• 약학회지
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• 제45권6호
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• pp.617-622
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• 2001

A protein-polysaccharide fraction of a Korean wild mushroom Psathyrella velutina, PVP, was prepared and its antitumor immunomodulatory activity was investigated. When PVP was administered once daily for seven days from day 1 to day 7 into male ICR mice implanted with 1 $\times$ 10$^{5}$ cells of sarcom 180 tumor cells into the peritoneum on day 4, it inhibited the growth of sarcoma 180 cells by 92.8%. In XTT assay, PVP also exhorted in vitro anti-proliferation activity on U-937, a human monoblastoid cell line, as well as sarcoma 180 cells. PVP showed marked stimulatory activity on the immune system in that it induced the accumulation of PEC (the stimulation index, Sl=4.90 at 100 mg/kg), stimulated the BALB/c mouse splenic lymphocytes to form lymphoblasts (Sl=5.75 at 100$\mu\textrm{g}$/ml), and upergulated the expression of CD25 molecules. All these results strongly support that PVP exhorts its antitumor activity through stimulation of the immune system as well as anti-proliferative activity on the tumor cells.

• 대한화학회지
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• 제27권4호
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• pp.239-243
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• 1983

퓨린 港代謝物에는 沆癌活性인 것과 非活性인 것이 있는데, 이들을 EHT 方法으로 계산하여 면밀히 검토해 본 결과, 沆癌活性인 것은 DNA 염기의 당이 결합한 위치에 대응되는 위치인 N(9)에서 electron donating ability를 나타내지만, 非活性인 것은 이와 반대임을 알았고 N(9)와 당에 해당되는 위치 (10)간의 overlap population이 가장 작게 나타났다. 이것은 nuclotide level로 전환되어 沆癌活性을 나타낸다는 실험사실과 일치한다.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 1999년도 The 6th International Symposium on the Development of Anti-Cancer Resource from Plants
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• pp.84-89
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• 1999

The present study has been undertaken to detect edible medicinal plants with antineoplastic property on the basic of a number of traditional Korean medical literatures, besides studies on development of anti-cancer medical wild plants growing in Korea and to prove experimentally their efficacy by in vitro and in vivo tests.235 species from 45 family 79 genus were screened primarily as edible sources of antitumor effect. Among those the crude. extracts of 40 spp. showed considerable cytotoxicity in vitro and especially Pegangkuen(Patrinia scabiosaefolia), Deod-eog(Codonopsis lanceolata), Okssusu(Zea may), and Geureong(Eragrositis ferru-ginea) exhibited significant antitumor activity against sarcoma 180 asites mice. However, additional researches should be mode for the confirmation of their availability as antitumor plants.

• 한국균학회지
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• 제10권4호
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• pp.213-216
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• 1982

To find antitumor components with low toxicity in natural products of Korean Basidiomycete, the carpophores of Flammulina velutipes (Fr.) Sing. were extracted with hot water for eight hours. The extract was purified by dialyzing through Visking tube and a protein-bound polysaccharide fraction was obtained as pale brownish amorphous powder after it was freeze-dried. The fraction was examined for antitumor activity against sarcoma 180 implanted subcutaneously in the left groins of I.C.R. mice. The inhibition ratio of this fraction of against the tumor was 62.3% at the dose of 10 mg/kg/day for the period of ten days. The tumors in three of the ten treated mice were completely regressed.

• 약학회지
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• 제42권5호
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• pp.480-486
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• 1998

Many antitumor and immune modulating components have been isolated from fungal extracts. In this study, the authors isolated the proteoglycans from cultured mycelia of Lentin us lepideus, including especially the acidic polysaccharide fraction, named lepidan. It was obtained by extraction with hot water followed by purification using DEAE cellulose anion exchange. To elucidate antitumor effects against different type of tumor, the proteoglycans were tested on sarcoma 180, C3H MCA clone 16 and P388 leukemia in vivo. Lepidan showed 58.3% of tumor inhibition against solid form of sarcoma 180 and 58.6% against MCA clone 16. But lepidan did not affect life span of mice against P388 leukemia. Also when Lepidan was applicated to MTT assay, it did not show any direct cytotoxicity against various tumor cells in vitro.

• Archives of Pharmacal Research
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• 제17권3호
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• pp.194-198
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• 1994

The antitumor effects of the 2E4 and anti--Tac, monoclonal antibodies directed to Il-2 receptor (IL-2R) conjugated with .alpha.-particle emitting radionuclide bismuth-212., were compared. The $^{212}Bi-2E4$ demonstratedspecific cytotocicity to EL4J3, 4, a I$L-2R^+$ cell line, than to EL4J, a $IL-2R^-$ cell line in thymidine incorporation assy. TEX>$^{212}Bi-2E4$ exerted the maximal antitumor effect in that % T/C in C57BL/6 mice implanted with EL4J3.4 ascitic tumor was 331% at the concentration of $50{\;}{\mu}Ci$, while that of $^{212}Bi-anti-Tac$ was 258% at $100{\;}{\mu}Ci$.

• Archives of Pharmacal Research
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• 제20권3호
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• pp.264-268
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• 1997

In order to study the structure-activity relationship of 7, 8-dimethoxy-2-methyl-3-(4, 5-methylenedioxy-2-vinylphenyl)isoquinoline-1(2H) -one (2), which has exhibited significant antitumor activity, chemical modifications of 2 were performed to yield the corresponding products (3-7). Further systematic uses of an efficient procedure for the synthesis of 3-arylisoquinoline derivatives produced the substituted compounds (9a-9g), which were tested for in vitro antitumor activity against five different human cancer cell lines.

• Archives of Pharmacal Research
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• 제4권2호
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• pp.117-122
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• 1981

The carpophores of a mushroom, Naematoloma fasciculare (Fr.) Karst, were extracted with 0.2 N NaOH and the extract was dialyzed through visking tube. It was found to contain an antitumor activity against sarcoma 180 implanted in mice. The components of this aqueous extract were found to be a polysaccharide and a protein by color reactions including Anthrone and Lowery-Folin tests. The hydrolysis of the polysaccharide with 3% HCL-Me-OH and trimethylsily lation of the hydrolysate yielded five monosaccharides, i. e. glucose, frutose, mannose, galactose and xylose, which were detected and analyzed by GLC. After hydrolysis of the protein with 6N HCl, 15 amino acids, including aspartic acid and glutamic acid, were detected and analyzed by an auto amino acid analyzer.

• Biomolecules & Therapeutics
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• 제8권3호
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• pp.235-240
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• 2000

Antitumor effect of LC43, a protein-bound ploysaccharide (M.W. 43 kDa) that was purified from intergeneric protoplast fusant of Lentinus edodes and Coriolus versicolor, was elucidated against mouse sarcoma 180 cell in vitro and in vivo. By injecting LC43 into ICR mice bearing solid or ascitic sarcoma 180, tumor regression and survival rates were investigated. To examine the effects of LC43 on immunopotentiation activity. immunoorgan weight, B cell differentiation, T cell activity and macrophage activation were determined. LC43 showed antitumor effects against both solid tumor and ascitic tumor of sarcoma 180. It did not change significantly the immunoorgan weight but potentiated immune responses such as B cell differentiation and the release of superoxide anion from macrophages. These results suggest that the protein-bound polysaccharide of LC43 exhibited antitumor activities through the activation of immune-related cells and acted as an immunmodulator.

• Archives of Pharmacal Research
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• 제25권4호
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• pp.457-462
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• 2002

Oregonin, a diarylheptanoid derivative from Alnus hirsuta Turcz, Betulaceae, was evaluated for its antitumor activity. Oregonin, known to have an antitumor function, and is a novel immunomodulator, which may augment macrophage activity. MTT assays and NO production tests were performed in order to investigate the cytotoxicity of oregonin in tumor cells and to examine its influence on macrophage in detail. In this study, the tumoricidal activity was also evaluated by a MTT assay. The cytotoxicity measurements in the oregon in-treated group both in vitro and in vivo showed a significant difference from that of the control group. In vivo, oregonin significantly increased NO production in a dose-dependent manner, and in vitro, the thioglycolate-induced inflammatory macrophages increased NO production in a dose-dependent manner after incubation. These results suggest that oregonin reacts with both the inflammatory and non-inflammatory macrophages in a similar way.