• Mycobiology
• /
• 제36권2호
• /
• pp.106-109
• /
• 2008

The anti-tumor effects of exo- (EX) and endo-biopolymers (EN) produced from submerged mycelial cultures of Ganoderma applanatum (GA), Collybia confluens (CC), and Pleurotus eryngii (PE) were studied using Sarcoma 180 bearing mice. Solid tumor growth was inhibited most effectively when 40 mg/kg body weight (BW) of GA-EX or PE-EN was administered to the intraperitoneal (i.p.) cavity of BALB/c mice. The spleen and liver indexes were increased in mice following i.p. administration of GA-EX and PE-EN fractions. GA-EX and PE-EN reduced the tumor formation by 30.7% and 29.4%, respectively. GA-EX and PE-EN increased the natural killer (NK) cell activity of splenocytes by 41.3% and 28.9%, respectively.

• 한국미생물·생명공학회지
• /
• 제23권5호
• /
• pp.526-530
• /
• 1995

Phospholipase A$_{2}$ (PLA$_{2}$) is lipolytic enzyme that has known to be involved in inflammation. In the course of our screening for antiinflammatory compounds from natural products, a compound having PLA$_{2}$ inhibitory activities was isolated from the methanol extract of Umbilicaria esculenta. The compound was identified as lecanoric acid based on various NMR studies including DEPT, HETERO-COSY and HMBC experiments. Lecanoric acid inhibited human rheumatoid synovial PLA$_{2}$ activity with IC$_{50}$ of 0.17 mM and also exhibited antitumor activity (ED$_{50}$=2.7 $\mu $g/ml) against skin tumor cell line (LOX-IMVI).

• 약학회지
• /
• 제30권4호
• /
• pp.193-197
• /
• 1986

A strongly cytotoxic fraction (Fc-2, ED50=0.0003$\mu\textrm{g}$/ml) against L1210 cell was obtained from the root, seed and fruit of Trichosanthes kirilowii. Administration of Fc-2 prolonged the life span of the BDF1 mice bearing L1210 and the ICR mice bearing S-180 by 135%, and 130%, respectively. The Fc-2 affected L1210 cells were enlarged in their diameters two or three times in comparison with the untreated ones. When 20mg/kg of Fc-2 was administered, intraperitoneally, all the mice were killed.

• 생약학회지
• /
• 제20권2호
• /
• pp.110-116
• /
• 1989

This study was conducted to purify and characterize a polysaccharide fraction from whole parts of Duchesnea indica (Andr.) Focke, which was previously reported to show an antitumor activity by us. The plant was extracted with 5% ethanol for 3 days in the room temperature. The extract was dialyzed by 5% ethanol, and then concentrated by extraction with $excess\;_N-butanol$, followed by gel filtration named Fr. a and b. Each was composed of gallic acid, hexose, pentose, uronic acid and protein, indicating that both fractions were tannic polysaccharide containing protein. Heat treatment of them yielded gallic acid less polysaccharides. They showed a colony stimulating factor activity.

• Archives of Pharmacal Research
• /
• 제8권4호
• /
• pp.253-256
• /
• 1985

The effect of skullcapflavon II, 5, 2'- dihydroxy-6, 7, 8, 6'-tetramethoxyflavone, on the growth of transplantable L 1210 and sarcoma 180 tumors in mice was studied. Intraperitional treatment of skullcapflavon II cased a significant (T/C = 166%) and a moderate (T/C = 122 %) prolongations of the life spans of ICR and $BDF_{1}$ mice respectively, which had been intraperitioneally inoculated with sarcoma 180 and L 1210 cells. Peritumoral injection of skullacapflavon II on the solid form of sarcoma 180 in mice inhibited the tumor growth strongly (Inhibition rate = 71%).

• 약학회지
• /
• 제42권2호
• /
• pp.132-139
• /
• 1998

Currently, cancer is the primary cause of death and 50% of cancer patients are incurable by surgery, radiotherapy and chemotherapy. Therefore, immunotherpy is interested as the fourth remedy. Biological response modifier (BRM), such as organometallic compounds, glycoproteins, polysaccharides and other natural products. Is the one which can enhance the immune response against cancer cell. To develop new BRM from natural sources, we investigated 63 species Korean traditional medicines by observing the mitogenic activity to splenocytes, generation of activated killer cells and activation of macrophages. Finally, we selected 9 species including Angelicae gigantis Radix, Mori Cortex Radicis, Arisaematis Tuber, Salviae Radix, Cnidii Rhizoma, Ligusti Fructus, Pasoraliae Semen, Loranthi Ramulus, Ginseng Radix. Bioassay-guided fractionation and purification is undergoing.

• Natural Product Sciences
• /
• 제8권4호
• /
• pp.170-172
• /
• 2002

In continuous efforts for discovery of novel potent antitumor agents from natural products, fifty-seven methanolic extracts derived from indigenous Korean plants were primarily evaluated for in vitro cytotoxic activity in cultured human lung (A549) and colon (Col2) cancer cells. As a result, 16 plant extracts were found to be active against A549 cells and 15 extracts were active against Col2 cells in the criteria of $IC_{50}$<$50\;{\mu}g/ml$. In particular, the extracts of Calystegia soldanella $(IC_{50}$<$8.0\;{\mu}g/ml\;in\;A549;IC_{50}=27.4\;{\mu}g/ml\;in\;Col2)$, Heloniopsis orientalis $(IC_{50}=4.6\;{\mu}g/ml\;in\;A549; IC_{50}=4.5\;{\mu}g/ml\;in\;Col2)$, and Thuja koraiensis $(IC_{50}=1.2\;{\mu}g/ml\;in\;A549;IC_{50}=0.6\;{\mu}g/ml\;in\;Col2)$ showed a potent cytotoxic activity. Further study for the identification of active compounds from these lead extracts might be warranted.

• 혜화의학회지
• /
• 제4권1호
• /
• pp.211-223
• /
• 1995

연구배경: 간암은 우리나라에서 암의 사망율 중 2위인데 한방임상에서 간암의 치료에 인진, 포공영, 시호등이 자주 사용되고 있는데 이들 한약의 간암세포에 대한 항종양효과와 간암치료에 사용되는 항암제와의 상승작용을 실험적으로 입증할 필요가 있어 실험에 착수하였다. 방법: in vitro에서 시호, 인진, 포공영 및 포공영 EE층의 인체 간암세포인 PLC(hepatoma), Hep 3B(hepatocellular carcinoma) 및 Hep G2(hepatocellular carcinoma) 등에 대한 세포독성과 간암치료에 다용되는 mitomycin C(MMC), cisplatin(CPT), 5-fluorouracil(5-FU) 등의 항암제와의 상승효과를 MTT법에 의해 측정하였다. 결과: 인진은 비교적 PLC와 Hep 3B에 대하여 항종양효과가 있고, 시호는 Hep G2에 대해 보다 효과적이고, 항암제중 MMC와의 상승적 작용이 뚜렷하여 앞으로 인진으로 부터 항암활성물질의 분리가 필요하며 한약과 항암제와의 병용투여 가능성을 제시한다고 사료된다.

• Archives of Pharmacal Research
• /
• 제23권2호
• /
• pp.121-127
• /
• 2000

Cannabigerol (1, CBG), methyl 4-[(2E)-3,7-dimethyl-2,6-octad ienyl)oxy]-3-methoxybenzoate (2, DTM), 5-fluorouracil (3, FU) as a reference, and cannabidiol (4, CBD) were tested for their growth inhibitory effects against KB(ATCC NO, OCL 17) cell lines using two different assays, the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazoliumbromide (MTT) assay and the sulforhod-amine B protein (SRB) assay. These compounds showed inhibitory activity in vitro in the micromolar range against KB cell lines. In general, the antitumor activities of these compounds (1, 2, 3 and 4) were dose-dependent over the micromolar concentration range of 1 to 100 M. The comparison of $IC_{50}$ values of these compounds in tumor cell lines showed that their susceptibility to these compounds decreases in the following order: DTM > CBD > 5-FU > CBG by MTT assay and DTM = CBD > 5-FU > CBG by SRB assay. CBG 1, DTM 2, 5-FU 3, and CBD 4 were tested for their cytotoxic effects on NIH 3T3 fibroblasts using two different assays, the MTT assay and SRB assay. These compounds exhibited potent cytotoxic activities in vitro in the micromolar range against NIH 3T3 fibroblasts. In general, the cytotoxic acivities of these compounds (1, 2, 3 and 4) were dose-dependent over the micromolar concentraion range of 1 to 100 M. The comparison of $CD_{50}$ values of these compounds in NIH 3T3 fibroblasts shows that their susceptibility to these compounds in decreases the following order(:) CBD > 5-FU > DTM > CBG by MTT assay, CBD > 5-FU > CBG > DTM by SRB assay. These results suggest that DTM 2 has the most growth-inhibitory activity against KB cell lines.

• 대한본초학회지
• /
• 제33권4호
• /
• pp.95-100
• /
• 2018

Objectives : Ligustri Fructus has been used since ancient times as a medicinal usages in folk medicines against antitumor purpose. Many biological active constituents have been identified from this biomass such as several terpenoids and lignans. In current study, the properties of antioxidant and anti-diabetic complications using 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid)($ABTS^+$) radicals scavenging, and advanced glycation end products (AGEs) inhibition assays were evaluated by different extraction methods of Ligustri Fructus. Methods : In present continuing research for development of bioactive natural ingredients, antioxidant and AGEs formation inhibitory capacities of Ligustri Fructus extracts using different organic solvents were prepared and the biological potentials were investigated using in vitro bioassays. Antioxidant properties were evaluated employing radical scavenging assays using DPPH and $ABTS^+$ radicals. In addition, the anti-diabetic complications effects of Ligustri Fructus extracts were tested via AGEs formation inhibitory assay. The total phenolic contents were determined using a spectrophotometric method. Results : All the tested extracts exhibited dose-dependent radical scavenging and AGEs formation inhibitory activities. Among the tested samples, hot water extract of Ligustri Fructus was showed the most potent activity with $IC_{50}$ value of $494.8{\pm}6.7{\mu}g/m{\ell}$ against DPPH radical scavenging assay. Also, $ABTS^+$ radical scavenging activity of hot water extract was higher than those of other extracts. In addition, AGEs formation inhibitory effects of each extacts and total phenolic contents were evaluated. Conclusions : These results suggested that Ligustri Fructus can be considered as a new effective source of natural antioxidant and anti-diabetic complications resources.