中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (7): 1321-1327.doi: 10.12307/2024.741

• 细胞相关实验/试验研究Cell related experimental/trial studies •    下一篇

川陈皮素抑制BV2小胶质细胞炎症反应的机制

迟文鑫1,2,张存鑫2,高  凯3,吕超亮2,张科峰2   

  1. 1济宁医学院临床医学院,山东省济宁市   272067;济宁市第一人民医院,2脊柱外科,3关节外科,山东省济宁市   272000
  • 收稿日期:2023-08-21 接受日期:2023-12-14 出版日期:2025-03-08 发布日期:2024-06-27
  • 通讯作者: 张科峰,硕士,副主任医师,济宁市第一人民医院脊柱外科,山东省济宁市 272000 吕超亮,博士,主任医师,济宁市第一人民医院脊柱外科,山东省济宁市 272000
  • 作者简介:迟文鑫,男,1998 年生,山东省临清市人,汉族,在读硕士,主要从事脊髓损伤、脊柱微创方面的研究。
  • 基金资助:
    山东省自然科学基金(ZR2021LZY008),项目负责人:高凯;济宁市重点研发计划项目(2021YXNS137),项目负责人:高凯;济宁市重点研发计划项目(2021YXNS001),项目负责人:吕超亮

Mechanism by which nobiletin inhibits inflammatory response of BV2 microglia

Chi Wenxin1, 2, Zhang Cunxin2, Gao Kai3, Lyu Chaoliang2, Zhang Kefeng2   

  1. 1School of Clinical Medicine, Jining Medical University, Jining 272067, Shandong Province, China; 2Department of Spine Surgery, 3Department of Joint Surgery, Jining No. 1 People’s Hospital, Jining 272000, Shandong Province, China
  • Received:2023-08-21 Accepted:2023-12-14 Online:2025-03-08 Published:2024-06-27
  • Contact: Zhang Kefeng, Master, Associate chief physician, Department of Spine Surgery, Jining No. 1 People’s Hospital, Jining 272000, Shandong Province, China; Lyu Chaoliang, MD, Chief physician, Department of Spine Surgery, Jining No. 1 People’s Hospital, Jining 272000, Shandong Province, China
  • About author:Chi Wenxin, Master candidate, School of Clinical Medicine, Jining Medical University, Jining 272067, Shandong Province, China; Department of Spine Surgery, Jining No. 1 People’s Hospital, Jining 272000, Shandong Province, China
  • Supported by:
    Natural Science Foundation of Shandong Province, No. ZR2021LZY008 (to GK); Jining Key Research & Development Program Project, No. 2021YXNS137 (to GK); Jining Key Research & Development Program Project, No. 2021YXNS001 (to LCL)

摘要:


文题释义:

川陈皮素:是一种来自柑橘皮的聚甲氧基黄酮类化合物,常温下不易溶于水,不溶于非极性溶剂,可溶于甲醇、乙醇、丙酮、醋酸、稀碱溶液及热水,具有抗炎、抗氧化和抗癌特性。
核因子κB信号通路:是一种重要的细胞信号传导途径,可以通过多种途径被激活,例如病原微生物感染、细胞因子刺激、氧化应激、炎症等。核因子κB信号激活后可调节多种基因的表达,包括炎症递质、凋亡相关蛋白、细胞黏附分子和免疫相关基因等。


背景:有研究证实,川陈皮素可改善脂多糖诱导的小胶质细胞异常激活、炎症因子的过度释放和氧化还原失衡,但具体的作用机制尚不充分。
目的:探讨川陈皮素抑制脂多糖诱导BV2小胶质细胞炎症反应的分子机制。
方法:将第3代BV2小胶质细胞分3组处理:对照组常规培养24 h(不进行任何处理),脂多糖组加入10 μg/mL脂多糖处理24 h,脂多糖+川陈皮素组加入20 μmol/L川陈皮素处理6 h后加入10 μg/mL脂多糖处理24 h。处理结束后,采用CCK-8法检测细胞增殖,活性氧荧光探针检测细胞内活性氧水平,qRT-PCR法检测细胞内核因子κB p65、肿瘤坏死因子α、白细胞介素1β mRNA表达,Western Blot法检测细胞内核因子κB p65、p-核因子κB p65、肿瘤坏死因子α、白细胞介素1β蛋白表达。
结果与结论:①与对照组比较,脂多糖组细胞增殖活性降低(P < 0.001);与脂多糖组比较,脂多糖+川陈皮素组细胞增殖活性升高(P < 0.001);②与对照组比较,脂多糖组细胞内活性氧水平升高(P < 0.001);与脂多糖组比较,脂多糖+川陈皮素组细胞内活性氧水平降低(P < 0.01);③与对照组比较,脂多糖组细胞内肿瘤坏死因子α、白细胞介素1β mRNA表达升高(P < 0.001,P < 0.01);与脂多糖组比较,脂多糖+川陈皮素组细胞内肿瘤坏死因子α、白细胞介素1β mRNA表达降低(P < 0.01,P < 0.05);④与对照组比较,脂多糖组细胞内p-核因子κB p65、肿瘤坏死因子α、白细胞介素1β蛋白表达升高(P < 0.001);与脂多糖组比较,脂多糖+川陈皮素组细胞内p-核因子κB p65、肿瘤坏死因子α、白细胞介素1β蛋白表达降低(P < 0.001);⑤结果表明,川陈皮素可能通过抑制核因子κB信号通路减轻脂多糖诱导的BV2小胶质细胞炎症反应。

https://orcid.org/0009-0001-5779-3027 (迟文鑫)


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

关键词: 川陈皮素, 核因子κB, 小胶质细胞, 脂多糖, 脊髓损伤, 细胞增殖, 活性氧, 炎性因子

Abstract: BACKGROUND: Nobiletin has been found to improve lipopolysaccharide-induced abnormal activation of microglia, excessive release of inflammatory factors and redox imbalance. However, the specific mechanism is not fully understood.

OBJECTIVE: To investigate the molecular mechanism by which nobiletin can inhibit lipopolysaccharide-induced inflammation in BV2 microglia.  
METHODS: Passage 3 BV2 microglia were divided into three groups: control group was cultured for 24 hours (without any treatment). Lipopolysaccharide group was treated with 10 μg/mL lipopolysaccharide for 24 hours. Lipopolysaccharide + nobiletin group was treated with 20 μmol/L nobiletin for 6 hours and then 10 μg/mL lipopolysaccharide for 24 hours. After the processing, cell proliferation was detected by CCK-8 assay. The level of intracellular reactive oxygen species was detected by fluorescent probe. The mRNA expression levels of nuclear factor κB p65, tumor necrosis factor α, and interleukin-1β were detected by qRT-PCR. The protein expression levels of nuclear factor κB p65, p-nuclear factor κB p65, tumor necrosis factor α, and interleukin-1β were detected by western blot assay.
RESULTS AND CONCLUSION: (1) Compared with the control group, the proliferation activity of lipopolysaccharide group was decreased (P < 0.001). Compared with the lipopolysaccharide group, the cell proliferation activity of lipopolysaccharide + nobiletin group was increased (P < 0.001). (2) Compared with the control group, the level of intracellular reactive oxygen species was increased in the lipopolysaccharide group (P < 0.001). Compared with the lipopolysaccharide group, the level of intracellular reactive oxygen species was decreased in the lipopolysaccharide + nobiletin group (P < 0.01). (3) Compared with the control group, the mRNA expression levels of tumor necrosis factor α and interleukin-1β were increased in the lipopolysaccharide group (P < 0.001, P < 0.01). Compared with the lipopolysaccharide group, mRNA expression levels of tumor necrosis factor α and interleukin-1β were decreased in the lipopolysaccharide + nobiletin group (P < 0.01, P < 0.05). (4) Compared with the control group, the protein expression levels of p-nuclear factor κB p65, tumor necrosis factor α, and interleukin-1β in were increased the lipopolysaccharide group (P < 0.001). Compared with the lipopolysaccharide group, the expression of p-nuclear factor κB p65, tumor necrosis factor α, and interleukin-1β was decreased in the lipopolysaccharide + nobiletin group (P < 0.001). (5) These findings suggest that nobiletin attenuates lipopolysaccharide-induced inflammatory response in BV2 microglia by suppressing nuclear factor-κB signaling pathway.

Key words: nobiletin, nuclear factor-κB, microglia, lipopolysaccharide, spinal cord injury, cell proliferation, reactive oxygen species, inflammatory factor

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