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Almeida-Ferreira C, Marto CM, Carmo C, Almeida-Ferreira J, Frutuoso C, Carvalho MJ, Botelho MF, Laranjo M. Efficacy of Cold Atmospheric Plasma vs. Chemotherapy in Triple-Negative Breast Cancer: A Systematic Review. Int J Mol Sci 2024; 25:3254. [PMID: 38542225 PMCID: PMC10970295 DOI: 10.3390/ijms25063254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 03/05/2024] [Accepted: 03/06/2024] [Indexed: 04/09/2024] Open
Abstract
Breast cancer is a growing disease, with a high worldwide incidence and mortality rate among women. Among the various types, the treatment of triple-negative breast cancer (TNBC) remains a challenge. Considering the recent advances in cold atmospheric plasma (CAP) cancer research, our goal was to evaluate efficacy data from studies based on chemotherapy and CAP in TNBC cell lines and animal models. A search of the literature was carried out in the PubMed, Web of Science, Cochrane Library, and Embase databases. Of the 10,999 studies, there were fifty-four in vitro studies, three in vivo studies, and two in vitro and in vivo studies included. MDA-MB-231 cells were the most used. MTT, MTS, SRB, annexin-V/propidium iodide, trypan blue, and clonogenic assay were performed to assess efficacy in vitro, increasing the reliability and comprehensiveness of the data. There was found to be a decrease in cell proliferation after both chemotherapy and CAP; however, different protocol settings, including an extensive range of drug doses and CAP exposure times, were reported. For both therapies, a considerable reduction in tumor volume was observed in vivo compared with that of the untreated group. The treatment of TNBC cell lines with CAP proved successful, with apoptosis emerging as the predominant type of cellular death. This systematic review presents a comprehensive overview of the treatment landscape in chemotherapy and CAP regarding their efficacy in TNBC cell lines.
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Affiliation(s)
- Catarina Almeida-Ferreira
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal; (C.A.-F.); (C.M.M.); (C.C.); (C.F.); (M.J.C.); (M.F.B.)
- Institute of Biophysics, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal
- Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal
| | - Carlos Miguel Marto
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal; (C.A.-F.); (C.M.M.); (C.C.); (C.F.); (M.J.C.); (M.F.B.)
- Institute of Biophysics, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), University of Coimbra, 3000-354 Coimbra, Portugal
- Institute of Integrated Clinical Practice, Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Laboratory for Evidence-Based Sciences and Precision Dentistry, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal
- Institute of Experimental Pathology, Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
| | - Chrislaura Carmo
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal; (C.A.-F.); (C.M.M.); (C.C.); (C.F.); (M.J.C.); (M.F.B.)
- Institute of Biophysics, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
- Coimbra Chemistry Center (CQC), Department of Chemistry, Faculty of Sciences and Technology, University of Coimbra, 3004-535 Coimbra, Portugal
| | | | - Cristina Frutuoso
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal; (C.A.-F.); (C.M.M.); (C.C.); (C.F.); (M.J.C.); (M.F.B.)
- Institute of Biophysics, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
- Gynecology Service, Coimbra Hospital and University Centre, Coimbra Health Local Unit, 3004-561 Coimbra, Portugal
| | - Maria João Carvalho
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal; (C.A.-F.); (C.M.M.); (C.C.); (C.F.); (M.J.C.); (M.F.B.)
- Institute of Biophysics, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal
- Gynecology Service, Coimbra Hospital and University Centre, Coimbra Health Local Unit, 3004-561 Coimbra, Portugal
- Universitary Clinic of Gynecology, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
| | - Maria Filomena Botelho
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal; (C.A.-F.); (C.M.M.); (C.C.); (C.F.); (M.J.C.); (M.F.B.)
- Institute of Biophysics, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), University of Coimbra, 3000-354 Coimbra, Portugal
| | - Mafalda Laranjo
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal; (C.A.-F.); (C.M.M.); (C.C.); (C.F.); (M.J.C.); (M.F.B.)
- Institute of Biophysics, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), University of Coimbra, 3000-354 Coimbra, Portugal
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Brion A, Chaud J, Klimezak M, Bolze F, Ohlmann L, Léonard J, Chassaing S, Frisch B, Kichler A, Heurtault B, Specht A. Photoactivatable Liposomes for Blue to Deep Red Light-Activated Surface Drug Release: Application to Controlled Delivery of the Antitumoral Drug Melphalan. Bioconjug Chem 2023. [PMID: 37392184 DOI: 10.1021/acs.bioconjchem.3c00197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/03/2023]
Abstract
Liposome-based nanoparticles able to release, via a photolytic reaction, a payload anchored at the surface of the phospholipid bilayer were prepared. The liposome formulation strategy uses an original drug-conjugated blue light-sensitive photoactivatable coumarinyl linker. This is based on an efficient blue light-sensitive photolabile protecting group modified by a lipid anchor, which enables its incorporation into liposomes, leading to blue to green light-sensitive nanoparticles. In addition, the formulated liposomes were doped with triplet-triplet annihilation upconverting organic chromophores (red to blue light) in order to prepare red light sensitive liposomes able to release a payload, by upconversion-assisted photolysis. Those light-activatable liposomes were used to demonstrate that direct blue or green light photolysis or red light TTA-UC-assisted drug photolysis can effectively photorelease a drug payload (Melphalan) and kill tumor cells in vitro after photoactivation.
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Affiliation(s)
- Anaïs Brion
- 3Bio Team, Laboratoire de Conception et Application de Molécules Bioactives, Faculté de Pharmacie, UMR 7199 Université de Strasbourg/CNRS, F-67401 Illkirch Cedex, France
| | - Juliane Chaud
- 3Bio Team, Laboratoire de Conception et Application de Molécules Bioactives, Faculté de Pharmacie, UMR 7199 Université de Strasbourg/CNRS, F-67401 Illkirch Cedex, France
- Équipe de chimie et neurobiologie moléculaire, Laboratoire de Conception et Application de Molécules Bioactives, Faculté de Pharmacie, UMR 7199 Université de Strasbourg/CNRS, F-67401 Illkirch Cedex, France
| | - Maxime Klimezak
- Équipe de chimie et neurobiologie moléculaire, Laboratoire de Conception et Application de Molécules Bioactives, Faculté de Pharmacie, UMR 7199 Université de Strasbourg/CNRS, F-67401 Illkirch Cedex, France
| | - Frédéric Bolze
- Équipe de chimie et neurobiologie moléculaire, Laboratoire de Conception et Application de Molécules Bioactives, Faculté de Pharmacie, UMR 7199 Université de Strasbourg/CNRS, F-67401 Illkirch Cedex, France
| | - Laura Ohlmann
- 3Bio Team, Laboratoire de Conception et Application de Molécules Bioactives, Faculté de Pharmacie, UMR 7199 Université de Strasbourg/CNRS, F-67401 Illkirch Cedex, France
| | - Jérémie Léonard
- Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg/CNRS, UMR 7504, F-67034 Strasbourg, France
| | - Stefan Chassaing
- Institut de Chimie, Laboratoire de Synthèse, Réactivité Organiques & Catalyse, (LASYROC), Institut de Chimie, UMR 7177 Université de Strasbourg/CNRS, F-67000 Strasbourg, France
| | - Benoît Frisch
- 3Bio Team, Laboratoire de Conception et Application de Molécules Bioactives, Faculté de Pharmacie, UMR 7199 Université de Strasbourg/CNRS, F-67401 Illkirch Cedex, France
| | - Antoine Kichler
- 3Bio Team, Laboratoire de Conception et Application de Molécules Bioactives, Faculté de Pharmacie, UMR 7199 Université de Strasbourg/CNRS, F-67401 Illkirch Cedex, France
| | - Béatrice Heurtault
- 3Bio Team, Laboratoire de Conception et Application de Molécules Bioactives, Faculté de Pharmacie, UMR 7199 Université de Strasbourg/CNRS, F-67401 Illkirch Cedex, France
| | - Alexandre Specht
- Équipe de chimie et neurobiologie moléculaire, Laboratoire de Conception et Application de Molécules Bioactives, Faculté de Pharmacie, UMR 7199 Université de Strasbourg/CNRS, F-67401 Illkirch Cedex, France
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Photocaging of Pyridinylimidazole-Based Covalent JNK3 Inhibitors Affords Spatiotemporal Control of the Binding Affinity in Live Cells. Pharmaceuticals (Basel) 2023. [DOI: 10.3390/ph16020264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023] Open
Abstract
The concept of photocaging represents a promising approach to acquire spatiotemporal control over molecular bioactivity. To apply this strategy to pyridinylimidazole-based covalent JNK3 inhibitors, we used acrylamido-N-(4-((4-(4-(4-fluorophenyl)-1-methyl-2-(methylthio)-1H-imidazol-5-yl)pyridin-2-yl)amino)phenyl)benzamide (1) as a lead compound to design novel covalent inhibitors of JNK3 by modifying the amide bond moiety in the linker. The newly synthesized inhibitors demonstrated IC50 values in the low double-digit nanomolar range in a radiometric kinase assay. They were further characterized in a NanoBRETTM intracellular JNK3 assay, where covalent engagement of the target enzyme was confirmed by compound washout experiments and a loss in binding affinity for a newly generated JNK3(C154A)-NLuc mutant. The most potent compound of the series, N-(3-acrylamidophenyl)-4-((4-(4-(4-fluorophenyl)-1-methyl-2-(methylthio)-1H-imidazol-5-yl)pyridin-2-yl)amino)benzamide (13), was equipped with a photolabile protecting group leading to a nearly 10-fold decrease in intracellular JNK3 binding affinity, which was fully recovered by UV irradiation at a wavelength of 365 nm within 8 min. Our results highlight that photocaged covalent inhibitors can serve as a pharmacological tool to control JNK3 activity in live cells with light.
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Brion A, Chaud J, Léonard J, Bolze F, Chassaing S, Frisch B, Heurtault B, Kichler A, Specht A. Red Light-Responsive Upconverting Nanoparticles for Quantitative and Controlled Release of a Coumarin-Based Prodrug. Adv Healthc Mater 2023; 12:e2201474. [PMID: 36222265 DOI: 10.1002/adhm.202201474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 09/22/2022] [Indexed: 01/18/2023]
Abstract
Photolytic reactions allow the optical control of the liberation of biological effectors by photolabile protecting groups. The development of versatile technologies enabling the use of deep-red or NIR light excitation still represents a challenging issue, in particular for light-induced drug release (e.g., light-induced prodrug activation). Here, light-sensitive biocompatible lipid nanocapsules able to liberate an antitumoral drug through photolysis are presented. It is demonstrated that original photon upconverting nanoparticles (LNC-UCs) chemically conjugated to a coumarin-based photocleavable linker can quantitatively and efficiently release a drug by upconversion luminescence-assisted photolysis using a deep-red excitation wavelength. In addition, it is also able to demonstrate that such nanoparticles are stable in the dark, without any drug leakage in the absence of light. These findings open new avenues to specifically liberate diverse drugs using deep-red or NIR excitations for future therapeutic applications in nanomedicine.
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Affiliation(s)
- Anaïs Brion
- 3Bio Team, Laboratoire de Conception et Application de Molécules Bioactives, UMR 7199 Université de Strasbourg/CNRS, Faculté de Pharmacie, Illkirch, F-67401 Cedex, France
| | - Juliane Chaud
- 3Bio Team, Laboratoire de Conception et Application de Molécules Bioactives, UMR 7199 Université de Strasbourg/CNRS, Faculté de Pharmacie, Illkirch, F-67401 Cedex, France.,Équipe de chimie et neurobiologie moléculaire, Laboratoire de Conception et Application de Molécules Bioactives, UMR 7199 Université de Strasbourg/CNRS, Faculté de Pharmacie, Illkirch, F-67401 Cedex, France
| | - Jérémie Léonard
- Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg/CNRS, UMR 7504, Strasbourg, F-67034, France
| | - Frédéric Bolze
- Équipe de chimie et neurobiologie moléculaire, Laboratoire de Conception et Application de Molécules Bioactives, UMR 7199 Université de Strasbourg/CNRS, Faculté de Pharmacie, Illkirch, F-67401 Cedex, France
| | - Stefan Chassaing
- Institut de Chimie, Laboratoire de Synthèse, Réactivité Organiques & Catalyse, (LASYROC), Institut de Chimie, UMR 7177 Université de Strasbourg/CNRS, Strasbourg, F-67000, France
| | - Benoît Frisch
- 3Bio Team, Laboratoire de Conception et Application de Molécules Bioactives, UMR 7199 Université de Strasbourg/CNRS, Faculté de Pharmacie, Illkirch, F-67401 Cedex, France
| | - Béatrice Heurtault
- 3Bio Team, Laboratoire de Conception et Application de Molécules Bioactives, UMR 7199 Université de Strasbourg/CNRS, Faculté de Pharmacie, Illkirch, F-67401 Cedex, France
| | - Antoine Kichler
- 3Bio Team, Laboratoire de Conception et Application de Molécules Bioactives, UMR 7199 Université de Strasbourg/CNRS, Faculté de Pharmacie, Illkirch, F-67401 Cedex, France
| | - Alexandre Specht
- Équipe de chimie et neurobiologie moléculaire, Laboratoire de Conception et Application de Molécules Bioactives, UMR 7199 Université de Strasbourg/CNRS, Faculté de Pharmacie, Illkirch, F-67401 Cedex, France
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5
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Köckenberger J, Fischer O, Konopa A, Bergwinkl S, Mühlich S, Gmeiner P, Kutta RJ, Hübner H, Keller M, Heinrich MR. Synthesis, Characterization, and Application of Muscarinergic M 3 Receptor Ligands Linked to Fluorescent Dyes. J Med Chem 2022; 65:16494-16509. [PMID: 36484801 DOI: 10.1021/acs.jmedchem.2c01376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Through the linkage of two muscarinergic M3 receptor ligands to fluorescent tetramethylrhodamine- and cyanine-5-type dyes, two novel tool compounds, OFH5503 and OFH611, have been developed. Based on the suitable binding properties and kinetics related to the M3 subtype, both ligand-dye conjugates were found to be useful tools to determine binding affinities via flow cytometric measurements. In addition, confocal microscopy underlined the comparably low unspecific binding and the applicability for studying M3 receptor expression in cells. Along with the proven usefulness regarding studies on the M3 subtype, the conjugates OFH5503 and OFH611 could, due to their high affinity to the M1 receptor, evolve as even more versatile tools in the field of research on muscarinergic receptors.
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Affiliation(s)
- Johannes Köckenberger
- Department of Chemistry and Pharmacy, Pharmaceutical Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany
| | - Oliver Fischer
- Department of Chemistry and Pharmacy, Pharmaceutical Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany
| | - Andreas Konopa
- Department of Chemistry and Pharmacy, Molecular and Clinical Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany
| | - Sebastian Bergwinkl
- Institute of Physical and Theoretical Chemistry, University of Regensburg, D-93040 Regensburg, Germany
| | - Susanne Mühlich
- Department of Chemistry and Pharmacy, Molecular and Clinical Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany
| | - Peter Gmeiner
- Department of Chemistry and Pharmacy, Pharmaceutical Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany
| | - Roger Jan Kutta
- Institute of Physical and Theoretical Chemistry, University of Regensburg, D-93040 Regensburg, Germany
| | - Harald Hübner
- Department of Chemistry and Pharmacy, Pharmaceutical Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany
| | - Max Keller
- Institute of Pharmacy, University of Regensburg, D-93040 Regensburg, Germany
| | - Markus R Heinrich
- Department of Chemistry and Pharmacy, Pharmaceutical Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany
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6
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Antoni F, Bernhardt G. Derivatives of nitrogen mustard anticancer agents with improved cytotoxicity. Arch Pharm (Weinheim) 2020; 354:e2000366. [PMID: 33283341 DOI: 10.1002/ardp.202000366] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 11/11/2020] [Accepted: 11/13/2020] [Indexed: 01/18/2023]
Abstract
In previous studies, we demonstrated that esters of bendamustine containing a basic moiety are far more cytotoxic anticancer agents than their parent compound and that the substitution of the labile ester moiety by a branched ester or an amide markedly increases stability in the blood plasma. In the current study, we showed that this substitution was bioisosteric. Aiming at increased cytotoxicity, we introduced the same modification to related nitrogen mustards: 6-isobendamustine, chlorambucil, and melphalan. The synthesis was accomplished using the coupling reagents N,N'-dicyclohexylcarbodiimide or 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethylaminium tetrafluoroborate. Cytotoxicity against a panel of diverse cancer cells (carcinoma, sarcoma, and malignant melanoma) was assessed in a kinetic chemosensitivity assay. The target compounds showed cytotoxic or cytocidal effects at concentrations above 1 µM: a striking enhancement over bendamustine and 6-isobendamustine, both ineffective against the selected cancer cells at concentrations up to 50 µM, and a considerable improvement over chlorambucil, showing some potency only against the sarcoma cells. Melphalan was almost as effective as the target compounds-derivatization only provided a small improvement. The novel cytostatics are of interest as model compounds for analyzing a correlation between cytotoxicity and membrane transport and for the treatment of malignancies.
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Affiliation(s)
- Frauke Antoni
- Institute of Pharmacy, University of Regensburg, Regensburg, Germany
| | - Günther Bernhardt
- Institute of Pharmacy, University of Regensburg, Regensburg, Germany
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Gallati CM, Goetzfried SK, Ausserer M, Sagasser J, Plangger M, Wurst K, Hermann M, Baecker D, Kircher B, Gust R. Synthesis, characterization and biological activity of bromido[3-ethyl-4-aryl-5-(2-methoxypyridin-5-yl)-1-propyl-1,3-dihydro-2H-imidazol-2-ylidene]gold(i) complexes. Dalton Trans 2020; 49:5471-5481. [PMID: 32255443 DOI: 10.1039/c9dt04824c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Bromido[3-ethyl-4-aryl-5-(2-methoxypyridin-5-yl)-1-propyl-1,3-dihydro-2H-imidazol-2-ylidene]gold(i) complexes (8a-h) with methoxy, methyl and fluorine substituents at different positions of the 4-aryl ring were synthesized and characterized. The relevance of the 2-methoxypyridin-5-yl residue and the substituents at the 4-aryl ring with regard to the activity against a series of cell lines was determined. Particularly against the Cisplatin-resistant ovarian cancer cell line A2780cis, the most active bromido[3-ethyl-4-(4-methoxyphenyl)-5-(2-methoxypyridin-5-yl)-1-propyl-1,3-dihydro-2H-imidazol-2-ylidene]gold(i) complex 8c was more active than Auranofin. It also inhibited thioredoxin reductase more effectively and induced high amounts of reactive oxygen species in A2780cis cells. Furthermore, its influence on non-cancerous SV 80 lung fibroblasts was lower than that of Auranofin. This fact, together with a high accumulation rate in tumor cells, determined on the example of MCF-7 cells, makes this complex an interesting candidate for further extensive studies.
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Affiliation(s)
- Caroline M Gallati
- Department of Pharmaceutical Chemistry, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innrain 80/82, A-6020 Innsbruck, Austria.
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8
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Antoni F, Bause M, Scholler M, Bauer S, Stark SA, Jackson SM, Manolaridis I, Locher KP, König B, Buschauer A, Bernhardt G. Tariquidar-related triazoles as potent, selective and stable inhibitors of ABCG2 (BCRP). Eur J Med Chem 2020; 191:112133. [PMID: 32105979 DOI: 10.1016/j.ejmech.2020.112133] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 02/04/2020] [Accepted: 02/06/2020] [Indexed: 12/18/2022]
Abstract
Tariquidar derivatives have been described as potent and selective ABCG2 inhibitors. However, their susceptibility to hydrolysis limits their applicability. The current study comprises the synthesis and characterization of novel tariquidar-related inhibitors, obtained by bioisosteric replacement of the labile moieties in our previous tariquidar analog UR-ME22-1 (9). CuAAC ("click" reaction) gave convenient access to a triazole core as a substitute for the labile amide group and the labile ester moiety was replaced by different acyl groups in a Sugasawa reaction. A stability assay proved the enhancement of the stability in blood plasma. Compounds UR-MB108 (57) and UR-MB136 (59) inhibited ABCG2 in a Hoechst 33342 transport assay with an IC50 value of about 80 nM and belong to the most potent ABCG2 inhibitors described so far. Compound 57 was highly selective, whereas its PEGylated analog 59 showed some potency at ABCB1. Both 57 and 59 produced an ABCG2 ATPase-depressing effect which is in agreement with our precedent cryo-EM study identifying 59 as an ATPase inhibitor that exerts its effect via locking the inward-facing conformation. Thermostabilization of ABCG2 by 57 and 59 can be taken as a hint to comparable binding to ABCG2. As reference substances, compounds 57 and 59 allow additional mechanistic studies on ABCG2 inhibition. Due to their stability in blood plasma, they are also applicable in vivo. The highly specific inhibitor 57 is suited for PET labeling, helping to further elucidate the (patho)physiological role of ABCG2, e.g. at the BBB.
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Affiliation(s)
- Frauke Antoni
- Institute of Pharmacy, University of Regensburg, D-93040, Regensburg, Germany.
| | - Manuel Bause
- Institute of Organic Chemistry, University of Regensburg, D-93040, Regensburg, Germany
| | - Matthias Scholler
- Institute of Pharmacy, University of Regensburg, D-93040, Regensburg, Germany
| | - Stefanie Bauer
- Institute of Pharmacy, University of Regensburg, D-93040, Regensburg, Germany
| | - Simone A Stark
- Institute of Organic Chemistry, University of Regensburg, D-93040, Regensburg, Germany
| | - Scott M Jackson
- Institute of Molecular Biology and Biophysics, ETH Zürich, CH-8093, Zürich, Switzerland
| | - Ioannis Manolaridis
- Institute of Molecular Biology and Biophysics, ETH Zürich, CH-8093, Zürich, Switzerland
| | - Kaspar P Locher
- Institute of Molecular Biology and Biophysics, ETH Zürich, CH-8093, Zürich, Switzerland
| | - Burkhard König
- Institute of Organic Chemistry, University of Regensburg, D-93040, Regensburg, Germany.
| | - Armin Buschauer
- Institute of Pharmacy, University of Regensburg, D-93040, Regensburg, Germany
| | - Günther Bernhardt
- Institute of Pharmacy, University of Regensburg, D-93040, Regensburg, Germany
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9
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Peña-Solórzano D, Scholler M, Bernhardt G, Buschauer A, König B, Ochoa-Puentes C. Tariquidar-Related Chalcones and Ketones as ABCG2 Modulators. ACS Med Chem Lett 2018; 9:854-859. [PMID: 30128080 DOI: 10.1021/acsmedchemlett.8b00289] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Accepted: 07/25/2018] [Indexed: 01/08/2023] Open
Abstract
ABC transporters, including ABCG2, play a vital role in defending the human body against the vast range of xenobiotics. Even though this is beneficial for human health, these protein transporters have been implicated in the emerging resistance of cancer cells to a variety of structurally and functionally diverse anticancer drugs. In order to investigate their role in resistance, potent and selective ABCG2 modulators have been described in the literature. A leading class of modulators are the tariquidar analogues; however, their susceptibility to hydrolysis limits their applicable use. To overcome this, we synthesized a novel series of chalcone- and ketone-based compounds inspired by reported tariquidar analogues. Compounds were characterized and evaluated for their ABCG2 modulatory activity and ABC transporter selectivity. When compared to transporters ABCB1 and ABCC1, the chalcone-based compounds exhibited selectivity for ABCG2, while the ketone-based compounds showed only a slight preference for ABCG2. From the former series, chalcone 16d (UR-DP48) displayed similar activity to the reference fumitremorgin C, both producing comparable maximal effects. The compound exhibited marked antiproliferative activity, while cytotoxicity was less pronounced for the most active compound 17f from the ketone series. Chalcone-containing tariquidar analogues are promising modulators to aid in functional investigations of ABCG2 transporters.
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Affiliation(s)
- Diana Peña-Solórzano
- Laboratorio de Síntesis Orgánica Sostenible, Departamento de Química, Universidad Nacional de Colombia−Sede Bogotá, 5997 Bogotá, Colombia
| | | | | | | | | | - Cristian Ochoa-Puentes
- Laboratorio de Síntesis Orgánica Sostenible, Departamento de Química, Universidad Nacional de Colombia−Sede Bogotá, 5997 Bogotá, Colombia
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10
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Maia PIDS, Carneiro ZA, Lopes CD, Oliveira CG, Silva JS, de Albuquerque S, Hagenbach A, Gust R, Deflon VM, Abram U. Organometallic gold(iii) complexes with hybrid SNS-donating thiosemicarbazone ligands: cytotoxicity and anti-Trypanosoma cruzi activity. Dalton Trans 2018; 46:2559-2571. [PMID: 28154849 DOI: 10.1039/c6dt04307k] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stable organogold(iii) compounds of the composition [AuIII(Hdamp)(L1)]Cl are formed from reactions of [AuCl2(damp)] with H2L1 (damp- = dimethylaminomethylphenyl; H2L1 = N'-(diethylcarbamothioyl)benzimidothiosemicarbazides). The cationic complexes can be neutralized by reactions with weak bases under the formation of [AuIII(damp)(L1)] compounds. The structures of the products show interesting features like relatively short AuH contacts between the methylene protons of the Hdamp ligand and the gold(iii) ions. Preliminary biological studies on the uncoordinated compounds H2L1 and their gold complexes indicate considerable cytotoxicity for the [AuIII(Hdamp)(L1)]Cl complexes against MCF-7 cells. The in vitro trypanocidal activity was evaluated against the intracellular form of Trypanosoma cruzi. The organometallic complexes display a remarkable activity, which is dependent on the alkyl substituents of the thiosemicarbazone building blocks of the ligands. One representative of the cationic [AuIII(Hdamp)(L1)]Cl complexes, where H2L1 contains a dimethylthiosemicarbazide building block, shows a trypanocidal activity against the intracellular amastigote form in the same order of magnitude as that of the standard drug benznidazole. Furthermore, no appreciable toxicity to mice spleen cells is observed for this compound resulting in a therapeutic index of about 30, which strongly recommends it as a promising candidate for the development of a future antiparasitic drug.
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Affiliation(s)
- P I da S Maia
- Departamento de Química, Universidade Federal do Triângulo Mineiro, 38025-440, Uberaba, MG, Brazil.
| | - Z A Carneiro
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto - FCFRP-USP, Universidade de São Paulo, Avenida do Café s/n, 14040-903, Ribeirão Preto, SP, Brazil and Department of Biochemistry and Immunology, School of Medicine, University of São Paulo, Av. Bandeirantes 3900, 14040-900, Ribeirão Preto, SP, Brazil
| | - C D Lopes
- Department of Biochemistry and Immunology, School of Medicine, University of São Paulo, Av. Bandeirantes 3900, 14040-900, Ribeirão Preto, SP, Brazil
| | - C G Oliveira
- Instituto de Química de São Carlos, Universidade de São Paulo, Av. Trabalhador São Carlense, 400, 13566-590, São Carlos, SP, Brazil
| | - J S Silva
- Department of Biochemistry and Immunology, School of Medicine, University of São Paulo, Av. Bandeirantes 3900, 14040-900, Ribeirão Preto, SP, Brazil
| | - S de Albuquerque
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto - FCFRP-USP, Universidade de São Paulo, Avenida do Café s/n, 14040-903, Ribeirão Preto, SP, Brazil
| | - A Hagenbach
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstr. 34-36, D-14195 Berlin, Germany.
| | - R Gust
- Freie Universität Berlin, Institute of Pharmacy, Königin-Luise-Str. 2+4, 14195 Berlin, Germany
| | - V M Deflon
- Instituto de Química de São Carlos, Universidade de São Paulo, Av. Trabalhador São Carlense, 400, 13566-590, São Carlos, SP, Brazil
| | - U Abram
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstr. 34-36, D-14195 Berlin, Germany.
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11
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Luchsinger C, Aguilar M, Burgos PV, Ehrenfeld P, Mardones GA. Functional disruption of the Golgi apparatus protein ARF1 sensitizes MDA-MB-231 breast cancer cells to the antitumor drugs Actinomycin D and Vinblastine through ERK and AKT signaling. PLoS One 2018; 13:e0195401. [PMID: 29614107 PMCID: PMC5882166 DOI: 10.1371/journal.pone.0195401] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Accepted: 03/21/2018] [Indexed: 12/26/2022] Open
Abstract
Increasing evidence indicates that the Golgi apparatus plays active roles in cancer, but a comprehensive understanding of its functions in the oncogenic transformation has not yet emerged. At the same time, the Golgi is becoming well recognized as a hub that integrates its functions of protein and lipid biosynthesis to signal transduction for cell proliferation and migration in cancer cells. Nevertheless, the active function of the Golgi apparatus in cancer cells has not been fully evaluated as a target for combined treatment. Here, we analyzed the effect of perturbing the Golgi apparatus on the sensitivity of the MDA-MB-231 breast cancer cell line to the drugs Actinomycin D and Vinblastine. We disrupted the function of ARF1, a protein necessary for the homeostasis of the Golgi apparatus. We found that the expression of the ARF1-Q71L mutant increased the sensitivity of MDA-MB-231 cells to both Actinomycin D and Vinblastine, resulting in decreased cell proliferation and cell migration, as well as in increased apoptosis. Likewise, the combined treatment of cells with Actinomycin D or Vinblastine and Brefeldin A or Golgicide A, two disrupting agents of the ARF1 function, resulted in similar effects on cell proliferation, cell migration and apoptosis. Interestingly, each combined treatment had distinct effects on ERK1/2 and AKT signaling, as indicated by the decreased levels of either phospho-ERK1/2 or phospho-AKT. Our results suggest that disruption of Golgi function could be used as a strategy for the sensitization of cancer cells to chemotherapy.
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Affiliation(s)
- Charlotte Luchsinger
- Department of Physiology, School of Medicine, Universidad Austral de Chile, Valdivia, Chile
- Center for Interdisciplinary Studies of the Nervous System (CISNe), Universidad Austral de Chile, Valdivia, Chile
| | - Marcelo Aguilar
- Department of Physiology, School of Medicine, Universidad Austral de Chile, Valdivia, Chile
- Center for Interdisciplinary Studies of the Nervous System (CISNe), Universidad Austral de Chile, Valdivia, Chile
| | - Patricia V. Burgos
- Department of Physiology, School of Medicine, Universidad Austral de Chile, Valdivia, Chile
- Center for Interdisciplinary Studies of the Nervous System (CISNe), Universidad Austral de Chile, Valdivia, Chile
- Center for Cell Biology and Biomedicine (CEBICEM), School of Medicine and Science, Universidad San Sebastián, Santiago, Chile
- Center for Aging and Regeneration (CARE), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Pamela Ehrenfeld
- Center for Interdisciplinary Studies of the Nervous System (CISNe), Universidad Austral de Chile, Valdivia, Chile
- Department of Anatomy, Histology and Pathology, School of Medicine, Universidad Austral de Chile, Valdivia, Chile
| | - Gonzalo A. Mardones
- Department of Physiology, School of Medicine, Universidad Austral de Chile, Valdivia, Chile
- Center for Interdisciplinary Studies of the Nervous System (CISNe), Universidad Austral de Chile, Valdivia, Chile
- Center for Cell Biology and Biomedicine (CEBICEM), School of Medicine and Science, Universidad San Sebastián, Santiago, Chile
- * E-mail:
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12
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Iodinated chlorin p 6 copper complex induces anti-proliferative effect in oral cancer cells through elevation of intracellular reactive oxygen species. Chem Biol Interact 2017; 277:137-144. [DOI: 10.1016/j.cbi.2017.09.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 07/26/2017] [Accepted: 09/11/2017] [Indexed: 12/30/2022]
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13
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Sepúlveda-Crespo D, Jiménez JL, Gómez R, De La Mata FJ, Majano PL, Muñoz-Fernández MÁ, Gastaminza P. Polyanionic carbosilane dendrimers prevent hepatitis C virus infection in cell culture. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2016; 13:49-58. [PMID: 27562210 DOI: 10.1016/j.nano.2016.08.018] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 07/11/2016] [Accepted: 08/11/2016] [Indexed: 02/07/2023]
Abstract
Hepatitis C virus (HCV) infection is a major biomedical problem worldwide. Although new direct antiviral agents (DAAs) have been developed for the treatment of chronic HCV infection, the potential emergence of resistant virus variants and the difficulties to implement their administration worldwide make the development of novel antiviral agents an urgent need. Moreover, no effective vaccine is available against HCV and transmission of the virus still occurs particularly when prophylactic measures are not taken. We used a cell-based system to screen a battery of polyanionic carbosilane dendrimers (PCDs) to identify compounds with antiviral activity against HCV and show that they inhibit effective virus adsorption of major HCV genotypes. Interestingly, one of the PCDs irreversibly destabilized infectious virions. This compound displays additive effect in combination with a clinically relevant DAA, sofosbuvir. Our results support further characterization of these molecules as nanotools for the control of hepatitis C virus spread.
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Affiliation(s)
- Daniel Sepúlveda-Crespo
- Laboratorio InmunoBiología Molecular, Hospital General Universitario Gregorio Marañón, Madrid, Spain; Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Spanish HIV-HGM BioBank, Madrid, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain; Plataforma de Laboratorio, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - José Luis Jiménez
- Plataforma de Laboratorio, Hospital General Universitario Gregorio Marañón, Madrid, Spain; CIBER-BBN, Instituto de Salud Carlos III, Madrid, Spain
| | - Rafael Gómez
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain; Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, Alcalá de Henares, Madrid, Spain; CIBER-BBN, Instituto de Salud Carlos III, Madrid, Spain
| | - Francisco Javier De La Mata
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain; Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, Alcalá de Henares, Madrid, Spain; CIBER-BBN, Instituto de Salud Carlos III, Madrid, Spain
| | - Pedro L Majano
- Molecular Biology Unit, Hospital Universitario de la Princesa, Instituto de Investigación Sanitaria Princesa (IIS-IP), Madrid, Spain; CIBERehd, Instituto de Salud Carlos III, Madrid, Spain
| | - Ma Ángeles Muñoz-Fernández
- Laboratorio InmunoBiología Molecular, Hospital General Universitario Gregorio Marañón, Madrid, Spain; Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Spanish HIV-HGM BioBank, Madrid, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain; Plataforma de Laboratorio, Hospital General Universitario Gregorio Marañón, Madrid, Spain; CIBER-BBN, Instituto de Salud Carlos III, Madrid, Spain
| | - Pablo Gastaminza
- Centro Nacional De Biotecnología-Consejo Superior de Investigaciones Científicas (CNB-CSIC), Campus Cantoblanco, Madrid, Spain.
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14
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Obermoser V, Urban ME, Murgueitio MS, Wolber G, Kintscher U, Gust R. New telmisartan-derived PPARγ agonists: Impact of the 3D-binding mode on the pharmacological profile. Eur J Med Chem 2016; 124:138-152. [PMID: 27569195 DOI: 10.1016/j.ejmech.2016.08.027] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 08/12/2016] [Accepted: 08/13/2016] [Indexed: 11/25/2022]
Abstract
In previous studies, the 4'-((2-propyl-1H-benzo[d]imidazol-1-yl)methyl)-[1,1'-biphenyl]-2-carboxylic acid was identified as pharmacophoric core for PPARγ activation. In this structure-activity relationship study the C2-alkyl chain was elongated and the 2-COOH group was changed to a carbamide/carbonitrile or shifted to the 3- or 4-position. Furthermore, the benzo[d]imidazole was exchanged by 2,3-dihydrobenzo[d]thiazole or 1H-indole. C2-propyl derivatives showed the profile of partial agonists, while elongation of the C2-chain to that of an n-heptyl group or a 4-COOH shift changed the pharmacological profile to that of a potent full agonist. This finding can be explained by binding to the LBD in different ligand conformations. Two anchoring points (Tyr473 and Arg288) exist in the LBD, which have to be contacted to achieve receptor activation. In a crystal violet chemosensitivity assay using COS-7 cells and LNCaP cells expressing PPARγ only the carbamide derivatives influenced the cell growth, independently on the presence of the PPARγ. Therefore, receptor mediated cytotoxicity can be excluded.
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Affiliation(s)
- Victoria Obermoser
- Pharmaceutical Chemistry, Institute of Pharmacy, Universität Innsbruck, Innrain 80-82, 6020, Innsbruck, Austria
| | - Margarethe E Urban
- Pharmaceutical Chemistry, Institute of Pharmacy, Freie Universität Berlin, Königin-Luise Str. 2+4, 14195, Berlin, Germany
| | - Manuela S Murgueitio
- Computer-Aided Drug Design, Institute of Pharmacy, Freie Universität Berlin, Königin-Luise Str. 2+4, 14195, Berlin, Germany
| | - Gerhard Wolber
- Computer-Aided Drug Design, Institute of Pharmacy, Freie Universität Berlin, Königin-Luise Str. 2+4, 14195, Berlin, Germany
| | - Ulrich Kintscher
- Institute of Pharmacology, Center for Cardiovascular Research, Charité Universitätsmedizin Berlin, Hessische Str. 3-4, 10115, Berlin, Germany
| | - Ronald Gust
- Pharmaceutical Chemistry, Institute of Pharmacy, Universität Innsbruck, Innrain 80-82, 6020, Innsbruck, Austria.
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15
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Obreque-Balboa JE, Sun Q, Bernhardt G, König B, Buschauer A. Flavonoid derivatives as selective ABCC1 modulators: Synthesis and functional characterization. Eur J Med Chem 2015; 109:124-33. [PMID: 26774038 DOI: 10.1016/j.ejmech.2015.12.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 11/23/2015] [Accepted: 12/09/2015] [Indexed: 11/28/2022]
Abstract
A series of chromones, bearing substituted amino groups or N-substituted carboxamide moieties in position 2, was synthesized and characterized in cellular assays for modulation of the ABC transporters ABCC1 (MDCKII-MRP1 cells), ABCB1 (Kb-V1 cells) and ABCG2 (MCF-7/Topo cells). The most potent ABCC1 modulators identified among these flavonoid-type compounds were comparable to the reference compound reversan regarding potency, but superior in terms of selectivity concerning ABCB1 and ABCG2 (2-[4-(Benzo[c][1,2,5]oxadiazol-5-ylmethyl)piperazin-1-yl]-5,7-dimethoxy-4H-chromen-4-one (51): ABCC1, IC50 11.3 μM; inactive at ABCB1 and ABCG2). Compound 51 was as effective as reversan in reverting ABCC1-mediated resistance to cytostatics in MDCKII-MRP1 cells and proved to be stable in mouse plasma and cell culture medium. Modulators, such as compound 51, are of potential value as pharmacological tools for the investigation of the (patho)physiological role of ABCC1.
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Affiliation(s)
| | - Qiu Sun
- Institute of Organic Chemistry, University of Regensburg, D-93040 Regensburg, Germany
| | - Günther Bernhardt
- Institute of Pharmacy, University of Regensburg, D-93040 Regensburg, Germany
| | - Burkhard König
- Institute of Organic Chemistry, University of Regensburg, D-93040 Regensburg, Germany.
| | - Armin Buschauer
- Institute of Pharmacy, University of Regensburg, D-93040 Regensburg, Germany.
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16
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Huber S, Huettner JP, Hacker K, Bernhardt G, König J, Buschauer A. Esters of Bendamustine Are by Far More Potent Cytotoxic Agents than the Parent Compound against Human Sarcoma and Carcinoma Cells. PLoS One 2015. [PMID: 26196503 PMCID: PMC4721923 DOI: 10.1371/journal.pone.0133743] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The alkylating agent bendamustine is approved for the treatment of hematopoietic malignancies such as non-Hodgkin lymphoma, chronic lymphocytic leukemia and multiple myeloma. As preliminary data on recently disclosed bendamustine esters suggested increased cytotoxicity, we investigated representative derivatives in more detail. Especially basic esters, which are positively charged under physiological conditions, were in the crystal violet and the MTT assay up to approximately 100 times more effective than bendamustine, paralleled by a higher fraction of early apoptotic cancer cells and increased expression of p53. Analytical studies performed with bendamustine and representative esters revealed pronounced cellular accumulation of the derivatives compared to the parent compound. In particular, the pyrrolidinoethyl ester showed a high enrichment in tumor cells and inhibition of OCT1- and OCT3-mediated transport processes, suggesting organic cation transporters to be involved. However, this hypothesis was not supported by the differential expression of OCT1 (SLC22A1) and OCT3 (SLC22A3), comparing a panel of human cancer cells. Bendamustine esters proved to be considerably more potent cytotoxic agents than the parent compound against a broad panel of human cancer cell types, including hematologic and solid malignancies (e.g. malignant melanoma, colorectal carcinoma and lung cancer), which are resistant to bendamustine. Interestingly, spontaneously immortalized human keratinocytes, as a model of “normal” cells, were by far less sensitive than tumor cells against the most potent bendamustine esters.
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Affiliation(s)
- Stefan Huber
- Pharmaceutical and Medicinal Chemistry II, Institute of Pharmacy, University of Regensburg, Regensburg, Germany
| | - Johannes Philip Huettner
- Pharmacology and Toxicology, Institute of Pharmacy, University of Regensburg, Regensburg, Germany
| | - Kristina Hacker
- Institute of Experimental and Clinical Pharmacology and Toxicology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Günther Bernhardt
- Pharmaceutical and Medicinal Chemistry II, Institute of Pharmacy, University of Regensburg, Regensburg, Germany
| | - Jörg König
- Institute of Experimental and Clinical Pharmacology and Toxicology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Armin Buschauer
- Pharmaceutical and Medicinal Chemistry II, Institute of Pharmacy, University of Regensburg, Regensburg, Germany
- * E-mail:
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17
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Huber S, Wege AK, Bernhardt G, Buschauer A, Brockhoff G. Topotecan-induced ABCG2 expression in MCF-7 cells is associated with decreased CD24 and EpCAM expression and a loss of tumorigenicity. Cytometry A 2015; 87:707-16. [DOI: 10.1002/cyto.a.22675] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 03/11/2015] [Accepted: 03/31/2015] [Indexed: 12/12/2022]
Affiliation(s)
- Stefan Huber
- Department of Pharmaceutical and Medicinal Chemistry II; University of Regensburg; Regensburg Germany
| | - Anja K. Wege
- Department of Gynecology and Obstetrics; University of Regensburg; Regensburg Germany
| | - Günther Bernhardt
- Department of Pharmaceutical and Medicinal Chemistry II; University of Regensburg; Regensburg Germany
| | - Armin Buschauer
- Department of Pharmaceutical and Medicinal Chemistry II; University of Regensburg; Regensburg Germany
| | - Gero Brockhoff
- Department of Gynecology and Obstetrics; University of Regensburg; Regensburg Germany
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18
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Al-Salahi R, Alswaidan I, Ghabbour HA, Ezzeldin E, Elaasser M, Marzouk M. Docking and antiherpetic activity of 2-aminobenzo[de]-isoquinoline-1,3-diones. Molecules 2015; 20:5099-111. [PMID: 25808153 PMCID: PMC6272685 DOI: 10.3390/molecules20035099] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 03/09/2015] [Indexed: 11/16/2022] Open
Abstract
As part of our search for new compounds having antiviral effects, the prepared 2-aminonaphthalimide series was examined for its activity against the herpes simplex viruses HSV-1 and HSV-2. This represents the first study of the antiviral effects of this class of compounds. The new series of 2-amino-1H-benzo[de]isoquinoline-1,3-diones was examined against HSV-1 and HSV-2 using a cytopathic effect inhibition assay. In terms of effective concentration (EC50), furaldehyde, thiophene aldehyde and allyl isothiocyanide derivatives 14‒16 showed potent activity against HSV-1 (EC50 = 19.6, 16.2 and 17.8 μg/mL), compared to acyclovir as a reference drug (EC50 = 1.8 μg/mL). Moreover, 14 and 15 were found to exhibit valuable activity against HSV-2. Many of the tested compounds demonstrated weak to moderate EC50 values relative to their inactive parent compound (2-amino-1H-benzo[de]isoquinoline-1,3-dione), while compounds 7, 9, 13, 14, 15, 16, 21 and 22 were the most active set of antiviral compounds throughout this study. The cytotoxicity (CC50), EC50, and the selectivity index (SI) values were determined. In a molecular docking study, the ligand-receptor interactions of compounds 1-24 and their parent with the HSV-1 thymidine kinase active site were investigated using the Molegro Virtual Docker (MVD) software. Based on the potent anti-HSV properties of the previous naphthalimide condensate products, further exploration of this series of 2-amino-1H-benzo[de]isoquinoline-1,3-diones is warranted.
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Affiliation(s)
- Rashad Al-Salahi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; E-Mails: (R.A.-S.); (I.A.); (H.A.G.)
| | - Ibrahim Alswaidan
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; E-Mails: (R.A.-S.); (I.A.); (H.A.G.)
| | - Hazem A. Ghabbour
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; E-Mails: (R.A.-S.); (I.A.); (H.A.G.)
| | - Essam Ezzeldin
- Drug Bioavailability Lab., College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; E-Mail:
| | - Mahmoud Elaasser
- Regional Center for Mycology and Biotechnology, Al-Azhar University, Naser City, Cairo 11759, Egypt; E-Mail:
| | - Mohamed Marzouk
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; E-Mails: (R.A.-S.); (I.A.); (H.A.G.)
- Chemistry of Natural Products Group, Center of Excellence for Advanced Sciences, National Research Center, Dokki, Cairo 12622, Egypt
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19
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Würtenberger I, Follia V, Lerch F, Cwikla C, Fahrner N, Kalchschmidt C, Flögel B, Kircher B, Gust R. Fluorinated Fe(III) Salophene Complexes: Optimization of Tumor Cell Specific Activity and Utilization of Fluorine Labeling for in Vitro Analysis. J Med Chem 2014; 58:588-97. [DOI: 10.1021/jm500986h] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Irene Würtenberger
- Department
of Pharmaceutical Chemistry, Institute of Pharmacy, Center for Molecular
Biosciences Innsbruck, CCB—Centrum for Chemistry and Biomedicine, Universität Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Valeria Follia
- Department
of Pharmaceutical Chemistry, Institute of Pharmacy, Center for Molecular
Biosciences Innsbruck, CCB—Centrum for Chemistry and Biomedicine, Universität Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Fanni Lerch
- Department
of Pharmaceutical Chemistry, Institute of Pharmacy, Center for Molecular
Biosciences Innsbruck, CCB—Centrum for Chemistry and Biomedicine, Universität Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Christiane Cwikla
- Pharmazeutische
Chemie, Institut für Pharmazie, Freie Universität Berlin, Königin-Luise-Strasse 2+4, 14195 Berlin, Germany
| | - Nathalie Fahrner
- Department
of Pharmaceutical Chemistry, Institute of Pharmacy, Center for Molecular
Biosciences Innsbruck, CCB—Centrum for Chemistry and Biomedicine, Universität Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Christina Kalchschmidt
- Department
of Pharmaceutical Chemistry, Institute of Pharmacy, Center for Molecular
Biosciences Innsbruck, CCB—Centrum for Chemistry and Biomedicine, Universität Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Brigitte Flögel
- Immunobiology
and Stem Cell Laboratory, Department of Internal Medicine V (Hematology
and Oncology), Innsbruck Medical University, Anichstrasse 35, 6020 Innsbruck, Austria
- Tyrolean Cancer Research Institute, Innrain 66, 6020 Innsbruck, Austria
| | - Brigitte Kircher
- Immunobiology
and Stem Cell Laboratory, Department of Internal Medicine V (Hematology
and Oncology), Innsbruck Medical University, Anichstrasse 35, 6020 Innsbruck, Austria
- Tyrolean Cancer Research Institute, Innrain 66, 6020 Innsbruck, Austria
| | - Ronald Gust
- Department
of Pharmaceutical Chemistry, Institute of Pharmacy, Center for Molecular
Biosciences Innsbruck, CCB—Centrum for Chemistry and Biomedicine, Universität Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
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20
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Cytotoxicity evaluation of a new set of 2-aminobenzo[de]iso-quinoline-1,3-diones. Int J Mol Sci 2014; 15:22483-91. [PMID: 25486059 PMCID: PMC4284720 DOI: 10.3390/ijms151222483] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Revised: 10/13/2014] [Accepted: 12/02/2014] [Indexed: 11/17/2022] Open
Abstract
A new series of 2-amino-benzo[de]isoquinoline-1,3-diones was synthesized and fully characterized in our previous paper. Here, their cytotoxic effects have been evaluated in vitro in relation to colon HCT-116, hepatocellular Hep-G2 and breast MCF-7 cancer cell lines, using a crystal violet viability assay. The IC50-values of the target compounds are reported in µg/mL, using doxorubicin as a reference drug. The findings revealed that compounds 14, 15, 16, 21 and 22 had significant cytotoxic effects against HCT-116, MCF-7 and Hep-G2 cell lines. Their IC50 values ranged between 1.3 and 8.3 μg/mL in relation to doxorubicin (IC50 ≈ 0.45–0.89 μg/mL). Therefore, these compounds could be used as templates for furthering the development and design of more potent antitumor agents through structural modification.
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Subedi K, Yu HM, Newell M, Weselake RJ, Meesapyodsuk D, Qiu X, Shah S, Field CJ. Stearidonic acid-enriched flax oil reduces the growth of human breast cancer in vitro and in vivo. Breast Cancer Res Treat 2014; 149:17-29. [DOI: 10.1007/s10549-014-3212-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Accepted: 11/14/2014] [Indexed: 12/24/2022]
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Mingorance L, Friesland M, Coto-Llerena M, Pérez-del-Pulgar S, Boix L, López-Oliva JM, Bruix J, Forns X, Gastaminza P. Selective inhibition of hepatitis C virus infection by hydroxyzine and benztropine. Antimicrob Agents Chemother 2014; 58:3451-60. [PMID: 24709263 PMCID: PMC4068423 DOI: 10.1128/aac.02619-14] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 04/02/2014] [Indexed: 02/06/2023] Open
Abstract
Hepatitis C virus (HCV) infection is a major biomedical problem worldwide as it causes severe liver disease in millions of humans around the world. Despite the recent approval of specific drugs targeting HCV replication to be used in combination with alpha interferon (IFN-α) and ribavirin, there is still an urgent need for pangenotypic, interferon-free therapies to fight this genetically diverse group of viruses. In this study, we used an unbiased screening cell culture assay to interrogate a chemical library of compounds approved for clinical use in humans. This system enables identifying nontoxic antiviral compounds targeting every aspect of the viral life cycle, be the target viral or cellular. The aim of this study was to identify drugs approved for other therapeutic applications in humans that could be effective components of combination therapies against HCV. As a result of this analysis, we identified 12 compounds with antiviral activity in cell culture, some of which had previously been identified as HCV inhibitors with antiviral activity in cell culture and had been shown to be effective in patients. We selected two novel HCV antivirals, hydroxyzine and benztropine, to characterize them by determining their specificity and genotype spectrum as well as by defining the step of the replication cycle targeted by these compounds. We found that both compounds effectively inhibited viral entry at a postbinding step of genotypes 1, 2, 3, and 4 without affecting entry of other viruses.
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Affiliation(s)
- Lidia Mingorance
- Centro Nacional De Biotecnología-Consejo Superior de Investigaciones Científicas (CNB-CSIC), Madrid, Spain
| | - Martina Friesland
- Centro Nacional De Biotecnología-Consejo Superior de Investigaciones Científicas (CNB-CSIC), Madrid, Spain
| | | | | | - Loreto Boix
- Barcelona Clinic Liver Cancer (BCLC) Group, Liver Unit, Hospital Clínic, IDIBAPS, CIBERehd, Barcelona, Spain
| | - Juan Manuel López-Oliva
- Barcelona Clinic Liver Cancer (BCLC) Group, Liver Unit, Hospital Clínic, IDIBAPS, CIBERehd, Barcelona, Spain
| | - Jordi Bruix
- Barcelona Clinic Liver Cancer (BCLC) Group, Liver Unit, Hospital Clínic, IDIBAPS, CIBERehd, Barcelona, Spain
| | - Xavier Forns
- Liver Unit, Hospital Clinic, IDIBAPS, CIBERehd, Barcelona, Spain
| | - Pablo Gastaminza
- Centro Nacional De Biotecnología-Consejo Superior de Investigaciones Científicas (CNB-CSIC), Madrid, Spain
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Proetto MT, Liu W, Molchanov A, Sheldrick WS, Hagenbach A, Abram U, Gust R. Synthesis, Characterization, and in vitro Antiproliferative Activity of [Salophene]platinum(II) Complexes. ChemMedChem 2014; 9:1176-87. [DOI: 10.1002/cmdc.201402123] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Indexed: 11/11/2022]
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Kitanovic I, Can S, Alborzinia H, Kitanovic A, Pierroz V, Leonidova A, Pinto A, Spingler B, Ferrari S, Molteni R, Steffen A, Metzler-Nolte N, Wölfl S, Gasser G. A deadly organometallic luminescent probe: anticancer activity of a ReI bisquinoline complex. Chemistry 2014; 20:2496-507. [PMID: 24464824 DOI: 10.1002/chem.201304012] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Indexed: 12/25/2022]
Abstract
The photophysical properties of [Re(CO)3 (L-N3)]Br (L-N3 =2-azido-N,N-bis[(quinolin-2-yl)methyl]ethanamine), which could not be localized in cancer cells by fluorescence microscopy, have been revisited in order to evaluate its use as a luminescent probe in a biological environment. The Re(I) complex displays concentration-dependent residual fluorescence besides the expected phosphorescence, and the nature of the emitting excited states have been evaluated by DFT and time-dependent (TD) DFT methods. The results show that fluorescence occurs from a (1) LC/MLCT state, whereas phosphorescence mainly stems from a (3) LC state, in contrast to previous assignments. We found that our luminescent probe, [Re(CO)3 (L-N3)]Br, exhibits an interesting cytotoxic activity in the low micromolar range in various cancer cell lines. Several biochemical assays were performed to unveil the cytotoxic mechanism of the organometallic Re(I) bisquinoline complex. [Re(CO)3 (L-N3)]Br was found to be stable in human plasma indicating that [Re(CO)3 (L-N3)]Br itself and not a decomposition product is responsible for the observed cytotoxicity. Addition of [Re(CO)3 (L-N3)]Br to MCF-7 breast cancer cells grown on a biosensor chip micro-bioreactor immediately led to reduced cellular respiration and increased glycolysis, indicating a large shift in cellular metabolism and inhibition of mitochondrial activity. Further analysis of respiration of isolated mitochondria clearly showed that mitochondrial respiratory activity was a direct target of [Re(CO)3 (L-N3)]Br and involved two modes of action, namely increased respiration at lower concentrations, potentially through increased proton transport through the inner mitochondrial membrane, and efficient blocking of respiration at higher concentrations. Thus, we believe that the direct targeting of mitochondria in cells by [Re(CO)3 (L-N3)]Br is responsible for the anticancer activity.
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Affiliation(s)
- Igor Kitanovic
- Department of Bioanalytics and Molecular Biology, Institute for Pharmacy and Molecular Biology, University of Heidelberg im Neuenheimer Feld 364, 69120 Heidelberg (Germany), Tel: (+49) 622-1544-878 http://www.uni-heidelberg.de/fakultaeten/biowissenschaften/ipmb/biologie/woelfl/index.html
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Bauer S, Ochoa-Puentes C, Sun Q, Bause M, Bernhardt G, König B, Buschauer A. Quinoline Carboxamide-Type ABCG2 Modulators: Indole and Quinoline Moieties as Anilide Replacements. ChemMedChem 2013; 8:1773-8. [DOI: 10.1002/cmdc.201300319] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Indexed: 11/08/2022]
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26
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Maia PIDS, Nguyen HH, Hagenbach A, Bergemann S, Gust R, Deflon VM, Abram U. Rhenium mixed-ligand complexes with S,N,S-tridentate thiosemicarbazone/thiosemicarbazide ligands. Dalton Trans 2013; 42:5111-21. [DOI: 10.1039/c3dt32950j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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27
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Albada HB, Prochnow P, Bobersky S, Langklotz S, Schriek P, Bandow JE, Metzler-Nolte N. Tuning the activity of a short arg-trp antimicrobial Peptide by lipidation of a C- or N-terminal lysine side-chain. ACS Med Chem Lett 2012; 3:980-4. [PMID: 24900420 DOI: 10.1021/ml300148v] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2012] [Accepted: 09/04/2012] [Indexed: 01/18/2023] Open
Abstract
The attachment of lipids to C- or N-terminally positioned lysine side-chain amino groups increases the activity of a short synthetic (Arg-Trp)3 antimicrobial peptide significantly, making these peptides even active against pathogenic Gram-negative bacteria. Thus, a peptide with strong activity against S. aureus (1.1-2 μM) and good activity against A. baumannii and P. aeruginosa (9-18 μM) was identified. The most promising peptide causes 50% hemolysis at 285 μM and shows some selectivity against human cancer cell lines. Interestingly, the increased activity of ferrocenoylated peptides is mostly due to the lipophilicity of the organometallic fragment.
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Affiliation(s)
- H. Bauke Albada
- Inorganic
Chemistry I—Bioinorganic Chemistry, Department of Chemistry
and Biochemistry, and ‡Group Microbial Antibiotic Research, Faculty for
Biology and Biotechnology, Ruhr University Bochum, Universitätsstrasse 150, 44780 Bochum,
Germany
| | - Pascal Prochnow
- Inorganic
Chemistry I—Bioinorganic Chemistry, Department of Chemistry
and Biochemistry, and ‡Group Microbial Antibiotic Research, Faculty for
Biology and Biotechnology, Ruhr University Bochum, Universitätsstrasse 150, 44780 Bochum,
Germany
| | - Sandra Bobersky
- Inorganic
Chemistry I—Bioinorganic Chemistry, Department of Chemistry
and Biochemistry, and ‡Group Microbial Antibiotic Research, Faculty for
Biology and Biotechnology, Ruhr University Bochum, Universitätsstrasse 150, 44780 Bochum,
Germany
| | - Sina Langklotz
- Inorganic
Chemistry I—Bioinorganic Chemistry, Department of Chemistry
and Biochemistry, and ‡Group Microbial Antibiotic Research, Faculty for
Biology and Biotechnology, Ruhr University Bochum, Universitätsstrasse 150, 44780 Bochum,
Germany
| | - Patrick Schriek
- Inorganic
Chemistry I—Bioinorganic Chemistry, Department of Chemistry
and Biochemistry, and ‡Group Microbial Antibiotic Research, Faculty for
Biology and Biotechnology, Ruhr University Bochum, Universitätsstrasse 150, 44780 Bochum,
Germany
| | - Julia E. Bandow
- Inorganic
Chemistry I—Bioinorganic Chemistry, Department of Chemistry
and Biochemistry, and ‡Group Microbial Antibiotic Research, Faculty for
Biology and Biotechnology, Ruhr University Bochum, Universitätsstrasse 150, 44780 Bochum,
Germany
| | - Nils Metzler-Nolte
- Inorganic
Chemistry I—Bioinorganic Chemistry, Department of Chemistry
and Biochemistry, and ‡Group Microbial Antibiotic Research, Faculty for
Biology and Biotechnology, Ruhr University Bochum, Universitätsstrasse 150, 44780 Bochum,
Germany
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Memminger M, Keller M, Lopuch M, Pop N, Bernhardt G, von Angerer E, Buschauer A. The neuropeptide y y(1) receptor: a diagnostic marker? Expression in mcf-7 breast cancer cells is down-regulated by antiestrogens in vitro and in xenografts. PLoS One 2012; 7:e51032. [PMID: 23236424 PMCID: PMC3517602 DOI: 10.1371/journal.pone.0051032] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Accepted: 10/29/2012] [Indexed: 01/24/2023] Open
Abstract
The neuropeptide Y (NPY) Y(1) receptor (Y(1)R) has been suggested as a tumor marker for in vivo imaging and as a therapeutic target. In view of the assumed link between estrogen receptor (ER) and Y(1)R in mammary carcinoma and with respect to the development of new diagnostic tools, we investigated the Y(1)R protein expression in human MCF-7 cell variants differing in ER content and sensitivity against antiestrogens. ER and Y(1)R expression were quantified by radioligand binding using [(3)H]-17β-estradiol and the Y(1)R selective antagonist [(3)H]-UR-MK114, respectively. The latter was used for cellular binding studies and for autoradiography of MCF-7 xenografts. The fluorescent ligands Cy5-pNPY (universal Y(1)R, Y(2)R and Y(5)R agonist) and UR-MK22 (selective Y(1)R antagonist), as well as the selective antagonists BIBP3226 (Y(1)R), BIIE0246 (Y(2)R) and CGP71683 (Y(5)R) were used to identify the NPY receptor subtype(s) by confocal microscopy. Y(1)R functionality was determined by mobilization of intracellular Ca(2+). Sensitivity of MCF-7 cells against antiestrogen 4-hydroxytamoxifen correlated directly with the ER content. The exclusive expression of Y(1)Rs was confirmed by confocal microscopy. The Y(1)R protein was up-regulated (100%) by 17β-estradiol (EC(50) 20 pM) and the predominant role of ERα was demonstrated by using the ERα-selective agonist "propylpyrazole triol". 17β-Estradiol-induced over-expression of functional Y(1)R protein was reverted by the antiestrogen fulvestrant (IC(50) 5 nM) in vitro. Furthermore, tamoxifen treatment of nude mice resulted in an almost total loss of Y(1)Rs in MCF-7 xenografts. In conclusion, the value of the Y(1)R as a target for therapy and imaging in breast cancer patients may be compromised due to Y(1)R down-regulation induced by hormonal (antiestrogen) treatment.
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Affiliation(s)
- Martin Memminger
- Department of Pharmaceutical/Medicinal Chemistry II, Institute of Pharmacy, University of Regensburg, Regensburg, Germany
| | - Max Keller
- Department of Pharmaceutical/Medicinal Chemistry II, Institute of Pharmacy, University of Regensburg, Regensburg, Germany
| | - Miroslaw Lopuch
- Department of Pharmaceutical/Medicinal Chemistry II, Institute of Pharmacy, University of Regensburg, Regensburg, Germany
| | - Nathalie Pop
- Department of Pharmaceutical/Medicinal Chemistry II, Institute of Pharmacy, University of Regensburg, Regensburg, Germany
| | - Günther Bernhardt
- Department of Pharmaceutical/Medicinal Chemistry II, Institute of Pharmacy, University of Regensburg, Regensburg, Germany
| | - Erwin von Angerer
- Department of Pharmaceutical/Medicinal Chemistry II, Institute of Pharmacy, University of Regensburg, Regensburg, Germany
| | - Armin Buschauer
- Department of Pharmaceutical/Medicinal Chemistry II, Institute of Pharmacy, University of Regensburg, Regensburg, Germany
- * E-mail:
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Albada HB, Chiriac AI, Wenzel M, Penkova M, Bandow JE, Sahl HG, Metzler-Nolte N. Modulating the activity of short arginine-tryptophan containing antibacterial peptides with N-terminal metallocenoyl groups. Beilstein J Org Chem 2012; 8:1753-64. [PMID: 23209509 PMCID: PMC3511009 DOI: 10.3762/bjoc.8.200] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2012] [Accepted: 09/06/2012] [Indexed: 11/23/2022] Open
Abstract
A series of small synthetic arginine and tryptophan containing peptides was prepared and analyzed for their antibacterial activity. The effect of N-terminal substitution with metallocenoyl groups such as ferrocene (FcCO) and ruthenocene (RcCO) was investigated. Antibacterial activity in different media, growth inhibition, and killing kinetics of the most active peptides were determined. The toxicity of selected derivatives was determined against erythrocytes and three human cancer cell lines. It was shown that the replacement of an N-terminal arginine residue with a metallocenoyl moiety modulates the activity of WRWRW-peptides against Gram-positive and Gram-negative bacteria. MIC values of 2–6 µM for RcCO-W(RW)2 and 1–11 µM for (RW)3 were determined. Interestingly, W(RW)2-peptides derivatized with ferrocene were significantly less active than those derivatized with ruthenocene which have similar structural but different electronic properties, suggesting a major influence of the latter. The high activities observed for the RcCO-W(RW)2- and (RW)3-peptides led to an investigation of the origin of activity of these peptides using several important activity-related parameters. Firstly, killing kinetics of the RcCO-W(RW)2-peptide versus killing kinetics of the (RW)3 derivative showed faster reduction of the colony forming units for the RcCO-W(RW)2-peptide, although MIC values indicated higher activity for the (RW)3-peptide. This was confirmed by growth inhibition studies. Secondly, hemolysis studies revealed that both peptides did not lead to significant destruction of erythrocytes, even up to 500 µg/mL for (RW)3 and 250 µg/mL for RcCO-W(RW)2. In addition, toxicity against three human cancer cell lines (HepG2, HT29, MCF7) showed that the (RW)3-peptide had an IC50 value of ~140 µM and the RcW(RW)2 one of ~90 µM, indicating a potentially interesting therapeutic window. Both the killing kinetics and growth inhibition studies presented in this work point to a membrane-based mode of action for these two peptides, each having different kinetic parameters.
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Affiliation(s)
- H Bauke Albada
- Inorganic Chemistry I - Bioinorganic Chemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstraße 150, 44801 Bochum, Germany
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Proetto M, Liu W, Hagenbach A, Abram U, Gust R. Synthesis, characterization and in vitro antitumour activity of a series of novel platinum(II) complexes bearing Schiff base ligands. Eur J Med Chem 2012; 53:168-75. [DOI: 10.1016/j.ejmech.2012.03.053] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Revised: 03/20/2012] [Accepted: 03/27/2012] [Indexed: 11/26/2022]
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Albada HB, Wieberneit F, Dijkgraaf I, Harvey JH, Whistler JL, Stoll R, Metzler-Nolte N, Fish RH. The Chemoselective Reactions of Tyrosine-Containing G-Protein-Coupled Receptor Peptides with [Cp*Rh(H2O)3](OTf)2, Including 2D NMR Structures and the Biological Consequences. J Am Chem Soc 2012; 134:10321-4. [DOI: 10.1021/ja303010k] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- H. Bauke Albada
- Bioinorganic Chemistry 1, Faculty
of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Florian Wieberneit
- Biomolecular NMR, Faculty of
Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Ingrid Dijkgraaf
- Medical Centre, Department of
Nuclear Medicine, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - Jessica H. Harvey
- Ernest Gallo Clinic and Research Center,
Department of Neurology, University of California, San Francisco,
Emeryville, California 94608, United States
| | - Jennifer L. Whistler
- Ernest Gallo Clinic and Research Center,
Department of Neurology, University of California, San Francisco,
Emeryville, California 94608, United States
| | - Raphael Stoll
- Biomolecular NMR, Faculty of
Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Nils Metzler-Nolte
- Bioinorganic Chemistry 1, Faculty
of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Richard H. Fish
- Lawrence Berkeley National Laboratory,
University of California, Berkeley, California 94720, United States
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da S. Maia PI, Nguyen HH, Ponader D, Hagenbach A, Bergemann S, Gust R, Deflon VM, Abram U. Neutral Gold Complexes with Tridentate SNS Thiosemicarbazide Ligands. Inorg Chem 2012; 51:1604-13. [DOI: 10.1021/ic201905t] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Pedro I. da S. Maia
- Instituto
de Química
de São Carlos, Universidade de São Paulo, CP 780, São Carlos-São Paulo, Brazil
| | - Hung Huy Nguyen
- Department of Chemistry, Hanoi University of Science, 19 Le Thanh Tong, Hanoi,
Vietnam
| | - Daniela Ponader
- Institute of Chemistry
and Biochemistry, Freie Universität Berlin, Fabeckstr. 34-36,
D-14195 Berlin, Germany
| | - Adelheid Hagenbach
- Institute of Chemistry
and Biochemistry, Freie Universität Berlin, Fabeckstr. 34-36,
D-14195 Berlin, Germany
| | - Silke Bergemann
- Institute of Pharmacy, Freie Universität Berlin, Königin-Louise-Str.
2 and 4, D-14195 Berlin, Germany
| | - Ronald Gust
- Institute of Pharmacy, Freie Universität Berlin, Königin-Louise-Str.
2 and 4, D-14195 Berlin, Germany
| | - Victor M. Deflon
- Instituto
de Química
de São Carlos, Universidade de São Paulo, CP 780, São Carlos-São Paulo, Brazil
| | - Ulrich Abram
- Institute of Chemistry
and Biochemistry, Freie Universität Berlin, Fabeckstr. 34-36,
D-14195 Berlin, Germany
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Wang L, Ren W, ShangGuan Z, Liang X, WanYan X, Wang B. Validation of the mitotic kinesin Eg5 as a therapeutic target in leukemia using S-trityl-L-cysteine. J Drug Deliv Sci Technol 2012. [DOI: 10.1016/s1773-2247(12)50047-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Schliemann M, Bullinger E, Borchers S, Allgöwer F, Findeisen R, Scheurich P. Heterogeneity reduces sensitivity of cell death for TNF-stimuli. BMC SYSTEMS BIOLOGY 2011; 5:204. [PMID: 22204418 PMCID: PMC3313907 DOI: 10.1186/1752-0509-5-204] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2011] [Accepted: 12/28/2011] [Indexed: 11/25/2022]
Abstract
Background Apoptosis is a form of programmed cell death essential for the maintenance of homeostasis and the removal of potentially damaged cells in multicellular organisms. By binding its cognate membrane receptor, TNF receptor type 1 (TNF-R1), the proinflammatory cytokine Tumor Necrosis Factor (TNF) activates pro-apoptotic signaling via caspase activation, but at the same time also stimulates nuclear factor κB (NF-κB)-mediated survival pathways. Differential dose-response relationships of these two major TNF signaling pathways have been described experimentally and using mathematical modeling. However, the quantitative analysis of the complex interplay between pro- and anti-apoptotic signaling pathways is an open question as it is challenging for several reasons: the overall signaling network is complex, various time scales are present, and cells respond quantitatively and qualitatively in a heterogeneous manner. Results This study analyzes the complex interplay of the crosstalk of TNF-R1 induced pro- and anti-apoptotic signaling pathways based on an experimentally validated mathematical model. The mathematical model describes the temporal responses on both the single cell level as well as the level of a heterogeneous cell population, as observed in the respective quantitative experiments using TNF-R1 stimuli of different strengths and durations. Global sensitivity of the heterogeneous population was quantified by measuring the average gradient of time of death versus each population parameter. This global sensitivity analysis uncovers the concentrations of Caspase-8 and Caspase-3, and their respective inhibitors BAR and XIAP, as key elements for deciding the cell's fate. A simulated knockout of the NF-κB-mediated anti-apoptotic signaling reveals the importance of this pathway for delaying the time of death, reducing the death rate in the case of pulse stimulation and significantly increasing cell-to-cell variability. Conclusions Cell ensemble modeling of a heterogeneous cell population including a global sensitivity analysis presented here allowed us to illuminate the role of the different elements and parameters on apoptotic signaling. The receptors serve to transmit the external stimulus; procaspases and their inhibitors control the switching from life to death, while NF-κB enhances the heterogeneity of the cell population. The global sensitivity analysis of the cell population model further revealed an unexpected impact of heterogeneity, i.e. the reduction of parametric sensitivity.
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Affiliation(s)
- Monica Schliemann
- Institute for Automation Engineering, Laboratory for Systems Theory and Automatic Control, Otto-von-Guericke University Magdeburg, Germany
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Montero A, Gastaminza P, Law M, Cheng G, Chisari FV, Ghadiri MR. Self-assembling peptide nanotubes with antiviral activity against hepatitis C virus. CHEMISTRY & BIOLOGY 2011; 18:1453-62. [PMID: 22118679 PMCID: PMC3225806 DOI: 10.1016/j.chembiol.2011.08.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2011] [Revised: 08/10/2011] [Accepted: 08/19/2011] [Indexed: 01/12/2023]
Abstract
Hepatitis C virus (HCV) infects chronically 3% of the world population and the current therapy against this pathogen is only partially effective. With the aim of developing novel antiviral strategies against HCV, we screened a D,L-α-peptide library using an unbiased methodology based on a cell culture infection system for HCV. We found a family of highly active amphiphilic eight-residue cyclic D,L-α-peptides that specifically blocked entry of all tested HCV genotypes into target cells at a postbinding step without affecting infection by other enveloped RNA viruses. Structure-activity relationship studies indicate that antiviral activity was dependent on cyclic D,L-α-peptide self-assembly processes and that, although they possess a net neutral charge, they display a characteristic charge distribution. Our results indicate that supramolecular amphiphilic peptide structures constitute a class of highly selective HCV entry inhibitors.
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Affiliation(s)
- Ana Montero
- Department of Chemistry, Molecular Biology, The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Rd., La Jolla, CA 92037, USA
| | - Pablo Gastaminza
- Department of Immunology and Microbial Science, The Scripps Research Institute, 10550 North Torrey Pines Rd., La Jolla, CA 92037, USA
| | - Mansun Law
- Department of Immunology and Microbial Science, The Scripps Research Institute, 10550 North Torrey Pines Rd., La Jolla, CA 92037, USA
| | - Guofeng Cheng
- Department of Immunology and Microbial Science, The Scripps Research Institute, 10550 North Torrey Pines Rd., La Jolla, CA 92037, USA
| | - Francis V. Chisari
- Department of Immunology and Microbial Science, The Scripps Research Institute, 10550 North Torrey Pines Rd., La Jolla, CA 92037, USA
| | - M. Reza Ghadiri
- Department of Chemistry, Molecular Biology, The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Rd., La Jolla, CA 92037, USA
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Scutaru AM, Wenzel M, Gust R. Bivalent bendamustine and melphalan derivatives as anticancer agents. Eur J Med Chem 2011; 46:1604-15. [DOI: 10.1016/j.ejmech.2011.02.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Revised: 02/01/2011] [Accepted: 02/04/2011] [Indexed: 11/15/2022]
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Antiviral stilbene 1,2-diamines prevent initiation of hepatitis C virus RNA replication at the outset of infection. J Virol 2011; 85:5513-23. [PMID: 21430055 DOI: 10.1128/jvi.02116-10] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The recent development of a cell culture model of hepatitis C virus (HCV) infection based on the JFH-1 molecular clone has enabled discovery of new antiviral agents. Using a cell-based colorimetric screening assay to interrogate a 1,200-compound chemical library for anti-HCV activity, we identified a family of 1,2-diamines derived from trans-stilbene oxide that prevent HCV infection at nontoxic, low micromolar concentrations in cell culture. Structure-activity relationship analysis of ~ 300 derivatives synthesized using click chemistry yielded compounds with greatly enhanced low nanomolar potency and a > 1,000:1 therapeutic ratio. Using surrogate models of HCV infection, we showed that the compounds selectively block the initiation of replication of incoming HCV RNA but have no impact on viral entry, primary translation, or ongoing HCV RNA replication, nor do they suppress persistent HCV infection. Selection of an escape variant revealed that NS5A is directly or indirectly targeted by this compound. In summary, we have identified a family of HCV inhibitors that target a critical step in the establishment of HCV infection in which NS5A translated de novo from an incoming genomic HCV RNA template is required to initiate the replication of this important human pathogen.
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Posavec D, Dorsch A, Bogner U, Bernhardt G, Nagl S. Polyvinyl butyral nanobeads: preparation, characterization, biocompatibility and cancer cell uptake. Mikrochim Acta 2011. [DOI: 10.1007/s00604-011-0573-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Scutaru AM, Wenzel M, Scheffler H, Wolber G, Gust R. Optimization of the N-Lost Drugs Melphalan and Bendamustine: Synthesis and Cytotoxicity of a New Set of Dendrimer−Drug Conjugates as Tumor Therapeutic Agents. Bioconjug Chem 2010; 21:1728-43. [DOI: 10.1021/bc900453f] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ana Maria Scutaru
- Institute für Pharmazie, Freie Universität Berlin, Königin Luise Str. 2 + 4, 14195 Berlin, Germany, and Institut für Pharmazie, Universität Innsbruck, Innrain 52, A-6020 Innsbruck, Austria
| | - Maxi Wenzel
- Institute für Pharmazie, Freie Universität Berlin, Königin Luise Str. 2 + 4, 14195 Berlin, Germany, and Institut für Pharmazie, Universität Innsbruck, Innrain 52, A-6020 Innsbruck, Austria
| | - Heike Scheffler
- Institute für Pharmazie, Freie Universität Berlin, Königin Luise Str. 2 + 4, 14195 Berlin, Germany, and Institut für Pharmazie, Universität Innsbruck, Innrain 52, A-6020 Innsbruck, Austria
| | - Gerhard Wolber
- Institute für Pharmazie, Freie Universität Berlin, Königin Luise Str. 2 + 4, 14195 Berlin, Germany, and Institut für Pharmazie, Universität Innsbruck, Innrain 52, A-6020 Innsbruck, Austria
| | - Ronald Gust
- Institute für Pharmazie, Freie Universität Berlin, Königin Luise Str. 2 + 4, 14195 Berlin, Germany, and Institut für Pharmazie, Universität Innsbruck, Innrain 52, A-6020 Innsbruck, Austria
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Hille A, Gust R. Influence of methoxy groups on the antiproliferative effects of [Fe(III)(salophene-OMe)Cl] complexes. Eur J Med Chem 2010; 45:5486-92. [PMID: 20828884 DOI: 10.1016/j.ejmech.2010.08.037] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2010] [Revised: 06/30/2010] [Accepted: 08/13/2010] [Indexed: 11/17/2022]
Abstract
We synthesized methoxy-substituted iron(III)-salophene complexes ([Fe(III)(OMe-salophene)Cl] with salophene = N,N'-bis(salicylidene)-1,2-phenylenediamine) and analyzed their biological activity in MCF-7 and MDA-MB-231 breast cancer as well as in HT-29 colon carcinoma cells. The results obtained in a time-dependent chemosensitivity test clearly demonstrated the correlation between the cytotoxicity of the complexes and the position of methoxy substituents in the salicylidene moieties: 3-OCH(3) (4) < 5-OCH(3) (8) < H (2) < 4-OCH(3) (6) = 6-OCH(3) (10). Compounds 6 and 10 caused cytocidal effects already at a concentration of 0.5 μM. Both lead compound 2 and complex 8 showed similar time response curves, however, with a 5-fold lower activity compared to 6 and 10, respectively. Referring to [Fe(III)(salophene)Cl] (2), methoxy substitution was accompanied with the loss of tumor cell selectivity. Moreover, the free ligands (1, 3, 5, 7, and 9) were inactive.
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Affiliation(s)
- Annegret Hille
- Institute of Pharmacy, Freie Universität Berlin, Königin-Luise-Strasse 2 + 4, D-14195 Berlin, Germany
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2-Phenyl-1-[4-(2-piperidine-1-yl-ethoxy)benzyl]-1H-benzimidazoles as ligands for the estrogen receptor: Synthesis and pharmacological evaluation. Bioorg Med Chem 2010; 18:4905-16. [DOI: 10.1016/j.bmc.2010.06.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2010] [Revised: 06/01/2010] [Accepted: 06/04/2010] [Indexed: 11/23/2022]
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Utku S, Gumus F, Tezcan S, Serin MS, Ozkul A. Synthesis, characterization, cytotoxicity, and DNA binding of some new platinum(II) and platinum(IV) complexes with benzimidazole ligands. J Enzyme Inhib Med Chem 2010; 25:502-8. [DOI: 10.3109/14756360903282858] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Semra Utku
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Mersin, Mersin, Turkey
- Department of Medical Microbiology, Faculty of Medicine, University of Mersin, Mersin, Turkey
| | - Fatma Gumus
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Gazi, Ankara, Turkey
- Department of Medical Microbiology, Faculty of Medicine, University of Mersin, Mersin, Turkey
| | - Seda Tezcan
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Mersin, Mersin, Turkey
- Department of Medical Microbiology, Faculty of Medicine, University of Mersin, Mersin, Turkey
| | - Mehmet Sami Serin
- Department of Medical Microbiology, Faculty of Medicine, University of Mersin, Mersin, Turkey
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, University of Mersin, Mersin, Turkey
| | - Aykut Ozkul
- Department of Medical Microbiology, Faculty of Medicine, University of Mersin, Mersin, Turkey
- Department of Virology, Faculty of Veterinary Medicine, University of Ankara, Ankara, Turkey
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Unbiased probing of the entire hepatitis C virus life cycle identifies clinical compounds that target multiple aspects of the infection. Proc Natl Acad Sci U S A 2009; 107:291-6. [PMID: 19995961 DOI: 10.1073/pnas.0912966107] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Over 170 million people are chronically infected by the hepatitis C virus (HCV) and at risk for dying from liver cirrhosis and hepatocellular carcinoma. Current therapy is expensive, associated with significant side effects, and often ineffective. Discovery of antiviral compounds against HCV traditionally involves a priori target identification followed by biochemical screening and confirmation in cell-based replicon assays. Typically, this results in the discovery of compounds that address a few predetermined targets and are prone to select for escape variants. To attempt to identify antiviral compounds with broad target specificity, we developed an unbiased cell-based screening system involving multiple rounds of infection in a 96-well format. Analysis of a publicly available library of 446 clinically approved drugs identified 33 compounds that targeted both known and previously unexplored aspects of HCV infection, including entry, replication, and assembly. Discovery of novel viral and cellular targets in this manner will broaden the therapeutic armamentarium against this virus, allowing for the development of drug mixtures that should reduce the likelihood of mutational escape.
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Gust R, Beck W, Jaouen G, Schönenberger H. Optimization of cisplatin for the treatment of hormone dependent tumoral diseases. Coord Chem Rev 2009. [DOI: 10.1016/j.ccr.2009.02.025] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Hille A, Gust R. Relationship Between Anticancer Activity and Stereochemistry of Saldach Ligands and their Iron(III) Complexes. Arch Pharm (Weinheim) 2009; 342:625-31. [DOI: 10.1002/ardp.200900048] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Nguyen HH, Jegathesh JJ, Maia PIDS, Deflon VM, Gust R, Bergemann S, Abram U. Synthesis, Structural Characterization, and Biological Evaluation of Oxorhenium(V) Complexes with a Novel Type of Thiosemicarbazones Derived from N-[N′,N′-Dialkylamino(thiocarbonyl)]benzimidoyl Chlorides. Inorg Chem 2009; 48:9356-64. [PMID: 19736964 DOI: 10.1021/ic901160v] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hung Huy Nguyen
- Department of Chemistry, Hanoi University of Sciences, 19 Le Thanh Tong, Hanoi, Vietnam
| | - Jesudas J. Jegathesh
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstrasse 34-36, D-14195 Berlin, Germany
| | - Pedro I. da S. Maia
- Instituto de Química de São Carlos, Universidade de São Paulo, CP 780 São Carlos − São Paulo, Brazil
| | - Victor M. Deflon
- Instituto de Química de São Carlos, Universidade de São Paulo, CP 780 São Carlos − São Paulo, Brazil
| | - Ronald Gust
- Institute of Pharmacy, Königin-Luise-Strasse 2 and 4, 14195 Berlin, Germany
| | - Silke Bergemann
- Institute of Pharmacy, Königin-Luise-Strasse 2 and 4, 14195 Berlin, Germany
| | - Ulrich Abram
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstrasse 34-36, D-14195 Berlin, Germany
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Ranza E, Mazzini G, Facoetti A, Nano R. In-vitro effects of the tyrosine kinase inhibitor imatinib on glioblastoma cell proliferation. J Neurooncol 2009; 96:349-57. [PMID: 19629393 DOI: 10.1007/s11060-009-9975-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2009] [Accepted: 07/06/2009] [Indexed: 12/31/2022]
Abstract
Glioblastoma (GBL) is the most malignant brain tumour in adults, causing the death of most patients within 9-12 months of diagnosis. Treatment is based on a combination of surgery, radiation therapy, and chemotherapy. With these treatment modalities, however, responses are extremely poor, so identification of novel treatment strategies is highly warranted. Platelet-derived growth factors (PDGF) and their receptors are commonly coexpressed in GBL, suggesting that stimulation of autocrine PDGF receptors may contribute to their growth. Interest in these receptors as drug target for glioblastoma treatment has increased with the clinical availability of the PDGFR kinase inhibitor antagonist imatinib mesylate (STI571). In this study, T98G and A172 human GBL cell lines were analysed for their sensitivity to treatment with imatinib. In particular, we focussed our attention on analysis of DNA distribution by flow cytometry at different times of incubation with different imatinib concentrations (1-30 microM: ). Our results show that imatinib induces growth arrest in T98G and A172 cells in the G(0)/G(1) phase of the cell cycle, at all the concentrations tested, as early as 24 h after treatment. However we have also seen, by means of annexin V staining, that at 20 and 30 microM: concentrations, in concomitance with a significant growth arrest in the G(0)/G(1) phase, there is an increase of apoptotic cells 48 h after treatment, suggesting that imatinib at low concentrations (1-10 microM: ) could act as a cytostatic agent whereas at high concentrations (20, 30 microM: ) it mainly behaves as a cytotoxic agent.
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Affiliation(s)
- E Ranza
- Department of Nuclear and Theoretical Physics, University of Pavia, Pavia, Italy.
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Thompson MD, Stushnoff C, McGinley JN, Thompson HJ. In Vitro Measures Used to Predict Anticancer Activity of Apple Cultivars and Their Comparison to Outcomes From a Rat Model of Experimentally Induced Breast Cancer. Nutr Cancer 2009; 61:510-7. [DOI: 10.1080/01635580902825563] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Lemke J, Pinto A, Niehoff P, Vasylyeva V, Metzler-Nolte N. Synthesis, structural characterisation and anti-proliferative activity of NHC gold amino acid and peptide conjugates. Dalton Trans 2009:7063-70. [PMID: 20449149 DOI: 10.1039/b906140a] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We report the synthesis of new NHC gold(I) and NHC gold(III) halide, amino acid and dipeptide complexes. Transmetallation of the N-phenylalanine-substituted NHC silver complex 3 with Me2SAuCl yields the phenylalanine-NHC gold(I) conjugate 4a. Halide exchange with LiBr and oxidation of 4a with Br2 in CH2Cl2 yields the phenylalanine-NHC Au(I) and Au(III) bromides 4b and 4c, respectively. Reaction of N-Boc protected cysteine methyl ester (Boc-Cys-OMe) or the dipeptide N-Boc-Leu-Cys-OMe with the NHC gold chloride 6a yields the (NHC)Au-S complexed amino acid and dipeptide derivatives 8 and 9. The NHC gold(III) complexes 4c and 6c were characterised by single crystal X-ray analysis. All of the tested gold carbene complexes showed significant anti-tumor activity on the HeLa, HepG2 and HT-29 cancer cell lines. The best compounds show activity comparable to the well-known anti-cancer drug cisplatin. There seems to be no clear cut structure-activity relationship in the compounds tested, nor did we observe a dependence on the metal oxidation state or the different halide substituents. Given the ease of preparation, stability and high activity of the compounds described herein, it may be possible to design tumor-specific anti-cancer agents based on NHC gold amino acid conjugates in the future.
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Affiliation(s)
- Jessica Lemke
- Lehrstuhl für Anorganische Chemie I - Bioanorganische Chemie, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Universitätsstrasse 150, D-44801 Bochum, Germany
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Kühnle M, Egger M, Müller C, Mahringer A, Bernhardt G, Fricker G, König B, Buschauer A. Potent and selective inhibitors of breast cancer resistance protein (ABCG2) derived from the p-glycoprotein (ABCB1) modulator tariquidar. J Med Chem 2009; 52:1190-7. [PMID: 19170519 DOI: 10.1021/jm8013822] [Citation(s) in RCA: 116] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The efflux pumps ABCB1 (p-gp, MDR1) and ABCG2 (BCRP) are expressed to a high extent by endothelial cells at the blood-brain barrier (BBB) and other barrier tissues and are involved in drug resistance of tumor (stem) cells. Whereas numerous ABCB1 inhibitors are known, only a few ABCG2 modulators with submicromolar activity have been published. Starting from tariquidar (4) analogues as ABCB1 modulators, minimal structural modifications resulted in a drastic shift in favor of ABCG2 inhibition. Highest potency was found when the 3,4-dimethoxy-2-(quinoline-3-carbonylamino)benzoyl moiety in 4 was replaced with a 4-methoxycarbonylbenzoyl moiety bearing a hetarylcarboxamido group in 3-position, e.g., quinoline-3-carboxamido (5, IC(50): 119 nM) or quinoline-2-carboxamido (6, IC(50): 60 nM, flow cytometric mitoxantrone efflux assay, topotecan-resistant MCF-7 breast cancer cells); the selectivity for ABCG2 over ABCB1 was about 100-500 fold and the compounds were inactive at ABCC2 (MRP2). Chemosensitivity assays against MCF-7/Topo cells revealed that the nontoxic inhibitor 6 completely reverted ABCG2-mediated topotecan resistance at concentrations >100 nM, whereas 5 showed ABCG2 independent cytotoxicity. ABCG2 inhibitors might be useful for cancer treatment with respect to reversal of multidrug resistance, overcoming the BBB and targeting of tumor stem cells.
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Affiliation(s)
- Matthias Kühnle
- Department of Pharmaceutical/Medicinal Chemistry II, Institute of Pharmacy, Faculty of Chemistry and Pharmacy, University of Regensburg, D-93053 Regensburg, Germany
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