实用医学杂志 ›› 2024, Vol. 40 ›› Issue (8): 1101-1107.doi: 10.3969/j.issn.1006-5725.2024.08.014

• 基础研究 • 上一篇    下一篇

TA-siRNA纳米凝胶靶向抑制PNI施万细胞Gzmb基因表达促进神经修复

杨俊1,2,刘兆锋2,谢思远2,覃汉俊3,朱煜华2,吴珺1   

  1. 1.中国人民解放军陆军第七十四集团军医院(原解放军第四二一医院) (广州 510220 )
    2.南方医科大学南方医院 (广州 516006 )
    3.南方科技大学第一附属医院,深圳市人民医院 (广东 深圳 518020 )
  • 收稿日期:2024-02-01 出版日期:2024-04-25 发布日期:2024-04-19
  • 基金资助:
    军队医学科技青年培育计划(拔尖项目)(19QNP005);南方医科大学南方医院临床研究专项(2022CR006);南方医科大学南方医院院长基金(2020B028)

TA⁃siRNA nanogel targets to inhibit Gzmb gene expression in Schwann cells of PNI and promote nerve repair

Jun YANG1,2,Zhaofeng LIU2,Siyuan XIE2,Hanjun QIN3,Yuhua ZHU2,Jun. WU1   

  1. *.The 74th Group Army Hospital of PLA (formerly the 421st Hospital of PLA),Guangzhou 510220,China
    *.Nanfang Hospital,Southern Medical University,Guangzhou 516006,China
  • Received:2024-02-01 Online:2024-04-25 Published:2024-04-19

摘要:

目的 构建TA-siRNA纳米凝胶靶向抑制施万细胞死亡。 方法 研究使用GEO数据库GSE244328的转录组测序数据进行生物信息学分析筛选焦亡相关基因并通过聚合酶链反应和蛋白质印记分析评估特定基因的表达水平。使用来自美国ATCC的小鼠施万细胞,采用LPS模拟炎症刺激。制备自组装TA-siRNA纳米凝胶,采用CCK8细胞增殖实验、骨架染色、划痕实验评估TA-siRNA纳米凝胶细胞功能。使用GraphPad Prism 8、ImageJ和R 4.2.1进行统计学差异分析。 结果 Gzmb基因在施万细胞的焦亡过程中显著高表达(P < 0.05)。TA-siRNA纳米凝胶具有优异的生物相容性,其大小为(68.65 ± 7.35) nm,电位为-36.48 mV,可被施万细胞有效内化,且不会导致施万细胞的伸长和变形(P > 0.05)。TA-siRNA纳米凝胶能有效抑制施万细胞的Gzmb基因从而抑制施万细胞焦亡并提高施万细胞的存活率与活性(P < 0.05)。 结论 鉴于施万细胞焦亡在PNI中的作用,TA-siRNA纳米凝胶抑制施万细胞焦亡可能是未来PNI的一种潜在治疗策略。

关键词: 周围神经损伤, 施万细胞, 纳米凝胶

Abstract:

Objective To constructed a TA-siRNA nanogel to target the inhibition of Schwann cell death. Methods The study used the transcriptome sequencing data of GEO database GSE244328 for bioinformatics analysis to screen pyroptosis-related genes and evaluated the expression level of specific genes through polymerase chain reaction and protein imprint analysis. Mouse Schwann cells from the American ATCC were used, and LPS was used to simulate inflammatory stimulation. Self-assembled TA-siRNA nanogels were prepared, and CCK8 kit experiments, cytoskeleton staining, and scratch experiments were used to evaluate the cell function of TA-siRNA nanogels. GraphPad Prism 8, ImageJ, and R 4.2.1 were used for statistical difference analysis, with P < 0.05 as the statistical difference standard. Results The Gzmb gene was significantly (P < 0.05) highly expressed during the pyroptosis of Schwann cells. TA-siRNA nanogel had excellent biocompatibility with a size of 68.65 ± 7.35 nm and a potential of -36.48 mV, which could be effectively internalized by Schwann cells and did not lead to the elongation and deformation of Schwann cells (P > 0.05). TA-siRNA nanogel could effectively inhibit the Gzmb gene of Schwann cells, thus inhibiting the death of Schwann cells and increasing the survival rate and activity of Schwann cells (P < 0.05). Conclusion Given the role of Schwann cells in PNI, TA-siRNA nanogel inhibition of Schwann cell pyroptosis may be a potential treatment strategy for PNI in the future.

Key words: peripheral nerve injury, Schwann cells, nanogel

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