Objectives : Betula Platyphylla(BP) is a traditional analgesic, anti-fungal, anti-inflammatory herb used in Chinese 1medicine. However, no information is available to explain its action. In this study. we investigated the anti-inflammatory 1effects of BP to elutidate the molecular pharmacological activity in the ethanol extract of BP(BPE). Methods : We performed WTS assay in lipopolysaccharide (LPS) stimulated RAW264.7 macrophages with BPE. Nitrite was measured by Griess assay, prostaglandin E2 (PGE2) by enzyme-linked immunosorbent assay (ELISA) in LPS induced RAW264.7 macrophages with BPE. Inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX-2) were determined by Western blot. Activation of nuclear factor-kappaB (NF-kB) was measured by electrophoretic mobility shift assay (EMSA). Results : BPE significantly suppressed production of nitric oxide (NO) and PGE2 in LPS-induced RAW264.7 macrophages in a dose-dependent manner. The maximal inhibition rate of NO and PGE2 production by BPE was ca. 88.8% and 93% at the concentration of $100{\mu}g/ml$ (non-cytotoxic concentration), respectively. BPE also decreased iNOS protein and COX-2 protein in LPS-induced RAW264.7 macrophages. EMSA demonstrated that BPE inhibited the DNA binding activity of the NF-kB. Conclusions : These results suggest that BPE inhibits NF-${\kappa}B$-mediated gene expression and downregulates inflammatory mediator production in RAW264.7 macrophages.
Purpose: Abeliophyllum distichum (A.distichum) is a plant native to Korea. In this study, we investigated the mechanism of antioxidant and anti-inflammatory effects of the leaf extract of A.distichum. Methods: The antioxidant capacity of the A.distichum leaf extract was determined based on the total polyphenol content, 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) assay, and the ferric reducing antioxidant power (FRAP) assay. The anti-inflammatory effects of the A.distichum leaf extract were evaluated by measuring the production of nitric oxide (NO) and the expression levels of proinflammatory cytokines including tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and IL-6 using the enzyme-linked immunosorbent assay (ELISA) and reverse transcription quantitative real-time PCR (RT-qPCR). In addition, the expression of heme oxygenase-1 (HO-1), nuclear transcription factor-erythroid 2 related factor (Nrf2), inducible nitric oxide synthase (iNOS), and cyclooxygenase 2 (COX-2), as well as the activation of nuclear factorkappa B (NF-ĸB) were examined using the western blot analysis. Results: The total polyphenol content of the A.distichum leaf extract was 329.89 ± 30.17 gallic acid equivalents mg/g and the DPPH and ABTS scavenging activities were 55% and 70%, respectively. Additionally, the FRAP value of the extract was 743.68 ± 116.59 mg/mL. After 12-hour treatment with the A.distichum leaf extract, there was a tendency for the Nrf2 expression to increase, and the expression of HO-1 was significantly elevated in the RAW264.7 cells. The A.distichum leaf extract treatment resulted in decreased levels of NO, TNF-α, IL-6, and IL-1β, as well as reduced expression of iNOS and COX-2, along with inhibition of NF-κB activation in lipopolysaccharide-stimulated RAW264.7 cells. Conclusion: These results suggest that the A.distichum leaf extract exerts antioxidative and anti-inflammatory effects by upregulating the expression of HO-1 and downregulating NF-κB activation.
Objectives : In recent years, many studies have been widely researching anti-inflammation effect of various medicinal plants. $Cinnamomi$$Cortex$ was not enough in researching of the anti-inflammation. Moreover, there is no comparative study about extraction methods. Therefore, we investigated the inhibitory effects of $Cinnamomi$$Cortex$ pharmacopuncture by EtOH and Hot water extraction on Nitric oxide(NO), Prostaglandin E2(PGE2) production, Cyclooxygenase(COX)-2, inducible NOS(iNOS) expression and extracellular signal regulate kinase(ERK)1/2 phosphorylation in lipopolysaccharide(LPS) induced RAW 264.7 macrophage cell. Methods : $Cinnamomi$$Cortex$ was extracted by EtOH and Hot water. RAW 264.7 macrophage cell viability was measured by MTT assay. Effect of $Cinnamomi$$Cortex$ pharmacopuncture on NO and PGE2 production in LPS induced macrophages was accessed by Griess assay and enzyme-linked immunospecific assay(ELISA), respectively. Inhibition effect on COX-2, iNOS expression and ERK1/2 phosphorylation was examined by Immunoblotting assay. Results : 1. Cytotoxic effect of $Cinnamomi$$Cortex$ pharmacopuncture by Hot water extraction in RAW 264.7 macrophages was not appeared, except $3125{\mu}g/m{\ell}$. And cytotoxic effect was not appeared in EtOH extraction method. 2. $Cinnamomi$$Cortex$ pharmacopuncture by EtOH and Hot water extraction inhibited NO production in LPS induced macrophages significantly. 3. $Cinnamomi$$Cortex$ pharmacopuncture by EtOH and Hot water extraction inhibited PGE2 production in LPS induced macrophages significantly. 4. $Cinnamomi$$Cortex$ pharmacopuncture by EtOH and Hot water extraction inhibited COX-2, iNOS expression in LPS induced macrophages. Especially, it has been confirmed that COX-2, iNOS expression were effectively inhibited in Hot water extraction. 5. $Cinnamomi$$Cortex$ pharmacopuncture by EtOH and Hot water extraction inhibited ERK1/2 phosphorylation in LPS induced macrophages. Especially, it has been confirmed that ERK1/2 phosphorylation was effectively inhibited in Hot water extraction. Conclusions : According to the results, $Cinnamomi$$Cortex$ pharmacopuncture suppresses NO, PGE2 production, COX-2, iNOS expression and ERK1/2 phosphorylation in LPS induced macrophages. It has a potential for treating various inflammatory diseases, and Hot water extraction method could be used more extensively than EtOH extraction method.
Objectives : The aim of this study is to characterize the effect of Chungganhaeju-tang on $TGF-{\beta}l$-induced hepatic fibrosis. Materials and Methods : mRNA and protein expression levels of $TGF-{\beta}l$ in Chungganhaeju-tang treated HepG2 cells were compared to untreated cells using quantitative RT-PCR and ELISA assay, respectively. mRNA expression levels of the $TGF-{\beta}l$ signaling pathway genes $(T{\beta}R-I,\;T{\beta}R-II,\;Smad2,\;Smad3,\;Smad4,\;and\;PAI-1)$ and fibrosis-associated genes (CTGF, fibronectin, and collagen type $l{\alpha}$) were evaluated by quantitative RT-PCR. The effect of Chungganhaeju-tang on cell proliferation of T3891 human fibroblast was evaluated using $[^3H]Thymidine$ Incorporation Assay. Results : Inhibition of $TGF-{\beta}l$ mRNA expression and protein production was observed with treatment of Chungganhaeju-tang and seen to be dose and time dependent. Whereas $TGF-{\beta}l$-mediated induction of PAI-1 was suppressed with treatment of Chungganhaeju-tang, expression of the $TGF-{\beta}l$ signaling pathway genes such as $T{\beta}R-I$, $T{\beta}R-II$, Smad2, Smad3, and Smad4 was not affected. With treatment of Chungganhaeju-tang, inhibition of $TGF-{\beta}l$-induced cell proliferation of T3891 human fibroblast was observed, as well as abrogation of $TGF-{\beta}l$-mediated transcriptional up-regulation of CTGF, fibronectin, and collagen type $I{\alpha}$. Conclusion : This study strongly suggests that the liver cirrhosis-suppressive activity of Chungganhaeju-tang may be derived at least in part from its inhibitory effect on $TGF-{\beta}l$ functions, such as blockade of $TGF-{\beta}l$ stimulation of fibroblast cell proliferation and fibrosis-related gene expression as well as expression of $TGF-{\beta}l$ itself.
Semaphoring is a transmembrane receptor which participates in many cytokine-mediated signal pathways that are closely related to the angiogenesis, occurrence and development of carcinoma. The present study was designed to access the effect of mono-antibody (mAb) guided radioimmunotherapy (RIT) on skin carcinoma and investigate the potential mechanisms. Semaphoring mAb was acquired from mice (Balb/c), purified with rProtein A column; purity, concentration and activity were tested with SDS-PAGE and indirect ELISA; specificity and expression on the cutanuem carcinoma line and tissue were tested by Western blotting; morphology change was assessed by microscopy. MTT assay and colony inhibition tests were carried out to test the influence on the proliferation of tumor cells; Western blotting was also carried out for expression of apoptosis-associated (caspase-3, Bax, Bcl-2) and proliferation-related (PI3K, p-Akt, Akt, p-ERK1/2, ERK1/2) proteins and analyse the change in signal pathways (PI3K/Akt and MEK/ERK). The purity of purified semaphorin mAb was 96.5% and the titer is about $1{\times}10^6$. Western blotting showed semaphoring mAb to have specifically binding stripes with semaphoring b1b2 protein, B16F10, and A431 cells at 39KDa, 100KDa and 130KDa, respectively. Positive expression was detected both in cutanuem carcinoma line and tissue and it mostly located in cell membranes. MMT assay revealed dose-relate and time-relate inhibitory effect of semaphorin mAb on A431 and B16F10. Colony inhibition tests also showed dose-relate inhibitory effects. Western blotting demonstrated the expression of apoptosis and proliferation-related protein and changes in signal pathway. In conclusion, we demonstrated that semaphorin is highly expressed on the tumor cell-surfaces and RIT with semaphorin mAb has effect in i nhibiting proliferation and accelerating apoptosis of tumor cells.
Cervical cancer is one of the leading causes of female death from cancer worldwide with about 500,000 deaths per year. A strong association between certain human papilloma viruses (HPV type 16 and 18) and cervical cancer has been well known. An extract of Saururus chinensis, named as PE-46, has been used to investigate whether this agent has the ability of inhibiting the oncogenes E6 and E7 of HPV type 16. PE-46 inhibited the proliferation of human cervical cancer cell lines in a dose response manner. PE-46 also inhibited the in vitro binding of E6 and E6AP which are essential for the binding and degradation of the tumor suppressor p53. In addition, PE-46 inhibited the in vitro binding of E7 and Rb which is essential tumor suppressor for the control of cell cycle. The levels of mRNA for E6 and E7 were also decreased by PE-46. SiHa cells treated with PE-46 induced G0/G1 arrest, resulting in inhibition of growth. Our study showed that the PE-46 can inhibit the cervical carcinomas via both inhibition of bindings between oncogenes and tumor suppressors, and inhibition of G1longrightarrowS transition. PE-46 inhibited the oncogenecity of E6 and E7 of HPV 16 type, thus could be used as a putative modulating agent for the treatment of cervical carcinomas caused by HPV.
Several solvents were used to fractionate an extract obtained from the chapped root bark of Ulmus davidiana Planchon. The each fractionary part was condensed under reduced pressure and then examined to investigate the inhibitory effect on MMPs by modified gelatin zymography, where EA fraction showed the inhibition effect on the activity of MMPs. A compound showing inhibition effect on the MMPs was isolated and purified from EA fraction. Under IR, $^1H$- and $^{13}C$- NMR analyses it is very close to a catethin. This substance showed 48% inhibition effect on measurement of MMP-9 activity at 5 mM and 43% at 10 mM. To verify the effect of this substance on cells, human hepatoma, SK-Hep-1 cells as a cancer model, and Chang liver cells as a normal model were selected. MTT assay was performed to examine the cell viability by treatment of $1{\mu}L/mL$ of the purified substance on cells. The purified substance showed negligible toxicity on human liver cell line.
Leptin and its receptor are involved in breast carcinogenesis as mitogenic factors. Therefore, they could be considered as targets for breast cancer therapy. Expression of the leptin receptor gene could be modulated by leptin secretion. Silibinin and curcumin are herbal compounds with anti-cancer activity against breast cancer. The aim of this study was to assess their potential to inhibit of expression of the leptin gene and its receptor and leptin secretion. Cytotoxic effects of the two agents on combination on T47D breast cancer cells was investigated by MTT assay test after 24h treatment. With different concentrations the levels of leptin, leptin receptor genes expression were measured by reverse-transcription real-time PCR. Amount of secreted leptin in the culture medium was determined by ELISA. Data were statistically analyzed by one-way ANOVA test. The silibinin and curcumin combination inhibited growth of T47D cells in a dose dependent manner. There were also significant difference between control and treated cells in leptin expression and the quantity of secreted leptin with a relative decrease in leptin receptor expression. In conclusion, these herbal compounds inhibit the expression and secretion of leptin and it could probably be used as drug candidates for breast cancer therapy through leptin targeting in the future.
Background: Type I allergy is involved in allergic asthma, allergic rhinitis, and atopic dermatitis which are accompanied by an acute and chronic allergic inflammatory responses. Rehmannia glutinosa is a traditional medicine in the East Asian region. This study examined whether a Rehmannia Glutinosa pharmacopuncture solution (RGPS) had anti-allergic or anti-inflammatory effects in antigen-stimulated-RBL-2H3 cells. Methods: We determined the effect of RGPS on cell viability using the 3-[4,5-dimethylthiazolyl]-2,5-diphenyltetrazolium bromide (MTT) assay. We also examined the effect of RGPS on the release of ${\beta}$-hexosaminidase and the secretion of IL-4 and TNF-${\alpha}$ using ELISA. In addition, we evaluated the effect of RGPS on the mRNA expression of various cytokines; IL-2, IL-3, IL-4, IL-5, IL-13 and TNF-${\alpha}$ using RT-PCR. Furthermore, we assessed the activation of mitogen-activated protein kinases (MAPKs) and nuclear factor (NF)-${\kappa}$B using Western blotting after RGPS treatment. Results: We found that RGPS ($10^{-4}$ to $10^{-1}$ dilution) did not cause any cytotoxicity. We observed significant inhibition of ${\beta}$-hexosaminidase release and suppression of the protein secretion of IL-4 and TNF-${\alpha}$ and mRNA expression of multiple cytokines in antigen-stimulated-RBL-2H3 cells after RGPS treatment. Additionally, RGPS suppressed not only the phosphorylation of MAPKs, but also the transcriptional activation of NF-${\kappa}$B in antigen-stimulated-RBL-2H3 cells. Conclusions: These results suggest that RGPS inhibits degranulation and expression of cytokines including IL-4 and TNF-${\alpha}$ via down-regulation of MAPKs and NF-${\kappa}$B activation in antigen-stimulated-RBL-2H3 cells. In conclusion, RGPS may have beneficial effects in the exerting anti-allergic or anti-inflammatory activities.
Codium fragile (CF) is an edible green alga consumed as a traditional food source in Korea. In this study, the ethanol extract of CF was evaluated to determine if it has anti-inflammatory activity. Lipopolysaccharide (LPS), a toxin from bacteria, is a potent inducer of inflammatory cytokines, such as tumor necrosis factor (TNF)-$\alpha$ and interleukin (IL)-6. Therefore, we studied whether CF extracts have an anti-inflammatory effect in LPS-induced murine macrophage cell lines (RAW 264.7). In the present study, IL-6 production was measured using an enzyme-linked immunosorbent assay (ELISA), prostaglandin $E_2$($PGE_2$) production was measured using the EIA kit, and cyclooxygenase (COX)-2 and mitogen-activated protein kinase (MAPK) activation were determined by Western blot analysis. IL-6 mRNA, COX-2 mRNA and iNOS mRNA expression were measured using reverse transcription-polymerase chain reaction (RT-PCR). The results indicated that CF extracts inhibit LPS-induced IL-6, NO and PGE2 production in a dose-dependent manner, as well as expression of iNOS and COX-2. CF extracts significantly inhibited LPS-induced c-Jun N-terminal kinase (JNK) 1/2 phosphorylation. Taken together, these findings may help elucidate the mechanism by which CF modulates RAW 264.7 cell activation under inflammatory conditions.
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