BACKGROUND N6-methyladenosine(m6A)methylation modification exists in Epstein-Barr virus(EBV)primary infection,latency,and lytic reactivation.It also modifies EBV latent genes and lytic genes.EBV-associated gastric can...BACKGROUND N6-methyladenosine(m6A)methylation modification exists in Epstein-Barr virus(EBV)primary infection,latency,and lytic reactivation.It also modifies EBV latent genes and lytic genes.EBV-associated gastric cancer(EBVaGC)is a distinctive molecular subtype of GC.We hypothesized EBV and m6A methylation regulators interact with each other in EBVaGC to differentiate it from other types of GC.AIM To investigate the mechanisms of m6A methylation regulators in EBVaGC to determine the differentiating factors from other types of GC.METHODS First,The Cancer Gene Atlas and Gene Expression Omnibus databases were used to analyze the expression pattern of m6A methylation regulators between EBVaGC and EBV-negative GC(EBVnGC).Second,we identified Gene Ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)functional enrichment of m6A-related differentially expressed genes.We quantified the relative abundance of immune cells and inflammatory factors in the tumor microenvironment(TME).Finally,cell counting kit-8 cell proliferation test,transwell test,and flow cytometry were used to verify the effect of insulin-like growth factor binding protein 1(IGFBP1)in EBVaGC cell lines.RESULTS m6A methylation regulators were involved in the occurrence and development of EBVaGC.Compared with EBVnGC,the expression levels of m6A methylation regulators Wilms tumor 1-associated protein,RNA binding motif protein 15B,CBL proto-oncogene like 1,leucine rich pentatricopeptide repeat containing,heterogeneous nuclear ribonucleoprotein A2B1,IGFBP1,and insulin-like growth factor 2 binding protein 1 were significantly downregulated in EBVaGC(P<0.05).The overall survival rate of EBVaGC patients with a lower expression level of IGFBP1 was significantly higher(P=0.046).GO and KEGG functional enrichment analyses showed that the immunity pathways were significantly activated and rich in immune cell infiltration in EBVaGC.Compared with EBVnGC,the infiltration of activated CD4+T cells,activated CD8+T cells,monocytes,activated dendritic cells,and plasmacytoid dendritic cells were significantly upregulated in EBVaGC(P<0.001).In EBVaGC,the expression level of proinflammatory factors interleukin(IL)-17,IL-21,and interferon-γ and immunosuppressive factor IL-10 were significantly increased(P<0.05).In vitro experiments demonstrated that the expression level of IGFBP1 was significantly lower in an EBVaGC cell line(SNU719)than in an EBVnGC cell line(AGS)(P<0.05).IGFBP1 overexpression significantly attenuated proliferation and migration and promoted the apoptosis levels in SNU719.Interfering IGFBP1 significantly promoted proliferation and migration and attenuated the apoptosis levels in AGS.CONCLUSION m6A regulators could remodel the TME of EBVaGC,which is classified as an immune-inflamed phenotype and referred to as a“hot”tumor.Among these regulators,we demonstrated that IGFBP1 affected proliferation,migration,and apoptosis.展开更多
The current study was to determine the serum/plasmalevels of VEGF, IL-6, malondialdehyde (MDA), nitric oxide(NO), PCT and CRP in gastric carcinoma and correlation withthe stages of the disease and accompanying infection.
目的探讨微小RNA-370-3p(miR-370-3p)和低密度脂蛋白受体相关蛋白6(LRP6)对胎儿生长受限(FGR)孕妇的临床诊断价值。方法选取2020年6月—2022年6月期间产检并确诊为FGR的孕妇96例为观察组,另选取同期产检的健康孕妇96例作为对照组,记录...目的探讨微小RNA-370-3p(miR-370-3p)和低密度脂蛋白受体相关蛋白6(LRP6)对胎儿生长受限(FGR)孕妇的临床诊断价值。方法选取2020年6月—2022年6月期间产检并确诊为FGR的孕妇96例为观察组,另选取同期产检的健康孕妇96例作为对照组,记录两组分娩孕周、1 min Apgar评分、5 min Apgar评分、新生儿体重、胎盘质量,依据美国妇产科学院(ACOG)标准将观察组划分为FGR组、严重FGR组。qRT-PCR法检测血清miR-370-3p和LRP6 mRNA表达水平;血清miR-370-3p和LRP6 mRNA水平与分娩孕周、1 min Apgar评分、5 min Apgar评分、新生儿体重、胎盘质量的相关性采用Pearson法分析;miR-370-3p和LRP6 mRNA对FGR的诊断价值采用ROC曲线评估。结果两组孕妇年龄、分娩孕周、是否初产的比例差异有统计学意义(P<0.05);观察组miR-370-3p显著高于对照组,LRP6显著低于对照组(P<0.05);严重FGR组miR-370-3p显著高于FGR组,LRP6显著低于FGR组(P<0.05);对照组与观察组新生儿体重、1 min Apgar评分、5 min Apgar评分及胎盘质量之间差异有统计学意义(P<0.05);miR-370-3p与LRP6之间呈负相关(r=-0.692,P<0.05),miR-370-3p与分娩孕周、新生儿体重、1 min Apgar评分、5 min Apgar评分、胎盘质量均呈负相关(r=-0.401、-0.382、-0.425、-0.484、-0.504,均P<0.05),LRP6与分娩孕周、新生儿体重、1 min Apgar评分、5 min Apgar评分、胎盘质量均呈正相关(r=0.306、0.412、0.512、0.612、0.419,均P<0.05);ROC曲线显示,miR-370-3p对FGR诊断的AUC为0.877(95%CI:0.821~0.919),截断值为1.40,其敏感度、特异性分别为67.71%、93.75%;LRP6对FGR诊断的AUC为0.838(95%CI:0.778~0.887),截断值为0.83,其敏感度、特异性分别为84.37%、71.87%;二者联合对FGR诊断的AUC为0.923(95%CI:0.875~0.956),明显高于二者单独诊断(Z联合vs miR-370-3P=2.811、P=0.005;Z联合vs LRP6=3.372、P=0.001),其敏感度、特异性分别为85.42%、87.50%。结论FGR患者血清miR-370-3p高表达、LRP6低表达,二者联合对FGR具有一定诊断价值。展开更多
The periodontal ligament-derived mesenchymal stem cell is regarded as a source of adult stem cells due to its multipotency.However, the proof of chondrogenic potential of the cells is scarce.Therefore,we investigated ...The periodontal ligament-derived mesenchymal stem cell is regarded as a source of adult stem cells due to its multipotency.However, the proof of chondrogenic potential of the cells is scarce.Therefore,we investigated the chondrogenic differentiation capacity of periodontal ligament derived mesenchymal stem cells induced by transforming growth factor(TGF)-p3 and bone morphogenetic protein(BMP)-6.After isolation of periodontal ligament stem cells(PDLSCs) from human periodontal ligament,the cells were cultured in Dulbecco’s modified Eagle’s medium(DMEM) with 20%fetal bovine serum(FBS).A mechanical force initiated chondrogenic differentiation of the cells.For chondrogenic differentiation,10μg·LTGF-β3 or 100μg·LBMP-6 and the combination treating group for synergistic effect of the growth factors.We analyzed the PDLSCs by fluorescence-activated cell sorting and chondrogenesis were evaluated by glycosaminoglycans assay,histology,immunohistochemistry and genetic analysis.PDLSCs showed mesenchymal stem cell properties proved by FACS analysis.Glycosaminoglycans contents were increased 217%by TGF-β3 and 220%by BMP-6. The synergetic effect of TGF-β3 and BMP-6 were shown up to 281%compared to control.The combination treatment increased Sox9, aggrecan and collagen II expression compared with not only controls,but also TGF-P3 or BMP-6 single treatment dramatically.The histological analysis also indicated the chondrogenic differentiation of PDLSCs in our conditions.The results of the present study demonstrate the potential of the dental stem cell as a valuable cell source for chondrogenesis,which may be applicable for regeneration of cartilage and bone fracture in the field of cell therapy.展开更多
The Tyro3, Axl and Mer (TAM) receptor tyrosine kinases are activated by endogenous ligands, protein S1 (PROS1) and growth arrest-specific gene 6 (Gas6), and those have important effects on cell biology. These receptor...The Tyro3, Axl and Mer (TAM) receptor tyrosine kinases are activated by endogenous ligands, protein S1 (PROS1) and growth arrest-specific gene 6 (Gas6), and those have important effects on cell biology. These receptors (Rs) can be shad from the cell membrane and their soluble(s) forms can be found in plasma. We investigated the fluctuation and interactive role of sTAMRs and its ligands in patients with hepatocellular carcinoma (HCC), hepatitis groups, and healthy normal adult controls (NC). The measurement cases were 45 patients with HCC group (stage 1 in 4, stage 2 in 8, stage 3 in 16, and stage 4 in 17), 4 patients with fulminant hepatitis (FH), 14 patients with acute hepatitis (AH), 10 patients with chronic hepatitis (CH), 16 patients with liver cirrhosis (LC), and 20 NCs matched by age. Plasma levels of three sTAMRs and their ligands were measured by ELISA. In comparison with NCs, Gas6, des-γ-carboxy Gas6, and sTAMRs levels were significantly higher in HCC patients, but free PROS1 levels were significantly lower. The sTyro3 and sAxl levels peaked HCC stages 2 and 3 respectively, and gradually decreased afterwards while maintaining high levels. sMer levels increased with the progression of HCC. Gas6 and des-γ-carboxy Gas6 levels gradually increased, and PROS1 levels decreased with the progression of HCC. Gas6 levels were positively correlated with sAxl levels, whereas sMer levels were negatively correlated with free PROS1 levels. sTAMRs and Gas6 levels increased in parallel to the progression of HCC fibrosis. Through the progression of HCC, Axl played the major role in TAMRs activation. However, sTYro3 continued increasing rapidly from the early stage, and that of Mer increased throughout the progression. Roles of Axl may be changed in Mer, because des-γ-carboxy Gas6 levels increasing with Gas6 in the advanced stage of HCC cannot send a signal to Axl.展开更多
基金Supported by the Sub-Project of the National Key Research and Development Program,No.2021YFC2600263.
文摘BACKGROUND N6-methyladenosine(m6A)methylation modification exists in Epstein-Barr virus(EBV)primary infection,latency,and lytic reactivation.It also modifies EBV latent genes and lytic genes.EBV-associated gastric cancer(EBVaGC)is a distinctive molecular subtype of GC.We hypothesized EBV and m6A methylation regulators interact with each other in EBVaGC to differentiate it from other types of GC.AIM To investigate the mechanisms of m6A methylation regulators in EBVaGC to determine the differentiating factors from other types of GC.METHODS First,The Cancer Gene Atlas and Gene Expression Omnibus databases were used to analyze the expression pattern of m6A methylation regulators between EBVaGC and EBV-negative GC(EBVnGC).Second,we identified Gene Ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)functional enrichment of m6A-related differentially expressed genes.We quantified the relative abundance of immune cells and inflammatory factors in the tumor microenvironment(TME).Finally,cell counting kit-8 cell proliferation test,transwell test,and flow cytometry were used to verify the effect of insulin-like growth factor binding protein 1(IGFBP1)in EBVaGC cell lines.RESULTS m6A methylation regulators were involved in the occurrence and development of EBVaGC.Compared with EBVnGC,the expression levels of m6A methylation regulators Wilms tumor 1-associated protein,RNA binding motif protein 15B,CBL proto-oncogene like 1,leucine rich pentatricopeptide repeat containing,heterogeneous nuclear ribonucleoprotein A2B1,IGFBP1,and insulin-like growth factor 2 binding protein 1 were significantly downregulated in EBVaGC(P<0.05).The overall survival rate of EBVaGC patients with a lower expression level of IGFBP1 was significantly higher(P=0.046).GO and KEGG functional enrichment analyses showed that the immunity pathways were significantly activated and rich in immune cell infiltration in EBVaGC.Compared with EBVnGC,the infiltration of activated CD4+T cells,activated CD8+T cells,monocytes,activated dendritic cells,and plasmacytoid dendritic cells were significantly upregulated in EBVaGC(P<0.001).In EBVaGC,the expression level of proinflammatory factors interleukin(IL)-17,IL-21,and interferon-γ and immunosuppressive factor IL-10 were significantly increased(P<0.05).In vitro experiments demonstrated that the expression level of IGFBP1 was significantly lower in an EBVaGC cell line(SNU719)than in an EBVnGC cell line(AGS)(P<0.05).IGFBP1 overexpression significantly attenuated proliferation and migration and promoted the apoptosis levels in SNU719.Interfering IGFBP1 significantly promoted proliferation and migration and attenuated the apoptosis levels in AGS.CONCLUSION m6A regulators could remodel the TME of EBVaGC,which is classified as an immune-inflamed phenotype and referred to as a“hot”tumor.Among these regulators,we demonstrated that IGFBP1 affected proliferation,migration,and apoptosis.
文摘The current study was to determine the serum/plasmalevels of VEGF, IL-6, malondialdehyde (MDA), nitric oxide(NO), PCT and CRP in gastric carcinoma and correlation withthe stages of the disease and accompanying infection.
文摘目的探讨微小RNA-370-3p(miR-370-3p)和低密度脂蛋白受体相关蛋白6(LRP6)对胎儿生长受限(FGR)孕妇的临床诊断价值。方法选取2020年6月—2022年6月期间产检并确诊为FGR的孕妇96例为观察组,另选取同期产检的健康孕妇96例作为对照组,记录两组分娩孕周、1 min Apgar评分、5 min Apgar评分、新生儿体重、胎盘质量,依据美国妇产科学院(ACOG)标准将观察组划分为FGR组、严重FGR组。qRT-PCR法检测血清miR-370-3p和LRP6 mRNA表达水平;血清miR-370-3p和LRP6 mRNA水平与分娩孕周、1 min Apgar评分、5 min Apgar评分、新生儿体重、胎盘质量的相关性采用Pearson法分析;miR-370-3p和LRP6 mRNA对FGR的诊断价值采用ROC曲线评估。结果两组孕妇年龄、分娩孕周、是否初产的比例差异有统计学意义(P<0.05);观察组miR-370-3p显著高于对照组,LRP6显著低于对照组(P<0.05);严重FGR组miR-370-3p显著高于FGR组,LRP6显著低于FGR组(P<0.05);对照组与观察组新生儿体重、1 min Apgar评分、5 min Apgar评分及胎盘质量之间差异有统计学意义(P<0.05);miR-370-3p与LRP6之间呈负相关(r=-0.692,P<0.05),miR-370-3p与分娩孕周、新生儿体重、1 min Apgar评分、5 min Apgar评分、胎盘质量均呈负相关(r=-0.401、-0.382、-0.425、-0.484、-0.504,均P<0.05),LRP6与分娩孕周、新生儿体重、1 min Apgar评分、5 min Apgar评分、胎盘质量均呈正相关(r=0.306、0.412、0.512、0.612、0.419,均P<0.05);ROC曲线显示,miR-370-3p对FGR诊断的AUC为0.877(95%CI:0.821~0.919),截断值为1.40,其敏感度、特异性分别为67.71%、93.75%;LRP6对FGR诊断的AUC为0.838(95%CI:0.778~0.887),截断值为0.83,其敏感度、特异性分别为84.37%、71.87%;二者联合对FGR诊断的AUC为0.923(95%CI:0.875~0.956),明显高于二者单独诊断(Z联合vs miR-370-3P=2.811、P=0.005;Z联合vs LRP6=3.372、P=0.001),其敏感度、特异性分别为85.42%、87.50%。结论FGR患者血清miR-370-3p高表达、LRP6低表达,二者联合对FGR具有一定诊断价值。
基金supported by the Bio & Medical Technology Development Program of the National Research Foundation(NRF) funded by the Korean government(MEST)(No.860-20110087)
文摘The periodontal ligament-derived mesenchymal stem cell is regarded as a source of adult stem cells due to its multipotency.However, the proof of chondrogenic potential of the cells is scarce.Therefore,we investigated the chondrogenic differentiation capacity of periodontal ligament derived mesenchymal stem cells induced by transforming growth factor(TGF)-p3 and bone morphogenetic protein(BMP)-6.After isolation of periodontal ligament stem cells(PDLSCs) from human periodontal ligament,the cells were cultured in Dulbecco’s modified Eagle’s medium(DMEM) with 20%fetal bovine serum(FBS).A mechanical force initiated chondrogenic differentiation of the cells.For chondrogenic differentiation,10μg·LTGF-β3 or 100μg·LBMP-6 and the combination treating group for synergistic effect of the growth factors.We analyzed the PDLSCs by fluorescence-activated cell sorting and chondrogenesis were evaluated by glycosaminoglycans assay,histology,immunohistochemistry and genetic analysis.PDLSCs showed mesenchymal stem cell properties proved by FACS analysis.Glycosaminoglycans contents were increased 217%by TGF-β3 and 220%by BMP-6. The synergetic effect of TGF-β3 and BMP-6 were shown up to 281%compared to control.The combination treatment increased Sox9, aggrecan and collagen II expression compared with not only controls,but also TGF-P3 or BMP-6 single treatment dramatically.The histological analysis also indicated the chondrogenic differentiation of PDLSCs in our conditions.The results of the present study demonstrate the potential of the dental stem cell as a valuable cell source for chondrogenesis,which may be applicable for regeneration of cartilage and bone fracture in the field of cell therapy.
文摘The Tyro3, Axl and Mer (TAM) receptor tyrosine kinases are activated by endogenous ligands, protein S1 (PROS1) and growth arrest-specific gene 6 (Gas6), and those have important effects on cell biology. These receptors (Rs) can be shad from the cell membrane and their soluble(s) forms can be found in plasma. We investigated the fluctuation and interactive role of sTAMRs and its ligands in patients with hepatocellular carcinoma (HCC), hepatitis groups, and healthy normal adult controls (NC). The measurement cases were 45 patients with HCC group (stage 1 in 4, stage 2 in 8, stage 3 in 16, and stage 4 in 17), 4 patients with fulminant hepatitis (FH), 14 patients with acute hepatitis (AH), 10 patients with chronic hepatitis (CH), 16 patients with liver cirrhosis (LC), and 20 NCs matched by age. Plasma levels of three sTAMRs and their ligands were measured by ELISA. In comparison with NCs, Gas6, des-γ-carboxy Gas6, and sTAMRs levels were significantly higher in HCC patients, but free PROS1 levels were significantly lower. The sTyro3 and sAxl levels peaked HCC stages 2 and 3 respectively, and gradually decreased afterwards while maintaining high levels. sMer levels increased with the progression of HCC. Gas6 and des-γ-carboxy Gas6 levels gradually increased, and PROS1 levels decreased with the progression of HCC. Gas6 levels were positively correlated with sAxl levels, whereas sMer levels were negatively correlated with free PROS1 levels. sTAMRs and Gas6 levels increased in parallel to the progression of HCC fibrosis. Through the progression of HCC, Axl played the major role in TAMRs activation. However, sTYro3 continued increasing rapidly from the early stage, and that of Mer increased throughout the progression. Roles of Axl may be changed in Mer, because des-γ-carboxy Gas6 levels increasing with Gas6 in the advanced stage of HCC cannot send a signal to Axl.
