Liver diseases with the central pathogenetic mechanism of oxidative stress are one of the main causes of mortality worldwide.Therefore,dihydroquinoline derivatives,which are precursors of hepatoprotectors and have ant...Liver diseases with the central pathogenetic mechanism of oxidative stress are one of the main causes of mortality worldwide.Therefore,dihydroquinoline derivatives,which are precursors of hepatoprotectors and have antioxidant activity,are of interest.We have previously found that some compounds in this class have the ability to normalize redox homeostasis under experimental conditions.Here,we initially analyzed the hepatoprotective potential of the dihydroquinoline derivative 1-benzoyl-6-hydroxy-2,2,4-trimethyl-1,2-dihydroquinoline(BHDQ)for carbon tetrachloride(CCl4)-induced liver injury in rats.Results suggested that BHDQ normalized the alanine aminotransferase,aspartate aminotransferase,and gamma-glutamyl transpeptidase in serum.We also observed an improvement in liver tissue morphology related to BHDQ.Animals with CCl4-induced liver injuries treated with BHDQ had less oxidative stress compared to animals with CCl4-induced liver injury.BHDQ promoted activation changes in superoxide dismutase,catalase,glutathione peroxidase,glutathione reductase,and glutathione transferase on control values in animals with CCl4-induced liver injury.BHDQ also activated gene transcription in Sod1 and Gpx1 via nuclear factor erythroid 2-related factor 2 and forkhead box protein O1 factors.Therefore,the compound of concern has a hepatoprotective effect by inhibiting the development of necrotic processes in the liver tissue,through antioxidation.展开更多
The facile and efficient total syntheses of monoterpenoid acid 7a and its ester 7b, isolated from Artemisia siebert and Piper aduncum respectively, can be completed in four steps with an overall yield 41%.
目的:探讨M2型肿瘤相关巨噬细胞(M2 type tumor-associated macrophage,M2-TAMs)介导白细胞介素6(interleukin-6,IL-6)-Janus激酶2(Janus kinase 2,JAK2)/信号转导及转录激活因子3(signal transducer and activator of transcription 3,...目的:探讨M2型肿瘤相关巨噬细胞(M2 type tumor-associated macrophage,M2-TAMs)介导白细胞介素6(interleukin-6,IL-6)-Janus激酶2(Janus kinase 2,JAK2)/信号转导及转录激活因子3(signal transducer and activator of transcription 3,STAT3)轴促进胃癌干性和侵袭迁移的作用机制。方法:应用TCGA数据库分析胃癌及癌旁正常组织M2-TAMs的分布与干性指标的关系,并在胃癌患者组织水平进行验证。体外通过成球实验检测胃癌细胞的干性潜能并构建M2-TAMs体外共培养体系,运用qRT-PCR和Western blot技术检测肿瘤干性标志物CD44和醛脱氢酶1(aldehyde dehydrogenase 1,ALDH1)的变化,通过Transwell实验探究胃癌迁移、侵袭能力的变化。利用转录组测序筛选差异基因,通过KEGG富集分析探寻关键通路,并采用中和抗体及通路抑制剂进行相关性验证。结果:TCGA数据库分析和体内组织验证结果均表明胃癌组织中M2-TAMs的密度显著高于癌旁正常组织,且其数量的增加与肿瘤干性标志(CD44和ALDH1)呈正相关。与M2-TAMs共培养的胃癌细胞在CD44和ALDH1的mRNA及蛋白表达水平较对照组显著升高,同时共培养组肿瘤细胞成球率和侵袭迁移能力均显著增强,JAK2/STAT3信号通路关键蛋白表达水平显著升高。KEGG通路分析发现STAT3是肿瘤干性调控的关键基因。与极化前的巨噬细胞相比,极化的M2-TAMs有22个上调分泌因子,其中IL-6显著升高,且与患者不良预后相关。加入stattic(选择性STAT3信号通路抑制剂)和(或)IL-6中和抗体均能抑制胃癌细胞的干性、迁移和侵袭。以上结果P值均<0.05。结论:M2-TAMs通过分泌IL-6介导JAK2/STAT3信号通路激活胃癌细胞干性潜能,进而促进胃癌的侵袭和迁移。展开更多
磷酸酶互作蛋白2(Phosphatase-interacting protein 2,PSTPIP2)和溶质载体家族6成员18(Solute carrier family 6 member 18,SLC6A18)基因在动物先天性自身免疫中发挥着重要的作用。为探讨PSTPIP2基因g.43165308C>T位点和SLC6A18基因g...磷酸酶互作蛋白2(Phosphatase-interacting protein 2,PSTPIP2)和溶质载体家族6成员18(Solute carrier family 6 member 18,SLC6A18)基因在动物先天性自身免疫中发挥着重要的作用。为探讨PSTPIP2基因g.43165308C>T位点和SLC6A18基因g.8294767T>C位点多态性与牦牛免疫性状的关联性,本研究对189头娘亚牦牛的PSTPIP2基因g.43165308C>T位点和SLC6A18基因g.8294767T>C位点进行了PCR扩增,并利用PARMS SNP分型,采用IBM SPSS Statistics 26.0软件分析了不同基因位点与牦牛免疫球蛋白、炎症标志物及细胞因子等免疫性状的关联性。结果表明,PSTPIP2基因g.43165308C>T位点存在CC、CT和TT三种基因型,优势等位基因和基因型分别是C和CC,其频率分别为0.720和0.534。PSTPIP2基因g.43165308C>T位点属于中度多态位点,且处于Hardy-Weinberg平衡状态(P>0.05)。SLC6A18基因g.8294767T>C位点存在CC、TC和TT三种基因型,优势等位基因和基因型分别是T和TT,其频率分别为0.796和0.660。SLC6A18基因g.8294767T>C位点属于中度多态位点,且处于Hardy-Weinberg不平衡状态(P<0.05)。关联分析结果表明,PSTPIP2基因g.43165308C>T位点与牦牛免疫球蛋白A(IgA)、免疫球蛋白M(IgM)、C反应蛋白(CRP)、白介素-2(IL-2)、白介素-4(IL-4)、白介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)均呈显著相关(P<0.05);SLC6A18基因g.8294767T>C位点与C反应蛋白(CRP)、白介素-4(IL-4)、干扰素-γ(IFN-γ)均呈显著相关(P<0.05)。综上所述,PSTPIP2和SLC6A18基因的多态性与牦牛免疫性状显著相关,这两个基因可能是影响牦牛免疫性状的潜在候选基因。展开更多
基金supported by the Russian Foundation for Basic Research (Grant No. 20-04-00526А)
文摘Liver diseases with the central pathogenetic mechanism of oxidative stress are one of the main causes of mortality worldwide.Therefore,dihydroquinoline derivatives,which are precursors of hepatoprotectors and have antioxidant activity,are of interest.We have previously found that some compounds in this class have the ability to normalize redox homeostasis under experimental conditions.Here,we initially analyzed the hepatoprotective potential of the dihydroquinoline derivative 1-benzoyl-6-hydroxy-2,2,4-trimethyl-1,2-dihydroquinoline(BHDQ)for carbon tetrachloride(CCl4)-induced liver injury in rats.Results suggested that BHDQ normalized the alanine aminotransferase,aspartate aminotransferase,and gamma-glutamyl transpeptidase in serum.We also observed an improvement in liver tissue morphology related to BHDQ.Animals with CCl4-induced liver injuries treated with BHDQ had less oxidative stress compared to animals with CCl4-induced liver injury.BHDQ promoted activation changes in superoxide dismutase,catalase,glutathione peroxidase,glutathione reductase,and glutathione transferase on control values in animals with CCl4-induced liver injury.BHDQ also activated gene transcription in Sod1 and Gpx1 via nuclear factor erythroid 2-related factor 2 and forkhead box protein O1 factors.Therefore,the compound of concern has a hepatoprotective effect by inhibiting the development of necrotic processes in the liver tissue,through antioxidation.
基金Supported by the Natural Science FoundationofChina(No.2 0 0 6 2 0 0 1) ,and the Natural Science Foundation ofGuangxi Province( No.0 135 0 2 0 and No.0 0 0 70 16 )
文摘The facile and efficient total syntheses of monoterpenoid acid 7a and its ester 7b, isolated from Artemisia siebert and Piper aduncum respectively, can be completed in four steps with an overall yield 41%.
文摘目的:探讨M2型肿瘤相关巨噬细胞(M2 type tumor-associated macrophage,M2-TAMs)介导白细胞介素6(interleukin-6,IL-6)-Janus激酶2(Janus kinase 2,JAK2)/信号转导及转录激活因子3(signal transducer and activator of transcription 3,STAT3)轴促进胃癌干性和侵袭迁移的作用机制。方法:应用TCGA数据库分析胃癌及癌旁正常组织M2-TAMs的分布与干性指标的关系,并在胃癌患者组织水平进行验证。体外通过成球实验检测胃癌细胞的干性潜能并构建M2-TAMs体外共培养体系,运用qRT-PCR和Western blot技术检测肿瘤干性标志物CD44和醛脱氢酶1(aldehyde dehydrogenase 1,ALDH1)的变化,通过Transwell实验探究胃癌迁移、侵袭能力的变化。利用转录组测序筛选差异基因,通过KEGG富集分析探寻关键通路,并采用中和抗体及通路抑制剂进行相关性验证。结果:TCGA数据库分析和体内组织验证结果均表明胃癌组织中M2-TAMs的密度显著高于癌旁正常组织,且其数量的增加与肿瘤干性标志(CD44和ALDH1)呈正相关。与M2-TAMs共培养的胃癌细胞在CD44和ALDH1的mRNA及蛋白表达水平较对照组显著升高,同时共培养组肿瘤细胞成球率和侵袭迁移能力均显著增强,JAK2/STAT3信号通路关键蛋白表达水平显著升高。KEGG通路分析发现STAT3是肿瘤干性调控的关键基因。与极化前的巨噬细胞相比,极化的M2-TAMs有22个上调分泌因子,其中IL-6显著升高,且与患者不良预后相关。加入stattic(选择性STAT3信号通路抑制剂)和(或)IL-6中和抗体均能抑制胃癌细胞的干性、迁移和侵袭。以上结果P值均<0.05。结论:M2-TAMs通过分泌IL-6介导JAK2/STAT3信号通路激活胃癌细胞干性潜能,进而促进胃癌的侵袭和迁移。
文摘磷酸酶互作蛋白2(Phosphatase-interacting protein 2,PSTPIP2)和溶质载体家族6成员18(Solute carrier family 6 member 18,SLC6A18)基因在动物先天性自身免疫中发挥着重要的作用。为探讨PSTPIP2基因g.43165308C>T位点和SLC6A18基因g.8294767T>C位点多态性与牦牛免疫性状的关联性,本研究对189头娘亚牦牛的PSTPIP2基因g.43165308C>T位点和SLC6A18基因g.8294767T>C位点进行了PCR扩增,并利用PARMS SNP分型,采用IBM SPSS Statistics 26.0软件分析了不同基因位点与牦牛免疫球蛋白、炎症标志物及细胞因子等免疫性状的关联性。结果表明,PSTPIP2基因g.43165308C>T位点存在CC、CT和TT三种基因型,优势等位基因和基因型分别是C和CC,其频率分别为0.720和0.534。PSTPIP2基因g.43165308C>T位点属于中度多态位点,且处于Hardy-Weinberg平衡状态(P>0.05)。SLC6A18基因g.8294767T>C位点存在CC、TC和TT三种基因型,优势等位基因和基因型分别是T和TT,其频率分别为0.796和0.660。SLC6A18基因g.8294767T>C位点属于中度多态位点,且处于Hardy-Weinberg不平衡状态(P<0.05)。关联分析结果表明,PSTPIP2基因g.43165308C>T位点与牦牛免疫球蛋白A(IgA)、免疫球蛋白M(IgM)、C反应蛋白(CRP)、白介素-2(IL-2)、白介素-4(IL-4)、白介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)均呈显著相关(P<0.05);SLC6A18基因g.8294767T>C位点与C反应蛋白(CRP)、白介素-4(IL-4)、干扰素-γ(IFN-γ)均呈显著相关(P<0.05)。综上所述,PSTPIP2和SLC6A18基因的多态性与牦牛免疫性状显著相关,这两个基因可能是影响牦牛免疫性状的潜在候选基因。
