普鲁卡因对缺氧诱导的N9细胞、PC12细胞损伤的影响及分子机制
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(海口市第三人民医院麻醉科,海南省海口市571138)

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陈基胜,主治医师,研究方向为麻醉学,E-mail:cxmgha@163.com。通信作者符明君,副主任医师,研究方向为麻醉相关基础研究,E-mail:1083645733@qq.com。

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海南省医药卫生科研项目(1501032021A2001)


Effects of procaine on hypoxia induced injury of N9 and PC12 cells and its molecular mechanism
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Department of Anesthesiology, Haikou Third People's Hospital, Haikou, Hainan 571138, China)

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    摘要:

    目的]探讨普鲁卡因对缺氧诱导的N9细胞、PC12细胞损伤的影响及分子机制。 [方法]N9细胞、PC12细胞分为对照组、缺氧组、低、中、高剂量普鲁卡因组(缺氧+2、6、18 mg/L普鲁卡因)、anti-miR-con组、anti-miR-369-3p组、miR-con+高剂量普鲁卡因组(转染miR-con+缺氧+18 mg/L普鲁卡因)、miR-369-3p+高剂量普鲁卡因组(转染miR-369-3p+缺氧+18 mg/L普鲁卡因)。流式细胞术检测细胞凋亡,试剂盒检测细胞中活性氧(ROS)、丙二醛(MDA)含量及超氧化物歧化酶(SOD)活性,ELISA检测炎症因子肿瘤坏死因子α(TNF-α)、白细胞介素1β(IL-1β)和白细胞介素6(IL-6)水平,RT-qPCR检测miR-369-3p表达水平。 [结果]相比于对照组,缺氧组N9细胞、PC12细胞凋亡率升高,MDA、ROS含量升高,SOD活性降低,TNF-α、IL-1β、IL-6水平升高,miR-369-3p表达水平升高(P<0.05)。相比于缺氧组,低、中、高剂量普鲁卡因组N9细胞和PC12细胞凋亡率降低,MDA、ROS含量降低,SOD活性升高,TNF-α、IL-1β、IL-6水平降低,miR-369-3p表达水平降低,且均具有浓度依赖性(P<0.05);相比于anti-miR-con组,anti-miR-369-3p组N9细胞和PC12细胞凋亡率降低,ROS和MDA含量降低,SOD活性升高,TNF-α、IL-1β、IL-6水平降低(P<0.05)。相比于miR-con+高剂量普鲁卡因组,miR-369-3p+高剂量普鲁卡因组N9细胞和PC12细胞凋亡率升高,cleaved Caspase-3蛋白表达水平升高,MDA、ROS含量升高,SOD活性降低,TNF-α、IL-1β、IL-6水平升高(P<0.05)。 [结论]普鲁卡因可减轻缺氧诱导的N9细胞和PC12细胞损伤,其机制可能与抑制miR-369-3p表达有关。

    Abstract:

    Aim To explore the effect and molecular mechanism of procaine on hypoxia induced injury of N9 and PC12 cells. Methods N9 cells and PC12 cells were divided into control group, hypoxia group, low, medium and high dose (hypoxia+2,6, 18 mg/L procaine) procaine group, anti-miR-con group, anti-miR-369-3p group, miR-con+high dose procaine group (transfection miR-con+hypoxia+18 mg/L procaine), miR-369-3p+high dose procaine group (transfection miR-369-3p+hypoxia+18 mg/L procaine). Flow cytometry was used to detect apoptosis, reagent kit was used to detect the content of reactive oxygen species (ROS) and malondialdehyde (MDA) and the activity of superoxide dismutase (SOD), ELISA was used to detect the levels of inflammatory factors such as tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β) and interleukin-6 (IL-6). RT-qPCR was used to detect the expression of miR-369-3p. Results Compared with the control group, the apoptosis rate of N9 cells and PC12 cells in the hypoxia group increased, the content of MDA and ROS increased, the activity of SOD decreased, the levels of TNF-α, IL-1β and IL-6 increased, the expression of miR-369-3p increased (P<0.05). Compared with the hypoxia group, the apoptosis rate of N9 cells and PC12 cells in the low, medium and high dose procaine groups decreased, the content of MDA and ROS decreased, the activity of SOD increased, the levels of TNF-α, IL-1β and IL-6 decreased, the expression of miR-369-3p decreased in a concentration dependent manner (P<0.05). Compared with the anti-miR-con group, the apoptosis rate of N9 cells and PC12 cells in the anti-miR-369-3p group decreased, the content of ROS and MDA decreased, the activity of SOD increased, the levels of TNF-α, IL-1β and IL-6 decreased (P<0.05). Compared with miR-con+high dose procaine group, the apoptosis rate of N9 cells and PC12 cells in miR-369-3p+high dose procaine group increased, the expression of cleaved Caspase-3 protein increased, the content of MDA and ROS increased, the activity of SOD decreased, the levels of TNF-α, IL-1β and IL-6 increased (P<0.05). Conclusion Procaine can reduce hypoxia induced injury to N9 and PC12 cells, and its mechanism may be related to inhibiting the expression of miR-369-3p.

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陈基胜,符明君,林玉美.普鲁卡因对缺氧诱导的N9细胞、PC12细胞损伤的影响及分子机制[J].中国动脉硬化杂志,2023,31(6):473~480.

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  • 收稿日期:2022-08-18
  • 最后修改日期:2022-12-06
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  • 在线发布日期: 2023-06-12