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[1]高宇星,李澍妶,周春雷,等.KPNB1抑制剂在小鼠移植排斥反应中的作用研究[J].天津医科大学学报,2025,31(01):47-53.[doi:10.20135/j.issn.1006-8147.2025.01.0047]
 GAO Yuxing,LI Shuxuan,ZHOU Chunlei,et al.Study on the role of KPNB1 inhibitor in mouse transplant rejection[J].Journal of Tianjin Medical University,2025,31(01):47-53.[doi:10.20135/j.issn.1006-8147.2025.01.0047]
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KPNB1抑制剂在小鼠移植排斥反应中的作用研究(PDF)
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《天津医科大学学报》[ISSN:1006-8147/CN:12-1259/R]

卷:
31卷
期数:
2025年01期
页码:
47-53
栏目:
基础医学
出版日期:
2025-01-20

文章信息/Info

Title:
Study on the role of KPNB1 inhibitor in mouse transplant rejection
文章编号:
1006-8147(2025)01-0047-07
作者:
高宇星1李澍妶2周春雷2穆红2
(1.天津医科大学一中心临床学院,天津 300192;2.天津市第一中心医院临床检验科,天津 300192)
Author(s):
GAO Yuxing1LI Shuxuan2ZHOU Chunlei2MU Hong2
(1.The First Central Clinical School, Tianjin Medical University, Tianjin 300192, China;2.Department of Clinical Laboratory, Tianjin First Central Hospital, Tianjin 300192, China)
关键词:
INI-43核转运蛋白β1活化T细胞核因子T细胞活化移植排斥
Keywords:
INI-43 KPNB1 NFATT cell activation transplantation rejection
分类号:
R446.1
DOI:
10.20135/j.issn.1006-8147.2025.01.0047
文献标志码:
A
摘要:
目的:探讨核转运蛋白β1(KPNB1)抑制剂入核抑制因子43(INI-43)在小鼠移植排斥反应中的作用。方法:首先进行体外实验,将Jurkat T细胞分为4组:空白组、活化对照组、INI-43低剂量组和INI-43高剂量组;染色质免疫共沉淀技术检测INI-43对活化T细胞核因子(NFAT)与白细胞介素(IL)-2启动子结合水平的作用;双荧光素酶检测INI-43对IL-2启动子报告基因转录活性的影响。而后进行动物实验,将小鼠分为5组:假手术组、模型对照组、环孢素A(CsA)组、INI-43低剂量组和INI-43高剂量组,对实验小鼠进行皮肤移植手术,记录移植物的存活时间;流式细胞技术检测INI-43对小鼠T细胞表面活化分子CD25、CD107a的抑制情况;酶联免疫吸附试验测定小鼠外周血IL-2和干扰素(IFN)-γ水平。结果:Western印迹显示,与活化对照组相比,INI-43低剂量和INI-43高剂量组细胞核内NFAT含量均减少(Z=-1.96、t=20.88,均P<0.05),细胞核内NFAT与IL-2启动子的结合水平均降低(t=5.72、12.51,均P<0.01)。与活化对照组相比,INI-43低剂量和INI-43高剂量组野生型IL-2启动子报告基因转录活性降低(t=12.69、27.30,均P<0.001);移植物的存活时间延长(Z=-3.71、-3.89,均P<0.001)。与模型对照组相比,INI-43高剂量组T细胞CD25的表达水平下降(t=2.10,P<0.05);INI-43低剂量和INI-43高剂量组CD107a(Z=-3.40、-3.78,均P<0.01)、外周血IL-2(t=5.35、9.07均P<0.01)、IFN-γ(t=6.16、6.81,均P<0.01)的表达水平均下降。结论:KPNB1抑制剂INI-43能够抑制NFAT跨核转运,抑制移植术后小鼠体内T细胞的活化,缓解排斥反应。
Abstract:
Objective: To investigate the role of inhibitor of nuclear import-43 (INI-43) as a karyopherin beta 1 (KPNB1) inhibitor in mouse transplant rejection. Methods: Firstly, in vitro experiments were conducted to divide Jurkat T cells into four groups: blank group, activated control group, INI-43 low-dose group, and INI-43 high-dose group; Chromatin immunoprecipitation technique was used to detect the effect of INI-43 on the binding level of nuclear factor of activated T cells(NFAT) and interleukin-2(IL-2) promoter; Dual luciferase assay was used to detect the effect of INI-43 on the transcriptional activity of IL-2 promoter reporter genes. Subsequently, animal experiments were conducted to divide the mice into five groups: sham surgery group, model control group, cyclosporine A (CsA) group, low-dose INI-43 group, and high-dose INI-43 group. Skin transplantation surgery was performed on the experimental mice, and the survival time of the transplant was recorded; Flow cytometry was used to detect the inhibitory effect of INI-43 on the surface activation molecules CD25 and CD107a of mouse T cells; Enzyme linked immunosorbent assay was used to measure the levels of IL-2 and interferon gamma (IFN-γ) in peripheral blood of mice. Results: Western blotting showed that compared with the activated control group, the levels of NFAT in the nuclear of both low dose and high dose INI-43 groups decreased(Z=-1.96, t=20.88, both P<0.05), and the binding levels of NFAT and IL-2 promoter in the nuclei decreased(t=5.72, 12.51, both P<0.01). Compared with the activated controlgroup, the transcription activity of the wild-type IL-2 promoter reporter gene was reduced in the low-dose and high-dose INI-43 groups (t=12.69, 27.30, both P<0.001). The survival time of the transplant was prolonged(Z=-3.71, -3.89, both P<0.001). Compared with the model control group, the expression level of T cell CD25 decreased in the high-dose INI-43 group(t=2.10, P<0.05). The expression levels of CD107a (Z=-3.40, -3.78, both P<0.01), IL-2 (t=5.35, 9.07, both P<0.01) and IFN-γ (t=6.16, 6.81, both P<0.01) in peripheral blood in the low-dose and high-dose INI-43 groups decreased. Conclusion: KPNB1 inhibitor INI-43 can inhibit NFAT transnuclear transport, suppress T cell activation in transplanted mice, and alleviate rejection reactions.

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备注/Memo

备注/Memo:
基金项目:天津市医学重点学科(专科)建设资助项目(TJYXZDXK-015A)
作者简介:高宇星(2000-),女,硕士在读,研究方向:医学技术;通信作者:穆红,E-mail:tjyzxshen@163.com。
更新日期/Last Update: 2025-02-10