Gallic acid-coated silver nanoparticles as perspective drug nanocarriers: bioanalytical study

The ability of silver nanoparticles (AgNPs) to be used as drug nanocarriers has helped rapidly to invent novel strategies to treat diseases, such as cancer. The nanoparticles may offer a valuable tool to novel pH-sensitive drug delivery systems in the present scenario because of their undergoing mec...

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Veröffentlicht in:Analytical and bioanalytical chemistry 2022-07, Vol.414 (18), p.5493-5505
Hauptverfasser: Nemčeková, Katarína, Svitková, Veronika, Sochr, Jozef, Gemeiner, Pavol, Labuda, Ján
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container_issue 18
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container_title Analytical and bioanalytical chemistry
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creator Nemčeková, Katarína
Svitková, Veronika
Sochr, Jozef
Gemeiner, Pavol
Labuda, Ján
description The ability of silver nanoparticles (AgNPs) to be used as drug nanocarriers has helped rapidly to invent novel strategies to treat diseases, such as cancer. The nanoparticles may offer a valuable tool to novel pH-sensitive drug delivery systems in the present scenario because of their undergoing mechanisms associated with the regulated dissolution, aggregation, and generation of oxygen radicals as well. These processes could be monitored by electrochemical (bio)sensors that are less money and time-consuming compared to other analytical approaches, however, with comparable analytical performance. In this paper, synthesized and microscopically characterized gallic acid-coated AgNPs (GA-AgNPs) are investigated using spectral and electrochemical methods. To investigate the Ag + release, a 21-day ageing experiment is performed spectrophotometrically, finding that the peak maximum of GA-AgNPs spectra diminished by 24.5%. The highest Ag + content was electrochemically determined in the supernatant solution after centrifugation (6.97 μmol·L −1 ), while no significant concentration of silver ions in solution after redispersion was observed (1.26 μmol·L −1 ). The interaction experiment indicates a stabilization of GA-AgNPs in the presence of long-chain dsDNA as well as a mutual electrostatic interaction with DNA sugar-phosphate backbone. This interaction mechanism is confirmed by FTIR analysis, showing a shift (1049 to 1061 cm −1 and 913 to 964 cm −1 ) specific to DNA phosphate bands. Finally, doxorubicin-loaded GA-AgNPs are monitored for the specific drug release in the physiological and more reactive weakly acidic microenvironment. Hereby, electrochemical (bio)sensing of GA-AgNPs undergoing mechanisms shows a huge potential to be used for monitoring of drug delivery systems at cancer therapy. Graphical abstract
doi_str_mv 10.1007/s00216-022-03955-2
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The nanoparticles may offer a valuable tool to novel pH-sensitive drug delivery systems in the present scenario because of their undergoing mechanisms associated with the regulated dissolution, aggregation, and generation of oxygen radicals as well. These processes could be monitored by electrochemical (bio)sensors that are less money and time-consuming compared to other analytical approaches, however, with comparable analytical performance. In this paper, synthesized and microscopically characterized gallic acid-coated AgNPs (GA-AgNPs) are investigated using spectral and electrochemical methods. To investigate the Ag + release, a 21-day ageing experiment is performed spectrophotometrically, finding that the peak maximum of GA-AgNPs spectra diminished by 24.5%. The highest Ag + content was electrochemically determined in the supernatant solution after centrifugation (6.97 μmol·L −1 ), while no significant concentration of silver ions in solution after redispersion was observed (1.26 μmol·L −1 ). The interaction experiment indicates a stabilization of GA-AgNPs in the presence of long-chain dsDNA as well as a mutual electrostatic interaction with DNA sugar-phosphate backbone. This interaction mechanism is confirmed by FTIR analysis, showing a shift (1049 to 1061 cm −1 and 913 to 964 cm −1 ) specific to DNA phosphate bands. Finally, doxorubicin-loaded GA-AgNPs are monitored for the specific drug release in the physiological and more reactive weakly acidic microenvironment. Hereby, electrochemical (bio)sensing of GA-AgNPs undergoing mechanisms shows a huge potential to be used for monitoring of drug delivery systems at cancer therapy. 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The nanoparticles may offer a valuable tool to novel pH-sensitive drug delivery systems in the present scenario because of their undergoing mechanisms associated with the regulated dissolution, aggregation, and generation of oxygen radicals as well. These processes could be monitored by electrochemical (bio)sensors that are less money and time-consuming compared to other analytical approaches, however, with comparable analytical performance. In this paper, synthesized and microscopically characterized gallic acid-coated AgNPs (GA-AgNPs) are investigated using spectral and electrochemical methods. To investigate the Ag + release, a 21-day ageing experiment is performed spectrophotometrically, finding that the peak maximum of GA-AgNPs spectra diminished by 24.5%. The highest Ag + content was electrochemically determined in the supernatant solution after centrifugation (6.97 μmol·L −1 ), while no significant concentration of silver ions in solution after redispersion was observed (1.26 μmol·L −1 ). The interaction experiment indicates a stabilization of GA-AgNPs in the presence of long-chain dsDNA as well as a mutual electrostatic interaction with DNA sugar-phosphate backbone. This interaction mechanism is confirmed by FTIR analysis, showing a shift (1049 to 1061 cm −1 and 913 to 964 cm −1 ) specific to DNA phosphate bands. Finally, doxorubicin-loaded GA-AgNPs are monitored for the specific drug release in the physiological and more reactive weakly acidic microenvironment. Hereby, electrochemical (bio)sensing of GA-AgNPs undergoing mechanisms shows a huge potential to be used for monitoring of drug delivery systems at cancer therapy. 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The highest Ag + content was electrochemically determined in the supernatant solution after centrifugation (6.97 μmol·L −1 ), while no significant concentration of silver ions in solution after redispersion was observed (1.26 μmol·L −1 ). The interaction experiment indicates a stabilization of GA-AgNPs in the presence of long-chain dsDNA as well as a mutual electrostatic interaction with DNA sugar-phosphate backbone. This interaction mechanism is confirmed by FTIR analysis, showing a shift (1049 to 1061 cm −1 and 913 to 964 cm −1 ) specific to DNA phosphate bands. Finally, doxorubicin-loaded GA-AgNPs are monitored for the specific drug release in the physiological and more reactive weakly acidic microenvironment. Hereby, electrochemical (bio)sensing of GA-AgNPs undergoing mechanisms shows a huge potential to be used for monitoring of drug delivery systems at cancer therapy. 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subjects Aging
Analytical Chemistry
Biochemistry
Cancer
Centrifugation
Characterization and Evaluation of Materials
Chemical sensors
Chemistry
Chemistry and Materials Science
Deoxyribonucleic acid
DNA
Doxorubicin
Drug delivery
Drug delivery systems
Drugs
Electrochemistry
Electrostatic properties
Food Science
Gallic acid
Health aspects
Laboratory Medicine
Methods
Microenvironments
Monitoring/Environmental Analysis
Nanoparticles
pH effects
Promising Early-Career (Bio)Analytical Researchers
Research Paper
Silver
Spectrophotometry
Vehicles
title Gallic acid-coated silver nanoparticles as perspective drug nanocarriers: bioanalytical study
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