• International Journal of Oral Biology
• /
• v.32 no.3
• /
• pp.113-118
• /
• 2007

Treatment of oral cancers with chemotherapeutic agents become evaluated as an effective method to reduce cancer cell proliferation. Anti-proliferative and anti-oral cancer activities of momordin I on oral cancer cells were evaluated in this study. Momordin I was originally purified from a natural product, Ampelopsis radix and showed the antiproliferative activity against oral carcinoma, KB cells. Obtained $IC_{50}$ value was approximately $10.4{\mu}g/ml$. Time-and dose-dependent chromosomal DNA fragmentations were observed in momordin I-treated KB cells. Flow cytometry analysis showed time-dependent apoptotic cell appearance after treatment of momordin I. Approximately 18.6% apoptotic cells were observed at 72 hours after $20{\mu}g/ml$ of momordin I treatment. These observation were consistent with the results obtained in DNA fragmentation analysis. These data suggest that momordin I has anti-proliferative effect and induces cell death in KB cells through apoptosis.

• Asian Pacific Journal of Cancer Prevention
• /
• v.14 no.7
• /
• pp.4229-4233
• /
• 2013

Abraxane (nab-paclitaxel) is a member of the group of nano chemotherapeutics. It is approved for metastatic breast cancer and non small cell lung cancer. Trials for several cancer types including gynecological cancers, head and neck, and prostatic cancer are being studied. In this study, the antiproliferative and apoptotic effect of abraxane was evaluated on HeLa cell line originated from human cervix carcinoma. Three different doses ($D_1$=10 nM, $D_2$=50 nM, $D_3$=100 nM) were administered to HeLa cells for 24, 48 and 72 h. The 50 nM dose of abraxane decreased DNA synthesis from 4.62-0.08%, mitosis from 3.36-1.89% and increased apoptosis from 10.6-30% at 72 h. Additionally, tripolar metaphase plates were seen in mitosis preparations. In this study, abraxane effected cell kinetic parameters significantly. This results are consistent with other studies in the literature.

• Korean Journal of Veterinary Service
• /
• v.25 no.4
• /
• pp.371-376
• /
• 2002

To determine the effect of picolinic acid on NOㆍ production, murine macrophages were incubated with either medium, various concentrations of picolinic acid, or IFN-${\gamma}$ plus picolinic acid for 48 hr. Picolinic acid does not induce NOㆍ production by itself, it acted synergistically with INF-${\gamma}$ for the induction of reactive nitrogen intermediate production in murine macrophages. Thymidine incorporation appeared to be reciprocally related to nitrite levels, suggesting that IFN-${\gamma}$ plus picolinic acid induced NOㆍ synthesis exerted antiproliferative effects.

• YAKHAK HOEJI
• /
• v.45 no.2
• /
• pp.161-168
• /
• 2001

The possible mechanism of the antiproliferative and apoptotic effects of Boswellia carterri water extract were studied in HL-60 human leukemia cells. The cytotoxicity of HL-60 cells after the treatment of Boswellia carterii water extract showed dose- and time-dependent manner. The apoptotic effect of 300 $\mu$g/ml Boswellia carterii water extract was demonstrated by DNA laddering. The activity of caspase 3-1ike protease was markedly increased in HL-60 cells treated with Boswellia carterii water extract. Furthermore, the level of Bcl-2 was time-dependently reduced, whereas Bax protein level was enhanced by Boswellia carterii water extract treatment. In conclusion, our results suggest that apoptotic effect of Boswellia carterii water extract may partly mediated through activations of caspase-3 activity and Bax expression, and inhibition of Bcl-2 expression.

• Journal of Life Science
• /
• v.27 no.5
• /
• pp.561-566
• /
• 2017

Dendropanax morbifera Lev. is known in Korea for its golden sap and medicinal properties. The many biological activities of the leaf and stem extracts suggest that this tree could be a valuable source of medicinal compounds for the treatment of various ailments such as dermatitis, migraines, dysmenorrhea, muscle pain, and infectious diseases. However, there is little information on the composition and biological activity of the volatile fraction of D. morbifera. Therefore, in this study, the volatile compounds in leaves, stems, and sap of D. morbifera were isolated using solvent and supercritical fluid extraction (SFE), and analyzed by gas chromatography/mass spectrometry to reveal their chemical composition and identify potential compounds of interest. Fifteen compounds were identified in the leaf extracts, whereas 29 and 3 compounds were identified in the stem and sap extracts, respectively. The volatile profiles obtained using solvent and SFE differed. Esters and aromatic hydrocarbons predominated in the solvent extract of leaves and SFE extract of stems, whereas the solvent extract of stems and SFE extract of leaves contained terpenoids. Limonene, ${\alpha}$-pinene, and ${\beta}$-myrcene were identified in the volatile extract of sap, with limonene representing 96.30% of the total peak area. In addition, the antiproliferative effects of the solvent extracts of leaves and stems were evaluated, revealing that these solvent extracts were particularly effective in decreasing the proliferation of HepG2 cells.

• Journal of Microbiology and Biotechnology
• /
• v.12 no.3
• /
• pp.470-475
• /
• 2002

In the course of screening for a novel cell cycle inhibitor, a potent Cdk 1 inhibitor, HY558, was found from the culture broth of Penicillium minioluteum F558 isolated from a soil sample. The molecular ion of HY558 was identified at m/z 329 (MH+) with a molecular formula of $C_20H_44ON_2$. HY558 exhibited selective antiproliferative effects on various human cancer cell lines. Its $IC_50$ values were estimated to be 0.29 mM on HepG2, 0.30 mM on HeLa, 0.30 mM on HL6O, 0.33 mM on HT-29, and 0.25 mM on AGS cells. Interestingly, Hy558 demonstrated no antiproliferative effect with normal lymphocytes used as the control, and a low level of inhibition on the proliferation of A549 cancer cells. A flow cytometric analysis of HepG2 cells revealed an appreciable arrest of cells at the G1 and G2/M phases of the cell cycle following treatment with Hy558. furthermore, DNA fragmentation due to apoptosis was observed in HeLa cells treated with 0.46 mM of HY558.

• BMB Reports
• /
• v.40 no.3
• /
• pp.358-367
• /
• 2007

A novel mannose-binding tuber lectin with in vitro antiproliferative activity towards human cancer cell lines and antiviral activity against HSV-II was isolated from fresh tubers of a traditional Chinese medicinal herb, Typhonium divaricatum (L.) Decne by a combined procedure involving extraction, ammonium sulfate precipitation, ion exchange chromatography on DEAE-SEPHAROSE, CM-SEPHAROSE and gel-filtration on sephacryl S-200. The apparent molecular mass of the purified Typhonium divaricatum lectin (TDL) was 48 kDa. TDL exhibits hemagglutinating activity toward rabbit erythrocytes at 0.95 $\mu$g/ml, and its activity could be strongly inhibited by mannan, ovomucoid, asialofetuin and thyroglobulin. TDL showed antiproliferative activity towards some well established human cancer cell lines, e.g. Pro-01 (56.7 $\pm$ 6.8), Bre-04 (41.5 $\pm$ 4.8), and Lu-04 (11.4 $\pm$ 0.3). The anti-HSV-II activity of TDL was elucidated by testing its HSV-II infection inhibitory activity in Vero cells with $TC_50$ and $EC_50$ of 5.176 mg/ml and 3.054 $\mu$g/ml respectively. The full-length cDNA sequence of TDL was 1145 bp and contained an 813-bp open reading frame (ORF) encoding a 271 amino acid precursor of 29-kDa. Homology analysis showed that TDL had high homology with many other mannose-binding lectins. Secondary and three-dimensional structures analyses showed that TDL is heterotetramer and similar with lectins from mannose-binding lectin superfamily, especially those from family Araceae.

• Asian Pacific Journal of Cancer Prevention
• /
• v.17 no.1
• /
• pp.315-321
• /
• 2016

Background: Herbal medicine has becoming a potential source of treatment for different types of cancer including breast cancer. It has been shown that plants from the family Rhamnaceae possess anticancer activity. Objective: In this study, we determined the antiproliferative influence of Ziziphus spina christi- a species from this family- on the MCF-7 (human breast adenocarcinoma) cell line. Materials and Methods: The cytotoxicity of the total extract, ethanol, ethanol-aqueous (1:1) as well as aqueous fractions of Ziziphus spina christi leaves was evaluated through MTT assay against MCF-7 cell line. Cell cycle inhibition and apoptosis induction were assessed by flowcytometry cycle RNase/PI analysis and Annexin V-FLUOS, respectively. Apoptosis was also analyzed by immunoblotting assay. Results: Our results indicated that the ethanolic fraction had the lowest $IC_{50}$ value (0.02 mg/ml), induced cell cycle arrest at the G1/S phase as well as apoptosis after a 48h of treatment. Conclusions: This is the first report on anticancer effect of Ziziphus spina christi ethanolic fraction on breast cancer cells, providing a scientific basis for its utility in traditional medicine. However, further in-depth studies are needed to confirm the precise mechanisms.

• Korean Journal of Fisheries and Aquatic Sciences
• /
• v.45 no.6
• /
• pp.553-560
• /
• 2012

Hizikia fusiformis, a brown alga that is widely consumed in Korea, Japan, and China, possesses a number of potentially beneficial compounds, including antioxidants and anticoagulants. However, the molecular mechanisms of H. fusiformis in hepatoma cells have not been elucidated. This study investigated the antiproliferative effect and mechanism of action of a glycoprotein from H. fusiformis (HFGP) in HepG2 human hepatoma cells. In an MTS assay, 25 ${\mu}g/mL$ HFGP inhibited the proliferation of HepG2 cells by $52.36{\pm}2.37%$. HFGP caused the dose-dependent growth inhibition of HepG2 cells by inducing apoptosis and a sub-G1 phase arrest. The antiproliferative activity of HFGP was confirmed based on the expression of several apoptosis-related proteins, which was assessed by Western blot analysis. The expressions of Fas, Fas-associated death domain protein, Bax, and Bad was significantly up-regulated in HFGP-treated cells, and HFGP induced the translocation of Bax to mitochondria and the release of cytochrome c into the cytosol. Therefore, HFGP might be useful in the treatment of liver cancer.

• The Korean Journal of Physiology and Pharmacology
• /
• v.15 no.5
• /
• pp.279-283
• /
• 2011

Quercetin (3,3',4',5,7-pentahydroxyflavone) is an attractive therapeutic flavonoid for cancer treatment because of its beneficial properties including apoptotic, antioxidant, and antiproliferative effects on cancer cells. However, the exact mechanism of action of quercetin on ion channel modulation is poorly understood in bladder cancer 253J cells. In this study, we demonstrated that large conductance $Ca^{2+}$-activated $K^+$ ($BK_{Ca}$) or MaxiK channels were functionally expressed in 253J cells, and quercetin increased $BK_{Ca}$ current in a concentration dependent and reversible manner using a whole cell patch configuration. The half maximal activation concentration ($IC_{50}$) of quercetin was $45.5{\pm}7.2{\mu}m$. The quercetin-evoked $BK_{Ca}$ current was inhibited by tetraethylammonium (TEA; 5 mM) a non-specific $BK_{Ca}$ blocker and iberiotoxin (IBX; 100 nM) a $BK_{Ca}$-specific blocker. Quercetin-induced membrane hyperpolarization was measured by fluorescence-activated cell sorting (FACS) with voltage sensitive dye, bis (1,3-dibutylbarbituric acid) trimethine oxonol ($DiBAC_4$2(3); 100 nM). Quercetin-evoked hyperpolarization was prevented by TEA. Quercetin produced an antiproliferative effect ($30.3{\pm}13.5%$) which was recovered to $53.3{\pm}10.5%$ and $72.9{\pm}3.7%$ by TEA and IBX, respectively. Taken together our results indicate that activation of $BK_{Ca}$ channels may be considered an important target related to the action of quercetin on human bladder cancer cells.