基于 SDF-1 / CXCR4 轴观察济生肾气汤对肝硬化大鼠 BMSCs 归巢的影响
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1.柳州市中医医院(柳州市壮医医院),广西 柳州 545001;2.广西中医药大学,南宁 530200

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R-33

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Effects of Jisheng Shenqi decoction on homing of bone marrow mesenchymal stem cells based on the SDF-1/ CXCR4 axis in rats with liver cirrhosis
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1.Liuzhou Traditional Chinese Medical Hospital, Liuzhou 545001, China. 2. Guangxi University of Chinese Medicine, Nanning 530200

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    摘要:

    目的 探讨济生肾气汤通过基质细胞衍生因子-1( stromal cell derived factor-1,SDF-1) / CXC 族趋化因子受体 4 ( CXC chemokine receptor 4,CXCR4) 轴对骨髓间充质干细胞( bone marrow mesenchymal stem cells, BMSCs)归巢效率的影响,分析其联合 BMSCs 移植治疗肝硬化的机制。 方法 以 40%四氯化碳橄榄油溶液腹腔注 射联合复合因素建立 SD 大鼠肝硬化模型,将 30 只造模成功的大鼠随机分为模型组、BMSCs 移植组(BMSCs 组)、 BMSCs 移植联合济生肾气汤组(联合组),每组 10 只,另以 10 只正常大鼠设为正常组,共 4 组。 BMSCs 组与联合组造模后行尾静脉注射移植荧光标记的 BMSCs,联合组同时予济生肾气汤灌胃,正常组及模型组不予处理。 用药 4 周后,观察各组大鼠肝功能指标及肝组织病理改变,荧光显微镜下观察各组大鼠肝组织内 BMSCs 归巢情况,并且通过 ELISA 法检测各组大鼠血清干细胞因子(stem cell factor,SCF)、肝细胞生长因子( hepatocyte growth factor,HGF)、 粒细胞集落刺激因子(granulocyte colony-stimulating factor,GCSF)及促红细胞生成素(erythropoietin,EPO)水平变化, 免疫组化法检测 SDF-1、CXCR4 蛋白表达情况。 结果 光镜下见模型组大鼠肝纤维化明显,大量炎症细胞浸润,而 BMSCs 组和联合组纤维化程度及炎症活动度均较模型组不同程度改善。与正常组比较,模型组血清谷丙转氨酶、谷草转氨酶、总胆红素、γ-谷氨酰胺转肽酶均明显升高,白蛋白明显降低(P<0. 05),与模型组比较,BMSCs 组与联合组较模型组均有不同程度改善(P<0. 05)。 BMSCs 归巢情况比较,同倍数视野下联合组可见归巢 BMSCs 数量多 于 BMSCs 组(P<0. 05)。 与模型组比较,BMSCs 组、联合组大鼠血清 SCF、HGF、GCSF 及 EPO 表达均不同程度升高, 联合组表达高于 BMSCs 组(P<0. 05)。 免疫组化结果显示,BMSCs 组与联合组大鼠肝组织 SDF-1、CXCR4 蛋白表达较模型组上调,联合组表达水平高于 BMSCs 组(P<0. 05)。 结论 济生肾气汤可激活 SDF-1/ CXCR4 生物轴,上调相关蛋白及其上游调控因子表达,促进 BMSCs 向受损伤肝组织归巢,改善肝硬化大鼠肝功能及肝硬化程度。

    Abstract:

    Objective To explore the effects of Jisheng Shenqi decoction on homing of bone marrow mesenchymal stem cells (BMSCs) based on the SDF-1/ CXCR4 axis and analyze the mechanism of liver cirrhosis treatment with Jisheng Shenqi decoction combined with BMSCs transplantation. Methods A liver cirrhosis model was established by intraperitoneal injection of 40% carbon tetrachloride oil solution and other complex factors in 30 rats that were then randomly divided into the model control group (model group), BMSCs transplantation group (BMSCs group), and BMSCs transplantation combined with Jisheng Shenqi decoction group (combined group). Ten normal rats were used as the normal control group (normal group). The BMSCs and combined groups were injected with fluorescent-labeled BMSCs into the tail vein; the combined group was administered Jisheng Shenqi decoction at the same time; the normal and model groups were not treated. The liver function index and liver pathologic changes were observed at 4 weeks after treatment. The homing of BMSCs in liver tissue in each group was observed under fluorescence microscopy. The serum expressions of stem cell factor, hepatocyte growth factor, granulocyte colony-stimulating factor, and erythropoietin were detected by ELISA. The expressions of SDF-1 and CXCR4 proteins were detected by immunohistochemical staining. Results Under light microscopy, the degree of fibrosis and inflammatory activity was significantly improved in the BMSCs and combined groups compared with the model group. Compared with the normal group, the model group had significantly increased serum concentrations of alanine aminotransferase, aspartate aminotransferase, total bilirubin, and γ-glutamine tanspeptidase and a decreased albumin concentration ( P< 0. 05); these concentrations were also significantly improved in the BMSCs and combined groups compared with the model group (P<0. 05). There were more homing BMSCs observed in the combined group than the BMSCs group (P<0. 05). Compared with the model group, the BMSCs and combined groups had increased expressions of stem cell factor, hepatocyte growth factor, granulocyte colony-stimulating factor, and erythropoietin; furthermore, the expressions of these factors were higher in the combined group than the BMSCs group ( P< 0. 05). Immunohistochemical analyses showed that the expressions of SDF-1 and CXCR4 proteins were upregulated in the BMSCs and combined groups compared with the model group, and were upregulated in the combined group compared with the BMSCs group ( P< 0. 05 ). Conclusions Jisheng Shenqi decoction activates the SDF-1/ CXCR4 biological axis, upregulates the expressions of related proteins and upstream regulatory factors, promotes the homing of BMSCs to the injured liver tissue, and significantly improves the liver function and pathological changes in a rat model of liver cirrhosis.

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周晓玲,王月明,吴 腾,陈 峭,余静芳,李 灿,李泽鹏,陆世银,张 悦,覃凤传,沈新辉.基于 SDF-1 / CXCR4 轴观察济生肾气汤对肝硬化大鼠 BMSCs 归巢的影响[J].中国比较医学杂志,2022,32(8):11~18.

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  • 收稿日期:2021-11-29
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  • 在线发布日期: 2022-12-29
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