• Journal of Korean Society of Forest Science
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• v.87 no.2
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• pp.260-269
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• 1998

This study was conducted to screen the biological activity of urushiol in the sap of lac tree(Rhus verniciflua STOKES) which has been used in traditional folk remedies. Cytotoxic activity of urushiol was screened with L1210(mouse luekemia cell), PC-9(human lung adenocarcinoma cell), A427(human lung adenocarcinoma cell) and KATO III (human stomach adenocarcinoma cell) The stepwise hexane : acetone eluent fractions of the urushiol were obtained by the silica gel adsorption column chromatography and added to the culture media containing L1210, PC-9. A427, and KATO III, respectively. A hexane : acetone(90 : 10, v/v) eluent fraction of them showed the lowest 50% inhibition concentration($IC_{50}$) of $0.018{\mu}g/m{\ell}$ for the cell line of A427. Much lower level of $IC_{50}$ of the hexane : acetone(90 : 10, v/v) eluent fraction of the urushiol showed the equal inhibition effect with tetraplatin(i.e., anti-cancer drug of platinum complexes) on the cancer cell lines as follows ; 3.4 times lower for L1210, 3.9 times lower for PC-9, and 105.5 times lower for A427. However, $IC_{50}$ of the hexane : acetone(90 : 10 v/v) eluent fraction for KATO III was exceptionally 3.9 times higher than that of tetraplatin.

• Korean Journal of Food Science and Technology
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• v.44 no.3
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• pp.317-323
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• 2012

This study was performed to elucidate the anticancer activities and the mechanism of chloroform fractions from cultivated Orostachys japonicus (CFCOJ) in human colon cancer cells. CFCOJ markedly decreased viable cell numbers in both a dose-dependent and time-dependent manner within SW480 cells. Cell death induced by CFCOJ increased cell populations in the sub-G1 phase, as well as the formation of apoptotic bodies, nuclear condensation, and induced DNA fragmentation. CFCOJ-induced apoptosis was associated with the activation of initiator caspase-8 and -9, as well as the effector caspase-3. CFCOJ also stimulated Bid cleavage, indicating that the apoptotic action of caspase-8-mediated Bid cleavage leads to the activation of caspase-9. CFCOJ increased the expression of the proapoptotic protein, Bax, and decreased the expression of the antiapoptotic protein, Bcl-2. These results indicate that CFCOJ exert anticancer effects on human colon cancer SW480 cells through a caspase-dependent apoptotic pathway.

• Journal of the Korean Society of Food Science and Nutrition
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• v.39 no.1
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• pp.36-41
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• 2010

This study was conducted to investigate the effects of fermented ginseng extract by mushroom mycelia on antiproliferation of cancer cells. Phellinus linteus, Ganoderma lucidum, and Hericium erinaceum mycelia were inoculated to ginseng. The effects of fermented ginseng extract on antiproliferation of stomach (MKN-45), colon (HCT116), mammary (MCF-7), lung (NCIH460), prostate (PC-3), and liver (HepG2) cancer cells were investigated by MTT assay. Fermented ginseng extract showed significant antiproliferation effects compared with fresh ginseng extract. Fermented ginseng extract by P. linteus, G. lucidum, and H. erinaceum mycelia showed growth-inhibitory effect of 44.50, 17.75 and 43.98% viability at 1.5 mg/mL on the MKN-45 cell line, 62.86, 3.73, and 54.55% at 1.5 mg/mL on the HCT116 cell line, 41.81, 7.01, and 37.84% at 1.5 mg/mL on the MCF-7 cell line, 53.52, 5.31, and 35.27% at 1.5 mg/mL on the NCIH460 cell line, 35.05, 3.07, and 44.29% at 1.5 mg/mL on the PC-3 cell line, and 59.57, 6.34, and 4.97% at 1.5 mg/mL on the HepG2 cell line, respectively. These results indicated that fermented ginseng by G. lucidum mycelium showed the highest antiproliferation effect against various cancer cells.

• Korean Journal of Food Science and Technology
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• v.38 no.2
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• pp.262-267
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• 2006

Inhibitory effects of fungal metabolites isolated from foodstuffs on growth of human cancer cell lines were evaluated. Isolated strains were divided into four classes based on color (aerial, reverse), shape, and growth speed. Fungal metabolites extracted with ethyl acetate were investigated for their growth inhibition on six kinds of human cancer cells by MTT assay. Ethyl acetate extract showed high growth inhibition against all cancer cells tested, with D4 exhibiting the strongest growth inhibition effects against Kato III, AGS, Hepa1c1c7, and MDA-MB-231 cancer cells. These results suggest ethyl acetate extract from fungal metabolites as effective natural cancer therapeutic material.

• Journal of the Korean Society of Food Science and Nutrition
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• v.39 no.3
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• pp.325-330
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• 2010

This study was conducted to investigate the effects of 70% ethanol extracts of various germinated-rough rice cultivars: ('Ilpum', 'Goami2', 'Keunnun', 'Sulgaeng', 'Baegjinju', and 'Heugkwang') on proliferation of human cancer cell lines (MKN-45, HCT116 and NCI-H460). Antiproliferation effects of rough rice on different cancer cell lines were higher in after germination than before germination. The viability of HCT-116 colon cancer cells was lowest at 18.89% in after germination of 'Heugkwang' at 1.0 mg/mL. The cell viability of MKN-45 lung cancer cells and MKN-45 stomach cancer cells were in the range of 5~10% in after germination of 'Ilpum', 'Goami2', 'Baegjinju', and 'Sulgaeng', and 'Heugkwang' at 1.0 mg/mL. These results suggest that germinated rough rice might have a potential preventive effect on human cancer cells.

• Journal of the Korean Society of Food Science and Nutrition
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• v.44 no.4
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• pp.635-640
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• 2015

Various medicinal plants were collected, air-dried, and subjected to extraction with ethanol. Ethanol extracts were screened for their efficacies as antioxidative and antiproliferative agents against cancer cells. Among the 15 species, extract of Lindera glauca Blume stem with a total polyphenolic content of $70.99{\pm}1.88{\mu}g/TAE\;{\mu}g$, was found to possess high DPPH radical scavenging ($IC_{50}=30.54{\pm}0.62{\mu}g/mL$), nitrite scavenging ($IC_{50}=787.94{\pm}89.28{\mu}g/mL$), and reducing power activities ($595.76{\pm}1.90{\mu}g/mL$). The antiproliferative activities of plant extracts were determined using MTT assay in human colorectal cancer cells. Extracts of stems and roots from L. glauca Blume were found to possess high anti-proliferative activities in HT-29 and HCT116 cells ($IC_{50}=711.52{\pm}40.27{\mu}g/mL$ and $IC_{50}=85.07{\pm}4.06{\mu}g/mL$, respectively). These results suggest that L. glauca Blume extract could be a useful natural antioxidant and anticancer resource.

• Journal of Life Science
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• v.15 no.5
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• pp.685-691
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• 2005

Growth and DNA synthesis inhibitory effects of doenjang methanol extract and its solvent fractions on AGS human gastric adenocarcinoma cells, Hep 3B human hepatocellular carcinoma cells, HT-29 human colon cancer cells and MG-63 human osteosarcoma cells were studied. The treatment of doenjang methanol extract ($ 200{\mu}g/ml $) with the AGS, Hep 3B, HT-29 and MG-63 cancer cells after 6 days of incubation inhibited the growth of cancer cells by $32\%$, $51\%$, $84\%$ and $33\%$, respectively. To separate active compounds of doenjang, doenjang methanol extract was fractionated with dichloromethane, ethylacetate, and buthanol. Among the solvent fractions, the dichloromethane and ethylacetate fractions showed the highest growth inhibitory effects on various cancer cells. For example, the dichloromethane and ethylacetate fractions ($200a{\mu}g/ml$) sig-nificantly inhibited the growth of various cancer cells by $89\∼96\%$ and$62\∼86\%$, respectively. DNA synthesis of AGS and Hep 3B cancer cells was significantly inhibited by adding dichloromethane fraction ($200{\mu}g/ml$) up to $94\%$ and $80\%$, respectively. Similarly, the ethylacetate fraction ($ 200\mug/ml $) showed a $ 95\% $ inhibition rate of DNA synthesis in AGS cells. These results suggest that the dichloromethane and ethylacetate fractions have specific active compounds, which will explain this anticancer effect of doenjang.

• Journal of the Korean Society of Food Science and Nutrition
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• v.39 no.7
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• pp.960-965
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• 2010

To develop Corni Fructus as a cancer preventive food material, the in vitro cytotoxicities and in vivo antitumor activities of various concentrations of 80% Corni Fructus ethanol extract (CFEE) were investigated using sarcoma-180 cancer cell. Viability was decreased and cell death rate was increased in both dose- and time-dependent manners in cells treated with CFEE at 10, 100, 300, and $500\;{\mu}g/mL$ concentrations for 24, 48, and 72 hr. Proliferation was also inhibited more than 60% in cells treated with CFEE at the $100\;{\mu}g/mL$ concentration for 48 hr. In addition, the morphology of cells treated with CFEE at the 100 and $500\;{\mu}g/mL$ concentrations was distorted with shrunken cell masses and lower cell numbers compared to the control cells. In the cells treated with CFEE, the formation of apoptotic bodies and nuclear condensation were observed in dose dependent manners. CFEE also increased DNA fragmentation values at the 100 and $500\;{\mu}g/mL$ concentrations. The apoptosis induced by CFEE was connected to the proteolytic activation of caspase-3. When CFEE was administered at 100 and 300 mg/kg, ip, for 7 consecutive days in mice inoculated with sarcoma-180 cancer cell, the life span of the mice was found to be longer than that of the control mice that did not receive the extract. These results suggest that Corni Fructus may be used as a potential cancer preventive food material.

• Journal of Life Science
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• v.27 no.12
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• pp.1507-1514
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• 2017

The purpose of this study aimed at examining the antiproliferative effect of kimchi (kimchi B) adding mistletoe extract known as an anticancer function to improve the functions of kimchi. The study investigated the antiproliferative effect through hemocytometer counts and MTT assay, apoptosis induction through DAPI staining, and mRNA expression through RT-PCR using human lung carcinoma A549 cells. The standardized kimchi (Kimchi A) was used as a control group. As a result of hemocytometer counts and the MTT assay, it was found that kimchi samples inhibited the growth of A549 cells in a concentration-dependent manner. Kimchi B induced apoptosis in A549 cells through DAPI staining. The apoptosis induced by kimchi B was associated with the increase in the expression of pro-apoptotic Bax and with the decrease in the expression of anti-apoptotic Bcl-2 and Bcl-xL. Also, kimchi B influenced the increase in the expression of p21 mRNA, but did not have the effect on the expression of p53 mRNA. In conclusion, the antiproliferative effect of kimchi B was due to apoptosis induced by increasing Bax and decreasing Bcl-2, and increasing p21. The findings will be utilized to develop kimchi with the improved function for the patients having cancer.

• Korean Journal of Food Science and Technology
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• v.27 no.4
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• pp.445-448
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• 1995

This study was performed to observe cytotoxic effect of Acetobacter aceti OLS-001 extract against cancer cell lines, including mouse leukemic lymphocyte(P388, L1210) and human rectal(HRT-18) cell. The anticancer substance were prepared by ethanol precipitation of the glass bead extraction combined with hot water of Acetobacter aceti OLS-001. The growth rates of the cancer cells in medium containing Acetobacter aceti extract were inhibited gradually to a significant degree in proportion to the increase of the extract concentration. Morphology of HRT-18 cells in medium containing Acetobacter aceti extract were seen to be shrinked and fragmented.