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[1]钟彦至,徐振强,左冰峰,等.不同给药途径细菌外膜囊泡对肝细胞癌治疗研究[J].天津医科大学学报,2026,32(04):308-314.[doi:10.20135/j.issn.1006-8147.2026.04.0308]
 ZHONG Yanzhi,XU Zhenqiang,ZUO Bingfeng,et al.Study on the therapeutic effects of bacterial outer membrane vesicles on hepatocellular carcinoma via different administration routes[J].Journal of Tianjin Medical University,2026,32(04):308-314.[doi:10.20135/j.issn.1006-8147.2026.04.0308]
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不同给药途径细菌外膜囊泡对肝细胞癌治疗研究(PDF)

《天津医科大学学报》[ISSN:1006-8147/CN:12-1259/R]

卷:
32卷
期数:
2026年04期
页码:
308-314
栏目:
论著
出版日期:
2026-07-10

文章信息/Info

Title:
Study on the therapeutic effects of bacterial outer membrane vesicles on hepatocellular carcinoma via different administration routes
文章编号:
1006-8147(2026)04-0308-07
作者:
钟彦至徐振强左冰峰尹海芳
(天津医科大学基础医学院细胞生物学系,天津300070)
Author(s):
ZHONG YanzhiXU ZhenqiangZUO BingfengYIN Haifang
(Department of Cell Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China)
关键词:
细菌外膜囊泡给药方式原位肝细胞癌
Keywords:
bacterial outer membrane vesicles administration route orthotopic hepatocellular carcinoma
分类号:
Q291
DOI:
10.20135/j.issn.1006-8147.2026.04.0308
文献标志码:
A
摘要:
目的:比较具有免疫调节功能的外膜囊泡(OMV)在原位肝细胞癌小鼠模型中经皮下注射、静脉注射给药后的抗肿瘤效果。方法:超速离心法收集OMV,采用透射电镜和动态光散射对OMV进行形态和粒径表征。分别通过小鼠皮下注射、静脉注射给予OMV,小鼠分为3组:阴性对照组(NC组)、皮下注射组(S.C.组)、静脉注射组(I.V.组),每组各 3 只。利用流式细胞术检测给药后12 h肿瘤内不同免疫细胞对OMV的摄取效率;在小鼠原位肝细胞癌模型中分别进行皮下和静脉注射OMV治疗,评估不同给药方式对肿瘤生长的影响,并进一步分析肿瘤免疫微环境中免疫细胞组成及活化状态。结果:S.C.组和I.V.组OMV均能被肿瘤内多种免疫细胞摄取,与S.C.组相比,I.V.组OMV在肿瘤内多种免疫细胞中的摄取比例显著升高,包括巨噬细胞(t=4.798,P<0.01)、单核细胞(t=4.079,P<0.05)、树突状细胞(t=3.08,P<0.05)、髓系抑制细胞(t=4.162,P<0.05)以及自然杀伤细胞(t=4.889,P<0.01)。在原位肝细胞癌模型的治疗实验中,与S.C.组相比,I.V.组小鼠肿瘤体积缩小更为显著(t=7.893,P<0.01),肿瘤重量显著降低(t=15.225,P<0.05)。对肿瘤组织的免疫学分析显示,与S.C.组相比,I.V.组肿瘤内巨噬细胞、树突状细胞及B细胞表面共刺激分子CD86的表达水平显著上调(t=3.871、4.137、3.535,均P<0.05),肿瘤内CD4+T细胞、CD8+T细胞及IFN-γ+CD8+T细胞比例显著增加(t=5.268、7.783、3.669,均P<0.05);同时免疫抑制性FoxP3+CD4+Treg细胞比例降低(t=4.98,P<0.05)。结论:在原位肝细胞癌模型中,静脉注射较皮下注射更有效抑瘤及激活免疫微环境中不同类型免疫细胞。
Abstract:
Objective: To compare the antitumor effects of immunomodulatory outer membrane vesicles (OMVs) administered via subcutaneous and intravenous routes in an orthotopic hepatocellular carcinoma mouse model. Methods:The OMVs were isolated by ultracentrifugation and characterized by transmission electron microscopy and dynamic light scattering. The mice were administered OMVs via subcutaneous or intravenous injection. The mice were divided into three groups as follows: negative control group(NC group), subcutaneous injection experimental group (S.C. group) and intravenous injection experimental group (I.V. group),with 3 animals in each group.Flow cytometry was used to detect the uptake efficiency of OMVs by different immune cells in the tumor at 12 hours after administration; in the orthotopic mouse model of hepatocellular carcinoma, OMV treatment was performed by subcutaneous and intravenous injection respectively to evaluate the effects of different administration routes on tumor growth and further analyze the composition and activation status of immune cells in the tumor immune microenvironment. Results:OMVs in both the S.C. group and the I.V. group could be taken up by various immune cells in the tumor; compared with the S.C. group, the uptake proportion of OMVs in various intratumoral immune cells was significantly higher than that in I.V. group, including macrophages(t=4.798,P<0.01), monocytes(t=4.079,P<0.05), dendritic cells(t=3.08,P<0.05), MDSC(t=4.162,P<0.05), and NK cells(t=4.889,P<0.01). In the treatment experiment of the orthotopic hepatocellular carcinoma model, compared with subcutaneous injection, the tumor volume of mice in the intravenous administration group was significantly reduced(t=7.893,P<0.01),and the tumor weight was significantly decreased(t=15.225,P<0.05). Immunological analysis revealed that I.V. group more effectively upregulated CD86 expression on tumor-infiltrating macrophages, dendritic cells, and B cells (t=3.871, 4.137, 3.535, all P<0.05), increased the proportions of intratumoral CD4+ T cells, CD8+ T cells, and IFN-γ+ CD8+ T cells (t=5.268, 7.783, 3.669, all P<0.05), and reduced the proportion of immunosuppressive FoxP3+CD4+ regulatory T cells (t= 4.98, P<0.05) than those in S.C. group. Conclusion: In the orthotopic hepatocellular carcinoma model, intravenous administration is more effective than subcutaneous injection in delivering OMVs into the tumor immune microenvironment and exerting antitumor and immunomodulatory effects.

参考文献/References:

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备注/Memo

备注/Memo:
(2026-01-27收稿)
基金项目 天津市科技计划项目(24PTLYHZ00330)
作者简介 钟彦至(1999-),女,硕士在读,研究方向:药物治疗与靶向递送;通信作者:尹海芳,E-mail:haifangyin@tmu.edu.cn;左冰峰,E-mail:zuobingfeng@tmu.edu.cn。
更新日期/Last Update: 2026-07-15