• Journal of Nutrition and Health
• /
• 제33권1호
• /
• pp.80-85
• /
• 2000

This study was undertaken to investigate the inhibitory effects of propolis on the in vitro proliferation of human colon(HT-29) and hepatoma(HepG2) cancer cell lines. The growth of the HT-29 and HepG2 cells was respectively inhibited by the administration of propolis in a concentration response-dependent manner. The distributions of HT-29 and HepG2 cells cultured in the medium containing propolis were shifted to the smaller sizes, and then HT-29 and HepG2 cells were shrunken under microscopic observations. The progression of cell cycle from G1 to S phase was significantly inhibited by propolis in the HT-29 and HepG2 cell lines, respectively. Those observations suggest that propolis has anticancer effect against some of cancer cell lines in vitro. (Korean J Nutrition 33(1) : 80-85, 2000)

• Advances in Traditional Medicine
• /
• 제1권1호
• /
• pp.89-96
• /
• 2000

A human hepatoma cell line, Hep G2 cells are a reliable for the study of alcohol-induced hepatotoxicity. In this study, the author investigated the effect of an aqueous extract of Asparagus $cochinchinensis_{MERRIL}$ (Liliaceae) roots (ACAE) on ethanol (EtOH)-induced cytotoxicity in Hep G2 cells. ACAE dose-dependently inhibited the EtOH-induced tumor necrosis $factor-{\alpha}\;(TNF-{\alpha})$ secretion. ACAE also inhibited the EtOH and $TNF-{\alpha}-induced$ cytotoxicity. Furthermore, the author found that ACAE inhibited the $TNF-{\alpha}-induced$ apoptosis of Hep G2 cells. These results suggest that ACAE may prevent the EtOH-induced cytotoxicity through inhibition of the apoptosis of Hep G2 cells.

• Asian Pacific Journal of Cancer Prevention
• /
• 제16권5호
• /
• pp.1771-1779
• /
• 2015

Hepatocellular carcinoma (HCC) is a leading cause of cancer death worldwide. Presently, targeted therapy via monoclonal antibodies to specific tumor-associated antigens is being continuously developed. Hep88 mAb has proven to exert tumoricidal effects on the HepG2 cell via a paraptosis-like morphology. To verify the pathway, we then demonstrated downstream up-regulation of caspase-3, caspase-8 and caspase-9, assessingmRNA expression by real-time PCR and associated enzyme activity by colorimetric assay. Active caspase-3 determination was also accomplished by flow cytometry. Active caspase-3 expression was increased by Hep88 mAb treatment in a dose-and time-dependent manner. All of the results indicated that Hep88 mAb induced programmed cell death in the HepG2 cell line from paraptosis-like to apoptosis by downstream induction of caspases. These conclusions imply that Hep88mAb might be a promising tool for the effective treatment of HCC in the future.

• Asian Pacific Journal of Cancer Prevention
• /
• 제17권2호
• /
• pp.703-712
• /
• 2016

Monoclonal antibodies with specific antigens have been widely used as targeted therapy for cancer. Hep88 mAb is a monoclonal antibody which shows specific binding with anti-cancer effects against the HepG2 cell line. However, its mechanisms of action are still not completely understood. We examined cell cycling and apoptosis by flow cytometry and mRNA expression of factors involved in apoptosis and paraptosis in Hep88 mAb-treated HepG2 cells by real-time PCR. The cell-cycle analysis demonstrated that growth-inhibitory activity was associated with G2/M cell cycle arrest. Hep88 mAb induced a significant increase in apoptotic cell populations in a dose- and time-dependent manner. The mRNA expression results also suggested that the process triggered by Hep88 mAb involved up-regulation of tumor suppressor p53, pro-apoptotic Bax, Cathepsin B, Caspase-3 and Caspase-9, with a decrease of anti-apoptotic Bcl-2 - thus confirming paraptosis and apoptosis programmed cell death. These findings represent new insights into the molecular mechanisms underlying the anti-cancer properties of Hep88 mAb in liver cancer cells.

• 대한한방내과학회지
• /
• 제37권3호
• /
• pp.442-452
• /
• 2016

Objectives: This study was performed to investigate the anti-lipogenic effect and the mechanism of Jungmanbunso-hwan extract (JMBSH) on a cellular model of non-alcoholic fatty liver disease (NAFLD) caused by palmitate in HepG2 cells.Methods: The JMBSH was prepared, andHepG2 cells were treated with various concentrations of JMBSH in order to perform an MTT assay. The HepG2 cells were cultivated in palmitate-containing media with or without extract of JMBSH. The intracellular lipid content in the HepG2 cells was examined. The effects of JMBSH on sterol regulatory element-binding transcription factor-1c (SREBP-1c), acetyl-CoA carboxylase (ACC), fatty acid synthase (FAS), stearoyl-CoA desaturase-1 (SCD-1), and AMP-activated protein kinase (AMPK) activation in HepG2 cells were measured.Results: JMBSH did not reduce HepG2 cell viability under 1,000 μg/mL. JMBSH considerably decreased intracellular lipid accumulation caused by palmitate in HepG2 cells. JMBSH repressed expression of SREBP-1c, which mediates the induction of lipogenic genes (ACC, FAS, and SCD-1). JMBSH also activated AMPK, which plays animportant role in the regulation of hepatic lipid metabolism.Conclusions: This study suggested that JMBSH relieves hepatic steatosis by repressing SREBP-1c, which mediates the induction of lipogenic genes. The anti-lipogenic effect of JMBSH may also be related to the activation of AMPK. Therefore, JMBSH could potentially be applied to NAFLD treatment after further clinical studies.

• 대한한의학회지
• /
• 제16권2호
• /
• pp.386-413
• /
• 1995

In order to prove the antitumor effect of Taraxaci Herba experimentally, studies were done. The antitumor effect against hepatic cancers such as Hep G2. Hep 3B & PLC and also the synergstric action was evaluated in the combined treatment with anticancer drugs using chiefly for liver cancer. such as. The results were obtained as follows: 1.$IC_{50}$ against Hep G2. Hep 3B and PLC was $15.5{\mu}g/ml.\;25.4{\mu}g/ml,\;31.25{\mu}g/ml$ in Mitomycin C(MMC), $92.5{mu}g/ml,\;50.2{\mu}g/ml,\;62.5{\mu}g/ml $in cisplatin(CPT) and 125 in 5-flurouracil(5-FU) respectively. 2. In cytotoxic effect against Hep G2 every fractions showed the anti tumor effect as compared with the data of control but EE fraction of Taraxaci Herba was most effective and also hexane fraction was most effective in the combined treatment with anticancer drugs. 3. In cytotoxic effect against Hep 3B every fractions showed the antitumor effect as compared with the data of control but EE fraction of Taraxaci Herba was most effective and also hexane fraction was most effective in the combined treatment with anticancer drugs. 4. In cytotoxic effect against PLC every fractions showed the anti tumor effect in the concentrations of $10^{-5}g/ml$ above as compared with the data of control and also the combined treatment with MMC was most effective. 5. Fractions of Taraxaci Herba showed the most antitumor effect against Hep 3B and also the combined treatment with MMC was most effective. From the above result it was concluded that ethyl ether fraction of Taraxaci Herba was most effective fraction, every fraction showed more antitumor effect against Hep 3B and Hep G2 than PLC.

• Asian Pacific Journal of Cancer Prevention
• /
• 제16권5호
• /
• pp.1725-1728
• /
• 2015

Objective: To explore effects of paclitaxel-loaded poly lactic-co-glycolic acid (PLGA) particles on the viability of human hepatocellular carcinoma (HCC) HepG2 cells. Materials and Methods: The viability of HepG2 cells was assessed using MTT under different concentrations of prepared paclitaxel-loaded particles and paclitaxel (6.25, 12.5, 25, 50, and 100 mg/L), and apoptosis was analyzed using Hochest33342/Annexin V-FITC/PI combined with an IN Cell Analyzer 2000. Results: Paxlitaxel-loaded nanoparticles were characterized by narrow particle size distribution (158.6 nm average particle size). The survival rate of HepG2 cells exposed to paclitaxel-loaded PLGA particles decreased with the increase of concentration and time period (P<0.01 or P<0.05), the dose- and time-dependence indicating sustained release (P<0.05). Moreover, apoptosis of HepG2 cells was induced, again with an obvious dose- and time-effect relationship (P<0.05). Conclusions: Paclitaxel-loaded PLGA particles can inhibit the proliferation and induce the apoptosis of HCC HepG2 cells. This new-type of paclitaxel carrier body is easily made and has low cost, good nanoparticle characterization and sustained release. Hence, paclitaxel-loaded PLGA particles deserve to be widely popularized in the clinic.

• 대한의생명과학회지
• /
• 제17권3호
• /
• pp.253-260
• /
• 2011

Chaga mushroom (Inonotus obliquus) extract has been known to have therapeutic effects, such as anti-inflammatory, hepato-protective, anti-oxidant and anti-tumor effect. In this study, we evaluated the effects of Chaga extract on the cytotoxic actions of cisplatin in HepG2 hepatoma cells. The viability of the HepG2 cells was decreased to 10% at 3 ${\mu}M$ cisplatin and to 20% at 500 ${\mu}g$/ml Chaga extract as measured by the MTT assay. The viability of HepG2 cells co-treated with cisplatin (3 ${\mu}M$) and Chaga extract (500 ${\mu}g$/ml) was decreased to 50% in compared with the control cells. The cytotoxicity of two drugs was revealed as apoptosis characterized by the chromatic condensation, nuclear fragmentation and the cleavage of pro caspase-3 in HepG2 cells. Also, the cells treated with combination of two drugs showed synergistically the loss of mitochondrial membrane potential and increase of intracellular ROS levels. Therefore, these results suggest that the combination treatment of cisplatin and Chaga extract induces apoptotic cell death in HepG2 cells and has more potential anti-tumor effect than cisplatin alone.

• Asian Pacific Journal of Cancer Prevention
• /
• 제15권22호
• /
• pp.9853-9857
• /
• 2014

Background: The morbidity and mortality rate of liver cancer continues to rise in China and advanced cases respond poorly to chemotherapy. Ribosomal protein L24 has been reported to be a potential therapeutic target whose depletion or acetylation inhibits polysome assembly and cell growth of cancer. Materials and Methods: Total RNA of cultured amycin-resistant and susceptible HepG2 cells was isolated, and real time quantitative RT-PCR were used to indicate differences between amycin-resistant and susceptible strains of HepG2 cells. Viability assays were used to determine amycin resistance in RPL24 transfected and control vector and null-transfected HepG2 cell lines. Results: The ribosomal protein L24 transcription level was 7.7 times higher in the drug-resistant HepG2 cells as compared to susceptible cells on quantitative RT-PCR analysis. This was associated with enhanced drug resistance as determined by methyl tritiated thymidine (3H-TdR) incorporation. Conclusions: The ribosomal protein L24 gene may have effects on drug resistance mechanisms in hepatocellular carcinoma HepG2 cells.

• 대한한방내과학회지
• /
• 제28권1호
• /
• pp.149-165
• /
• 2007

Objectives : This study was designed to investigate the effects of Artermisiae Capillaris Herba, Curcumae Rhizoma, Loranthi Ramulus, and Orostachys Herba on expression of angiogenic factors in HepG2 cells. Materials and Methods : The mRNA expression level and protein secretion level of angiogenic factors were measured using quantitative RT-PCR, western blot and ELISA assay respectively in Artermisiae Capillaris Herba, Curcumae Rhizoma, Loranthi Ramulus, Orostachys Herba -treated and untreated HepG2 cells. Results : Curcumae Rhizoma, Loranthi Ramulus, and Orostachys Herba reduced mRNA expression level and protein secretion level of angiogenic factors, but Artermisiae Capillaris Herba increased it, especially VEGF and bFGF in HepG2 cells. Conclusions : The results indicate that Artermisiae Capillaris Herbapromotes expression of angiogenic factors but Curcumae Rhizoma, Loranthi Ramulus, and Orostachys Herba inhibit expression of angiogenic factors in HepG2 cells. The result is expected that Curcumae Rhizoma, Loranthi Ramulus, Orostachys Herba have an inhibitive effect of angiogenesis in HCC.