactivating the AMPK/ULK1/FUNDC1 pathway[J]. Cell Death Discov, 2023, 9(1): 404. DOI: 10.1038/s41420-023-01685-7.
[18]
Lu QB, Ding Y, Liu Y, et al. Metrnl ameliorates diabetic cardiomyopathy via inactivation of cGAS/STING signaling dependent on LKB1/AMPK/ULK1-mediated autophagy[J]. J Adv Res, 2023,51:161-179.DOI:10.1016/j.jare.2022.10.014.
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