151
|
Wang XF, Guan F, Ohkoshi E, Guo W, Wang L, Zhu DQ, Wang SB, Wang LT, Hamel E, Yang D, Li L, Qian K, Morris-Natschke SL, Yuan S, Lee KH, Xie L. Optimization of 4-(N-cycloamino)phenylquinazolines as a novel class of tubulin-polymerization inhibitors targeting the colchicine site. J Med Chem 2014; 57:1390-402. [PMID: 24502232 PMCID: PMC3983391 DOI: 10.1021/jm4016526] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The 6-methoxy-1,2,3,4-tetrahydroquinoline moiety in prior leads 2-chloro- and 2-methyl-4-(6-methoxy-3,4-dihydroquinolin-1(2H)-yl)quinazoline (1a and 1b) was modified to produce 4-(N-cycloamino)quinazolines (4a-c and 5a-m). The new compounds were evaluated in cytotoxicity and tubulin inhibition assays, resulting in the discovery of new tubulin-polymerization inhibitors. 7-Methoxy-4-(2-methylquinazolin-4-yl)-3,4-dihydroquinoxalin- 2(1H)-one (5f), the most potent compound, exhibited high in vitro cytotoxic activity (GI50 1.9-3.2 nM), significant potency against tubulin assembly (IC50 0.77 μM), and substantial inhibition of colchicine binding (99% at 5 μM). In mechanism studies, 5f caused cell arrest in G2/M phase, disrupted microtubule formation, and competed mostly at the colchicine site on tubulin. Compound 5f and N-methylated analogue 5g were evaluated in nude mouse MCF7 xenograft models to validate their antitumor activity. Compound 5g displayed significant in vivo activity (tumor inhibitory rate 51%) at a dose of 4 mg/kg without obvious toxicity, whereas 5f unexpectedly resulted in toxicity and death at the same dose.
Collapse
Affiliation(s)
- Xiao-Feng Wang
- Beijing Institute of Pharmacology and Toxicology , 27 Tai-Ping Road, Beijing 100850, China
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
152
|
Gao LY, Liu XY, Chen CJ, Wang JC, Feng Q, Yu MZ, Ma XF, Pei XW, Niu YJ, Qiu C, Pang WH, Zhang Q. Core-Shell type lipid/rPAA-Chol polymer hybrid nanoparticles for in vivo siRNA delivery. Biomaterials 2014; 35:2066-78. [DOI: 10.1016/j.biomaterials.2013.11.046] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 11/18/2013] [Indexed: 11/26/2022]
|
153
|
de Oliveira Figueiredo P, Perdomo RT, Garcez FR, de Fatima Cepa Matos M, de Carvalho JE, Garcez WS. Further constituents of Galianthe thalictroides (Rubiaceae) and inhibition of DNA topoisomerases I and IIα by its cytotoxic β-carboline alkaloids. Bioorg Med Chem Lett 2014; 24:1358-61. [PMID: 24507920 DOI: 10.1016/j.bmcl.2014.01.039] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Accepted: 01/15/2014] [Indexed: 11/28/2022]
Abstract
A new cytotoxic β-carboline alkaloid, 1-methyl-3-(2-hydroxypropan-2-yl)-2-(5-methoxy-9H-β-carbolin-1-yl)-cyclopentanol (1), was isolated from roots of Galianthe thalictroides, together with the alkaloid 1-(hydroxymethyl)-3-(2-hydroxypropan-2-yl)-2-(5-methoxy-9H-β-carbolin-1-yl)-cyclopentanol (2), the anthraquinones 1-methyl-alizarin and morindaparvin-A, the coumarin scopoletin, homovanillic alcohol, (-)-epicatechin, and the steroids stigmast-4-en-3-one, 4,22-stigmastadien-3-one, campest-4-en-3-one, stigmast-4-en-3,6-dione, 6-β-hydroxy-stigmast-4-en-3-one, stigmasterol, campesterol, β-sitosterol, and β-sitosterol-3-O-β-D-glucopyranoside. Among the previously known compounds, homovanillic alcohol is a novel finding in Rubiaceae, while 1-methyl-alizarin, morindaparvin-A, scopoletin, stigmast-4-en-3-one, 4,22-stigmastadien-3-one, campest-4-en-3-one, stigmast-4-en-3,6-dione, and 6-β-hydroxy-stigmast-4-en-3-one is reported for the first time in the genus Galianthe. The cytotoxic β-carboline alkaloids 1 and 2 exhibited potent antitopoisomerase I and IIα activities and strong evidence is provided for their action as topoisomerase IIα poisons and redox-independent inhibitors.
Collapse
Affiliation(s)
| | - Renata Trentin Perdomo
- Centro de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS 79070-900, Brazil.
| | - Fernanda Rodrigues Garcez
- Instituto de Química, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS 79074-460, Brazil.
| | - Maria de Fatima Cepa Matos
- Centro de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS 79070-900, Brazil.
| | - João Ernesto de Carvalho
- Centro Pluridisciplinar de Pesquisas Químicas Biológicas e Agrícolas, Universidade Estadual de Campinas, Campinas, SP 13081-970, Brazil.
| | - Walmir Silva Garcez
- Instituto de Química, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS 79074-460, Brazil.
| |
Collapse
|
154
|
Sanchez PM, Villarreal ML, Herrera-Ruiz M, Zamilpa A, Jiménez-Ferrer E, Trejo-Tapia G. In vivo anti-inflammatory and anti-ulcerogenic activities of extracts from wild growing and in vitro plants of Castilleja tenuiflora Benth. (Orobanchaceae). JOURNAL OF ETHNOPHARMACOLOGY 2013; 150:1032-1037. [PMID: 24145005 DOI: 10.1016/j.jep.2013.10.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 09/13/2013] [Accepted: 10/02/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Castilleja tenuiflora Benth. (Orobanchaceae) is a perennial shrub used since the 16(th) century in Mexican traditional medicine for the treatment of a number of health disorders including inflammation, stomach pain and tumors. The aim of the present study was to evaluate the cytotoxic, anti-inflammatory and anti-ulcerogenic activities of ethyl acetate (EaE), methanol (ME) and aqueous extracts (AE) of Castilleja tenuiflora wild grown (CtW) and in vitro plants (CtIv). MATERIAL AND METHOD Phytochemical analysis of the phenylethanoid glycoside (PhG) and iridoid glycoside (IG) components was carried out by chromatographic methods. In vitro cytotoxic activity of the extracts was evaluated in the following four carcinoma cell lines: colon (HF-6), breast (MCF-7), prostate (PC-3), and nasopharyngeal (KB). The topical anti-inflammatory activity was evaluated in mouse ear edema induced by 12-O-tetradecanoylphorbol-13-acetate (TPA). Anti-ulcerogenic activity was evaluated in rats using an absolute ethanol-induced acute gastric ulcer model. RESULTS The main compounds in the extracts were isoverbascoside, verbascoside and aucubin and their concentration depended both on the solvent used and on the plant material origin. None of the extracts showed cytotoxicity against the tested cell lines. In contrast, CtWEaE, CtWAE and CtIvEaE (1.6 mg/ear) showed moderate anti-inflammatory activity similar to dexamethasone (1 mg/ear) with a 38.2, 39.3 and 49.1% decrease of inflammation, respectively. CtWEaE and CtIvEaE (100 mg/kg) showed high anti-ulcerogenic activity with 88.3 and 83.1% inhibition, respectively, compared to famotidine (20 mg/kg, 32.8% inhibition). CONCLUSION Castilleja tenuiflora extracts provided significant gastric protection in an acute ulcer induction model and topical anti-inflammatory activity in a mouse ear edema model. These activities are related to verbascoside and may explain the traditional use of Castilleja tenuiflora in the treatment of anti-inflammatory and gastrointestinal disorders. Cultured Castilleja tenuiflora plants (in vitro) exhibited pharmacological activities and also have the potential to produce bioactive compounds.
Collapse
Affiliation(s)
- Paul Mauricio Sanchez
- Departamento de Biotecnología, Centro de Desarrollo de Productos Bióticos, Instituto Politécnico Nacional, PO Box 24, Yautepec, Morelos C.P. 62730, Mexico
| | | | | | | | | | | |
Collapse
|
155
|
Singh B, Guru SK, Kour S, Jain SK, Sharma R, Sharma PR, Singh SK, Bhushan S, Bharate SB, Vishwakarma RA. Synthesis, antiproliferative and apoptosis-inducing activity of thiazolo[5,4-d]pyrimidines. Eur J Med Chem 2013; 70:864-74. [DOI: 10.1016/j.ejmech.2013.10.039] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 09/18/2013] [Accepted: 10/15/2013] [Indexed: 02/05/2023]
|
156
|
Gupta R, Mehra NK, Jain NK. Development and characterization of sulfasalazine loaded fucosylated PPI dendrimer for the treatment of cytokine-induced liver damage. Eur J Pharm Biopharm 2013; 86:449-58. [PMID: 24189499 DOI: 10.1016/j.ejpb.2013.10.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 09/11/2013] [Accepted: 10/28/2013] [Indexed: 02/05/2023]
Abstract
The present investigation was aimed at exploring the targeting potential of sulfasalazine (NF-κB inhibitor drug) loaded fucose tethered poly (propylene imine) (PPI) dendritic nanoarchitecture (SSZ-FUCO-PPID) to Kupffer cells for effective management of cytokine-induced liver damage. The SSZ-FUCO-PPID formulation was characterized for entrapment efficiency, in vitro release, stability, toxicological investigations, macrophage uptake, NF-κB inhibition, and in vivo studies. In cell uptake assay the uptake of SSZ-FUCO-PPID was found to be higher and preferentially by J774 macrophage cell line. Cytokine assay suggested that the SSZ-FUCO-PPID potentially inhibited the IL-12 p40 production in LPS activated macrophages. Western blot analysis clearly suggested that SSZ-FUCO-PPID inhibited the activation of NF-κB as indicated by the absence of p-IκB band. Pharmacokinetic study revealed improved bioavailability, half-life and mean residence time of SSZ upon fucosylation of dendrimers. The biodistribution pattern clearly established the higher amount of SSZ-FUCO-PPID in liver. Hematological data suggest that the fucosylated formulations are less immunogenic as compared to unconjugated formulations. The results suggest that the SSZ-FUCO-PPID formulation holds targeting potential to Kupffer cells for the treatment of cytokine-induced liver damage.
Collapse
Affiliation(s)
- Richa Gupta
- Pharmaceutics Research Laboratory, Department of Pharmaceutical Sciences, Dr. H. S. Gour University, Sagar, India
| | - Neelesh Kumar Mehra
- Pharmaceutics Research Laboratory, Department of Pharmaceutical Sciences, Dr. H. S. Gour University, Sagar, India.
| | - Narendra Kumar Jain
- Pharmaceutics Research Laboratory, Department of Pharmaceutical Sciences, Dr. H. S. Gour University, Sagar, India.
| |
Collapse
|
157
|
Gupta R, Mehra NK, Jain NK. Fucosylated multiwalled carbon nanotubes for Kupffer cells targeting for the treatment of cytokine-induced liver damage. Pharm Res 2013; 31:322-34. [PMID: 24043294 DOI: 10.1007/s11095-013-1162-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Accepted: 07/28/2013] [Indexed: 11/24/2022]
Abstract
PURPOSE To develop, characterize and exploring the sulfasalazine loaded fucoyslated multi walled carbon nanotubes for Kupffer cell targeting for effective management of cytokine-induce liver damage. METHODS Sulfasalazine was loaded into the fucosylated MWCNTs after subsequential functionalization (carboxylation, acylation and amidation) using dialysis membrane technique. The in vitro, in vivo studies were performed on macrophages J 774 cell line for Kupffer cells targeting for the treatment of cytokine-induced liver damage. RESULTS The loading of SSZ into SSZ-FUCO-MWCNTs was 87.77 ± 0.11% (n = 3). Sustained release was obtained from SSZ-FUCO-MWCNTs, with 89.12 ± 0.71% of SSZ released into medium at 48th hr. SSZ-FUCO-MWCNTs showed the 9.0 ± 0.23% hemolysis was drastically reduced from 21.62 ± 0.24% SSZMWCNTs 21.62 ± 0.24%. In SRB assay, SSZ-FUCO-MWCNTs showed more cytotoxicity than raw and SSZ-MWCNTs. In cytokine assay, SSZ- FUCO-MWCNTs exhibited significantly higher inhibition of IL-12 p40 secretion. In Western blot assay, SSZ-FUCO-MWCNTs significantly inhibit NF-κB activation. CONCLUSION The results suggested that the SSZ-FUCO-MWCNTs may be useful nano-carriers for targeted delivery to Kupffer cells in the treatment of cytokine-induced liver damage.
Collapse
Affiliation(s)
- Richa Gupta
- Pharmaceutics Research Laboratory Department of Pharmaceutical Sciences, Dr. H. S. Gour University, Sagar, MP, 470 003, India
| | | | | |
Collapse
|
158
|
Beyond the limits of oxygen: effects of hypoxia in a hormone-independent prostate cancer cell line. ISRN ONCOLOGY 2013; 2013:918207. [PMID: 24167746 PMCID: PMC3791829 DOI: 10.1155/2013/918207] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Accepted: 08/13/2013] [Indexed: 01/03/2023]
Abstract
Prostate cancer (PCa) has a high incidence worldwide. One of the major causes of PCa resistance is intratumoral hypoxia. In solid tumors, hypoxia is strongly associated with malignant progression and resistance to therapy, which is an indicator of poor prognosis. The antiproliferative effect and induced death caused by doxorubicin, epirubicin, cisplatin, and flutamide in a hormone-independent PCa cell line will be evaluated. The hypoxia effect on drug resistance to these drugs, as well as cell proliferation and migration, will be also analyzed. All drugs induced an antiproliferative effect and also cell death in the cell line under study. Hypoxia made the cells more resistant to all drugs. Moreover, our results reveal that long time cell exposure to hypoxia decreases cellular proliferation and migration. Hypoxia can influence cellular resistance, proliferation, and migration. This study shows that hypoxia may be a key factor in the regulation of PCa.
Collapse
|
159
|
de Sá de Sousa Nogueira TB, de Sá de Sousa Nogueira RB, e Silva DA, Tavares JF, de Oliveira Lima E, de Oliveira Pereira F, de Souza Fernandes MMM, de Medeiros FA, do Socorro Ferreira Rodrigues Sarquis R, Filho RB, da Silva Maciel JK, de Fátima Vanderlei de Souza M. First chemical constituents from Cordia exaltata Lam and antimicrobial activity of two neolignans. Molecules 2013; 18:11086-99. [PMID: 24025457 PMCID: PMC6269958 DOI: 10.3390/molecules180911086] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 08/29/2013] [Accepted: 08/29/2013] [Indexed: 11/29/2022] Open
Abstract
The phytochemical study of Cordia exaltata Lam. (Boraginaceae) led to the isolation, through chromatographic techniques, of nineteen secondary metabolites: 8,8'dimethyl-3,4,3',4'-dimethylenedioxy-7-oxo-2,7'cyclolignan (1), 8,8'-dimethyl-4,5-dimethoxy-3',4'-methylenodioxy-7-oxo-2,7'cyclolignan (2), sitosterol (3a), stigmasterol (3b), sitosterol-3-O-β-d-glucopyranoside (4a), stigmasterol-3-O-β-d-glucopyranoside (4b), phaeophytin A (5), 132-hydroxyphaeophytin A (6), 173-ethoxypheophorbide A (7), 132-hydroxy-173-ethoxypheophorbide A (8), m-methoxy-p-hydroxybenzaldehyde (9), (E)-7-(3,4-dihydroxyphenyl)-7-propenoic acid (10), 1-benzopyran-2-one (11), 7-hydroxy-1-benzopyran-2-one (12), 2,5-bis-(3',4'-methylenedioxiphenyl)-3,4-dimethyltetrahydrofuran (13), 3,4,5,3',5'-pentamethoxy-1'-allyl-8.O.4'-neolignan (14), 3,5,7,3',4'-pentahydroxyflavonol (15),5,7-dihydroxy-4'-methoxyflavone (16), 5,8-dihydroxy-7,4’-dimethoxyflavone (17), kaempherol 3-O-β-d-glucosyl-6''-α-L-ramnopyranoside (18) and kaempherol 3,7-di-O-α-l-ramnopyranoside (19). Their structures were identified by 1H and 13C-NMR using one and two-dimensional techniques. In addition, the antimicrobial activity of compounds 1, 2, 13 and 14 against bacteria and fungi are reported here for the first time.
Collapse
Affiliation(s)
- Tiago Bezerra de Sá de Sousa Nogueira
- Postgraduate Program in Bioactive Natural and Synthetic Products, Health Sciences Center, Federal University of Paraíba, João Pessoa, PB 58051-970, Brazil
| | - Raquel Bezerra de Sá de Sousa Nogueira
- Postgraduate Program in Bioactive Natural and Synthetic Products, Health Sciences Center, Federal University of Paraíba, João Pessoa, PB 58051-970, Brazil
| | - Davi Antas e Silva
- Department of Physiology and Pathology, Health Sciences Center, Federal University of Paraíba, João Pessoa, PB 58051-970, Brazil
| | - Josean Fechine Tavares
- Postgraduate Program in Bioactive Natural and Synthetic Products, Health Sciences Center, Federal University of Paraíba, João Pessoa, PB 58051-970, Brazil
| | - Edeltrudes de Oliveira Lima
- Postgraduate Program in Bioactive Natural and Synthetic Products, Health Sciences Center, Federal University of Paraíba, João Pessoa, PB 58051-970, Brazil
| | - Fillipe de Oliveira Pereira
- Postgraduate Program in Bioactive Natural and Synthetic Products, Health Sciences Center, Federal University of Paraíba, João Pessoa, PB 58051-970, Brazil
| | | | | | | | - Raimundo Braz Filho
- Laboratório de Ciências Químicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro-UFRRJ, Campos dos Goytacazes, RJ 28013-602, Brazil
| | - Jéssica Karina da Silva Maciel
- Postgraduate Program in Development and Technological Innovation in Drug-Center for Health Sciences, Federal University of Paraíba, João Pessoa, PB 58051-970, Brazil
| | - Maria de Fátima Vanderlei de Souza
- Postgraduate Program in Bioactive Natural and Synthetic Products, Health Sciences Center, Federal University of Paraíba, João Pessoa, PB 58051-970, Brazil
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +55-83-3216-7351; Fax: +55-83-3216-7511
| |
Collapse
|
160
|
Wang XF, Wang SB, Ohkoshi E, Wang LT, Hamel E, Qian K, Morris-Natschke SL, Lee KH, Xie L. N-aryl-6-methoxy-1,2,3,4-tetrahydroquinolines: a novel class of antitumor agents targeting the colchicine site on tubulin. Eur J Med Chem 2013; 67:196-207. [PMID: 23867604 PMCID: PMC3770484 DOI: 10.1016/j.ejmech.2013.06.041] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 06/18/2013] [Accepted: 06/20/2013] [Indexed: 02/07/2023]
Abstract
Structural optimizations of the prior lead 1a led to the discovery of a series of N-aryl-6-methoxy-1,2,3,4-tetrahydroquinoline derivatives as a novel class of tubulin polymerization inhibitors targeted at the colchicine binding site. The most active compound 6d showed extremely high cytotoxicity against a human tumor cell line panel (A549, KB, KBvin, and DU145) with GI50 values ranging from 1.5 to 1.7 nM, significantly more potent than paclitaxel, especially against the drug-resistant KBvin cell line, in the same assays. Analogs 5f, 6b, 6c, and 6e were also quite potent, with a GI50 range of 0.011-0.19 μM. In further studies, active compounds 6b-e and 5f significantly inhibited tubulin assembly, with IC50 values of 0.92-1.0 μM and strongly inhibited colchicine binding to tubulin, with inhibition rates of 75-99% (at 5 μM), comparable with or more potent than combretastatin A-4 (IC50 0.96 μM). Current studies included design, synthesis, and biological evaluations of 24 new compounds (series 3-6). Related SAR analysis, molecular modeling, and evaluation of essential drug-like properties, i.e. water solubility, log P, and in vitro metabolic stability, were also performed.
Collapse
Affiliation(s)
- Xiao-Feng Wang
- Beijing Institute of Pharmacology & Toxicology, 27 Tai-Ping Road, Beijing, 100850, China
- Pharmacy Department, Urumqi General Hospital, Lanzhou Military Region, Urumqi, 830000, China
| | - Sheng-Biao Wang
- Beijing Institute of Pharmacology & Toxicology, 27 Tai-Ping Road, Beijing, 100850, China
| | - Emika Ohkoshi
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, USA
| | - Li-Ting Wang
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, USA
| | - Ernest Hamel
- Screening Technologies Branch, Development Therapeutics Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick National Laboratory for Cancer Research, National Institutes of Health, Frederick, Maryland 21702, USA
| | - Keduo Qian
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, USA
| | - Susan L. Morris-Natschke
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, USA
| | - Kuo-Hsiung Lee
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, USA
- Chinese Medicine Research and Development Center, China Medical University and Hospital, Taichung, Taiwan
| | - Lan Xie
- Beijing Institute of Pharmacology & Toxicology, 27 Tai-Ping Road, Beijing, 100850, China
| |
Collapse
|
161
|
Medhe S, Bansal P, Roy SK, Rajan MGR, Srivastava MM. Combination and Nanotech Enhancement in Antibreast Cancer Efficacy: Dietary Chemopreventing Agent. BIONANOSCIENCE 2013. [DOI: 10.1007/s12668-013-0093-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
162
|
Branco AF, Sampaio SF, Wieckowski MR, Sardão VA, Oliveira PJ. Mitochondrial disruption occurs downstream from β-adrenergic overactivation by isoproterenol in differentiated, but not undifferentiated H9c2 cardiomyoblasts: differential activation of stress and survival pathways. Int J Biochem Cell Biol 2013; 45:2379-91. [PMID: 23958426 DOI: 10.1016/j.biocel.2013.08.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 07/19/2013] [Accepted: 08/07/2013] [Indexed: 12/11/2022]
Abstract
β-Adrenergic receptor stimulation plays an important role in cardiomyocyte stress responses, which may result in apoptosis and cardiovascular degeneration. We previously demonstrated that toxicity of the β-adrenergic agonist isoproterenol on H9c2 cardiomyoblasts depends on the stage of cell differentiation. We now investigate β-adrenergic receptor downstream signaling pathways and stress responses that explain the impact of muscle cell differentiation on hyper-β-adrenergic stimulation-induced cytotoxicity. When incubated with isoproterenol, differentiated H9c2 muscle cells have increased cytosolic calcium, cyclic-adenosine monophosphate content and oxidative stress, as well as mitochondrial depolarization, increased superoxide anion, loss of subunits from the mitochondrial respiratory chain, decreased Bcl-xL content, increased p53 and phosphorylated-p66Shc as well as activated caspase-3. Undifferentiated H9c2 cells incubated with isoproterenol showed increased Bcl-xL protein and increased superoxide dismutase 2 which may act as protective mechanisms. We conclude that the differentiation of H9c2 is associated with differential regulation of stress responses, which impact the toxicity of several agents, namely those acting through β-adrenergic receptors and resulting in mitochondrial disruption in differentiated cells only.
Collapse
Affiliation(s)
- Ana F Branco
- CNC - Center for Neuroscience and Cell Biology, Largo Marques de Pombal, University of Coimbra, Portugal; Department of Life Sciences, Largo Marques de Pombal, University of Coimbra, Portugal
| | | | | | | | | |
Collapse
|
163
|
Peeping into human renal calcium oxalate stone matrix: characterization of novel proteins involved in the intricate mechanism of urolithiasis. PLoS One 2013; 8:e69916. [PMID: 23894559 PMCID: PMC3722206 DOI: 10.1371/journal.pone.0069916] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 06/17/2013] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The increasing number of patients suffering from urolithiasis represents one of the major challenges which nephrologists face worldwide today. For enhancing therapeutic outcomes of this disease, the pathogenic basis for the formation of renal stones is the need of hour. Proteins are found as major component in human renal stone matrix and are considered to have a potential role in crystal-membrane interaction, crystal growth and stone formation but their role in urolithiasis still remains obscure. METHODS Proteins were isolated from the matrix of human CaOx containing kidney stones. Proteins having MW>3 kDa were subjected to anion exchange chromatography followed by molecular-sieve chromatography. The effect of these purified proteins was tested against CaOx nucleation and growth and on oxalate injured Madin-Darby Canine Kidney (MDCK) renal epithelial cells for their activity. Proteins were identified by Matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF MS) followed by database search with MASCOT server. In silico molecular interaction studies with CaOx crystals were also investigated. RESULTS Five proteins were identified from the matrix of calcium oxalate kidney stones by MALDI-TOF MS followed by database search with MASCOT server with the competence to control the stone formation process. Out of which two proteins were promoters, two were inhibitors and one protein had a dual activity of both inhibition and promotion towards CaOx nucleation and growth. Further molecular modelling calculations revealed the mode of interaction of these proteins with CaOx at the molecular level. CONCLUSIONS We identified and characterized Ethanolamine-phosphate cytidylyltransferase, Ras GTPase-activating-like protein, UDP-glucose:glycoprotein glucosyltransferase 2, RIMS-binding protein 3A, Macrophage-capping protein as novel proteins from the matrix of human calcium oxalate stone which play a critical role in kidney stone formation. Thus, these proteins having potential to modulate calcium oxalate crystallization will throw light on understanding and controlling urolithiasis in humans.
Collapse
|
164
|
Liu D, Li XM, Li CS, Wang BG. Nigerasterols A and B, Antiproliferative Sterols from the Mangrove-Derived Endophytic FungusAspergillus nigerMA-132. Helv Chim Acta 2013. [DOI: 10.1002/hlca.201200332] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
165
|
Hypoxia regulates FGFR3 expression via HIF-1α and miR-100 and contributes to cell survival in non-muscle invasive bladder cancer. Br J Cancer 2013. [PMID: 23778527 DOI: 10.1038/bjc.2013.240.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Non-muscle invasive (NMI) bladder cancer is characterised by increased expression and activating mutations of FGFR3. We have previously investigated the role of microRNAs in bladder cancer and have shown that FGFR3 is a target of miR-100. In this study, we investigated the effects of hypoxia on miR-100 and FGFR3 expression, and the link between miR-100 and FGFR3 in hypoxia. METHODS Bladder cancer cell lines were exposed to normoxic or hypoxic conditions and examined for the expression of FGFR3 by quantitative PCR (qPCR) and western blotting, and miR-100 by qPCR. The effect of FGFR3 and miR-100 on cell viability in two-dimensional (2-D) and three-dimensional (3-D) was examined by transfecting siRNA or mimic-100, respectively. RESULTS In NMI bladder cancer cell lines, FGFR3 expression was induced by hypoxia in a transcriptional and HIF-1α-dependent manner. Increased FGFR3 was also in part dependent on miR-100 levels, which decreased in hypoxia. Knockdown of FGFR3 led to a decrease in phosphorylation of the downstream kinases mitogen-activated protein kinase (MAPK) and protein kinase B (PKB), which was more pronounced under hypoxic conditions. Furthermore, transfection of mimic-100 also decreased phosphorylation of MAPK and PKB. Finally, knocking down FGFR3 profoundly decreased 2-D and 3-D cell growth, whereas introduction of mimic-100 decreased 3-D growth of cells. CONCLUSION Hypoxia, in part via suppression of miR-100, induces FGFR3 expression in bladder cancer, both of which have an important role in maintaining cell viability under conditions of stress.
Collapse
|
166
|
Hypoxia regulates FGFR3 expression via HIF-1α and miR-100 and contributes to cell survival in non-muscle invasive bladder cancer. Br J Cancer 2013; 109:50-9. [PMID: 23778527 PMCID: PMC3708569 DOI: 10.1038/bjc.2013.240] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 04/17/2013] [Accepted: 04/17/2013] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Non-muscle invasive (NMI) bladder cancer is characterised by increased expression and activating mutations of FGFR3. We have previously investigated the role of microRNAs in bladder cancer and have shown that FGFR3 is a target of miR-100. In this study, we investigated the effects of hypoxia on miR-100 and FGFR3 expression, and the link between miR-100 and FGFR3 in hypoxia. METHODS Bladder cancer cell lines were exposed to normoxic or hypoxic conditions and examined for the expression of FGFR3 by quantitative PCR (qPCR) and western blotting, and miR-100 by qPCR. The effect of FGFR3 and miR-100 on cell viability in two-dimensional (2-D) and three-dimensional (3-D) was examined by transfecting siRNA or mimic-100, respectively. RESULTS In NMI bladder cancer cell lines, FGFR3 expression was induced by hypoxia in a transcriptional and HIF-1α-dependent manner. Increased FGFR3 was also in part dependent on miR-100 levels, which decreased in hypoxia. Knockdown of FGFR3 led to a decrease in phosphorylation of the downstream kinases mitogen-activated protein kinase (MAPK) and protein kinase B (PKB), which was more pronounced under hypoxic conditions. Furthermore, transfection of mimic-100 also decreased phosphorylation of MAPK and PKB. Finally, knocking down FGFR3 profoundly decreased 2-D and 3-D cell growth, whereas introduction of mimic-100 decreased 3-D growth of cells. CONCLUSION Hypoxia, in part via suppression of miR-100, induces FGFR3 expression in bladder cancer, both of which have an important role in maintaining cell viability under conditions of stress.
Collapse
|
167
|
Wezgowiec J, Kotulska M, Saczko J, Derylo MB, Teissie J, Rols MP, Orio J, Garbiec A, Kulbacka J. Cyanines in photodynamic reaction assisted by reversible electroporation--in vitro study on human breast carcinoma cells. Photodiagnosis Photodyn Ther 2013; 10:490-502. [PMID: 24284102 DOI: 10.1016/j.pdpdt.2013.04.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 04/17/2013] [Accepted: 04/21/2013] [Indexed: 10/26/2022]
Abstract
BACKGROUND Ineffective drug delivery is a vast problem of anticancer therapies. The aim of this study was to investigate the possibility of enhancement of cyanines transport through the cell membrane by electroporation and to evaluate a photodynamic activity of these compounds. METHODS We evaluated in vitro the effectiveness of photodynamic reaction with cyanines on breast adenocarcinoma cells (MCF-7/WT) and normal Chinese hamster ovary cells (CHO) lacking voltage-dependent ion channels, alone and combined with electropermeabilization. Among six cyanines tested, two compounds could be indicated as good therapeutic candidates: IR-775 and IR-786. Cellular effects were assessed with MTT assay reporting cell mitochondrial activity and with SRB assay based on the measurement of cellular protein content. Cyanines localization was observed with confocal microscope. RESULTS Photodynamic reaction of MCF-7/WT cells with IR-775 and IR-786 did not result in cellular dysfunction. Electric field intensities and pulse duration, non-toxic for cells, significantly increased photocytotoxicity of the cyanines after electropermeabilization with IR-775 and IR-786. Much shorter exposure times were efficient for cyanines in photodynamic reaction assisted by electroporation (10 min instead of 24h). CONCLUSIONS Our results indicate that electroporation of cancerous cells in the presence of cyanine dyes could increase the uptake of the photosensitizer, which correlates with a higher cytotoxicity in the breast adenocarcinoma cell line. Electroporation may be an attractive delivery system for photosensitizers in photodynamic therapy, enabling application of new compounds and reduction of drug dose and exposure time.
Collapse
Affiliation(s)
- Joanna Wezgowiec
- Institute of Biomedical Engineering and Instrumentation, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | | | | | | | | | | | | | | | | |
Collapse
|
168
|
Talwar S, Jagani HV, Nayak PG, Kumar N, Kishore A, Bansal P, Shenoy RR, Nandakumar K. Toxicological evaluation of Terminalia paniculata bark extract and its protective effect against CCl4-induced liver injury in rodents. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 13:127. [PMID: 23742226 PMCID: PMC3682919 DOI: 10.1186/1472-6882-13-127] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 05/28/2013] [Indexed: 11/10/2022]
Abstract
BACKGROUND Based on the reported antioxidant and anti-inflammatory potential of Terminalia paniculata, the bark aqueous extract (TPW) was investigated against liver damage. METHODS Intrinsic cytotoxicity was tested on normal human liver (Chang) cell lines, followed by acute and sub-chronic toxicity studies in mice. TPW was then evaluated against CCl4-induced liver toxicity in rats. Liver enzymes (AST, ALT, and ALP) and antioxidant markers were assessed. The effect of TPW on isolated hepatic cells, post-CCl4 administration, was assessed by isolated mitochondrial membrane staining. The actions of TPW on apoptotic pathway in CCl4-treated Chang cells were also elucidated. RESULTS TPW was found to be safe at all doses tested in both in vitro and in vivo toxicity studies. TPW (400 mg/kg, p.o.) significantly (*p <0.05) improved liver enzyme activity as compared to CCl4. Also, it improved antioxidant status (GSH, GST, MDA and total thiol) and preserved hepatic cell architecture. TPW pre-treatment significantly attenuated the levels of phospho-p53, p53, cleaved caspase-3, phospho-Bad, Bad and cleaved PARP in CCl4-treated Chang cells, improving the viability considerably. CONCLUSION The findings support a protective role for Terminalia paniculata in pathologies involving oxidative stress.
Collapse
|
169
|
Ramachandran A, Betts G, Bhana S, Helme G, Blick C, Moller-Levet C, Saunders E, Valentine H, Pepper S, Miller CJ, Buffa F, Harris AL, West CML. An in vivo hypoxia metagene identifies the novel hypoxia inducible factor target gene SLCO1B3. Eur J Cancer 2013; 49:1741-51. [PMID: 23352438 DOI: 10.1016/j.ejca.2012.12.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Revised: 11/23/2012] [Accepted: 12/04/2012] [Indexed: 01/24/2023]
Abstract
A hypoxia-associated gene signature (metagene) was previously derived via in vivo data-mining. In this study, we aimed to investigate whether this approach could identify novel hypoxia regulated genes. From an initial list of nine genes, three were selected for further study (BCAR1, IGF2BP2 and SLCO1B3). Ten cell lines were exposed to hypoxia and interrogated for the expression of the three genes. All three genes were hypoxia inducible in at least one of the 10 cell lines with SLCO1B3 induced in seven. SLCO1B3 was studied further using chromatin immunoprecipitation and luciferase assays to investigate hypoxia inducible factor (HIF) dependent transcription. Two functional HIF response elements were identified within intron 1 of the gene. The functional importance of SLCO1B3 was studied by gene knockdown experiments followed by cell growth assays, flow cytometry and Western blotting. SLCO1B3 knockdown reduced cell size and 3-dimensional spheroid volume, which was associated with decreased activation of the mammalian target of rapamycin (mTOR) pathway. Finally, Oncomine analysis revealed that head and neck and colorectal tumours had higher levels of SLCO1B3 compared to normal tissue. Thus, the knowledge based approach for deriving gene signatures can identify novel biologically relevant genes.
Collapse
Affiliation(s)
- Anassuya Ramachandran
- Cancer Research UK Molecular Oncology Laboratories, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DS, UK
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
170
|
Kumar M, Qadri M, Sharma PR, Kumar A, Andotra SS, Kaur T, Kapoor K, Gupta VK, Kant R, Hamid A, Johri S, Taneja SC, Vishwakarma RA, Riyaz-Ul-Hassan S, Shah BA. Tubulin inhibitors from an endophytic fungus isolated from Cedrus deodara. JOURNAL OF NATURAL PRODUCTS 2013; 76:194-9. [PMID: 23387901 DOI: 10.1021/np3006666] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
From an endophytic fungus, a close relative of Talaromyces sp., found in association with Cedrus deodara, four compounds including two new ones (2 and 4) were isolated and characterized. The structures of two compounds (1 and 4) were confirmed by X-ray crystallography. The compounds displayed a range of cytotoxicities against human cancer cell lines (HCT-116, A-549, HEP-1, THP-1, and PC-3). All the compounds were found to induce apoptosis in HL-60 cells, as evidenced by fluorescence and scanning electron microscopy studies. Also, the compounds caused significant microtubule inhibition in HL-60 cells.
Collapse
Affiliation(s)
- Manjeet Kumar
- Natural Product Microbes, Indian Institute of Integrative Medicine, Canal Road, Jammu-Tawi, India
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
171
|
Qurishi Y, Hamid A, Sharma PR, Wani ZA, Mondhe DM, Singh SK, Zargar MA, Andotra SS, Shah BA, Taneja SC, Saxena AK. PARP cleavage and perturbance in mitochondrial membrane potential by 3-α-propionyloxy-β-boswellic acid results in cancer cell death and tumor regression in murine models. Future Oncol 2013; 8:867-81. [PMID: 22830406 DOI: 10.2217/fon.12.68] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Apoptotic induction in cancer cells has become a major focus of anticancer therapeutics. In this regard, β-boswellic acids, naturally occurring pentacyclic triterpenes, have demonstrated antiproliferative and cytotoxic effects against different types of cancers. Surprisingly, not much has been reported regarding the chemical modifications or preparation of structural analogs of the key constituents of β-boswellic acid. AIM The anticancer activity of 3-α-propionyloxy-β-boswellic acid (POBA) was investigated and this article reports for the first time that the triterpenoid ring of the boswellic acid derivative POBA is targeting the PI3K pathway. MATERIALS & METHODS Induction of apoptosis of the semi-synthetic derivative of β-boswellic acid-POBA in vitro was analyzed using a battery of human cancer cell lines followed by cell cycle phase distribution, further validated by DNA fragmentation, and was found to cause mitochondrial membrane potential loss with ultrastructural changes, as observed by electron microscopy studies and expression study using PARP cleavage, as well as validated by in vivo anti-tumor activity. RESULTS The cytotoxicity data revealed the sensitivity of various human cancer cell lines of varied tissue origin to β-boswellic acid, which robustly induced cell cycle arrest, DNA fragmentation and loss of mitochondrial membrane potential. Morphological studies of the effects of POBA revealed loss of surface projections, chromatin condensation, apoptotic body formation and POBA-mediated PARP cleavage. For in vivo therapeutic experiments, murine tumor models were treated with POBA and the treatment resulted in a significantly higher level of growth inhibition and apoptosis was significantly induced. CONCLUSION These findings demonstrate that acyl substituents/groups in the main skeleton of β-boswellic acid have the potential to be potent chemotherapeutic agents.
Collapse
Affiliation(s)
- Yasrib Qurishi
- Cancer Pharmacology Division, Indian Institute of Integrative Medicine (Council of Scientific & Industrial Research), Canal Road, Jammu-Tawi 180001, India
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
172
|
Wang XF, Ohkoshi E, Wang SB, Hamel E, Bastow KF, Morris-Natschke SL, Lee KH, Xie L. Synthesis and biological evaluation of N-alkyl-N-(4-methoxyphenyl)pyridin-2-amines as a new class of tubulin polymerization inhibitors. Bioorg Med Chem 2012; 21:632-42. [PMID: 23274123 DOI: 10.1016/j.bmc.2012.11.047] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 11/21/2012] [Accepted: 11/29/2012] [Indexed: 11/29/2022]
Abstract
Based on our prior antitumor hits, 32 novel N-alkyl-N-substituted phenylpyridin-2-amine derivatives were designed, synthesized and evaluated for cytotoxic activity against A549, KB, KB(VIN), and DU145 human tumor cell lines (HTCL). Subsequently, three new leads (6a, 7g, and 8c) with submicromolar GI(50) values of 0.19-0.41 μM in the cellular assays were discovered, and these compounds also significantly inhibited tubulin assembly (IC(50) 1.4-1.7 μM) and competitively inhibited colchicine binding to tubulin with effects similar to those of the clinical candidate CA-4 in the same assays. These promising results indicate that these tertiary diarylamine derivatives represent a novel class of tubulin polymerization inhibitors targeting the colchicine binding site and showing significant anti-proliferative activity.
Collapse
Affiliation(s)
- Xiao-Feng Wang
- Beijing Institute of Pharmacology and Toxicology, 27 Tai-Ping Road, Beijing 100850, PR China
| | | | | | | | | | | | | | | |
Collapse
|
173
|
Brito SA, Rodrigues FFG, Campos AR, da Costa JGM. Evaluation of the antifungal activity and modulation between Cajanus cajan (L.) Millsp. leaves and roots ethanolic extracts and conventional antifungals. Pharmacogn Mag 2012; 8:103-6. [PMID: 22701281 PMCID: PMC3371429 DOI: 10.4103/0973-1296.96550] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2011] [Revised: 06/09/2011] [Accepted: 05/23/2012] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND The use and investigation of natural products with antimicrobial activity from vegeral source have been reported by several researchers. Cajanus cajan (Fabaceae) is a multiple use specie mainly as human food. In popular medicine, diverse parts of the plant are used as sedative and to treat cough, hepatitis, and diabetes. MATERIALS AND METHODS This study shows the characterization of secondary metabolites present in ehtanolic extracts from leaves and roots of Cajanus cajan by phytochemical prospection. The evaluation of the antifungal activity was performed by the microdilution method, and from the subinhibitory concentrations (MIC 1/8) the modulatory activity of antifungical (fluconazole and ketoconazole) was analyzed by the direct contact assay against C. albicans ATCC40006, Candida krusei ATCC 6538 and Candida tropicalis ATCC 40042. RESULTS The results showed the presence of tannins, flavonoids, and alkaloids in both extracts as the clinically relevant antifungal activity. The modulatory potential is presented by the antifungal tested against yeasts. CONCLUSION The extracts studied here have demonstrated to be a new therapeutic source to treat these microorganism-associated diseases.
Collapse
Affiliation(s)
- Samara A Brito
- Molecular Bioprospection Post-graduation Program, Laboratory of Natural Products Research, Department of Biological Chemistry, Regional University of Cariri, Crato, CE, Brazil
| | | | | | | |
Collapse
|
174
|
Trypanocidal and cytotoxic activities of essential oils from medicinal plants of Northeast of Brazil. Exp Parasitol 2012; 132:123-8. [DOI: 10.1016/j.exppara.2012.06.003] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Revised: 06/12/2012] [Accepted: 06/13/2012] [Indexed: 11/17/2022]
|
175
|
Zhang X, Guo S, Fan R, Yu M, Li F, Zhu C, Gan Y. Dual-functional liposome for tumor targeting and overcoming multidrug resistance in hepatocellular carcinoma cells. Biomaterials 2012; 33:7103-14. [DOI: 10.1016/j.biomaterials.2012.06.048] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2012] [Accepted: 06/22/2012] [Indexed: 01/03/2023]
|
176
|
Wang S, Shi Y, Shao W, Du J, Wei H, Zhang J, Wang K, Shen S, Li S, Li J, Zhao Y. Synthesis, characterization and cytotoxicity of gold(III) complexes with deprotonated pyridyl carboxamide. Appl Organomet Chem 2012. [DOI: 10.1002/aoc.2888] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Shuxiang Wang
- Chemical Biology Key Laboratory of Hebei Province, College of Chemistry and Environmental Science; Hebei University; Baoding; 071002; People's Republic of China
| | - Yanan Shi
- Chemical Biology Key Laboratory of Hebei Province, College of Chemistry and Environmental Science; Hebei University; Baoding; 071002; People's Republic of China
| | - Wenqing Shao
- Chemical Biology Key Laboratory of Hebei Province, College of Chemistry and Environmental Science; Hebei University; Baoding; 071002; People's Republic of China
| | - Jianlong Du
- Chemical Biology Key Laboratory of Hebei Province, College of Chemistry and Environmental Science; Hebei University; Baoding; 071002; People's Republic of China
| | - Haiying Wei
- Chemical Biology Key Laboratory of Hebei Province, College of Chemistry and Environmental Science; Hebei University; Baoding; 071002; People's Republic of China
| | - Jinchao Zhang
- Chemical Biology Key Laboratory of Hebei Province, College of Chemistry and Environmental Science; Hebei University; Baoding; 071002; People's Republic of China
| | - Ke Wang
- Shijiazhuang Center for Disease Control and Prevention; Shijiazhuang; 050011; Hebei; People's Republic of China
| | - Shigang Shen
- Chemical Biology Key Laboratory of Hebei Province, College of Chemistry and Environmental Science; Hebei University; Baoding; 071002; People's Republic of China
| | - Shenghui Li
- Chemical Biology Key Laboratory of Hebei Province, College of Chemistry and Environmental Science; Hebei University; Baoding; 071002; People's Republic of China
| | - Jitai Li
- Chemical Biology Key Laboratory of Hebei Province, College of Chemistry and Environmental Science; Hebei University; Baoding; 071002; People's Republic of China
| | - Yangyang Zhao
- Chemical Biology Key Laboratory of Hebei Province, College of Chemistry and Environmental Science; Hebei University; Baoding; 071002; People's Republic of China
| |
Collapse
|
177
|
Rojas-Sepúlveda AM, Mendieta-Serrano M, Mojica MYA, Salas-Vidal E, Marquina S, Villarreal ML, Puebla AM, Delgado JI, Alvarez L. Cytotoxic podophyllotoxin type-lignans from the steam bark of Bursera fagaroides var. fagaroides. Molecules 2012; 17:9506-19. [PMID: 22878225 PMCID: PMC6268064 DOI: 10.3390/molecules17089506] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Revised: 08/03/2012] [Accepted: 08/03/2012] [Indexed: 11/19/2022] Open
Abstract
The hydroalcoholic extract of the steam bark of B. fagaroides var. fagaroides displayed potent cytotoxic activity against four cancer cell lines, namely KB (ED50 = 9.6 × 10−2 μg/mL), PC-3 (ED50 = 2.5 × 10−1 μg/mL), MCF-7 (ED50 = 6.6 μg/mL), and HF-6 (ED50 = 7.1 × 10−3 μg/mL). This extract also showed anti-tumour activity when assayed on mice inoculated with L5178Y lymphoma cells. Bioactivity-directed isolation of this extract, afforded seven podophyllotoxin-type lignans identified as podophyllotoxin (1), β-peltatin-A-methylether (2), 5′-desmethoxy-β-peltatin-A-methylether (3), desmethoxy-yatein (4), desoxypodophyllotoxin (5), burseranin (6), and acetyl podophyllotoxin (7) by 1D and 2DNMR and FAB-MS analyses, and comparison with reported values. All the isolated compounds showed potent cytotoxic activity in the cell lines tested, especially compound 3, which exhibited greater activity than camptothecin and podophyllotoxin against PC-3 (ED50 = 1.0 × 10−5 μg/mL), and KB (ED50 = 1.0 × 10−5 μg/mL). This is the first report of the isolation of podophyllotoxin and its acetate in a Bursera species.
Collapse
Affiliation(s)
- Andrés M. Rojas-Sepúlveda
- Centro de Investigaciones Químicas, Universidad Nacional Autónoma de México, Cuernavaca, Morelos 62209, Mexico; (A.M.R.-S.); (M.Y.A.-M.); (S.M.)
| | - Mario Mendieta-Serrano
- Departamento de Fisiología Molecular y Genética del Desarrollo, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos 62250, Mexico; (M.M.-S.); (E.S.-V.)
| | - Mayra Y. Antúnez Mojica
- Centro de Investigaciones Químicas, Universidad Nacional Autónoma de México, Cuernavaca, Morelos 62209, Mexico; (A.M.R.-S.); (M.Y.A.-M.); (S.M.)
| | - Enrique Salas-Vidal
- Departamento de Fisiología Molecular y Genética del Desarrollo, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos 62250, Mexico; (M.M.-S.); (E.S.-V.)
| | - Silvia Marquina
- Centro de Investigaciones Químicas, Universidad Nacional Autónoma de México, Cuernavaca, Morelos 62209, Mexico; (A.M.R.-S.); (M.Y.A.-M.); (S.M.)
| | - María Luisa Villarreal
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos 62209, Mexico;
| | - Ana María Puebla
- Departamento de Farmacobiología, Centro Universitario de Ciencias Exactas e Ingeniería, Universidad de Guadalajara, Guadalajara, Jalisco 44430, Mexico; (A.M.P.); (J.I.D.)
| | - Jorge I. Delgado
- Departamento de Farmacobiología, Centro Universitario de Ciencias Exactas e Ingeniería, Universidad de Guadalajara, Guadalajara, Jalisco 44430, Mexico; (A.M.P.); (J.I.D.)
| | - Laura Alvarez
- Centro de Investigaciones Químicas, Universidad Nacional Autónoma de México, Cuernavaca, Morelos 62209, Mexico; (A.M.R.-S.); (M.Y.A.-M.); (S.M.)
- Author to whom correspondence should be addressed; ; Tel.: +52-777-329-7997; Fax: +52-777-329-7998
| |
Collapse
|
178
|
Lepri SR, Luiz RC, Zanelatto LC, da Silva PBG, Sartori D, Ribeiro LR, Mantovani MS. Chemoprotective activity of the isoflavones, genistein and daidzein on mutagenicity induced by direct and indirect mutagens in cultured HTC cells. Cytotechnology 2012; 65:213-22. [PMID: 22752585 DOI: 10.1007/s10616-012-9476-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Accepted: 06/13/2012] [Indexed: 11/26/2022] Open
Abstract
Isoflavones are phenolic compounds widely distributed in plants and found in a high percentage in soybeans. They have important biological properties and are regarded as potential chemopreventive agents. The aim of this study was to verify the preventive effect of two soy isoflavones (genistein and daidzein) by a micronucleus assay, analysis of GST activity, and real-time RT-PCR analysis of GSTa2 gene expression. Mutagens of direct (doxorubicin) and indirect (2-aminoanthracene) DNA damage were used. Hepatoma cells (HTC) were treated with genistein or daidzein for 26 h at noncytotoxic concentrations; 10 μM when alone, and 0.1, 1.0 and 10 μM when combined with genotoxic agents. The micronucleus test demonstrated that both isoflavones alone had no genotoxic effect. Genistein showed antimutagenic effects at 10 μM with both direct and indirect DNA damage agents. On phase II enzyme regulation, the current study indicated an increase in total cytoplasmic GST activity in response to genistein and daidzein at 10 μM supplementation. However, the mRNA levels of GSTa2 isozymes were not differentially modulated by genistein or daidzein. The results point to an in vitro antimutagenic activity of genistein against direct and indirect DNA damage-induced mutagenicity.
Collapse
Affiliation(s)
- Sandra Regina Lepri
- General Biology Department, State University of Londrina (UEL), Rodovia Celso Garcia Cid, Pr 445 km 380, Campus Universitário, Cx. Postal 6001, Londrina, PR, CEP 86051-980, Brazil,
| | | | | | | | | | | | | |
Collapse
|
179
|
Taylor P, Arsenak M, Abad MJ, Fernández A, Milano B, Gonto R, Ruiz MC, Fraile S, Taylor S, Estrada O, Michelangeli F. Screening of Venezuelan medicinal plant extracts for cytostatic and cytotoxic activity against tumor cell lines. Phytother Res 2012; 27:530-9. [PMID: 22648665 DOI: 10.1002/ptr.4752] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Accepted: 05/05/2012] [Indexed: 12/21/2022]
Abstract
There are estimated to be more than 20,000 species of plants in Venezuela, of which more than 1500 are used for medicinal purposes by indigenous and local communities. Only a relatively small proportion of these have been evaluated in terms of their potential as antitumor agents. In this study, we screened 308 extracts from 102 species for cytostatic and cytotoxic activity against a panel of six tumor cell lines using a 24-h sulphorhodamine B assay. Extracts from Clavija lancifolia, Hamelia patens, Piper san-vicentense, Physalis cordata, Jacaranda copaia, Heliotropium indicum, and Annona squamosa were the most cytotoxic, whereas other extracts from Calotropis gigantea, Hyptis dilatata, Chromolaena odorata, Siparuna guianensis, Jacaranda obtusifolia, Tapirira guianensis, Xylopia aromatica, Protium heptaphyllum, and Piper arboreum showed the greatest cytostatic activity. These results confirm previous reports on the cytotoxic activities of the above-mentioned plants as well as prompting further studies on others such as C. lancifolia and H. dilatata that have not been so extensively studied.
Collapse
Affiliation(s)
- Peter Taylor
- Centro de Medicina Experimental, Instituto Venezolano de Investigaciones Científicas, Caracas, Venezuela.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
180
|
Cavalcanti BC, Ferreira JRO, Cabral IO, Magalhães HIF, de Oliveira CC, Rodrigues FAR, Rocha DD, Barros FWA, da Silva CR, Júnior HVN, Canuto KM, Silveira ER, Pessoa C, Moraes MO. Genetic toxicology evaluation of essential oil of Alpinia zerumbet and its chemoprotective effects against H(2)O(2)-induced DNA damage in cultured human leukocytes. Food Chem Toxicol 2012; 50:4051-61. [PMID: 22446814 DOI: 10.1016/j.fct.2012.03.038] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Revised: 03/05/2012] [Accepted: 03/07/2012] [Indexed: 01/20/2023]
Abstract
Essential oil (EO) of Alpinia zerumbet leaves, at non-toxic concentrations (50-300 μg/mL), did not induce genotoxicity in human leukocytes. However, at the highest concentration (500 μg/mL) tested caused a reduction in cell proliferation and viability, and an increase in DNA damage. Moreover, in vivo experiments showed that EO (400 mg/kg) did not exert mutagenicity on peripheral blood cells and bone marrow in mice. In DPPH test, EO showed scavenging effects against DPPH radicals, and other free radicals (determination of intracellular GSH and lipid peroxidation assays). Furthermore, EO was able to reduce the intracellular levels of ROS, and prevented leukocytes DNA against oxidative damage. The ability of EO to reduce H(2)O(2) toxicity was observed only when cells were treated with EO during and after exposure to H(2)O(2). With the co- and post-treatment procedures, EO decreased the frequency of apoptotic and micronucleated leukocytes as well DNA strand breaks. However, a synergistic effect was observed in cultures exposed to 500 μg/mL EO. In conclusion, EO at concentrations up to 300 μg/mL or doses up to 400mg/kg are not mutagenic in leukocytes and in mice, but do have antioxidative and protective effects against the cytotoxicity and clastogenesis induced by H(2)O(2).
Collapse
Affiliation(s)
- Bruno C Cavalcanti
- National Laboratory of Experimental Oncology, Department of Physiology and Pharmacology, Federal University of Ceará, P.O. Box 3157, CEP 60430-270 Fortaleza, Ceará, Brazil
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
181
|
Gehrke H, Frühmesser A, Pelka J, Esselen M, Hecht LL, Blank H, Schuchmann HP, Gerthsen D, Marquardt C, Diabaté S, Weiss C, Marko D. In vitrotoxicity of amorphous silica nanoparticles in human colon carcinoma cells. Nanotoxicology 2012; 7:274-93. [DOI: 10.3109/17435390.2011.652207] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
182
|
Kurapati KRV, Samikkannu T, Kadiyala DB, Zainulabedin SM, Gandhi N, Sathaye SS, Indap MA, Boukli N, Rodriguez JW, Nair MP. Combinatorial cytotoxic effects of Curcuma longa and Zingiber officinale on the PC-3M prostate cancer cell line. J Basic Clin Physiol Pharmacol 2012; 23:139-46. [PMID: 23072849 PMCID: PMC4561547 DOI: 10.1515/jbcpp-2012-0021] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Accepted: 08/01/2012] [Indexed: 12/28/2022]
Abstract
BACKGROUND Many plant-derived products exhibit potent chemopreventive activity against animal tumor models as well as rodent and human cancer cell lines. They have low side effects and toxicity and presumably modulate the factors that are critical for cell proliferation, differentiation, senescence and apoptosis. The present study investigates the effects of some medicinal plant extracts from generally recognized as safe plants that may be useful in the prevention and treatment of cancer. METHODS Clonogenic assays using logarithmically-growing cells were performed to test the effect. The cytotoxic effects of Curcuma longa and Zingiber officinale were studied using sulforhodamine B assay, tetrazolium dye assay, colony morphology and microscopic analysis. RESULTS Out of the 13 lyophilized plant-derived extracts evaluated for growth-inhibitory effects on the PC-3M prostate cancer cell line, two extracts derived from C. longa and Z. officinale showed significant inhibitory effects on colony-forming ability. The individual and augmentative effects of these two extracts were tested for their narrow range effective lower concentration on PC-3M in clonogenic assays. At relatively lower concentrations, C. longa showed significant inhibition of colony formation in clonogenic assays; whereas at same concentrations Z. officinale showed only moderate inhibitory effects. However, when both the agents were tested together at the same concentrations, the combined effects were much more significant than their individual ones. On normal prostate epithelial cells both C. longa and Z. officinale had similar effects but at a lower magnitude. These observations were confirmed by several cytotoxicity assays involving the morphological appearance of the colonies, microscopic observations, per cent inhibition in comparison to control by sulforhodamine B and tetrazolium dye assay. CONCLUSIONS From these observations, it was concluded that the combined effects of C. longa and Z. officinale are much greater than their individual effects, suggesting the role of multiple components and their synergistic mode of actions to elicit stronger beneficial effects.
Collapse
Affiliation(s)
- Kesava Rao V. Kurapati
- Department of Immunology, Institute of Neuroimmune Pharmacology, College of Medicine, Florida International University, Miami, Florida, USA
| | - Thangavel Samikkannu
- Department of Immunology, Institute of Neuroimmune Pharmacology, College of Medicine, Florida International University, Miami, Florida, USA
| | - Dakshayani B. Kadiyala
- Department of Immunology, Institute of Neuroimmune Pharmacology, College of Medicine, Florida International University, Miami, Florida, USA
| | - Saiyed M. Zainulabedin
- Department of Immunology, Institute of Neuroimmune Pharmacology, College of Medicine, Florida International University, Miami, Florida, USA
| | - Nimisha Gandhi
- Department of Immunology, Institute of Neuroimmune Pharmacology, College of Medicine, Florida International University, Miami, Florida, USA
| | - Sadhana S. Sathaye
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Mumbai, India
| | | | - Nawal Boukli
- Biomedical Proteomics Facility, Department of Microbiology and Immunology, Universidad Central del Caribe, School of Medicine, Bayamón, Puerto Rico
| | - Jose W. Rodriguez
- Biomedical Proteomics Facility, Department of Microbiology and Immunology, Universidad Central del Caribe, School of Medicine, Bayamón, Puerto Rico
| | - Madhavan P.N. Nair
- Department of Immunology, Institute of Neuroimmune Pharmacology, College of Medicine, Florida International University, Miami, Florida, USA
| |
Collapse
|
183
|
Voon HC, Bhat R, Rusul G. Flower Extracts and Their Essential Oils as Potential Antimicrobial Agents for Food Uses and Pharmaceutical Applications. Compr Rev Food Sci Food Saf 2011. [DOI: 10.1111/j.1541-4337.2011.00169.x] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
184
|
Moreno-Escobar JA, Bazald A S, Villarreal ML, Bonilla-Barbosa JR, Mendoza S, Rodríguez-López V. Cytotoxic and antioxidant activities of selected Lamiales species from Mexico. PHARMACEUTICAL BIOLOGY 2011; 49:1243-1248. [PMID: 21846172 DOI: 10.3109/13880209.2011.589454] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
CONTEXT Methanol extracts obtained from eight species belonging to four families of the Lamiales order native to Mexico were investigated for biological action. OBJECTIVE Cytotoxicity and antioxidant activity of methanol extracts have been investigated. MATERIALS AND METHODS Cytotoxic activity was evaluated by the sulphorhodamine B protein staining assay against KB (nasopharyngeal), HEp-2 (larynx), HF-6 (colon), MCF7 (breast), PC-3 (prostate), and Ca Ski (cervix) carcinoma cell lines. To analyze the antioxidant activity, common stable radicals chromogens, 2,2-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid (ABTS+) and DPPH (1,1-diphenyl-2-picrylhydrazyl) were used. The ferric reducing antioxidant power (FRAP) and the total phenolic content of the samples were also determined. RESULTS Some of the extracts, such as Limosella aquatica L. (Scrophulariaceae), Mimulus glabratus Kunth. (Phrymaceae), Pedicularis mexicana Zucc. ex Benth. (Orobanchaceae), and Penstemon campanulatus (Cav.) Willd. (Plantaginaceae) displayed remarkably selective cytotoxic activity. However, the extract from Veronica americana (Raf.) Schwein (Plantaginaceae) showed the highest activity with IC₅₀ values of 1.46 and 0.169 g/ μL on PC-3 and HF-6 cells, respectively. With the exception of M. glabratus, all the extracts showed different degrees of antioxidant activity with IC₅₀ values from 0.89 up to 1.8 in the ABTS assay; from 0.49 up to 1.25 mg/mL in the DPPH assay and with the FRAP evaluation, 36 to 68 equivalents in mM of FeSO₄. V. americana also showed the highest antoxidant activity with IC₅₀ values from 0.491 and 0.892 mg/mL, on DPPH and ABTS assays, respectively. DISCUSSION AND CONCLUSION These findings demonstrated that the species studied have great potential cytotoxic and antioxidant activity.
Collapse
Affiliation(s)
- J A Moreno-Escobar
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Morelos, México
| | | | | | | | | | | |
Collapse
|
185
|
Branco AF, Pereira SL, Moreira AC, Holy J, Sardão VA, Oliveira PJ. Isoproterenol cytotoxicity is dependent on the differentiation state of the cardiomyoblast H9c2 cell line. Cardiovasc Toxicol 2011; 11:191-203. [PMID: 21455642 DOI: 10.1007/s12012-011-9111-5] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
H9c2 cells are used as a surrogate for cardiac cells in several toxicological studies, which are usually performed with cells in their undifferentiated state, raising questions on the applicability of the results to adult cardiomyocytes. Since H9c2 myoblasts have the capacity to differentiate into skeletal and cardiac muscle cells under different conditions, the hypothesis of the present work was that cells in different differentiation states differ in their susceptibility to toxicants. In order to test the hypothesis, the effects of the cardiotoxicant isoproterenol (ISO) were investigated. The present work demonstrates that differentiated H9c2 cells are more susceptible to ISO toxicity. Cellular content of beta(1)-adrenergic receptors (AR), beta(3)-AR, and calcineurin is decreased as cells differentiate, as opposed to the content on the mitochondrial voltage-dependent anion channel (VDAC) and phosphorylated p38-MAPK, which increase. After ISO treatment, the pro-apoptotic protein Bax increases in all experimental groups, although only undifferentiated myoblasts up-regulate the anti-apoptotic Bcl-2. Calcineurin is decreased in differentiated H9c2 cells, which suggests an important role against ISO-induced cell death. The results indicate that the differentiation state of H9c2 myoblasts influence ISO toxicity, which may involve calcineurin, p38-MAPK, and Bax/Bcl-2 alterations. The data also provide new insights into cardiovascular toxicology during early development.
Collapse
MESH Headings
- Adrenergic beta-Agonists/toxicity
- Animals
- Calcineurin/metabolism
- Cell Differentiation
- Cell Line
- Dose-Response Relationship, Drug
- Isoproterenol/toxicity
- Myoblasts, Cardiac/drug effects
- Myoblasts, Cardiac/metabolism
- Myoblasts, Cardiac/pathology
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/metabolism
- Myocytes, Cardiac/pathology
- Phosphorylation
- Proto-Oncogene Proteins c-bcl-2/metabolism
- Rats
- Receptors, Adrenergic, beta-1/drug effects
- Receptors, Adrenergic, beta-1/metabolism
- Receptors, Adrenergic, beta-3/drug effects
- Receptors, Adrenergic, beta-3/metabolism
- Voltage-Dependent Anion Channels/metabolism
- bcl-2-Associated X Protein/metabolism
- p38 Mitogen-Activated Protein Kinases/metabolism
Collapse
Affiliation(s)
- Ana F Branco
- Center for Neuroscience and Cell Biology, Department of Life Sciences, University of Coimbra, 3004-517 Coimbra, Portugal
| | | | | | | | | | | |
Collapse
|
186
|
Luo Z, Zhao Y, Wang Y, Yang X, Zhao B. Protective effect of theaflavins on neuron against 6-hydroxydopamine-induced apoptosis in SH-SY5Y cells. J Clin Biochem Nutr 2011; 50:133-8. [PMID: 22448094 PMCID: PMC3303475 DOI: 10.3164/jcbn.11-28] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2011] [Accepted: 05/21/2011] [Indexed: 01/08/2023] Open
Abstract
Theaflavins, the oxidation products of tea polyphenols are important biologically active components of black tea. 6-hydroxydopamine is a pro-parkinsonian neurotoxin. Theaflavins could inhibit the auto-oxidation of 6-hydroxydopamine in a dose-dependent manner from 0.5 µg/ml to 25 µg/ml. Here we investigated the protective effect of theaflavins on 6-hydroxydopamine induced SH-SY5Y cells against apoptosis (within this concentration range). It was found that pretreating SH-SY5Y cells with 0.5 µg/ml of theaflavins prevented 6-hydroxydopamine-induced loss of cell viability, condensed nuclear morphology, attenuated 6-hydroxydopamine-induced apoptosis, decrease of mitochondrial membrane potential and the increase of intracellular nitric oxide levels. Our results indicated that theaflavins had protective effect against 6-hydroxydopamine induced apoptosis at low concentrations, possibly through inhibition of reactive oxygen species and nitric oxide production.
Collapse
Affiliation(s)
- Zihua Luo
- Zhejiang University Tea Research Institute, 268 Kaixuan Road, Hangzhou 310029, P.R. China
| | | | | | | | | |
Collapse
|
187
|
Seo YC, Choi WY, Kim JS, Yoon CS, Lim HW, Cho JS, Ahn JH, Lee HY. Effect of ultra high pressure processing on immuno-modulatory activities of the fruits of Rubus coreanus Miquel. INNOV FOOD SCI EMERG 2011. [DOI: 10.1016/j.ifset.2011.04.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
188
|
Adaramoye OA, Sarkar J, Singh N, Meena S, Changkija B, Yadav PP, Kanojiya S, Sinha S. Antiproliferative action of Xylopia aethiopica fruit extract on human cervical cancer cells. Phytother Res 2011; 25:1558-63. [PMID: 21698670 DOI: 10.1002/ptr.3551] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2010] [Revised: 05/03/2011] [Accepted: 05/06/2011] [Indexed: 11/06/2022]
Abstract
The anticancer potential of Xylopia aethiopica fruit extract (XAFE), and the mechanism of cell death it elicits, was investigated in various cell lines. Treatment with XAFE led to a dose-dependent growth inhibition in most cell lines, with selective cytotoxicity towards cancer cells and particularly the human cervical cancer cell line C-33A. In this study, apoptosis was confirmed by nuclear fragmentation and sub-G(0)/G(1) phase accumulation. The cell cycle was arrested at the G(2)/M phase with a decreased G(0)/G(1) population. A semi-quantitative gene expression study revealed dose-dependent up-regulation of p53 and p21 genes, and an increase in the Bax/Bcl-2 ratio. These results indicate that XAFE could be a potential therapeutic agent against cancer since it inhibits cell proliferation, and induces apoptosis and cell cycle arrest in C-33A cells.
Collapse
Affiliation(s)
- Oluwatosin A Adaramoye
- Drug Target Discovery and Development Division, Central Drug Research Institute (CDRI-CSIR), Lucknow, India
| | | | | | | | | | | | | | | |
Collapse
|
189
|
Pereira DM, Cheel J, Areche C, San-Martin A, Rovirosa J, Silva LR, Valentao P, Andrade PB. Anti-proliferative activity of meroditerpenoids isolated from the brown alga Stypopodium flabelliforme against several cancer cell lines. Mar Drugs 2011; 9:852-862. [PMID: 21673894 PMCID: PMC3111187 DOI: 10.3390/md9050852] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Revised: 04/30/2011] [Accepted: 05/09/2011] [Indexed: 01/08/2023] Open
Abstract
The sea constitutes one of the most promising sources of novel compounds with potential application in human therapeutics. In particular, algae have proved to be an interesting source of new bioactive compounds. In this work, six meroditerpenoids (epitaondiol, epitaondiol diacetate, epitaondiol monoacetate, stypotriol triacetate, 14-ketostypodiol diacetate and stypodiol) isolated from the brown alga Stypopodium flabelliforme were tested for their cell proliferation inhibitory activity in five cell lines. Cell lines tested included human colon adenocarcinoma (Caco-2), human neuroblastoma (SH-SY5Y), rat basophilic leukemia (RBL-2H3), murine macrophages (RAW.267) and Chinese hamster fibroblasts (V79). Antimicrobial activity of the compounds was also evaluated against Staphylococcus aureus, Salmonella typhimurium, Proteus mirabilis, Bacillus cereus, Enterococcus faecalis and Micrococcus luteus. Overall, the compounds showed good activity against all cell lines, with SH-SY5Y and RAW.267 being the most susceptible. Antimicrobial capacity was observed for epitaondiol monoacetate, stypotriol triacetate and stypodiol, with the first being the most active. The results suggest that these molecules deserve further studies in order to evaluate their potential as therapeutic agents.
Collapse
Affiliation(s)
- David M. Pereira
- REQUIMTE/Laboratory of Pharmacognosy, Department of Chemistry, Faculty of Pharmacy, Porto University, R. Anibal Cunha 164, 4050-047 Porto, Portugal; E-Mails: (D.M.P.); (L.R.S.); (P.V.)
| | - Jose Cheel
- Department of Pharmacognosy, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic; E-Mail:
- Department of Research and Development, CPN s.r.o., Dolni Dobrouc 401, 561 02 Dolni Dobrouc, Czech Republic
| | - Carlos Areche
- Department of Chemistry, Faculty of Sciences, University of Chile, Casilla 653, Santiago, Chile; E-Mails: (C.A.); (A.S.-M.); (J.R.)
| | - Aurelio San-Martin
- Department of Chemistry, Faculty of Sciences, University of Chile, Casilla 653, Santiago, Chile; E-Mails: (C.A.); (A.S.-M.); (J.R.)
| | - Juana Rovirosa
- Department of Chemistry, Faculty of Sciences, University of Chile, Casilla 653, Santiago, Chile; E-Mails: (C.A.); (A.S.-M.); (J.R.)
| | - Luis R. Silva
- REQUIMTE/Laboratory of Pharmacognosy, Department of Chemistry, Faculty of Pharmacy, Porto University, R. Anibal Cunha 164, 4050-047 Porto, Portugal; E-Mails: (D.M.P.); (L.R.S.); (P.V.)
| | - Patricia Valentao
- REQUIMTE/Laboratory of Pharmacognosy, Department of Chemistry, Faculty of Pharmacy, Porto University, R. Anibal Cunha 164, 4050-047 Porto, Portugal; E-Mails: (D.M.P.); (L.R.S.); (P.V.)
| | - Paula B. Andrade
- REQUIMTE/Laboratory of Pharmacognosy, Department of Chemistry, Faculty of Pharmacy, Porto University, R. Anibal Cunha 164, 4050-047 Porto, Portugal; E-Mails: (D.M.P.); (L.R.S.); (P.V.)
| |
Collapse
|
190
|
Wungsintaweekul B, Umehara K, Miyase T, Noguchi H. Estrogenic and anti-estrogenic compounds from the Thai medicinal plant, Smilax corbularia (Smilacaceae). PHYTOCHEMISTRY 2011; 72:495-502. [PMID: 21315392 DOI: 10.1016/j.phytochem.2010.12.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2010] [Revised: 12/18/2010] [Accepted: 12/28/2010] [Indexed: 05/30/2023]
Abstract
From the rhizomes of Smilax corbularia Kunth. (Smilacaceae), 11 compounds, (2R,3R)-2″-acetyl astilbin, (2R,3R)-3″-acetyl astilbin, (2R,3R)-4″-acetyl astilbin, (2R,3R)-3″-acetyl engeletin, (2R,3S)-4″-acetyl isoastilbin, 2-(4-hydroxyphenyl)-3,4,9,10-tetrahydro-3,5-dihydroxy-10-(3,4-dihydroxyphenyl)-(2R,3R,10R)-2H,8H-benzo [1,2-b:3,4-b'] dipyran-8-one, 2-(4-hydroxyphenyl)-3,4,9,10-tetrahydro-3,5-dihydroxy-10-(3,4-dihydroxyphenyl)-(2R,3R,10S)-2H, 8H-benzo [1,2-b:3,4-b'] dipyran-8-one, 3,4-dihydro-7-hydroxy-4-(3,4-dihydroxyphenyl)-5-[(1E)-2-(4-hydroxyphenyl) ethenyl]-2H-1-benzopyran-2-one, 3,4-dihydro-7-hydroxy-4-(3,4-dihydroxy-phenyl)-5-[(1E)-2-(3,4-dihydroxyphenyl) ethenyl]-2H-1-benzopyran-2-one, 3,4-dihydro-7-hydroxy-4-(4-hydroxy-3-methoxyphenyl)-5-[(1E)-2-(4-hydroxyphenyl) ethenyl]-2H-1-benzopyran-2-one, and 5,7,3',4'-tetrahydroxy-3-phenylcoumarin along with 34 known compounds were isolated and characterized as 19 flavonoids, 14 catechin derivatives, 6 stilbene derivatives, and 6 miscellaneous substances. All isolates had their estrogenic and anti-estrogenic activities determined using the estrogen-responsive human breast cancer cell lines MCF-7 and T47D. The major constituents were recognized as flavanonol rhamnosides by the suppressive effect on estradiol induced cell proliferation at a concentration of 1μM. Meanwhile, flavanonol rhamnoside acetates demonstrated estrogenic activity in both MCF-7 and T47D cells at a concentration of 100μM, and they enhanced the effects of co-treated E2 on T47D cell proliferation at concentrations of more than 0.1μM.
Collapse
|
191
|
Palmeira A, Rodrigues F, Sousa E, Pinto M, Vasconcelos MH, Fernandes MX. New Uses for Old Drugs: Pharmacophore-Based Screening for the Discovery of P-Glycoprotein Inhibitors. Chem Biol Drug Des 2011; 78:57-72. [DOI: 10.1111/j.1747-0285.2011.01089.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
192
|
Li YW, Zhu GY, Shen XL, Chu JH, Yu ZL, Fong WF. Furanodienone inhibits cell proliferation and survival by suppressing ERα signaling in human breast cancer MCF-7 cells. J Cell Biochem 2011; 112:217-24. [DOI: 10.1002/jcb.22922] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
193
|
Kumar CNSSP, Parida DK, Santhoshi A, Kota AK, Sridhar B, Rao VJ. Synthesis and biological evaluation of tetrazole containing compounds as possible anticancer agents. MEDCHEMCOMM 2011. [DOI: 10.1039/c0md00263a] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
194
|
Dashora N, Sodde V, Prabhu KS, Lobo R. In vitro Cytotoxic Activity of Dendrophthoe falcata on Human Breast Adenocarcinoma Cells-MCF-7. ACTA ACUST UNITED AC 2010. [DOI: 10.3923/ijcr.2011.47.54] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
195
|
Ferreres F, Pereira DM, Gil-Izquierdo A, Valentão P, Botelho J, Mouga T, Andrade PB. HPLC-PAD-atmospheric pressure chemical ionization-MS metabolite profiling of cytotoxic carotenoids from the echinoderm Marthasterias glacialis (spiny sea-star). J Sep Sci 2010; 33:2250-7. [PMID: 20574958 DOI: 10.1002/jssc.201000197] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
An HPLC-PAD-atmospheric pressure chemical ionization-MS metabolite profiling analysis was conducted on the marine echinoderm Marthasterias glacialis (spiny sea-star). Bio-guided purification of the methanolic extract led to the isolation of several carotenoids, namely zeaxanthin, astaxanthin and lutein. These compounds were characterized using both UV-Vis characteristics and MS spectra interpretation. No previous works addressed the MS analysis of carotenoids present in this organism. The purified carotenoid fraction displayed a strong cell proliferation inhibition against rat basophilic leukemia RBL-2H3 (IC(25)=268 microg/mL) cancer cell line. Against healthy V79 (rat lung fibroblasts (IC(25)=411 microg/mL)) cell line, however, toxicity was lower, as it is desired for anti-cancer molecules. This study suggests that M. glacialis may constitute a good source of bioactive compounds that can be used as lead compounds for the pharmaceutical industry.
Collapse
Affiliation(s)
- Federico Ferreres
- Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS (CSIC), Murcia, Spain
| | | | | | | | | | | | | |
Collapse
|
196
|
Nedel F, Soki FN, Conde MCM, Zeitlin BD, Tarquinio SBC, Nör JE, Seixas FK, Demarco FF. Comparative analysis of two colorimetric assays in dental pulp cell density. Int Endod J 2010; 44:59-64. [PMID: 20880134 DOI: 10.1111/j.1365-2591.2010.01796.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
AIM To compare and contrast two colorimetric assays used for the measurement of proliferation using two dental pulp cell types: dental pulp stem cells (DPSC) and human dental pulp fibroblasts (HDPF). METHODOLOGY Dental pulp stem cells or HDPF were seeded at 0.25×10(4) cells per well in 96-well plates. Cell proliferation was evaluated after 24-72h. At the end of the experimental period, the sulforhodamine B (SRB) assay or a water-soluble tetrazolium salt (WST-1) assay was performed. Optical densities were determined in a microplate reader (Genius; TECAN). Data were analysed by Student's t-test (comparison between cell types) and one-way anova followed by Tukey test (time-point intervals). Pearson' correlation tests were performed to compare the two assays for each cell line. RESULTS Both assays showed that DPSC had higher proliferation rates than HDPF. A positive significant correlation between the two colorimetric assays tested for both cell types DPSC (Pearson's correlation coefficient=0.847; P<0.05) and HDPF (Pearson's correlation coefficient=0.775; P<0.05). CONCLUSION Both tests demonstrated similar trends of cell proliferation, and thus are both appropriate for the evaluation of DPSC and HDPF. The choice of assay is therefore one of the practical applications. SRB stained plates can be dried and stored so may have utility in laboratories where data may require review or when access to analytical equipment is limited. WST-1 assays have the benefit of both ease and speed and may have utility in laboratories requiring either high throughput or rapid analyses.
Collapse
Affiliation(s)
- F Nedel
- School of Dentistry Center of Biotechnology, Federal University of Pelotas, Pelotas, RS, Brazil
| | | | | | | | | | | | | | | |
Collapse
|
197
|
Simpson NE, Lambert WM, Watkins R, Giashuddin S, Huang SJ, Oxelmark E, Arju R, Hochman T, Goldberg JD, Schneider RJ, Reiz LFL, Soares FA, Logan SK, Garabedian MJ. High levels of Hsp90 cochaperone p23 promote tumor progression and poor prognosis in breast cancer by increasing lymph node metastases and drug resistance. Cancer Res 2010; 70:8446-56. [PMID: 20847343 DOI: 10.1158/0008-5472.can-10-1590] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
p23 is a heat shock protein 90 (Hsp90) cochaperone located in both the cytoplasm and nucleus that stabilizes unliganded steroid receptors, controls the catalytic activity of certain kinases, regulates protein-DNA dynamics, and is upregulated in several cancers. We had previously shown that p23-overexpressing MCF-7 cells (MCF-7+p23) exhibit increased invasion without affecting the estrogen-dependent proliferative response, which suggests that p23 differentially regulates genes controlling processes linked to breast tumor metastasis. To gain a comprehensive view of the effects of p23 on estrogen receptor (ER)-dependent and -independent gene expression, we profiled mRNA expression from control versus MCF-7+p23 cells in the absence and presence of estrogen. A number of p23-sensitive target genes involved in metastasis and drug resistance were identified. Most striking is that many of these genes are also misregulated in invasive breast cancers, including PMP22, ABCC3, AGR2, Sox3, TM4SF1, and p8 (NUPR1). Upregulation of the ATP-dependent transporter ABCC3 by p23 conferred resistance to the chemotherapeutic agents etoposide and doxorubicin in MCF-7+p23 cells. MCF-7+p23 cells also displayed higher levels of activated Akt and an expanded phosphoproteome relative to control cells, suggesting that elevated p23 also enhances cytoplasmic signaling pathways. For breast cancer patients, tumor stage together with high cytoplasmic p23 expression more accurately predicted disease recurrence and mortality than did stage alone. High nuclear p23 was found to be associated with high cytoplasmic p23, therefore both may promote tumor progression and poor prognosis by increasing metastatic potential and drug resistance in breast cancer patients.
Collapse
Affiliation(s)
- Natalie E Simpson
- Department of Pharmacology, and NYU Cancer Institute, NYU School of Medicine, New York, New York 10016, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
198
|
Podolak I, Galanty A, Sobolewska D. Saponins as cytotoxic agents: a review. PHYTOCHEMISTRY REVIEWS : PROCEEDINGS OF THE PHYTOCHEMICAL SOCIETY OF EUROPE 2010; 9:425-474. [PMID: 20835386 PMCID: PMC2928447 DOI: 10.1007/s11101-010-9183-z] [Citation(s) in RCA: 379] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2010] [Accepted: 04/29/2010] [Indexed: 05/21/2023]
Abstract
Saponins are natural glycosides which possess a wide range of pharmacological properties including cytotoxic activity. In this review, the recent studies (2005-2009) concerning the cytotoxic activity of saponins have been summarized. The correlations between the structure and the cytotoxicity of both steroid and triterpenoid saponins have been described as well as the most common mechanisms of action.
Collapse
Affiliation(s)
- Irma Podolak
- Department of Pharmacognosy, Jagiellonian University, Medical College, Medyczna 9, 30-688 Cracow, Poland
| | - Agnieszka Galanty
- Department of Pharmacognosy, Jagiellonian University, Medical College, Medyczna 9, 30-688 Cracow, Poland
| | - Danuta Sobolewska
- Department of Pharmacognosy, Jagiellonian University, Medical College, Medyczna 9, 30-688 Cracow, Poland
| |
Collapse
|
199
|
Cytotoxic cycloartane triterpene and rare isomeric bisclerodane diterpenes from the leaves of Polyalthia longifolia var. pendula. Bioorg Med Chem Lett 2010; 20:5767-71. [PMID: 20732814 DOI: 10.1016/j.bmcl.2010.07.141] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2010] [Revised: 07/28/2010] [Accepted: 07/31/2010] [Indexed: 11/23/2022]
Abstract
A 24-methylenecycloartane-3 β, 16 β, 23 β-triol, Longitriol (1), rare bisclerodane imides, Longimide A (2) and previously known Longimide B (3) were isolated from ethanolic extract of the leaves of Polyalthia longifolia var. pendula. This is the first example of isolation of any cycloartane triterpene from this plant source. Structures were determined by extensive (1D and 2D NMR) spectroscopic data analysis combined with ESI MS/MS fragmentation and X-ray analysis. Furthermore, Compounds 1 and 2 were evaluated for their cytotoxic effects against four human cancer cell lines and found to be most active against cervical carcinoma cell lines with IC(50) value of 10.03 and 4.12 μg/mL, respectively.
Collapse
|
200
|
Qi J, Yao P, He F, Yu C, Huang C. Nanoparticles with dextran/chitosan shell and BSA/chitosan core—Doxorubicin loading and delivery. Int J Pharm 2010; 393:176-84. [DOI: 10.1016/j.ijpharm.2010.03.063] [Citation(s) in RCA: 141] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2009] [Revised: 03/04/2010] [Accepted: 03/31/2010] [Indexed: 11/29/2022]
|