间充质干细胞联合免疫抑制剂对肝移植大鼠模型免疫排斥的影响

李海涛; 俞赛花; 陈丽红; 赖子森; 刘海岩; 刘红枝; 沈聪龙

doi:10.12449/JCH240622

间充质干细胞联合免疫抑制剂对肝移植大鼠模型免疫排斥的影响

DOI: 10.12449/JCH240622

李海涛^1a, , ,,
俞赛花²,
陈丽红^1b,
赖子森^1a,
刘海岩²,
刘红枝^1a,
沈聪龙^1a

1a.
福建医科大学孟超肝胆医院肝胆胰脾微创外科，福州 350011
1b.
福建医科大学孟超肝胆医院病理科，福州 350011
2.
福州大学生物科学与工程学院，福州 350116

基金项目:

福建省自然科学基金 (2020J011163);

福建省卫生健康委医学创新项目 (2020CXA054);

福州市临床重点专科建设项目 (20230101)

伦理学声明： 本研究方案于2023年5月25日经由福建医科大学孟超肝胆医院实验动物伦理委员会审批，批号：MCHH-AEC-2023-04，符合实验室动物管理与使用准则。

利益冲突声明：本文不存在任何利益冲突。

作者贡献声明：李海涛负责设计论文框架，起草论文；俞赛花、刘海岩负责实验操作，研究过程的实施；陈丽红、赖子森、刘红枝、沈聪龙负责数据收集，统计学分析。

详细信息

通信作者:
李海涛， lht45182@163.com （ORCID： 0000-0003-4680-4752）

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出版历程
- 收稿日期: 2023-10-10
- 录用日期: 2023-11-08
- 出版日期: 2024-06-25

Effect of mesenchymal stem cells combined with immunosuppressants on immune rejection in a rat model of liver transplantation

1a.
Department of Minimally Invasive Hepatopancreatobiliary Surgery,Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350011, China
1b.
Department of Pathology，Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350011, China
2.
College of Biological Science and Engineering, Fuzhou University，Fuzhou 350016，China

Research funding:

The Natural Science Foundation of Fujian Province (2020J011163);

The Medical Innovation Project of Fujian Province (2020CXA054);

Key Clinical Specialty Discipline Construction Program of Fuzhou (20230101)

More Information

Corresponding author: LI Haitao， lht45182@163.com （ORCID： 0000-0003-4680-4752）

摘要

摘要: 目的探讨间充质干细胞（MSC）联合免疫抑制剂（IS）对肝移植大鼠模型免疫排斥反应的影响。方法将F344大鼠分成5组：Normal组（不进行任何干预）、PS组（注射等量生理盐水）、MSC组（注射MSC）、IS组（注射IS）、MSC+IS组（注射MSC和IS），每组8只。除Normal组以外，各组均采用Kamada双袖套法不重建肝动脉建立原位肝移植模型。大鼠肝组织进行HE染色、Masson染色并进行纤维化程度统计，免疫组化实验检测T淋巴细胞和NK细胞浸润情况，免疫荧光实验分析巨噬细胞M2极化情况。计量资料多组间比较采用单因素方差分析，进一步两两比较采用LSD-t检验。Kaplan-Meier法绘制生存曲线，生存分析采用Log-rank检验。结果与PS组相比，MSC+IS组生存期显著延长（P<0.01），MSC组、IS组和MSC+IS组的肝组织结构明显改善，纤维化程度显著降低（P值均<0.000 1），NK细胞和T淋巴细胞浸润数量显著减少（P值均<0.000 1），巨噬细胞M2极化程度显著增加（P值均<0.000 1），提示MSC+IS组的疗效显著优于MSC组和IS组。结论 MSC联合IS可以改善大鼠肝移植术后肝组织病理，降低炎性细胞浸润，促进巨噬细胞M2极化，起免疫抑制作用。
- 肝移植 /
- 间质干细胞 /
- 移植物排斥
Abstract: Objective To investigate the effect of mesenchymal stem cells （MSCs） combined with immunosuppressants （IS） on immune rejection in a rat model of liver transplantation. Methods F344 rats were divided into Normal group （without any intervention）， PS group （injected with an equal volume of normal saline）， MSC group （injected with MSC）， IS group （injected with IS）， and MSC+IS group （injected with MSC and IS）， with 8 rats in each group. For all rats except those in the Normal group， the Kamada’s double-cuff method was used to establish a model of orthotopic liver transplantation， without reconstruction of the hepatic artery. HE staining and Masson staining were performed for rat liver tissue， and the degree of liver fibrosis was analyzed； immunohistochemical experiments were used to measure the infiltration of T cells and NK cells， and immunofluorescence assay was used to analyze macrophage M2 polarization. A one-way analysis of variance was used for comparison of continuous data between multiple groups， and the least significant difference t-test was used for further comparison between two groups. The Kaplan-Meier method was used to plot survival curves， and the log-rank test was used for survival analysis. Results Compared with the PS group， the MSC+IS group had a significantly prolonged survival time （P<0.01）， and the MSC group， the IS group， and the MSC+IS group had a significant improvement in the histological structure of the liver and a significant reduction in the degree of liver fibrosis （all P<0.000 1）， as well as a significant reduction in the infiltration of NK and T cells （all P<0.000 1） and a significant increase in the degree of macrophage M2 polarization （all P<0.000 1）. The MSC+IS group had a significantly better effect than the MSC group and the IS group. Conclusion MSCs combined with IS can improve liver histopathology， reduce inflammatory cell infiltration， promote macrophage M2 polarization， and exert an immunosuppressive effect in rats after liver transplantation.
- Liver Transplantation /
- Mesenchymal Stem Cells /
- Graft Rejection

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图 1 MSC的外形鉴定（×20）

Figure 1. Shape identification of MSC（×20）

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图 2 MSC的表型鉴定

Figure 2. Phenotypic identification of MSC

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图 3 大鼠肝移植后Kaplan-Meier生存曲线

Figure 3. Kaplan-Meier survival curve after liver transplantation in rats

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图 4 各组大鼠肝组织病理切片

Figure 4. Histopathological sections of rat liver in various groups

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图 5 大鼠肝移植术后肝组织纤维化程度统计图

Figure 5. Statistical graph of the degree of fibrosis in liver tissue after liver transplantation in rats

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图 6 各组大鼠肝组织CD56、CD3指标免疫组化染色

注： a，免疫组化染色（×40）；b、c，CD56、CD3阳性细胞占比统计结果。

Figure 6. Immunohistochemical staining of rat liver tissue for CD56 and CD3 indicators in each group

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图 7 各组大鼠肝组织免疫荧光染色

注： DAPI、CD68、CD163与Merge放大倍数为20，Enlarge放大倍数为63。

Figure 7. Immunofluorescence staining of rat liver tissue in each group

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图 8 各组大鼠肝组织巨噬细胞M2型极化占比统计图

Figure 8. Statistics of the percentage of macrophage M2 type polarisation in liver tissue of rats in each group

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