BACKGROUND The role of exosomes derived from HepG2.2.15 cells,which express hepatitis B virus(HBV)-related proteins,in triggering the activation of LX2 liver stellate cells and promoting liver fibrosis and cell prolif...BACKGROUND The role of exosomes derived from HepG2.2.15 cells,which express hepatitis B virus(HBV)-related proteins,in triggering the activation of LX2 liver stellate cells and promoting liver fibrosis and cell proliferation remains elusive.The focus was on comprehending the relationship and influence of differentially expressed microRNAs(DE-miRNAs)within these exosomes.AIM To elucidate the effect of exosomes derived from HepG2.2.15 cells on the activation of hepatic stellate cell(HSC)LX2 and the progression of liver fibrosis.METHODS Exosomes from HepG2.2.15 cells,which express HBV-related proteins,were isolated from parental HepG2 and WRL68 cells.Western blotting was used to confirm the presence of the exosomal marker protein CD9.The activation of HSCs was assessed using oil red staining,whereas DiI staining facilitated the observation of exosomal uptake by LX2 cells.Additionally,we evaluated LX2 cell proliferation and fibrosis marker expression using 5-ethynyl-2′-deoxyuracil staining and western blotting,respectively.DE-miRNAs were analyzed using DESeq2.Gene Ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathways were used to annotate the target genes of DE-miRNAs.RESULTS Exosomes from HepG2.2.15 cells were found to induced activation and enhanced proliferation and fibrosis in LX2 cells.A total of 27 miRNAs were differentially expressed in exosomes from HepG2.2.15 cells.GO analysis indicated that these DE-miRNA target genes were associated with cell differentiation,intracellular signal transduction,negative regulation of apoptosis,extracellular exosomes,and RNA binding.KEGG pathway analysis highlighted ubiquitin-mediated proteolysis,the MAPK signaling pathway,viral carcinogenesis,and the toll-like receptor signaling pathway,among others,as enriched in these targets.CONCLUSION These findings suggest that exosomes from HepG2.2.15 cells play a substantial role in the activation,proliferation,and fibrosis of LX2 cells and that DE-miRNAs within these exosomes contribute to the underlying mechanisms.展开更多
目的观察六月青总皂苷(the terpenoids of Liuyueqing,TLYQ)体外抗乙型肝炎病毒(HBV)的作用。方法采用血清药理学方法,在HBV的体外细胞培养系统中(2.2.15细胞)进行TLYQ抗HBV作用观察。结果TLYQ含药血清在HepG2.2.15细胞培养中可有效地...目的观察六月青总皂苷(the terpenoids of Liuyueqing,TLYQ)体外抗乙型肝炎病毒(HBV)的作用。方法采用血清药理学方法,在HBV的体外细胞培养系统中(2.2.15细胞)进行TLYQ抗HBV作用观察。结果TLYQ含药血清在HepG2.2.15细胞培养中可有效地抑制细胞HBV DNA的复制,其作用呈明显的量效和时效反应关系。结论TLYQ在体外能明显抑制HBV,是六月青主要活性成分之一。展开更多
基金Supported by The Spring City Plan:The High-level Talent Promotion and Training Project of Kunming,No.2022SCP002The Research of Key Techniques and Application of Liver-Kidney Organ Transplantation,No.202302AA310018.
文摘BACKGROUND The role of exosomes derived from HepG2.2.15 cells,which express hepatitis B virus(HBV)-related proteins,in triggering the activation of LX2 liver stellate cells and promoting liver fibrosis and cell proliferation remains elusive.The focus was on comprehending the relationship and influence of differentially expressed microRNAs(DE-miRNAs)within these exosomes.AIM To elucidate the effect of exosomes derived from HepG2.2.15 cells on the activation of hepatic stellate cell(HSC)LX2 and the progression of liver fibrosis.METHODS Exosomes from HepG2.2.15 cells,which express HBV-related proteins,were isolated from parental HepG2 and WRL68 cells.Western blotting was used to confirm the presence of the exosomal marker protein CD9.The activation of HSCs was assessed using oil red staining,whereas DiI staining facilitated the observation of exosomal uptake by LX2 cells.Additionally,we evaluated LX2 cell proliferation and fibrosis marker expression using 5-ethynyl-2′-deoxyuracil staining and western blotting,respectively.DE-miRNAs were analyzed using DESeq2.Gene Ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathways were used to annotate the target genes of DE-miRNAs.RESULTS Exosomes from HepG2.2.15 cells were found to induced activation and enhanced proliferation and fibrosis in LX2 cells.A total of 27 miRNAs were differentially expressed in exosomes from HepG2.2.15 cells.GO analysis indicated that these DE-miRNA target genes were associated with cell differentiation,intracellular signal transduction,negative regulation of apoptosis,extracellular exosomes,and RNA binding.KEGG pathway analysis highlighted ubiquitin-mediated proteolysis,the MAPK signaling pathway,viral carcinogenesis,and the toll-like receptor signaling pathway,among others,as enriched in these targets.CONCLUSION These findings suggest that exosomes from HepG2.2.15 cells play a substantial role in the activation,proliferation,and fibrosis of LX2 cells and that DE-miRNAs within these exosomes contribute to the underlying mechanisms.
文摘目的观察六月青总皂苷(the terpenoids of Liuyueqing,TLYQ)体外抗乙型肝炎病毒(HBV)的作用。方法采用血清药理学方法,在HBV的体外细胞培养系统中(2.2.15细胞)进行TLYQ抗HBV作用观察。结果TLYQ含药血清在HepG2.2.15细胞培养中可有效地抑制细胞HBV DNA的复制,其作用呈明显的量效和时效反应关系。结论TLYQ在体外能明显抑制HBV,是六月青主要活性成分之一。
基金Supported by: Science and Technology Foundation Program of Health Bureau of Tianjin, No. 05KYZ24, 2011KY11Basic Key Project of Tianjin Committee of Science and Technology, No. 11JCZDJC27800~~
