• 제목/요약/키워드: Growth inhibitory effects

검색결과 1,194건 처리시간 0.026초

꾸지뽕잎(Cudrania tricuspidata) 추출물의 3TS-L1 세포 분화 억제 (Inhibition of Adipogenesis in 3T3-Ll Adipocytes with Water and Ethanol Extracts of Cudrania tricuspidata Leaves)

  • 도건표;이혜진;도정룡;김현구
    • 한국식품저장유통학회지
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    • 제18권2호
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    • pp.244-249
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    • 2011
  • 꾸지뽕잎의 물 및 70% 에탄올 추출물에 대한 세포의 독성 및 지방생성에 미치는 영향과 DNJ 함량과 rutin 함량을 측정하였다. Cell viability test에서 꾸지뽕잎 추출물 0.5-5 mg/mL의 농도일 때 물 및 에탄올 추출물 모두 세포의 생장에 영향을 미치지 않는 것으로 나타나 세포에 대한 독성이 없다고 판단되었다. 동일한 농도로 3T3-L1 지방세포의 지방축적에 미치는 영향은 물 및 에탄올 추출물 모두 농도 의존적으로 지방축적을 저해하는 것으로 나타났으며 추출물 농도가 5mg/mL 일 때, 물 추출물은 86%, 에탄올 추출물 50%의 지방축적을 보였다. DNJ 함량은 꾸지뽕잎의 에탄올 추출물에서 $3921.3{\mu}g/g$로 높았고 rutin의 함량은 꾸지뽕잎의 물 추출물에서 $4592.9{\mu}g/g$로 높게 나타냈다. 따라서 꾸지뽕잎 추출물에는 기능성 성분인 DNJ 함량과 rutin 함량이 다량 함유되어 있고 지방의 축적을 저해하는 효과가 있어 비만과 대사관련 질환개선을 위한 기능성 소재로 활용될 수 있다고 생각한다.

동백나무 잎 용매분획물의 항산화 및 항암 활성 (Antioxidative and Anticancer Activities of Various Solvent Fractions from the Leaf of Camellia japonica L.)

  • 김진희;정창호;심기환
    • 한국식품저장유통학회지
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    • 제17권2호
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    • pp.267-274
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    • 2010
  • 동백나무 잎을 새로운 기능성 식품의 재료로 활용하기 위하여 항산화 및 항암활성을 측정한 결과는 다음과 같다. DPPH radical 소거활성을 측정한 결과 분획물의 농도가 증가함에 따라 DPPH radical 소거활성이 증가하는 경향을 보였으며, 특히 물 분획물에서 가장 높은 DPPH radical 소거활성을 보였다. 환원력도 분획물의 농도가 증가함에 따라 환원력이 증가하는 경향을 보였으며, 환원력 또한 물 분획물에서 가장 높게 나타났다. Linoleic acid를 이용한 자동산화 억제활성을 실험한 결과 다른 분획물에 비하여 물 분획물에서 가장 높은 과산화 억제활성을 나타내었고, 분획물의 농도가 증가함에 따라 아질산염 소거활성 역시 증가하는 경향을 보였으며, 특히 부탄올 및 물 분획물을 $1,000{\mu}g/mL$의 농도로 첨가하였을 때 각각 92.15%와 95.61%의 높은 아질산염 소거활성을 보였다. 폐암세포와 결장암세포에 대한 생육억제활성을 측정한 결과 부탄올 및 물 분획물에서 가장 높은 생육억제활성을 보였다. 총 페놀릭 화합물은 부탄올 및 물 분획물에서 각각 216.26 및 220.68 mg/g으로 나타났으며, HPLC로 물 분획물의 페놀릭 화합물을 분석한 결과 quercetin과 epicatechin이 가장 많이 함유되어 있었고, 동백나무 잎의 항산화 및 항암활성은 quercetin과 epicatechin과 같은 폴리페놀 화합물에 의한 것으로 추측된다.

Anticancer Activity of Acanthopanax trifoliatus (L) Merr Extracts is Associated with Inhibition of NF-κB Activity and Decreased Erk1/2 and Akt Phosphorylation

  • Wang, Hua-Qian;Li, Dong-Li;Lu, Yu-Jing;Cui, Xiao-Xing;Zhou, Xiao-Fen;Lin, Wei-Ping;Conney, Allan H.;Zhang, Kun;Du, Zhi-Yun;Zheng, Xi
    • Asian Pacific Journal of Cancer Prevention
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    • 제15권21호
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    • pp.9341-9346
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    • 2014
  • Acanthopanax trifoliatus (L) Merr (AT) is commonly used as an herbal medicine and edible plant in some areas of China and other Asian countries. AT is thought to have anticancer effects, but potential mechanisms remain unknown. To assess the anticancer properties of AT, we exposed prostate cancer cells to AT extracts and assessed cell proliferation and signaling pathways. An ethanol extract of AT was suspended in water followed by sequential extraction with petroleum ether, ethyl acetate and n-butanol. PC-3 cells were treated with different concentrations of each extract and cell viability was determined by the MTT and trypan blue exclusion assays. The ethyl acetate extract of the ethanol extract had a stronger inhibitory effect on growth and a stronger stimulatory effect on apoptosis than any of the other extracts. Mechanistic studies demonstrated that the ethyl acetate extract suppressed the transcriptional activity of NF-${\kappa}B$, increased the level of caspase-3, and decreased the levels of phospho-Erk1/2 and phospho-Akt. This is the first report on the anticancer activity of AT in cultured human prostate cancer cells. The results suggest that AT can provide a plant-based medicine for the treatment or prevention of prostate cancer.

Systemic Approaches Identify a Garlic-Derived Chemical, Z-ajoene, as a Glioblastoma Multiforme Cancer Stem Cell-Specific Targeting Agent

  • Jung, Yuchae;Park, Heejoo;Zhao, Hui-Yuan;Jeon, Raok;Ryu, Jae-Ha;Kim, Woo-Young
    • Molecules and Cells
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    • 제37권7호
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    • pp.547-553
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    • 2014
  • Glioblastoma multiforme (GBM) is one of the most common brain malignancies and has a very poor prognosis. Recent evidence suggests that the presence of cancer stem cells (CSC) in GBM and the rare CSC subpopulation that is resistant to chemotherapy may be responsible for the treatment failure and unfavorable prognosis of GBM. A garlic-derived compound, Z-ajoene, has shown a range of biological activities, including anti-proliferative effects on several cancers. Here, we demonstrated for the first time that Z-ajoene specifically inhibits the growth of the GBM CSC population. CSC sphere-forming inhibition was achieved at a concentration that did not exhibit a cytotoxic effect in regular cell culture conditions. The specificity of this inhibitory effect on the CSC population was confirmed by detecting CSC cell surface marker CD133 expression and biochemical marker ALDH activity. In addition, stem cell-related mRNA profiling and real-time PCR revealed the differential expression of CSC-specific genes, including Notch, Wnt, and Hedgehog, upon treatment with Z-ajoene. A proteomic approach, i.e., reverse-phase protein array (RPPA) and Western blot analysis, showed decreased SMAD4, p-AKT, 14.3.3 and FOXO3A expression. The protein interaction map (http://string-db.org/) of the identified molecules suggested that the AKT, ERK/p38 and $TGF{\beta}$ signaling pathways are key mediators of Z-ajoene's action, which affects the transcriptional network that includes FOXO3A. These biological and bioinformatic analyses collectively demonstrate that Z-ajoene is a potential candidate for the treatment of GBM by specifically targeting GBM CSCs. We also show how this systemic approach strengthens the identification of new therapeutic agents that target CSCs.

가미소풍산(加味消風散)이 염증 및 아토피피부염 동물병태에 미치는 영향 (Effect of Gami-sopungsan on Inflammation and DNCB-induced Dermatitis in NC/Nga in Mice)

  • 이해진;심부용;박지원;김동희
    • 동의생리병리학회지
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    • 제28권2호
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    • pp.146-153
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    • 2014
  • Gami-Sopungsan (GS) is one of the traditional korean remedy. We investigated the anti-inflammation and anti-atopic dermatitis (AD) effect of GS. No cytotoxicity of GS was observed in the range of $1{\sim}100{\mu}g/m{\ell}$ on Raw 264.7 cells. The Inflammatory response of Raw 264.7 cells were induced by lipopolysaccharide (LPS), followed by GS treatment at indicated concentrations (0, 1, 10 and $100{\mu}g/m{\ell}$). At $100{\mu}g/m{\ell}$ concentration, GS showed inhibitory effect on LPS-induced nitric oxide production by 20%. Production of IL-$1{\beta}$, IL-6 and TNF-${\alpha}$ was decreased by approximately 56%, 36% and 79%, respectively upon GS treatment at $100{\mu}g/m{\ell}$. 200 mg/kg of GS was orally administered to NC/Nga mice, where AD was induced by 1-chloro 2,4-dinitrobenzene. There were no significant difference between GS treated group and the control group on body weight and food intake changes during growth. The back skin of GS group showed decrease in erythema, pruritus, dry skin, edema, excoriation, erosion and lichenification level through naked eye observations. In addition, leukocyte infiltration and the thickness of epidermis were significantly decreased in the skin tissues (back and ear). The serum IgE levels were decreased by 28.8% in the GS treated group. The GS treated group showed remarkable inhibition of IL-4 (83%), IL-5 (95%), IL-6 (62%) and TNF-${\alpha}$ (84%) in serum, indicating that GS has similar or higher efficacy than those of the dexamethasone treated group. From the results above, we conclude that GS has significant anti-inflammation and anti-AD effects on Raw 264.7 cells and NC/Nga mice. The results should provide fundamental and valuable data for the research on natural products being developed against atopic dermatitis.

쑥 추출물의 기능성과 쑥국수의 품질특성 (Functional Properties of Mugwort Extracts and Quality Characteristics of Noodles Added Mugwort Powder)

  • 박찬성;김미림
    • 한국식품저장유통학회지
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    • 제13권2호
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    • pp.161-167
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    • 2006
  • 본 연구는 품질 특성과 기능성을 가진 국수를 개발하기 위하여 쑥 분말을 물과 70% 에탄올로 추출하여 추출물의 전자공여능, 아질산염 소거능, 항암활성과 쪽을 첨가한 쑥국수의 품질특성을 검토하였다. 쑥 추출물의 전자공여능은 물 및 에탄올 추출물 모두에서 농도가 증가함에 따라 전자공여능도 증가하였으며 $100{\sim}1,000ppm$에서 물 추출물은 $73{\sim}81%$, 에탄올 추출물은 $74{\sim}92%$로 우수한 항산화능을 나타내었다. 추출물의 아질산염 소거능은 물 및 에탄올 추출물 모두에서 pH가 낮아짐에 따라 증가하여 pH 1.2에서 가장 높았고 동일 pH에서는 농도가 높아짐에 따라 증가하였다. 쪽의 물과 에탄올 추출물 1,000 ppm의 유방암세포 (MDA cell)에 대한 증식 억제율은 각각 30, 27% 였으며 폐암세포(A549 cell)에 대한 증식 억제율은 각각 22, 23% 였다. 쑥을 첨가한 국수 생면을 $5^{\circ}C$에서 4주일간 저장하였을때 쪽 첨가량이 증가할 수록 총균수 및 진균수는 낮았으며 쑥 첨가에 의하여 국수의 저장성이 향상되었다. 쑥국수의 색도 측정 결과 명도(L)와 적색도(a)는 건면과 삶은 면 모두 쑥 첨가량이 증가 할수록 감소하였다(p<0.05). 쑥국수의 관능검사 결과, 건면은 뒷맛을 제외한 나머지 기호도에서 2% 첨가 국수가 가장 높은 점수를 얻었으며 삶은 면은 쓴맛을 제외한 나머지 항목에서 2% 첨가 국수가 가장 높은 기호도를 나타내어 쑥국수 제조시에 쑥의 최적 첨가농도는 2%가 바람직할 것으로 판단된다.

Anti-Proliferative Activity of OD78 Is Mediated through Cell Cycle Progression by Upregulation p27kip1 in Rat Aortic Vascular Smooth Muscle Cells

  • Tudev, Munkhtsetseg;Lim, Yong;Park, Eun-Seok;Kim, Won-Sik;Lim, Il-Ho;Kwak, Jae-Hwan;Jung, Jae-Kyung;Hong, Jin-Tae;Yoo, Hwan-Soo;Lee, Mi-Yea;Pyo, Myoung-Yun;Yun, Yeo-Pyo
    • Biomolecules & Therapeutics
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    • 제19권2호
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    • pp.187-194
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    • 2011
  • Atherosclerosis and post-angiography restenosis are associated with intimal thickening and concomitant vascular smooth muscle cell (VSMC) proliferation. Obovatol, a major biphenolic component isolated from the Magnolia obovata leaf, is known to have anti-inflammatory and anti-tumor activities. The goal of the present study was to enhance the inhibitory effects of obovatol to improve its potential as a preventive or therapeutic agent in atherosclerosis and restenosis. Platelet-derived growth factor (PDGF)-BB-induced proliferation of rat aortic smooth muscle cells (RASMCs) was examined in the presence or absence of a newly synthesized obovatol derivative, OD78. The observed anti-proliferative effect of OD78 was further investigated by cell counting and [$^3H$]-thymidine incorporation assays. Treatment with 1-4 ${\mu}M$ OD78 dose-dependently inhibited the proliferation and DNA synthesis of 25 ng/ml PDGF-BB-stimulated RASMCs. Accordingly, OD78 blocked PDGF-BB-induced progression from the $G_0/G_1$ to S phase of the cell cycle in synchronized cells. OD78 decreased the expression levels of CDK4, cyclin E, and cyclin D1 proteins, as well as the phosphorylation of retinoblastoma protein and proliferating cell nuclear antigen; however, it did not change the CDK2 expression level. In addition, OD78 inhibited downregulation of the cyclin-dependent kinase inhibitor (CKI) $p27^{kip1}$. However, OD78 did not affect the CKI $p21^{cip1}$ or phosphorylation of early PDGF signaling pathway. These results suggest that OD78 may inhibit PDGF-BB-induced RASMC proliferation by perturbing cell cycle progression, potentially through $p27^{kip1}$ pathway activation. Consequently, OD78 may be developed as a potential anti-proliferative agent for the treatment of atherosclerosis and angioplasty restenosis.

자일리톨 섭취에 따른 Streptococcus mutans의 글루칸 생성관련 유전자 발현 억제효과 (INHIBITION OF GLUCAN SYNTHESIS RELATED GENE EXPRESSION OF STREPTOCOCCUS MUTANS BY XYLITOL TREATMENT)

  • 김지혜;이영은;안상헌;최연희;남순현;송근배
    • 대한소아치과학회지
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    • 제36권4호
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    • pp.531-538
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    • 2009
  • 본 연구에서는 장기적인 자일리톨의 섭취가 Streptococcus mutans의 대표적인 독성인자 중 하나인 글루칸 생성에 미치는 영향을 알아보기 위하여 글루칸 합성효소인 glucosyltansferase의 mRNA 발현을 실시간 역전사 중합효소 연쇄반응을 통해 평가하여 다음과 같은 결과를 얻었다. 1. 24개월 동안 자일리톨껌을 섭취한 군에서 타액 내 Streptococcus mutans의 colony 수는 통계적으로 유의하게 감소하였다(p<0.05). 2. 비수용성 글루칸 합성에 관여하는 유전자인 gtfB, gtfC의 발현은 자일리톨껌을 섭취한 군에서 시간이 지남에 따라 유의 하게 감소하였다(p<0.05). 특히 gtfB의 발현은 12개월과 24개월째 대조군에 비하여 통계적으로 유의하게 낮았고, gtfC의 발현은 24개월째 대조군에 비하여 통계적으로 유의하게 낮았다(p<0.05). 3. 수용성 글루칸 합성에 관여하는 유전자인 gtfD의 발현 역시 자일리톨껌을 섭취한 군에서 시간이 지남에 따라 유의하게 감소하였다(p<0.05). 또한 gtfD의 발현은 12개월과 24개월째 대조군에 비하여 통계적으로 유의하게 낮았다(p<0.05). 이상의 결과들을 종합해 보았을 때, 자일리톨의 섭취는 구강 내 Streptococcus mutans의 글루칸 합성 관련 유전자들의 발현을 억제시킴으로써 Streptococcus mutans의 수적인 감소를 가져오는 것으로 생각된다.

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죽엽(솜대)의 항산화 성분 및 구강세균에 대한 항균 효과 (Antioxidative Components and Anti-Oralmicrobial Effect of Bamboo (Phyllostachys nigra var. henonis Stapf) Leaves)

  • 박경란;강성태;김민주;오희경
    • 한국식품영양과학회지
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    • 제45권9호
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    • pp.1265-1272
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    • 2016
  • 본 연구에서는 죽엽(솜대)의 항산화 성분을 조사하고 구강질환 세균에 대한 죽엽 추출물의 항균 활성을 검토하였다. 죽엽의 일반성분은 탄수화물 76.26%, 조회분 10.61%, 조단백질 5.10%, 수분 6.30%, 조지방 1.73%였고, 비타민 A 및 E의 함량에 비하여 비타민 C 함량은 월등히 높게 나타났다. 유기산 중 citric acid 함량이 가장 많이 함유되어 있었고 다음으로 succinic acid, malic acid, acetic acid, formic acid 순으로 검출되었다. 총 폴리페놀 및 플라보노이드 함량은 각각 21.66 mg/g, 42.78 mg/g으로 나타났다. Streptococcus mutans에 대해 죽엽 추출물 0.04% 이상에서, Streptococcus sobrinus에 대해서는 0.16% 이상에서, Porphyromonas gingivalis와 Prevotella intermedia에 대해서는 0.02% 이상에서 강한 항균 활성이 인정되었다. S. mutans, S. sobrinus, P. gingivalis, P. intermedia는 죽엽추출물 0.32% 농도에서 각각 60시간까지 억제됨을 관찰할 수 있었다. 따라서 본 연구 결과는 죽엽 에탄올 추출물이 구강질환을 유발하는 세균에 대하여 우수한 항균작용을 나타내고 있으며, 따라서 죽엽이 구강질환 예방에 긍정적인 효과가 있을 것으로 생각한다.

Effects of Rapamycin on Cell Apoptosis in MCF-7 Human Breast Cancer Cells

  • Tengku Din, Tengku Ahmad Damitri Al-Astani;Seeni, Azman;Khairi, Wirdatul-Nur Mohd;Shamsuddin, Shaharum;Jaafar, Hasnan
    • Asian Pacific Journal of Cancer Prevention
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    • 제15권24호
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    • pp.10659-10663
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    • 2015
  • Background: Rapamycin is an effective anti-angiogenic drug. However, the mode of its action remains unclear. Therefore, in this study, we aimed to elucidate the antitumor mechanism of rapamycin, hypothetically via apoptotic promotion, using MCF-7 breast cancer cells. Materials and Methods: MCF-7 cells were plated at a density of $1{\times}10^5$ cells/well in 6-well plates. After 24h, cells were treated with a series of concentrations of rapamycin while only adding DMEM medium with PEG for the control regiment and grown at $37^{\circ}C$, 5% $CO_2$ and 95% air for 72h. Trypan blue was used to determine the cell viability and proliferation. Untreated and rapamycin-treated MCF-7 cells were also examined for morphological changes with an inverted-phase contrast microscope. Alteration in cell morphology was ascertained, along with a stage in the cell cycle and proliferation. In addition, cytotoxicity testing was performed using normal mouse breast mammary pads. Results: Our results clearly showed that rapamycin exhibited inhibitory activity on MCF-7 cell lines. The $IC_{50}$ value of rapamycin on the MCF-7 cells was determined as $0.4{\mu}g/ml$ (p<0.05). Direct observation by inverted microscopy demonstrated that the MCF-7 cells treated with rapamycin showed characteristic features of apoptosis including cell shrinkage, vascularization and autophagy. Cells underwent early apoptosis up to 24% after 72h. Analysis of the cell cycle showed an increase in the G0G1 phase cell population and a corresponding decrease in the S and G2M phase populations, from 81.5% to 91.3% and 17.3% to 7.9%, respectively. Conclusions: This study demonstrated that rapamycin may potentially act as an anti-cancer agent via the inhibition of growth with some morphological changes of the MCF-7 cancer cells, arrest cell cycle progression at G0/G1 phase and induction of apoptosis in late stage of apoptosis. Further studies are needed to further characterize the mode of action of rapamycin as an anti-cancer agent.