• Journal of Microbiology and Biotechnology
• /
• 제14권3호
• /
• pp.628-630
• /
• 2004

Antitumor activities of a peptide fraction isolated from traditional Korean soy sauce (SSP) were investigated in vitro and in vivo using cancer cell lines and F9 teratocarcinoma-bearing BALB/c mice. SSP exerted a dose-dependent antiproliferative effect on P388D1 mouse lymphoma, F9 mouse teratocarcinoma, and DLD-l human colon cancer cells with $IC_{50}$ values of 11, 50, and $50\mug/ml$, respectively. Tumor growth in F9 teratocarcinoma-bearing BALB/c mice, orally administered with 80 and 200 mg/kg/day of SSPs, was inhibited 10.3% and 52.4%, respectively, and survival days increased by 11.9% and 22.1%, respectively, compared to the control group. The results of antitumor activities exerted by SSP in vitro and in vivo suggest the feasibility of using SSP as an antitumor agent.

• Archives of Pharmacal Research
• /
• 제10권3호
• /
• pp.179-183
• /
• 1987

To investigate antitumor constituents of higher fungi, the carpophores of Polyporus giganteus Pers. ex. Fr. (81 g, dry weight) which were collected in Indiana, U. S. A. were examined for antitumor activity. Two protein-bound-polysaccharide fractions (I and II) were prepared from the hot water extract and one fraction (III) from the 0.1 N NaOH extract of the carpophores. The antitumor effect of each fraction was tested against sarcoma 180 implanted subcutaneously in female ICR mice. Of three fractions, Fraction II showed 85.2% inhibition ratio at the dose of 20 mg/kg/day for 10 days and was named gigantan. Gigantan was found to contain 59% polysaccharide and 27% protein. Its polysaccharide moity was a heteroglycan that consisted of mainly glucose (89.3%), galactose (7.7%), minaose (2.0%) and fructose (1.0%).

• 약학회지
• /
• 제42권5호
• /
• pp.487-493
• /
• 1998

In the previous study we described the antitumor effect of GLB, a protein-polysaccharide fraction separated from the growing tips of Ganoderma lucidum, against sarcoma 18 0 solid tumor in ICR mice. In this study, we separated an acidic protein-polysaccharide fraction, GLB-A, and a basic protein-polyaccharide fraction, GLB-B, from GLB by differential precipitation, and elucidated their antitumor and immunomodulatory activities. When ip injected at the dose of 50mg/kg/day into the ICR mice, GLB-A and GLB-B inhibited the growth of ip implantated sarcoma 180 cells by 32.4% and 21.0%, respectively. Of these, GLB-A increased the % lymphoblast in the spleen of the tumor-bearing and the normal mice by 20.9% and 123.0%, and the CD4/CD8 ratio by 73.3% and 22.4%, respectively. GLB-A also increased the expression of CD25 (IL-2 receptor alpha ch0ain) in normal mice by 82.0%. These results strongly suggest that GLB-A is a promising candidate for antitumor immunomodulatory medicine.

• 대한한방내과학회지
• /
• 제12권2호
• /
• pp.1-15
• /
• 1991

Bigihwan which has been widely used in Oh-jug in oriental Medicine was investigated on its antitumor effect employing blood cancer cell lines. K 562 derived from human erytholeukemia, Raji from lymphoma and $MO_4$ from hlastogenic cancer were used in this study to see the analytical evaluation of Bigihwan' s antitumor effect using three different kinds of methods such as $^{3}H-thymidine$ up take assay. MTT assay and live cell counts by Trypan blue assay. The result obtained are as follows. 1. When higher than 10% Bigihwan was treated. inhibitory effect of tumor killing action was observed showing the increasing order of $MO_4$, K 562 and Raji(Fig. 3). 2. When 1 to 5% of Bigi-hwan was treated, 4 to 30% of tumor cell survival was observed according to various blood tumor cell lines suggesting that antitumor effect of Bigi-hwan was different as the characteristics of tumor cells showing 70 to 95% cell killing effent(Fig. 4). 3. Compared the survivals of cells by relative scales though the initial cpm was variable because of different cell growth rate. Raji was most effective being killed 95% by the treatment of 1% Bigihwan while Raji and K562 showed 93% by 5% Bigihwan.(Fig. 5) 4. The survival rate of Raji derived from Burkitt lymphoma was rather increased to 2.3 times when Bigihwan concentration was increased from 1 to 10% lmplying of refraining from over use of this anticancer drug. specially to lymphoma patients(Fig. 5). 5. Bigihwan was most effective to K 562 and then $MO_4$ showing 95% tumor cell death by using 1% of this anticancer drug while it was least effective to Raji showing only 68% of tumor cell death(Fig.7). 6. Judging from the all the analytical methods used in this study, through all different three tumor cell lines. Bigihwan was most effective to K 562 derived from human erythroleukemia.

• Journal of Ginseng Research
• /
• 제40권4호
• /
• pp.400-408
• /
• 2016

Background: Ginsenoside Rh2 (GRh2) is the main bioactive component in American ginseng, a commonly used herb, and its antitumor activity had been studied in previous studies. PDZ-binding kinase/T-LAK cell-originated protein kinase (PBK/TOPK), a serine/threonine protein kinase, is highly expressed in HCT116 colorectal cancer cells. Methods: We examined the effect of GRh2 on HCT116 cells ex vivo. Next, we performed in vitro binding assay and in vitro kinase assay to search for the target of GRh2. Furthermore, we elucidated the underlying molecular mechanisms for the antitumor effect of GRh2 ex vivo and in vivo. Results: The results of our in vitro studies indicated that GRh2 can directly bind with PBK/TOPK and GRh2 also can directly inhibit PBK/TOPK activity. Ex vivo studies showed that GRh2 significantly induced cell death in HCT116 colorectal cancer cells. Further mechanistic study demonstrated that these compounds inhibited the phosphorylation levels of the extracellular regulated protein kinases 1/2 (ERK1/2) and (H3) in HCT116 colorectal cancer cells. In vivo studies showed GRh2 inhibited the growth of xenograft tumors of HCT116 cells and inhibited the phosphorylation levels of the extracellular regulated protein kinases 1/2 and histone H3. Conclusion: The results indicate that GRh2 exerts promising antitumor effect that is specific to human HCT116 colorectal cancer cells through inhibiting the activity of PBK/TOPK.

• Journal of Microbiology and Biotechnology
• /
• 제29권9호
• /
• pp.1444-1452
• /
• 2019

The conventional prophylactic vaccines for human papillomavirus (HPV) efficiently prevent infection with high-risk HPV types, but they do not promote therapeutic effects against cervical cancer. Previously, we developed HPV16 E7-expressing Lactobacillus casei (L. casei-E7) as a therapeutic vaccine candidate for cervical cancer, which induces antitumor therapeutic effects in a TC-1 murine cancer model. To improve the therapeutic effect of L. casei-E7, we performed co-treatment with poly-gamma-glutamic acid (${\gamma}-PGA$), a safe and edible biomaterial naturally secreted by Bacillus subtilis. We investigated their synergistic effect to improve antitumor efficacy in a murine cancer model. The treatment with ${\gamma}-PGA$ did not show in vitro cytotoxicity against TC-1 tumor cells; however, an enhanced innate immune response including activation of dendritic cells was observed. Mice co-administered with ${\gamma}-PGA$ and L. casei-E7 showed significantly suppressed growth of TC-1 tumor cells and an increased survival rate in TC-1 mouse models compared to those of mice vaccinated with L. casei-E7 alone. The administration of ${\gamma}-PGA$ markedly enhanced the activation of natural killer (NK) cells but did not increase the E7-specific cytolytic activity of $CD8^+$ T lymphocytes in mice vaccinated with L. casei-E7. Overall, our results suggest that oral administration of ${\gamma}-PGA$ induces a synergistic antitumor effect in combination with L. casei-E7.

• Archives of Pharmacal Research
• /
• 제19권5호
• /
• pp.416-422
• /
• 1996

Twenty one phenylacetylshikonin analogues were synthesized from various subsitituted phenyl acetic acids and their cytotoxicity values against A549, K562 and L1210 cell lines and antitumor action in mice bearing S-180 cells were measured. All of phenylacetylshikonin analogues expressed a potent cytotoxicity $(ED_{50}, 0.1-1.80{\mu}g/ml)$ against L1210 and K562 cells. L1210 cells were the most sensitive to shikonin analogues among these cells. Except 4-methosyphenylacetylshikonin $(0.098 {\mu}g/ml)$, and a-acetoxyphenylacetylshikonin $(0.10 {\mu}g/ml)$, all other shikonin derivatives sshowed higher $ED_{50}$ values than phenylacetylshikonin $(0.13{\mu}g/ml)$, in L1210. In K562 cell, a-substitution of phenylacetylshikonin $(0.1{\mu}g/ml)$, while other subsitutions increased it slightly; 4-methoxyphenylacetylshikonin $(0.033{\mu}g/ml)$ showed a exceptionally good cytotoxicity against K562 cell. 4-Halogenation tended to decrease the cytotoxic effect on L1210 cells, while it enhanced the effect on K562; 4-bromophenylacetyl $$[ED_{50};(L1210)=1.76{\mu}g/ml, ;ED_{50};(K 562)=0.32 {\mu}g/ml]$$ and 4-chlorophenylacetyl shikonin $$[ED_{50};(L1210)=1.64 {\mu}g/ml, ;ED_{50};(K562)=0.32 {\mu}g/ml]$$. In contrast, A549 cells were much less sensitive to these shikonin analogues which showed $ED_{50}$ values of$1.5-1.35 {\mu}g/ml)$.Most of phenylacetylshikonin derivatives showed good antitumor activity in mice bearing S-180 cells. a-A-cetoxyphenylacetylshikonin and 4-dimethylaminophenylacetylshikonin showed highest T/C value (192-195%), implying that introduction of a-acetyl or of 4-dimethylamino group enhanced the antitumor activity as shown for 4-dimethylaminophenylacetylshikonin (T/C, 192%). It might be due to improvement of water solubility by dimethylamino group in the molecule.

• 대한한의학회지
• /
• 제23권2호
• /
• pp.211-224
• /
• 2002

Background and Objective : In order to investigate the effects of Gilgyunglwedok-tang (GRT) on antitumor activity and antimetastatic activity, studies were done experimentally. Materials and Methods : Experimental studies were perfonned for the cytotoxic effect on BALB/c mouse lung fibroblast cells, the proliferating effect of splenic lymphocyte, the expression of CD3e/CD4, CD3e/CD8, and B220 in peripheral blood mononuclear cells (PBMCs), the cytotoxic effect on A549, SK-OV-3, SK-MEL-2, MCF-7 cells, the inhibitory effect on the activity of DNA topoisomerase I, the T/C% in ICR mice bearing S-180, the inhibitory effect of Cell adhesive of A549 Cells and SK-OY-3 Cells to complex extracellular matrix, the inhibitory effect on lung colonies, the change of lung tissue, the antiangiogenic activity, and the effect on MMP-2 and MMP-9 gene expression in the RT1080 cell line. Results and Conclusion : The results were obtained as follows : 1. In the cytotoxic effect on BALB/C mouse lung fibroblast Cell, GHT didn't show the significant cytotoxic effect on BALB/C mouse lung fibroblast cell compared to the control group. 2. In thymidine uptake assay, GHT showed the significant proliferating effect of splenic lymphocyte in proportion to the concentration. 3. In the expression of CD3e/CD4, CD3e/CD8, and B220 in peripheral blood mononuclea cells (PBMCs) of mice, GRT had no significant change to the normal group in CD4. However, GRT showed an increase to the normal group in CD8 and GHT in the only $1\mu\textrm{g}/ml$ category showed an increase to the normal group in B220. 4. In the cytotoxic effect of GRT on A549, SK-OY-3, SK-MEL-2 and MCF-7 cells, there was no significant cytotoxic effect compared to the control group. 5. In the inhibitory effect on the activity of DNA topoisomerase I, GHT in the $10\mu\textrm{g}/ml$ category showed the inhibitory effect on the activity of DNA topoisomerase I in proportion to the concentration. 6. In the T/C% in ICRmice bearing S-180, GHTtreated group showed 123.7% of T/C% compared to the control group. 7. In the inhibitory effect of cell adhesive of A549 Cells and SK-OV-3 Cells to complex extracellular matrix, GRT in the only $100\mu\textrm{g}/ml$ category showed the significant inhibitory effect compared to the control group. 8. In the inhibitory effect on lung colonies, GHT showed the significant inhibitory effect on lung colonies compared to the control group. 9. In the change of lung tissue, GHT showed a significant decrease of lung cancer growth, interalveolar fibrosis and hyaline material compared to the control group. In the development of lymphocyte around lung cancer cells and lung parenchymal, GHT showed the significant inducement efficacy compared to the control group. 10. In CAM assay, the antiangiogenic activity of GHT showed 30%. 11. In the effect on MMP-2 and MMP-9 gene expression in the RT1080 cell line, GHT had no significant inhibitory effect on MMP-2 and MMP-9 gene expression compared to the control group. According to the above results, it could be suggested that GHT has an antitumor activity and antimetastatic activity.

• 대한의생명과학회지
• /
• 제14권2호
• /
• pp.83-89
• /
• 2008

We have compared the antitumor effect of photodynamic therapy (PDT), using 5-aminolevulinic acid (ALA) as the photosensitizer, combined with cisplatin (CDDP) on AMC-HN3 human squamous cell carcinoma. AMC-HN3 cells were cultured and then incubated with various concentrations of CDDP and ALA. 632 nm diode laser was given at $6.0J/cm^2$ followed by incubation for 24 hours. The evaluation of cell viability was done by MTT assay. In vivo CDDP was injected intraperitoneally 24 hours prior to PDT. The anti-tumor effects of each treatment were measured by tumor volume change. Cell viability were 44.29% for the cisplatin-mediated chemotherapy group $(6.25{\mu}g/ml)$, 77.22% for ALA-PDT group, and 15.06% for the Combination therapy group. In vivo, the antitumor effect of photodynamic therapy was enhanced by combination of Cisplatin-mediated chemotherapy. Photodynamic therapy combined with administration of Cisplatin appears to enhance antitumor effect and to be a useful treatment modality.

• Natural Product Sciences
• /
• 제2권1호
• /
• pp.29-36
• /
• 1996

This study was to evaluate the antitumor and immunopotentiation effects of Manda Enzyme (ME). Oral administration of ME (0.2ml/mouse) to tumor bearing mice significantly prolonged survival rate compared to the control group with the prolongation ratio of 40%. The inhibition ratios for the first and the second experiments were 51.8% and 26.4%, respectively. Only the spleen index was significantly increased in the MEF-treated group, but not in the control group. Gamma globulin level of the MEF-treated group was elevated when mice were injected with sarcoma-180 cells on the left groin. Activities of natural killer (NK) and lymphokineactivated killer (LAK) cells were observed by $^{51}Cr-release$ method. Activities of NK cell against YAC-1 cells were significantly increased in the MEF treated group. And LAK cell activities against P815 cells were also significantly increased in the experimental group. These observations, therefore, suggest that ME may have an anticancer effect and immunopotentiating effect in vivo.