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Guan Q, Tang L, Xu M, Zhang L, Huang L, Khan MS. Comparison of binding sites and affinity of flavonol-Cu(II) complexes with the same parent nucleus: Synthesis, DFT prediction, and coordination pattern. Food Chem 2024; 442:138453. [PMID: 38266407 DOI: 10.1016/j.foodchem.2024.138453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 01/05/2024] [Accepted: 01/13/2024] [Indexed: 01/26/2024]
Abstract
This study explores the coordination dynamics between dietary polyphenols, specifically kaempferol, quercetin, and myricetin, and Cu ions in aqueous environments. A novel synthesis method for flavonol-Cu(II) coordination compounds is introduced, effectively reducing interference from free metal ions. Our results reveal consistent binding patterns of Cu ions with flavonols (2:1 ratio of flavonol to Cu(II)), predominantly at the 4,5 sites. Various analytical techniques are used to validate these coordination ratios and sites. The binding affinity of the flavonols for Cu ions follows a descending sequence: myricetin > quercetin > kaempferol. Notably, coordination with Cu ions enhances the free-radical scavenging activities of these flavonols. These findings hold substantial importance for food chemistry, biology, and medicine, providing crucial insights into the way dietary flavonols form stable structures in environments similar to human body fluids and their interactions with metal ions, opening new possibilities for their application and understanding in diverse scientific domains.
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Affiliation(s)
- Qinhao Guan
- Institute of Chemical Industry of Forest Products, CAF; Key Lab. of Biomass Energy and Material, Jiangsu Province; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210042, China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Lihua Tang
- Institute of Chemical Industry of Forest Products, CAF; Key Lab. of Biomass Energy and Material, Jiangsu Province; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210042, China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Man Xu
- Institute of Chemical Industry of Forest Products, CAF; Key Lab. of Biomass Energy and Material, Jiangsu Province; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210042, China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China.
| | - Liangliang Zhang
- Academy of Advanced Carbon Conversion Technology, Huaqiao University, Xiamen, 361021, China; Fujian Provincial Key Laboratory of Biomass Low-Carbon Conversion, Huaqiao University, Xiamen, 361021, China.
| | - Lixin Huang
- Institute of Chemical Industry of Forest Products, CAF; Key Lab. of Biomass Energy and Material, Jiangsu Province; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210042, China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Mohd Shahnawaz Khan
- Department of Biochemistry, King Saud University, Riyadh, 11451, Saudi Arabia
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Walencik PK, Choińska R, Gołębiewska E, Kalinowska M. Metal-Flavonoid Interactions-From Simple Complexes to Advanced Systems. Molecules 2024; 29:2573. [PMID: 38893449 PMCID: PMC11173564 DOI: 10.3390/molecules29112573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 05/27/2024] [Accepted: 05/27/2024] [Indexed: 06/21/2024] Open
Abstract
For many years, metal-flavonoid complexes have been widely studied as a part of drug discovery programs, but in the last decade their importance in materials science has increased significantly. A deeper understanding of the role of metal ions and flavonoids in constructing simple complexes and more advanced hybrid networks will facilitate the assembly of materials with tailored architecture and functionality. In this Review, we highlight the most essential data on metal-flavonoid systems, presenting a promising alternative in the design of hybrid inorganic-organic materials. We focus mainly on systems containing CuII/I and FeIII/II ions, which are necessary in natural and industrial catalysis. We discuss two kinds of interactions that typically ensure the formation of metal-flavonoid systems, namely coordination and redox reactions. Our intention is to cover the fundamentals of metal-flavonoid systems to show how this knowledge has been already transferred from small molecules to complex materials.
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Affiliation(s)
- Paulina Katarzyna Walencik
- Institute of Agricultural and Food Biotechnology-State Research Institute, Rakowiecka 36, 02-532 Warsaw, Poland;
| | - Renata Choińska
- Institute of Agricultural and Food Biotechnology-State Research Institute, Rakowiecka 36, 02-532 Warsaw, Poland;
| | - Ewelina Gołębiewska
- Department of Chemistry, Biology and Biotechnology, Faculty of Civil and Environmental Sciences, Bialystok University of Technology, Wiejska 45E Street, 15-351 Bialystok, Poland;
| | - Monika Kalinowska
- Department of Chemistry, Biology and Biotechnology, Faculty of Civil and Environmental Sciences, Bialystok University of Technology, Wiejska 45E Street, 15-351 Bialystok, Poland;
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Golonko A, Olichwier AJ, Paszko A, Świsłocka R, Szczerbiński Ł, Lewandowski W. Biomaterials in Cancer Therapy: Investigating the Interaction between Kaempferol and Zinc Ions through Computational, Spectroscopic and Biological Analyses. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2526. [PMID: 38893790 PMCID: PMC11172956 DOI: 10.3390/ma17112526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 05/16/2024] [Accepted: 05/21/2024] [Indexed: 06/21/2024]
Abstract
A complex of the natural flavonoid kaempferol with zinc (Kam-Zn) was synthesized, and its physicochemical properties were investigated using spectroscopic methods such as Fourier transform infrared spectroscopy (FT-IR), ultraviolet-visible (UV-Vis) spectroscopy and theoretical chemistry. Biological studies were conducted to evaluate the cytotoxic and antiproliferative effects of these complexes on MCF-7 breast cancer cells. Treatment with Kam 100 µM (84.86 ± 7.79%; 64.37 ± 8.24%) and Kam-Zn 100 µM (91.87 ± 3.80%; 87.04 ± 13.0%) showed no significant difference in proliferation between 16 h and 32 h, with the gap width remaining stable. Both Kam-Zn 100 μM and 200 μM demonstrated effective antiproliferative and cytotoxic activity, significantly decreasing cell viability and causing cell death and morphology changes. Antioxidant assays revealed that Kam (IC50 = 5.63 ± 0.06) exhibited higher antioxidant potential compared to Kam-Zn (IC50 = 6.80 ± 0.075), suggesting that zinc coordination impacts the flavonoid's radical scavenging activity by the coordination of metal ion to hydroxyl groups. Computational studies revealed significant modifications in the electronic structure and properties of Kam upon forming 1:1 complexes with Zn2+ ions. Spectroscopy analyses confirmed structural changes, highlighting shifts in absorption peaks and alterations in functional group vibrations indicative of metal-ligand interactions. FT-IR and UV-Vis spectra analysis suggested that Zn coordinates with the 3-OH and 4C=O groups of ligand. These findings suggest that the Kam-Zn complex exhibits interesting antiproliferative, cytotoxic and modified antioxidant effects on MCF-7 cells, providing valuable insights into their structural and anticancer properties.
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Affiliation(s)
- Aleksandra Golonko
- Clinical Research Centre, Medical University of Bialystok, 15-276 Bialystok, Poland
- Prof. Wacław Dąbrowski Institute of Agricultural and Food Biotechnology—State Research Institute, 02-532 Warsaw, Poland;
| | - Adam Jan Olichwier
- Clinical Research Centre, Medical University of Bialystok, 15-276 Bialystok, Poland
| | - Adam Paszko
- Clinical Research Centre, Medical University of Bialystok, 15-276 Bialystok, Poland
| | - Renata Świsłocka
- Prof. Wacław Dąbrowski Institute of Agricultural and Food Biotechnology—State Research Institute, 02-532 Warsaw, Poland;
- Department of Chemistry, Biology and Biotechnology, Bialystok University of Technology, 15-351 Bialystok, Poland
| | - Łukasz Szczerbiński
- Clinical Research Centre, Medical University of Bialystok, 15-276 Bialystok, Poland
- Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Bialystok, 15-276 Bialystok, Poland
| | - Włodzimierz Lewandowski
- Prof. Wacław Dąbrowski Institute of Agricultural and Food Biotechnology—State Research Institute, 02-532 Warsaw, Poland;
- Department of Chemistry, Biology and Biotechnology, Bialystok University of Technology, 15-351 Bialystok, Poland
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Shanko SS, Badessa TS, Tura AM. Method development and validation for the quantitative determination of total flavonoids through the complexation of iron (III) and its application in real sample. Anal Chim Acta 2024; 1301:342443. [PMID: 38553117 DOI: 10.1016/j.aca.2024.342443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 02/09/2024] [Accepted: 03/01/2024] [Indexed: 04/02/2024]
Abstract
BACKGROUND The determination of flavonoids in real sample using UV-Vis spectrophotometer commonly uses quercetin and catechin with Al+3 complexing agent as reference materials for the calibration of the instrument. However, getting these standard materials is challenging due to its expense and unavailability in the chemical reserve of the country. Moreover, the Al+3 - quercetin complexation standard method demands high amount of quercetin in spite of its high cost. Hence, developing alternative method that can solve this problem is crucial for the determination of flavonoids in the real sample. RESULTS An iron-based complexation method for the determination of flavonoids in the real sample was developed that reduces the amount of quercetin by 200 times (1 mg/mL to 0.005 mg/mL) during the calibration of UV-Vis spectroscopy as an alternative method. The reaction parameters (incubation time, pH, and concentration of quercetin) were optimized using software Design Expert 11 and confirmed by the practical experiments. The kinetics of reaction between iron and quercetin was found to be pseudo first order with rate constant of kobs at 340 and 510 nm. The analysis window for the flavonoid complex was achieved with the kinetic discrimination of the interferences at its optimized time of complexation 20 min and absorbance maxima of 510 nm. The developed method was validated by evaluating its precision, accuracy, recovery test (84-117%), detection limit and quantification limit following the standard protocols. The calibration of the instrument has been developed for the new method and the linear regression coefficient (R2) of 0.998 was obtained. SIGNIFICANCE Applying the developed standard material (Fe3+ - quercetin complex) gives freedom for the analytical chemists to find the standard materials that is accessible and cheaper than the existing one (Al3+-quercetin complex). The developed method can also be easily applied for determination of flavonoid in the real samples without potential interferences coming from sample matrix.
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Affiliation(s)
- Sayge Sate Shanko
- Arba Minch University, College of Natural and Computational Sciences, Chemistry Department, P.O. Box 21, Arba Minch, Ethiopia.
| | - Tolera Seda Badessa
- Arba Minch University, College of Natural and Computational Sciences, Chemistry Department, P.O. Box 21, Arba Minch, Ethiopia.
| | - Alemu Mekonnen Tura
- Arba Minch University, College of Natural and Computational Sciences, Chemistry Department, P.O. Box 21, Arba Minch, Ethiopia.
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Zhou M, Ma J, Kang M, Tang W, Xia S, Yin J, Yin Y. Flavonoids, gut microbiota, and host lipid metabolism. Eng Life Sci 2024; 24:2300065. [PMID: 38708419 PMCID: PMC11065335 DOI: 10.1002/elsc.202300065] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 08/19/2023] [Accepted: 08/30/2023] [Indexed: 05/07/2024] Open
Abstract
Flavonoids are widely distributed in nature and have a variety of beneficial biological effects, including antioxidant, anti-inflammatory, and anti-obesity effects. All of these are related to gut microbiota, and flavonoids also serve as a bridge between the host and gut microbiota. Flavonoids are commonly used to modify the composition of the gut microbiota by promoting or inhibiting specific microbial species within the gut, as well as modifying their metabolites. In turn, the gut microbiota extensively metabolizes flavonoids. Hence, this reciprocal relationship between flavonoids and the gut microbiota may play a crucial role in maintaining the balance and functionality of the metabolism system. In this review, we mainly highlighted the biological effects of antioxidant, anti-inflammatory and antiobesity, and discussed the interaction between flavonoids, gut microbiota and lipid metabolism, and elaborated the potential mechanisms on host lipid metabolism.
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Affiliation(s)
- Miao Zhou
- College of Animal Science and TechnologyHunan Agricultural UniversityChangshaChina
| | - Jie Ma
- College of Animal Science and TechnologyHunan Agricultural UniversityChangshaChina
| | - Meng Kang
- College of Animal Science and TechnologyHunan Agricultural UniversityChangshaChina
| | - Wenjie Tang
- Sichuan Animal Science AcademyLivestock and Poultry Biological Products Key Laboratory of Sichuan ProvinceSichuan Animtech Feed Co., LtdChengduSichuanChina
| | - Siting Xia
- College of Animal Science and TechnologyHunan Agricultural UniversityChangshaChina
| | - Jie Yin
- College of Animal Science and TechnologyHunan Agricultural UniversityChangshaChina
| | - Yulong Yin
- College of Animal Science and TechnologyHunan Agricultural UniversityChangshaChina
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Roshal AD. Complexation of Flavonoids: Spectral Phenomena, Regioselectivity, Interplay with Charge and Proton Transfer. CHEM REC 2024; 24:e202300249. [PMID: 37786285 DOI: 10.1002/tcr.202300249] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/13/2023] [Indexed: 10/04/2023]
Abstract
The review compiles information on the spectral classification of flavonoids, the changes in their electronic structure upon complex formation, and the manifestation of these changes in the absorption and emission spectra. Part of the review is devoted to the regioselectivity of the complex formation process, including types of complexation sites, the structure of chelates and 'open' complexes, and the correlation between the structure of complexes and their spectral properties. The interplay between complex formation and other processes occurring in flavonoids during electronic excitation is also considered, such as intramolecular inter-fragment charge transfer (ICT) and intramolecular proton transfer (ESIPT). The review also contains systematic data on the study of regioselectivity and spectral properties of flavone complexes, obtained by the author and their colleagues over the past decades.
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Affiliation(s)
- Alexander D Roshal
- Research Institute of Chemistry, V.N. Karazin Kharkiv National University, 4 Svoboda square, Kharkiv, 61022, Ukraine
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Terfi S, Djerrad Z, Krimat S, Sadi F. Phytochemical composition, cytotoxicity, antioxidant and antimicrobial responses of Lavandula dentata L. grown under different levels of heavy metals stress condition. Drug Chem Toxicol 2023; 46:864-878. [PMID: 35892144 DOI: 10.1080/01480545.2022.2104868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 07/07/2022] [Accepted: 07/17/2022] [Indexed: 11/03/2022]
Abstract
In order to know if the heavy metals stress condition is boon or bane for the plants growth, Lavandula dentata species was planted in pots under different levels of heavy metals stress condition and the phytochemical composition, cytotoxicity, antioxidant and antimicrobial responses of their leaf ethanolic extracts toward this stress condition were investigated compared to the control samples. Our findings showed significant differences in heavy metals bioaccumulation, photosynthetic pigments and total phenolic/flavonoids contents among L. dentata leafs ethanolic extracts, grown under different levels of heavy metals stress condition. The L. dentata leafs extracts, grown under Zn and Cu stress condition, showed the highest antioxidant and antimicrobial activities than those grown under Cd and Pb stress condition. Comparatively, the L. dentata leafs extracts, grown under Zn stress condition, showed higher antioxidant activity, and those, grown under Cu stress condition, showed higher antimicrobial activity. The highest cytotoxicity was showed by L. dentata leaf extracts, grown under Cd and Pb stress condition, which lead to conclude that these extracts could be served as a novel scaffold in search for new drugs against cancer. In conclusion, the highlighted variability reflects the high impact of heavy metals stress condition on phytochemical composition and consequently on the biological activities of medicinal plants. Such impact led to conclude that we should select medicinal plants extracts to be investigated carefully depending on this stress condition, in order to isolate the bioactive components or to have the best quality of extracts in terms of biological activities.
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Affiliation(s)
- Souhila Terfi
- Laboratory of Electrochemistry-Corrosion, Metallurgy and Mineral Chemistry, Department of Chemistry, Faculty of Chemistry, Houari Boumediene University of Sciences and Technology (USTHB), Algiers, Algeria
| | - Zineb Djerrad
- Laboratory of Vegetal Ecology and Environment, Department of Ecology and Environment, Faculty of Biological Sciences, Houari Boumediene University of Sciences and Technology (USTHB), Algiers, Algeria
| | - Soumeya Krimat
- Laboratory of Bioactive Products and Biomass Valorization Research, ENS Kouba, Algiers, Algeria
| | - Fatma Sadi
- Laboratory of Electrochemistry-Corrosion, Metallurgy and Mineral Chemistry, Department of Chemistry, Faculty of Chemistry, Houari Boumediene University of Sciences and Technology (USTHB), Algiers, Algeria
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Benin BM, Hillyer T, Crugnale AS, Fulk A, Thomas CA, Crowder MW, Smith MA, Shin WS. Taxifolin as a Metallo-β-Lactamase Inhibitor in Combination with Augmentin against Verona Imipenemase 2 Expressing Pseudomonas aeruginosa. Microorganisms 2023; 11:2653. [PMID: 38004664 PMCID: PMC10673258 DOI: 10.3390/microorganisms11112653] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 10/23/2023] [Accepted: 10/25/2023] [Indexed: 11/26/2023] Open
Abstract
Among the various mechanisms that bacteria use to develop antibiotic resistance, the multiple expression of β-lactamases is particularly problematic, threatening public health and increasing patient mortality rates. Even if a combination therapy-in which a β-lactamase inhibitor is administered together with a β-lactam antibiotic-has proven effective against serine-β-lactamases, there are no currently approved metallo-β-lactamase inhibitors. Herein, we demonstrate that quercetin and its analogs are promising starting points for the further development of safe and effective metallo-β-lactamase inhibitors. Through a combined computational and in vitro approach, taxifolin was found to inhibit VIM-2 expressing P. aeruginosa cell proliferation at <4 μg/mL as part of a triple combination with amoxicillin and clavulanate. Furthermore, we tested this combination in mice with abrasive skin infections. Together, these results demonstrate that flavonol compounds, such as taxifolin, may be developed into effective metallo-β-lactamase inhibitors.
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Affiliation(s)
- Bogdan M. Benin
- Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, OH 44272, USA; (B.M.B.); (T.H.); (A.F.); (M.A.S.)
| | - Trae Hillyer
- Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, OH 44272, USA; (B.M.B.); (T.H.); (A.F.); (M.A.S.)
| | - Aylin S. Crugnale
- Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, OH 44272, USA; (B.M.B.); (T.H.); (A.F.); (M.A.S.)
| | - Andrew Fulk
- Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, OH 44272, USA; (B.M.B.); (T.H.); (A.F.); (M.A.S.)
| | - Caitlyn A. Thomas
- Department of Chemistry and Biochemistry, Miami University, Oxford, OH 45056, USA; (C.A.T.); (M.W.C.)
| | - Michael W. Crowder
- Department of Chemistry and Biochemistry, Miami University, Oxford, OH 45056, USA; (C.A.T.); (M.W.C.)
| | - Matthew A. Smith
- Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, OH 44272, USA; (B.M.B.); (T.H.); (A.F.); (M.A.S.)
- Akron Children’s Hospital, Rebecca D. Considine Research Institute, Akron, OH 44302, USA
| | - Woo Shik Shin
- Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, OH 44272, USA; (B.M.B.); (T.H.); (A.F.); (M.A.S.)
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Moravcová M, Lomozová Z, Kučera R, Mladěnka P. 3-Hydroxyflavone is a mildly active and safe cobalt chelator while cobalt markedly enhances baicalein toxicity toward erythrocytes. RSC Adv 2023; 13:29242-29251. [PMID: 37809024 PMCID: PMC10551802 DOI: 10.1039/d3ra02735j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 09/21/2023] [Indexed: 10/10/2023] Open
Abstract
Cobalt intoxication can occur after its release from metal-based prostheses, which is generally clinically severe. Therefore, there is a need for the development of a cobalt chelator since there are currently no approved drugs for cobalt intoxication. As flavonoids are known for their metal chelating properties and safety, the screening of cobalt chelating properties was performed in a total of 23 flavonoids by our recently developed new spectrophotometric assay. Further assessment of positive or negative consequences of cobalt chelation was performed both in vitro and ex vivo. Six and thirteen flavonoids significantly chelated cobalt ions at pH 7.5 and 6.8, respectively. Baicalein demonstrated a significant activity even at pH 5.5; however, none of the flavonoids showed chelation at pH 4.5. In general, baicalein and 3-hydroxyflavone were the most active. They also mildly decreased the cobalt-triggered Fenton reaction, but baicalein toxicity toward red blood cells was strongly increased by the addition of cobalt. Quercetin, tested as an example of flavonoid unable to chelate cobalt ions significantly, stimulated both the cobalt-based Fenton reaction and the lysis of erythrocytes in the presence of cobalt. Therefore, 3-hydroxyflavone can serve as a potential template for the development of novel cobalt chelators.
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Affiliation(s)
- Monika Moravcová
- The Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Králové, Charles University Akademika Heyrovského 1203 50005 Hradec Králové Czech Republic +420-495-067-295
| | - Zuzana Lomozová
- The Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy in Hradec Králové, Charles University Akademika Heyrovského 1203 50005 Hradec Králové Czech Republic
| | - Radim Kučera
- The Department of Pharmaceutical Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy in Hradec Králové, Charles University Akademika Heyrovského 1203 50005 Hradec Králové Czech Republic
| | - Přemysl Mladěnka
- The Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Králové, Charles University Akademika Heyrovského 1203 50005 Hradec Králové Czech Republic +420-495-067-295
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Liu J, Chen H, Lin H, Peng S, Chen L, Cheng X, Yao P, Tang Y. Iron-frataxin involved in the protective effect of quercetin against alcohol-induced liver mitochondrial dysfunction. J Nutr Biochem 2023; 114:109258. [PMID: 36587874 DOI: 10.1016/j.jnutbio.2022.109258] [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: 01/04/2022] [Revised: 12/17/2022] [Accepted: 12/26/2022] [Indexed: 12/31/2022]
Abstract
Emerging evidence supports the beneficial effect of quercetin on liver mitochondrial disorders. However, the molecular mechanism by which quercetin protects mitochondria is limited, especially in alcoholic liver disease. In this study, C57BL/6N mice were fed with Lieber De Carli liquid diet (28% ethanol-derived calories) for 12 weeks plus a single binge ethanol and intervened with quercetin (100 mg/kg.bw). Moreover, HepG2CYP2E1+/+ were stimulated with ethanol (100 mM) and quercetin (50 µM) to investigate the effects of mitochondrial protein frataxin. The results indicated that quercetin alleviated alcohol-induced histopathological changes and mitochondrial functional disorders in mice livers. Consistent with increased PINK1, Parkin, Bnip3 and LC3II as well as decreased p62, TOM20 and VDAC1 expression, the inhibition of mitophagy by ethanol was blocked by quercetin. Additionally, quercetin improved the imbalance of iron metabolism-related proteins expression in alcohol-fed mice livers. Compared with ethanol-treated Lv-empty HepG2CYP2E1+/+ cells, frataxin deficiency further exacerbated the inhibition of mitochondrial function. Conversely, restoration of frataxin expression ameliorated the effect of ethanol. Furthermore, frataxin deficiency reduced the protective effects of quercetin on mitochondria disordered by ethanol. Attentively, ferric ammonium citrate (FAC) and deferiprone decreased or increased frataxin expression in HepG2CYP2E1+/+, respectively. Notably, we further found FAC reversed the increasing effect of quercetin on frataxin expression. Ultimately, silencing NCOA4 attenuated the inhibition of quercetin on LDH release and mitochondrial membrane potential increase, and similar results were observed by adding FAC. Collectively, these findings demonstrated quercetin increased frataxin expression through regulating iron level, thereby mitigating ethanol-induced mitochondrial dysfunction.
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Affiliation(s)
- Jingjing Liu
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, Ministry of Education Key Laboratory of Environment and Health and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - Huimin Chen
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, Ministry of Education Key Laboratory of Environment and Health and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Hongkun Lin
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, Ministry of Education Key Laboratory of Environment and Health and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Shufen Peng
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, Ministry of Education Key Laboratory of Environment and Health and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Li Chen
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, Ministry of Education Key Laboratory of Environment and Health and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xueer Cheng
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, Ministry of Education Key Laboratory of Environment and Health and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ping Yao
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, Ministry of Education Key Laboratory of Environment and Health and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yuhan Tang
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, Ministry of Education Key Laboratory of Environment and Health and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
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Prestianni L, Espinal ER, Hathcock SF, Vollmuth N, Wang P, Holler RA, Liu S, Kim BJ, Bao Y. Synthesis and Characterization of Quercetin-Iron Complex Nanoparticles for Overcoming Drug Resistance. Pharmaceutics 2023; 15:pharmaceutics15041041. [PMID: 37111527 PMCID: PMC10144594 DOI: 10.3390/pharmaceutics15041041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/16/2023] [Accepted: 03/17/2023] [Indexed: 04/29/2023] Open
Abstract
Quercetin, one of the major natural flavonoids, has demonstrated great pharmacological potential as an antioxidant and in overcoming drug resistance. However, its low aqueous solubility and poor stability limit its potential applications. Previous studies suggest that the formation of quercetin-metal complexes could increase quercetin stability and biological activity. In this paper, we systematically investigated the formation of quercetin-iron complex nanoparticles by varying the ligand-to-metal ratios with the goal of increasing the aqueous solubility and stability of quercetin. It was found that quercetin-iron complex nanoparticles could be reproducibly synthesized with several ligand-to-iron ratios at room temperature. The UV-Vis spectra of the nanoparticles indicated that nanoparticle formation greatly increased the stability and solubility of quercetin. Compared to free quercetin, the quercetin-iron complex nanoparticles exhibited enhanced antioxidant activities and elongated effects. Our preliminary cellular evaluation suggests that these nanoparticles had minimal cytotoxicity and could effectively block the efflux pump of cells, indicating their potential for cancer treatment.
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Affiliation(s)
- Lucas Prestianni
- Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Eric R Espinal
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Sarah F Hathcock
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Nadine Vollmuth
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Pixiang Wang
- Department of Chemistry and Physics, Center for Materials and Manufacturing Sciences, Troy University, Troy, AL 36082, USA
| | - Robert A Holler
- Alabama Analytical Research Center, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Shaoyang Liu
- Department of Chemistry and Physics, Center for Materials and Manufacturing Sciences, Troy University, Troy, AL 36082, USA
| | - Brandon J Kim
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA
- Department of Microbiology, Heersink School of Medicine, The University of Alabama at Birmingham, Birmingham, AL 35487, USA
- Center for Convergent Biosciences and Medicine, The University of Alabama, Tuscaloosa, AL 35487, USA
- Alabama Life Research Institute, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Yuping Bao
- Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA
- Center for Convergent Biosciences and Medicine, The University of Alabama, Tuscaloosa, AL 35487, USA
- Alabama Life Research Institute, The University of Alabama, Tuscaloosa, AL 35487, USA
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12
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Duda-Chodak A, Tarko T. Possible Side Effects of Polyphenols and Their Interactions with Medicines. Molecules 2023; 28:molecules28062536. [PMID: 36985507 PMCID: PMC10058246 DOI: 10.3390/molecules28062536] [Citation(s) in RCA: 35] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/05/2023] [Accepted: 03/07/2023] [Indexed: 03/14/2023] Open
Abstract
Polyphenols are an important component of plant-derived food with a wide spectrum of beneficial effects on human health. For many years, they have aroused great interest, especially due to their antioxidant properties, which are used in the prevention and treatment of many diseases. Unfortunately, as with any chemical substance, depending on the conditions, dose, and interactions with the environment, it is possible for polyphenols to also exert harmful effects. This review presents a comprehensive current state of the knowledge on the negative impact of polyphenols on human health, describing the possible side effects of polyphenol intake, especially in the form of supplements. The review begins with a brief overview of the physiological role of polyphenols and their potential use in disease prevention, followed by the harmful effects of polyphenols which are exerted in particular situations. The individual chapters discuss the consequences of polyphenols’ ability to block iron uptake, which in some subpopulations can be harmful, as well as the possible inhibition of digestive enzymes, inhibition of intestinal microbiota, interactions of polyphenolic compounds with drugs, and impact on hormonal balance. Finally, the prooxidative activity of polyphenols as well as their mutagenic, carcinogenic, and genotoxic effects are presented. According to the authors, there is a need to raise public awareness about the possible side effects of polyphenols supplementation, especially in the case of vulnerable subpopulations.
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13
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Guimarães NSS, Ramos VS, Prado-Souza LFL, Lopes RM, Arini GS, Feitosa LGP, Silva RR, Nantes IL, Damasceno DC, Lopes NP, Rodrigues T. Rosemary (Rosmarinus officinalis L.) Glycolic Extract Protects Liver Mitochondria from Oxidative Damage and Prevents Acetaminophen-Induced Hepatotoxicity. Antioxidants (Basel) 2023; 12:antiox12030628. [PMID: 36978874 PMCID: PMC10045355 DOI: 10.3390/antiox12030628] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 02/26/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023] Open
Abstract
Rosmarinus officinalis L. (rosemary) is an aromatic culinary herb. Native to the Mediterranean region, it is currently cultivated worldwide. In addition to its use as a condiment in food preparation and in teas, rosemary has been widely employed in folk medicine and cosmetics. Several beneficial effects have been described for rosemary, including antimicrobial and antioxidant activities. Here, we investigated the mechanisms accounting for the antioxidant activity of the glycolic extract of R. officinalis (Ro) in isolated rat liver mitochondria (RLM) under oxidative stress conditions. We also investigated its protective effect against acetaminophen-induced hepatotoxicity in vivo. A crude extract was obtained by fractionated percolation, using propylene glycol as a solvent due to its polarity and cosmeceutical compatibility. The quantification of substances with recognized antioxidant action revealed the presence of phenols and flavonoids. Dereplication studies carried out through LC-MS/MS and GC-MS, supported by The Global Natural Product Social Molecular Networking (GNPS) platform, annotated several phenolic compounds, confirming the previous observation. In accordance, Ro decreased the production of reactive oxygen species (ROS) elicited by Fe2+ or t-BOOH and inhibited the lipid peroxidation of mitochondrial membranes in a concentration-dependent manner in RLM. Such an effect was also observed in liposomes as membrane models. Ro also prevented the oxidation of mitochondrial protein thiol groups and reduced glutathione (GSH). In model systems, Ro exhibited a potent scavenger activity toward 2,2′-diphenyl-1-picrylhydrazyl (DPPH) radicals and superoxide anions. It also demonstrated an Fe2+ chelating activity. Moreover, Ro did not exhibit cytotoxicity or dissipate the mitochondrial membrane potential (∆Ψ) in rat liver fibroblasts (BRL3A cells). To evaluate whether such antioxidant protective activity observed in vitro could also be achieved in vivo, a well-established model of hepatotoxicity induced by acute exposure to acetaminophen (AAP) was used. This model depletes GSH and promotes oxidative-stress-mediated tissue damage. The treatment of rats with 0.05% Ro, administered intraperitoneally for four days, resulted in inhibition of AAP-induced lipid peroxidation of the liver and the prevention of hepatotoxicity, maintaining alanine and aspartate aminotransferase (ALT/AST) levels equal to those of the normal, non-treated rats. Together, these findings highlight the potent antioxidant activity of rosemary, which is able to protect mitochondria from oxidative damage in vitro, and effects such as the antioxidant and hepatoprotective effects observed in vivo.
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Affiliation(s)
- Natalia S. S. Guimarães
- Interdisciplinary Center of Biochemistry Investigation, University of Mogi das Cruzes (UMC), Mogi das Cruzes CEP 08780-911, SP, Brazil
| | - Vyctória S. Ramos
- Interdisciplinary Center of Biochemistry Investigation, University of Mogi das Cruzes (UMC), Mogi das Cruzes CEP 08780-911, SP, Brazil
| | - Laura F. L. Prado-Souza
- Center for Natural and Human Sciences, Federal University of ABC, Santo André CEP 09210-580, SP, Brazil
| | - Rayssa M. Lopes
- Center for Natural and Human Sciences, Federal University of ABC, Santo André CEP 09210-580, SP, Brazil
| | - Gabriel S. Arini
- NPPNS, Department of Biomolecular Sciences, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto CEP 14040-900, SP, Brazil
| | - Luís G. P. Feitosa
- NPPNS, Department of Biomolecular Sciences, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto CEP 14040-900, SP, Brazil
| | - Ricardo R. Silva
- NPPNS, Department of Biomolecular Sciences, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto CEP 14040-900, SP, Brazil
| | - Iseli L. Nantes
- Center for Natural and Human Sciences, Federal University of ABC, Santo André CEP 09210-580, SP, Brazil
| | - Debora C. Damasceno
- Laboratory of Experimental Research on Gynecology and Obstetrics, Sao Paulo State University (UNESP), Botucatu CEP 18618-687, SP, Brazil
| | - Norberto P. Lopes
- NPPNS, Department of Biomolecular Sciences, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto CEP 14040-900, SP, Brazil
| | - Tiago Rodrigues
- Interdisciplinary Center of Biochemistry Investigation, University of Mogi das Cruzes (UMC), Mogi das Cruzes CEP 08780-911, SP, Brazil
- Correspondence: ; Tel.: +55-(11)-4996-8371
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14
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Zhang Z, Li W, Chang D, Wei Z, Wang E, Yu J, Xu Y, Que Y, Chen Y, Fan C, Ma B, Zhou Y, Huan Z, Yang C, Guo F, Chang J. A combination therapy for androgenic alopecia based on quercetin and zinc/copper dual-doped mesoporous silica nanocomposite microneedle patch. Bioact Mater 2022; 24:81-95. [PMID: 36582348 PMCID: PMC9772573 DOI: 10.1016/j.bioactmat.2022.12.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/23/2022] [Accepted: 12/08/2022] [Indexed: 12/15/2022] Open
Abstract
A nanocomposite microneedle (ZCQ/MN) patch containing copper/zinc dual-doped mesoporous silica nanoparticles loaded with quercetin (ZCQ) was developed as a combination therapy for androgenic alopecia (AGA). The degradable microneedle gradually dissolves after penetration into the skin and releases the ZCQ nanoparticles. ZCQ nanoparticles release quercetin (Qu), copper (Cu2+) and zinc ions (Zn2+) subcutaneously to synergistically promote hair follicle regeneration. The mechanism of promoting hair follicle regeneration mainly includes the regulation of the main pathophysiological phenomena of AGA such as inhibition of dihydrotestosterone, inhibition of inflammation, promotion of angiogenesis and activation of hair follicle stem cells by the combination of Cu2+ and Zn2+ ions and Qu. This study demonstrates that the systematic intervention targeting different pathophysiological links of AGA by the combination of organic drug and bioactive metal ions is an effective treatment strategy for hair loss, which provides a theoretical basis for development of biomaterial based anti-hair loss therapy.
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Affiliation(s)
- Zhaowenbin Zhang
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, PR China,Wenzhou Institute, University of Chinese Academy of Sciences, Zhejiang, 325000, PR China,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Wenbo Li
- Department of Plastic Surgery, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, 200025, PR China
| | - Di Chang
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, PR China,Fudan University, Shanghai, 200433, PR China
| | - Ziqin Wei
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, PR China,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Endian Wang
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, PR China,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Jing Yu
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, PR China,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Yuze Xu
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, PR China,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Yumei Que
- Wenzhou Institute, University of Chinese Academy of Sciences, Zhejiang, 325000, PR China
| | - Yanxin Chen
- Wenzhou Institute, University of Chinese Academy of Sciences, Zhejiang, 325000, PR China
| | - Chen Fan
- Wenzhou Institute, University of Chinese Academy of Sciences, Zhejiang, 325000, PR China
| | - Bing Ma
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, PR China,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Yanling Zhou
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, PR China,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Zhiguang Huan
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, PR China,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Chen Yang
- Wenzhou Institute, University of Chinese Academy of Sciences, Zhejiang, 325000, PR China,Corresponding author.
| | - Feng Guo
- Department of Plastic Surgery, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, 200025, PR China,Corresponding author.
| | - Jiang Chang
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, PR China,Wenzhou Institute, University of Chinese Academy of Sciences, Zhejiang, 325000, PR China,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China,Corresponding author. State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, PR China.
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15
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Ulaeto SB, Mathew GM, Pancrecious JK, Rajimol P, Karun AS, Rajan T. Azadirachta indica (Neem) Self-healing Efficacy Assessment in Epoxy Primer Coatings: A Bio-responsive Strategy for Counteracting Corrosion. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Pan Y, Qin R, Hou M, Xue J, Zhou M, Xu L, Zhang Y. The interactions of polyphenols with Fe and their application in Fenton/Fenton-like reactions. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121831] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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17
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Isatin Schiff base is an effective corrosion inhibitor for mild steel in hydrochloric acid solution: gravimetrical, electrochemical, and computational investigation. Sci Rep 2022; 12:17773. [PMID: 36273029 PMCID: PMC9588051 DOI: 10.1038/s41598-022-22611-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 10/17/2022] [Indexed: 11/09/2022] Open
Abstract
This paper describes the synthesis and characterisation of an isatin Schiff base, namely 2-(2-oxoindolin-3-ylidene) hydrazinecarbothioamide (OHB). The chemical structure of OHB was elucidated through proton-nuclear magnetic resonance (1H-NMR), carbon-nuclear magnetic resonance (13C NMR), and Fourier-transform infrared (FT-IR) spectroscopic techniques. OHB was evaluated for its corrosion inhibition ability on mild steel specimens in 1 M HCl using gravimetrical methods and electrochemical measurements such as electrochemical impedance spectroscopy (EIS) and potentiodynamic techniques complemented with microscopic analysis. The results indicated that OHB is a mixed-type inhibitor and showed good corrosion inhibition, with a maximum corrosion inhibition efficiency of 96.7% at a concentration of 0.5 mM and 303 K. The inhibition performance increased with an increasing OHB concentration and decreased with increasing temperature. The inhibition efficiency was attributed to the formation of a protective film on the surface of the tested mild steel coupon. The electrochemical impedance studies also indicated that the charge transfer resistance increased with an increase in OHB concentration. The morphological analysis confirmed the inhibition performance of OHB and the protective barrier film conformed to Langmuir monolayer adsorption. The experimental and theoretical corrosion kinetics and thermodynamic parameters were in agreement and revealed that an adsorption film of Fe–N coordination bonds formed on the mild steel surface.
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18
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Laksana PJB, Tsai LC, Lin CC, Chang-Liao KS, Moodley MK, Chen CD. Opto Field-Effect Transistors for Detecting Quercetin-Cu 2+ Complex. SENSORS (BASEL, SWITZERLAND) 2022; 22:s22197219. [PMID: 36236317 PMCID: PMC9573373 DOI: 10.3390/s22197219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/19/2022] [Accepted: 09/19/2022] [Indexed: 05/27/2023]
Abstract
In this study, we explored the potential of applying biosensors based on silicon nanowire field-effect transistors (bio-NWFETs) as molecular absorption sensors. Using quercetin and Copper (Cu2+) ion as an example, we demonstrated the use of an opto-FET approach for the detection of molecular interactions. We found that photons with wavelengths of 450 nm were absorbed by the molecular complex, with the absorbance level depending on the Cu2+ concentration. Quantitative detection of the molecular absorption of metal complexes was performed for Cu2+ concentrations ranging between 0.1 μM and 100 μM, in which the photon response increased linearly with the copper concentration under optimized bias parameters. Our opto-FET approach showed an improved absorbance compared with that of a commercial ultraviolet-visible spectrophotometry.
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Affiliation(s)
- Pradhana Jati Budhi Laksana
- Department of Engineering and System Science, National Tsing Hua University, Hsinchu 30013, Taiwan
- Nano Science and Technology Program, Taiwan International Graduate Program, Academia Sinica, Taipei 11529, Taiwan
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
| | - Li-Chu Tsai
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 10608, Taiwan
| | - Chang-Cheng Lin
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 10608, Taiwan
| | - Kuei-Shu Chang-Liao
- Department of Engineering and System Science, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Mathew K. Moodley
- Discipline of Physics, School of Chemistry and Physics, College of Agriculture, Engineering and Science, University of KwaZulu-Natal, Durban 4000, South Africa
| | - Chii-Dong Chen
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
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19
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Molecular and Cellular Mechanisms of Propolis and Its Polyphenolic Compounds against Cancer. Int J Mol Sci 2022; 23:ijms231810479. [PMID: 36142391 PMCID: PMC9499605 DOI: 10.3390/ijms231810479] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 08/31/2022] [Accepted: 09/05/2022] [Indexed: 12/12/2022] Open
Abstract
In recent years, interest in natural products such as alternative sources of pharmaceuticals for numerous chronic diseases, including tumors, has been renewed. Propolis, a natural product collected by honeybees, and polyphenolic/flavonoid propolis-related components modulate all steps of the cancer progression process. Anticancer activity of propolis and its compounds relies on various mechanisms: cell-cycle arrest and attenuation of cancer cells proliferation, reduction in the number of cancer stem cells, induction of apoptosis, modulation of oncogene signaling pathways, inhibition of matrix metalloproteinases, prevention of metastasis, anti-angiogenesis, anti-inflammatory effects accompanied by the modulation of the tumor microenvironment (by modifying macrophage activation and polarization), epigenetic regulation, antiviral and bactericidal activities, modulation of gut microbiota, and attenuation of chemotherapy-induced deleterious side effects. Ingredients from propolis also "sensitize" cancer cells to chemotherapeutic agents, likely by blocking the activation of the transcription factor nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB). In this review, we summarize the current knowledge related to the the effects of flavonoids and other polyphenolic compounds from propolis on tumor growth and metastasizing ability, and discuss possible molecular and cellular mechanisms involved in the modulation of inflammatory pathways and cellular processes that affect survival, proliferation, invasion, angiogenesis, and metastasis of the tumor.
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20
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Electrochemical study and experimental simulation of the synergistic effect of a formulation based on Ficus pumila Linn. Leaves extract and zinc sulfate on the XC38 steel corrosion inhibition in NaCl solution. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116553] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Plant-Derived Catechols Are Substrates of TonB-Dependent Transporters and Sensitize Pseudomonas aeruginosa to Siderophore-Drug Conjugates. mBio 2022; 13:e0149822. [PMID: 35770947 PMCID: PMC9426570 DOI: 10.1128/mbio.01498-22] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Pseudomonas aeruginosa is an opportunistic pathogen responsible for acute and chronic infections in immunocompromised hosts. This organism is known to compete efficiently against coinfecting microorganisms, due in part to the secretion of antimicrobial molecules and the synthesis of siderophore molecules with high affinity for iron. P. aeruginosa possess a large repertoire of TonB-dependent transporters for the uptake of its own, as well as xenosiderophores released from other bacteria or fungi. Here, we show that P. aeruginosa is also capable of utilizing plant-derived polyphenols as an iron source. We found that exclusively plant-derived phenols containing a catechol group (i.e., chlorogenic acid, caffeic acid, quercetin, luteolin) induce the expression of the TonB-dependent transporters PiuA or PirA. This induction requires the two-component system PirR-PirS. Chlorogenic acid in its Fe(III)-loaded form was actively transported by PiuA and PirA and supported growth under iron-limiting conditions. Coincidentally, PiuA and PirA are also the main TonB transporters for the recently approved siderophore-drug conjugate cefiderocol. Surprisingly, quercetin supplementation increased the susceptibility of P. aeruginosa to siderophore-drug conjugates, due to induction of piuA and pirA expression mediated by the PirR-PirS two-component system. These findings suggest a potential novel therapeutic application for these biologically active dietary polyphenols.
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22
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Ali IAA, Neelakantan P. Antibiofilm activity of phytochemicals against Enterococcus faecalis: A literature review. Phytother Res 2022; 36:2824-2838. [PMID: 35522168 DOI: 10.1002/ptr.7488] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 02/17/2022] [Accepted: 04/19/2022] [Indexed: 12/11/2022]
Abstract
Enterococcus faecalis is a leading causative pathogen of recalcitrant infections affecting heart valves, urinary tract, surgical wounds and dental root canals. Its robust biofilm formation, production of virulence factors and antibiotic resistance contribute significantly to its pathogenicity in persistent infections. The decreased effectiveness of most of antibiotics in preventing and/or eradicating E. faecalis biofilms mandates the discovery of alternative novel antibiofilm agents. Phytochemicals are potential sources of antibiofilm agents due to their antivirulence activity, diversity of chemical structure and multiple mechanisms of action. In this review, we describe the phenotypic and genetic attributes that contribute to antimicrobial tolerance of E. faecalis biofilms. We illuminate the benefits of implementing the phytochemicals to tackle microbial pathogens. Finally, we report the antibiofilm activity of phytochemicals against E. faecalis, and explain their mechanisms of action. These compounds belong to different chemical classes such as terpenes, phenylpropenes, flavonoids, curcuminoids and alkaloids. They demonstrate the ability to inhibit the formation of and/or eradicate E. faecalis biofilms. However, the exact mechanisms of action of most of these compounds are not fully understood. Therefore, the future studies should elucidate the underlying mechanisms in detail.
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Affiliation(s)
- Islam A A Ali
- Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR
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23
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Li J, Zhu J, Wu H, Li W. Synthesis, in vitro, and in silico studies of fisetin and quercetin and their metal complexes as inhibitors of α-glucosidase and thrombin. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118164] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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24
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Hanada A, Morimoto R, Horio Y, Shichiri M, Nakashima A, Ogawa T, Suzuki K, Sumitani H, Ogata T, Isegawa Y. Influenza virus entry and replication inhibited by 8-prenylnaringenin from Citrullus lanatus var. citroides (wild watermelon). Food Sci Nutr 2022; 10:926-935. [PMID: 35282012 PMCID: PMC8907720 DOI: 10.1002/fsn3.2725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 12/11/2021] [Accepted: 12/22/2021] [Indexed: 12/05/2022] Open
Abstract
We previously demonstrated the anti-influenza activity of Citrullus lanatus var. citroides (wild watermelon, WWM); however, the active ingredient was unknown. Here, we performed metabolomic analysis to evaluate the ingredients of WWM associated with antiviral activity. Many low-molecular weight compounds were identified, with flavonoids accounting for 35% of all the compounds in WWM juice. Prenylated flavonoids accounted for 30% of the flavonoids. Among the measurable components of phytoestrogens in WWM juice, 8-prenylnaringenin showed the highest antiviral activity. We synthesized 8-prenylnaringenin and used liquid chromatography-mass spectrometry to quantitate the active ingredient in WWM. The antiviral activities of 8-prenylnaringenin were observed against H1N1 and H3N2 influenza A subtypes and influenza B viruses. Moreover, 8-prenylnaringenin was found to inhibit virus adsorption and late-stage virus replication, suggesting that the mechanisms of action of 8-prenylnaringenin may differ from those of amantadine and oseltamivir. We confirmed that 8-prenylnaringenin strongly inhibited the viral entry of all the influenza virus strains that were examined, including those resistant to the anti-influenza drugs oseltamivir and amantadine. This result indicates that 8-prenylnaringenin may activate the host cell's defense mechanisms, rather than directly acting on the influenza virus. Since 8-prenylnaringenin did not inhibit late-stage virus replication of oseltamivir-resistant strains, 8-prenylnaringenin may interact directly with viral neuraminidase. These results are the first report on the anti-influenza virus activity of 8-prenylnaringenin. Our results highlight the potential of WWM and phytoestrogens to develop effective prophylactic and therapeutic approaches to the influenza virus.
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Affiliation(s)
- Akari Hanada
- Department of Food Sciences and NutritionMukogawa Women’s UniversityNishinomiyaJapan
| | - Ryosuke Morimoto
- Department of Food Sciences and NutritionMukogawa Women’s UniversityNishinomiyaJapan
- Present address:
Faculty of Human Life ScienceShikoku UniversityTokushimaJapan
| | - Yuka Horio
- Department of Food Sciences and NutritionMukogawa Women’s UniversityNishinomiyaJapan
| | - Mototada Shichiri
- Biomedical Research InstituteNational Institute of Advanced Industrial Science and Technology (AIST)IkedaJapan
| | | | | | | | | | - Tokutaro Ogata
- Faculty of Health and Medical SciencesHokuriku UniversityKanazawaJapan
| | - Yuji Isegawa
- Department of Food Sciences and NutritionMukogawa Women’s UniversityNishinomiyaJapan
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Shastrala K, Kalam S, Damerakonda K, Sheshagiri SBB, Kumar H, Guda R, Kasula M, Bedada SK. Synthesis, characterization, and pharmacological evaluation of some metal complexes of quercetin as P-gp inhibitors. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2021. [DOI: 10.1186/s43094-021-00252-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Abstract
Background
Six different metal complexes of quercetin (Cu, Zn, Co, Vd, Mo, Ni) were synthesized, purified, and characterized by their physical and spectral (UV, IR) data. They were evaluated for their P-gp (permeability glycoprotein) inhibitory activity by in vitro everted sac method in rats. The apparent permeability of atorvastatin (P-gp substrate) from everted sac of the rat intestine was determined in control, standard (verapamil), and groups treated with quercetin-metal complexes. The drug contents were analyzed by validated RP-HPLC method using a mixture of acetonitrile and water (60:40 v/v) adjusted to pH 2.8 with phosphate buffer as mobile phase.
Results
In vitro studies revealed that the apparent permeability of atorvastatin (P-gp substrate) across the small intestine is much affected by the treatment with Cu/Co/Ni complexes of quercetin. The mean ± SD and apparent permeability of atorvastatin decreased after pre-treatment with these metal complexes.
Conclusions
The quercetin Cu/Co/Ni complexes could inhibit P-gp and increase the atorvastatin absorption. Hence, they could be considered P-gp inhibitors.
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Bardestani A, Ebrahimpour S, Esmaeili A, Esmaeili A. Quercetin attenuates neurotoxicity induced by iron oxide nanoparticles. J Nanobiotechnology 2021; 19:327. [PMID: 34663344 PMCID: PMC8522232 DOI: 10.1186/s12951-021-01059-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 09/24/2021] [Indexed: 01/19/2023] Open
Abstract
Iron oxide nanoparticles (IONPs) have been proposed as targeted carriers to deliver therapeutic molecules in the central nervous system (CNS). However, IONPs may damage neural tissue via free iron accumulation, protein aggregation, and oxidative stress. Neuroprotective effects of quercetin (QC) have been proven due to its antioxidant and anti-inflammatory properties. However, poor solubility and low bioavailability of QC have also led researchers to make various QC-involved nanoparticles to overcome these limitations. We wondered how high doses or prolonged treatment with quercetin conjugated superparamagnetic iron oxide nanoparticles (QCSPIONs) could improve cognitive dysfunction and promote neurogenesis without any toxicity. It can be explained that the QC inhibits protein aggregation and acts against iron overload via iron-chelating activity, iron homeostasis genes regulation, radical scavenging, and attenuation of Fenton/Haber-Weiss reaction. In this review, first, we present brain iron homeostasis, molecular mechanisms of iron overload that induced neurotoxicity, and the role of iron in dementia-associated diseases. Then by providing evidence of IONPs neurotoxicity, we discuss how QC neutralizes IONPs neurotoxicity, and finally, we make a brief comparison between QC and conventional iron chelators. In this review, we highlight that QC as supplementation and especially in conjugated form reduces iron oxide nanoparticles neurotoxicity in clinical application.
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Affiliation(s)
- Akram Bardestani
- Department of Cell and Molecular Biology & Microbiology, Faculty of Biological Science and Technology, University of Isfahan, P.O. Box: 8174673441, Isfahan, Iran
| | - Shiva Ebrahimpour
- Department of Cell and Molecular Biology & Microbiology, Faculty of Biological Science and Technology, University of Isfahan, P.O. Box: 8174673441, Isfahan, Iran
| | - Ali Esmaeili
- School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Abolghasem Esmaeili
- Department of Cell and Molecular Biology & Microbiology, Faculty of Biological Science and Technology, University of Isfahan, P.O. Box: 8174673441, Isfahan, Iran.
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Lewis T, Wallace W, Peterson FD, Rafferty S, Martic S. Reactivities of quercetin and metallo‐quercetin with superoxide anion radical and molecular oxygen. ELECTROCHEMICAL SCIENCE ADVANCES 2021. [DOI: 10.1002/elsa.202100054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Affiliation(s)
- Tyra Lewis
- Department of Forensic Science Environmental and Life Sciences Program Trent University Peterborough Ontario Canada
| | - William Wallace
- Department of Forensic Science Environmental and Life Sciences Program Trent University Peterborough Ontario Canada
| | - Finlay Dingman Peterson
- Department of Forensic Science Environmental and Life Sciences Program Trent University Peterborough Ontario Canada
| | - Steven Rafferty
- Department of Chemistry Environmental and Life Sciences Program Trent University Peterborough Ontario Canada
| | - Sanela Martic
- Department of Forensic Science Environmental and Life Sciences Program Trent University Peterborough Ontario Canada
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Chirug L, Eran Nagar E, Okun Z, Shpigelman A. Effect of flavonoid structure and pH on iron-mediated pectin interaction. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Wang X, Zhong X, Li J, Liu Z, Cheng L. Inorganic nanomaterials with rapid clearance for biomedical applications. Chem Soc Rev 2021; 50:8669-8742. [PMID: 34156040 DOI: 10.1039/d0cs00461h] [Citation(s) in RCA: 196] [Impact Index Per Article: 65.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Inorganic nanomaterials that have inherently exceptional physicochemical properties (e.g., catalytic, optical, thermal, electrical, or magnetic performance) that can provide desirable functionality (e.g., drug delivery, diagnostics, imaging, or therapy) have considerable potential for application in the field of biomedicine. However, toxicity can be caused by the long-term, non-specific accumulation of these inorganic nanomaterials in healthy tissues, preventing their large-scale clinical utilization. Over the past several decades, the emergence of biodegradable and clearable inorganic nanomaterials has offered the potential to prevent such long-term toxicity. In addition, a comprehensive understanding of the design of such nanomaterials and their metabolic pathways within the body is essential for enabling the expansion of theranostic applications for various diseases and advancing clinical trials. Thus, it is of critical importance to develop biodegradable and clearable inorganic nanomaterials for biomedical applications. This review systematically summarizes the recent progress of biodegradable and clearable inorganic nanomaterials, particularly for application in cancer theranostics and other disease therapies. The future prospects and opportunities in this rapidly growing biomedical field are also discussed. We believe that this timely and comprehensive review will stimulate and guide additional in-depth studies in the area of inorganic nanomedicine, as rapid in vivo clearance and degradation is likely to be a prerequisite for the future clinical translation of inorganic nanomaterials with unique properties and functionality.
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Affiliation(s)
- Xianwen Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu Province, China.
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Malacaria L, Corrente GA, Beneduci A, Furia E, Marino T, Mazzone G. A Review on Coordination Properties of Al(III) and Fe(III) toward Natural Antioxidant Molecules: Experimental and Theoretical Insights. Molecules 2021; 26:molecules26092603. [PMID: 33946938 PMCID: PMC8124610 DOI: 10.3390/molecules26092603] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 12/24/2022] Open
Abstract
This review focuses on the ability of some natural antioxidant molecules (i.e., hydroxycinnamic acids, coumarin-3-carboxylic acid, quercetin, luteolin and curcumin) to form Al(III)- and Fe(III)-complexes with the aim of evaluating the coordination properties from a combined experimental and theoretical point of view. Despite the contributions of previous studies on the chemical properties and biological activity of these metal complexes involving such natural antioxidants, further detailed relationships between the structure and properties are still required. In this context, the investigation on the coordination properties of Al(III) and Fe(III) toward these natural antioxidant molecules might deserve high interest to design water soluble molecule-based metal carriers that can improve the metal’s intake and/or its removal in living organisms.
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Antioxidant vs. Prooxidant Properties of the Flavonoid, Kaempferol, in the Presence of Cu(II) Ions: A ROS-Scavenging Activity, Fenton Reaction and DNA Damage Study. Int J Mol Sci 2021; 22:ijms22041619. [PMID: 33562744 PMCID: PMC7915082 DOI: 10.3390/ijms22041619] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 01/29/2021] [Accepted: 02/03/2021] [Indexed: 01/04/2023] Open
Abstract
Kaempferol is a flavonoid that occurs in tea and in many vegetables and fruits, including broccoli, cabbage, beans, grapes, apples, and strawberries. The efficacy of Kaempferol has been demonstrated in the treatment of breast, esophageal, cervical, ovarian, and liver cancers and leukemia, which very likely arises from its prooxidant properties and the activation of pro-apoptotic pathways. Indeed, this matter has already been the focus of a number of published studies and reviews. The aim of the present study was to elucidate the antioxidant vs. prooxidant properties of flavonoids in the presence of the redox-active metal, copper (II) ion, by means of the Fenton reaction. The specific motivation of this work is that, since an increased level of Cu(II) ions is known to be associated with many disease states such as neurological conditions (Alzheimer’s disease) and cancer, any interaction between these ions and flavonoids might affect the outcome of therapeutic uses of the latter. The structure of the Cu-kaempferol complex in DMSO was investigated by means of low temperature EPR spectroscopy, which confirmed the existence of at least two distinct coordination environments around the copper (II) ion. UV vis-spectra of kaempferol and its Cu(II) complex in DMSO revealed an interaction between the 5-OH (A ring) group and the 4-CO (C ring) group of kaempferol with Cu(II) ions. An ABTS assay confirmed that kaempferol acted as an effective radical scavenger, and that this effect was further enhanced in the form of the Cu(II)-kaempferol complex. Quantitative EPR spin trapping experiments, using DMPO as the spin trap, confirmed suppression of the formation of a mixture of hydroxyl, superoxide, and methyl radicals, in a Fenton reaction system, upon coordination of kaempferol to the redox-active Cu(II) ions, by 80% with respect to the free Cu(II) ions. A viscometric study revealed a better DNA-intercalating ability of the Cu-kaempferol complex than for free kaempferol, essential for conferring anticancer activity of these substances. The results of the viscometric measurements were compared with those from a DNA damage study of Cu-kaempferol complexes in a Fenton reaction system, using gel electrophoresis. At low concentrations of kaempferol (Cu–kaempferol ratios of 1:1 and 1:2), a very weak protective effect on DNA was noted, whereas when kaempferol was present in excess, a significant DNA-protective effect was found. This can be explained if the weakly intercalated kaempferol molecules present at the surface of DNA provide protection against attack by ROS that originate from the Fenton reaction involving intercalated Cu(II)-kaempferol complexes. Following the application of ROS scavengers, L-histidine, DMSO, and SOD, gel electrophoresis confirmed the formation of singlet oxygen, hydroxyl radicals, and superoxide radical anions, respectively. We propose that the prooxidant properties of Cu-kaempferol complexes may provide anticancer activity of these substances. When present in excess, kaempferol displays antioxidant properties under Cu-Fenton conditions. This suggests that kaempferol might prove a suitable candidate for the prevention or treatment of oxidative stress related medical conditions that involve a disturbed metabolism of redox metals such as copper, for example, Menkes disease, and neurological disorders, including Alzheimer’s disease. For the potential use of kaempferol in clinical practice, it will be necessary to optimize the dose size and critical age of the patient so that this flavonoid may be beneficial as a preventive drug against cancer and neurological disorders.
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Papan P, Kantapan J, Sangthong P, Meepowpan P, Dechsupa N. Iron (III)-Quercetin Complex: Synthesis, Physicochemical Characterization, and MRI Cell Tracking toward Potential Applications in Regenerative Medicine. CONTRAST MEDIA & MOLECULAR IMAGING 2020; 2020:8877862. [PMID: 33456403 PMCID: PMC7785384 DOI: 10.1155/2020/8877862] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 12/09/2020] [Accepted: 12/16/2020] [Indexed: 12/20/2022]
Abstract
In cell therapy, contrast agents T1 and T2 are both needed for the labeling and tracking of transplanted stem cells over extended periods of time through magnetic resonance imaging (MRI). Importantly, the metal-quercetin complex via coordination chemistry has been studied extensively for biomedical applications, such as anticancer therapies and imaging probes. Herein, we report on the synthesis, characterization, and labeling of the iron (III)-quercetin complex, "IronQ," in circulating proangiogenic cells (CACs) and also explore tracking via the use of a clinical 1.5 Tesla (T) MRI scanner. Moreover, IronQ had a paramagnetic T1 positive contrast agent property with a saturation magnetization of 0.155 emu/g at 1.0 T and longitudinal relaxivity (r1) values of 2.29 and 3.70 mM-1s-1 at 1.5 T for water and human plasma, respectively. Surprisingly, IronQ was able to promote CAC growth in conventional cell culture systems without the addition of specific growth factors. Increasing dosages of IronQ from 0 to 200 μg/mL led to higher CAC uptake, and maximum labeling time was achieved in 10 days. The accumulated IronQ in CACs was measured by two methodologies, an inductively coupled plasma optical emission spectrometry (ICP-EOS) and T1-weighted MRI. In our research, we confirmed that IronQ has excellent dual functions with the use of an imaging probe for MRI. IronQ can also act as a stimulating agent by favoring circulating proangiogenic cell differentiation. Optimistically, IronQ is considered beneficial for alternative labeling and in the tracking of circulation proangiogenic cells and/or other stem cells in applications of cell therapy through noninvasive magnetic resonance imaging in both preclinical and clinical settings.
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Affiliation(s)
- Phakorn Papan
- Research Unit of Molecular Imaging Probes and Radiobiology, Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Jiraporn Kantapan
- Research Unit of Molecular Imaging Probes and Radiobiology, Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Padchanee Sangthong
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Puttinan Meepowpan
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Nathupakorn Dechsupa
- Research Unit of Molecular Imaging Probes and Radiobiology, Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
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Liu H, Han Y, Wang T, Zhang H, Xu Q, Yuan J, Li Z. Targeting Microglia for Therapy of Parkinson's Disease by Using Biomimetic Ultrasmall Nanoparticles. J Am Chem Soc 2020; 142:21730-21742. [PMID: 33315369 DOI: 10.1021/jacs.0c09390] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Microglia as an important type of innate immune cell in the brain have been considered as an effective therapeutic target for the treatment of central nervous degenerative diseases. Herein, we report cell membrane coated novel biomimetic Cu2-xSe-PVP-Qe nanoparticles (denoted as CSPQ@CM nanoparticles, where PVP is poly(vinylpyrrolidone), Qe is quercetin, and CM is the cell membrane of neuron cells) for effectively targeting and modulating microglia to treat Parkinson's disease (PD). The CSPQ nanoparticles exhibit multienzyme activities and could effectively scavenge the reactive oxygen species and promote the polarization of microglia into the anti-inflammatory M2-like phenotype to relieve neuroinflammation. We reveal that biomimetic CSPQ@CM nanoparticles targeted microglia through the specific interactions between the membrane surface vascular cells adhering to molecule-1 and α4β1 integrin expressed by microglia. They could significantly improve the symptoms of PD mice to result in an excellent therapeutic efficacy, as evidenced by the recovery of their dopamine level in cerebrospinal fluid, tyrosine hydroxylase, and ionized calcium binding adapter protein 1 to normal levels. Our work demonstrates the great potential of these robust biomimetic nanoparticles in the targeted treatment of PD and other central nervous degenerative diseases.
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Affiliation(s)
- Hanghang Liu
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou 215123, P. R. China
| | - Yaobao Han
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou 215123, P. R. China
| | - Tingting Wang
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou 215123, P. R. China
| | - Hao Zhang
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou 215123, P. R. China.,Department of Materials and Chemical Engineering, Soochow University, Suzhou 215123, China
| | - Qi Xu
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou 215123, P. R. China
| | - Jiaxin Yuan
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou 215123, P. R. China
| | - Zhen Li
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou 215123, P. R. China
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Hudecova L, Jomova K, Lauro P, Simunkova M, Alwasel SH, Alhazza IM, Moncol J, Valko M. Antimicrobial and antifungal activities of bifunctional cooper(ii) complexes with non-steroidal anti-inflammatory drugs, flufenamic, mefenamic and tolfenamic acids and 1,10-phenanthroline. OPEN CHEM 2020. [DOI: 10.1515/chem-2020-0180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractCooper(ii) complexes represent a promising group of compounds with antimicrobial and antifungal properties. In the present work, a series of Cu(ii) complexes containing the non-steroidal anti-inflammatory drugs, tolfenamic acid, mefenamic acid and flufenamic acid as their redox-cycling functionalities, and 1,10-phenanthroline as an intercalating component, has been studied. The antibacterial activities of all three complexes, [Cu(tolf-O,O′)2(phen)] (1), [Cu(mef-O,O′)2(phen)] (2) and [Cu(fluf-O,O′)2(phen)] (3), were tested against the prokaryotic model organisms Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) and their antifungal activities were evaluated towards the yeast, Saccharomyces cerevisiae (S. cerevisiae). The antibacterial activity of both strains has been compared with the antibiotic Neomycin. The calculated IC50 values revealed slight differences in the antibacterial activities of the complexes in the order 1 ∼ 3 > 2. The most profound growth inhibition of E. coli was observed, at its highest concentration, for the complex 1, which contains chlorine atoms in the ligand environment. The trend obtained from IC50 values is generally in agreement with the determined MIC values. Similarly, the complex 1 showed the greatest growth inhibition of the yeast S. cerevisiae and the overall antifungal activities of the Cu(ii) complexes were found to follow the order 1 > 3 ≫ 2. However, for complex 2, even at the highest concentration tested (150 μM), a 50% decrease in yeast growth was not achieved. It appears that the most potent antimicrobial and antifungal Cu(ii) complexes are those containing halogenated NSAIDs. The mechanisms by which Cu(ii) complexes cause antibacterial and antifungal activities can be understood on the basis of redox-cycling reactions between cupric and cuprous species which lead to the formation of free radicals. The higher efficacy of the Cu(ii) complexes against bacterial cells may be due to an absence of membrane-protected nuclear DNA, meaning that on entering a cell, they can interact directly with its DNA. Contrastingly, for the complexes to interact with the DNA in yeast cells, they must first penetrate through the nuclear membrane.
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Affiliation(s)
- Lenka Hudecova
- Department of Chemistry, Constantine the Philosopher University in Nitra, 949 74, Nitra, Slovakia
| | - Klaudia Jomova
- Department of Chemistry, Constantine the Philosopher University in Nitra, 949 74, Nitra, Slovakia
| | - Peter Lauro
- Department of Chemistry, Constantine the Philosopher University in Nitra, 949 74, Nitra, Slovakia
| | - Miriama Simunkova
- Department of Physical Chemistry, Faculty Chemical and Food Technology, Slovak University of Technology, 812 37, Bratislava, Slovakia
| | - Saleh H. Alwasel
- Zoology Department, College of Science, King Saud University,Riyadh, Saudi Arabia
| | - Ibrahim M. Alhazza
- Zoology Department, College of Science, King Saud University,Riyadh, Saudi Arabia
| | - Jan Moncol
- Department of Physical Chemistry, Faculty Chemical and Food Technology, Slovak University of Technology, 812 37, Bratislava, Slovakia
| | - Marian Valko
- Department of Physical Chemistry, Faculty Chemical and Food Technology, Slovak University of Technology, 812 37, Bratislava, Slovakia
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Srivastava T, Mishra SK, Tiwari OP, Sonkar AK, Tiwari KN, Kumar P, Dixit J, Kumar J, Singh AK, Verma P, Saini R, Singh A, Dwivedi AK. Synthesis, characterization, antimicrobial and cytotoxicity evaluation of quaternary cadmium (II)-quercetin complexes with 1,10-phenanthroline or 2,2’-bipyridine ligands. BIOTECHNOL BIOTEC EQ 2020. [DOI: 10.1080/13102818.2020.1806732] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Affiliation(s)
- Tanu Srivastava
- Department of Chemistry, SHEAT College of Pharmacy, Varanasi, Uttar Pradesh, India
| | - Sunil Kumar Mishra
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Om Prakash Tiwari
- Department of Chemistry, Varanasi College of Pharmacy, Varanasi, Uttar Pradesh, India
| | - Avinash Kumar Sonkar
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Kavindra Nath Tiwari
- Department of Botany, MMV, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Pradeep Kumar
- Department of Botany, MMV, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Jyoti Dixit
- Department of Botany, MMV, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Jitendra Kumar
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Amit Kumar Singh
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Pooja Verma
- Department of Botany, MMV, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Rajesh Saini
- Department of Botany, MMV, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Angaraj Singh
- Department of Ceramic Engineering, Indian Institute of Technology, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Ashutosh Kumar Dwivedi
- Department of Ceramic Engineering, Indian Institute of Technology, Banaras Hindu University, Varanasi, Uttar Pradesh, India
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Akinwumi KA, Jubril AJ, Olaniyan OO, Umar YY. Ethanol extract of Nigella sativa has antioxidant and ameliorative effect against nickel chloride-induced hepato-renal injury in rats. CLINICAL PHYTOSCIENCE 2020. [DOI: 10.1186/s40816-020-00205-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Nickel exposure causes hepato-renal toxicity via oxidative stress. Medicinal plants with antioxidants properties are being explored as treatment options. In this study, the effect of ethanol extract of Nigella sativa (ENS) on nickel chloride (NiCl2)-induced hepato-renal damage was evaluated by monitoring biochemical and oxidative stress markers. Additionally, the antioxidant capacity and phytochemical constituents of ENS were quantified using HPLC and GC-MS.
Result
NiCl2 significantly increased (p < 0.05) aspartate aminotransferase, creatinine, sodium ion, chloride ion and malondialdehyde levels, while antioxidant enzymes were decreased in the organs except for kidney glutathione-S-transferase when compared to the control. However, ENS exerted inhibitory effect against NiCl2 toxicity in both organs by reversing the biomarkers towards control levels. ENS has a high antioxidant capacity and is rich in antioxidants including gallic acid, quercetin, eucalyptol and levomenthol that may have accounted for the improvement of hepato-renal health in co-exposed rats.
Conclusion
Our result suggests that amelioration of nickel chloride-induced hepato-renal pathology by ethanol extract of Nigella sativa was related to its antioxidant properties. Therefore, Nigella sativa could be valuable in the management of nickel-induced toxicity.
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Zima V, Radilová K, Kožíšek M, Albiñana CB, Karlukova E, Brynda J, Fanfrlík J, Flieger M, Hodek J, Weber J, Majer P, Konvalinka J, Machara A. Unraveling the anti-influenza effect of flavonoids: Experimental validation of luteolin and its congeners as potent influenza endonuclease inhibitors. Eur J Med Chem 2020; 208:112754. [PMID: 32883638 DOI: 10.1016/j.ejmech.2020.112754] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/20/2020] [Accepted: 08/09/2020] [Indexed: 01/27/2023]
Abstract
The biological effects of flavonoids on mammal cells are diverse, ranging from scavenging free radicals and anti-cancer activity to anti-influenza activity. Despite appreciable effort to understand the anti-influenza activity of flavonoids, there is no clear consensus about their precise mode-of-action at a cellular level. Here, we report the development and validation of a screening assay based on AlphaScreen technology and illustrate its application for determination of the inhibitory potency of a large set of polyols against PA N-terminal domain (PA-Nter) of influenza RNA-dependent RNA polymerase featuring endonuclease activity. The most potent inhibitors we identified were luteolin with an IC50 of 72 ± 2 nM and its 8-C-glucoside orientin with an IC50 of 43 ± 2 nM. Submicromolar inhibitors were also evaluated by an in vitro endonuclease activity assay using single-stranded DNA, and the results were in full agreement with data from the competitive AlphaScreen assay. Using X-ray crystallography, we analyzed structures of the PA-Nter in complex with luteolin at 2.0 Å resolution and quambalarine B at 2.5 Å resolution, which clearly revealed the binding pose of these polyols coordinated to two manganese ions in the endonuclease active site. Using two distinct assays along with the structural work, we have presumably identified and characterized the molecular mode-of-action of flavonoids in influenza-infected cells.
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Affiliation(s)
- Václav Zima
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 00, Prague 2, Czech Republic; Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Gilead Sciences and IOCB Research Center, Flemingovo n. 2, 166 10, Prague 6, Czech Republic
| | - Kateřina Radilová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Gilead Sciences and IOCB Research Center, Flemingovo n. 2, 166 10, Prague 6, Czech Republic; First Faculty of Medicine, Charles University, Kateřinská 1660, 121 08, Prague 2, Czech Republic
| | - Milan Kožíšek
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Gilead Sciences and IOCB Research Center, Flemingovo n. 2, 166 10, Prague 6, Czech Republic.
| | - Carlos Berenguer Albiñana
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 00, Prague 2, Czech Republic; Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Gilead Sciences and IOCB Research Center, Flemingovo n. 2, 166 10, Prague 6, Czech Republic
| | - Elena Karlukova
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Gilead Sciences and IOCB Research Center, Flemingovo n. 2, 166 10, Prague 6, Czech Republic
| | - Jiří Brynda
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Gilead Sciences and IOCB Research Center, Flemingovo n. 2, 166 10, Prague 6, Czech Republic; Institute of Molecular Genetics of the Czech Academy of Sciences, Vídeňská 1083, 140 00, Prague 4, Czech Republic
| | - Jindřich Fanfrlík
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Gilead Sciences and IOCB Research Center, Flemingovo n. 2, 166 10, Prague 6, Czech Republic
| | - Miroslav Flieger
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 140 00, Prague 4, Czech Republic
| | - Jan Hodek
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Gilead Sciences and IOCB Research Center, Flemingovo n. 2, 166 10, Prague 6, Czech Republic
| | - Jan Weber
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Gilead Sciences and IOCB Research Center, Flemingovo n. 2, 166 10, Prague 6, Czech Republic
| | - Pavel Majer
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Gilead Sciences and IOCB Research Center, Flemingovo n. 2, 166 10, Prague 6, Czech Republic
| | - Jan Konvalinka
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Gilead Sciences and IOCB Research Center, Flemingovo n. 2, 166 10, Prague 6, Czech Republic; Department of Biochemistry, Faculty of Science, Charles University, Hlavova 8, 128 00, Prague 2, Czech Republic
| | - Aleš Machara
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 00, Prague 2, Czech Republic; Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Gilead Sciences and IOCB Research Center, Flemingovo n. 2, 166 10, Prague 6, Czech Republic.
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Unveiling the Properties of Thai Stingless Bee Propolis via Diminishing Cell Wall-Associated Cryptococcal Melanin and Enhancing the Fungicidal Activity of Macrophages. Antibiotics (Basel) 2020; 9:antibiotics9070420. [PMID: 32709077 PMCID: PMC7400477 DOI: 10.3390/antibiotics9070420] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 07/05/2020] [Accepted: 07/15/2020] [Indexed: 11/16/2022] Open
Abstract
Cryptococcus neoformans, a life-threatening human yeast pathogen, has the ability to produce melanin, which is one of the common virulence factors contributing to cryptococcal pathogenesis. This virulence factor is closely associated with the cryptococcal cell wall, specifically chitin and chitosan polysaccharides, a complex structure that is essential for maintaining cellular structure and integrity. In this study, we aim to investigate the effects of two stingless bee (SLB) propolis from Tetragonula laeviceps and Tetrigona melanoleuca against cell wall-associated melanin in C. neoformans, and its immune response in RAW 264.7 macrophage. The ethanolic extract of SLB propolis (EEP) has strongly exhibited anti-cryptococcal activity. Moreover, EEP from both sources reduced chitin/chitosan and melanin production against C. neoformans in a dose-dependent manner. Likewise, the mRNA expression level of CDA1, IPC1-PKC1 and LAC1 genes involved in the cryptococcal melanization pathway was significantly decreased at 2 mg/mL in EEP treatment. Additionally, pretreatment with EEP prior to yeast infection dramatically reduced intracellular replication of C. neoformans in RAW 264.7 macrophages in a dose-dependent manner. This study might be a new insight to use a natural powerful source, not only acting to target cell wall-associated molecules, but also being capable to explore a novel strategy by which dysregulation of these molecules leads to promote immunomodulatory activity.
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Palierse E, Przybylski C, Brouri D, Jolivalt C, Coradin T. Interactions of Calcium with Chlorogenic and Rosmarinic Acids: An Experimental and Theoretical Approach. Int J Mol Sci 2020; 21:E4948. [PMID: 32668750 PMCID: PMC7403997 DOI: 10.3390/ijms21144948] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/08/2020] [Accepted: 07/11/2020] [Indexed: 12/24/2022] Open
Abstract
Chlorogenic (CA) and rosmarinic (RA) acids are two natural bioactive hydroxycinnamic acids whose antioxidant properties can be modulated by the chelation of metal ions. In this work, the interactions of these two carboxylic phenols with calcium ions and the impact of such interactions on their antioxidant activity were investigated. UV-Vis absorbance, mass spectroscopy and 1H and 13C liquid NMR were used to identify complexes formed by CA and RA with calcium. Antioxidant activities were measured by the Bois method. Density functional theory (DFT) calculations were performed to evaluate the most stable configurations and correlated with NMR data. Taken together, these data suggest that calcium ions mainly interact with the carboxylate groups of both molecules but that this interaction modifies the reactivity of the catechol groups, especially for RA. These results highlight the complex interplay between metal chelation and antioxidant properties of natural carboxylic phenols.
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Affiliation(s)
- Estelle Palierse
- CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), Sorbonne Université, 4 place Jussieu, 75005 Paris, France;
- CNRS, Laboratoire de Réactivité de Surface (LRS), Sorbonne Université, 4 place Jussieu, 75005 Paris, France; (D.B.); (C.J.)
| | - Cédric Przybylski
- CNRS, Institut Parisien de Chimie Moléculaire (IPCM), Sorbonne Université, 4 place Jussieu, 75005 Paris, France;
| | - Dalil Brouri
- CNRS, Laboratoire de Réactivité de Surface (LRS), Sorbonne Université, 4 place Jussieu, 75005 Paris, France; (D.B.); (C.J.)
| | - Claude Jolivalt
- CNRS, Laboratoire de Réactivité de Surface (LRS), Sorbonne Université, 4 place Jussieu, 75005 Paris, France; (D.B.); (C.J.)
| | - Thibaud Coradin
- CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), Sorbonne Université, 4 place Jussieu, 75005 Paris, France;
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40
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Sadeghi S, Hosseinpour-Zaryabi M. A sensitive fluorescent probe based on dithizone-capped ZnS quantum dots for quercetin determination in biological samples. LUMINESCENCE 2020; 35:1391-1401. [PMID: 32592271 DOI: 10.1002/bio.3903] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 06/18/2020] [Accepted: 06/23/2020] [Indexed: 11/09/2022]
Abstract
A simple turn on/off fluorescence approach based on dithizone-capped ZnS quantum dots (ZnS@DZ QDs) with the help of lead ions as a fluorescent probe for the quantitative determination of quercetin is reported. The interaction of lead ions with dithizone led to the formation of a rigid structure on the surface of ZnS@DZ QDs and turned on the fluorescence intensity of the QDs. After addition of quercetin to this probe and interaction with lead ions, the fluorescence emission turned off. Concerning the quenching fluorescence intensity of ZnS@DZ QDs/Pb2+ QDs probe induced by the target, under the optimum conditions, the probe enabled detection of quercetin in the concentration range from 0.54 μM to 21.7 μM with a correlation coefficient of 0.993 and detection limit of 0.25 μM. The present probe was applied successfully to the determine quercetin as a nutritional biomarker in human serum and 24-h urine samples.
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Affiliation(s)
- Susan Sadeghi
- Department of Chemistry, Faculty of Science, University of Birjand, Birjand, Iran
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41
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Rivière G, Oueslati S, Gayral M, Créchet JB, Nhiri N, Jacquet E, Cintrat JC, Giraud F, van Heijenoort C, Lescop E, Pethe S, Iorga BI, Naas T, Guittet E, Morellet N. NMR Characterization of the Influence of Zinc(II) Ions on the Structural and Dynamic Behavior of the New Delhi Metallo-β-Lactamase-1 and on the Binding with Flavonols as Inhibitors. ACS OMEGA 2020; 5:10466-10480. [PMID: 32426604 PMCID: PMC7226869 DOI: 10.1021/acsomega.0c00590] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 04/15/2020] [Indexed: 05/22/2023]
Abstract
New Delhi metallo-β-lactamase-1 (NDM-1) has recently emerged as a global threat because of its ability to confer resistance to all common β-lactam antibiotics. Understanding the molecular basis of β-lactam hydrolysis by NDM is crucial for designing NDM inhibitors or β-lactams resistant to their hydrolysis. In this study, for the first time, NMR was used to study the influence of Zn(II) ions on the dynamic behavior of NDM-1. Our results highlighted that the binding of Zn(II) in the NDM-1 active site induced several structural and dynamic changes on active site loop 2 (ASL2) and L9 loops and on helix α2. We subsequently studied the interaction of several flavonols: morin, quercetin, and myricetin were identified as natural and specific inhibitors of NDM-1. Quercetin conjugates were also synthesized in an attempt to increase the solubility and bioavailability. Our NMR investigations on NDM-1/flavonol interactions highlighted that both Zn(II) ions and the residues of the NDM-1 ASL1, ASL2, and ASL4 loops are involved in the binding of flavonols. This is the first NMR interaction study of NDM-1/inhibitors, and the models generated using HADDOCK will be useful for the rational design of more active inhibitors, directed against NDM-1.
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Affiliation(s)
- Gwladys Rivière
- Institut
de Chimie des Substances Naturelles, CNRS UPR 2301, Université
Paris-Sud, Université Paris-Saclay, LabEx LERMIT, 1 avenue de la Terrasse, 91190 Gif-sur-Yvette, France
| | - Saoussen Oueslati
- EA7361
“Structure, Dynamic, Function and Expression of Broad Spectrum
β-Lactamases”, Faculty of Medicine, Université Paris-Sud, Université Paris-Saclay, LabEx LERMIT, Le Kremlin-Bicêtre, France
| | - Maud Gayral
- Institut
de Chimie Moléculaire et des Matériaux d’Orsay
(ICMMO), CNRS, Université Paris Sud, Université Paris-Saclay, 15 rue Georges Clemenceau, 91405 Orsay Cedex, France
| | | | - Naïma Nhiri
- Institut
de Chimie des Substances Naturelles, CNRS UPR 2301, Université
Paris-Sud, Université Paris-Saclay, LabEx LERMIT, 1 avenue de la Terrasse, 91190 Gif-sur-Yvette, France
| | - Eric Jacquet
- Institut
de Chimie des Substances Naturelles, CNRS UPR 2301, Université
Paris-Sud, Université Paris-Saclay, LabEx LERMIT, 1 avenue de la Terrasse, 91190 Gif-sur-Yvette, France
| | - Jean-Christophe Cintrat
- Service
de Chimie Bio-organique et Marquage (SCBM), CEA, Université Paris-Saclay, LabEx LERMIT, 91191 Gif/Yvette, France
| | - François Giraud
- Institut
de Chimie des Substances Naturelles, CNRS UPR 2301, Université
Paris-Sud, Université Paris-Saclay, LabEx LERMIT, 1 avenue de la Terrasse, 91190 Gif-sur-Yvette, France
| | - Carine van Heijenoort
- Institut
de Chimie des Substances Naturelles, CNRS UPR 2301, Université
Paris-Sud, Université Paris-Saclay, LabEx LERMIT, 1 avenue de la Terrasse, 91190 Gif-sur-Yvette, France
| | - Ewen Lescop
- Institut
de Chimie des Substances Naturelles, CNRS UPR 2301, Université
Paris-Sud, Université Paris-Saclay, LabEx LERMIT, 1 avenue de la Terrasse, 91190 Gif-sur-Yvette, France
| | - Stéphanie Pethe
- EA7361
“Structure, Dynamic, Function and Expression of Broad Spectrum
β-Lactamases”, Faculty of Medicine, Université Paris-Sud, Université Paris-Saclay, LabEx LERMIT, Le Kremlin-Bicêtre, France
| | - Bogdan I. Iorga
- Institut
de Chimie des Substances Naturelles, CNRS UPR 2301, Université
Paris-Sud, Université Paris-Saclay, LabEx LERMIT, 1 avenue de la Terrasse, 91190 Gif-sur-Yvette, France
| | - Thierry Naas
- EA7361
“Structure, Dynamic, Function and Expression of Broad Spectrum
β-Lactamases”, Faculty of Medicine, Université Paris-Sud, Université Paris-Saclay, LabEx LERMIT, Le Kremlin-Bicêtre, France
- . Phone:(33)145212019 or (33)145213030. Fax: (33)145216340
| | - Eric Guittet
- Institut
de Chimie des Substances Naturelles, CNRS UPR 2301, Université
Paris-Sud, Université Paris-Saclay, LabEx LERMIT, 1 avenue de la Terrasse, 91190 Gif-sur-Yvette, France
| | - Nelly Morellet
- Institut
de Chimie des Substances Naturelles, CNRS UPR 2301, Université
Paris-Sud, Université Paris-Saclay, LabEx LERMIT, 1 avenue de la Terrasse, 91190 Gif-sur-Yvette, France
- . Phone:(33)169823762. Fax: (33)169823784
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42
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Kinetic Studies on Radical Scavenging Activity of Kaempferol Decreased by Sn(II) Binding. Molecules 2020; 25:molecules25081975. [PMID: 32340303 PMCID: PMC7221808 DOI: 10.3390/molecules25081975] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/11/2020] [Accepted: 04/14/2020] [Indexed: 12/13/2022] Open
Abstract
Sn(II) binds to kaempferol (HKaem, 3,4′,5,7-tetrahydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one) at the 3,4-site forming [Sn(II)(Kaem)2] complex in ethanol. DPPH• scavenging efficiency of HKaem is dramatically decreased by SnCl2 coordination due to formation of acid inhibiting deprotonation of HKaem as ligands and thus reduces the radical scavenging activity of the complex via a sequential proton-loss electron transfer (SPLET) mechanism. Moderate decreases in the radical scavenging of HKaem are observed by Sn(CH3COO)2 coordination and by contact between Sn and HKaem, in agreement with the increase in the oxidation potential of the complex compared to HKaem, leading to a decrease in antioxidant efficiency for fruits and vegetables with Sn as package materials.
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43
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Zhang Z, Dai Q, Zhang Y, Zhuang H, Wang E, Xu Q, Ma L, Wu C, Huan Z, Guo F, Chang J. Design of a Multifunctional Biomaterial Inspired by Ancient Chinese Medicine for Hair Regeneration in Burned Skin. ACS APPLIED MATERIALS & INTERFACES 2020; 12:12489-12499. [PMID: 32118402 DOI: 10.1021/acsami.9b22769] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In deep burn injuries, the dermis of the skin is often severely damaged, and hair follicles are also lost and lose the potential for regeneration. Therefore, the development of wound dressings that promote hair follicle regeneration has important clinical significance. In this study, inspired by an ancient Chinese medicine prescription, a novel fibrous membrane (P/Qu/Cup; P, PCL; Qu, quercetin; Cup, cuprorivaite, CaCuSi4O10) containing quercetin-copper (Qu-Cu) chelates was fabricated by using quercetin and a highly bioactive bioceramic (CaCuSi4O10) incorporated in PCL/gelatin electrospun fibers. The fibrous membrane can effectively release Qu and Cu ions to induce proliferation, migration, and differentiation of skin and hair follicle related cells, and the Qu, Cu ions, and Si ions released from the composite membrane revealed synergistic activity to stimulate hair follicle regeneration and wound healing. Our study demonstrated that the analysis of the common components in ancient Chinese prescription is an effective approach to design novel bioactive materials for regenerative medicine.
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Affiliation(s)
- Zhaowenbin Zhang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, People's Republic of China
| | - Qiuxia Dai
- Department of Plastic Surgery, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai 200233, PR China
| | - Yu Zhang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, People's Republic of China
| | - Hui Zhuang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, People's Republic of China
| | - Endian Wang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, People's Republic of China
| | - Qing Xu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, People's Republic of China
| | - Lingling Ma
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, People's Republic of China
| | - Chengtie Wu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, People's Republic of China
| | - Zhiguang Huan
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, People's Republic of China
| | - Feng Guo
- Department of Plastic Surgery, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai 200233, PR China
| | - Jiang Chang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, People's Republic of China
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Muñoz VA, Dimarco Palencia FCD, Sancho MI, Miskoski S, García NA, Ferrari GV, Montaña MP. Experimental and Theoretical Study of the Stability of the Complex Fisetin-Cu(II) and A Comparative Study of Free Ligand and Complex Interaction with Molecular Singlet Oxygen. Photochem Photobiol 2020; 96:815-825. [PMID: 31912514 DOI: 10.1111/php.13213] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 12/19/2019] [Indexed: 12/20/2022]
Abstract
In this work, the flavonol fisetin was selected in order to study its reactivity against Cu(II), a metal ion of interest in biological media and industry. The stoichiometry and apparent formation constant of the complex in ethanolic medium at 25°C were evaluated using spectrophotometric techniques. The resulting stoichiometry was a 1:1 ligand:metal complex, and a log K = 5.17 ± 0.12 was determined. Since two possible chelation sites can be proposed for the complex formation, quantum chemistry calculations were performed on these structures. Calculations suggest that the hydroxyl-keto site is more stable for the complex formation than the catechol site. Flavonoids could exert protection against oxidative damage caused by reactive oxygen species, and this biological activity could be affected by chelation with metal ions. This led us to perform a study on the interaction of both, free flavonoid and complex, with reactive oxygen species. Our results showed both compounds quench molecular singlet oxygen photogenerated with visible light, mainly in a physical fashion. In order to analyze a possible protective effect of flavonoid and its complex against oxidative damage in biological environments, the amino acid tryptophan was selected as a model oxidation system. Free flavonoid does not have a marked protective effect, whereas its complex showed a relevant protective effect.
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Affiliation(s)
- Vanesa A Muñoz
- Facultad de Química, Bioquímica y Farmacia, Área de Química Física, Instituto de Química de San Luis INQUISAL (CONICET-UNSL), San Luis, Argentina
| | - Frida C D Dimarco Palencia
- Facultad de Química, Bioquímica y Farmacia, Área de Química Física, Instituto de Química de San Luis INQUISAL (CONICET-UNSL), San Luis, Argentina
| | - Matias I Sancho
- Facultad de Química, Bioquímica y Farmacia, Área de Química Física, Instituto Multidisciplinario de Investigaciones Biológicas San Luis IMIBIO-SL (CONICET-UNSL), San Luis, Argentina
| | - Sandra Miskoski
- Departamento de Química, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Argentina
| | - Norman A García
- Departamento de Química, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Argentina
| | - Gabriela V Ferrari
- Facultad de Química, Bioquímica y Farmacia, Área de Química Física, Instituto de Química de San Luis INQUISAL (CONICET-UNSL), San Luis, Argentina
| | - María Paulina Montaña
- Facultad de Química, Bioquímica y Farmacia, Área de Química Física, Instituto de Química de San Luis INQUISAL (CONICET-UNSL), San Luis, Argentina
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45
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Rajkumar C, Nehru R, Chen SM, Kim H, Arumugam S, Sankar R. Electrosynthesis of carbon aerogel-modified AuNPs@quercetin via an environmentally benign method for hydrazine (HZ) and hydroxylamine (HA) detection. NEW J CHEM 2020. [DOI: 10.1039/c9nj05360c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An ultrasensitive electrochemical sensor fabricated using a hydrothermal and environmentally benign methods for the detection of environmental pollutions, namely, hydrazine (HZ) and hydroxylamine (HA) has been described.
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Affiliation(s)
- Chellakannu Rajkumar
- School of Materials Science and Engineering
- Yeungnam University
- Gyeongsan 712 749
- Republic of Korea
- Institute of Physics
| | - Raja Nehru
- Institute of Physics
- Academia Sinica
- Taipei 10617
- Taiwan
- Centre for Condensed Matter Sciences
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology
- National Taipei University of Technology
- Taipei 10608
- Taiwan
| | - Haekyoung Kim
- School of Materials Science and Engineering
- Yeungnam University
- Gyeongsan 712 749
- Republic of Korea
| | - S. Arumugam
- Center for High Pressure Research
- Bharathidasan University
- Tiruchirappalli-620 024
- India
| | - Raman Sankar
- Institute of Physics
- Academia Sinica
- Taipei 10617
- Taiwan
- Centre for Condensed Matter Sciences
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46
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Shaghaghi M, Rashtbari S, Vejdani S, Dehghan G, Jouyban A, Yekta R. Exploring the interactions of a Tb(III)–quercetin complex with serum albumins (HSA and BSA): spectroscopic and molecular docking studies. LUMINESCENCE 2019; 35:512-524. [DOI: 10.1002/bio.3757] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 11/22/2019] [Accepted: 12/04/2019] [Indexed: 12/28/2022]
Affiliation(s)
- Masoomeh Shaghaghi
- Department of ChemistryPayame Noor University P. O. Box 19395‐3697 Tehran Iran
| | - Samaneh Rashtbari
- Department of Biology, Faculty of Natural SciencesUniversity of Tabriz Tabriz Iran
| | - Samira Vejdani
- Department of ChemistryPayame Noor University P. O. Box 19395‐3697 Tehran Iran
| | - Gholamreza Dehghan
- Department of Biology, Faculty of Natural SciencesUniversity of Tabriz Tabriz Iran
| | - Abolghasem Jouyban
- Pharmaceutical Analysis Research Center and Faculty of PharmacyTabriz University of Medical Sciences Tabriz Iran
| | - Reza Yekta
- Department of Biology, Faculty of Natural SciencesUniversity of Tabriz Tabriz Iran
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47
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Bis(N′-(3-chlorobenzoyl)isonicotinohydrazide)iron(III) Complex. MOLBANK 2019. [DOI: 10.3390/m1101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The bis(N′-(3-chlorobenzoyl)isonicotinohydrazide)iron(III) complex was synthesised from N′-(3-chlorobenzoyl)isonicotinohydrazide and iron(III) metal by reflux in an ethanol solution. The title compound was characterised by Fourier-transform infrared spectroscopy (FTIR) spectroscopy, differential thermal analysis/thermogravimetric analysis (DTA/TGA) and UV-visible spectroscopy. The results indicate that coordination of the iron(III) ion to the ligand increased its thermal stability.
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48
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Khalifa ME, Mortada WI, El-defrawy MM, Awad AA. Selective separation of gadolinium from a series of f-block elements by cloud point extraction and its application for analysis of real samples. Microchem J 2019. [DOI: 10.1016/j.microc.2019.104214] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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49
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Jomová K, Hudecova L, Lauro P, Simunkova M, Alwasel SH, Alhazza IM, Valko M. A Switch between Antioxidant and Prooxidant Properties of the Phenolic Compounds Myricetin, Morin, 3',4'-Dihydroxyflavone, Taxifolin and 4-Hydroxy-Coumarin in the Presence of Copper(II) Ions: A Spectroscopic, Absorption Titration and DNA Damage Study. Molecules 2019; 24:E4335. [PMID: 31783535 PMCID: PMC6930463 DOI: 10.3390/molecules24234335] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 11/18/2019] [Accepted: 11/25/2019] [Indexed: 12/13/2022] Open
Abstract
The beneficial effects of polyphenols, predominantly in the context of oxidative stress-related diseases such as cancer, cardiovascular diseases and neurological conditions including Alzheimer's and Parkinson's diseases, have been documented by a number of papers and reviews. The antioxidant/prooxidant properties of phenolic compounds are related mainly to the number and positions of hydroxyl groups and to their redox metal (Cu, Fe) chelating capacity. In this work we studied structurally distinct phenolic molecules such as myricetin, morin, 3',4'-dihydroxy-flavone, taxifolin and 4-hydroxycoumarin, either alone or as interacting with Cu2+ ions. EPR and UV-Vis spectroscopy confirmed that the effective binding of cupric ions to phenolic compounds requires the presence of the 3-OH and 4-CO groups on the flavonoid C ring and unsaturated C2-C3 bond of the C-ring, which permits through-conjugation with the B-ring. An ABTS assay revealed that radical scavenging activities of phenolic compounds are related to their number of hydroxyl groups, planarity of the molecular skeleton, extent of delocalization and they decrease in the order: myricetin > morin > 3',4'-dihydroxyflavone ~ 4-hydroxy coumarin > taxifolin. Absorption titrations indicate that copper ions can modulate the DNA binding affinity of flavonoids via the formation of their Cu-chelates. Gel electrophoresis measurements indicated that the protective effect of the phenolic compounds decreases in the order: 3',4'-dihydroxyflavone > 4-OH coumarin > morin > taxifolin ~ myricetin. This can be explained by the fact that myricetin, taxifolin and morin form stable Cu(II) complexes capable of causing DNA damage via interaction with DNA and ROS formation via the Fenton reaction. Application of ROS scavengers revealed the formation of singlet oxygen, superoxide and hydroxyl radicals and their concerted synergistic effect on the DNA. The overall results suggest that the most pronounced DNA damage has been observed for flavonoids containing higher number of hydroxyl groups (including 3-OH group of the C ring), such as myricetin (six hydroxyl groups), morin and taxifolin (five hydroxyl groups) in the presence of Cu(II) ions. The proposed mechanism of action by which Cu(II) complexes of myricetin, morin and taxifolin interact with DNA predispose these substances to act as potential anticancer agents. The anticancer activity of phenolic compounds can be explained by their moderate prooxidant properties, which can boost ROS formation and kill cancer cells. Alternatively, slight prooxidant properties may activate antioxidant systems, including antioxidant enzymes and low molecular antioxidants such as glutathione and thus act as preventive anticancer agents.
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Affiliation(s)
- Klaudia Jomová
- Department of Chemistry, Constantine the Philosopher University in Nitra, 949 74 Nitra, Slovakia; (K.J.); (L.H.); (P.L.)
| | - Lenka Hudecova
- Department of Chemistry, Constantine the Philosopher University in Nitra, 949 74 Nitra, Slovakia; (K.J.); (L.H.); (P.L.)
| | - Peter Lauro
- Department of Chemistry, Constantine the Philosopher University in Nitra, 949 74 Nitra, Slovakia; (K.J.); (L.H.); (P.L.)
| | - Miriama Simunkova
- Faculty Chemical and Food Technology, Slovak University of Technology, 812 37 Bratislava, Slovakia;
| | - Saleh H. Alwasel
- King Saud University, Zoology Department, College of Science, Riyadh 11451, Saudi Arabia (I.M.A.)
| | - Ibrahim M. Alhazza
- King Saud University, Zoology Department, College of Science, Riyadh 11451, Saudi Arabia (I.M.A.)
| | - Marian Valko
- Faculty Chemical and Food Technology, Slovak University of Technology, 812 37 Bratislava, Slovakia;
- King Saud University, Zoology Department, College of Science, Riyadh 11451, Saudi Arabia (I.M.A.)
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Orlando G, Ferrante C, Zengin G, Sinan KI, Bene K, Diuzheva A, Jekő J, Cziáky Z, Simone SD, Recinella L, Chiavaroli A, Leone S, Brunetti L, Picot-Allain CMN, Mahomoodally MF, Menghini L. Qualitative Chemical Characterization and Multidirectional Biological Investigation of Leaves and Bark Extracts of Anogeissus leiocarpus (DC.) Guill. & Perr. (Combretaceae). Antioxidants (Basel) 2019; 8:antiox8090343. [PMID: 31480498 PMCID: PMC6770311 DOI: 10.3390/antiox8090343] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 08/17/2019] [Accepted: 08/22/2019] [Indexed: 12/11/2022] Open
Abstract
Anogeissus leiocarpus (DC.) Guill. & Perr. (Combretaceae) has a long history of use by folk populations for the management of multiple human ailments. Based on the published literature, there has been no attempt to conduct a comparative assessment of the biological activity and the phytochemical profiles of the leaves and stem bark of A. leiocarpus extracted using methanol, ethyl acetate, and water. By high-performance liquid chromatography with electrospray ionization mass spectrometric detection (HPLC-ESI-MSn) analysis, quinic, shikimic, gallic, and protocatechuic acids were tentatively identified from all the extracts, while chlorogenic, caffeic, ferulic, and dodecanedioic acids were only characterised from the leaves extracts. Additionally, a pharmacological study was carried out to evaluate potential protective effects that are induced by the extracts in rat colon and colon cancer HCT116 cell line. In general, the methanol and water extracts of A. leiocarpus leaves and stem bark showed potent radical scavenging and reducing properties. It was noted that the stem bark extracts were more potent antioxidants as compared to the leaves extracts. The methanol extract of A. leiocarpus leaves showed the highest acetyl (4.68 mg galantamine equivalent/g) and butyryl (4.0 mg galantamine equivalent/g) cholinesterase inhibition. Among ethyl acetate extracts, the pharmacological investigation suggested stem bark ethyl acetate extracts to be the most promising. This extract revealed ability to protect rat colon from lipopolysaccharide-induced oxidative stress, without exerting promoting effects on HCT116 cell line viability and migration. As a conclusion, A. leiocarpus represents a potential source of bioactive compounds in the development of novel therapeutic agents.
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Affiliation(s)
- Giustino Orlando
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, 66100 Chieti, Italy
| | - Claudio Ferrante
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, 66100 Chieti, Italy.
| | - Gokhan Zengin
- Department of Biology, Faculty of Science, Selcuk University, Konya 42130, Turkey.
| | | | - Kouadio Bene
- Laboratoire de Botanique et Phytothérapie, Unité de Formation et de Recherche Sciences de la Nature, Université Nangui Abrogoua, 02 BP 801 Abidjan 02, Ivory Coast
| | - Alina Diuzheva
- Department of Forest Protection and Entomology, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague 16500, Czech Republic
| | - József Jekő
- Agricultural and Molecular Research and Service Institute, University of Nyíregyháza, Nyíregyháza 4400, Hungary
| | - Zoltán Cziáky
- Agricultural and Molecular Research and Service Institute, University of Nyíregyháza, Nyíregyháza 4400, Hungary
| | - Simonetta Di Simone
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, 66100 Chieti, Italy
| | - Lucia Recinella
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, 66100 Chieti, Italy
| | - Annalisa Chiavaroli
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, 66100 Chieti, Italy
| | - Sheila Leone
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, 66100 Chieti, Italy
| | - Luigi Brunetti
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, 66100 Chieti, Italy
| | | | | | - Luigi Menghini
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, 66100 Chieti, Italy
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