共查询到20条相似文献,搜索用时 375 毫秒
1.
Tyler A. Johnson Johann Sohn Aidan E. Ward Tanya L. Cohen Nicholas D. Lorig-Roach Haixia Chen Ronaldo A. Pilli Elizabeth A. Widjaja Muhammad Hanafi Leonardus B.S. Kardono Puspa D. Lotulung Kyria Boundy-Mills Leonard F. Bjeldanes 《Bioorganic & medicinal chemistry》2013,21(14):4358-4364
An evaluation of Indonesian plants to identify compounds with immune modulating activity revealed that the methanolic extract of an Alphonsea javanica Scheff specimen possessed selective anti-inflammatory activity in a nuclear factor-kappa B (NF-κB) luciferase and MTT assay using transfected macrophage immune (Raw264.7) cells. A high-throughput LC/MS-ELSD based library approach of the extract in combination with the NF-κB and MTT assays revealed the styryl lactone (+)-altholactone (2) was responsible for the activity. Compound 2, its acetylated derivate (+)-3-O-acetylaltholactone (3), and the major compound of this class, (+)-goniothalmin (1), were further evaluated to determine their anti-inflammatory potential in the NF-κB assay. Concentration–response studies of 1–3 indicated that only 2 possessed NF-κB based anti-inflammatory activity. Compound 2 reduced the LPS-induced NO production, phosphorylation of IκBα, and the expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) using Western blot analysis. Further studies using qPCR indicated 2 reduced the expression of eight pro-inflammatory cytokines/enzymes (0.8–5.0 μM) which included: COX-2, iNOS, IP-10, IL-1β, MCP-1, GCS-F, IL-6 and IFN-β. These results indicated that 2 displays broad spectrum immune modulating activity by functioning as an anti-inflammatory agent against LPS-induced NF-κB signaling. Conversely the selective cytotoxicity and in vivo anti-tumor and anti-inflammatory activity previously reported for 1 do not appear to arise from a mechanism that is linked to the NF-κB immune mediated pathway. 相似文献
2.
Tran Manh Hung Nguyen Hai Dang Jin Cheol Kim Jae Sue Choi Hyeong Kyu Lee Byung-Sun Min 《Bioorganic & medicinal chemistry letters》2009,19(15):4389-4393
Three new phenolic glycosides, salviifosides A?C (13), and three known compounds salicin (4), kaempferol (5), and kaempferol 3-O-β-d-glucopyranoside (6) were isolated from the leaves of Alangium salviifolium (L.f.) Wangerin (Alangiaceae). The structures of the new metabolites were determined on the basic of spectroscopic analyses including two dimensional NMR. The anti-inflammatory activities of new compounds (1?3) were investigated on lipopolysaccharide (LPS)-induced murine macrophage cells line, RAW 264.7. Salviifoside B (2) potentially inhibits the productions of nitric oxide (NO), prostaglandin E2 (PGE2), and tumor necrosis factor-α (TNF-α). 相似文献
3.
Jian-Hong Yang Tamara P. Kondratyuk Laura E. Marler Xi Qiu Yongsoo Choi Hongmei Cao Rui Yu Megan Sturdy Scott Pegan Ying Liu Li-Qin Wang Andrew D. Mesecar Richard B. Van Breemen John M. Pezzuto Harry H.S. Fong Ye-Gao Chen Hong-Jie Zhang 《Phytochemistry》2010,71(5-6):641-647
Kaempferol glycosides, named palmatosides A (1), B (2) and C (3), together with three known kaempferol glycosides, multiflorins A (4) and B (5), and afzelin (6), were isolated from the roots of the fern Neocheiropteris palmatopedata. Palmatosides A (1) and B (2) each possessed an unusual sugar moiety containing a 4,4-dimethyl-3-oxo-butoxy substituent group. The isolated compounds were evaluated for their cancer chemopreventive potential based on their ability to inhibit tumor necrosis factor alpha (TNF-α)-induced NF-κB activity, nitric oxide (NO) production, aromatase, quinone reductase 2 (QR2) and COX-1/-2 activities. Palmatosides B (2) and C (3) inhibited TNF-α-induced NF-κB activity with IC50 values of 15.7 and 24.1 μM, respectively; multiflorin A (4) inhibited aromatase enzyme with an IC50 value of 15.5 μM; afzelin (6) showed 68.3% inhibition against QR2 at a concentration of 11.5 μg/ml; palmatoside A (1) showed 52% inhibition against COX-1 enzyme at a concentration of 10 μg/ml; and multiflorin B (5) showed 52% inhibition against nitric oxide production at a concentration of 20 μg/ml. In addition, compounds 3–6 were shown to bind QR2 enzyme using LC–MS ultrafiltration binding assay. 相似文献
4.
Chi-Su Yoon Kwan-Woo Kim Sang-Chan Lee Youn-Chul Kim Hyuncheol Oh 《Bioorganic & medicinal chemistry letters》2018,28(2):140-144
Two new nardosinone-type sesquiterpenoids, namely kanshone J (1) and kanshone K (2) along with seven known terpenoids (3–9) were isolated from the rhizomes and roots of Nardostachys jatamansi DC (Valerianaceae). The structures of these compounds were determined mainly by analysis of 1D-, 2D-NMR and MS data. In addition, the absolute configuration of compound 1 was assigned by application of the modified Mosher’s method. In an initial assay to evaluate their anti-neuroinflammatory effects, compounds 1–5 and 9 exhibited dose-dependent inhibitory effects on lipopolysaccharide (LPS)-induced nitric oxide (NO) production in BV2 cells, with IC50 values ranging from 2.43 to 46.54?μM. Particularly, desoxo-narchinol A (3) and narchinol B (4) significantly inhibited LPS-induced NO overproduction in BV2 cells with IC50 values of 3.48?±?0.47 and 2.43?±?0.23?μM, respectively. Furthermore, compounds 3 and 4 exhibited anti-neuroinflammatory effects by inhibiting the production of pro-inflammatory mediators, including prostaglandin E2 (PGE2), inducible nitric oxide synthase (iNOS), and cyclooxygenase-2 (COX-2) proteins, and pro-inflammatory cytokines, such as interleukin (IL)-1β, IL-6, and tumor necrosis factor-α (TNF)-α, in LPS-stimulated BV2 and primary microglial cells. 相似文献
5.
Poria cocos Wolf (Polyporaceae) has been used as a medicinal fungus to treat various diseases since ancient times. This study aimed to investigate the anti-inflammatory chemical constituents of the sclerotia of P. cocos. Based on bioassay-guided fractionation using lipopolysaccharide (LPS)-stimulated Raw264.7 cells, chemical investigation of the EtOH extract of the sclerotia of P. cocos resulted in the isolation and identification of eight compounds including six triterpenoids, namely poricoic acid A (1), 3-O-acetyl-16α-hydroxydehydrotrametenolic acid (2), polyporenic acid C (3), 3β-hydroxylanosta-7,9(11),24-trien-21-oic acid (4), trametenolic acid (5), and dehydroeburicoic acid (6), as well as (−)-pinoresinol (7) and protocatechualdehyde (8). The structures of the isolated compounds were determined by spectroscopic analysis, including 1H and 13C NMR spectra, and LC/MS analysis. The anti-inflammatory activities of the isolates were evaluated by estimating their effect on the production of nitric oxide (NO) and prostaglandin E2 (PGE2) in LPS-stimulated Raw264.7 as well as on the expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). Compounds 1–5 inhibited NO production and iNOS expression in LPS-stimulated Raw264.7 cells. Among them, compound 1 exerted the highest anti-inhibitory activity and reduced PGE2 levels via downregulation of COX-2 protein expression. The findings of this study provide experimental evidence that the sclerotia of P. cocos are a potential source of natural anti-inflammatory agents for use in pharmaceuticals and functional foods. Furthermore, the most active compound 1, seco-lanostane triterpenoid, could be a promising lead compound for the development of novel anti-inflammatory agents. 相似文献
6.
Chung Sub Kim Sun Yeou Kim Eunjung Moon Mi Kyeong Lee Kang Ro Lee 《Bioorganic & medicinal chemistry letters》2013,23(6):1771-1775
Hosta longipes (FR. et SAV.) MATSUMURA (Liliaceae) is an edible vegetable in Korea. This study was conducted with the aim of evaluating the potential of H. longipes as a functional food for the treatment of neurodegenerative diseases such as Alzheimer’s disease and Parkinson’s disease. In this respect, the study resulted in the identification of three new steroidal compounds, longipenane (1), longipenane 26-O-β-d-glucopyranoside (2) and neogitogenin 3-O-α-l-rhamnopyranosyl-(1→2)-O-[β-d-glucopyranosyl-(1→4)]-β-d-galactopyranoside (3), along with two known steroidal saponins (4 and 5). The identification and structural elucidation of these compounds were based on 1D and 2D NMR measurements, high-resolution FAB mass spectroscopy (HR-FAB-MS), and chemical methods. A proinflammatory mediator, nitric oxide (NO), in murine microglial BV-2 cells was used to assess the anti-neuroinflammatory effect of the isolated compounds from H. longipes. Among them, compounds 4 and 5 showed strong inhibitory effects on NO production without high cell toxicity in lipopolysaccharide-activated BV-2 cells (IC50 = 17.66 and 13.16 μM, respectively). 相似文献
7.
8.
Camila Ferreira Bannwart Erika Nakaira-Takahagi Marjorie Assis Golim Leonardo Teixeira Lopes de Medeiros Mariana Romão Ingrid Cristina Weel Maria Terezinha Serrão Peraçoli 《Life sciences》2010,86(23-24):880-886
AimsSilibinin is the major active component of silymarin, a polyphenolic plant flavonoid that has anti-inflammatory effects. The modulatory effect of silibinin on monocyte function against Paracoccidioides brasiliensis (Pb18) has not yet been demonstrated. The present study investigated whether the effect of silibinin on nuclear factor-kappa B (NF-κB) pathways may affect the production of tumor necrosis factor-alpha (TNF-α), interleukin-10 (IL-10), transforming growth factor beta (TGF-β1), prostaglandin E2 (PGE2), nitric oxide (NO) and fungicidal activity of human monocytes challenged in vitro with Pb18.Main methodsPeripheral blood monocytes from healthy individuals were treated with silibinin and challenged with Pb18 for 18 h. TNF-α, IL-10, TGF-β1 and PGE2 expression were determined by immunoenzymatic assay (ELISA) and NO release was determined by the accumulation of nitrite in culture supernatants. Fungicidal activity of monocytes was analyzed after treatment with interferon-gamma plus silibinin and challenge with Pb18. NF-κB activation in cultured monocytes was evaluated by flow cytometry and ELISA.Key findingsSilibinin partially inhibited p65NF-κB activation as the number of cells expressing this factor was reduced and the concentration of nuclear p65NF-κB was low, compared to untreated controls. The addition of silibinin also resulted in suppression of TNF-α, IL-10, TGF-β1, PGE2 and NO production but did not affect the fungicidal activity of monocytes against Pb18.SignificanceSilibinin exerts anti-inflammatory and anti-fibrotic effects on CD14± human monocytes challenged by Pb18 by partial inhibition of p65NF-κB activation. 相似文献
9.
A pair of new sesquiterpene isomers containing a spiro heterocyclic skeleton, dothimes A (1) and B (2), together with six known compounds, quindoline (3), (S)-3-(3-indolyl)lactic acid methyl ester (4), dankasterone B (5), dibutyl phthalate (6), (1S,3R,4R,7S)-3,4-dihydroxy-α-bisabolol (7), and p-hydroxybenzaldehyde (8), were isolated from the plant-derived fungus Botryosphaeria dothidea. The structures of all isolated compounds were determined based on extensive spectroscopic analyses, including 1D/2D nuclear magnetic resonance (NMR), and high resolution electrospray ionization mass spectrometry (HRESIMS) data, as well as by comparison with literature reports. Compounds 1 and 2 exhibited inhibitory effects on lipopolysaccharide (LPS)-induced nitric oxide (NO) production with IC50 values of 63.66 and 58.29 μM, respectively. 相似文献
10.
In searching for naturally occurring anti-inflammatory agents, three new abietane-type diterpenoids, named 16-hydroxylambertic acid (1), 7-oxo-18-hydroxyferruginol (2), and 5α,12-dihydroxy-6-oxa-abieta-8,11,13-trien-7-one (3), were isolated from the seeds of Podocarpus nagi, together with three known compounds. The structures of the new compounds were elucidated by extensive analysis of NMR and HR-ESIMS data. All the new compounds were tested for nitric oxide (NO) inhibitory activities on lipopolysaccharide (LPS)-stimulated RAW264.7 cells. Compound 1 significantly inhibited NO production with IC50 value of 5.38 ± 0.17 μM, and suppressed inducible NO synthase (iNOS) expression in a dose-dependent manner, which were mediated through inhibiting the mitogen-activated protein kinases (MAPKs) and nuclear factor-κB (NF-κB) activation. 相似文献
11.
Analysis of chemical constituents from Polygonatum cyrtonema after “Nine-Steam-Nine-Bask” processing
Seven new compounds, known as polygonatine N1‒N7 (1‒7), and a known compound (8) were isolated from the ‘Nine-Steam-Nine-Bask’ processing product of Polygonatum cyrtonema Hua. The compounds’ structures were determined by spectroscopic analysis. All compounds were tested for dipeptidyl peptidase-4 (DPP-4) inhibition, glucose transport, and anti-inflammatory activities. Compound 8 suppressed NO production with an IC50 of 35.4 μM. 相似文献
12.
Two new acyl glycosides, angkorensides A and B (1 and 2) together with twelve known compounds including hedyotol C 7″-O-β-D-glucopyranoside (3), proanthocyanidin A-1 (4), (-)-epicatechin (5), (+)-lyoniresinol 3α-O-β-D-glucopyranoside (6), kaempferol-3-O-β-D-galactopyranoside (7), cuneataside E (8), 4-hydroxyacetophenone 4-O-(6′-O-β-D-apiofuranosyl)-β-D-glucopyranoside (9), cinnamtannin B-1 (10), aesculitannin B (11), quercetin 3-O-rham-(1−6)-β-D-galactopyranoside (12), quercetin 3-O-β-D-galactopyranoside (13), and proanthocyanidin A-2 (14) have been unprecedentedly isolated from Gardenia angkorensis Pit. Angkorensides A and B (1 and 2) showed moderate anti-inflammatory inhibitory effects on lipopolysaccharide (LPS)-induced nitric oxide (NO) production in RAW264.7 macrophages and the known compounds (4, 10-14) exhibited strong 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity. 相似文献
13.
Ji-Young An Hwi-Ho Lee Ji-Sun Shin Hyung-Seok Yoo Jong Seon Park Seung Hwan Son Sang Won Kim Jihyun Yu Jun Lee Kyung-Tae Lee Nam-Jung Kim 《Bioorganic & medicinal chemistry letters》2017,27(11):2613-2616
In an effort to identify novel anti-inflammatory compounds, a series of flavone derivatives were synthesized and biologically evaluated for their inhibitory effects on the production of nitric oxide (NO) and prostaglandin E2 (PGE2), representative pro-inflammatory mediators, in LPS-induced RAW 264.7 cells. Their structure-activity relationship was also investigated. In particular, we found that compound 3g displayed more potent inhibitory activities on PGE2 production, similar inhibitory activities on NO production and less weak cytotoxicity than luteolin, a natural flavone known as a potent anti-inflammatory agent. 相似文献
14.
《Bioorganic & medicinal chemistry letters》2020,30(4):126884
In this article, a series of 22 triarylpyrazole derivatives were evaluated for in vitro antiinflammatory activity as inhibitors of nitric oxide (NO) and prostaglandin E2 (PGE2) release induced by lipopolysaccharide (LPS) in murine RAW 264.7 macrophages. The synthesized compounds 1a-h, 2a-f and 3a-h were first examined for their cytotoxicity for determination of the non-toxic concentration for antiinflammatory screening, so that the inhibitory effects against NO and PGE2 production were not caused by non-specific cytotoxicity. Compounds 1h and 2f were the most active PGE2 inhibitors with IC50 values of 2.94 μM and 4.21 μM, respectively. Western blotting and cell-free COX-2 screening revealed that their effects were due to inhibition of COX-2 protein expression. Moreover, compound 1h exerted strong inhibitory effect on the expression of COX-2 mRNA in LPS-induced murine RAW 264.7 macrophages. 相似文献
15.
Nguyen Thi Huong Le Thi Vien Tran Thi Hong Hanh Nguyen Hai Dang Nguyen Van Thanh Nguyen Xuan Cuong Nguyen Hoai Nam Luu Hong Truong Ninh Khac Ban Phan Van Kiem Chau Van Minh 《Bioorganic & medicinal chemistry letters》2017,27(3):557-561
Two new triterpene saponins, camelliosides I and J (1 and 2), two new megastigmane glycosides, camellistigosides A and B (3 and 4), and two known megastigmane glycosides, icariside B1 (5) and (6S,9R)-roseoside (6), were isolated from a methanol extract of the Camellia bugiamapensis leaves using various chromatographic separation techniques. Their structures were elucidated based on spectroscopic analyses, including HR ESI MS, CD, 1D and 2D NMR. Their inhibitory effects on LPS-induced NO production in RAW264.7 cells were evaluated. This is the first report of the chemical constituents and biological activity of C. bugiamapensis. 相似文献
16.
《Bioorganic & medicinal chemistry letters》2014,24(16):3814-3818
The new series of pentacyclic triterpenoids reduced lantadene A (3), B (4), and 22β-hydroxy-3-oxo-olean-12-en-28-oic acid (5) analogs were synthesized and tested in vitro for their NF-κB and IKKβ inhibitory potencies and cytotoxicity against A549 lung cancer cells. The lead analog (11) showed sub-micromolar activity against TNF-α induced activation of NF-κB and exhibited inhibition of IKKβ in a single-digit micromolar dose. At the same time, 11 showed promising cytotoxicity against A549 lung cancer cells with IC50 of 0.98 μM. The Western blot analysis further showed that the suppression of NF-κB activity by the lead analog 11 was due to the inhibition of IκBα degradation, a natural inhibitor of NF-κB. The physicochemical evaluation demonstrated that the lead analog 11 was stable in the simulated gastric fluid of pH 2, while hydrolyzed at a relatively higher rate in the human blood plasma to release the active parent moieties. Molecular docking analysis showed that 11 was hydrogen bonded with the Arg-31 and Gln-110 residues of the IKKβ. 相似文献
17.
Yue Wang Hongfei Zhao Chuangxin Lin Jie Ren Shizhong Zhang 《Neurochemical research》2016,41(4):659-665
Inflammation and oxidative stress have been reported to play critical roles in the pathogenesis of neurodegenerative disease. Forsythiaside A, a phenylethanoside product isolated from air-dried fruits of Forsythia suspensa, has been reported to have anti-inflammatory and antioxidant effects. In this study, the anti-inflammatory effects of forsythiaside A on LPS-stimulated BV2 microglia cells and primary microglia cells were investigated. The production of inflammatory mediators TNF-α, IL-1β, NO and PGE2 were detected in this study. NF-κB, nuclear factor-erythroid 2-related factor 2 (Nrf2), heme oxygenase-1 (HO-1) expression were detected by western blot analysis. Our results showed that forsythiaside A significantly inhibited LPS-induced inflammatory mediators TNF-α, IL-1β, NO and PGE2 production. LPS-induced NF-κB activation was suppressed by forsythiaside A. Furthermore, forsythiaside A was found to up-regulate the expression of Nrf2 and HO-1. In conclusion, this study demonstrates that forsythiaside A inhibits LPS-induced inflammatory responses in BV2 microglia cells and primary microglia cells through inhibition of NF-κB activation and activation of Nrf2/HO-1 signaling pathway. 相似文献
18.
19.
20.
《Bioorganic & medicinal chemistry letters》2014,24(24):5787-5791
Chemical investigation of a marine-derived fungus Penicillium sp. SF-6013 resulted in the discovery of a new tanzawaic acid derivative, 2E,4Z-tanzawaic acid D (1), together with four known analogues, tanzawaic acids A (2) and D (3), a salt form of tanzawaic acid E (4), and tanzawaic acid B (5). Their structures were mainly determined by analysis of NMR and MS data, along with chemical methods. Preliminary screening for anti-inflammatory effects in lipopolysaccharide (LPS)-activated microglial BV-2 cells showed that compounds 1, 2, and 5 inhibited the production of nitric oxide (NO) with IC50 values of 37.8, 7.1, and 42.5 μM, respectively. Compound 2 also inhibited NO production in LPS-stimulated RAW264.7 murine macrophages with an IC50 value of 27.0 μM. Moreover, these inhibitory effects correlated with the suppressive effect of compound 2 on inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) expression in LPS-stimulated RAW264.7 and BV2 cells. In addition, compounds 2 and 5 significantly inhibited the activity of protein tyrosine phosphatase 1B (PTP1B) with the same IC50 value (8.2 μM). 相似文献