山芝麻含药血清对HepG2.2.15细胞HBV复制的抑制作用

目的观察山芝麻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)进行山芝麻抗HBV作用观察。结果山芝麻含药血清在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。结论山芝麻在体外能明显抑制HBV。     

六月青总皂苷对HepG2.2.15细胞HBV复制的抑制作用

目的 观察六月青总皂z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.     

Antiviral activities of extracts isolated from Terminalis chebula Retz., Sanguisorba officinalis L., Rubus coreanus Miq. and Rheum palmatum L. against hepatitis B virus.

The antiviral effects of aqueous extracts of Terminalis chebula Retz., Sanguisorba officinalis L., Rubus coreanus Miq. and Rheum palmatum L. were examined by a cell culture system using a hepatitis B virus (HBV) producing cell line, HepG2 2.2.15. The extracts were assayed for the inhibition of HBV multiplication by measurement of HBV DNA and surface antigen (HBsAg) levels in the extracellular medium of HepG2 2.2.15 cells after an 8-day treatment. All extracts decreased the levels of extracellular HBV virion DNA at concentrations ranging from 64 to 128 microg/mL and inhibited the secretion of HBsAg dose dependently. Of the four tested plants, Terminalis chebula exhibited the most prominent anti-HBV activities.     

白藜芦醇及其衍生物抗乙型肝炎病毒体外实验研究

 目的 探讨白藜芦醇(resveratrol,反式3,4′,5-三羟基-二苯乙烯)及其衍生物体外抗乙型肝炎病毒(HBV)的作用,及相关 的量效关系与构效关系。方法 将白藜芦醇及其衍生物作用于HepG2.2.15细胞系,MTT法检测样品对HepG2.2.15细胞的毒 性,ELISA法检测细胞上清中HBsAg,HBeAg的变化,实时荧光定量PCR法检测细胞与其上清中总HBV DNA含量,流式细胞仪 检测白藜芦醇时HepG2.2.15的凋亡作用,进行综合评价。结果 白藜芦醇对抑制HepG2.2.15细胞分泌HBsAg,HBeAg治疗指 数(TI)分别为(3.26±0.39),(2.91±0.12);在低毒或无毒浓度(0.11 mol·L^-1)下降低DNA拷贝数;呈浓度依赖性诱导 HepG2.2.15细胞凋亡。结论 白藜芦醇及其衍生物在体外有一定的抗乙型肝炎病毒作用,可能是通过抑制HBV DNA复制, 诱导感染HBV的HepG2.2.15细胞凋亡而发挥抗病毒活性。综合评价白藜芦醇及其衍生物的活性,即白藜芦醇苷(Rn1)、甲氧 基取代羟基的苷[4′-甲氧基-3,3′,5-二苯乙烯-3-葡萄糖苷(Rn3)]效果较好。     

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??OBJECTIVE To evaluate the anti-hepatitis B virus (HBV) activity of herpetrione nanosuspension (PEDX-NS) both in vitro and in vivo. METHODS HepG2 2.2.15 cells and duck hepatitis B virus (DHBV) infected ducks as in vitro and in vivo models were used to compare the anti-HBV activity of PEDX-NS and PEDX coarse suspension (PEDX-CS). RESULTS In the HepG2 2.2.15 cell, PEDX-NS effectively suppressed the secretion of the HBV antigens (HBsAg and HBeAg) in a dose-dependent manner with significant difference from PEDX-CS (P<0.05 or P<0.01). In the in vivo evaluation, PEDX-NS with high dose (100 mg??kg^-1) and middle dose (60 mg??kg^-1) significantly reduced the serum HBV DNA level (P<0.05 or P<0.01) and the effect was better than that of PEDX-CS (P<0.05 or P<0.01). CONCLUSION The result revealed that PEDX-NS exhibits anti-HBV activity both in vitro and in vivo and its effect was superior to that of PEDX-CS. The mechanism is probably that the small particle size of PEDX-NS provides a large specific surface area that resulted in better absorption in vivo, thus enhancing its anti-HBV activity.
     

蜗牛多糖体外抗乙型肝炎病毒作用研究

目的:探讨蜗牛多糖抗乙肝病毒活性。方法:将不同浓度蜗牛多糖与HepG2.2.15细胞株共培养,以拉米夫定为阳性对照药,用ELISA法检测HBsAg和HBeAg分泌水平,实时荧光定量PCR检测HBV DNA含量,计算抑制率。结果:蜗牛多糖在体外能有效抑制HepG2.2.15细胞HBsAg和HBeAg分泌,最大抑制率分别为42.8%和52.1%;对HBV DNA的复制有一定抑制作用(P<0.05)。结论:蜗牛多糖在体外具有显著的抗乙型肝炎病毒作用,且毒性较小,具有良好应用前景。     

复方六月雪对HepG2.2.15细胞HBV DNA的抑制作用

目的:观察复方六月雪体外抗乙型肝炎病毒(HBV)的作用。方法:采用MTT法检测复方六月雪对HepG2.2.15细胞的半数毒性浓度(TC50)和最大无毒浓度(TC0);在最大无毒浓度(TC0)基础上观察不同浓度药物作用于HepG2.2.15细胞,分别在第72h和144h收集细胞培养上清液,采用实时荧光定量PCR法检测上清液HBV DNA的含量。结果:TC50为3.070mg/ml,TC0为0.945mg/ml,复方六月雪对HepG2.2.15细胞毒性较低。无毒浓度下的复方六月雪在HepG2.2.15细胞培养中可有效地抑制细胞HBVDNA的复制。结论:CLYX在体外有显著的抗HBV的作用,且毒性较低。     

青钱柳提取物对HepG2 2.2.15细胞HBsAg和HBeAg表达的影响

目的研究青钱柳提取物体外抗乙肝病毒作用。方法青钱柳用75%乙醇提取后按溶剂极性萃取,获得的三氯甲烷部位经柱层析得到Fr.2组分。体外培养HepG2 2.2.15细胞,MTT法检测青钱柳提取物Fr.2组分对HepG22.2.15细胞的细胞毒作用,用ELISA法检测HepG2 2.2.15细胞培养液中HBsAg和HBeAg的表达。结果青钱柳提取物Fr.2组分对HepG2 2.2.15细胞无明显的细胞毒作用。与对照组比较,Fr.2组分对HBsAg和HBeAg的表达均有显著性抑制作用(P<0.01或0.05)。结论青钱柳提取物体外具有较强的抗乙肝病毒作用。     

氧化苦参碱体外抗乙型肝炎病毒作用

目的:体外观察氧化苦参碱(OM)抗乙型肝炎病毒(HBV)作用,并初步探讨其作用机制.方法:用125,250,500,1000,2000 mg·L-1OM连续作用于90％汇合度的HepG2.2.15细胞9d,以MTT比色法观察药物细胞毒性;用酶联免疫法测定细胞上清液中乙型肝炎病毒e抗原(HBeAg),乙型肝炎病毒s抗原(HBsAg);采用荧光定量PCR法(FQ-PCR)测定细胞上清液中HBV DNA,细胞中HBV DNA和共价闭合环状DNA(cccDNA).结果:OM对细胞内HBV DNA和cccDNA,以及细胞外HBV DNA均有抑制作用,随着浓度升高抑制作用加强,2000 mg·L-1OM对细胞内HBV DNA,cccDNA和细胞外HBV DNA的抑制率分别为64.56％,52.12％,54.25％;对HBsAg和HBeAg的分泌也有抑制作用,且浓度越高、处理时间越长,抑制作用越明显;在相同条件下对HBsAg的抑制作用强于HBeAg,OM浓度为2000 mg·L-1时对HBsAg和HBeAg的抑制率分别为51.59％,17.88％.结论:OM能有效抑制HepG2.2.15细胞中HBV复制,该作用是抑制病毒核酸复制和基因表达的结果.     

Effects of Rubiadin isolated from Prismatomeris connata on anti‐hepatitis B virus activity in vitro

Prismatomeris connata was a kind of Rubiaceae plant for treatment of hepatitis, hepatic fibrosis and silicosis. Whereas, the effective components of Prismatomeris connata remains unexplored. The aim of this study was to investigate the inhibitory effects and mechanisms of Rubiadin isolated from Prismatomeris connata against HBV using HepG2.2.15 cells. The levels of hepatitis B surface antigen (HBsAg), hepatitis B e antigen (HBeAg), and hepatitis B core antigen (HBcAg) in the supernatants or cytoplasm were examined using by enzyme‐linked immunosorbent assay. HBV DNA was qualified q‐PCR. Rubiadin was isolated by silica gel column. The structure of the compound was elucidated by HPLC, FT‐IR, ¹H‐NMR, ¹³C‐NMR and identified as 1,3‐Dihydroxy‐2‐methyl‐9, 10‐anthraquinone. Rubiadin significantly decreased HBeAg,HBcAg secretion level and inhibit HBV DNA replication. Rubiadin inhibits the proliferation of the cells and HBx protein expression in a dose‐dependent manner. The intracellular calcium concentration was significantly reduced. These results demonstrated that Rubiadin could inhibit HepG2.2.15 cells proliferation, reduce the level of HBx expression, and intracellular free calcium, which might become a novel anti‐HBV drug candidate.     

Hepatoprotective and antiviral properties of isochlorogenic acid A from Laggera alata against hepatitis B virus infection

Ethnopharmacological relevance

The aim of this study was to determine the anti-hepatitis B effect of isochlorogenic acid A isolated from Laggera alata (Asteraceae), a traditional Chinese herbal medicine.

Materials and methods

The anti-hepatitis B activity of isochlorogenic acid A was evaluated by the d-galactosamine (D-GalN)-induced HL-7702 hepatocyte damage model and the HBV-transfected HepG2.2.15 cells.

Results

Isochlorogenic acid A significantly improved HL-7702 hepatocyte viability and markedly inhibited the productions of HBsAg and HBeAg. The inhibitory rates of isochlorogenic acid A on the HBsAg and HBeAg expressions were 86.9% and 72.9%, respectively. In addition, isochlorogenic acid A declined markedly the content of hepatitis B virus covalently closed circular DNA (HBV cccDNA) and induced significantly the heme oxygenase-1 (HO-1) expression in HepG2.2.15 cells.

Conclusions

Isochlorogenic acid A was verified to possess the potent anti-hepatitis B activity. The anti-HBV target of isochlorogenic acid A is probably associated with blocking the translation step of the HBV replication. Overexpression of HO-1 may contribute to the anti-HBV activity of isochlorogenic acid A by reducing the stability of the HBV core protein and thus blocking the refill of nuclear HBV cccDNA. Additionally, the hepatoprotective effect of isochlorogenic acid A could be achieved by its antioxidative property and induction of HO-1.     

复方六月雪含药血清对HepG2.2.15细胞HBsAg和HBeAg的抑制作用

目的:观察复方六月雪(六月雪、白花蛇舌草、栀子根等)体外抗HBV的作用。方法:采用血清药理学法进行实验,复方六月雪含药血清作用于HepG2.2.15细胞,分别在第72h和144h收集细胞培养上清液,采用ELISA法测定上清液HBsAg和HBeAg的滴度。结果:复方六月雪含药血清在HepG2.2.15细胞培养中可有效地抑制细胞HBsAg和HBeAg的表达(P<0.05、P<0.01),抑制作用有明显的量效反应关系。结论:复方六月雪含药血清在体外具有显著的抗HBV作用。     

槐果碱体外对HepG2.2.15细胞分泌HBsAg HBeAg的影响

目的:探讨槐果碱的体外抗乙型肝炎病毒作用。方法:采用HepG2.2.15细胞模型进行体外培养,给予不同浓度槐果碱,以拉米夫定作阳性对照,作用9天后检测上清液中HBsAg、HBeAg的分泌,观察药物对HepG2.2.15细胞分泌HBV病毒抗原的影响,同时以MTT法检测药物在体外对HepG2.2.15细胞的生长抑制作用,从而评价药物的抗HBV作用。结果:药物作用9天后,槐果碱对HepG2.2.15细胞的50%生长抑制率(TC50)为0.002M,对HepG2.2.15细胞分泌HBsAg的50%抑制率(IC50)为4.9uM,其治疗指数(TI=TC50/IC50)为408.16;而拉米夫定对HepG2.2.15细胞分泌HBsAg的抑制率在所选浓度范围内均低于50%。槐果碱对HepG2.2.15细胞分泌HBeAg的抑制率在所选浓度范围内均低于50%,但明显优于拉米夫定对HepG2.2.15细胞分泌HBeAg的抑制率。结论:槐果碱在体外具有显著的抑制HepG2.2.15细胞分泌HBsAg、HBeAg的作用,是一个高效低毒的抗乙肝病毒的有效药物。     

狭叶五味子中化合物扁枝杉香豆素和(-)-表儿茶酸体外抗乙型肝炎病毒活性研究

目的 研究从狭叶五味子Schisandra lancifolia中分离化合物扁枝杉香豆素(phyllocoumarin)和(-)-表儿茶酸[(-)-epicatechin]的体外抗乙型肝炎病毒(HBV)活性.方法 为了筛选和确认扁枝杉香豆素和(-)-表儿茶酸体外抗HBV活性,以HepG2.2.15细胞为体外研究HBV模型,分别用RPMI 1640完全培养基稀释不同质量浓度的药物作用于细胞,培养3 d后收集上清,采用MTT法检测药物对HepG2.2.15细胞的生长影响和ELISA法检测培养上清中HBsAg和HBeAg的水平,评价扁枝杉香豆素和(-)-表儿茶酸对HBsAg和HBeAg的影响.结果 扁枝杉香豆素和(-)-表儿茶酸具有一定的体外抗HBV活性,其细胞毒性非常小,CC_(50)均大于200μg/mL.扁枝杉香豆素具有较强的抑制HBsAg和HBeAg分泌作用.阳性对照药物阿德福韦酯也抑制HBVHBsAg和HBeAg分泌,但在相同质量浓度(1.6μg/mL)下其抑制作用较扁枝杉香豆素弱.结论 狭叶五味子中化合物扁枝杉香豆素和(-)-表儿茶酸具有一定体外抑制HBV HBsAg和HBeAg分泌的作用,从而起到抗HBV作用.     

Inhibiting effects of the ethanol-soluble extracts from the dried rhizoma of Garcinia oblougififolia on hepatitis B virus in vitro]

Comparing with Ara-Amp, the effects of the ethano-soluble extracts from the dried rhizoma of Garcinia oblougififolia Champ (GOC) on HBeAg and HBsAg expression in 2.2.15 cells, which came from transfected HepG2 cells with coloned HBV DNA, were studied. The results showed that the extracts of GOC had a marked inhibition effects on HBeAg adn HBsAg which expressed by 2.2.15 cells, the effective concentration was range from 195 to 780 micrograms/ml.     

毛鸡骨草含药血清体外抗乙型肝炎病毒作用的研究

目的:观察毛鸡骨草(Abrus mollis)含药血清体外抗乙型肝炎病毒(HBV)的作用。方法:采取中药血清药理实验方法,以HepG2.2.15细胞为研究模型,将毛鸡骨草含药血清加入HepG2.2.15细胞培养液中培养,分别在72 h和144 h收集细胞培养上清液,采用酶联免疫吸附实验法(ELISA法)和荧光定量PCR(FQ-PCR)法检测毛鸡骨草含药血清对HepG2.2.15细胞株表达的乙型肝炎表面抗原(HBsAg)和HBV DNA复制的影响。结果:毛鸡骨草含药血清对HepG2.2.15细胞上清液中HBsAg的表达和HBV DNA复制都有不同程度的抑制,以给药剂量为30 g·kg-1·d-1的毛鸡骨草含药血清组作用144 h对HBsAg的抑制率和对HBV DNA复制的抑制率最明显,抑制率分别为34.4%和41.7%。结论:毛鸡骨草在体外有一定的抗HBV作用。     

中国圆田螺多糖体外抗乙肝病毒的实验研究

目的:探讨中国圆田螺多糖(PCC)体外抗乙肝病毒的生物学活性.方法:以HepG2 2.2.15细胞系为体外实验模型.MTT法检测细胞毒性,将不同安全浓度的PCC及阳性对照药物3TC作用于此细胞系,实验同时设不加药物的细胞对照,第9天收集细胞培养上清液.采用ELISA法测定各组细胞培养上清液中HBsAg,HBeAg水平,荧光探针定量PCR检测HBV-DNA含量.结果:PCC在HepG2 2.2.15细胞培养中的TCo为1g·L-1,TC50 ＞10 g·L-1,对细胞毒性较小.PCC对HepG2 2.2.15细胞HBsAg,HBeAg分泌的IC50分别为0.501,0.401 g·L-1,SI分别为＞19.96和＞24.94.PCC可以有效抑制HBsAg,HBeAg的分泌,且PCC对HBeAg的抑制效果优于HBsAg.PCC在0.1,1g·L-1(P＜0.05)对HepG2 2.2.15细胞中的HBV-DNA有明显的抑制作用.结论:中国圆田螺多糖具有一定的体外抗HBV活性,且毒性较小,具有良好的应用前景.     

Anti-hepatitis B Virus Activity of 8-epi-Kingiside in Jasminum officinale var. grandiflorum

Objective To evaluate the effect of 8-epi-kingiside (8-Epik) derived from the buds of Jasminum officinale var. grandiflorum (JOG) on hepatitis B virus (HBV) replication in HepG2 2.2.15 cell line in vitro and duck hepatitis B virus (DHBV) replication in ducklings in vivo. Methods The concentration of extracellular hepatitis B e antigen and hepatitis B surface antigen (HBsAg) in cell culture medium was determined by ELISA, respectively. The anti-HBV effects of 8-Epik were also demonstrated in the model of DHBV. 8-Epik was ip given (20, 40, and 80 mg/kg, twice daily) to the DHBV-infected ducklings for 10 d. The isotonic saline liquid diet was ip given as negative control and Lamivudine (50 mg/kg, twice daily) was given as positive control. DHBV DNA was measured at days 0 (T0), 5 (T5), 10 (T10), and day 3 after cessation of treatment (P3) by dot blotting. Results 8-Epik effectively blocked HBsAg secretion in HepG2 2.2.15 cells in a dose-dependent manner [IC 50 = (19.4 ± 1.04) μg/mL]. 8-Epik (40 or 80 mg/kg, ip, twice daily) also reduced viremia in DHBV-infected ducks. Conclusion Therefore, 8-Epik is warranted as a potential therapeutic agent for HBV infection.