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Yadav AK, Maharjan Shrestha R, Yadav PN. Anticancer mechanism of coumarin-based derivatives. Eur J Med Chem 2024; 267:116179. [PMID: 38340509 DOI: 10.1016/j.ejmech.2024.116179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 01/13/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024]
Abstract
The structural motif of coumarins is related with various biological activities and pharmacological properties. Both natural coumarin extracted from various plants or a new coumarin derivative synthesized by modification of the basic structure of coumarin, in vitro experiments showed that coumarins are a promising class of anti-tumor agents with high selectivity. Cancer is a complex and multifaceted group of diseases characterized by the uncontrolled and abnormal growth of cells in the body. This review focuses on the anticancer mechanism of various coumarins synthesized and isolated in more than a decade. Isopentenyloxycoumarins inhibit angiogenesis by reducing CCl2 chemokine levels. Ferulin C is a potent colchicine-binding agent that destabilizes microtubules, exhibiting antiproliferative and anti-metastatic effects in breast cancer cells through PAK1 and PAK2-mediated signaling. Trimers of triphenylethylene-coumarin hybrids demonstrated significant proliferation inhibition in HeLa, A549, K562, and MCF-7 cell lines. Platinum(IV) complexes with 4-hydroxycoumarin have the potential for high genotoxicity against tumor cells, inducing apoptosis in SKOV-3 cells by up-regulating caspase 3 and caspase 9 expression. Derivatives of 3-benzyl coumarin seco-B-ring induce apoptosis, mediated through the PI3K/Akt/mTOR signaling pathway. Sesquiterpene coumarins inhibit the efflux pump of multidrug resistance-associated protein. Coumarin imidazolyl derivatives inhibit the aromatase enzyme, a major contributor to estrogen overproduction in estrogen-dependent breast cancer.
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Affiliation(s)
- Anand Kumar Yadav
- Central Department of Chemistry, Tribhuvan University, Kathmandu, Nepal
| | | | - Paras Nath Yadav
- Central Department of Chemistry, Tribhuvan University, Kathmandu, Nepal.
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Novel Benzimidazole Derived Imine Ligand and Its Co(III) and Cu(II) Complexes as Anticancer Agents: Chemical Synthesis, DFT Studies, In Vitro and In Vivo Biological Investigations. Pharmaceuticals (Basel) 2023; 16:ph16010125. [PMID: 36678622 PMCID: PMC9866693 DOI: 10.3390/ph16010125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/02/2023] [Accepted: 01/03/2023] [Indexed: 01/18/2023] Open
Abstract
The emerging interest in the field of coordination chemistry and their biological applications has created a novel impact in the field of chemical biology. With this motivation, in this work we have synthesized a novel benzimidazole derived imine ligand, 2-((E)-((1H-benzo[d]-2-yl)methylimino)methyl)-4-fluorophenol (HBMF) and its Co(III) and Cu(II) complexes. The metal complexes (C1-C4) were synthesized in 2:1 (HBMF: metal ion) and 1:1:1 (HBMF: metal ion: 1,10-phen) ratios. Structural elucidations of all the synthesized compounds were performed using FT-IR, UV-Visible, NMR, Mass spectroscopy and elemental analysis techniques. A combination of first principles calculations and molecular dynamics simulations was applied to computationally investigate the structural, reactive, and spectroscopic properties of the newly synthesized HBMF ligand and its complexes with copper and cobalt metal ions. Quantum-mechanical calculations in this study were based on the density functional theory (DFT), while molecular dynamics (MD) simulations were based on the OPLS4 force field. The DFT calculations were used to obtain the reactive and spectroscopic properties of the ligand and its complexes, while molecular dynamics (MD) simulations were used to address the ligand's reactivity with water. Further, the in vitro anti-proliferative activity of the compounds was tested against the A549, Ehrlich-Lettre ascites carcinoma (EAC), SIHA and NIH3T3 cell lines. The biological results depicted that the compound C4, with molecular formula C27H23Cl2CoFN5O3 exhibited profound anti-proliferative activity against the EAC cell line with a significant IC50 value of 10 µm when compared to its parent ligand and other remaining metal complexes under study. Various assays of hematological parameters (alkaline phosphate, creatinine, urea, RBC and WBC) were performed, and significant results were obtained from the experiments. Furthermore, the effect of C4 on neovascularization was evaluated by stimulating the angiogenesis with rVEGF165, which was compared with non-tumor models. The EAC cells were cultured in vivo and administrated with 50 and 75 mg/kg of two doses and tumor parameters were evaluated.
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Jyothi M, Banumathi, Zabiulla, Sherapura A, Khamees HA, Prabhakar B, Khanum SA. Synthesis, structure analysis, DFT calculations and energy frameworks of new coumarin appended oxadiazoles, to regress ascites malignancy by targeting VEGF mediated angiogenesis. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Sherapura A, Malojirao VH, Thirusangu P, Sharath BS, Kandagalla S, Vigneshwaran V, Novak J, Ranganatha L, Ramachandra YL, Baliga SM, Khanum SA, Prabhakar BT. Anti-neoplastic pharmacophore benzophenone-1 coumarin (BP-1C) targets JAK2 to induce apoptosis in lung cancer. Apoptosis 2021; 27:49-69. [PMID: 34837562 DOI: 10.1007/s10495-021-01699-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/07/2021] [Indexed: 11/21/2022]
Abstract
Reigning of the abnormal gene activation associated with survival signalling in lung cancer leads to the anomalous growth and therapeutic failure. Targeting specific cell survival signalling like JAK2/STAT3 nexus has become a major focus of investigation to establish a target specific treatment. The 2-bromobenzoyl-4-methylphenoxy-acetyl hydra acetyl Coumarin (BP-1C), is new anti-neoplastic agent with apoptosis inducing capacity. The current study was aimed to develop antitumor phramacophore, BP-1C as JAK2 specific inhibitor against lung neoplastic progression. The study validates and identifies the molecular targets of BP-1C induced cell death. Cell based screening against multiple cancer cell lines identified, lung adenocarcinoma as its specific target through promotion of apoptosis. The BP-1C is able to induce, specific hall marks of apoptosis and there by conferring anti-neoplastic activity. Validation of its molecular mechanism, identified, BP-1C specifically targets JAK2Tyr1007/1008 phosphorylation, and inhibits its downstream STAT3Tyr705 signalling pathway to induce cell death. As a consequence, modulation in Akt/Src survival signal and altered expression of interwoven apoptotic genes were evident. The results were reproducible in an in-vivo LLC tumor model and in-ovo xenograft studies. The computational approaches viz, drug finger printing confers, BP-1C as novel class JAK2 inhibitor and molecular simulations studies assures its efficiency in binding with JAK2. Overall, BP-1C is a novel JAK2 inhibitor with experimental evidence and could be effectively developed into a promising drug for lung cancer treatment.
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Affiliation(s)
- Ankith Sherapura
- Molecular Biomedicine Laboratory, Postgraduate Department of Studies and Research in Biotechnology, Sahyadri Science College, Kuvempu University, Shivamogga, Karnataka, 577203, India
| | - Vikas H Malojirao
- Molecular Biomedicine Laboratory, Postgraduate Department of Studies and Research in Biotechnology, Sahyadri Science College, Kuvempu University, Shivamogga, Karnataka, 577203, India.,Division for DNA Repair Research, Department of Neurosurgery, Centre for Neuroregeneration, Houston Methodist, Fannin Street, Houston, TX, USA
| | - Prabhu Thirusangu
- Molecular Biomedicine Laboratory, Postgraduate Department of Studies and Research in Biotechnology, Sahyadri Science College, Kuvempu University, Shivamogga, Karnataka, 577203, India.,Department of Experimental Pathology and Laboratory Medicine, Mayo Clinic, Rochester, MN, USA
| | - B S Sharath
- School of System Biomedical Science and Department of Bioinformatics and Lifescience, Soongsil University, Seoul, South Korea
| | - Shivananda Kandagalla
- Laboratory of Computational Modelling of Drugs, Higher Medical and Biological School, South Ural State University, Chaikovskogo 20A, Chelyabinsk, Russia, 454008
| | - V Vigneshwaran
- Molecular Biomedicine Laboratory, Postgraduate Department of Studies and Research in Biotechnology, Sahyadri Science College, Kuvempu University, Shivamogga, Karnataka, 577203, India.,Department of Pharmacology and Centre for Lung and Vascular Biology, University of Illinois at Chicago, Chicago, 60612, USA
| | - Jurica Novak
- Laboratory of Computational Modelling of Drugs, Higher Medical and Biological School, South Ural State University, Chaikovskogo 20A, Chelyabinsk, Russia, 454008
| | - Lakshmi Ranganatha
- Department of Chemistry, The National Institute of Engineering, Mysuru, Karnataka, 570008, India
| | - Y L Ramachandra
- Department of Studies and Research in Biotechnology and Bioinformatics, Kuvempu University, Jnanasahyadri, Shankaraghatta, 577 451, India
| | - Shrinath M Baliga
- Department of Radiation Oncology, Mangalore Institute of Oncology, Mangalore, Karnataka, 575 002, India
| | - Shaukath Ara Khanum
- Department of Chemistry, Yuvaraja's College (Autonomous), University of Mysore, Mysuru, Karnataka, 570 005, India.
| | - B T Prabhakar
- Molecular Biomedicine Laboratory, Postgraduate Department of Studies and Research in Biotechnology, Sahyadri Science College, Kuvempu University, Shivamogga, Karnataka, 577203, India.
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Targeting HIF-1α by newly synthesized Indolephenoxyacetamide (IPA) analogs to induce anti-angiogenesis-mediated solid tumor suppression. Pharmacol Rep 2021; 73:1328-1343. [PMID: 33904146 DOI: 10.1007/s43440-021-00266-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 04/08/2021] [Accepted: 04/10/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Hypoxic microenvironment is a common feature of solid tumors, which leads to the promotion of cancer. The transcription factor, HIF-1α, expressed under hypoxic conditions stimulates tumor angiogenesis, favoring HIF-1α as a promising anticancer agent. On the other hand, synthetic Indolephenoxyacetamide derivatives are known for their pharmacological potentiality. With this background here, we have synthesized, characterized, and validated the new IPA (8a-n) analogs for anti-tumor activity. METHODS The new series of IPA (8a-n) were synthesized through a multi-step reaction sequence and characterized based on the different spectroscopic analysis FT-IR, 1H, 13C NMR, mass spectra, and elemental analyses. Cell-based screening of IPA (8a-n) was assessed by MTT assay. Anti-angiogenic efficacy of IPA (8k) validated through CAM, Rat corneal, tube formation and migration assay. The underlying molecular mechanism is validated through zymogram and IB studies. The in vivo anti-tumor activity was measured in the DLA solid tumor model. RESULTS Screening for anti-proliferative studies inferred, IPA (8k) is a lead molecule with an IC50 value of ˜5 μM. Anti-angiogenic assays revealed the angiopreventive activity through inhibition of HIF-1α and modulation downstream regulatory genes, VEGF, MMPs, and P53. The results are confirmative in an in vivo solid tumor model. CONCLUSION The IPA (8k) is a potent anti-proliferative molecule with anti-angiogenic activity and specifically targets HIF1α, thereby modulates its downstream regulatory genes both in vitro and in vivo. The study provides scope for new target-specific drug development against HIF-1α for the treatment of solid tumors.
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Phan PTT, Nguyen HNT, Kim SN, Pham TAN. Synthesis and anti-methicillin-resistant Staphylococcus aureus activity of 5,7-dibromo-2-benzoylbenzofurans alone and in combination with antibiotics. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1855354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
| | - Hong-Nhung T. Nguyen
- Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Son N. Kim
- Faculty of Pharmacy, Lac Hong University, Bien Hoa City, Vietnam
| | - Tuan-Anh N. Pham
- Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
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Saidi L, Rocha DHA, Talhi O, Bentarzi Y, Nedjar‐Kolli B, Bachari K, Almeida Paz FA, Helguero LA, Silva AMS. Synthesis of Benzophenones and in vitro Evaluation of Their Anticancer Potential in Breast and Prostate Cancer Cells. ChemMedChem 2019; 14:1041-1048. [DOI: 10.1002/cmdc.201900127] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 03/31/2019] [Indexed: 12/24/2022]
Affiliation(s)
- Lydia Saidi
- Laboratory of Applied Organic Chemistry, Faculty of ChemistryHouari Boumediene University of Sciences and Technology, USTHB, BP 32, El-Alia Bab-Ezzouar 16111 Algiers Algeria
| | - Djenisa H. A. Rocha
- QOPNA and LAQV-REQUIMTE, Department of ChemistryUniversity of Aveiro 3810-193 Aveiro Portugal
- Institute of Biomedicine (iBiMED)Department of Medical SciencesUniversity of Aveiro 3810-193 Aveiro Portugal
| | - Oualid Talhi
- QOPNA and LAQV-REQUIMTE, Department of ChemistryUniversity of Aveiro 3810-193 Aveiro Portugal
- Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques (CRAPC) BP384 Bou-Ismail 42004 Tipaza Algeria
| | - Yamina Bentarzi
- Laboratory of Applied Organic Chemistry, Faculty of ChemistryHouari Boumediene University of Sciences and Technology, USTHB, BP 32, El-Alia Bab-Ezzouar 16111 Algiers Algeria
| | - Bellara Nedjar‐Kolli
- Laboratory of Applied Organic Chemistry, Faculty of ChemistryHouari Boumediene University of Sciences and Technology, USTHB, BP 32, El-Alia Bab-Ezzouar 16111 Algiers Algeria
| | - Khaldoun Bachari
- Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques (CRAPC) BP384 Bou-Ismail 42004 Tipaza Algeria
| | | | - Luisa A. Helguero
- Institute of Biomedicine (iBiMED)Department of Medical SciencesUniversity of Aveiro 3810-193 Aveiro Portugal
| | - Artur M. S. Silva
- QOPNA and LAQV-REQUIMTE, Department of ChemistryUniversity of Aveiro 3810-193 Aveiro Portugal
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N. SK, G. K, Bodke YD, Malojirao VH, T. R. RN, Kandagalla S, B. T. P. Synthesis, characterization and tumor inhibitory activity of a novel Pd(ii) complex derived from methanethiol-bridged (2-((1H-benzo[d]imidazol-2-yl)methylthio)-1H-benzo[d]imidazol-6-yl)(phenyl)methanone. NEW J CHEM 2019. [DOI: 10.1039/c8nj03057j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This manuscript demonstrates the synthesis and tumor inhibitory activity of (2-((1H-benzo[d]imidazol-2-yl)methylthio)-1H-benzo[d]imidazol-6-yl)(phenyl)methanone and its Pd(ii) complex.
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Affiliation(s)
- Sunil Kumar N.
- Department of Chemistry
- Sahyadri Science College
- Kuvempu University
- Shimoga
- India
| | - Krishnamurthy G.
- Department of Chemistry
- Sahyadri Science College
- Kuvempu University
- Shimoga
- India
| | - Yadav D. Bodke
- Department of Industrial Chemistry
- Kuvempu University
- Shankarghatta
- India
| | - Vikas H. Malojirao
- Molecular Biomedicine Laboratory
- Postgraduate Department of Studies and Research in Biotechnology
- Sahyadri Science College
- Kuvempu University
- Shimoga
| | - Ravikumar Naik T. R.
- Centre for Nano Science and Engineering (CeNSE)
- Indian Institute of Science
- Bangalore
- India
| | | | - Prabhakar B. T.
- Molecular Biomedicine Laboratory
- Postgraduate Department of Studies and Research in Biotechnology
- Sahyadri Science College
- Kuvempu University
- Shimoga
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Carlos LR, Loro H, Lago AF, Dávalos JZ. Gas-phase proton affinity and basicity of hydroxybenzophenones. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.10.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Surana K, Chaudhary B, Diwaker M, Sharma S. Benzophenone: a ubiquitous scaffold in medicinal chemistry. MEDCHEMCOMM 2018; 9:1803-1817. [PMID: 30542530 DOI: 10.1039/c8md00300a] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 08/23/2018] [Indexed: 12/21/2022]
Abstract
The benzophenone scaffold represents a ubiquitous structure in medicinal chemistry because it is found in several naturally occurring molecules which exhibit a variety of biological activities, such as anticancer, anti-inflammatory, antimicrobial, and antiviral. In addition, various synthetic benzophenone motifs are present in marketed drugs. They also represent important ingredients in perfumes and can act as photoinitiators. This review will provide an overview of benzophenone moieties with medicinal aspects synthesized in the last 15 years and will cover the most potent molecule in each report. In this review, only benzophenones with substitutions on their aryl rings, i.e. diphenyl ketone analogues, have been covered.
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Affiliation(s)
- Khemchand Surana
- Department of Medicinal Chemistry , National Institute of Pharmaceutical Education and Research , Ahmedabad (NIPER-A) , Gandhinagar , Gujarat - 382355 , India .
| | - Bharatkumar Chaudhary
- Department of Medicinal Chemistry , National Institute of Pharmaceutical Education and Research , Ahmedabad (NIPER-A) , Gandhinagar , Gujarat - 382355 , India .
| | - Monika Diwaker
- Department of Medicinal Chemistry , National Institute of Pharmaceutical Education and Research , Ahmedabad (NIPER-A) , Gandhinagar , Gujarat - 382355 , India .
| | - Satyasheel Sharma
- Department of Medicinal Chemistry , National Institute of Pharmaceutical Education and Research , Ahmedabad (NIPER-A) , Gandhinagar , Gujarat - 382355 , India .
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Mohammed YHE, Ara Khanum S. The critical role of novel benzophenone analogs on tumor growth inhibition targeting angiogenesis and apoptosis. MEDCHEMCOMM 2018; 9:639-656. [PMID: 30108955 PMCID: PMC6072443 DOI: 10.1039/c7md00593h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 02/14/2018] [Indexed: 11/21/2022]
Abstract
In modern biology, one of the major topics of importance is progress in anti-cancer drugs with specific targets. The angiopreventive and in vitro tumor inhibition activities of novel synthetic benzophenone analogs have been investigated intensively and explored in a very systematic way. Novel benzophenone analogs (9a-d and 10a-d) substituted with methyl, chloro and fluoro groups at different positions on an identical chemical backbone and incorporating variations in the number of substituents have been synthesized in a multistep process and characterized. In this study, we further evaluate the newly synthesized compounds for their cytotoxic and anti-proliferative effects against A549, HeLa and MCF-7 cells. The potent lead compound was further assessed for anti-angiogenic effects. Through the structure-activity relationship, we found that an increase in the number of methyl, chloro and fluoro groups in a benzophenone ring on compound 9d resulted in higher potency compared to other compounds. Tumor inhibition was notably promoted, and this was reflected in effects on neovessel formation in in vivo systems, such as the CAM. Compound 9d interacts with rVEGF through hydrogen bonds in silico, thereby down-regulating the expression of VEGF in angiogenesis. From our investigation, it is suggested on the basis of clonogenesis and cell migration assays that compound 9d has the potency to exhibit prolonged activity against cancer progression, through cell cycle arrest at the G2/M phase. In addition, compound 9d inhibits A549 cells through caspase-activated DNase-mediated apoptosis.
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Affiliation(s)
- Yasser Hussein Eissa Mohammed
- Department of Chemistry , Yuvaraja's College , University of Mysore , Mysore -570005 , Karnataka , India . ; ; Tel: +91 99018 88755
- Department of Biochemistry , Faculty of Applied Science College , University of Hajjah , Yemen
| | - Shaukath Ara Khanum
- Department of Chemistry , Yuvaraja's College , University of Mysore , Mysore -570005 , Karnataka , India . ; ; Tel: +91 99018 88755
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Synthesis and Bioactivity Evaluation of Novel 2-Salicyloylbenzofurans as Antibacterial Agents. Molecules 2017; 22:molecules22050687. [PMID: 28441350 PMCID: PMC6154660 DOI: 10.3390/molecules22050687] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 04/16/2017] [Accepted: 04/21/2017] [Indexed: 01/01/2023] Open
Abstract
In order to discover new antibacterial agents, series of 2-salicyloylbenzofuran derivatives were designed, synthesized and evaluated for their antibacterial activities against three Gram-(+) strains (methicillin-sensitive Staphylococcus aureus (MSSA) ATCC 29213, methicillin-resistant Staphylococcus aureus (MRSA) ATCC 43300, and Streptococcus faecalis (S. faecalis) ATCC 29212) and one Gram-(-) strain (Escherichia coli (E. coli) ATCC 25922). The 2-salicyloylbenzofuran heterocycles were generated by Rap-Stoermer condensation of salicylaldehydes with phenacyl bromides and then converted to diverse O-ether derivatives by Williamson synthesis. The targeted products were screened for in vitro qualitative (zone of inhibition) and quantitative (MIC) antibacterial activities by agar well diffusion assay and agar dilution method. Amongst the compounds, those bearing carboxylic acid functional group were found to exhibit reasonable activity against Gram-(+) bacterial strains including S. faecalis, MSSA and MRSA with the most potent antibacterial agent 8h (MICs = 0.06-0.12 mM). Besides, the 2-salicyloylbenzofurans partly displayed inhibitory activity against MRSA with the best MICs = 0.14 mM (8f) and 0.12 mM (8h). Finally, the antibacterial results preliminarily suggested that the substituent bearing carboxylic acid group at salicyloyl-C2 and the bromine atoms on the benzofuran moiety seem to be the functionality necessary for antibacterial activities.
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Dai X, Ji Y, Jiang P, Sun X. Marsdenia tenacissima extract suppresses tumor growth and angiogenesis in A20 mouse lymphoma. Oncol Lett 2017; 13:2897-2902. [PMID: 28521395 PMCID: PMC5431395 DOI: 10.3892/ol.2017.5831] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 09/27/2016] [Indexed: 02/01/2023] Open
Abstract
Marsdenia tenacissima (MT), a traditional Chinese medicine, has been utilized in the treatment of a variety of malignant conditions for decades, but the underlying mechanism remains unclear. Angiogenesis, new blood vessel formation by nearby endothelial cells (ECs) from pre-existing vessels, plays a key role in cancer growth. In the present study, the effects of MT extract (MTE) on EC proliferation and apoptosis in vitro, and on A20 mouse lymphoma growth and angiogenesis in vivo were investigated. MTE exhibited an anti-proliferative effect on the ECs, with a half maximal inhibitory concentration of 11.91±0.24 µl/ml. Acridine orange/propidium iodide staining indicated that cell apoptosis increased with MTE concentration. Flow cytometry revealed that the EC apoptosis rates induced by 0, 6.25, 12.5 and 25 µl/ml MTE were 4.8, 23.3, 49.8 and 92.3%, respectively. In vivo, the volume and weight of the A20 solid tumors were significantly inhibited following administration of 300 µl MTE per day for 14 days (P<0.05). MTE showed extended survivability and a satisfactory security. Subsequent to treatment with MTE, peritumorous angiogenesis was significantly reduced, with lower microvessel density (P<0.05) was quantified by hemotoxylin and eosin staining. Moreover, serum vascular endothelial growth factor, matrix metalloproteinase (MMP)-2 and MMP-9 expression at the protein level in the MTE-treated group, quantified using an ELISA, was significantly lower than that of the control (P<0.05). In a chick chorioallantoic membrane assay, 12.5 and 25 µl/ml MTE distinctly decreased the level of angiogenesis (P<0.05). In conclusion, MTE exhibited potent anti-lymphoma efficacy in vitro and this may be associated with its effects against tumor angiogenesis.
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Affiliation(s)
- Xingbin Dai
- Department of Hematology, Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu 210029, P.R. China
| | - Yanhua Ji
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu 210009, P.R. China
| | - Pengjun Jiang
- Department of Hematology, Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu 210029, P.R. China
| | - Xuemei Sun
- Department of Hematology, Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu 210029, P.R. China
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A tumoural angiogenic gateway blocker, Benzophenone-1B represses the HIF-1α nuclear translocation and its target gene activation against neoplastic progression. Biochem Pharmacol 2016; 125:26-40. [PMID: 27838496 DOI: 10.1016/j.bcp.2016.11.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 11/07/2016] [Indexed: 11/21/2022]
Abstract
Hypoxia is an important module in all solid tumours to promote angiogenesis, invasion and metastasis. Stabilization and subsequent nuclear localization of HIF-1α subunits result in the activation of tumour promoting target genes such as VEGF, MMPs, Flt-1, Ang-1 etc. which plays a pivotal role in adaptation of tumour cells to hypoxia. Increased HIF-α and its nuclear translocation have been correlated with pronounced angiogenesis, aggressive tumour growth and poor patient prognosis leading to current interest in HIF-1α as an anticancer drug target. Benzophenone-1B ([4-(1H-benzimidazol-2-ylmethoxy)-3,5-dimethylphenyl]-(4-methoxyphenyl) methanone, or BP-1B) is a new antineoplastic agent with potential angiopreventive effects. Current investigation reports the cellular biochemical modulation underlying BP-1B cytotoxic/antiangiogenic effects. Experimental evidences postulate that BP-1B exhibits the tumour specific cytotoxic actions against various cancer types with prolonged action. Moreover BP-1B efficiently counteracts endothelial cell capillary formation in in-vitro, in-vivo non-tumour and tumour angiogenic systems. Molecular signaling studies reveal that BP-1B arrests nuclear translocation of HIF-1α devoid of p42/44 pathway under CoCl2 induced hypoxic conditions in various cancer cells thereby leading to abrogated HIF-1α dependent activation of VEGF-A, Flt-1, MMP-2, MMP -9 and Ang-1 angiogenic factors resulting in retarded cell migration and invasions. The in-vitro results were reproducible in the reliable in-vivo solid tumour model. Taken together, we conclude that BP-1B impairs angiogenesis by blocking nuclear localization of HIF-1α which can be translated into a potent HIF-1α inhibitor.
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Thirusangu P, Vigneshwaran V, Prashanth T, Vijay Avin BR, Malojirao VH, Rakesh H, Khanum SA, Mahmood R, Prabhakar BT. BP-1T, an antiangiogenic benzophenone-thiazole pharmacophore, counteracts HIF-1 signalling through p53/MDM2-mediated HIF-1α proteasomal degradation. Angiogenesis 2016; 20:55-71. [PMID: 27743086 DOI: 10.1007/s10456-016-9528-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 10/07/2016] [Indexed: 12/16/2022]
Abstract
Hypoxia is a feature of all solid tumours, contributing to tumour progression. Activation of HIF-1α plays a critical role in promoting tumour angiogenesis and metastasis. Since its expression is positively correlated with poor prognosis for cancer patients, HIF-1α is one of the most convincing anticancer targets. BP-1T is a novel antiproliferative agent with promising antiangiogenic effects. In the present study, the molecular mechanism underlying cytotoxic/antiangiogenic effects of BP-1T on tumour/non-tumour angiogenesis was evaluated. Evidences show that BP-1T exhibits potent cytotoxicity with prolonged activity and effectively regressed neovessel formation both in reliable non-tumour and tumour angiogenic models. The expression of CoCl2-induced HIF-1α was inhibited by BP-1T in various p53 (WT)-expressing cancer cells, including A549, MCF-7 and DLA, but not in mutant p53-expressing SCC-9 cells. Mechanistically, BP-1T mediates the HIF-1α proteasomal degradation by activating p53/MDM2 pathway and thereby downregulated HIF-1α-dependent angiogenic genes such as VEGF-A, Flt-1, MMP-2 and MMP-9 under hypoxic condition of in vitro and in vivo solid tumour, eventually leading to abolition of migration and invasion. Based on these observations, we conclude that BP-1T acts on HIF-1α degradation through p53/MDM2 proteasome pathway.
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Affiliation(s)
- Prabhu Thirusangu
- Molecular Biomedicine Laboratory, Postgraduate Department of Studies and Research in Biotechnology, Sahyadri Science College (Autonomous), Kuvempu University, Shivamogga, Karnataka, 577203, India
| | - V Vigneshwaran
- Molecular Biomedicine Laboratory, Postgraduate Department of Studies and Research in Biotechnology, Sahyadri Science College (Autonomous), Kuvempu University, Shivamogga, Karnataka, 577203, India
| | - T Prashanth
- Department of Chemistry, Yuvaraja's College (Autonomous), University of Mysore, Mysore, Karnataka, 570 005, India
| | - B R Vijay Avin
- Molecular Biomedicine Laboratory, Postgraduate Department of Studies and Research in Biotechnology, Sahyadri Science College (Autonomous), Kuvempu University, Shivamogga, Karnataka, 577203, India
- Department of Pharmacology, Center for Lung and Vascular Biology, University of Illinois at Chicago, Chicago, IL, USA
| | - Vikas H Malojirao
- Molecular Biomedicine Laboratory, Postgraduate Department of Studies and Research in Biotechnology, Sahyadri Science College (Autonomous), Kuvempu University, Shivamogga, Karnataka, 577203, India
| | - H Rakesh
- Molecular Biomedicine Laboratory, Postgraduate Department of Studies and Research in Biotechnology, Sahyadri Science College (Autonomous), Kuvempu University, Shivamogga, Karnataka, 577203, India
| | - Shaukath Ara Khanum
- Department of Chemistry, Yuvaraja's College (Autonomous), University of Mysore, Mysore, Karnataka, 570 005, India
| | - Riaz Mahmood
- Postgraduate Department of Studies and Research in Biotechnology and Bioinformatics, Kuvempu University, Shankaraghatta, Shivamogga, Karnataka, 577203, India
| | - B T Prabhakar
- Molecular Biomedicine Laboratory, Postgraduate Department of Studies and Research in Biotechnology, Sahyadri Science College (Autonomous), Kuvempu University, Shivamogga, Karnataka, 577203, India.
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Synthesis and antiproliferative activity of benzophenone tagged pyridine analogues towards activation of caspase activated DNase mediated nuclear fragmentation in Dalton’s lymphoma. Bioorg Chem 2016; 65:73-81. [DOI: 10.1016/j.bioorg.2016.02.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2016] [Revised: 02/01/2016] [Accepted: 02/02/2016] [Indexed: 11/17/2022]
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17
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Zabiulla, Shamanth Neralagundi HG, Bushra Begum A, Prabhakar BT, Khanum SA. Design and synthesis of diamide-coupled benzophenones as potential anticancer agents. Eur J Med Chem 2016; 115:342-51. [PMID: 27027818 DOI: 10.1016/j.ejmech.2016.03.040] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 03/15/2016] [Accepted: 03/16/2016] [Indexed: 12/19/2022]
Abstract
A series of diamide-coupled benzophenone, 2-(4-benzoyl-phenoxy)-N-{2-[2-(4-benzoyl-phenoxy)-acetylamino]-phenyl}-acetamide analogues (9a-l) were synthesized by multistep reactions and all compounds were well characterized. Among the series (9a-l), compound 9k with three methyl groups at ortho position in rings A, B, and D and bromo group at the para position in ring E was selected as a lead compound by screening through multiple cancer cell types by in-vitro cytotoxic and antiproliferative assay systems. Also, the cytotoxic nature of the compound 9k resulted the regression of the tumor growth in-vivo, which could be due to decreased vascularisation in the peritoneum lining of the mice which regress the tumor growth. The results were reconfirmed in-vivo chorioallantoic membrane model which indicates a scope of developing 9k into potent anticancer drug in near future.
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Affiliation(s)
- Zabiulla
- Department of Chemistry, Yuvaraja's College (Autonomous), University of Mysore, Mysore, Karnataka, India
| | - H G Shamanth Neralagundi
- Molecular Biomedicine Laboratory, Postgraduate Department of Studies and Research in Biotechnology, Sahyadri Science College (Autonomous), Kuvempu University, Karnataka, India
| | - A Bushra Begum
- Department of Chemistry, Yuvaraja's College (Autonomous), University of Mysore, Mysore, Karnataka, India
| | - B T Prabhakar
- Molecular Biomedicine Laboratory, Postgraduate Department of Studies and Research in Biotechnology, Sahyadri Science College (Autonomous), Kuvempu University, Karnataka, India
| | - Shaukath Ara Khanum
- Department of Chemistry, Yuvaraja's College (Autonomous), University of Mysore, Mysore, Karnataka, India.
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Al-Ghorbani M, Pavankumar GS, Naveen P, Thirusangu P, Prabhakar BT, Khanum SA. Synthesis and an angiolytic role of novel piperazine-benzothiazole analogues on neovascularization, a chief tumoral parameter in neoplastic development. Bioorg Chem 2016; 65:110-7. [PMID: 26918263 DOI: 10.1016/j.bioorg.2016.02.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 02/18/2016] [Accepted: 02/19/2016] [Indexed: 11/17/2022]
Abstract
A novel series of benzoic acid N'-[2-(4-benzothiazol-2-yl-piperazin-1-yl)-acetyl]-hydrazides 6a-j were synthesized and characterized by IR, (1)H, (13)C NMR, elemental and mass spectral analyses. The in-vitro cytotoxicity and cell viability assay of the synthesized compounds 6a-j were evaluated against Dalton's lymphoma ascites (DLA) cells. Our results showed that compound 6c with a bromo group on phenyl ring has showed promising antiproliferative efficacy. Further investigation of compound 6c on in-vivo treatment model depicts the increased tumor suppression through inhibition of angiogenesis.
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Affiliation(s)
- Mohammed Al-Ghorbani
- Department of Chemistry, Yuvaraja's College, University of Mysore, Karnataka, India
| | - G S Pavankumar
- Molecular Biomedicine Laboratory, Postgraduate Department of Studies and Research in Biotechnology, Sahyadri Science College (Autonomous), Kuvempu University, Karnataka, India
| | - P Naveen
- Department of Chemistry, Yuvaraja's College, University of Mysore, Karnataka, India
| | - Prabhu Thirusangu
- Molecular Biomedicine Laboratory, Postgraduate Department of Studies and Research in Biotechnology, Sahyadri Science College (Autonomous), Kuvempu University, Karnataka, India
| | - B T Prabhakar
- Molecular Biomedicine Laboratory, Postgraduate Department of Studies and Research in Biotechnology, Sahyadri Science College (Autonomous), Kuvempu University, Karnataka, India
| | - Shaukath Ara Khanum
- Department of Chemistry, Yuvaraja's College, University of Mysore, Karnataka, India.
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Design and synthesis of novel 4′-demethyl-4-deoxypodophyllotoxin derivatives as potential anticancer agents. Bioorg Med Chem Lett 2016; 26:1360-4. [DOI: 10.1016/j.bmcl.2015.06.089] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2015] [Revised: 05/30/2015] [Accepted: 06/24/2015] [Indexed: 01/23/2023]
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Synthesis and evaluation of novel benzophenone-thiazole derivatives as potent VEGF-A inhibitors. Eur J Med Chem 2014; 87:274-83. [DOI: 10.1016/j.ejmech.2014.09.069] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2014] [Revised: 09/19/2014] [Accepted: 09/22/2014] [Indexed: 11/23/2022]
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Vijay Avin B, Thirusangu P, Ramesh C, Vigneshwaran V, Prashanth Kumar M, Mahmood R, Prabhakar B. Screening for the modulation of neovessel formation in non-tumorigenic and tumorigenic conditions using three different plants native to Western ghats of India. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.biomag.2014.07.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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22
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Gurupadaswamy H, Thirusangu P, Vijay Avin B, Vigneshwaran V, Prashanth Kumar M, Abhishek T, Lakshmi Ranganatha V, Khanum S, Prabhakar B. DAO-9 (2,5-di(4-aryloylaryloxymethyl)-1,3,4-oxadiazole) exhibits p53 induced apoptogenesis through caspase-3 mediated endonuclease activity in murine carcinoma. Biomed Pharmacother 2014; 68:791-7. [DOI: 10.1016/j.biopha.2014.07.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 07/02/2014] [Indexed: 12/16/2022] Open
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Girish V, Khanum NF, Gurupadaswamy HD, Khanum SA. Synthesis and evaluation of in vitro antimicrobial activity of novel 2-[2-(aroyl)aroyloxy]methyl-1,3,4-oxadiazoles. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2014. [DOI: 10.1134/s1068162014030066] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Vijay Avin BR, Thirusangu P, Lakshmi Ranganatha V, Firdouse A, Prabhakar BT, Khanum SA. Synthesis and tumor inhibitory activity of novel coumarin analogs targeting angiogenesis and apoptosis. Eur J Med Chem 2014; 75:211-21. [PMID: 24534537 DOI: 10.1016/j.ejmech.2014.01.050] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 01/17/2014] [Accepted: 01/18/2014] [Indexed: 11/27/2022]
Abstract
A sequence of coumarin analogs 5a-j was obtained by multi step synthesis from hydroxy benzophenones (1a-j). The in vitro antiproliferative effect of the title compounds was tested against Ehrlich ascites carcinoma (EAC) and Daltons lymphoma ascites (DLA) cell lines. Among the series, compound 5c with bromo group in the benzophenone moiety was endowed with excellent antiproliferative potency with significant IC50 value. Further, in vivo antitumor effect of compound 5c against murine EAC and solid DL tumor model system was evident by the extended survivality. The tumor inhibitory mechanism of compound 5c was due to the antiangiogenesis and promotion of apoptosis. These results suggest possible applications of compound 5c which could be developed as a potent anticancer drug in the near future.
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Affiliation(s)
- B R Vijay Avin
- Molecular Biomedicine Laboratory, Postgraduate Department of Studies and Research in Biotechnology, Sahyadri Science College (Autonomous), Kuvempu University, Shimoga 577203, Karnataka, India
| | - Prabhu Thirusangu
- Molecular Biomedicine Laboratory, Postgraduate Department of Studies and Research in Biotechnology, Sahyadri Science College (Autonomous), Kuvempu University, Shimoga 577203, Karnataka, India
| | - V Lakshmi Ranganatha
- Department of Chemistry, Yuvaraja's College (Autonomous), University of Mysore, Mysore 570 005, Karnataka, India
| | - Aiyesha Firdouse
- Department of Biochemistry, Yuvaraja's College (Autonomous), University of Mysore, Mysore 570 005, Karnataka, India
| | - B T Prabhakar
- Molecular Biomedicine Laboratory, Postgraduate Department of Studies and Research in Biotechnology, Sahyadri Science College (Autonomous), Kuvempu University, Shimoga 577203, Karnataka, India
| | - Shaukath Ara Khanum
- Department of Chemistry, Yuvaraja's College (Autonomous), University of Mysore, Mysore 570 005, Karnataka, India.
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Patra S, Muthuraman MS. Gracilaria edulis extract induces apoptosis and inhibits tumor in Ehrlich ascites tumor cells in vivo. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 13:331. [PMID: 24274337 PMCID: PMC4222716 DOI: 10.1186/1472-6882-13-331] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 11/22/2013] [Indexed: 12/11/2022]
Abstract
BACKGROUND Marine environment is inestimable for their chemical and biological diversity and therefore is an extraordinary resource for the discovery of new anticancer drugs. Recent development in elucidation of the mechanism and therapeutic action of natural products helped to evaluate for their potential activity. METHODS We evaluated Gracilaria edulis J. Ag (Brown algae), for its antitumor potential against the Ehrlich ascites tumor (EAT) in vivo and in vitro. Cytotoxicity evaluation of Ethanol Extract of Gracilaria edulis (EEGE) using EAT cells showed significant activity. In vitro studies indicated that EEGE cytotoxicity to EAT cells is mediated through its ability to produce reactive oxygen species (ROS) and therefore decreasing intracellular glutathione (GSH) levels may be attributed to oxidative stress. RESULTS Apoptotic parameters including Annexin-V positive cells, increased levels of DNA fragmentation and increased caspase-2, caspase-3 and caspase-9 activities indicated the mechanism might be by inducing apoptosis. Intraperitoneally administration of EEGE to EAT-bearing mice helped to increase the lifespan of the animals significantly inhibited tumor growth and increased survival of mice. Extensive hematology, biochemistry and histopathological analysis of liver and kidney indicated that daily doses of EEGE up to 300 mg/kg for 35 days are well tolerated and did not cause hematotoxicity nor renal or hepatotoxicity. CONCLUSION Comprehensive antitumor analysis in animal model and in Ehrlich Ascites Tumor cells was done including biochemical, and pathological evaluations indicate antitumor activity of the extract and non toxic in vivo. It was evident that the mechanism explains the apoptotic activity of the algae extract.
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Affiliation(s)
- Satyajit Patra
- Medical University of the Americas, Charlestown, Nevis, West Indies
| | - Meenakshi Sundaram Muthuraman
- Department of Biotechnology, School of Chemical and Biotechnology, SASTRA University Thanjavur, 613401, TamilNadu, India
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Lakshmi Ranganatha V, Zameer F, Meghashri S, Rekha ND, Girish V, Gurupadaswamy HD, Khanum SA. Design, Synthesis, and Anticancer Properties of Novel Benzophenone-Conjugated Coumarin Analogs. Arch Pharm (Weinheim) 2013; 346:901-11. [DOI: 10.1002/ardp.201300298] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2013] [Revised: 09/01/2013] [Accepted: 09/05/2013] [Indexed: 11/06/2022]
Affiliation(s)
- V. Lakshmi Ranganatha
- Department of Chemistry; Yuvaraja's College; University of Mysore; Mysore Karnataka India
| | - Farhan Zameer
- Mahajana Life Science Research Laboratory, Department of Biotechnology, Microbiology and Biochemistry; Mahajana Research Foundation, Pooja Bhagavat Memorial Mahajana Post-Graduate Centre; Affiliated to University of Mysore, Metagalli Mysore Karnataka India
| | - S. Meghashri
- Pronet Informatics Pvt. Ltd; Bangalore Karnataka India
| | - N. D. Rekha
- Department of Studies in Biotechnology; JSS College of Arts, Commerce and Science; Mysore Karnataka India
| | - V. Girish
- Department of Chemistry; Yuvaraja's College; University of Mysore; Mysore Karnataka India
| | - H. D. Gurupadaswamy
- Department of Chemistry; Yuvaraja's College; University of Mysore; Mysore Karnataka India
| | - Shaukath Ara Khanum
- Department of Chemistry; Yuvaraja's College; University of Mysore; Mysore Karnataka India
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27
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Ranganatha VL, Vijay Avin BR, Thirusangu P, Prashanth T, Prabhakar BT, Khanum SA. Synthesis, angiopreventive activity, and in vivo tumor inhibition of novel benzophenone-benzimidazole analogs. Life Sci 2013; 93:904-11. [PMID: 24135459 DOI: 10.1016/j.lfs.2013.10.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 09/25/2013] [Accepted: 10/01/2013] [Indexed: 11/30/2022]
Abstract
AIM The development of anticancer drugs with specific targets is of prime importance in modern biology. This study investigates the angiopreventive and in vivo tumor inhibition activities of novel synthetic benzophenone-benzimidazole analogs. MAIN METHODS The multistep synthesis of novel benzophenone-benzimidazole analogs (8a-n) allowing substitution with methoxy, methyl and halogen groups at different positions on the identical chemical backbone and the variations in the number of substituents were synthesized and characterized. The newly synthesized compounds were further evaluated for cytotoxic and antiproliferative effects against Ehrlich ascites carcinoma (EAC) cells. The potent lead compounds were further assessed for antiangiogenic effects in a CAM model and a tumor-induced vasculature in vivo model. The effect of angioprevention on tumor growth was verified in a mouse model. KEY FINDINGS The cytotoxicity studies revealed that compounds 8f and 8n are strongly cytotoxic. Analyzing the structure-activity relationship, we found that an increase in the number of methyl groups in addition to methoxy substitution at the para position of the benzoyl ring in compound 8n resulted in higher potency compared to 8f. Furthermore, neovessel formation in in vivo systems, such as the chorioallantoic membrane (CAM) and tumor-induced mice peritoneum models, was significantly suppressed and reflected the tumor inhibition observed in mice. SIGNIFICANCE These results suggest the potential clinical application of compound 8n as an antiangiogenic drug for cancer therapy.
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Affiliation(s)
- V Lakshmi Ranganatha
- Department of Chemistry, Yuvaraj's College (Autonomous), University of Mysore, Mysore 570 005, Karnataka, India
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Gurupadaswamy HD, Girish V, Kavitha CV, Raghavan SC, Khanum SA. Synthesis and evaluation of 2,5-di(4-aryloylaryloxymethyl)-1,3,4-oxadiazoles as anti-cancer agents. Eur J Med Chem 2013; 63:536-43. [PMID: 23535322 DOI: 10.1016/j.ejmech.2013.02.040] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2012] [Revised: 01/21/2013] [Accepted: 02/28/2013] [Indexed: 11/16/2022]
Abstract
A series of 2,5-di(4-aryloylaryloxymethyl)-1,3,4-oxadiazoles 9a-j were obtained via multistep synthesis from hydroxybenzophenones 4a-e. The cytotoxicity of compounds 9a-j was evaluated against human leukemia cell lines (K562 and CEM). The compounds exhibited moderate to good anti-cancer activity with compounds 9b and 9i having a chloro group exhibiting the best activity (IC50 = 10 μM). Compound 9i exhibited activity against both the cell lines and 9b only exhibited activity against CEM. Further, a lactate dehydrogenase (LDH) assay and DNA fragmentation studies of the compounds 9a-j were also performed.
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Affiliation(s)
- H D Gurupadaswamy
- Department of Chemistry, Yuvaraja's College Mysore, University of Mysore, Mysore 570 006, India
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Azab HA, Hussein BH, El-Azab MF, Gomaa M, El-Falouji AI. Bis(acridine-9-carboxylate)-nitro-europium(III) dihydrate complex a new apoptotic agent through Flk-1 down regulation, caspase-3 activation and oligonucleosomes DNA fragmentation. Bioorg Med Chem 2013. [DOI: 10.1016/j.bmc.2012.10.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Prashanth T, Ranganatha VL, Usha MK, Khanum SA, Revannasiddaiah D, Anthal S, Kant R, Gupta VK. Ethyl 2-[4-(2-chloro-benzo-yl)-2,6-di-methyl-phen-oxy]ethano-ate. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o2435. [PMID: 22904883 PMCID: PMC3414350 DOI: 10.1107/s1600536812030693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2012] [Accepted: 07/05/2012] [Indexed: 11/23/2022]
Abstract
The asymmetric unit of the title compound, C(19)H(19)ClO(4), contains two independent mol-ecules. The dihedral angles between the benzene rings are 63.41 (8) and 61.41 (9)°. Adjacent mol-ecules of different types are inter-connected in pairs through π-π inter-actions between their central benzene rings [centroid-centroid separation = 3.801 (2) Å, inter-planar spacing = 3.605 (2) Å, centroid shift = 1.204 (2) Å]. Finally, C-H⋯O hydrogen bonds link these dimers into bilayers parallel to (100).
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Affiliation(s)
- T. Prashanth
- Department of Chemistry, Yuvaraja’s College, University of Mysore, Mysore 570 005, India
| | - V. Lakshmi Ranganatha
- Department of Chemistry, Yuvaraja’s College, University of Mysore, Mysore 570 005, India
| | - M. K. Usha
- Department of Studies in Physics, University of Mysore, Mysore 570 006, India
| | - Shaukath Ara Khanum
- Department of Chemistry, Yuvaraja’s College, University of Mysore, Mysore 570 005, India
| | - D. Revannasiddaiah
- Department of Studies in Physics, University of Mysore, Mysore 570 006, India
| | - Sumati Anthal
- Post-Graduate Department of Physics and Electronics, University of Jammu, Jammu Tawi 180 006, India
| | - Rajni Kant
- Post-Graduate Department of Physics and Electronics, University of Jammu, Jammu Tawi 180 006, India
| | - Vivek K. Gupta
- Post-Graduate Department of Physics and Electronics, University of Jammu, Jammu Tawi 180 006, India
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Hussein BH, Azab HA, El-Azab MF, El-Falouji AI. A novel anti-tumor agent, Ln(III) 2-thioacetate benzothiazole induces anti-angiogenic effect and cell death in cancer cell lines. Eur J Med Chem 2012; 51:99-109. [PMID: 22424613 DOI: 10.1016/j.ejmech.2012.02.025] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2011] [Revised: 02/11/2012] [Accepted: 02/13/2012] [Indexed: 10/28/2022]
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Sabbah DA, Simms NA, Brattain MG, Vennerstrom JL, Zhong H. Biological evaluation and docking studies of recently identified inhibitors of phosphoinositide-3-kinases. Bioorg Med Chem Lett 2012; 22:876-80. [PMID: 22212721 PMCID: PMC4472446 DOI: 10.1016/j.bmcl.2011.12.044] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2011] [Revised: 12/07/2011] [Accepted: 12/08/2011] [Indexed: 01/11/2023]
Abstract
The alpha isoform of the phosphatidylinositol-3-kinases (PI3Kα) is often mutated, amplified and overexpressed in human tumors. In an effort to develop new inhibitors targeting this enzyme, we carried out a pharmacophore model study based on six PI3Kα-selective compounds. The pharmacophore searching identified three structurally novel inhibitors of PI3Kα and its H1047R mutant. Our biological studies show that two of our hit molecules suppressed the formation of pAKT, a downstream effector of PI3Kα, and induced apoptosis in the HCT116 colon cancer cell line. QPLD-based docking showed that residues Asp933, Glu849, Val851, and Gln859 appeared to be key binding residues for active inhibitors.
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Affiliation(s)
- Dima A. Sabbah
- College of Pharmacy, University of Nebraska Medical Center, 986025 Nebraska Medical Center, Omaha, NE 68198-6025, USA
| | - Neka A. Simms
- Eppley Cancer Institute, University of Nebraska Medical Center, 985920 Nebraska Medical Center, Omaha, NE 68198-5950, USA
| | - Michael G. Brattain
- Eppley Cancer Institute, University of Nebraska Medical Center, 985920 Nebraska Medical Center, Omaha, NE 68198-5950, USA
| | - Jonathan L. Vennerstrom
- College of Pharmacy, University of Nebraska Medical Center, 986025 Nebraska Medical Center, Omaha, NE 68198-6025, USA
| | - Haizhen Zhong
- Department of Chemistry, University of Nebraska at Omaha, DSC 362, 6001 Dodge Street, Omaha, NE 68182, USA
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Tokalov SV, Iagunov AS. Radiation-induced cell cycle arrests in Ehrlich ascites carcinoma cells in vivo. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2011; 50:265-270. [PMID: 21259019 DOI: 10.1007/s00411-011-0354-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2010] [Accepted: 01/07/2011] [Indexed: 05/30/2023]
Abstract
Radiation-induced progression delay in G(1)/S, S and G(2)/M phases of p53 wild-type Ehrlich ascites carcinoma (EAC) cells growing in vivo was investigated by DNA flow cytometry. Different behavior patterns of EAC cells at the time after irradiation with low (2, 4, 6, 8 Gy) and high (10, 15, 20 Gy) doses were evaluated. While EAC cells showed a small progression delay in S phase and a dose-dependent block in G(2)/M phase after the irradiation with low doses, a clear additional block in G(1)/S phase was observed after irradiation with high doses. An assessment of the damage response and repair networks at the time after irradiation might have important implication for the development of cancer management and treatment.
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Affiliation(s)
- S V Tokalov
- Medical Faculty Carl Gustav Carus, OncoRay-Center for Radiation Research in Oncology, Dresden University of Technology, Fetscherstraße 74, P.O. Box 86, 01307, Dresden, Germany.
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Benzophenone-based derivatives: a novel series of potent and selective dual inhibitors of acetylcholinesterase and acetylcholinesterase-induced beta-amyloid aggregation. Eur J Med Chem 2011; 46:1682-93. [PMID: 21397996 DOI: 10.1016/j.ejmech.2011.02.019] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2010] [Revised: 01/14/2011] [Accepted: 02/12/2011] [Indexed: 11/22/2022]
Abstract
The leading mechanistic theory of Alzheimer's disease (AD) is the "amyloid hypothesis" which states that the accumulation of the amyloid β protein (Aβ), and its subsequent aggregation into plaques, is responsible for the initiation of a cascade of events resulting in neurodegeneration and dementia. The anti-amyloid disease-modifying approach, based on the decrease in the production of Aβ, gained thus a paramount importance. The aim of this study was the design and synthesis of a new series of acetylcholinesterase inhibitors (AChEIs) endowed with anti-Aβ aggregating capability. These dual binding inhibitors, being able to interact both with the peripheral anionic site (PAS) of AChE and the catalytic subsite, proved to be able to inhibit the AChE-induced Aβ aggregation. Thus, starting from the lead compound 1, an AChEI composed by a benzophenone scaffold and a N,N'-methylbenzylamino group, a substantial modification aimed at targeting the PAS was performed. To this aim, different amino-terminal side chains were incorporated into this main framework, in order to mimic the diethylmethylammonium alkyl moiety of the pure PAS ligand propidium. The synthesized compounds proved to effectively and selectively inhibit AChE. Moreover, compounds 16a-c and 18a,b, with a propoxy and a hexyloxy tether respectively, showed a good activity against the AChE-induced Aβ aggregation. In particular, molecular modeling studies confirmed that compounds carrying the diethylaminopropoxy and the diethylaminohexyloxy side chains (compounds 16a and 19a, respectively) could suitably contact the PAS pocket of the enzyme.
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Sathisha KR, Khanum SA, Chandra JNNS, Ayisha F, Balaji S, Marathe GK, Gopal S, Rangappa KS. Synthesis and xanthine oxidase inhibitory activity of 7-methyl-2-(phenoxymethyl)-5H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-5-one derivatives. Bioorg Med Chem 2010; 19:211-20. [PMID: 21163661 DOI: 10.1016/j.bmc.2010.11.034] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2010] [Revised: 11/12/2010] [Accepted: 11/12/2010] [Indexed: 10/18/2022]
Abstract
An elevated level of blood uric acid (hyperuricemia) is the underlying cause of gout. Xanthine oxidase is the key enzyme that catalyzes the oxidation of hypoxanthine to xanthine and then to uric acid. Allopurinol, a widely used xanthine oxidase inhibitor is the most commonly used drug to treat gout. However, a small but significant portion of the population suffers from adverse effects of allopurinol that includes gastrointestinal upset, skin rashes and hypersensitivity reactions. Moreover, an elevated level of uric acid is considered as an independent risk factor for cardiovascular diseases. Therefore use of allopurinol-like drugs with minimum side effects is the ideal drug of choice against gout. In this study, we report the synthesis of a series of pyrimidin-5-one analogues as effective and a new class of xanthine oxidase inhibitors. All the synthesized pyrimidin-5-one analogues are characterized by spectroscopic techniques and elemental analysis. Four (6a, 6b, 6d and 6f) out of 20 synthesized molecules in this class showed good inhibition against three different sources of xanthine oxidase, which were more potent than allopurinol based on their respective IC(50) values. Molecular modeling and docking studies revealed that the molecule 6a has very good interactions with the Molybdenum-Oxygen-Sulfur (MOS) complex a key component in xanthine oxidase. These results highlight the identification of a new class of xanthine oxidase inhibitors that have potential to be more efficacious, than allopurinol, to treat gout and possibly against cardiovascular diseases.
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Affiliation(s)
- K R Sathisha
- Department of Studies in Microbiology, University of Mysore, Manasagangotri, Mysore 570006, India
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Martins FT, dos Santos MH, Coelho CP, Barbosa LCA, Dias GC, Fracca MP, Neves PP, Stringheta PC, Doriguetto AC. A powder X-ray diffraction method for detection of polyprenylated benzophenones in plant extracts associated with HPLC for quantitative analysis. J Pharm Biomed Anal 2010; 54:451-7. [PMID: 20943341 DOI: 10.1016/j.jpba.2010.09.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2010] [Revised: 08/30/2010] [Accepted: 09/09/2010] [Indexed: 11/18/2022]
Abstract
A robust, direct, rapid and non-destructive X-ray diffraction crystallography method to detect the polyprenylated benzophenones 7-epi-clusianone (1) and guttiferone A (2) in extracts from Garcinia brasiliensis is presented. Powder samples of benzophenones 1 and 2, dried hexane extracts from G. brasiliensis seeds and fruit's pericarp, and the dried ethanolic extract from G. brasiliensis seeds were unambiguously characterized by powder X-ray diffractometry. The calculated X-ray diffraction peaks from crystal structures of analytes 1 and 2, previously determined by single-crystal X-ray diffraction technique, were overlaid to those of the experimental powder diffractograms, providing a practical identification of these compounds in the analyzed material and confirming the pure contents of the powder samples. Using the X-ray diffraction crystallography method, the studied polyprenylated benzophenones were selectively and simultaneously detected in the extracts which were mounted directly on sample holder. In addition, reference materials of the analytes were not required for analyses since the crystal structures of the compounds are known. High performance liquid chromatography analyses also were comparatively carried out to quantify the analytes in the same plant extracts showing to be in agreement with X-ray diffraction crystallography method.
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Affiliation(s)
- Felipe T Martins
- Institute of Physics of São Carlos, University of São Paulo, CP 369, São Carlos, SP 13560-970, Brazil.
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Dávalos JZ, Guerrero A, Herrero R, Jimenez P, Chana A, Abboud JLM, Lima CFRAC, Santos LMNBF, Lago AF. Neutral, ion gas-phase energetics and structural properties of hydroxybenzophenones. J Org Chem 2010; 75:2564-71. [PMID: 20297783 DOI: 10.1021/jo100085b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have carried out a study of the energetics, structural, and physical properties of o-, m-, and p-hydroxybenzophenone neutral molecules, C(13)H(10)O(2), and their corresponding anions. In particular, the standard enthalpies of formation in the gas phase at 298.15 K for all of these species were determined. A reliable experimental estimation of the enthalpy associated with intramolecular hydrogen bonding in chelated species was experimentally obtained. The gas-phase acidities (GA) of benzophenones, substituted phenols, and several aliphatic alcohols are compared with the corresponding aqueous acidities (pK(a)), covering a range of 278 kJ.mol(-1) in GA and 11.4 in pK(a). A computational study of the various species shed light on structural effects and further confirmed the self-consistency of the experimental results.
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Affiliation(s)
- Juan Z Dávalos
- Instituto de Quimica-Fisica Rocasolano, CSIC, Serrano 119, 28006, Madrid, Spain.
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Bromberg N, Dreyfuss JL, Regatieri CV, Palladino MV, Durán N, Nader HB, Haun M, Justo GZ. Growth inhibition and pro-apoptotic activity of violacein in Ehrlich ascites tumor. Chem Biol Interact 2010; 186:43-52. [PMID: 20416285 DOI: 10.1016/j.cbi.2010.04.016] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Revised: 04/08/2010] [Accepted: 04/14/2010] [Indexed: 12/01/2022]
Abstract
The continuing threat to biodiversity lends urgency to the need of identification of sustainable source of natural products. This is not so much trouble if there is a microbial source of the compound. Herein, violacein, a natural indolic pigment extracted from Chromobacterium violaceum, was evaluated for its antitumoral potential against the Ehrlich ascites tumor (EAT) in vivo and in vitro. Evaluation of violacein cytotoxicity using different endpoints indicated that EAT cells were twofold (IC(50)=5.0 microM) more sensitive to the compound than normal human peripheral blood lymphocytes. In vitro studies indicated that violacein cytotoxicity to EAT cells is mediated by a rapid (8-12h) production of reactive oxygen species (ROS) and a decrease in intracellular GSH levels, probably due to oxidative stress. Additionally, apoptosis was primarily induced, as demonstrated by an increase in Annexin-V positive cells, concurrently with increased levels of DNA fragmentation and increased caspase-2, caspase-9 and caspase-3 activities up to 4.5-, 6.0- and 5.5-fold, respectively, after 72 h of treatment. Moreover, doses of 0.1 and 1.0 microg kg(-1) violacein, administered intraperitoneally (i.p.) to EAT-bearing mice throughout the lifespan of the animals significantly inhibited tumor growth and increased survival of mice. In view of these results, a 35-day toxicity study was conducted in vivo. Complete hematology, biochemistry (ALT, AST and creatinine levels) and histopathological analysis of liver and kidney indicated that daily doses of violacein up to 1000 microg kg(-1) for 35 days are well tolerated and did not cause hematotoxicity nor renal or hepatotoxicity when administered i.p. to mice. Altogether, these results indicate that violacein causes oxidative stress and an imbalance in the antioxidant defense machinery of cells culminating in apoptotic cell death. Furthermore, this is the first report of its antitumor activity in vivo, which occurs in the absence of toxicity to major organs.
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Affiliation(s)
- Natália Bromberg
- Biological Chemistry Laboratory, Instituto de Química, Universidade Estadual de Campinas, Campinas, SP, Brazil
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Murata RM, Yatsuda R, dos Santos MH, Kohn LK, Martins FT, Nagem TJ, Alencar SM, de Carvalho JE, Rosalen PL. Antiproliferative effect of benzophenones and their influence on cathepsin activity. Phytother Res 2010; 24:379-83. [PMID: 19653314 DOI: 10.1002/ptr.2954] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The antiproliferative activity of two prenylated benzophenones isolated from Rheedia brasiliensis, the triprenylated garciniaphenone and the tetraprenylated benzophenone 7-epiclusianone, was investigated against human cancer cell lines. The antiproliferative activity on melanoma (UACC-62), breast (MCF-7), drug-resistant breast (NCI-ADR), lung/non-small cells (NCI460), ovarian (OVCAR 03), prostate (PC03), kidney (786-0), lung (NCI-460) and tongue (CRL-1624 and CRL-1623) cancer cells was determined using spectrophotometric quantification of the cellular protein content. The effect of these benzophenones on the activity of cathepsins B and G was also investigated. Garciniaphenone displayed cytostatic activity in all cell lines, whereas 7-epiclusianone showed a dose-dependent cytotoxic effect. The IC(50) values for cell proliferation revealed that 7-epiclusianone is more active than garciniaphenone against most of the cell lines. Furthermore, the antiproliferative effects demonstrated by garciniaphenone and 7-epiclusianone were related to their cathepsin inhibiting properties. In conclusion, 7-epiclusianone is a promising naturally occurring agent which displays multiple inhibitory effects which may be working in concert to inhibit cancer cell proliferation in vitro. The putative pathway by which 7-epiclusianone affects cancer cell development may involve cathepsin inhibition.
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Affiliation(s)
- Ramiro Mendonça Murata
- Department of Physiological Sciences, Faculty of Dentistry of Piracicaba, State University of Campinas (UNICAMP), SP, Brazil.
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Shankar J, Thippegowda PB, Kanum SA. Inhibition of HIF-1alpha activity by BP-1 ameliorates adjuvant induced arthritis in rats. Biochem Biophys Res Commun 2009; 387:223-8. [PMID: 19664474 DOI: 10.1016/j.bbrc.2009.01.086] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2009] [Accepted: 01/15/2009] [Indexed: 10/20/2022]
Abstract
Rheumatoid arthritis (RA) is a chronic inflammatory, angiogenic disease. Inflamed synovitis is a hallmark of RA which is hypoxic in nature. Vascular endothelial growth factor (VEGF), one of the key regulators of angiogenesis, is overexpressed in the pathogenesis of RA. VEGF expression is regulated by hypoxia-inducible factor-1alpha (HIF-1alpha), a master regulator of homeostasis which plays a pivotal role in hypoxia-induced angiogenesis. In this study we show that synthetic benzophenone analogue, 2-benzoyl-phenoxy acetamide (BP-1) can act as a novel anti-arthritic agent in an experimental adjuvant induced arthritis (AIA) rat model by targeting VEGF and HIF-1alpha. BP-1 administered hypoxic endothelial cells and arthritic animals clearly showed down regulation of VEGF expression. Further, BP-1 inhibits nuclear translocation of HIF-1alpha, which in turn suppresses transcription of the VEGF gene. These results suggest a further possible clinical application of the BP-1 derivative as an anti-arthritic agent in association with conventional chemotherapeutic agents.
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Affiliation(s)
- J Shankar
- Department of Microbiology & Immunology, University of Illinois at Chicago, Chicago, USA
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Bhutia SK, Mallick SK, Maiti S, Maiti TK. Inhibitory effect of Abrus abrin-derived peptide fraction against Dalton's lymphoma ascites model. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2009; 16:377-385. [PMID: 18706794 DOI: 10.1016/j.phymed.2008.07.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2008] [Revised: 06/02/2008] [Accepted: 07/03/2008] [Indexed: 05/26/2023]
Abstract
Peptides derived from larger molecules that are important modulators in cancer regression are becoming leads for development of therapeutic drugs. It has been reported that Abrus abrin, isolated from the seeds of Abrus precatorius, showed in vitro and in vivo antitumor properties by the induction of apoptosis. The present study was designed to evaluate the in vivo therapeutic effectiveness of abrin-derived peptide (ABP) fraction in Dalton's lymphoma (DL) mice model. The lethal dose (LD(50)) of ABP was found to be 2.25 mg/kg body weight and further the acute toxicity was determined with sublethal doses in normal mice. The acute toxicity like body weight, peripheral blood cell count, lympho-hematological and biochemical parameters remained unaffected till 200 microg/kg body weight of ABP. The sublethal doses of ABP showed very significant growth inhibitory properties in vivo DL mice model. There were 24%, 70.8% and 89.7% reductions in DL cell survival in 25, 50 and 100 microg/kg body weight of ABP, respectively. Analysis of the growth inhibitory mechanism in DL cells revealed nuclear fragmentation, and condensation with the appearance of the sub-G(0)/G(1) peak is indicative of apoptosis. Further, the Western blotting showed that apoptosis was mediated by the reduction in the ratio of Bcl-2 and Bax protein expression, and activation of caspase-3 through the release of cytochrome c in DL cells. Kaplan-Meier survival analysis showed an effective antitumor response (104.6 increase in life span (ILS) %) with a dose of 100 microg/kg body weight.
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Affiliation(s)
- Sujit K Bhutia
- Department of Biotechnology, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
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42
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Severi JA, Lima ZP, Kushima H, Monteiro Souza Brito AR, Campaner dos Santos L, Vilegas W, Hiruma-Lima CA. Polyphenols with antiulcerogenic action from aqueous decoction of mango leaves (Mangifera indica L.). Molecules 2009; 14:1098-110. [PMID: 19305363 PMCID: PMC6254050 DOI: 10.3390/molecules14031098] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2009] [Revised: 01/12/2009] [Accepted: 01/22/2009] [Indexed: 12/12/2022] Open
Abstract
This study was designed to determine the gastroprotective effect of a Mangifera indica leaf decoction (AD), on different experimental models in rodents. The administration of AD up to a dose of 5 g/kg (p.o.) did not produce any signs or symptoms of toxicity in the treated animals, while significantly decreasing the severity of gastric damage induced by several gastroprotective models. Oral pre-treatment with AD (250, 500 or 1000 mg/kg) in mice and rats with gastric lesions induced by HCl/ethanol, absolute ethanol, non-steroidal anti-inflammatory drug (NSAID) or stress-induced gastric lesions resulted in a significant decrease of said lesions. Phytochemical analyses of AD composition demonstrated the presence of bioactive phenolic compounds that represent 57.3% of total phenolic content in this extract. Two main phenolic compounds were isolated, specifically mangiferin (C-glucopyranoside of 1,3,6,7-tetrahydroxyxanthone) and C-glucosyl-benzophenone (3-C-β-D-glucopyranosyl-4’,2,4,6-tetrahydroxybenzophenone). These findings indicate the potential gastroprotective properties of aqueous decoction from M. indica leaves.
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Affiliation(s)
- Juliana Aparecida Severi
- Pharmacos and Drugs Department, Pharmaceutical Sciences Faculty, São Paulo State University-UNESP, c.p.355, Zip Code: 14801-902, UNESP, Araraquara, SP, Brazil; E-mail: (J-A.S.)
| | - Zeila Pinheiro Lima
- Physiology Department, Biosciences Institute, São Paulo State University-UNESP, c.p. 510, Zip Code: 18618-000, Botucatu, SP, Brazil; E-mail: (Z-P.L.), (H.K.)
| | - Hélio Kushima
- Physiology Department, Biosciences Institute, São Paulo State University-UNESP, c.p. 510, Zip Code: 18618-000, Botucatu, SP, Brazil; E-mail: (Z-P.L.), (H.K.)
| | - Alba Regina Monteiro Souza Brito
- Physiology and Biophysics Department, Biology Institute, Campinas State University-UNICAMP, c.p. 6109, Zip Code: 13083-970, Campinas, SP, Brazil; E-mail: (A-R.M.)
| | - Lourdes Campaner dos Santos
- Organic Chemistry Department, Chemistry Institute, São Paulo State University-UNESP, c.p. 355, Zip Code: 14800-900, UNESP, Araraquara, SP, Brazil; E-mail: (W.V.), (L-C.S.)
| | - Wagner Vilegas
- Organic Chemistry Department, Chemistry Institute, São Paulo State University-UNESP, c.p. 355, Zip Code: 14800-900, UNESP, Araraquara, SP, Brazil; E-mail: (W.V.), (L-C.S.)
| | - Clélia Akiko Hiruma-Lima
- Physiology Department, Biosciences Institute, São Paulo State University-UNESP, c.p. 510, Zip Code: 18618-000, Botucatu, SP, Brazil; E-mail: (Z-P.L.), (H.K.)
- Author to whom correspondence should be addressed; E-mail:
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Antitumor and proapoptotic effect of Abrus agglutinin derived peptide in Dalton's lymphoma tumor model. Chem Biol Interact 2008; 174:11-8. [DOI: 10.1016/j.cbi.2008.04.043] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2008] [Revised: 04/21/2008] [Accepted: 04/29/2008] [Indexed: 11/20/2022]
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Sancho MI, Jubert AH, Blanco SE, Ferretti FH, Castro EA. Determination of dissociation constants of p-hydroxybenzophenone in aqueous organic mixtures – Solvent effects. CAN J CHEM 2008. [DOI: 10.1139/v08-040] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The apparent acidity constant of p-hydroxybenzophenone, which is a practically insoluble drug in water but of great pharmaceutical interest, was determined by reversed-phase high-performance liquid chromatography in organic solvent – water mixtures (acetonitrile–water, ethanol–water, and methanol–water), varying the reaction medium permittivity in the interval 56 to 70, at constant ionic strength (0.050) and temperature (30 °C). A combined glass electrode calibrated with aqueous standard buffers was used to obtain pH readings based on the concentration scale (swpH). The pKa values from chromatographic data were obtained using the Hardcastle–Jano equation. Moreover, excellent linear relationships between the pKa values and solvation properties of the reaction medium (relative permittivity and Acity) were used to derive acid dissociation constants in aqueous solution. It has been concluded that the pKa values extrapolated from such solvent–water mixtures are consistent with each other and with previously reported measurements. In addition, the molecular structures of all the chemical species involved in the acid–base dissociation equilibrium studied were calculated with a B3LYP/6–311++G(d,p) method that makes use of the polarizable continuum model (PCM). Taking into account the theoretical pKa values, the conclusions obtained match our experimental determinations.Key words: solvent effects, p-hydroxybenzophenone, acidity constant, solvation parameters, structure, DFT calculation.
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Priya BS, Anil Kumar C, Nanjunda Swamy S, Naveen S, Shashidhara Prasad J, Rangappa KS. 2-(2-(2-Ethoxybenzoylamino)-4-chlorophenoxy)-N-(2-ethoxybenzoyl)benzamine inhibits EAT cell induced angiogenesis by down regulation of VEGF secretion. Bioorg Med Chem Lett 2007; 17:2775-80. [PMID: 17376684 DOI: 10.1016/j.bmcl.2007.02.074] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2007] [Revised: 02/22/2007] [Accepted: 02/26/2007] [Indexed: 11/17/2022]
Abstract
Compounds containing amide bond play a pivotal role in various pharmaceutical applications. 2-(2-(2-Ethoxybenzoylamino)-4-chlorophenoxy)-N-(2-ethoxybenzoyl)benzamine 4 is shown to be a potent antiangiogenic agent. In this study, we report the microwave-assisted synthesis, single crystal X-ray structure, and antiangiogenic effect of compound 4 in EAT cell induced angiogenesis. Treatment with compound 4 in vivo demonstrated down regulation of the secretion of VEGF in EAT cells and inhibition of blood vessel formation indicating the potential angioinhibitory effect of the compound in EAT cells.
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Affiliation(s)
- B S Priya
- Department of Studies in Chemistry, University of Mysore, Mysore 570 006, India
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Prabhakar BT, Khanum SA, Shashikanth S, Salimath BP. Antiangiogenic effect of 2-benzoyl–phenoxy acetamide in EAT cell is mediated by HIF-1α and down regulation of VEGF of in-vivo. Invest New Drugs 2006; 24:471-8. [PMID: 16598437 DOI: 10.1007/s10637-006-6587-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Benzophenones and its analogues are known for wide range of biological properties. Synthetic benzophenone analogue 2-benzoyl -phenoxy acetamide (BP-1) is proven to be potent antitumor and proapoptotic activity against EAT cells in-vivo. In the present report, we studied the antiangiogenic effect of BP-1 in EAT cells induced angiogenesis. Treatment with BP-1 in-vivo was demonstrated by the down regulation of the secretion of VEGF from EAT cells and inhibition of blood vessels formation indicating the potential angioinhibitory effect of BP-1 in EAT cells. HIF-1alpha protein, a transcription factor known to be key a regulator in hypoxia-induced angiogenesis was also down regulated by BP-1. Our findings indicated that, HIF-1alpha nuclear sequestration is repressed by BP-1 through inhibition of nuclear translocation. We postulate that diminished HIF-1alpha nuclear presence and activity in BP-1 treated EAT cells could be responsible for decreased VEGF expression and antiangiogenic effects.
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Affiliation(s)
- B T Prabhakar
- Department of Studies in Applied Botany & Biotechnology, University of Mysore, Manasagangotri, Mysore 570006, India.
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