目的研究葛根汤颗粒对甲型流感病毒(influenza A virus,IAV)致小鼠病毒性肺炎模型的药效评价及免疫调节作用。方法ICR小鼠,13~15 g,分为正常对照组、模型对照组,磷酸奥司他韦阳性药对照组及葛根汤颗粒高、中、低剂量组(6.6、3.3、1.7 g-...目的研究葛根汤颗粒对甲型流感病毒(influenza A virus,IAV)致小鼠病毒性肺炎模型的药效评价及免疫调节作用。方法ICR小鼠,13~15 g,分为正常对照组、模型对照组,磷酸奥司他韦阳性药对照组及葛根汤颗粒高、中、低剂量组(6.6、3.3、1.7 g-1·kg^(-1)·d^(-1)),每组10只,采用IAV(FM1株)病毒液感染建立小鼠病毒性肺炎模型,同时给予相关药物治疗。观察各组小鼠肺指数及肺指数抑制率,RT-PCR法检测肺组织核酸,ELISA法检测小鼠肺组织因子白介素-6(IL-6)、白介素-10(IL-10)、肿瘤坏死因子TNF-α;同时采用IAV(FM1株)病毒液滴鼻感染小鼠,造成死亡保护模型,观察小鼠感染后2周内的死亡情况,计算小鼠的死亡率、死亡保护率、平均存活天数和生命延长率。结果葛根汤颗粒中剂量组肺指数及肺组织病毒载量显著降低(P<0.01),肺指数抑制率为50.73%;葛根汤颗粒高、中剂量组肺组织炎性因子IL-10含量显著降低(P<0.01)、葛根汤颗粒中、低剂量组肺组织炎性因子TNF-α含量显著降低(P<0.01);葛根汤颗粒3个剂量组肺组织炎性因子IL-6含量显著降低(P<0.01);模型组小鼠死亡率90%,平均存活天数9.45 d,葛根汤颗粒3个剂量组小鼠死亡率显著降低、平均存活天数显著延长,生命延长率显著提高(P<0.01)。结论葛根汤颗粒可通过调节模型小鼠免疫炎性因子水平达到改善病毒性肺炎小鼠免疫功能的作用,同时可显著降低模型小鼠肺指数和肺组织病毒载量,从而减轻模型小鼠的肺部炎性损伤;对模型小鼠有死亡保护作用。展开更多
Traditional tumor models do not tend to accurately simulate tumor growth in vitro or enable personalized treatment and are particularly unable to discover more beneficial targeted drugs.To address this,this study desc...Traditional tumor models do not tend to accurately simulate tumor growth in vitro or enable personalized treatment and are particularly unable to discover more beneficial targeted drugs.To address this,this study describes the use of threedimensional(3D)bioprinting technology to construct a 3D model with human hepatocarcinoma SMMC-7721 cells(3DP-7721)by combining gelatin methacrylate(GelMA)and poly(ethylene oxide)(PEO)as two immiscible aqueous phases to form a bioink and innovatively applying fluorescent carbon quantum dots for long-term tracking of cells.The GelMA(10%,mass fraction)and PEO(1.6%,mass fraction)hydrogel with 3:1 volume ratio offered distinct pore-forming characteristics,satisfactorymechanical properties,and biocompatibility for the creation of the 3DP-7721 model.Immunofluorescence analysis and quantitative real-time fluorescence polymerase chain reaction(PCR)were used to evaluate the biological properties of the model.Compared with the two-dimensional culture cell model(2D-7721)and the 3D mixed culture cell model(3DM-7721),3DP-7721 significantly improved the proliferation of cells and expression of tumor-related proteins and genes.Moreover,we evaluated the differences between the three culture models and the effectiveness of antitumor drugs in the three models and discovered that the efficacy of antitumor drugs varied because of significant differences in resistance proteins and genes between the three models.In addition,the comparison of tumor formation in the three models found that the cells cultured by the 3DP-7721 model had strong tumorigenicity in nude mice.Immunohistochemical evaluation of the levels of biochemical indicators related to the formation of solid tumors showed that the 3DP-7721 model group exhibited pathological characteristics of malignant tumors,the generated solid tumors were similar to actual tumors,and the deterioration was higher.This research therefore acts as a foundation for the application of 3DP-7721 models in drug development research.展开更多
缺氧诱导因子(hypoxia-inducible factor, HIF)与肝细胞癌的发生发展相关。HIF-1α在包括肝细胞癌在内的多种癌症类型的发生发展中发挥着重要作用,但其在肝细胞癌中的靶基因尚未完全确定。为找到HIF-1α在肝癌中新的致癌靶点,通过整合HI...缺氧诱导因子(hypoxia-inducible factor, HIF)与肝细胞癌的发生发展相关。HIF-1α在包括肝细胞癌在内的多种癌症类型的发生发展中发挥着重要作用,但其在肝细胞癌中的靶基因尚未完全确定。为找到HIF-1α在肝癌中新的致癌靶点,通过整合HIF-1α敲除的RNA-seq数据,HIF-1α的ChIP-Seq数据,HIF-1α在肝癌中的共表达基因,以及肝癌相关的GEO(Gene Expression Omnibus)数据集,寻找HIF-1α的潜在靶基因。通过分析TCGA(The Cancer Genome Atlas)肝癌数据库、GEO和HPA(Human Protein Atlas)数据集,研究HIF-1α与ATP2C1的相关性,ATP2C1在肝癌中的表达及预后。通过建立物理和化学(氯化钴)缺氧模型验证ATP2C1与低氧及HIF-1α的关系。通过GO(Gene Ontology),KEGG(Kyoto Encyclopedia of Genes and Genomes)和GSEA(Gene Set Enrichment Analysis)分析探索ATP2C1的生物学功能。通过设计体外实验证实ATP2C1对HCC的作用。利用STRING和BioGRID两个蛋白互作在线数据库获得ATP2C1的互作蛋白,并研究其在肝癌中的表达及相关性。通过整合及筛选数据,ATP2C1被鉴定为一个HIF-1α的潜在靶基因。ATP2C1与HIF-1α高度相关,在肝细胞癌中高表达,且伴随有不良预后。富集分析与体外实验的结果表明ATP2C1参与调控HCC细胞的增殖迁移。蛋白互作数据表明ATP2C1与TMEM165存在互作关系,生存分析表明TMEM1651高表达的肝癌患者预后较差。相关性分析的结果显示ATP2C1与肝癌中TMEM165和MMP2的表达高度相关,表明ATP2C1可能与TMEM165和MMP2存在互作关系,并参与了肝癌的进展过程。结果表明,ATP2C1是HIF-1α的靶基因和肝细胞癌的生物标志物,其敲低抑制了HCC的增殖和迁移。展开更多
基金supported by the National Natural Science Foundation of China(Nos.51975400 and 62031022)Shanxi Provincial Key Medical Scientific Research Project(Nos.2020XM06 and 2021XM12)+3 种基金Fundamental Research Program of Shanxi Province(No.202103021224081)Shanxi Provincial Basic Research Project(Nos.202103021221006 and 202103021223040)Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi(No.2021L044)Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering(No.2022SX-TD026).
文摘Traditional tumor models do not tend to accurately simulate tumor growth in vitro or enable personalized treatment and are particularly unable to discover more beneficial targeted drugs.To address this,this study describes the use of threedimensional(3D)bioprinting technology to construct a 3D model with human hepatocarcinoma SMMC-7721 cells(3DP-7721)by combining gelatin methacrylate(GelMA)and poly(ethylene oxide)(PEO)as two immiscible aqueous phases to form a bioink and innovatively applying fluorescent carbon quantum dots for long-term tracking of cells.The GelMA(10%,mass fraction)and PEO(1.6%,mass fraction)hydrogel with 3:1 volume ratio offered distinct pore-forming characteristics,satisfactorymechanical properties,and biocompatibility for the creation of the 3DP-7721 model.Immunofluorescence analysis and quantitative real-time fluorescence polymerase chain reaction(PCR)were used to evaluate the biological properties of the model.Compared with the two-dimensional culture cell model(2D-7721)and the 3D mixed culture cell model(3DM-7721),3DP-7721 significantly improved the proliferation of cells and expression of tumor-related proteins and genes.Moreover,we evaluated the differences between the three culture models and the effectiveness of antitumor drugs in the three models and discovered that the efficacy of antitumor drugs varied because of significant differences in resistance proteins and genes between the three models.In addition,the comparison of tumor formation in the three models found that the cells cultured by the 3DP-7721 model had strong tumorigenicity in nude mice.Immunohistochemical evaluation of the levels of biochemical indicators related to the formation of solid tumors showed that the 3DP-7721 model group exhibited pathological characteristics of malignant tumors,the generated solid tumors were similar to actual tumors,and the deterioration was higher.This research therefore acts as a foundation for the application of 3DP-7721 models in drug development research.
文摘缺氧诱导因子(hypoxia-inducible factor, HIF)与肝细胞癌的发生发展相关。HIF-1α在包括肝细胞癌在内的多种癌症类型的发生发展中发挥着重要作用,但其在肝细胞癌中的靶基因尚未完全确定。为找到HIF-1α在肝癌中新的致癌靶点,通过整合HIF-1α敲除的RNA-seq数据,HIF-1α的ChIP-Seq数据,HIF-1α在肝癌中的共表达基因,以及肝癌相关的GEO(Gene Expression Omnibus)数据集,寻找HIF-1α的潜在靶基因。通过分析TCGA(The Cancer Genome Atlas)肝癌数据库、GEO和HPA(Human Protein Atlas)数据集,研究HIF-1α与ATP2C1的相关性,ATP2C1在肝癌中的表达及预后。通过建立物理和化学(氯化钴)缺氧模型验证ATP2C1与低氧及HIF-1α的关系。通过GO(Gene Ontology),KEGG(Kyoto Encyclopedia of Genes and Genomes)和GSEA(Gene Set Enrichment Analysis)分析探索ATP2C1的生物学功能。通过设计体外实验证实ATP2C1对HCC的作用。利用STRING和BioGRID两个蛋白互作在线数据库获得ATP2C1的互作蛋白,并研究其在肝癌中的表达及相关性。通过整合及筛选数据,ATP2C1被鉴定为一个HIF-1α的潜在靶基因。ATP2C1与HIF-1α高度相关,在肝细胞癌中高表达,且伴随有不良预后。富集分析与体外实验的结果表明ATP2C1参与调控HCC细胞的增殖迁移。蛋白互作数据表明ATP2C1与TMEM165存在互作关系,生存分析表明TMEM1651高表达的肝癌患者预后较差。相关性分析的结果显示ATP2C1与肝癌中TMEM165和MMP2的表达高度相关,表明ATP2C1可能与TMEM165和MMP2存在互作关系,并参与了肝癌的进展过程。结果表明,ATP2C1是HIF-1α的靶基因和肝细胞癌的生物标志物,其敲低抑制了HCC的增殖和迁移。
