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Vamvoukaki G, Antoniou AI, Baltas M, Mouray E, Charneau S, Grellier P, Athanassopoulos CM. Synthesis of Novel Artemisinin, Ciprofloxacin, and Norfloxacin Hybrids with Potent Antiplasmodial Activity. Antibiotics (Basel) 2024; 13:142. [PMID: 38391528 PMCID: PMC10886162 DOI: 10.3390/antibiotics13020142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 01/25/2024] [Accepted: 01/27/2024] [Indexed: 02/24/2024] Open
Abstract
The synthesis and antiplasmodial evaluation of new hybrids combining the pharmacophore structures of artemisinin, ciprofloxacin or norfloxacin, and 7-chloroquinoline are reported in this study. The first step for all of the syntheses is the obtainment of key piperazine esters intermediates bearing the drugs ciprofloxacin and norfloxacin. Using these platforms, 18 final compounds were synthesized through a multistep procedure with overall yields ranging between 8 and 20%. All compounds were screened for their antiplasmodial activity against the chloroquine-resistant Plasmodium falciparum FcB1 strain. Compounds 20, 21, 22, and 28, bearing an artesunate fragment with ciprofloxacin, exhibited IC50 values in the range of 3.5-5.4 nM and excellent selectivity indices. Among the compounds bearing the artesunate moiety on the norfloxacin, two of them, 23 and 24, afforded IC50 values of 1.5 nM and 1.9 nM, respectively. They also showed excellent selectivity indices. The most potent compounds were also evaluated against the CQ-resistant Dd2 strain of Plasmodium falciparum, demonstrating that those compounds incorporating the artesunate fragment were the most potent. Finally, the combination of artesunate with either ciprofloxacin or norfloxacin moieties in a single molecular entity proved to substantially enhance the activity and selectivity when compared to the administration of the unconjugated counterparts artesunate/ciprofloxacin and artesunate/norfloxacin.
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Affiliation(s)
- Georgia Vamvoukaki
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Patras, GR-26504 Patras, Greece
| | - Antonia I Antoniou
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Patras, GR-26504 Patras, Greece
| | - Michel Baltas
- CNRS, LCC (Laboratoire de Chimie, de Coordination), Université de Toulouse, UPS, INPT, 205 Route de Narbonne, BP 44099, CEDEX 4, F-31077 Toulouse, France
| | - Elisabeth Mouray
- MCAM, UMR 7245, Muséum National d'Histoire Naturelle, CNRS, CP52, 63 rue Buffon, F-75005 Paris, France
| | - Sebastien Charneau
- MCAM, UMR 7245, Muséum National d'Histoire Naturelle, CNRS, CP52, 63 rue Buffon, F-75005 Paris, France
- Laboratory of Biochemistry and Protein Chemistry, Department of Cell Biology, Institute of Biology, University of Brasilia, Brasilia 70910-900, Brazil
| | - Philippe Grellier
- MCAM, UMR 7245, Muséum National d'Histoire Naturelle, CNRS, CP52, 63 rue Buffon, F-75005 Paris, France
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2
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Laiolo J, Graikioti DG, Barbieri CL, Joray MB, Antoniou AI, Vera DMA, Athanassopoulos CM, Carpinella MC. Novel betulin derivatives as multidrug reversal agents targeting P-glycoprotein. Sci Rep 2024; 14:70. [PMID: 38167542 PMCID: PMC10762177 DOI: 10.1038/s41598-023-49939-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 12/13/2023] [Indexed: 01/05/2024] Open
Abstract
Chemotherapy is a powerful means of cancer treatment but its efficacy is compromised by the emergence of multidrug resistance (MDR), mainly linked to the efflux transporter ABCB1/P-glycoprotein (P-gp). Based on the chemical structure of betulin, identified in our previous work as an effective modulator of the P-gp function, a series of analogs were designed, synthesized and evaluated as a source of novel inhibitors. Compounds 6g and 6i inhibited rhodamine 123 efflux in the P-gp overexpressed leukemia cells, K562/Dox, at concentrations of 0.19 µM and 0.39 µM, respectively, and increased the intracellular accumulation of doxorubicin at the submicromolar concentration of 0.098 µM. Compounds 6g and 6i were able to restore the sensitivity of K562/Dox to Dox at 0.024 µM and 0.19 µM, respectively. Structure-activity relationship analysis and molecular modeling revealed important information about the structural features conferring activity. All the active compounds fitted in a specific region involving mainly transmembrane helices (TMH) 4-6 from one homologous half and TMH 7 and 12 from the other, also showing close contacts with TMH 6 and 12. Compounds that bound preferentially to another region were inactive, regardless of their free energy of binding. It should be noted that compounds 6g and 6i were devoid of toxic effects against peripheral blood mononuclear normal cells and erythrocytes. The data obtained indicates that both compounds might be proposed as scaffolds for obtaining promising P-gp inhibitors for overcoming MDR.
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Affiliation(s)
- Jerónimo Laiolo
- Fine Chemical and Natural Products Laboratory, IRNASUS CONICET-UCC, Universidad Católica de Córdoba, Córdoba, Argentina
| | - Dafni G Graikioti
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Patras, 26504, Patras, Greece
| | - Cecilia L Barbieri
- Department of Chemistry and Biochemistry, College of Exact and Natural Sciences, Universidad Nacional de Mar del Plata - QUIAMM - INBIOTEC CONICET, Mar del Plata, Argentina
| | - Mariana B Joray
- Fine Chemical and Natural Products Laboratory, IRNASUS CONICET-UCC and CIDIE CONICET-UCC, Universidad Católica de Córdoba, Córdoba, Argentina
| | - Antonia I Antoniou
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Patras, 26504, Patras, Greece
| | - D Mariano A Vera
- Department of Chemistry and Biochemistry, College of Exact and Natural Sciences, Universidad Nacional de Mar del Plata - QUIAMM - INBIOTEC CONICET, Mar del Plata, Argentina.
| | | | - María C Carpinella
- Fine Chemical and Natural Products Laboratory, IRNASUS CONICET-UCC and CIDIE CONICET-UCC, Universidad Católica de Córdoba, Córdoba, Argentina.
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3
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Banti CN, Piperoudi AA, Raptopoulou CP, Psycharis V, Athanassopoulos CM, Hadjikakou SK. Mitochondriotropic agents conjugated with NSAIDs through metal ions against breast cancer cells. J Inorg Biochem 2024; 250:112420. [PMID: 37918185 DOI: 10.1016/j.jinorgbio.2023.112420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 10/09/2023] [Accepted: 10/21/2023] [Indexed: 11/04/2023]
Abstract
Two copper(I) polymorphs of formula [Cu(SALH)(TPP)3] (1a and 1b) were prepared by the conjugation of the Non-Steroidal Anti-Inflammatory Drug (NSAID) salicylic acid (SALH2) with the mitochondriotropic agent triphenylphosphine (TPP) via metal ion. For comparison, the isomorph [Ag(SALH)(TPP)3] (2) was prepared. The conjugates 1a, 1b and 2 were characterized by melting point (m.p.), Attenuated total reflection Fourier-transform infrared (ATR-FTIR) spectroscopy, Ultraviolet-Visible (UV-Vis) spectroscopy and nuclear magnetic resonance (1H NMR). The crystal structures of 1a, 1b and 2 were confirmed by X-ray diffraction crystallography (XRD). The ex vivo binding affinity of 1-2 towards CT (calf thymus)-DNA was studied by UV, fluorescence, viscosity and DNA Thermal Denaturation studies. Their inhibitory activity against lipoxygenase (LOX) (an enzyme which is mainly located in the mitochondrion) was determined. The in vitro activity of 1-2 was evaluated against human breast cancer cell lines MCF-7 (hormone depended (HD)) and MDA-MB 281 (hormone independent (HI)) cells. Compounds 1-2 inhibit stronger than cisplatin the cancerous cells. The molecular mechanism of action of 1-2 was suspected by the MCF-7 cells morphology and confirmed by DNA fragmentation, Acridine Orange/Ethidium Bromide (AO/EB) Staining and mitochondrial membrane permeabilization tests.
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Affiliation(s)
- Christina N Banti
- Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, Ioannina 45110, Greece.
| | - Angeliki A Piperoudi
- Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, Ioannina 45110, Greece
| | - Catherine P Raptopoulou
- NCSR "Demokritos", Institute of Nanoscience and Nanotechnology, A. Paraskevi Attikis, Greece
| | - Vassilis Psycharis
- NCSR "Demokritos", Institute of Nanoscience and Nanotechnology, A. Paraskevi Attikis, Greece
| | | | - Sotiris K Hadjikakou
- Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, Ioannina 45110, Greece; University Research Centre of Ioannina (URCI), Institute of Materials Science and Computing, Ioannina, Greece.
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4
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Ferro A, Pantazaka E, Athanassopoulos CM, Cuendet M. Histone deacetylase-based dual targeted inhibition in multiple myeloma. Med Res Rev 2023; 43:2177-2236. [PMID: 37191917 DOI: 10.1002/med.21972] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 04/08/2023] [Accepted: 04/30/2023] [Indexed: 05/17/2023]
Abstract
Despite enormous advances in terms of therapeutic strategies, multiple myeloma (MM) still remains an incurable disease with MM patients often becoming resistant to standard treatments. To date, multiple combined and targeted therapies have proven to be more beneficial compared to monotherapy approaches, leading to a decrease in drug resistance and an improvement in median overall survival in patients. Moreover, recent breakthroughs highlighted the relevant role of histone deacetylases (HDACs) in cancer treatment, including MM. Thus, the simultaneous use of HDAC inhibitors with other conventional regimens, such as proteasome inhibitors, is of interest in the field. In this review, we provide a general overview of HDAC-based combination treatments in MM, through a critical presentation of publications from the past few decades related to in vitro and in vivo studies, as well as clinical trials. Furthermore, we discuss the recent introduction of dual-inhibitor entities that could have the same beneficial effects as drug combinations with the advantage of having two or more pharmacophores in one molecular structure. These findings could represent a starting-point for both reducing therapeutic doses and lowering the risk of developing drug resistance.
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Affiliation(s)
- Angelica Ferro
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Evangelia Pantazaka
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Patras, Patras, Greece
- Laboratory of Biochemistry/Metastatic Signaling, Section of Genetics, Cell Biology, and Development, Department of Biology, University of Patras, Patras, Greece
| | | | - Muriel Cuendet
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
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5
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Colombo E, Aydın EM, Canıtez İS, Polito L, Penconi M, Bossi A, Impresari E, Passarella D, Dallavalle S, Athanassopoulos CM, Pellegrino S, Şahin ID, Christodoulou MS. Tetraphenylethylene-Based Photoluminescent Self-Assembled Nanoparticles: Preparation and Biological Evaluation. ACS Med Chem Lett 2023; 14:1472-1477. [PMID: 37849561 PMCID: PMC10577884 DOI: 10.1021/acsmedchemlett.3c00396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 09/26/2023] [Indexed: 10/19/2023] Open
Abstract
The conjugation of tetraphenylethylene (TPE) with podophyllotoxin, N-desacetylthiocolchicine, and cabazitaxel through a sebacic acid linker led to the formation of fluorescent nanoparticles. Dynamic light scattering (DLS) and photoluminescence spectroscopy were used for the identification and characterization of the fluorescent nanoparticles. The biological evaluation was determined in three human ovarian (KURAMOCHI, OVCAR3, OVSAHO) and three human breast (MCF7, SKBR 3, and MDA-MB231) cancer cell lines. In the case of cabazitaxel, the nanoparticles maintained the activity of the parent drug, at the low nanomolar range, while exhibiting high blue fluorescence. The internalization of the fluorescent NPs into cells was detected using immunofluorescence assay.
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Affiliation(s)
- Eleonora Colombo
- Dipartimento
di Chimica, Universitá degli Studi
di Milano, 20133 Milano, Italy
- Ann Romney
Center for Neurologic Diseases, Department of Neurology, Brigham and Women’s Hospital and Harvard Medical
School, Boston, Massachusetts 02115, United States
| | - Elif Merve Aydın
- Koc
University Research Center for Translational Medicine (KUTTAM), Sariyer, Istanbul 34450, Turkey
| | - İdil Su Canıtez
- Koc
University Research Center for Translational Medicine (KUTTAM), Sariyer, Istanbul 34450, Turkey
| | - Laura Polito
- Istituto
di Scienze e Tecnologie Chimiche “Giulio Natta”, SCITEC−CNR, 20138 Milano, Italy
| | - Marta Penconi
- Istituto
di Scienze e Tecnologie Chimiche “Giulio Natta”, SCITEC−CNR, 20138, Milano, Italy
- SmartMatLab
Center, 20133 Milano, Italy
| | - Alberto Bossi
- Istituto
di Scienze e Tecnologie Chimiche “Giulio Natta”, SCITEC−CNR, 20138, Milano, Italy
- SmartMatLab
Center, 20133 Milano, Italy
| | - Elisa Impresari
- DISFARM,
Dipartimento di Scienze Farmaceutiche, Sezione Chimica Generale e
Organica “A. Marchesini”, Università degli Studi di Milano, 20133 Milano, Italy
| | - Daniele Passarella
- Dipartimento
di Chimica, Universitá degli Studi
di Milano, 20133 Milano, Italy
| | - Sabrina Dallavalle
- Department
of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, via Celoria 2, 20133 Milan, Italy
| | | | - Sara Pellegrino
- DISFARM,
Dipartimento di Scienze Farmaceutiche, Sezione Chimica Generale e
Organica “A. Marchesini”, Università degli Studi di Milano, 20133 Milano, Italy
| | | | - Michael S. Christodoulou
- Department
of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, via Celoria 2, 20133 Milan, Italy
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Tsirogianni A, Kournoutou GG, Mpogiatzoglou M, Dinos G, Athanassopoulos CM. Chloramphenicol Derivatization in Its Primary Hydroxyl Group with Basic Amino Acids Leads to New Pharmacophores with High Antimicrobial Activity. Antibiotics (Basel) 2023; 12:antibiotics12050832. [PMID: 37237735 DOI: 10.3390/antibiotics12050832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/05/2023] [Accepted: 04/27/2023] [Indexed: 05/28/2023] Open
Abstract
In a previous study published by our group, successful modification of the antibiotic chloramphenicol (CHL) was reported, which was achieved by replacing the dichloroacetyl tail with alpha and beta amino acids, resulting in promising new antibacterial pharmacophores. In this study, CHL was further modified by linking the basic amino acids lysine, ornithine, and histidine to the primary hydroxyl group of CHL via triazole, carbamate, or amide bonding. Our results showed that while linking the basic amino acids retained antibacterial activity, it was somewhat reduced compared to CHL. However, in vitro testing demonstrated that all derivatives were comparable in activity to CHL and competed for the same ribosomal binding site with radioactive chloramphenicol. The amino acid-CHL tethering modes were evaluated either with carbamate (7, 8) derivatives, which exhibited higher activity, or with amide- (4-6) or triazole-bridged compounds (1-3), which were equally potent. Our findings suggest that these new pharmacophores have potential as antimicrobial agents, though further optimization is needed.
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Affiliation(s)
- Artemis Tsirogianni
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Patras, GR-26504 Patras, Greece
| | - Georgia G Kournoutou
- Department of Biochemistry, School of Medicine, University of Patras, GR-26504 Patras, Greece
| | - Maria Mpogiatzoglou
- Department of Biochemistry, School of Medicine, University of Patras, GR-26504 Patras, Greece
| | - George Dinos
- Department of Biochemistry, School of Medicine, University of Patras, GR-26504 Patras, Greece
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7
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Rijo P, Athanassopoulos CM, Carpinella MC. Editorial: Considering plant metabolites and their synthetic derivatives as candidates for the development of drugs against multidrug resistant (MDR) tumors. Front Pharmacol 2022; 13:1108252. [PMID: 36569312 PMCID: PMC9768599 DOI: 10.3389/fphar.2022.1108252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022] Open
Affiliation(s)
- Patricia Rijo
- CBIOS—Universidade Lusófona Research Center for Biosciences & Health Technologies, Lisbon, Portugal,Faculty of Pharmacy, Instituto de Investigação do Medicamento (iMed.ULisboa), University of Lisbon, Lisbon, Portugal,*Correspondence: Patricia Rijo, ; Constantinos M. Athanassopoulos, ; María Cecilia Carpinella,
| | - Constantinos M. Athanassopoulos
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Patras, Patras, Greece,*Correspondence: Patricia Rijo, ; Constantinos M. Athanassopoulos, ; María Cecilia Carpinella,
| | - María Cecilia Carpinella
- Fine Chemical and Natural Products Laboratory, IRNASUS CONICET-UCC, School of Chemistry, Universidad Católica de Córdoba, Córdoba, Argentina,*Correspondence: Patricia Rijo, ; Constantinos M. Athanassopoulos, ; María Cecilia Carpinella,
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8
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Sülsen VP, Athanassopoulos CM, Padrón JM, Tamura RE. Editorial: Natural compounds as scaffolds for the discovery of new anti-cancer drugs: Focus on terpenoids and flavonoids. Front Pharmacol 2022; 13:984849. [PMID: 36034856 PMCID: PMC9404503 DOI: 10.3389/fphar.2022.984849] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 07/12/2022] [Indexed: 12/22/2022] Open
Affiliation(s)
- Valeria P. Sülsen
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)—Universidad de Buenos Aires, Instituto de Química y Metabolismo del Fármaco (IQUIMEFA), Junín, Buenos Aires, Argentina
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Farmacognosia, Junín, Buenos Aires, Argentina
- *Correspondence: Valeria P. Sülsen,
| | | | - José M. Padrón
- BioLab, Instituto Universitario de Bio-Orgánica Antonio González (IUBO-AG), Universidad de La Laguna, La Laguna, Spain
| | - Rodrigo E. Tamura
- Departamento de Ciências Biológicas, Universidade Federal de São Paulo, Diadema, SP, Brazil
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9
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Pantazaka E, Graikioti D, Athanassopoulos CM, Kallergi G. Abstract 1119: Non-adherent breast and non-small-cell lung cancer cell cultures as a promising CTCs’ model for evaluation of the anti-tumor effects of artesunate. Cancer Res 2022. [DOI: 10.1158/1538-7445.am2022-1119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Artesunate (AS), besides being widely used as an antimalarial agent, has been also suggested to exert anti-tumor activity in a plethora of cancer types, including breast and lung cancer. Recently, AS has been shown to inhibit the expression of JunB, which is associated with metastatic progression. The aim of this study is to examine the effect of AS on the viability of both adherent and non-adherent (resembling circulating tumor cells; CTCs) breast and lung cancer cell cultures.
Methods: Prevention of cell attachment and establishment of the CTCs’ model was achieved via polyHEMA [poly(2-hydroxyethyl methacrylate)] treatment. Viability of adherent and non-adherent MDA-MB-231 (triple negative breast cancer) and H1299 (non-small-cell lung cancer) cells was assessed by the 3-(4,5-dimethylthiazol-2-yl)-2,5-dimethyltetrazolium bromide (MTT) assay, 48 h following treatment with different concentrations of AS (3 μM to 100 μΜ) in serum starvation conditions. Cell migration was examined using the wound healing assay.
Results: Optimization involving the duration (20 min vs. overnight) and concentration (10 mg/ml) of polyHEMA coating, as well as the duration of AS treatment (24 h vs. 48 h) were performed. 5-fluorouracil was used as a positive control. AS decreased viability of both cell lines in a concentration-dependent manner with comparable IC50, whether being adherent (pIC50 = 4.6 ± 0.1 and 5.1 ± 0.1 for MDA-MB-231 and H1299, respectively; n = 8) or non-adherent (pIC50 = 4.5 ± 0.1 and 4.9 ± 0.1 for MDA-MB-231 and H1299, respectively; n =8). AS (10 μΜ, 48 h) inhibited proliferation of both adherent MDA-MB-231 (34% ± 5, n = 8) and H1299 (57% ± 4, n = 8) cells. Interestingly, the effect of AS on MDA-MB-231 and H1299 non-adherent cultures was less prominent (15% ± 6 and 26% ± 6, P<0.001, respectively; n = 8), demonstrating resistance to AS. Furthermore, AS (10 μM, 48 h) decreased cell migration, an effect which was more pronounced in H1299 cells.
Conclusions: Evidently, non-adherent, free-floating cells seem to respond differently to AS compared to their attached counterparts. These results suggest that antitumor agents might exert different effects in CTCs compared to adherent tumor cells.
Acknowledgements: This research has been co-financed by the European Union and Greek national funds through the Operational Program Competitiveness, Entrepreneurship and Innovation, under the call RESEARCH - CREATE - INNOVATE (project code: T2ΕΔΚ-01562).
Citation Format: Evangelia Pantazaka, Dafni Graikioti, Constantinos M. Athanassopoulos, Galatea Kallergi. Non-adherent breast and non-small-cell lung cancer cell cultures as a promising CTCs’ model for evaluation of the anti-tumor effects of artesunate [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 1119.
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Affiliation(s)
- Evangelia Pantazaka
- 1Division of Genetics, Cell and Developmental Biology, Department of Biology, University of Patras, Patras, Greece
| | - Dafni Graikioti
- 2Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Patras, Patras, Greece
| | | | - Galatea Kallergi
- 1Division of Genetics, Cell and Developmental Biology, Department of Biology, University of Patras, Patras, Greece
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10
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Funes Chabán M, Hrast M, Frlan R, Graikioti DG, Athanassopoulos CM, Carpinella MC. Inhibition of MurA Enzyme from Escherichia coli and Staphylococcus aureus by Diterpenes from Lepechinia meyenii and Their Synthetic Analogs. Antibiotics (Basel) 2021; 10:1535. [PMID: 34943747 PMCID: PMC8698320 DOI: 10.3390/antibiotics10121535] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 12/07/2021] [Accepted: 12/09/2021] [Indexed: 12/11/2022] Open
Abstract
Enzymes MurA and MurF, involved in bacterial cell wall synthesis, have been validated as targets for the discovery of novel antibiotics. A panel of plant-origin antibacterial diterpenes and synthetic analogs derived therefrom were investigated for their inhibitory properties on these enzymes from Escherichia coli and Staphylococcus aureus. Six compounds were proven to be effective for inhibiting MurA from both bacteria, with IC50 values ranging from 1.1 to 25.1 µM. To further mechanistically investigate the nature of binding and to explain the activity, these compounds were docked into the active site of MurA from E. coli. The aromatic ring of the active compounds showed a T-shaped π-π interaction with the phenyl ring of Phe328, and at least one hydrogen bond was formed between the hydroxy groups and Arg120 and/or Arg91. The results disclosed here establish new chemical scaffolds for the development of novel entities targeting MurA as potential antibiotics to combat the threat of pathogenic bacteria, particularly resistant strains.
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Affiliation(s)
- Macarena Funes Chabán
- Fine Chemical and Natural Products Laboratory, IRNASUS CONICET-UCC, Universidad Católica de Córdoba, Córdoba 5016, Argentina;
| | - Martina Hrast
- Faculty of Pharmacy, University of Ljubljana, SI-1000 Ljubljana, Slovenia; (M.H.); (R.F.)
| | - Rok Frlan
- Faculty of Pharmacy, University of Ljubljana, SI-1000 Ljubljana, Slovenia; (M.H.); (R.F.)
| | - Dafni G. Graikioti
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Patras, 26504 Patras, Greece; (D.G.G.); (C.M.A.)
| | - Constantinos M. Athanassopoulos
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Patras, 26504 Patras, Greece; (D.G.G.); (C.M.A.)
| | - María Cecilia Carpinella
- Fine Chemical and Natural Products Laboratory, IRNASUS CONICET-UCC, Universidad Católica de Córdoba, Córdoba 5016, Argentina;
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11
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Koumpoura CL, Robert A, Athanassopoulos CM, Baltas M. Antimalarial Inhibitors Targeting Epigenetics or Mitochondria in Plasmodium falciparum: Recent Survey upon Synthesis and Biological Evaluation of Potential Drugs against Malaria. Molecules 2021; 26:molecules26185711. [PMID: 34577183 PMCID: PMC8467436 DOI: 10.3390/molecules26185711] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 09/14/2021] [Accepted: 09/16/2021] [Indexed: 12/01/2022] Open
Abstract
Despite many efforts, malaria remains among the most problematic infectious diseases worldwide, mainly due to the development of drug resistance by P. falciparum. Over the past decade, new essential pathways have been emerged to fight against malaria. Among them, epigenetic processes and mitochondrial metabolism appear to be important targets. This review will focus on recent evolutions concerning worldwide efforts to conceive, synthesize and evaluate new drug candidates interfering selectively and efficiently with these two targets and pathways. The focus will be on compounds/scaffolds that possess biological/pharmacophoric properties on DNA methyltransferases and HDAC’s for epigenetics, and on cytochrome bc1 and dihydroorotate dehydrogenase for mitochondrion.
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Affiliation(s)
- Christina L. Koumpoura
- CNRS, LCC (Laboratoire de Chimie de Coordination), Université de Toulouse, UPS, INPT, Inserm ERL 1289, 205 Route de Narbonne, BP 44099, CEDEX 4, F-31077 Toulouse, France; (C.L.K.); (A.R.)
| | - Anne Robert
- CNRS, LCC (Laboratoire de Chimie de Coordination), Université de Toulouse, UPS, INPT, Inserm ERL 1289, 205 Route de Narbonne, BP 44099, CEDEX 4, F-31077 Toulouse, France; (C.L.K.); (A.R.)
| | | | - Michel Baltas
- CNRS, LCC (Laboratoire de Chimie de Coordination), Université de Toulouse, UPS, INPT, Inserm ERL 1289, 205 Route de Narbonne, BP 44099, CEDEX 4, F-31077 Toulouse, France; (C.L.K.); (A.R.)
- Correspondence:
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12
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Pediconi N, Ghirga F, Del Plato C, Peruzzi G, Athanassopoulos CM, Mori M, Crestoni ME, Corinti D, Ugozzoli F, Massera C, Arcovito A, Botta B, Boffi A, Quaglio D, Baiocco P. Design and Synthesis of Piperazine-Based Compounds Conjugated to Humanized Ferritin as Delivery System of siRNA in Cancer Cells. Bioconjug Chem 2021; 32:1105-1116. [PMID: 33978420 PMCID: PMC8253483 DOI: 10.1021/acs.bioconjchem.1c00137] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/27/2021] [Indexed: 01/23/2023]
Abstract
Gene expression regulation by small interfering RNA (siRNA) holds promise in treating a wide range of diseases through selective gene silencing. However, successful clinical application of nucleic acid-based therapy requires novel delivery options. Herein, to achieve efficient delivery of negatively charged siRNA duplexes, the internal cavity of "humanized" chimeric Archaeal ferritin (HumAfFt) was specifically decorated with novel cationic piperazine-based compounds (PAs). By coupling these rigid-rod-like amines with thiol-reactive reagents, chemoselective conjugation was efficiently afforded on topologically selected cysteine residues properly located inside HumAfFt. The capability of PAs-HumAfFt to host and deliver siRNA molecules through human transferrin receptor (TfR1), overexpressed in many cancer cells, was explored. These systems allowed siRNA delivery into HeLa, HepG2, and MCF-7 cancer cells with improved silencing effect on glyceraldehyde-3-phosphate dehydrogenase (GAPDH) gene expression with respect to traditional transfection methodologies and provided a promising TfR1-targeting system for multifunctional siRNA delivery to therapeutic applications.
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Affiliation(s)
- Natalia Pediconi
- Center
for Life Nano- & Neuro-Science, Fondazione
Istituto Italiano di Tecnologia (IIT), V.le Regina Elena 291, 00161 Rome, Italy
| | - Francesca Ghirga
- Department
of Chemistry and Technology of Drugs, “Department of Excellence
2018−2022”, Sapienza University
of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Cristina Del Plato
- Center
for Life Nano- & Neuro-Science, Fondazione
Istituto Italiano di Tecnologia (IIT), V.le Regina Elena 291, 00161 Rome, Italy
- Department
of Chemistry and Technology of Drugs, “Department of Excellence
2018−2022”, Sapienza University
of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Giovanna Peruzzi
- Center
for Life Nano- & Neuro-Science, Fondazione
Istituto Italiano di Tecnologia (IIT), V.le Regina Elena 291, 00161 Rome, Italy
| | - Constantinos M. Athanassopoulos
- Department
of Chemistry, University of Patras, GR-26504 Rio-Patras, Greece
- Department
of Biochemical Sciences “Alessandro Rossi Fanelli”, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Mattia Mori
- Department
of Biotechnology, Chemistry and Pharmacy, “Department of Excellence
2018−2022”, University of
Siena, via Aldo Moro 2, 53100, Siena, Italy
| | - Maria Elisa Crestoni
- Department
of Chemistry and Technology of Drugs, “Department of Excellence
2018−2022”, Sapienza University
of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Davide Corinti
- Department
of Chemistry and Technology of Drugs, “Department of Excellence
2018−2022”, Sapienza University
of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Franco Ugozzoli
- Department
of Engineering and Architecture, University
of Parma, Parco Area delle Scienze 181/A, 43124 Parma, Italy
| | - Chiara Massera
- Department
of Chemical Sciences, Life and Environmental Sustainability, University of Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Alessandro Arcovito
- Dipartimento
di Scienze Biotecnologiche di base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Largo F. Vito 1, 00168, Roma, Italy
| | - Bruno Botta
- Department
of Chemistry and Technology of Drugs, “Department of Excellence
2018−2022”, Sapienza University
of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Alberto Boffi
- Center
for Life Nano- & Neuro-Science, Fondazione
Istituto Italiano di Tecnologia (IIT), V.le Regina Elena 291, 00161 Rome, Italy
- Department
of Biochemical Sciences “Alessandro Rossi Fanelli”, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
- Institute
of Molecular Biology and Pathology, National
Research Council, P.le
A. Moro 7, 00185 Rome, Italy
| | - Deborah Quaglio
- Department
of Chemistry and Technology of Drugs, “Department of Excellence
2018−2022”, Sapienza University
of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Paola Baiocco
- Center
for Life Nano- & Neuro-Science, Fondazione
Istituto Italiano di Tecnologia (IIT), V.le Regina Elena 291, 00161 Rome, Italy
- Department
of Biochemical Sciences “Alessandro Rossi Fanelli”, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
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13
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Tsirogianni A, Kournoutou GG, Bougas A, Poulou-Sidiropoulou E, Dinos G, Athanassopoulos CM. New Chloramphenicol Derivatives with a Modified Dichloroacetyl Tail as Potential Antimicrobial Agents. Antibiotics (Basel) 2021; 10:antibiotics10040394. [PMID: 33917453 PMCID: PMC8067500 DOI: 10.3390/antibiotics10040394] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/01/2021] [Accepted: 04/03/2021] [Indexed: 12/02/2022] Open
Abstract
To combat the dangerously increasing pathogenic resistance to antibiotics, we developed new pharmacophores by chemically modifying a known antibiotic, which remains to this day the most familiar and productive way for novel antibiotic development. We used as a starting material the chloramphenicol base, which is the free amine group counterpart of the known chloramphenicol molecule antibiotic upon removal of its dichloroacetyl tail. To this free amine group, we tethered alpha- and beta-amino acids, mainly glycine, lysine, histidine, ornithine and/or beta-alanine. Furthermore, we introduced additional modifications to the newly incorporated amine groups either with protecting groups triphenylmethyl- (Trt) and tert-butoxycarbonyl- (Boc) or with the dichloroacetic group found also in the chloramphenicol molecule. The antimicrobial activity of all compounds was tested both in vivo and in vitro, and according to the results, the bis-dichloroacetyl derivative of ornithine displayed the highest antimicrobial activity both in vivo and in vitro and seems to be a dynamic new pharmacophore with room for further modification and development.
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Affiliation(s)
- Artemis Tsirogianni
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Patras, 26504 Patras, Greece;
| | - Georgia G. Kournoutou
- Department of Biochemistry, School of Medicine, University of Patras, 26504 Patras, Greece; (G.G.K.); (A.B.); (E.P.-S.)
| | - Anthony Bougas
- Department of Biochemistry, School of Medicine, University of Patras, 26504 Patras, Greece; (G.G.K.); (A.B.); (E.P.-S.)
| | - Eleni Poulou-Sidiropoulou
- Department of Biochemistry, School of Medicine, University of Patras, 26504 Patras, Greece; (G.G.K.); (A.B.); (E.P.-S.)
| | - George Dinos
- Department of Biochemistry, School of Medicine, University of Patras, 26504 Patras, Greece; (G.G.K.); (A.B.); (E.P.-S.)
- Correspondence: (G.D.); (C.M.A.); Tel.: +30-2610-969-125 (G.D.); +30-2610-997-909 (C.M.A.)
| | - Constantinos M. Athanassopoulos
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Patras, 26504 Patras, Greece;
- Correspondence: (G.D.); (C.M.A.); Tel.: +30-2610-969-125 (G.D.); +30-2610-997-909 (C.M.A.)
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14
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Pepe DA, Toumpa D, André-Barrès C, Menendez C, Mouray E, Baltas M, Grellier P, Papaioannou D, Athanassopoulos CM. Synthesis of Novel G Factor or Chloroquine-Artemisinin Hybrids and Conjugates with Potent Antiplasmodial Activity. ACS Med Chem Lett 2020; 11:921-927. [PMID: 32435406 DOI: 10.1021/acsmedchemlett.9b00669] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 03/24/2020] [Indexed: 11/28/2022] Open
Abstract
A series of novel hybrids of artemisinin (ART) with either a phytormone endoperoxide G factor analogue (GMeP) or chloroquine (CQ) and conjugates of the same compounds with the polyamines (PAs), spermidine (Spd), and homospermidine (Hsd) were synthesized and their antiplasmodial activity was evaluated using the CQ-resistant P. falciparum FcB1/Colombia strain. The ART-GMeP hybrid 5 and compounds 9 and 10 which are conjugates of Spd and Hsd with two molecules of ART and one molecule of GMeP, were the most potent with IC50 values of 2.6, 8.4, and 10.6 nM, respectively. The same compounds also presented the highest selectivity indexes against the primary human fibroblast cell line AB943 ranging from 16 372 for the hybrid 5 to 983 for the conjugate 10 of Hsd.
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Affiliation(s)
- Dionissia A. Pepe
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Patras, Patras GR-26504, Greece
| | - Dimitra Toumpa
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Patras, Patras GR-26504, Greece
| | - Christiane André-Barrès
- LSPCMIB, UMR-CNRS 5068, Université Paul Sabatier-Toulouse III, 118 route de Narbonne, Toulouse CEDEX 9 31062, France
| | - Christophe Menendez
- LSPCMIB, UMR-CNRS 5068, Université Paul Sabatier-Toulouse III, 118 route de Narbonne, Toulouse CEDEX 9 31062, France
| | - Elisabeth Mouray
- MCAM, UMR 7245 CNRS, Muséum National d’Histoire Naturelle, CNRS, CP52, 57 rue Cuvier, Paris 75005, France
| | - Michel Baltas
- LSPCMIB, UMR-CNRS 5068, Université Paul Sabatier-Toulouse III, 118 route de Narbonne, Toulouse CEDEX 9 31062, France
| | - Philippe Grellier
- MCAM, UMR 7245 CNRS, Muséum National d’Histoire Naturelle, CNRS, CP52, 57 rue Cuvier, Paris 75005, France
| | - Dionissios Papaioannou
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Patras, Patras GR-26504, Greece
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15
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Temperini A, Aiello D, Mazzotti F, Athanassopoulos CM, De Luca P, Siciliano C. 2,3-Diaminopropanols Obtained from d-Serine as Intermediates in the Synthesis of Protected 2,3-l-Diaminopropanoic Acid (l-Dap) Methyl Esters. Molecules 2020; 25:molecules25061313. [PMID: 32183079 PMCID: PMC7145313 DOI: 10.3390/molecules25061313] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 03/10/2020] [Accepted: 03/12/2020] [Indexed: 11/16/2022] Open
Abstract
A synthetic strategy for the preparation of two orthogonally protected methyl esters of the non-proteinogenic amino acid 2,3-l-diaminopropanoic acid (l-Dap) was developed. In these structures, the base-labile protecting group 9-fluorenylmethyloxycarbonyl (Fmoc) was paired to the p-toluensulfonyl (tosyl, Ts) or acid-labile tert-butyloxycarbonyl (Boc) moieties. The synthetic approach to protected l-Dap methyl esters uses appropriately masked 2,3-diaminopropanols, which are obtained via reductive amination of an aldehyde prepared from the commercial amino acid Nα-Fmoc-O-tert-butyl-d-serine, used as the starting material. Reductive amination is carried out with primary amines and sulfonamides, and the process is assisted by the Lewis acid Ti(OiPr)4. The required carboxyl group is installed by oxidizing the alcoholic function of 2,3-diaminopropanols bearing the tosyl or benzyl protecting group on the 3-NH2 site. The procedure can easily be applied using the crude product obtained after each step, minimizing the need for chromatographic purifications. Chirality of the carbon atom of the starting d-serine template is preserved throughout all synthetic steps.
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Affiliation(s)
- Andrea Temperini
- Dipartimento di Scienze Farmaceutiche, Università di Perugia, Via del Liceo 1, 06123 Perugia, Italy;
| | - Donatella Aiello
- Dipartimento di Chimica e Tecnologie Chimiche (CTC), Via Ponte P. Bucci, Cubo 12D, Università della Calabria, I-87036 Arcavacata di Rende (CS), Italy; (D.A.); (F.M.)
| | - Fabio Mazzotti
- Dipartimento di Chimica e Tecnologie Chimiche (CTC), Via Ponte P. Bucci, Cubo 12D, Università della Calabria, I-87036 Arcavacata di Rende (CS), Italy; (D.A.); (F.M.)
| | | | - Pierantonio De Luca
- Dipartimento di Ingegneria Meccanica, Energetica e Gestionale, Università della Calabria, I-87036 Arcavacata di Rende (CS), Italy;
| | - Carlo Siciliano
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Edificio Polifunzionale, Università della Calabria, I-87036 Arcavacata di Rende (CS), Italy
- Correspondence: ; Tel.: +39-0984-493192
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16
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Aiello D, Siciliano C, Mazzotti F, Di Donna L, Athanassopoulos CM, Napoli A. A rapid MALDI MS/MS based method for assessing saffron (Crocus sativus L.) adulteration. Food Chem 2020; 307:125527. [DOI: 10.1016/j.foodchem.2019.125527] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 05/02/2019] [Accepted: 09/12/2019] [Indexed: 01/07/2023]
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17
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Kalantzi S, Athanassopoulos CM, Ruonala R, Helariutta Y, Papaioannou D. General Approach for the Liquid-Phase Fragment Synthesis of Orthogonally Protected Naturally Occurring Polyamines and Applications Thereof. J Org Chem 2019; 84:15118-15130. [PMID: 31657206 DOI: 10.1021/acs.joc.9b02066] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Orthogonally protected polyamines (PAs) have been synthesized using α,ω-diamines and ω-aminoalcohols as N-Cx-N and N-Cy synthons, respectively, and the Mitsunobu reaction as the key reaction for the assembly of the PA skeleta. The Trt, Dde, and Phth groups have been employed for protecting the primary amino functions and the Ns group for activating the primary amino functions toward alkylation and secondary amino function protection. The approach has been readily extended to accommodate the total synthesis of the spider toxins Agel 416 and HO-416b, incorporating the 3-4-3-3 and the 3-3-3-4 PA skeleton, respectively.
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Affiliation(s)
- Stefania Kalantzi
- Laboratory of Synthetic Organic Chemistry, Department of Chemistry , University of Patras , GR-26504 Patras , Greece
| | | | - Raili Ruonala
- Sainsbury Laboratory , University of Cambridge , Bateman Street , Cambridge CB2 1LR , U.K.,Institute of Biotechnology, HiLIFE/Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences , Viikki Plant Science Centre, University of Helsinki , FI-00014 Helsinki , Finland
| | - Yrjo Helariutta
- Sainsbury Laboratory , University of Cambridge , Bateman Street , Cambridge CB2 1LR , U.K.,Institute of Biotechnology, HiLIFE/Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences , Viikki Plant Science Centre, University of Helsinki , FI-00014 Helsinki , Finland
| | - Dionissios Papaioannou
- Laboratory of Synthetic Organic Chemistry, Department of Chemistry , University of Patras , GR-26504 Patras , Greece
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18
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Chabán MF, Karagianni C, Joray MB, Toumpa D, Sola C, Crespo MI, Palacios SM, Athanassopoulos CM, Carpinella MC. Antibacterial effects of extracts obtained from plants of Argentina: Bioguided isolation of compounds from the anti-infectious medicinal plant Lepechinia meyenii. J Ethnopharmacol 2019; 239:111930. [PMID: 31059749 DOI: 10.1016/j.jep.2019.111930] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 04/17/2019] [Accepted: 04/30/2019] [Indexed: 05/24/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The mostly native species from Argentina are used in traditional medicine generally for the treatment of pain and inflammation, respiratory, gastro-intestinal and urinary disorders and as antiseptics. AIM OF THE STUDY Since these ailments may be associated with bacterial infections and that it is necessary to discover alternative compounds with antibacterial activity, 69 extracts from these plants were screened for their activity against pathogenic bacteria. The most effective extract was then submitted to bioguided isolation to obtain the compounds responsible for this activity. MATERIALS AND METHODS Extracts and fractions were screened using agar dilution, and compounds using microbroth dilution methods. A large panel of pathogenic bacteria was used, especially methicillin-susceptible Staphylococcus aureus (MSSA) and methicillin-resistant S. aureus (MRSA). Bioguided fractionation was performed using successive chromatographic techniques, while the chemical structures of the isolated compounds were determined by nuclear magnetic resonance (NMR). Additionally, a series of derivatives of the most active compound were prepared in order to study the chemical features required for achieving the antibacterial effect. RESULTS Lepechinia meyenii (Walp.) Epling (Lamiaceae) extract showed itself the most effective, with minimum inhibitory concentration (MIC) against Gram positive and negative bacteria ranging from 62.5 to 500 μg/mL, and showing better activity on MRSA than on MSSA. Activity-guided fractionation yielded the abietanes carnosol (1), rosmanol (2) and carnosic acid (3) as active principles, with MICs ranging from 15.6-31.2, 15.6-62.5 and 7.8-15.6 μg/mL, respectively against 15 MRSA strains, and 15.6-31.2, 31.2-62.5 and 7.8-15.6 μg/mL, respectively against 11 MSSA strains, maintaining higher activity against the resistant bacteria, as does the extract. In addition, Enterococcus faecalis was sensitive to 1-3 with MICs of 15.6-62.5 μg/mL. The structure activity analysis showed that 12-OH is necessary for remarkable activity, but methylation in C-20 significantly increased this, as observed with 20-methyl carnosate (5) displaying the greatest effect, even more so than 3, with MICs of 3.9 μg/mL against all the tested MRSA and 3.9-7.8 μg/mL against the MSSA. CONCLUSIONS The results of this study contribute to validate the traditional antibacterial use of species native to Argentina, particularly of L. meyenii. The chemical structures of the compounds obtained may aid the design of antibacterial agents, especially those effective against MRSA.
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Affiliation(s)
- Macarena Funes Chabán
- IRNASUS CONICET and Fine Chemical and Natural Products Laboratory, School of Chemistry, Catholic University of Córdoba, Avda. Armada Argentina 3555, X5016DHK, Córdoba, Argentina
| | - Catherine Karagianni
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Patras, GR-26504, Patras, Greece
| | - Mariana Belén Joray
- IRNASUS CONICET and Fine Chemical and Natural Products Laboratory, School of Chemistry, Catholic University of Córdoba, Avda. Armada Argentina 3555, X5016DHK, Córdoba, Argentina
| | - Dimitra Toumpa
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Patras, GR-26504, Patras, Greece
| | - Claudia Sola
- CIBICI CONICET and Department of Clinical Biochemistry, Faculty of Chemical Science, National University of Córdoba, Haya de la Torre and Medina Allende, Córdoba, Argentina
| | - María Inés Crespo
- IRNASUS CONICET and Fine Chemical and Natural Products Laboratory, School of Chemistry, Catholic University of Córdoba, Avda. Armada Argentina 3555, X5016DHK, Córdoba, Argentina
| | - Sara María Palacios
- IRNASUS CONICET and Fine Chemical and Natural Products Laboratory, School of Chemistry, Catholic University of Córdoba, Avda. Armada Argentina 3555, X5016DHK, Córdoba, Argentina
| | | | - María Cecilia Carpinella
- IRNASUS CONICET and Fine Chemical and Natural Products Laboratory, School of Chemistry, Catholic University of Córdoba, Avda. Armada Argentina 3555, X5016DHK, Córdoba, Argentina.
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Giannopoulou PC, Missiri DA, Kournoutou GG, Sazakli E, Papadopoulos GE, Papaioannou D, Dinos GP, Athanassopoulos CM, Kalpaxis DL. New Chloramphenicol Derivatives from the Viewpoint of Anticancer and Antimicrobial Activity. Antibiotics (Basel) 2019; 8:antibiotics8010009. [PMID: 30699905 PMCID: PMC6466596 DOI: 10.3390/antibiotics8010009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 01/21/2019] [Accepted: 01/23/2019] [Indexed: 12/26/2022] Open
Abstract
Over the last years, we have been focused on chloramphenicol conjugates that combine in their structure chloramphenicol base with natural polyamines, spermine, spermidine and putrescine, and their modifications. Conjugate 3, with spermidine (SPD) as a natural polyamine linked to chloramphenicol base, showed the best antibacterial and anticancer properties. Using 3 as a prototype, we here explored the influence of the antibacterial and anticancer activity of additional benzyl groups on N1 amino moiety together with modifications of the alkyl length of the aminobutyl fragment of SPD. Our data demonstrate that the novel modifications did not further improve the antibacterial activity of the prototype. However, one of the novel conjugates (4) showed anticancer activity without affecting bacterial growth, thus emerging as a promising anticancer agent, with no adverse effects on bacterial microflora when taken orally.
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Affiliation(s)
| | - Dionissia A Missiri
- Laboratory of Synthetic Organic Chemistry, Department of Chemistry, University of Patras, GR-26504 Patras, Greece.
| | - Georgia G Kournoutou
- Department of Biochemistry, School of Medicine, University of Patras, GR-26504 Patras, Greece.
| | - Eleni Sazakli
- Laboratory of Public Health, School of Medicine, University of Patras, 26504 Patras, Greece.
| | - Georgios E Papadopoulos
- Department of Biochemistry & Biotechnology, University of Thessaly, Biopolis, GR-41500 Larissa, Greece.
| | - Dionissios Papaioannou
- Laboratory of Synthetic Organic Chemistry, Department of Chemistry, University of Patras, GR-26504 Patras, Greece.
| | - George P Dinos
- Department of Biochemistry, School of Medicine, University of Patras, GR-26504 Patras, Greece.
| | | | - Dimitrios L Kalpaxis
- Department of Biochemistry, School of Medicine, University of Patras, GR-26504 Patras, Greece.
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20
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Ricci F, Carrassa L, Christodoulou MS, Passarella D, Michel B, Benhida R, Martinet N, Hunyadi A, Ioannou E, Roussis V, Musso L, Dallavalle S, Silvestri R, Westwood N, Mori M, Ingallina C, Botta B, Kavetsou E, Detsi A, Majer Z, Hudecz F, Bosze S, Kaminska B, Hansen TV, Bertrand P, Athanassopoulos CM, Damia G. A High-throughput Screening of a Chemical Compound Library in Ovarian Cancer Stem Cells. Comb Chem High Throughput Screen 2019; 21:50-56. [PMID: 29366408 DOI: 10.2174/1386207321666180124093406] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 10/16/2017] [Accepted: 12/18/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND Epithelial ovarian cancer has a poor prognosis, mostly due to its late diagnosis and the development of drug resistance after a first platinum-based regimen. The presence of a specific population of "cancer stem cells" could be responsible of the relapse of the tumor and the development of resistance to therapy. For this reason, it would be important to specifically target this subpopulation of tumor cells in order to increase the response to therapy. METHOD We screened a chemical compound library assembled during the COST CM1106 action to search for compound classes active in targeting ovarian stem cells. We here report the results of the high-throughput screening assay in two ovarian cancer stem cells and the differentiated cells derived from them. RESULTS AND CONCLUSION Interestingly, there were compounds active only on stem cells, only on differentiated cells, and compounds active on both cell populations. Even if these data need to be validated in ad hoc dose response cytotoxic experiments, the ongoing analysis of the compound structures will open up to mechanistic drug studies to select compounds able to improve the prognosis of ovarian cancer patients.
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Affiliation(s)
- F Ricci
- IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, Via Giuseppe La Masa 19, 20156 Milan, Italy
| | - L Carrassa
- IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, Via Giuseppe La Masa 19, 20156 Milan, Italy
| | - M S Christodoulou
- Dipartimento di Chimica - Universita degli Studi di Milano - Via C. Golgi 19, 20133 Milan, Italy
| | - D Passarella
- Dipartimento di Chimica - Universita degli Studi di Milano - Via C. Golgi 19, 20133 Milan, Italy
| | - B Michel
- Universite Cote d'Azur, CNRS, Institut de Chimie de Nice UMR 7272, 06108 Nice, France
| | - R Benhida
- Universite Cote d'Azur, CNRS, Institut de Chimie de Nice UMR 7272, 06108 Nice, France
| | - N Martinet
- Universite Cote d'Azur, CNRS, Institut de Chimie de Nice UMR 7272, 06108 Nice, France
| | - A Hunyadi
- Institute of Pharmacognosy, University of Szeged, Eotvos str. 6, 6720 Szeged, Hungary and Interdisciplinary Centre for Natural Products, University of Szeged, Eotvos str. 6, 6720 Szeged, Hungary
| | - E Ioannou
- Department of Pharmacy, Section of Pharmacognosy and Chemistry of Natural Products, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece
| | - V Roussis
- Department of Pharmacy, Section of Pharmacognosy and Chemistry of Natural Products, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece
| | - L Musso
- Department of Food, Environmental and Nutritional Sciences, Universita degli Studi di Milano,Via Celoria 2, 20133 Milan, Italy
| | - S Dallavalle
- Department of Food, Environmental and Nutritional Sciences, Universita degli Studi di Milano,Via Celoria 2, 20133 Milan, Italy
| | - R Silvestri
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza University of Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - N Westwood
- School of Chemistry and Biomedical Sciences ResearchComplex, University of St Andrews and EaStCHEM, St Andrews KY16, United Kingdom
| | - M Mori
- Center for Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, viale Regina Elena 291, 00161 Rome, Italy
| | - C Ingallina
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza University of Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - B Botta
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza University of Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - E Kavetsou
- Department of Chemical Sciences, School of Chemical Engineering, National Technical University of Athens Iroon Politechniou 9, Zografou Campus, 15780 Athens, Greece
| | - A Detsi
- Department of Chemical Sciences, School of Chemical Engineering, National Technical University of Athens Iroon Politechniou 9, Zografou Campus, 15780 Athens, Greece
| | - Z Majer
- Department of Organic Chemistry, Eotvos Lorand University, H-1117 Budapest, Hungary
| | - F Hudecz
- Department of Organic Chemistry, Eotvos Lorand University, H-1117 Budapest, Hungary
| | - S Bosze
- Research Group of Peptide Chemistry, Hungarian Academy of Sciences, Eotvos Lorand University, H-1117 Budapest, Hungary
| | - B Kaminska
- Nencki Institute of Experimental Biology of Polish Acdemy of Sciences, Laboratory of Molecular Neurobiology, Neurobiology Center, 02-093 Warsaw, Pasteur 3 str, Poland
| | - T V Hansen
- School of Pharmacy, Department of Pharmaceutical Chemistry, University of Oslo, N-0316 Oslo, Norway
| | - P Bertrand
- Institut de Chimie des Milieux et Materiaux de Poitiers, UMR CNRS 7285, 86000, Poitiers, France
| | | | - G Damia
- IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, Via Giuseppe La Masa 19, 20156 Milan, Italy
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21
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Aiello D, Siciliano C, Mazzotti F, Di Donna L, Athanassopoulos CM, Napoli A. Molecular species fingerprinting and quantitative analysis of saffron ( Crocus sativus L.) for quality control by MALDI mass spectrometry. RSC Adv 2018; 8:36104-36113. [PMID: 35558493 PMCID: PMC9088749 DOI: 10.1039/c8ra07484d] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 10/17/2018] [Indexed: 12/15/2022] Open
Abstract
Herein we describe a rapid, simple, and reliable method for the quantitative analysis and molecular species fingerprinting of saffron (Crocus sativus L.) by direct MS and MS/MS analysis. Experimentally, powdered saffron was subjected to a brief treatment with a 0.3% TFA water/acetonitrile solution, and the resulting mixture was directly placed on the MALDI plate for analysis. This approach allowed the detection of the commonly observed crocins C-1-C-6 and flavonols, together with the identification of the unknown highly glycosylated crocins C-7, C-8 and C-9, and carotenoid-derived metabolites. The strategy endorsed the simultaneous detection and characterization of saffron and adulterant markers using crude extracts of the adulterant itself and synthetic sets of adulterated authentic saffron samples. The implementation of the strategy was to measure the amount of an unknown adulterant from the crude extract using curcumin as a non-isotopic isobaric internal standard. The relationship between the saffron and curcumin molar ratios were established with a correlation coefficient of 0.9942. The ANOVA regression model was significant, F(1, 72) = 13 595.82, p < 0.001, y = (0.0116 ± 0.0001)x + (-0.1214 ± 0.0086). No matrix effects were observed and good results were obtained with respect to instrumental repeatability (*RSD% < 2%) and LOD (1.1%). The analysis of commercial samples of saffron using the proposed approach showed the suitability of the method for routine analysis (minimal sample preparation and very short measuring time per sample).
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Affiliation(s)
- Donatella Aiello
- Department of Chemistry and Chemical Technologies, University of Calabria Italy
| | - Carlo Siciliano
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria Italy
| | - Fabio Mazzotti
- Department of Chemistry and Chemical Technologies, University of Calabria Italy
| | - Leonardo Di Donna
- Department of Chemistry and Chemical Technologies, University of Calabria Italy
| | | | - Anna Napoli
- Department of Chemistry and Chemical Technologies, University of Calabria Italy
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22
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Magoulas GE, Tsigkou T, Skondra L, Lamprou M, Tsoukala P, Kokkinogouli V, Pantazaka E, Papaioannou D, Athanassopoulos CM, Papadimitriou E. Synthesis of nοvel artemisinin dimers with polyamine linkers and evaluation of their potential as anticancer agents. Bioorg Med Chem 2017; 25:3756-3767. [DOI: 10.1016/j.bmc.2017.05.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 04/25/2017] [Accepted: 05/08/2017] [Indexed: 12/13/2022]
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23
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Dinos GP, Athanassopoulos CM, Missiri DA, Giannopoulou PC, Vlachogiannis IA, Papadopoulos GE, Papaioannou D, Kalpaxis DL. Chloramphenicol Derivatives as Antibacterial and Anticancer Agents: Historic Problems and Current Solutions. Antibiotics (Basel) 2016; 5:antibiotics5020020. [PMID: 27271676 PMCID: PMC4929435 DOI: 10.3390/antibiotics5020020] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 05/17/2016] [Accepted: 05/24/2016] [Indexed: 12/19/2022] Open
Abstract
Chloramphenicol (CAM) is the D-threo isomer of a small molecule, consisting of a p-nitrobenzene ring connected to a dichloroacetyl tail through a 2-amino-1,3-propanediol moiety. CAM displays a broad-spectrum bacteriostatic activity by specifically inhibiting the bacterial protein synthesis. In certain but important cases, it also exhibits bactericidal activity, namely against the three most common causes of meningitis, Haemophilus influenzae, Streptococcus pneumoniae and Neisseria meningitidis. Resistance to CAM has been frequently reported and ascribed to a variety of mechanisms. However, the most important concerns that limit its clinical utility relate to side effects such as neurotoxicity and hematologic disorders. In this review, we present previous and current efforts to synthesize CAM derivatives with improved pharmacological properties. In addition, we highlight potentially broader roles of these derivatives in investigating the plasticity of the ribosomal catalytic center, the main target of CAM.
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Affiliation(s)
- George P Dinos
- Department of Biochemistry, School of Medicine, University of Patras, GR-26504 Patras, Greece.
| | | | - Dionissia A Missiri
- Laboratory of Synthetic Organic Chemistry, Department of Chemistry, University of Patras, GR-26504 Patras, Greece.
| | | | - Ioannis A Vlachogiannis
- Department of Biochemistry, School of Medicine, University of Patras, GR-26504 Patras, Greece.
| | - Georgios E Papadopoulos
- Department of Biochemistry and Biotechnology, University of Thessaly, Ploutonos 26, GR-41221 Larissa, Greece.
| | - Dionissios Papaioannou
- Laboratory of Synthetic Organic Chemistry, Department of Chemistry, University of Patras, GR-26504 Patras, Greece.
| | - Dimitrios L Kalpaxis
- Department of Biochemistry, School of Medicine, University of Patras, GR-26504 Patras, Greece.
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24
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Antoniou AI, Pepe DA, Aiello D, Siciliano C, Athanassopoulos CM. Chemoselective Protection of Glutathione in the Preparation of Bioconjugates: The Case of Trypanothione Disulfide. J Org Chem 2016; 81:4353-8. [DOI: 10.1021/acs.joc.6b00300] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Antonia I. Antoniou
- Synthetic
Organic Chemistry Laboratory, Department of Chemistry, University of Patras, GR-26504 Patras, Greece
| | - Dionissia A. Pepe
- Synthetic
Organic Chemistry Laboratory, Department of Chemistry, University of Patras, GR-26504 Patras, Greece
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25
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Stoica S, Magoulas GE, Antoniou AI, Suleiman S, Cassar A, Gatt L, Papaioannou D, Athanassopoulos CM, Schembri-Wismayer P. Synthesis of minoxidil conjugates and their evaluation as HL-60 differentiation agents. Bioorg Med Chem Lett 2016; 26:1145-50. [PMID: 26832215 DOI: 10.1016/j.bmcl.2016.01.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 01/15/2016] [Accepted: 01/18/2016] [Indexed: 01/28/2023]
Abstract
Activation of minoxidil (MNX) with N,N'-carbonyldiimidazole and coupling with natural polyamines (PAs) and commercially available aliphatic or aromatic amines provided a series of new conjugates which were evaluated for their ability to induce differentiation to HL-60 acute myeloid leukemia cancer cells, using a modified NBTZ reduction test. Although neither MNX nor 4,4'-methylenedianiline (MDA) or 2,7-diaminofluorene (DAF), alone or in combination, had any effect, the MNX-spermine (SPM) conjugate (11) and the conjugates 7 and 8 of MNX with MDA and DAF exhibited a differentiation-inducing effect at a concentration of 10 μM without being toxic on proliferating human peripheral blood mononuclear cells.
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Affiliation(s)
- Sonia Stoica
- Anatomy Department, Faculty of Medicine and Surgery, University of Malta, Malta
| | - George E Magoulas
- Laboratory of Synthetic Organic Chemistry, Department of Chemistry, University of Patras, GR-26504 Patras, Greece
| | - Antonia I Antoniou
- Laboratory of Synthetic Organic Chemistry, Department of Chemistry, University of Patras, GR-26504 Patras, Greece
| | - Sherif Suleiman
- Anatomy Department, Faculty of Medicine and Surgery, University of Malta, Malta
| | - Analisse Cassar
- Anatomy Department, Faculty of Medicine and Surgery, University of Malta, Malta
| | - Lucienne Gatt
- Anatomy Department, Faculty of Medicine and Surgery, University of Malta, Malta
| | - Dionissios Papaioannou
- Laboratory of Synthetic Organic Chemistry, Department of Chemistry, University of Patras, GR-26504 Patras, Greece
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26
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Bariamis SE, Magoulas GE, Grafanaki K, Pontiki E, Tsegenidis T, Athanassopoulos CM, Maroulis G, Papaioannou D, Hadjipavlou-Litina D. Synthesis and biological evaluation of new C-10 substituted dithranol pleiotropic hybrids. Bioorg Med Chem 2015; 23:7251-63. [PMID: 26515039 DOI: 10.1016/j.bmc.2015.10.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 10/06/2015] [Accepted: 10/15/2015] [Indexed: 11/26/2022]
Abstract
Selective alkylation of the antipsoriatic drug dithranol (DTR) at C-10 with tert-butyl bromoacetate, followed by acid-mediated deprotection, produced the corresponding carboxylic acid 4 which was coupled with selectively protected polyamines (PAs), such as putrescine (PUT), spermidine (SPD) and spermine (SPM), dopamine and aliphatic amines and substituted benzylamines producing a series of DTR-PA hybrids, after acid-mediated deprotection, as well as simple amides. The compounds were tested as antioxidants and inhibitors of lipoxygenase (LOX). The amides 4,4'-dimethoxybenzhydrylamide 13 (86% and 95%), 2,4-dimethoxybenzylamide 12 (87% and 81%) and dodecylamide 9 (98% and 74%), and the hybrid DTR-SPM (7) (93% and 87%), showed the highest antioxidant activity in the DPPH and AAPH assays, whereas the most potent inhibitors of LOX were amide 13 (IC50=7 μM), the benzylamide 10 (IC50=7.9 μM) and the butylamide 8 (IC50=10 μM). Molecular binding studies showed that binding of these derivatives into the hydrophobic domain blocks approach of substrate to the active site, inhibiting soybean LOX. Amide 13 presented the highest anti-inflammatory activity (79.7%). The DTR moiety was absolutely necessary for securing high anti-inflammatory potency. Ethyl ester 3 (IC50=0.357 μM) and the amides 9 (IC50=0.022 μM) and 13 (IC50=0.56 μM) exhibited higher antiproliferative activity than DTR (IC50=0.945 μM) on HaCaT keratinocytes whereas amide 13 generally presented better cytocompatibility. Amide 13 is a very promising lead compound for further development as an anti-inflammatory and antiproliferative agent.
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Affiliation(s)
- Stavros E Bariamis
- Department of Chemistry, School of Natural Sciences, University of Patras, 26504 Patras, Greece
| | - George E Magoulas
- Department of Chemistry, School of Natural Sciences, University of Patras, 26504 Patras, Greece
| | - Katerina Grafanaki
- Laboratory of Biochemistry, Department of Medicine, School of Health Sciences, University of Patras, 26504 Patras, Greece
| | - Eleni Pontiki
- Department of Pharmaceutical Chemistry, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Theodore Tsegenidis
- Department of Chemistry, School of Natural Sciences, University of Patras, 26504 Patras, Greece
| | | | - George Maroulis
- Department of Chemistry, School of Natural Sciences, University of Patras, 26504 Patras, Greece
| | - Dionissios Papaioannou
- Department of Chemistry, School of Natural Sciences, University of Patras, 26504 Patras, Greece.
| | - Dimitra Hadjipavlou-Litina
- Department of Pharmaceutical Chemistry, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
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27
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Magoulas GE, Kostopoulou ON, Garnelis T, Athanassopoulos CM, Kournoutou GG, Leotsinidis M, Dinos GP, Papaioannou D, Kalpaxis DL. Synthesis and antimicrobial activity of chloramphenicol-polyamine conjugates. Bioorg Med Chem 2015; 23:3163-74. [PMID: 26001343 DOI: 10.1016/j.bmc.2015.04.069] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 04/23/2015] [Accepted: 04/24/2015] [Indexed: 10/23/2022]
Abstract
A series of chloramphenicol (CAM) amides with polyamines (PAs), suitable for structure-activity relationship studies, were synthesized either by direct attachment of the PA chain on the 2-aminopropane-1,3-diol backbone of CAM, previously oxidized selectively at its primary hydroxyl group, or from chloramphenicol base (CLB) through acylation with succinic or phthalic anhydride and finally coupling with a PA. Conjugates 4 and 5, in which the CLB moiety was attached on N4 and N1 positions, respectively, of the N(8),N(8)-dibenzylated spermidine through the succinate linker, were the most potent antibacterial agents. Both conjugates were internalized into Escherichia coli cells by using the spermidine-preferential uptake system and caused decrease in protein and polyamine content of the cells. Noteworthy, conjugate 4 displayed comparable activity to CAM in MRSA or wild-type strains of Staphylococcus aureus and Escherichia coli, but superior activity in E. coli strains possessing ribosomal mutations or expressing the CAM acetyltransferase (cat) gene. Lead compounds, and in particular conjugate 4, have been therefore discovered during the course of the present work with clinical potential.
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Affiliation(s)
- George E Magoulas
- Laboratory of Synthetic Organic Chemistry, Department of Chemistry, University of Patras, GR-26504 Patras, Greece
| | - Ourania N Kostopoulou
- Department of Biochemistry, School of Medicine, University of Patras, GR-26504 Patras, Greece
| | - Thomas Garnelis
- Laboratory of Synthetic Organic Chemistry, Department of Chemistry, University of Patras, GR-26504 Patras, Greece
| | | | - Georgia G Kournoutou
- Department of Biochemistry, School of Medicine, University of Patras, GR-26504 Patras, Greece
| | - Michael Leotsinidis
- Department of Public Health, School of Medicine, University of Patras, GR-26504 Patras, Greece
| | - George P Dinos
- Department of Biochemistry, School of Medicine, University of Patras, GR-26504 Patras, Greece
| | - Dionissios Papaioannou
- Laboratory of Synthetic Organic Chemistry, Department of Chemistry, University of Patras, GR-26504 Patras, Greece.
| | - Dimitrios L Kalpaxis
- Department of Biochemistry, School of Medicine, University of Patras, GR-26504 Patras, Greece.
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28
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Mazzotti F, Di Donna L, Napoli A, Aiello D, Siciliano C, Athanassopoulos CM, Sindona G. N-hydroxysuccinimidyl p-methoxybenzoate as suitable derivative reagent for isotopic dilution assay of biogenic amines in food. J Mass Spectrom 2014; 49:802-810. [PMID: 25230176 DOI: 10.1002/jms.3417] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 03/06/2014] [Accepted: 06/19/2014] [Indexed: 06/03/2023]
Abstract
We present a simple methodology for the simultaneous identification and determination of biogenic amines in food matrices, based on the use of a stable isotope-coded derivatization and liquid chromatography tandem mass spectrometry. The tagging reagent is N-hydroxysuccinimidyl ester of d(0)/d(4) -4-methoxybenzoic acid (d(0)/d(4) -4-MBA-OSu) which mainly functionalizes primary amines. The identification and structural characterization of tagged biogenic amines were exploited by matrix-assisted laser desorption/ionization-mass spectrometry (MS) and MS/MS. Multiple-reaction monitoring has been applied in the assay of biogenic amines in different foodstuffs, providing a method whose reliability is confirmed by the values of accuracy (12%) and by the calculated analytical parameters.
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Affiliation(s)
- Fabio Mazzotti
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Via P. Bucci Cubo 12/C, I-87036, Arcavacata di Rende, Cosenza, Italy
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29
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Hadjipavlou-Litina D, Magoulas GE, Bariamis SE, Tsimali Z, Avgoustakis K, Kontogiorgis CA, Athanassopoulos CM, Papaioannou D. Synthesis and evaluation of the antioxidative potential of minoxidil–polyamine conjugates. Biochimie 2013; 95:1437-49. [DOI: 10.1016/j.biochi.2013.03.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Accepted: 03/19/2013] [Indexed: 01/06/2023]
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30
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Bariamis SE, Marin M, Athanassopoulos CM, Kontogiorgis C, Tsimali Z, Papaioannou D, Sindona G, Romeo G, Avgoustakis K, Hadjipavlou-Litina D. Syntheses and evaluation of the antioxidant activity of novel methoxypsoralen derivatives. Eur J Med Chem 2013; 60:155-69. [PMID: 23291118 DOI: 10.1016/j.ejmech.2012.11.043] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Revised: 11/28/2012] [Accepted: 11/29/2012] [Indexed: 10/27/2022]
Abstract
A series of 5- and 8-methoxypsoralen (MOP) analogs, suitable for structure-antioxidative/anti-inflammatory activity relationship studies, were synthesized using as key-reactions the selective monobromination of MOPs with N-bromosaccharin and either a Heck reaction or a Suzuki coupling or a Suzuki coupling followed by a Wittig reaction to install side-chains of the acrylate- or benzoate- or cinnamate-type, respectively. The 8-MOP analogs 19 and 24, incorporating at position 5 of the psoralen nucleus a butyl acrylate or a tert-butyl cinnamate moiety, were the most powerful inhibitors of soybean LOX and inhibited effectively lipid peroxidation. Analog 19 was a more potent anti-inflammatory agent than the reference compound indomethacin and of comparable cytocompatibility to 8-MOP whereas analog 24 was a weaker inhibitor of inflammation than indomethacin and significantly more cytotoxic than 8-MOP. The results of the biological tests are discussed in terms of structural characteristics.
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Affiliation(s)
- Stavros E Bariamis
- Laboratory of Synthetic Organic Chemistry, Department of Chemistry, School of Natural Sciences, University of Patras, 26504 Patras, Greece
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31
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Vourtsis D, Lamprou M, Sadikoglou E, Giannou A, Theodorakopoulou O, Sarrou E, Magoulas GE, Bariamis SE, Athanassopoulos CM, Drainas D, Papaioannou D, Papadimitriou E. Effect of an all-trans-retinoic acid conjugate with spermine on viability of human prostate cancer and endothelial cells in vitro and angiogenesis in vivo. Eur J Pharmacol 2013. [DOI: 10.1016/j.ejphar.2012.11.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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32
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Magoulas GE, Garnelis T, Athanassopoulos CM, Papaioannou D, Mattheolabakis G, Avgoustakis K, Hadjipavlou-Litina D. Synthesis and antioxidative/anti-inflammatory activity of novel fullerene–polyamine conjugates. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.06.066] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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33
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Mazzotti F, Benabdelkamel H, Di Donna L, Athanassopoulos CM, Napoli A, Sindona G. Light and heavy dansyl reporter groups in food chemistry: amino acid assay in beverages. J Mass Spectrom 2012; 47:932-939. [PMID: 22791261 DOI: 10.1002/jms.3005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
5-Dimethylamino-1-sulfonyl naphthalene (DNS, commonly referred as dansyl) is a functionality, bearing well-established properties in directing the fragmentation, by mass spectrometry (MS), of the corresponding ionized sulfonylated derivatives. This property is shared also by its labeled analogs. The use of d(0)/d(6) DNS derivatives is now exploited in the application of the well-established isotope dilution mass spectrometric approach in the assay of complex mixtures. A new method for the quantitation of amino acids (AAs) in beverages is therefore presented, which relies on liquid chromatographic separation of their N-dansylated derivatives followed by comparative electrospray tandem MS/MS of the d(0)/d(6) isobaric mixtures. Labeled and unlabeled DNS derivatives of the selected AAs are readily available by microwave-assisted synthetic protocols. The novelty of the method is represented by the use of heavy and light DNS-isotopologue providing suitable reporter groups. Multiple-reaction monitoring has been applied in the assay of AAs in wine, pineapple juice and bergamot juice with good-to-excellent results as proved by both relative standard deviation, lower than 15%, and by the accuracy values in the range 90-110%.
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Affiliation(s)
- Fabio Mazzotti
- Dipartimento di Chimica, Università della Calabria, Via P. Bucci Cubo 12/C, I-87036, Arcavacata di Rende, Cosenza, Italy
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34
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Magoulas GE, Bariamis SE, Athanassopoulos CM, Haskopoulos A, Dedes PG, Krokidis MG, Karamanos NK, Kletsas D, Papaioannou D, Maroulis G. Syntheses, antiproliferative activity and theoretical characterization of acitretin-type retinoids with changes in the lipophilic part. Eur J Med Chem 2010; 46:721-37. [PMID: 21208698 DOI: 10.1016/j.ejmech.2010.12.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2010] [Revised: 11/22/2010] [Accepted: 12/07/2010] [Indexed: 11/19/2022]
Abstract
Acitretin analogs, incorporating changes in the lipophilic part, were efficiently synthesized from commercially available aromatic aldehydes or methyl ketones using the Wittig or Horner-Wadsworth-Emmons reaction. Their antiproliferative activity was evaluated against human breast MCF-7 epithelial cells. Analogs 3, 4, 8 and 11 exhibited strong, dose-dependent, antiproliferative activity on the tested cell line. Analog 3, incorporating three methoxy groups in the aromatic ring, exhibited the strongest inhibitory effect at 10 μM. High-level all electron conventional ab initio and density functional theory quantum chemical calculations were performed to obtain the molecular structure, electron charge distribution and polarization properties of all compounds of interest in this work. The most active analogs were planar and were characterized by larger dipole moments than the other synthesized molecules. Another factor of importance to the analysis of the activity of these molecules is the dipole polarizability.
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Affiliation(s)
- George E Magoulas
- Laboratory of Synthetic Organic Chemistry, Department of Chemistry, University of Patras, GR-265 04 Patras, Greece
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35
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Napoli A, Athanassopoulos CM, Moschidis P, Aiello D, Di Donna L, Mazzotti F, Sindona G. Solid phase isobaric mass tag reagent for simultaneous protein identification and assay. Anal Chem 2010; 82:5552-60. [PMID: 20527734 DOI: 10.1021/ac1004212] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The solid phase isobaric mass tagging (SPIMT) approach is presented for simultaneous protein quantitation and identification. The novelty of the SPIMT strategy relies on a CID-based differentiation of regioisomeric species for quantitation of tagged proteolytic peptides. SPIMTs are unlabeled mass-tagging reagents, which consist of a reporter group, a mass balance group, and a spacer with a amine-specific reactive group, able to be linked to any N-terminal peptide. Therefore SPIMT-linked peptides from a two-plex set appear as a single unresolved precursor ion in MS, whereas the reporter groups lead to quantitation signals of m/z 168.2 and 182.2 Da upon tandem mass spectrometry (MS/MS) analysis with matrix-assisted laser desorption time-of-flight/time-of-flight (MALDI TOF/TOF). This strategy allows ease protein identification by direct submission of MS and MS/MS data to the MASCOT database. SPIMT approach showed an excellent quantitation linearity, detecting any relative concentration differences of peptides in two solutions over a 5-fold concentration range without losing sequencing information. Therefore, SPIMTs are an attractive, simple, and low cost alternative for two-plex quantitation of proteins and offer possibilities of tuning the two-plex signal mass window by replacing the spacer.
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Affiliation(s)
- Anna Napoli
- Dipartimento di Chimica, Università della Calabria, Arcavacata di Rende, Italy.
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Hadjipavlou-Litina D, E Bariamis S, Militsopoulou M, Athanassopoulos CM, Papaioannou D. Trioxsalen derivatives with lipoxygenase inhibitory activity. J Enzyme Inhib Med Chem 2009; 24:1351-6. [PMID: 19912068 DOI: 10.3109/14756360902932776] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Trioxsalen (TRX) is a 4,5',8-trimethylated psoralen analog presenting interesting biological activities when irradiated with UVA light. A series of TRX derivatives, which where obtained by its chemical modification and incorporation of a variety of unsaturated functions at position 4' of the psoralen ring-system, were evaluated for their antioxidant activity and their inhibitory activity on soybean lipoxygenase (LOX) and lipid peroxidation. The reducing properties of the compounds were evaluated using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging assay and found to be very low, in the range 0-14%, with the exception of the hydroxamic acid 6 which showed almost identical activity to BHT. TRX derivative 3 significantly inhibited LOX, with IC(50) 9.4 muM. With the exception of TRX, all tested analogs inhibited lipid peroxidation in the range of 35-91%. The most potent compound, namely TRX derivative 3, was studied for its anti-inflammatory activity in vivo on rat paw edema induced by carrageenan, and was found to be of almost identical activity to indomethacin. The results of the biological tests are discussed in terms of structural characteristics.
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Affiliation(s)
- D Hadjipavlou-Litina
- Department of Pharmaceutical Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece.
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Bariamis SE, Magoulas GE, Athanassopoulos CM, Papaioannou D, Manos MJ, Nastopoulos V. (2E,4E,6E)-3-Methyl-7-(pyren-1-yl)octa-2,4,6-trienoic acid. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o2580. [PMID: 21578017 PMCID: PMC2970380 DOI: 10.1107/s1600536809038409] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2009] [Accepted: 09/22/2009] [Indexed: 11/10/2022]
Abstract
The title compound, C(25)H(20)O(2), was synthesized by a Wittig reaction between triphen-yl[1-(pyren-1-yl)eth-yl]phospho-nium bromide and ethyl (2E,4E)-3-methyl-6-oxohexa-2,4-dienoate, in the presence of n-butyl lithium, followed by saponification. It was obtained pure in the all-trans configuration following crystallization from ethyl acetate. The asymmetric unit contains two independent mol-ecules (A and B), which are arranged almost parallel to each other within the crystal structure. The triene chain is not coplanar with the pyrene ring system, forming dihedral angles of 52.8 (1) and 42.2 (1)° for mol-ecules A and B, respectively. Inter-molecular hydrogen bonds between the carboxyl groups of the mol-ecules link them into centrosymmetric pairs, AA and BB, each with the R(2) (2)(8) graph-set motif.
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Hadjipavlou-Litina D, Garnelis T, Athanassopoulos CM, Papaioannou D. Kukoamine A analogs with lipoxygenase inhibitory activity. J Enzyme Inhib Med Chem 2009; 24:1188-93. [DOI: 10.1080/14756360902779193] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Sadikoglou E, Magoulas G, Theodoropoulou C, Athanassopoulos CM, Giannopoulou E, Theodorakopoulou O, Drainas D, Papaioannou D, Papadimitriou E. Effect of conjugates of all-trans-retinoic acid and shorter polyene chain analogues with amino acids on prostate cancer cell growth. Eur J Med Chem 2009; 44:3175-87. [PMID: 19375825 DOI: 10.1016/j.ejmech.2009.03.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2009] [Revised: 03/12/2009] [Accepted: 03/16/2009] [Indexed: 11/29/2022]
Abstract
In the present work, a series of conjugates of amino acids with all-trans-retinoic acid (ATRA) and shorter polyene chain analogues were rationally designed, synthesized by coupling the succinimidyl active esters of the acidic retinoids with appropriately protected amino acids or peptides followed by deprotection, and examined for their possible effect on viability of human prostate cancer LNCaP cells. In contrast to ATRA, all conjugates bearing amino acids with polar side chains showed no inhibitory effect on LNCaP cell proliferation, while conjugates with alpha-amino acids with lipophilic side chain, such as 7, or linear amino acids, such as 9, significantly decreased prostate cancer LNCaP cell number. Interestingly, while the effect of ATRA was RARalpha-dependent, the effect of its active analogues was not inhibited by a selective RARalpha antagonist. Cell cycle analysis showed no effect on cell cycle, while quantitative analysis by annexin V-propidium iodide staining revealed that neither ATRA nor its analogues affected LNCaP cell apoptosis or necrosis. These results demonstrate that compounds 7 and 9 are potentially useful agents that warrant further preclinical development for treatment of prostate cancer.
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Affiliation(s)
- Eldem Sadikoglou
- Department of Pharmacy, Laboratory of Molecular Pharmacology, School of Health Sciences, University of Patras, University Campus, Patras, Greece
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Athanassopoulos CM, Garnelis T, Vahliotis D, Papaioannou D. Efficient syntheses of 5-aminoalkyl-1h-tetrazoles and of polyamines incorporating tetrazole rings. Org Lett 2006; 7:561-4. [PMID: 15704894 DOI: 10.1021/ol0477069] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Linear N(omega)-tritylated omega-amino thiobenzylamides and N(alpha),N(omega)-ditritylated polyamino mono- or bisthioamides were efficiently converted to the corresponding tetrazole derivatives upon treatment with azidotrimethylsilane under Mitsunobu reaction conditions. [reaction: see text]
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Garnelis T, Athanassopoulos CM, Papaioannou D, Eggleston IM, Fairlamb AH. Very Short and Efficient Syntheses of the Spermine Alkaloid Kukoamine A and Analogs Using Isolable Succinimidyl Cinnamates. CHEM LETT 2005. [DOI: 10.1246/cl.2005.264] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Athanassopoulos CM, Garnelis T, Pantazaka E, Papaioannou D. Efficient guanylation of Nα,Nω-difunctionalized polyamines at the secondary amino functions. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.10.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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