• Title/Summary/Keyword: farnesyl protein transferase (FPTase)

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Biological Activities of Sesquiterpene Lactones isolated from Several Compositae Plants. Part 2 -FPTase Inhibitory Activity- (수종의 국화과 식물에서 분리한 Sesquiterpene Lactone들의 생리활성(제2보) -FPTase 저해활성-)

  • Jang, Dae-Sik;Kwon, Byong-Mog;Yang, Min-Suk
    • Korean Journal of Pharmacognosy
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    • v.30 no.1
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    • pp.70-73
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    • 1999
  • Nine sesquiterpene lactones, which were isolated from Hemisteptia lyrata Bunge. Chrysanthemum zawadskii Herbich var. latilobum Kitamura and Chrysanthemum boreale Makino were evaluated for the farnesyl-protein transferase (FPTase) inhibitor, conducted by the scintillation proximity assay (SPA). The angeloylcumambrin B and tigloylcumambrin B inhibited a recombinant rat FPTase with $IC_{50}$ value of $78\;{\mu}g/ml$ $(225\;{\mu}M)$ and $90\;{\mu}g/ml$ $(260 \;{\mu}M)$, respectively.

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Effects of Polyacetylenes in Ginseng on Activity of Enzymes Related to Post-translational Modification of Ras Protein and Effects of Petroleum Ether Extract of Ginseng on Progression of Cell Cycle (인삼의 polyacetylene 계 성분이 Ras 단백질 변형 효소의 활성에 미치는 영향과 인삼의 석유에텔 추출물이 세포주기에 미치는 영향)

  • 김동청;이지영;인만진;채희정;황윤경;황우익
    • Journal of Ginseng Research
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    • v.25 no.4
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    • pp.156-161
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    • 2001
  • We investigated the effects of polyacetylenes of ginseng on farnesyl protein transferase (FPTase) and carboxyl methyl transferase (CMTase) activities related to post-translational modification of Ras protein. We also investigated the effect of petroleum ether extract (PEE) of ginseng on progression of cell cycle. FPTase activity was respectively inhibited 16.2% by 10mM panaxynol and 21.3% by 10mM panaxydol, whereas CMTase activity was not inhibited by panaxynol or panaxydol. Treatment of PEE significantly reduced the numbers and size of human colon cancer cell (HT-29) and human liver cancer cell(HepG2) cultured, respectively. To investigate the mechanism of growth inhibition by PEE of ginseng, we analyzed the cell cycle progressions of PT-29 and HepG2 cells, respectively. We found that PEE significantly inhibited progression of cell cycle from G1 to S phase. These results suggest that anticancer effects of PEE were derived from the arrest of G1 phase in cell cycle progression.

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F93-A: A Inhibitor of Farnesyl Protein Transferase from Aspergillus fumigatus KL93

  • Kwon, Byoung-Mog;Lee, Seung-Ho;Jeong, Tae-Sook;Kim, Sung-Uk;Son, Kwang-Hee;Park, Diol;Kim, Young-Kook;Nam, Ji-Youn;Bok, Song-Hae
    • Proceedings of the Korean Society of Applied Pharmacology
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    • 1995.04a
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    • pp.66-66
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    • 1995
  • Mutated forms of the ras oncogenes are associated with about 30% of human tumors. The ras genes encode 21KDa proteins, called p21 or Ras, that are associated with the plasma membrane. FPTase is a dimeric enzyme that catalyses the transfer of the farnesyl group from farnesyl pyrophosphate onto cysteine 186 at the C-terminus of the Ras protein. This is mandatory process for triggering ras oncogene toward tumor formation. Therefore, selective inhibitors of FPTase have the potential to be used as antitumorgenic agents.

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3D QSAR Studies on Cinnamaldehyde Analogues as Farnesyl Protein Transferase Inhibitors

  • Nack-Do, Sung;Cho, Young-Kwon;Kwon, Byoung-Mog;Hyun, Kwan-Hoon;Kim, Chang-Kyung
    • Archives of Pharmacal Research
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    • v.27 no.10
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    • pp.1001-1008
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    • 2004
  • Three-dimensional quantitative structure-activity relationship (3D-QSAR) studies on 59 cinnamaldehyde analogues as Farnesyl Protein Transferase (FPTase) inhibitors were investigated using comparative molecular field analysis (CoMFA) with the PLS region-focusing method. Forty-nine training set inhibitors were used for CoMFA with two different grid spacings, $2{\AA}\;and\;1{\AA}$ Ten compounds, which were not used in model generation, were used to validate the CoMFA models. After the PLS analysis, the best predictive CoMFA model showed that the cross-validated value $(r^2_{cv})$ and the non-cross validated conventional value$(r^2_{ncv})$ are 0.557 and 0.950, respectively. From the CoMFA contour maps, the steric and electrostatic properties of cinnamaldehyde analogues can be identified and verified.

The Cytotoxicity of 1,3-diphenylpropenone derivatives (1,3-diphenylpropenone 유도체의 세포독성)

  • Yu, Seong-Jae;Kwon, Byung-Mok;Lee, Chong-Ock;Choi, Sang-Un;Sung, Nack-Do
    • Applied Biological Chemistry
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    • v.42 no.1
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    • pp.68-72
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    • 1999
  • The cytotoxicity of 1,3-diphenylpropenone derivatives known to inhibit the farnesyl protein transferase (FPTase) was examined against various established tumor cell line, A549 (lung cancer), SKMEL-2 (uterine cancer), HCT-15 (skin cancer), SKOV-3 (brain cancer) and XF-498 (colon cancer) of the 1,3-diphenylpropenone derivatives showing farnesyl protein transferase (FPTase) inhibition activity. And the structure-activity relationship (SAR) between structure of 1,3-diphenylpropenone derivatives as substrate and cytotoxicity was investigated by Free-Wilson analysis as well as Hansch method with tumor cell lines. From the result of Free-Wilson analyses, X-substituents on the benzoyl group have a more important role than Y-substituents on the styryl group. The 2,4-dichloro substituent, 15 and 2,4-dimethyl substituent, 16 showed the highest cytotoxicity (average pI_(50)=5.0). Particulary, the cytotoxicity of X-substituents increased with electronic effect $({\sigma})$ due to weak electron withdrawing group with optimum value $({\sigma}_{opt}=0.22{\sim}0.29})$ whereas that of Y-substituent resulted from various factors such as logP, $B_1$ and R constant.

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Glycerides from the Aerial Parts of Garland (Chrysanthemum coronarium L.) and Their Inhibitory Effects on ACAT, DGAT, FPTase, and $\beta$-Secretase

  • Song, Myoung-Chong;Yang, Hye-Joung;Cho, Jin-Gyeong;Chung, In-Sik;Kwon, Byoung-Mog;Kim, Dae-Keun;Baek, Nam-In
    • Food Science and Biotechnology
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    • v.18 no.1
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    • pp.95-102
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    • 2009
  • The aerial parts of garland (Chrysanthemum coronarium L.) were extracted in 80% aqueous methanol (MeOH) and the concentrated extract was then partitioned using ethyl acetate (EtOAc), n-butanol (n-BuOH), and $H_2O$, successively. EtOAc and n-BuOH fractions resulted in 4 glycerides with the application of octadecyl silica gel and silica gel column chromatography. The chemical structures of the glycerides were determined using several spectroscopic methods, including nuclear magnetic resonance (NMR) and mass spectrometry (MS) as (2S)-1-O-palmitoyl-sn-glycerol (1), (2S)-1-O-oleoyl-2-O-oleoyl- 3-O-$\beta$-D-galactopyranosyl-sn-glycerol (2), (2S)-1-O-palmitoyl-2-O-linoleoyl-3-O-phosphorouscholine-sn-glycerol (3), and (2S)-1-O-linolenoyl-2-O-palmitoyl-3-O-[$\alpha$-D-galactopyrasyl-($1{\rightarrow}6$)-$\beta$-D-galactopyranosyl]-sn-glycerol (4). The free fatty acids of these glycerides were determined with gas chromatography (GC)-MS analysis following alkaline hydrolysis and methylation. These glycerides demonstrated an inhibitory effect on acyl-CoA: cholesterol acyltransferase (ACAT, compound 1: $45.6{\pm}0.2%$ at $100{\mu}g/mL$), diacylglycerol acyltransferase (DGAT, compound 1: $59.1{\pm}0.1%$ at $25{\mu}g/mL$), farnesyl protein transferase (FPTase, compound 2: $98.0{\pm}0.1%$; compound 3: $55.2{\pm}0.1%$ at $100{\mu}g/mL$), and $\beta$-secretase ($IC_{50}$, compound 4: $2.6{\mu}g/mL$) activity. This paper is the first report on the isolation of these glycerides from garland and their inhibitory activity on ACAT, DGAT, FPTase, and $\beta$-secretase.

Isolation and Characterization of Constituent Compounds from Leaves and Stems of Chrysanthemum boreale Makino (산국 잎과 줄기의 유효성분 분리 및 특성 연구)

  • Park, Sook Jahr;Park, Moon Ki;Lee, Jong Rok
    • Journal of Environmental Science International
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    • v.28 no.11
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    • pp.993-1004
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    • 2019
  • Chrysanthemum boreale Makino (C. boreale) is widely distributed in Asian countries, and has traditionally been used to treat various inflammatory diseases including bronchitis. In this study, we aimed to isolate biologically active compounds from leaves and stems of C. boreale. Chemical components were purified by column chromatograpy and recyclic HPLC, and characterized from their spectral data (IR, MS, NMR). Biological activity experiments were conducted for Farnesyl-protein transferase (FPTase) activity, apoptosis and nitirc oxide (NO) release. As a results, three sesquiterpene lactones were isolated. Compound 1 (4-methoxy-8-O-acetyl-10-hydroxy-2,11(13)-guaiadiene-12,6-olide) showed strong cytotoxic activities having an average growth inhibition of 50% ($GI_{50}$) value of $1.89{\mu}g/m{\ell}$ against human colon adenocarcinoma cells. Compound 1 also showed a low half maximal inhibitory concentration ($IC_{50}$) value of $10{\mu}g/m{\ell}$ for NO release. In the caspase 3 activity, compound 1 and compound 2 (8-O-(2-carbonyl-2-butyl)-3,10-dihydroxy-4,11(13) -guaiadiene-12,6-olide) exhibited 94% and 90% apoptosis inhibition activity, respectively. Compound 3 (4,8-O-diacetyl -10-hydroxy-2(3),11(13)-guaiadiene-12,6-olide) showed a strong inhibitory effect on FPTase activity with 90% inhibitory activity at a concentration of $100{\mu}g/m{\ell}$. These results clearly show the presence of lactone compounds in the leaves and stems, which may partially contribute to the pharmacological activity of C. boreale.

Characteristic Stereostructures and Regioselectivity of Biogenic Pathway of FPTase Inhibition Materials Isolated from Artemisia sylvatica (그늘쑥(Artemisia sylvatica Max.)으로부터 분리된 FPTase 저해활성 물질들의 구조적인 특성과 biogenic pathway의 배향성)

  • Kwon, Byung-Mok;Sung, Nack-Do
    • Applied Biological Chemistry
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    • v.45 no.4
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    • pp.223-227
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    • 2002
  • Characteristic stereostructures of farnesyl protein transferase (FPTase) inhibition materials isolated from Artemisia sylvatica and regioselectivity of biogenic Diels-Alder reactions between dehydromatricarin molecules A and B were examined quantitatively. Results revealed that the major reaction of frontier molecular orbital (FMO) interaction proceeds through charge-control reaction between LUMO of A16, dienophile and HOMO of B1, diene, and the isolated 8-acetylarteminolide and artanomaloide were minor products. FPTase inhibition activity and hydrophobicity of 8-acetylarteminolide were $pI_{50}=3.75$ and logP=2.62, respectively. FPTase inhibition activity of 8-acetylarteminolide was higher than those of artanomaloide and dehydromatricarin.

Synthesis and Ligand Based 3D-QSAR of 2,3-Bis-benzylidenesuccinaldehyde Derivatives as New Class Potent FPTase Inhibitor, and Prediction of Active Molecules

  • Soung, Min-Gyu;Kim, Jong-Han;Kwon, Byoung-Mog;Sung, Nack-Do
    • Bulletin of the Korean Chemical Society
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    • v.31 no.5
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    • pp.1355-1360
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    • 2010
  • In order to search new inhibitors against farnesyl protein transferase (FPTase), a series of 2,3-bis-benzylidenesuccinaldehyde derivatives (1-29) were synthesized and their inhibition activities ($pI_{50}$) against FPTase were measured. From based on the reported results that the inhibitory activities of dimers 2,3-bis-benzylidenesuccinaldehydes were higher than those of monomers cinnamaldehydes, 3D-QSARs on FPTase inhibitory activities of the dimers (1-29) were studied quantitatively using comparative molecular field analysis (CoMFA) and comparative molecular similarity indices analysis (CoMSIA) methods. The statistical qualities of the optimized CoMFA model II ($r^2{_{cv.}}$= 0.693 and $r^2{_{ncv.}}$= 0.974) was higher than those of the CoMSIA model II ($r^2{_{cv.}}$ = 0.484 and $r^2{_{ncv.}}$ = 0.928). The dependence of CoMFA models on chance correlations was evaluated with progressive scrambling analyses. And the inhibitory activity exhibited a strong correlation with steric factors of the substrate molecules. Therefore, from the results of graphical analyses on the contour maps and of predicted higher inhibitory active compounds, it is suggested that the structural distinctions and descriptors that contribute to inhibitory activities ($pI_{50}$) against FPTase will be able to applied new inhibitor design.

Structural Analysis and Biological Activities of Sesquiterpene Lactones Isolated from the Leaves and Stems of Chrysanthemum boreale Makino (산국의 잎과 줄기에서 분리한 Sesquiterpene Lactone들의 구조규명 및 생리활성)

  • Lee, Jong Rok;Park, Moon Ki
    • Journal of Environmental Science International
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    • v.26 no.11
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    • pp.1285-1295
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    • 2017
  • Chrysanthemum boreale Makino is widely distributed in Korea, China, Japan and Southeast Asian countries. C. boreale is one of the herbs used for treating various inflammatory diseases in oriental medicine. The present study was conducted to identify biologically active compounds from the leaves and stems of C. boreale. We isolated two sesquiterpene sactones from the leaves and stems of C. boreale using silica gel column chromatography and recyclic high perfomance liquid chromatography. The lactones were characterized by their spectroscopic data (NMR, IR, MASS). These compounds were subjected to Farnesyl Protein Transferase (FPTase) inhibition, Nitric Oxide (NO) release inhibition and apoptosis inhibition. The structur of the following isolated compound were elucidated 8,10-${\small{O}$-Acetyl-2-methoxy-10-hydroxy-3,11(13)-guaiadiene-12,6-olide and 4,10-dihydroxy-8-${\small{O}$-Acetyl-2,11(13)-guaiadiene-12,6-olide. In the NO release inhibition assay, compound 2 showed strong activities, with an $IC_{50}$ value of $7{\mu}g/mL$, whereas compound 1 did not exhibit significant activity with an $IC_{50}$ value of over $14{\mu}g/mL$ against murine macrophage.