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Zhuang QQ, Zhang ZS, Zheng TJ, Lu LY, Lin MT, Yang JL, Deng HH, Xu YY, Chen W. Alkaline phosphatase-activated prodrug system based on a bifunctional CuO NP tandem nanoenzyme for on-demand bacterial inactivation and wound disinfection. J Nanobiotechnology 2024; 22:485. [PMID: 39138462 PMCID: PMC11320994 DOI: 10.1186/s12951-024-02751-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 08/02/2024] [Indexed: 08/15/2024] Open
Abstract
Nanozymes are promising antimicrobials, as they produce reactive oxygen species (ROS). However, the intrinsic lack of selectivity of ROS in distinguishing normal flora from pathogenic bacteria deprives nanozymes of the necessary selectivities of ideal antimicrobials. Herein, we exploit the physiological conditions of bacteria (high alkaline phosphatase (ALP) expression) using a novel CuO nanoparticle (NP) nanoenzyme system to initiate an ALP-activated ROS prodrug system for use in the on-demand precision killing of bacteria. The prodrug strategy involves using 2-phospho-L-ascorbic acid trisodium salt (AAP) that catalyzes the ALP in pathogenic bacteria to generate ascorbic acid (AA), which is converted by the CuO NPs, with intrinsic ascorbate oxidase- and peroxidase-like activities, to produce ROS. Notably, the prodrug system selectively kills Escherichia coli (pathogenic bacteria), with minimal influence on Staphylococcus hominis (non-pathogenic bacteria) due to their different levels of ALP expression. Compared to the CuO NPs/AA system, which generally depletes ROS during storage, CuO NPs/AAP exhibits a significantly higher stability without affecting its antibacterial activity. Furthermore, a rat model is used to indicate the applicability of the CuO NPs/AAP fibrin gel in wound disinfection in vivo with negligible side effects. This study reveals the therapeutic precision of this bifunctional tandem nanozyme platform against pathogenic bacteria in ALP-activated conditions.
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Affiliation(s)
- Quan-Quan Zhuang
- Department of Pharmacy, Affiliated Quanzhou First Hospital of Fujian Medical University, Quanzhou, 362000, China
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, School of Pharmacy, Fujian Medical University, Fuzhou, 350004, China
| | - Zhi-Shan Zhang
- Department of Laboratory Medicine, Affiliated Quanzhou First Hospital of Fujian Medical University, Quanzhou, 362000, China
| | - Ting-Jin Zheng
- Department of Laboratory Medicine, Affiliated Quanzhou First Hospital of Fujian Medical University, Quanzhou, 362000, China
| | - Lin-Yan Lu
- Department of Pharmacy, Affiliated Quanzhou First Hospital of Fujian Medical University, Quanzhou, 362000, China
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, School of Pharmacy, Fujian Medical University, Fuzhou, 350004, China
| | - Meng-Ting Lin
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, School of Pharmacy, Fujian Medical University, Fuzhou, 350004, China
| | - Jia-Lin Yang
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, School of Pharmacy, Fujian Medical University, Fuzhou, 350004, China
| | - Hao-Hua Deng
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, School of Pharmacy, Fujian Medical University, Fuzhou, 350004, China.
| | - Ying-Ying Xu
- Department of Pharmaceutics, School of Pharmacy, Fujian Medical University, Fuzhou, 350004, China.
| | - Wei Chen
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, School of Pharmacy, Fujian Medical University, Fuzhou, 350004, China.
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Effects of five extraction methods on total content, composition, and stability of flavonoids in jujube. Food Chem X 2022; 14:100287. [PMID: 35313650 PMCID: PMC8933822 DOI: 10.1016/j.fochx.2022.100287] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 03/13/2022] [Accepted: 03/14/2022] [Indexed: 11/21/2022] Open
Abstract
Five methods of extracting flavonoids from jujube were compared in different aspects. The extraction methods can significantly influence the flavonoid compositions. DES-UAE method had outstanding ability to maintain the stability of flavonoids. DES-UAE is an efficient and green method for extracting flavonoids from jujube.
The present study investigated the effects of different extraction methods including water-water bath (W-WB), ethanol-water bath (E-WB), deep eutectic solvent (DES) combined with ultrasound-assisted extraction (DES-UAE), microwave-assisted extraction (DES-MAE), and enzyme-assisted extraction (DES-EAE) on flavonoids (total flavonoid content, flavonoid composition, and stability) in jujube. The highest total flavonoid content of 8.03 mg/g was obtained by the DES-MAE extraction. Fifteen types of flavonoids were identified from jujube. The amount of rutin produced by the E-WB and DES-UAE methods was 66.88 ± 1.58 μg/g and 45.23 ± 3.22 μg/g, respectively. The retention of flavonoids in DES-UAE extracts were 98.15 ± 0.51%, 64.25 ± 2.21% after 2 h of high temperature treatment at 90 °C and 21 days of dark storage, respectively. The flavonoids extracted by different methods were suitable for dark storage under different light contrasts, where the retention of flavonoids extracted by DES-UAE method was 86.44 ± 2.45%. In conclusion, DES-UAE would be an efficient method for flavonoid extraction from jujube.
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Ongkowijoyo P, Luna-Vital DA, Gonzalez de Mejia E. Extraction techniques and analysis of anthocyanins from food sources by mass spectrometry: An update. Food Chem 2018; 250:113-126. [PMID: 29412900 DOI: 10.1016/j.foodchem.2018.01.055] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 01/04/2018] [Accepted: 01/06/2018] [Indexed: 12/21/2022]
Abstract
This article reviews recent developments in methods of sample preparation and analytical methodologies for the quantification of anthocyanins and their extraction from food sources. Various methods for sample extraction and purification are highlighted and evaluated. The use of UV-diode array, along with improved liquid chromatography (LC) and mass spectrometry (MS) and/or the combination of both methods have facilitated the identification of analytes. The use of one-dimensional and two-dimensional HPLC has significantly improved resolution with a shorter amount of time. Other LC × LC combinations to improve orthogonality are also discussed. The most efficient anthocyanin extraction method from food sources is pressurized liquid extraction. Moreover, electrospray ionization (ESI) and MS2/time-of-flight are currently the most popular instruments used for identification of anthocyanins; being positive mode of ESI the most widely used procedure for anthocyanin identification. Several databases for mass spectrometry polyphenol identification have been described for reference.
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Affiliation(s)
- Paulina Ongkowijoyo
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, IL 61801, United States; School of Chemical Sciences, University of Illinois at Urbana-Champaign, IL 61801, United States
| | - Diego A Luna-Vital
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, IL 61801, United States
| | - Elvira Gonzalez de Mejia
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, IL 61801, United States.
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Szultka M, Buszewska-Forajta M, Kaliszan R, Buszewski B. Determination of ascorbic acid and its degradation products by high-performance liquid chromatography-triple quadrupole mass spectrometry. Electrophoresis 2014; 35:585-92. [PMID: 24469997 DOI: 10.1002/elps.201300439] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 10/07/2013] [Accepted: 10/25/2013] [Indexed: 11/07/2022]
Abstract
This study describes application of liquid chromatography coupled with triple quadrupole mass spectrometry (LC-MS) for evaluation of vitamin C stability, the objective being prediction of the degradation products. Detection was performed with an UV detector (UV-Vis) in sequence with a triple-quad mass spectrometer in the multiple reaction mode. The negative ion mode of ESI and MS-MRM transitions of m/z 175→115 (quantifier) and 175→89 (qualifier) for ascorbic acid was used. All the validation parameters were within the range of acceptance proposed by the Food and Drug Administration. The method was fully validated in terms of linearity, LOD, LOQ, accuracy, and interday precision. Validation experiments revealed good linearity with R(2) = 0.999 within the established concentration range, and excellent repeatability (9.3%). The LOD of the method was 0.1524 ng/mL whereas the LOQ was 0.4679 ng/mL. LC-MS methodology proves to be an improved, simple, and fast approach to determining the content of vitamin C and its degradation products with high sensitivity, selectivity, and resolving power within 6 minutes of analysis.
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Affiliation(s)
- Małgorzata Szultka
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Torun, Poland
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West ME, Mauer LJ. Color and chemical stability of a variety of anthocyanins and ascorbic acid in solution and powder forms. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:4169-4179. [PMID: 23534933 DOI: 10.1021/jf400608b] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The color and chemical stabilities of six anthocyanins, including cyanidin 3-glucoside, highly purified and present in semipurified extracts (also containing other anthocyanins) from grape pomace, purple corn, and black rice, were determined in combination with ascorbic acid in solutions at differing pH values (3.0 and 4.0) and temperatures (6-40 °C) and lyophilized powders at different relative humidities (43-98% RH). Color and chemical changes were analyzed using CIELAB measurements and HPLC, respectively. In liquids, stability was inversely related to increasing pH and temperature; for powders, stability was inversely related to RH. The mutual destruction of anthocyanins and ascorbic acid in solution was confirmed, with unexpected new findings showing no significant stabilizing/destabilizing effect based upon anthocyanin structure, including differing flavylium core (three types) and type of acylation (two aliphatic, one cinnamic acid), or final extract purity.
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Affiliation(s)
- Megan E West
- Department of Food Science, Purdue University , 745 Agriculture Mall Drive, West Lafayette, Indiana 47907, United States
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Scherer R, Rybka ACP, Ballus CA, Meinhart AD, Filho JT, Godoy HT. Validation of a HPLC method for simultaneous determination of main organic acids in fruits and juices. Food Chem 2012. [DOI: 10.1016/j.foodchem.2012.03.111] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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