• Journal of Physiology & Pathology in Korean Medicine
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• v.20 no.3
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• pp.701-709
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• 2006

The Rhus verniciflua Stokes (乾漆-RVS) has been used in traditional East Asia medicine for the therapy of gastritis, stomach cancer, although the mechanism for the biological activity is unclear. In the present study aims to investigate RVS extract contributes to growth inhibitory effect and it's the molecular mechanism on the human gastric cancer cells. AGS (gastric cancer cells) and RIEI (normal cells) were treated to different concentrations and periods of RVS extract $(10{\;}{\sim{{\;}100{\;}ug/mil)$. Growth inhibitory effect was analyzed by measuring FACS study and MTS assay. Cell cycle inhibition was confirmed by measuring CDK2 kinase activity by immunoprecipitation and kinase assay. And apoptosis was confirmed by surveying caspase cascades activation using a pan caspase inhibitor Exposure to RVS extract (50 ug/mll) resulted in a synergistic inhibitory effect on cell growth in AGS cells. Growth inhibition was related with the inhibition of proliferation and induction of apoptosis. The extract induces Gl -cell cycle arrest through the regulation of cyclins, the induction of p27kip1, and the decrease CDK2 kinase activity. And upregulated p27kip1 level is caused by protein stability increment by the reduction of S-phase kinase-associated protein 2 (Skp2), a key molecule related with p27kip1 ubiquitination and degradation, and do novo protein synthesis. Besides, 乾漆 extract induces apoptosis through the expression of Bax, poly(ADP-ribose) polymerase (PARP) and activation of caspase-3. RVS extract induces Gl -cell cycle arrest via accumulation of p27kip1 and apoptosis in human gastric cancer cells but not in normal cells, therefore we suggest that the extract can be used as a novel class of anti-cancer drugs.

• Nutrition Research and Practice
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• v.4 no.3
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• pp.177-182
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• 2010

The Chaga mushroom (Inonotus obliquus) has been used in folk medicine to treat cancers. However, limited information exists on the underlying anticancer effects of the major component of I. obliquus in vivo. We hypothesize that the pure compounds ($3{\beta}$-hydroxy-lanosta-8,24-dien-21-al, inotodiol and lanosterol, respectively) separated from I. obliquus would inhibit tumor growth in Balbc/c mice bearing Sarcoma-180 cells (S-180) in vivo and growth of human carcinoma cells in vitro. To test this hypothesis, the growth inhibition of each subfraction isolated from I. obliquus on human carcinoma cell lines (lung carcinoma A-549 cells, stomach adenocarcinoma AGS cells, breast adenocarcinoma MCF-7 cells, and cervical adenocarcinoma HeLa cells) was tested in vitro. Then, after S-180 implantation, the mice were fed a normal chow supplemented with 0, 0.1 or 0.2 mg of subfraction 1, 2 or 3 per mouse per day. All of the subfractions isolated from I. obliquus showed significant cytotoxic activity against the selected cancer cell lines in vitro. Subfraction 1 was more active than subfraction 2 and subfraction 3 against the A549, AGS and MCF-7 cancer cell lines in vitro. In in vivo results, subfraction 1 isolated from I. obliquus at concentrations of 0.1 and 0.2 mg/mouse per day significantly decreased tumor volume by 23.96% and 33.71%, respectively, as compared with the control. Subfractions 2 and 3 also significantly inhibited tumor growth in mice bearing S-180 as compared with the control mouse tumor. Subfraction 1 isolated from I. obliquus showed greater inhibition of tumor growth than subfractions 2 and 3, which agrees well with the in vitro results. The results suggest that I. obliquus and its compounds in these subfractions isolated from I. obliquus could be used as natural anticancer ingredients in the food and/or pharmaceutical industry.

• THE JOURNAL OF KOREAN ORIENTAL ONCOLOGY
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• v.9 no.1
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• pp.15-37
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• 2003

Objective: We are aimed to identify anti-tumor effects of Curcuma longa L. on the stomach cancer cells through molecular biologic methods. Material & Methods: We used AGS as human stomach cancer cells obtained from American Type Culture Collection. The boiled extract of Curcuma longa L. $5{\mu}l$ (Sample I), $10{\mu}l$ (Sample II) was treated to cultural media(ml) for 0, 6, 12, 24, 48 hours. We measured the killing effect on stomach cancer cells through Trypan blue exclusion test and the suppressive effect on viability of stomach cancer cells via MTT assay. For identification of its anticancer mechanism, the revelation of Bcl-2, Bcl-XL, and Bax which are genes related to apoptosis using the quantitative RT-PCR, change of mitochondria membrane permeability and membrane potential via flow cytometry, the cycle of cell mitosis, caspase cleavage and annexin V staining were examined. Results: 1. showed significant killing effect on stomach cancer cell than the control group with a time(6 hours later) and density dependent manner, which was statistical significance. 2. Extract of Curcuma longa L. showed suppressive effect on viability of stomach cancer cells that each test groups had more suppressive effects on viability of stomach cancer cells than the control group with a time(6 hours later), which was statistical significance.(p<0.05) 3. In the test about the revelation of genes related to apoptosis, the revelation of Bcl-2 and Bcl-XL decreased with a density manner which was statistical significance. but the revelation of Bax was not changed with statistical significance. 4. Extract of Curcuma longa L. caused apoptosis by decreasing the absorbance of mitochondria with statistical significance, and also induced apoptosis by decreasing the membrane potential of mitochondria. 5. Extract of Curcuma longa L. destructed the cell cycle of cell mitosos. 6. Cell apoptosis was induced by extract of Curcuma longa L. certificated by method of caspase cleavage and annexin V staining. Conclusion: This experiment showed that Curcuma longa L. has anti-tumor effect with statistical significance. This is in vitro experiment and basic experiment on Curcuma longa L.. We hope more progressive research on Curcuma longa L. will go on and its anti-tumor effects will be more practically identified.

• Toxicological Research
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• v.21 no.2
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• pp.107-113
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• 2005

[ $BARODON^{(R)}$ ] is a multi-purpose, high functional alkali solution made by mixing and liquid-ionizing silicon, calcium, sodium, borax, organic carbon chemicals and silver. In this study, we have investigated the apoptotic potential and mechanistic insights of $BARODON^{(R)}$ in human gastric cancer cell line (AGS cells). In MTT assay, $BARODON^{(R)}$ reduced cell viability in AGS cells. Morphological features of apoptosis with marked cytoplasmic vacuolation and appearance of apoptotic peaks in flow cytometry were observed in AGS cells with$BARODON^{(R)}$ treatment. In addition, $BARODON^{(R)}$ induced apoptosis of stomach cancer cell is related to bax up-regulation, caspase 7 protease activation and subsequent cleavage of poly (ADP-ribose) polymerase (PARP). These results suggest that BARODON can induce the apoptosis of AGS cells through modulation of bcl-2 family and the activation of intrinsic caspase cascades, indicating that it is potentially useful as a anti-cancer agent.

• Asian Pacific Journal of Cancer Prevention
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• v.17 no.10
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• pp.4631-4635
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• 2016

Background: The plant Ecballium elaterium (L.) A. Rich, belongs to the Cucurbitaceae family which occupies an important position in traditional medicine prescriptions. It has been reported that a freeze-dried aqueous extract of E. elaterium fruits has cytotoxic effects on the AGS human stomach adenocarcinoma cell line. We here focused on anticancer effects of the main chemicals purified from E. elaterium fruits. Materials and Methods: We isolated cucurbitacins D, E, and I from chloroform, and ethyl acetate fractions of a methanolic extract of E. elaterium fruits and assessed their cytotoxic effects on the AGS cell line by MTT assay. The methanolic extract was fractionated to petroleum ether, chloroform, and ethyl acetate fractions. The compounds isolated by column chromatography were identified by NMR spectroscopy. Results: After 24 h of incubation with AGS cells, the IC50 values were 0.3, 0.1, and $0.5{\mu}g/ml$ for cucurbitacins D, E, and I respectively. Conclusions: This finding suggests that because of its cucurbitacins, E. elaterium fruit may have some cytotoxic effects on gastric cancer cells. Also, compared with D and I, cucurbitacin E showed greater potency in this regard.

• Journal of the Korean Society of Food Science and Nutrition
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• v.43 no.5
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• pp.682-689
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• 2014

This study was carried out to discriminate the effects of the ramie leaf according to the drying methods (hot air drying and freeze drying) on antioxidative activity in vitro and antiproliferation in human cancer cells. There were no significant differences in total polyphenol content of ramie leaf ethanol extracts depending on the drying methods, but total flavonoid content was significantly higher in hot air dried ramie leaf (HR) than in freeze dried ramie leaf (FR). The DPPH radical scavenging activity of HR and FR ethanol extracts were found to be 77.74%, and 77.29% in 1000 ppm, respectively. Antioxidative index of HR and FR ethanol extracts measured by Rancimat were lower than those in BHT, BHA, and ascorbic acid, but were higher than that in control. The antiproliferation effect of 80% ethanol extracts of HR and FR on liver cancer cell line (H460), stomach cancer cell line (AGS), and lung cancer cell line (A549) were increased with a dose-dependent manner. The cancer cell growth inhibition activities of HR and FR ethanol extracts at the concentration of $800{\mu}g/mL$ showed greater than 80% on Hep G2 and A549 cell line, and greater than 75% on AGS cell line. These results suggest that HR and FR ethanol extracts possess potential antioxidative effect and antiproliferation in human cancer cells, and those activities of ramie leaf ethanol extracts depending on the drying methods were similar.

• THE JOURNAL OF KOREAN ORIENTAL ONCOLOGY
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• v.5 no.1
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• pp.47-60
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• 1999

Traditional oriental medicines have been used for treatment of various kinds of human cancers for long times and some of them proven to be effective clinically. However, the pharmacological actions and mechanisms related to cancer treatment are generally unknown. In an effort to clarify the action mechanisms of several oriental medicines used for cancer treatments, we planned this experimental procedures. We selected Cordyceps sinensis (冬蟲下草), Punellae Herba (夏枯草), Rehmanniae Radix (熟地黃), Paeoniae Radix (白芍藥), Oldenlandiae Herba (白花蛇舌草), Partulaceae Herba (馬齒? ), Scdopendra subspinipes mutilans (蜈蚣), Mylabris Phalerara (班蟄), Phellinus igniarius(桑黃), Ganodermae Lignum(靈芝) for evaluation, which have been used for patients of gastric cancers. The twenty grams of medicines were boiled in 100ml of water for 1 hour and filtered with $0.2\;{\mu}m$ pore-sized filter unit to remove insoluble particles. Initially we evaluated the effects oriental medicines on growth inhibition in stomach cancer cells. The gastric cancer cell line, AGS, was cultured in RPMI 1640 supplemented with l0% heat-inactivated fetal bovine serum and treated with $10{\mu}l$ oriental medicines per 1ml of medium up to 48 hours. The specimens were subjected to MTT assay for evaluation of growth inhibition. We found mat Mylabris phalerata (班蟄) markedly suppressed the growth of cancer cells as shown in results. Next, we checked the effects of oriental medicines on cancer on cell cycles and apptosis. Mylabrls phalerata (班蟄) inhibited cell cycle progression of cancer cells a compared with control cells and cells treated with other medicines. In addition, Mylabri phalerata (班蟄) induced apoptosis in 30-40% of stomch cancer cells within 24 hours. Other oriental medicines used for this experiments did not show apoptosis-inducing effects on cancer cells. Finally, we determined the expression levels of genes associated with cell cycle and apoptosis. The expressions of Bcl-2 and bcl-XL were downregulated by the treatment of Mylabris phalerata (班蟄). However, the expression levels of genes related to cell cycles were not altered significantly. In conclusion, we found that Mylabris phalerata (班蟄) has in vivo gowth-inhibiting and apptosis-inducing effects on stomach cancer cells. However, we think that at least animal experiments are necessay for evduations.

• The Journal of Internal Korean Medicine
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• v.30 no.2
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• pp.399-409
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• 2009

Objectives : The aim of this study was to experiment the antitumor activity of Agrimonia pilosa Ledebour (APL) in human stomach cancer (AGS) cell lines (in vitro) and male C57BL/6J mouse (in vivo). Methods : The effects of the ethanol extract from the plant on several transplantable rodent tumors were investigated in vitro by 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxy phenyl)-2-(4-sulfophenyl)-2H-tetrazolium, inner salt (MTS) assay. DNA content analysis and Western blot analysis. Agrimonia pilosa Ledebour (APL) was given to rats with Lewis Lung Carcinoma (LLC) cells. The experimental rats were divided into 3 groups in vivo. Saline was injected into the abdominal cavity in the first group, 50 mg/kg APL was injected into the abdominal cavity in the second group and 100 mg/kg was injected into the abdominal cavity in the third group. After that, we checked their tumor volume periodically. Results : At first, human gastric cancer (AGS) cell lines (in vitro) showed decreased cell viability, and increased $sub-G_1$ contents. When we experimented rat intestinal epithelial (RIE)l as same condition, this result didn't show. With this, compared to normal cells, Agrimonia pilosa Ledebour (APL) led selectively to the extinction of cells only in human gastric cancer. Moreover, we showed that the traditional herbal medicine APL induced caspase-dependent apoptosis in AGS cells. Next, APL inhibited the growth of LLC-bearing mouse tumor. However, we could not verify APL induced caspase-dependent apoptosis in LLC-bearing mouse tumor. Conclusions : The roots of Agrimonia pilosa Ledebour (APL) contain some antitumor constituents.

• The Korean Journal of Food And Nutrition
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• v.25 no.2
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• pp.259-265
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• 2012

In this study, we determined total polyphenol content(TPC) and total flavonoid content(TFC) of extracts from Korean cabbage and cabbage using a spectrophotometric method as well as glucosinolates concentration by HPLC. TPCs of Korean cabbage and cabbage extracts were 308.48 ${\mu}g$ GAE/g dry weight and 344.75 ${\mu}g$ GAE/g dry weight, respectively. TFCs of Korean cabbage and cabbage extracts were 5.33 ${\mu}g$ QE/g dry weight and 5.95 ${\mu}g$ QE/g dry weight, respectively. We found six different glucosinolates, namely progoitrin, glucoalyssin, gluconapin, glucobrassicanapin, glucobrassicin and 4-methoxyglucobrassicin in the Korean cabbage extract. In the cabbage extract, there was four glucosinolates, namely glucoraphanin, sinigrin, glucobrassicin and 4-methoxyglucobrassicin. We determined the cytotoxic effect of Korean cabbage and cabbage extracts in AGS human stomach cancer cells, HepG2 human hepatic cancer cells and LNCaP human prostate cancer cells by MTT assay. Dose-dependent relationships were found between the extract concentrations and cancer cell growth inhibition. The overall results support that both Korean cabbage and cabbage, the major vegetables in Korea, contain bioactive compounds such as polypheol, flavonoids as well as glucosinolates and they may play a positive role in cancer prevention.

• Food Science and Preservation
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• v.20 no.5
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• pp.691-698
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• 2013

The biological activities of Smilax china L. rhizome (SCR), hot water (SCRW) and 70% ethanol extract (SCRE) were analyzed. The total phenolic contents of SCRW and SCRE were 51.7 and 100.5 mg/g, respectively. The measured flavonoid content of SCRW ($67.7{\mu}g/g$) was almost double that of SCRE ($31.7{\mu}g/g$). SCRE ($IC_{50}=42.4{\mu}g/mL$) exhibited stronger antioxidant activity in the DPPH system than the positive control ${\alpha}$-tocopherol ($71.3{\mu}g/mL$) or butylated hydroxy anisole ($53.8{\mu}g/mL$) did. SCRE ($IC_{50}=50.3{\mu}g/mL$) also showed stronger ABTS radical scavenging activity, as did ${\alpha}$-tocopherol ($67.1{\mu}g/mL$). The SOD-like activity and Tyrosinase inhibition activity of SCRW and SCRE showed almost the same pattern. The best SOD-like activity and tyrosinase inhibition activity were measured as 24.9% and 20.3% in SCRW at $1,000{\mu}g/mL$, respectively. The cytotoxic effects of the SCR extracts were analyzed via MTT assay on human cancer and normal cells. SCRW and SCRE did not show cytotoxicity up to the concentration of $1,000{\mu}g/mL$ against the normal human cell line HEK293. Against human breast cancer cells (MCF-7), SCRW inhibited MCF-7 growth (by 27.6%) better than the anticancer drug cyclophosphamide (15.5%) at $1,000{\mu}g/mL$. SCRE ($1,000{\mu}g/mL$) inhibited the growth of human lung cancer cells A549 (37.6%) and human stomach cancer cells AGS (53.6%) more effective than did SCRW (21.0% and 35.4%) or CPA (22.2% and 31.7%). These results suggest the potential use of SCRE and SCRW as an excellent antioxidant and antiproliferative substance, respectively.