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Tvrdoňová M, Borovská B, Salayová A, Rončák R, Michalčin P, Bednáriková Z, Gažová Z. Design and synthesis of novel carbohydrate-amino acid hybrids and their antioxidant and anti-β-amyloid aggregation activity. Bioorg Chem 2023; 137:106636. [PMID: 37290376 DOI: 10.1016/j.bioorg.2023.106636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 05/19/2023] [Accepted: 05/23/2023] [Indexed: 06/10/2023]
Abstract
Herein we report the synthesis of new furanoid sugar amino acids and thioureas, prepared by coupling aromatic amino acids and dipeptides with isothiocyanato- functionalized ribofuranose ring. Since carbohydrate-derived structures possess many biological activities, synthesized compounds were evaluated as anti-amyloid and antioxidant agents. The anti-amyloid activity of the studied compounds was evaluated based on their potential to destroy amyloid fibrils of intrinsically disordered Aβ40 peptide and globular hen egg-white (HEW) lysozyme. The destructive efficiency of the compounds differed between the studied peptides. While the destruction activity of the compounds on the HEW lysozyme amyloid fibrils was negligible, the effect on Aβ40 amyloid fibrils was significantly higher. Furanoid sugar α-amino acid 1 and its dipeptide derivatives 8 (Trp-Trp) and 11 (Trp-Tyr) were the most potent anti-Aβ fibrils compounds. The antioxidant properties of synthesized compounds were estimated by three complementary in vitro assays (DPPH, ABTS, and FRAP). The ABTS assay was the most sensitive for assessing the radical scavenging activity of all tested compounds compared to the DPPH test. Significant antioxidant activity was detected for compounds in the group of aromatic amino acids depending on the present amino acid, with the highest activity in the case of dipeptides 11 and 12 containing the Tyr and Trp moiety. Regarding the FRAP assay, the best reducing antioxidant potential revealed Trp-containing compounds 5, 10, and 12.
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Affiliation(s)
- Monika Tvrdoňová
- Department of Organic Chemistry, Institute of Chemical Sciences, P.J. Šafárik University, Moyzesova 11, 040 01 Košice, Slovakia.
| | - Barbora Borovská
- Department of Biophysics, Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia
| | - Aneta Salayová
- Department of Chemistry, Biochemistry and Biophysics, University of Veterinary Medicine and Pharmacy in Košice, Komenského 73, 041 81 Košice, Slovakia
| | - Róbert Rončák
- Department of Organic Chemistry, Institute of Chemical Sciences, P.J. Šafárik University, Moyzesova 11, 040 01 Košice, Slovakia
| | - Peter Michalčin
- Department of Organic Chemistry, Institute of Chemical Sciences, P.J. Šafárik University, Moyzesova 11, 040 01 Košice, Slovakia
| | - Zuzana Bednáriková
- Department of Biophysics, Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia
| | - Zuzana Gažová
- Department of Biophysics, Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia
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2
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de la Fuente MC, Ageitos L, Lages MA, Martínez-Matamoros D, Forero AM, Balado M, Lemos ML, Rodríguez J, Jiménez C. Structural Requirements for Ga 3+ Coordination in Synthetic Analogues of the Siderophore Piscibactin Deduced by Chemical Synthesis and Density Functional Theory Calculations. Inorg Chem 2023; 62:7503-7514. [PMID: 37140938 DOI: 10.1021/acs.inorgchem.3c00787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Stereoselective total synthesis of several analogues of piscibactin (Pcb), the siderophore produced by different pathogenic Gram-negative bacteria, was performed. The acid-sensitive α-methylthiazoline moiety was replaced by a more stable thiazole ring, differing in the configuration of the OH group at the C-13 position. The ability of these Pcb analogues to form complexes with Ga3+ as a mimic of Fe3+ showed that the configuration of the hydroxyl group at C-13 as 13S is crucial for the chelation of Ga3+ to preserve the metal coordination, while the presence of a thiazole ring instead of the α-methylthiazoline moiety does not affect such coordination. A complete 1H and 13C NMR chemical shift assignment of the diastereoisomer mixtures around C9/C10 was done for diagnostic stereochemical disposition. Additionally, density functional theory calculations were performed not only for confirming the stereochemistry of the Ga3+ complex among the six possible diastereoisomers but also for deducing the ability of these to form octahedral coordination spheres with gallium. Finally, the lack of antimicrobial activity of Pcb and Pcb thiazole analogue Ga3+ complexes against Vibrio anguillarum agrees with one of the roles of siderophores in protecting pathogens from metal ion toxicity. The efficient metal coordination shown by this scaffold suggests its possible use as a starting point for the design of new chelating agents or vectors for the development of new antibacterials that exploit the "Trojan horse" strategy using the microbial iron uptake mechanisms. The results obtained will be of great help in the development of biotechnological applications for these types of compounds.
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Affiliation(s)
- M Carmen de la Fuente
- CICA─Centro Interdisciplinar de Química e Bioloxía, Departamento de Química, Facultade de Ciencias, Universidade da Coruña, A Coruña 15071, Spain
| | - Lucía Ageitos
- CICA─Centro Interdisciplinar de Química e Bioloxía, Departamento de Química, Facultade de Ciencias, Universidade da Coruña, A Coruña 15071, Spain
| | - Marta A Lages
- Departamento de Microbiología y Parasitología, Instituto de Acuicultura, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - Diana Martínez-Matamoros
- CICA─Centro Interdisciplinar de Química e Bioloxía, Departamento de Química, Facultade de Ciencias, Universidade da Coruña, A Coruña 15071, Spain
| | - Abel M Forero
- CICA─Centro Interdisciplinar de Química e Bioloxía, Departamento de Química, Facultade de Ciencias, Universidade da Coruña, A Coruña 15071, Spain
| | - Miguel Balado
- Departamento de Microbiología y Parasitología, Instituto de Acuicultura, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - Manuel L Lemos
- Departamento de Microbiología y Parasitología, Instituto de Acuicultura, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - Jaime Rodríguez
- CICA─Centro Interdisciplinar de Química e Bioloxía, Departamento de Química, Facultade de Ciencias, Universidade da Coruña, A Coruña 15071, Spain
| | - Carlos Jiménez
- CICA─Centro Interdisciplinar de Química e Bioloxía, Departamento de Química, Facultade de Ciencias, Universidade da Coruña, A Coruña 15071, Spain
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3
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Boateng A, Amano M, Sugiura M. Synthesis of Selenoesters via Aldol Condensation and/or Conjugate Reduction and Their Antiviral Activities. ACS OMEGA 2023; 8:1369-1374. [PMID: 36643423 PMCID: PMC9835172 DOI: 10.1021/acsomega.2c06784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
A variety of unsaturated selenoesters (including phenolic ones) were produced in good to high yields and with high E/Z ratios using TiCl4-promoted aldol condensation between Se-phenyl selenoacetate and their respective aldehydes without aqueous workup. A representative phenolic unsaturated selenoester was applied to acylation of tyrosine methyl ester without protection of the phenolic hydroxy groups to furnish the corresponding amino acid conjugate. The conjugate reduction of the unsaturated selenoesters including phenolic ones and selenocoumarin with HSiEt3 was catalyzed by B(C6F5)3 to afford the corresponding saturated selenoesters in good to high yields. This method was also applicable to the reduction of a saturated selenoester to the corresponding O-silyl hemiselenoacetal in a high yield. Moreover, most acyclic unsaturated selenoesters were found to show good multiple antiviral activities against HIV-1, HBV, and SARS-CoV-2.
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Affiliation(s)
- Alex Boateng
- Graduate
School of Pharmaceutical Sciences, Sojo
University, 4-22-1 Ikeda, Nishi-ku, Kumamoto 860-0082, Japan
| | - Masayuki Amano
- Department
of Hematology, Rheumatology and Infectious Diseases, School of Medicine, Kumamoto University, Kumamoto 860-8556, Japan
- Department
of Clinical Retrovirology, Joint research Center for Human Retrovirus
Infection, Kumamoto University, Kumamoto 860-0811, Japan
| | - Masaharu Sugiura
- Graduate
School of Pharmaceutical Sciences, Sojo
University, 4-22-1 Ikeda, Nishi-ku, Kumamoto 860-0082, Japan
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4
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Rossi YE, Bohl LP, Vanden Braber NL, Ballatore MB, Escobar FM, Bodoira R, Maestri DM, Porporatto C, Cavaglieri LR, Montenegro MA. Polyphenols of peanut (Arachis hypogaea L.) skin as bioprotectors of normal cells. Studies of cytotoxicity, cytoprotection and interaction with ROS. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.103862] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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5
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Mondal J, Sarkar R, Sen P, Goswami RK. Total Synthesis and Stereochemical Assignment of Sunshinamide and Its Anticancer Activity. Org Lett 2020; 22:1188-1192. [DOI: 10.1021/acs.orglett.0c00070] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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Monteiro LS, Paiva-Martins F, Oliveira S, Machado I, Costa M. An efficient one-pot synthesis of polyphenolic amino acids and evaluation of their radical-scavenging activity. Bioorg Chem 2019; 89:102983. [PMID: 31102692 DOI: 10.1016/j.bioorg.2019.102983] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 04/11/2019] [Accepted: 05/10/2019] [Indexed: 12/24/2022]
Abstract
A simple and efficient procedure for the synthesis of N-acyl 4-hydroxy, 4-hydroxy-3-methoxy and 3,4-dihydroxy phenylglycine amides by a strategy based on the multicomponent Ugi reaction is proposed. Hydroxybenzaldehyde derivatives were reacted with 4-methoxybenzylamine, cyclohexyl isocyanide and benzoic acid or 2-naphthylacetic acid to give Ugi adducts that were treated with trifluoroacetic acid yielding N-acyl hydroxyphenylglycine amides in good yields. The same procedure using as acid component protocatechuic acid or hydrocaffeic acid gave N-catechoyl 3,4-dihydroxyphenylglycine amides. The use of N-benzyloxycarbonylglycine as acid component allowed the preparation of a 3,4-dihydroxyphenylglycyl dipeptide derivative. Radical-scavenging activity studies of the polyphenolic amino acid derivatives showed a sharp increase in activity with the increase in number of hydroxyl or catechol groups present. Cyclic voltammetry experiments established a correlation between oxidation peak potentials and the radical-scavenging activity.
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Affiliation(s)
- Luís S Monteiro
- Chemistry Centre, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
| | - Fátima Paiva-Martins
- REQUIMTE/LAQV, Department of Chemistry and Biochemistry, Faculty of Science, University of Porto, Rua do Campo Alegre 687, Porto, Portugal
| | - Sandra Oliveira
- Chemistry Centre, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; REQUIMTE/LAQV, Department of Chemistry and Biochemistry, Faculty of Science, University of Porto, Rua do Campo Alegre 687, Porto, Portugal
| | - Inês Machado
- Chemistry Centre, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Marlene Costa
- REQUIMTE/LAQV, Department of Chemistry and Biochemistry, Faculty of Science, University of Porto, Rua do Campo Alegre 687, Porto, Portugal
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7
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Alkaloids from Scindapsus officinalis (Roxb.) Schott. and their biological activities. Fitoterapia 2018; 129:54-61. [DOI: 10.1016/j.fitote.2018.06.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 06/06/2018] [Accepted: 06/08/2018] [Indexed: 11/20/2022]
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8
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Synthesis and preliminary biological evaluation of new phenolic and catecholic dehydroamino acid derivatives. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.09.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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9
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Fang Y, Gonuguntla S, Soh S. Universal Nature-Inspired Coatings for Preparing Noncharging Surfaces. ACS APPLIED MATERIALS & INTERFACES 2017; 9:32220-32226. [PMID: 28820577 DOI: 10.1021/acsami.7b07711] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Static charge generated by contact electrification on surfaces can lead to many undesirable consequences such as a reduction in the efficiency of manufacturing processes, damage to equipment, and explosions. However, it is extremely challenging to avoid contact electrification because it is ubiquitous: almost all types of materials charge on contact. Here, we coated materials with naturally occurring polydopamine (PDA) and tannic acid (TA) for preparing noncharging surfaces. Importantly, these coatings are very versatile and can be coated on a wide range of materials, including metals, inorganic materials, semiconductors, and polymers. Once coated, the amount of charge generated was found to reduce dramatically at different humidities. The reduction in charge may be due to the radical-scavenging property of PDA and TA. This simple general approach is ideal for coating the vast variety of materials that need to resist charging by contact electrification.
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Affiliation(s)
- Yan Fang
- Department of Chemical and Biomolecular Engineering, National University of Singapore , 4 Engineering Drive 4, Singapore 117585, Singapore
| | - Spandhana Gonuguntla
- Department of Chemical and Biomolecular Engineering, National University of Singapore , 4 Engineering Drive 4, Singapore 117585, Singapore
| | - Siowling Soh
- Department of Chemical and Biomolecular Engineering, National University of Singapore , 4 Engineering Drive 4, Singapore 117585, Singapore
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10
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Joko S, Watanabe M, Fuda H, Takeda S, Furukawa T, Hui SP, Shrestha R, Chiba H. Comparison of chemical structures and cytoprotection abilities between direct and indirect antioxidants. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.05.039] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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11
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Bino A, Baldisserotto A, Scalambra E, Dissette V, Vedaldi DE, Salvador A, Durini E, Manfredini S, Vertuani S. Design, synthesis and biological evaluation of novel hydroxy-phenyl-1H-benzimidazoles as radical scavengers and UV-protective agents. J Enzyme Inhib Med Chem 2017; 32:527-537. [PMID: 28114824 PMCID: PMC6010047 DOI: 10.1080/14756366.2016.1265523] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
An ever-increasing incidence of skin neoplastic diseases is registered. Therefore, it is important to protect the skin from the UV radiation that reaches the epidermis and dermis but also to block ROS generated by them. Our attention was attracted in developing new compounds provided with both UV filtering and antioxidant capacities. To this end, 2-phenyl-1H-benzimidazole-5-sulfonic acid (PBSA), a known UV filter, was selected as lead compound for its lack of antioxidant activity, high water solubility and good safety profile. PBSA was sequentially modified introducing hydroxyls on the phenyl ring and also substituting the functional group in position 5 of the benzimidazole ring. At the end of the synthetic study, a new, very potent class of antioxidants has been obtained. Surprisingly some of the developed molecules, while devoid of significant UV-filtering activity was endowed with potent UV-filtering booster capability if associated with known commercial UVB and UVA filters.
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Affiliation(s)
- Alessia Bino
- a Department of Life Sciences and Biotechnology, School of Pharmacy and Health Products , University of Ferrara, Master Course in Cosmetic Sciences and Technology, Laboratory of Health Products , Ferrara , Italy
| | - Anna Baldisserotto
- a Department of Life Sciences and Biotechnology, School of Pharmacy and Health Products , University of Ferrara, Master Course in Cosmetic Sciences and Technology, Laboratory of Health Products , Ferrara , Italy
| | - Emanuela Scalambra
- a Department of Life Sciences and Biotechnology, School of Pharmacy and Health Products , University of Ferrara, Master Course in Cosmetic Sciences and Technology, Laboratory of Health Products , Ferrara , Italy
| | - Valeria Dissette
- a Department of Life Sciences and Biotechnology, School of Pharmacy and Health Products , University of Ferrara, Master Course in Cosmetic Sciences and Technology, Laboratory of Health Products , Ferrara , Italy
| | - Daniela Ester Vedaldi
- b Department of Pharmaceutical and Pharmacological Sciences , University of Padua , Padua , Italy
| | - Alessia Salvador
- b Department of Pharmaceutical and Pharmacological Sciences , University of Padua , Padua , Italy
| | - Elisa Durini
- a Department of Life Sciences and Biotechnology, School of Pharmacy and Health Products , University of Ferrara, Master Course in Cosmetic Sciences and Technology, Laboratory of Health Products , Ferrara , Italy
| | - Stefano Manfredini
- a Department of Life Sciences and Biotechnology, School of Pharmacy and Health Products , University of Ferrara, Master Course in Cosmetic Sciences and Technology, Laboratory of Health Products , Ferrara , Italy
| | - Silvia Vertuani
- a Department of Life Sciences and Biotechnology, School of Pharmacy and Health Products , University of Ferrara, Master Course in Cosmetic Sciences and Technology, Laboratory of Health Products , Ferrara , Italy
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12
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Radice M, Manfredini S, Ziosi P, Dissette V, Buso P, Fallacara A, Vertuani S. Herbal extracts, lichens and biomolecules as natural photo-protection alternatives to synthetic UV filters. A systematic review. Fitoterapia 2016; 114:144-162. [PMID: 27642040 DOI: 10.1016/j.fitote.2016.09.003] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 09/12/2016] [Accepted: 09/14/2016] [Indexed: 10/21/2022]
Abstract
Besides the unquestionable positive effects of solar exposure for human health, UV rays have been widely investigated for toxicology aspects related to excessive UVB and UVA doses, which involve sunburns, skin aging, DNA skin damage and tumorigenesis. At present, synthetic and mineral sunscreens are used to protect against these damages but several natural molecules can provide UV protection, including also synergic effect or enhanced photo stability. Although a large number of herbal extracts and plant origin molecules can deserve potential applications, most of the study reported utilizes different method and different strategies of investigation, making thus difficult to understand the real versus claimed potential. This is possibly one of the reasons why, beside the large body of literature there are no officially approved natural commercial sun-filter but a consistent number of commercially available solar products (sunscreen) on the market that contain herbal derivatives. In this review we have evaluated the papers appeared in the last 15years and we have critically collected the most significant data. Several databases, namely Scifinder, Pubmed, Google Scholar, ISI-Web of Science and Scopus, were used as literature sources; excluding patents and symposium or congress papers. Only articles in the English language have been selected. New formulation, new skin delivery systems, skin penetration enhancers and boosters are most likely the next frontier of investigation in order to better understand the role of whole herbal extracts in exerting their photo protective activity.
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Affiliation(s)
- Matteo Radice
- Universidad Estatal Amazónica, Km 2 ½ Via Napo (paso lateral), Puyo, Pastaza, Ecuador
| | - Stefano Manfredini
- School of Pharmacy and Health Products, Department of Life Sciences and Biotechnology, Master Course in Cosmetic Science and Technology, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy; Ambrosialab Srl, Via Mortara 171, 44121 Ferrara, Italy.
| | - Paola Ziosi
- Ambrosialab Srl, Via Mortara 171, 44121 Ferrara, Italy
| | - Valeria Dissette
- School of Pharmacy and Health Products, Department of Life Sciences and Biotechnology, Master Course in Cosmetic Science and Technology, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy
| | - Piergiacomo Buso
- School of Pharmacy and Health Products, Department of Life Sciences and Biotechnology, Master Course in Cosmetic Science and Technology, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy
| | - Arianna Fallacara
- School of Pharmacy and Health Products, Department of Life Sciences and Biotechnology, Master Course in Cosmetic Science and Technology, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy
| | - Silvia Vertuani
- School of Pharmacy and Health Products, Department of Life Sciences and Biotechnology, Master Course in Cosmetic Science and Technology, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy; Ambrosialab Srl, Via Mortara 171, 44121 Ferrara, Italy
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13
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Gajowy J, Bolikal D, Kohn J, Fray ME. Synthesis and characterization of Fatty acid/amino Acid self-assemblies. J Funct Biomater 2014; 5:211-31. [PMID: 25347356 PMCID: PMC4285403 DOI: 10.3390/jfb5040211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2014] [Revised: 09/19/2014] [Accepted: 09/26/2014] [Indexed: 11/16/2022] Open
Abstract
In this paper, we discuss the synthesis and self-assembling behavior of new copolymers derived from fatty acid/amino acid components, namely dimers of linoleic acid (DLA) and tyrosine derived diphenols containing alkyl ester pendent chains, designated as "R" (DTR). Specific pendent chains were ethyl (E) and hexyl (H). These poly(aliphatic/aromatic-ester-amide)s were further reacted with poly(ethylene glycol) (PEG) and poly(ethylene glycol methyl ether) of different molecular masses, thus resulting in ABA type (hydrophilic-hydrophobic-hydrophilic) triblock copolymers. We used Fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR) spectroscopies to evaluate the chemical structure of the final materials. The molecular masses were estimated by gel permeation chromatography (GPC) measurements. The self-organization of these new polymeric systems into micellar/nanospheric structures in aqueous environment was evaluated using ultraviolet/visible (UV-VIS) spectroscopy, dynamic light scattering (DLS) and transmission electron microscopy (TEM). The polymers were found to spontaneously self-assemble into nanoparticles with sizes in the range 196-239 nm and critical micelle concentration (CMC) of 0.125-0.250 mg/mL. The results are quite promising and these materials are capable of self-organizing into well-defined micelles/nanospheres encapsulating bioactive molecules, e.g., vitamins or antibacterial peptides for antibacterial coatings on medical devices.
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Affiliation(s)
- Joanna Gajowy
- Department of Biomaterials and Microbiological Technologies, The West Pomeranian University of Technology, Szczecin, Al. Piastow 45, 70-311 Szczecin, Poland.
| | - Durgadas Bolikal
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, 145 Bevier Road, Piscataway, NJ 08854, USA.
| | - Joachim Kohn
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, 145 Bevier Road, Piscataway, NJ 08854, USA.
| | - Miroslawa El Fray
- Department of Biomaterials and Microbiological Technologies, The West Pomeranian University of Technology, Szczecin, Al. Piastow 45, 70-311 Szczecin, Poland.
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14
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León-Carmona JR, Martínez A, Galano A. New Free Radicals to Measure Antiradical Capacity: A Theoretical Study. J Phys Chem B 2014; 118:10092-100. [DOI: 10.1021/jp505586k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jorge Rafael León-Carmona
- Instituto
de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Ext. s/n, Ciudad Universitaria, P.O. Box 70-360, Coyoacán, C.P. 04510, México
| | - Ana Martínez
- Instituto
de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Ext. s/n, Ciudad Universitaria, P.O. Box 70-360, Coyoacán, C.P. 04510, México
| | - Annia Galano
- Departamento
de Química. Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Col. Vicentina, Iztapalapa, C.P. 09340, México
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15
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García-Padial M, Martínez-Ohárriz MC, Navarro-Blasco I, Zornoza A. The role of cyclodextrins in ORAC-fluorescence assays. antioxidant capacity of tyrosol and caffeic acid with hydroxypropyl-β-cyclodextrin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:12260-12264. [PMID: 24303878 DOI: 10.1021/jf403265b] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Tyrosol and caffeic acid are biophenols that contribute to the beneficial properties of virgin olive oil. The influence of hydroxypropyl-β-cyclodextrin (HPβ-CD) on their respective antioxidant capacities was analyzed. The ORAC antioxidant activity of tyrosol (expressed as μM Trolox equivalents/μM Tyrosol) was 0.83 ± 0.03 and it increased up to 1.20 ± 0.11 in the presence of 0.8 mM HPβ-CD. However, the ORAC antioxidant activity of caffeic acid experienced no change. The different effect of HPβ-CD on each compound was discussed. In addition, the effect of increasing concentrations of different cyclodextrins in the development of ORAC-fluorescence (ORAC-FL) assays was studied. The ORAC signal was higher for HPβ-CD, followed by Mβ-CD, β-CD, γ-CD and finally α-CD. These results could be explained by the formation of inclusion complexes with fluorescein.
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Affiliation(s)
- Marcos García-Padial
- Departamento de Química y Edafología, Facultad de Ciencias, University of Navarra , Irunlarrea s/n, Pamplona 31080, Navarra, Spain
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16
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Kim HJ, Jun JG, Kim JK. 2-(4-Hydroxyphenyl)-5-(3-Hydroxypropenyl)-7-Methoxybenzofuran, a Novel Ailanthoidol Derivative, Exerts Anti-Inflammatory Effect through Downregulation of Mitogen-Activated Protein Kinase in Lipopolysaccharide-Treated RAW 264.7 Cells. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2013; 17:217-22. [PMID: 23776398 PMCID: PMC3682082 DOI: 10.4196/kjpp.2013.17.3.217] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 04/17/2013] [Accepted: 05/02/2013] [Indexed: 12/31/2022]
Abstract
We reported that ailanthoidol, a neolignan from Zanthoxylum ailanthoides and Salvia miltiorrhiza Bunge, inhibited inflammatory reactions by macrophages and protected mice from endotoxin shock. We examined the anti-inflammatory activity of six synthetic ailanthoidol derivatives (compounds 1-6). Among them, compound 4, 2-(4-hydroxyphenyl)-5-(3-hydroxypropenyl)-7-methoxybenzofuran, had the lowest IC50 value concerning nitric oxide (NO) release from lipopolysaccharide (LPS)-stimulated RAW264.7 cells. Compound 4 suppressed the generation of prostaglandin (PG) E2 and the expression of inducible NO synthase and cyclooxygenase (COX)-2 induced by LPS, and inhibited the release of LPS-induced pro-inflammatory cytokines from RAW264.7 cells. The underlying mechanism of compound 4 on anti-inflammatory action was correlated with the down-regulation of mitogen-activated protein kinase and activator protein-1 activation. Compound 4 is potentially an effective functional chemical candidate for the prevention of inflammatory diseases.
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Affiliation(s)
- Hyeon Jin Kim
- Department of Biomedical Science, College of Natural Science, Catholic University of Daegu, Gyeongsan 700-712, Korea
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Prabha K, Prasad KJR. Dinaphthonaphthyridines – a class of novel molecules with potent antioxidant and anticancer activity. MEDCHEMCOMM 2013. [DOI: 10.1039/c2md20270k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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