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Micheloni OB, Ramallo IA, Farroni AE, Furlan RLE. A simple thin-layer chromatography autography for the detection of peroxidase inhibitors. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2024; 61:1722-1732. [PMID: 39049920 PMCID: PMC11263322 DOI: 10.1007/s13197-024-05946-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 02/01/2024] [Accepted: 02/13/2024] [Indexed: 07/27/2024]
Abstract
Thin layer chromatography bioautographic assays facilitate the acquisition of activity-profile chromatograms and assist in pinpointing active constituents within complex mixtures by observing the inhibition halos they produce. Peroxidase is an enzyme implicated in the browning of different fresh cut vegetables and in several diseases. A peroxidase bioautographic assay was developed, based on enzyme agarose immobilization and the 2,2'-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt/radical cation (ABTS/ABTS·+) reporter system. Peroxidase was purified from potatoes with the aim to detect specific inhibitors. To reduce false positives, a non-enzymatic assay was also employed. The best results are obtained when a solution containing agarose, ABTS, hydrogen peroxide, and peroxidase in phosphate buffer is poured over the TLC plate (final concentrations: 0.031 mmoles/cm2, 0.239 µmoles/cm2, and 84.04 U/cm2) and incubated for 70 min. Limit of detection and quantification for quercetin is 0.16 µg and 0.54 µg, respectively. The developed system is able to detect quercetin in a Solidago chilensis Meyen extract and a peroxidase inhibitor in a Cichorium intybus L. extract. Therefore, the assay can detect inhibitory constituents in complex mixtures and differentiate between peroxidase inhibitors and ABTS·+ radical scavengers before any preparative fractionation, helping to take early operational decisions that can save time and resources. Graphical abstract Supplementary Information The online version contains supplementary material available at 10.1007/s13197-024-05946-w.
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Affiliation(s)
- Oscar Bernardo Micheloni
- Escuela de Ciencias Agrarias, Naturales y Ambientales, Universidad Nacional del Noroeste de la Provincia de Buenos Aires, Pergamino, Buenos Aires Argentina
| | - Ivana Ayelen Ramallo
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Suipacha 531, 2000 Rosario, Argentina
| | - Abel Eduardo Farroni
- Escuela de Ciencias Agrarias, Naturales y Ambientales, Universidad Nacional del Noroeste de la Provincia de Buenos Aires, Pergamino, Buenos Aires Argentina
- Laboratorio de Biotecnología, Estación Experimental Agropecuaria Pergamino, Instituto Nacional de Tecnología Agropecuaria, Pergamino, Buenos Aires Argentina
| | - Ricardo Luis Eugenio Furlan
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Suipacha 531, 2000 Rosario, Argentina
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Alvarez-Mora I, Arturi K, Béen F, Buchinger S, El Mais AER, Gallampois C, Hahn M, Hollender J, Houtman C, Johann S, Krauss M, Lamoree M, Margalef M, Massei R, Brack W, Muz M. Progress, applications, and challenges in high-throughput effect-directed analysis for toxicity driver identification - is it time for HT-EDA? Anal Bioanal Chem 2024:10.1007/s00216-024-05424-4. [PMID: 38992177 DOI: 10.1007/s00216-024-05424-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 06/21/2024] [Accepted: 06/24/2024] [Indexed: 07/13/2024]
Abstract
The rapid increase in the production and global use of chemicals and their mixtures has raised concerns about their potential impact on human and environmental health. With advances in analytical techniques, in particular, high-resolution mass spectrometry (HRMS), thousands of compounds and transformation products with potential adverse effects can now be detected in environmental samples. However, identifying and prioritizing the toxicity drivers among these compounds remain a significant challenge. Effect-directed analysis (EDA) emerged as an important tool to address this challenge, combining biotesting, sample fractionation, and chemical analysis to unravel toxicity drivers in complex mixtures. Traditional EDA workflows are labor-intensive and time-consuming, hindering large-scale applications. The concept of high-throughput (HT) EDA has recently gained traction as a means of accelerating these workflows. Key features of HT-EDA include the combination of microfractionation and downscaled bioassays, automation of sample preparation and biotesting, and efficient data processing workflows supported by novel computational tools. In addition to microplate-based fractionation, high-performance thin-layer chromatography (HPTLC) offers an interesting alternative to HPLC in HT-EDA. This review provides an updated perspective on the state-of-the-art in HT-EDA, and novel methods/tools that can be incorporated into HT-EDA workflows. It also discusses recent studies on HT-EDA, HT bioassays, and computational prioritization tools, along with considerations regarding HPTLC. By identifying current gaps in HT-EDA and proposing new approaches to overcome them, this review aims to bring HT-EDA a step closer to monitoring applications.
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Affiliation(s)
- Iker Alvarez-Mora
- Department of Exposure Science, Helmholtz Centre for Environmental Research, UFZ, Leipzig, Germany.
- Research Centre for Experimental Marine Biology and Biotechnology (PIE), University of the Basque Country (UPV/EHU), Plentzia, Basque Country, Spain.
| | - Katarzyna Arturi
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
| | - Frederic Béen
- KWR Water Research Institute, Nieuwegein, the Netherlands
- Chemistry for Environment and Health, Amsterdam Institute for Life and Environment (A-LIFE), Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Sebastian Buchinger
- Department of Biochemistry and Ecotoxicology, Federal Institute of Hydrology (BfG), Koblenz, Germany
| | | | | | - Meike Hahn
- Department of Biochemistry and Ecotoxicology, Federal Institute of Hydrology (BfG), Koblenz, Germany
| | - Juliane Hollender
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
- Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, Zürich, Switzerland
| | - Corine Houtman
- Chemistry for Environment and Health, Amsterdam Institute for Life and Environment (A-LIFE), Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
- The Water Laboratory, Haarlem, the Netherlands
| | - Sarah Johann
- Department of Evolutionary Ecology and Environmental Toxicology, Goethe University Frankfurt, Frankfurt Am Main, Germany
| | - Martin Krauss
- Department of Exposure Science, Helmholtz Centre for Environmental Research, UFZ, Leipzig, Germany
| | - Marja Lamoree
- Chemistry for Environment and Health, Amsterdam Institute for Life and Environment (A-LIFE), Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Maria Margalef
- Chemistry for Environment and Health, Amsterdam Institute for Life and Environment (A-LIFE), Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Riccardo Massei
- Department of Monitoring and Exploration Technologies, Research Data Management Team (RDM), Helmholtz Centre for Environmental Research, UFZ, Leipzig, Germany
- Department of Ecotoxicology, Group of Integrative Toxicology (iTox), Helmholtz Centre for Environmental Research, UFZ, Leipzig, Germany
| | - Werner Brack
- Department of Exposure Science, Helmholtz Centre for Environmental Research, UFZ, Leipzig, Germany
- Department of Evolutionary Ecology and Environmental Toxicology, Goethe University Frankfurt, Frankfurt Am Main, Germany
| | - Melis Muz
- Department of Exposure Science, Helmholtz Centre for Environmental Research, UFZ, Leipzig, Germany
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Shang HB, Zhang JM, An Z, Li XQ, Li X, Wu L, Li D. Reversible polarity-switch of thin-layer chromatography by photo-induction with multi-regulation in spatial dimension. Talanta 2024; 271:125654. [PMID: 38224659 DOI: 10.1016/j.talanta.2024.125654] [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: 11/01/2023] [Revised: 12/05/2023] [Accepted: 01/08/2024] [Indexed: 01/17/2024]
Abstract
Generally, thin-layer chromatography always undertakes the indispensable role in rapid screening and identification of specific compounds. Stationary phase is the core part of thin-layer chromatography with fixed property, which leading to the limitations of separation mode of only regulating the composition of mobile phase. This work was an attempt to fabricate the unique photosensitive thin-layer chromatography to make up the above major drawback. 4-[3-(Triethoxysilyl)propoxy]azobenzene (azo-PTES) was synthesized as photosensitive modifier to fabricate the photosensitive stationary phase, and the transformation of cis-trans structure of azo-PTES proceeds along with polarity difference under 365 nm and 473 nm irradiation. Based on this, the proposed photosensitive thin-layer chromatography shows the reversible switch of polarity of stationary phase by photoinduction, followed by the deserved reversible separation behavior. Furthermore, multi-regulation in spatial dimension was achieved based on the high freedom of spatial regulation of photoinduction, which brings about the integration of stationary phase with different polarity, just by photoinduction. The concept of photosensitive thin-layer chromatography provides new idea for improving separation efficiency and developing multi-dimensional thin-layer chromatography on the one plate.
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Affiliation(s)
- Hai-Bo Shang
- Interdisciplinary Program of Biological Functional Molecules, College of Integration Science, Yanbian University, Yanji City, 133002, Jilin Province, China; Department of Chemistry, National Demonstration Centre for Experimental Chemistry Education, Yanbian University, Yanji City, 133002, Jilin Province, China
| | - Jie-Min Zhang
- Interdisciplinary Program of Biological Functional Molecules, College of Integration Science, Yanbian University, Yanji City, 133002, Jilin Province, China
| | - Zhengjiu An
- Interdisciplinary Program of Biological Functional Molecules, College of Integration Science, Yanbian University, Yanji City, 133002, Jilin Province, China
| | - Xin-Qi Li
- Department of Chemistry, National Demonstration Centre for Experimental Chemistry Education, Yanbian University, Yanji City, 133002, Jilin Province, China
| | - Xia Li
- Interdisciplinary Program of Biological Functional Molecules, College of Integration Science, Yanbian University, Yanji City, 133002, Jilin Province, China
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China.
| | - Donghao Li
- Interdisciplinary Program of Biological Functional Molecules, College of Integration Science, Yanbian University, Yanji City, 133002, Jilin Province, China; Department of Chemistry, National Demonstration Centre for Experimental Chemistry Education, Yanbian University, Yanji City, 133002, Jilin Province, China.
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Galarce-Bustos O, Obregón C, Vallejos-Almirall A, Folch C, Acevedo F. Application of effect-directed analysis using TLC-bioautography for rapid isolation and identification of antidiabetic compounds from the leaves of Annona cherimola Mill. PHYTOCHEMICAL ANALYSIS : PCA 2023; 34:970-983. [PMID: 37488746 DOI: 10.1002/pca.3265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 06/29/2023] [Accepted: 07/03/2023] [Indexed: 07/26/2023]
Abstract
INTRODUCTION Type 2 diabetes mellitus is a globally prevalent chronic disease characterised by hyperglycaemia and oxidative stress. The search for new natural bioactive compounds that contribute to controlling this condition and the application of analytical methodologies that facilitate rapid detection and identification are important challenges for science. Annona cherimola Mill. is an important source of aporphine alkaloids with many bioactivities. OBJECTIVE The aim of this study is to isolate and identify antidiabetic compounds from alkaloid extracts with α-glucosidase and α-amylase inhibitory activity from A. cherimola Mill. leaves using an effect-directed analysis by thin-layer chromatography (TLC)-bioautography. METHODOLOGY Guided fractionation for α-glucosidase and α-amylase inhibitors in leaf extracts was done using TLC-bioassays. The micro-preparative TLC was used to isolate the active compounds, and the identification was performed by mass spectrometry associated with web-based molecular networks. Additionally, in vitro estimation of the inhibitory activity and antioxidant capacity was performed in the isolated compounds. RESULTS Five alkaloids (liriodenine, dicentrinone, N-methylnuciferine, anonaine, and moupinamide) and two non-alkaloid compounds (3-methoxybenzenepropanoic acid and methylferulate) with inhibitory activity were isolated and identified using a combination of simple methodologies. Anonaine, moupinamide, and methylferulate showed promising results with an outstanding inhibitory activity against both enzymes and antioxidant capacity that could contribute to controlling redox imbalance. CONCLUSIONS These high-throughput methodologies enabled a rapid isolation and identification of seven compounds with potential antidiabetic activity. To our knowledge, the estimated inhibitory activity of dicentrinone, N-methylnuciferine, and anonaine against α-glucosidase and α-amylase is reported here for the first time.
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Affiliation(s)
- Oscar Galarce-Bustos
- Laboratorio de Farmacognosia, Facultad de Farmacia, Universidad de Concepción, Concepción, Chile
| | - Camilo Obregón
- Laboratorio de Farmacognosia, Facultad de Farmacia, Universidad de Concepción, Concepción, Chile
| | - Alejandro Vallejos-Almirall
- Grupo Interdisciplinario de Biotecnología Marina (GIBMAR), Centro de Biotecnología, Universidad de Concepción, Concepción, Chile
| | - Christian Folch
- Departamento de Agroindustrias, Facultad de Ingeniería Agrícola, Universidad de Concepción, Chillán, Chile
| | - Francisca Acevedo
- Department of Basic Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
- Center of Excellence translational Medicine, Scientific and Technological Bioresource Nucleus, BIOREN, Universidad de La Frontera, Temuco, Chile
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Wilson ID, Poole CF. Planar chromatography - Current practice and future prospects. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1214:123553. [PMID: 36495686 DOI: 10.1016/j.jchromb.2022.123553] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/01/2022] [Accepted: 11/24/2022] [Indexed: 11/29/2022]
Abstract
Planar chromatography, in the form of thin-layer or high-performance thin-layer chromatography (TLC, HPTLC), continues to provide a robust and widely used separation technique. It is unrivaled as a simple and rapid qualitative method for mixture analysis, or for finding bioactive components in mixtures. The format of TLC/HPTLC also provides a unique method for preserving the separation, enabling further investigation of components of interest (including quantification/structure determination) separated in both time and space from the original analysis. The current practice of planar chromatography and areas of development of the technology are reviewed and promising future directions in the use of TLC/HPTLC are outlined.
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Affiliation(s)
- Ian D Wilson
- Division of Systems Medicine, Department of Metabolism, Digestion and Reproduction, Imperial College, Burlington Danes Building, Du Cane Road, London W12 0NN, UK.
| | - Colin F Poole
- Department of Chemistry, Wayne State University, Detroit, MI 48202, USA.
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Cabezudo I, Salazar MO, Ramallo IA, Furlan RLE. Effect-directed analysis in food by thin-layer chromatography assays. Food Chem 2022; 390:132937. [PMID: 35569399 DOI: 10.1016/j.foodchem.2022.132937] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 03/20/2022] [Accepted: 04/07/2022] [Indexed: 11/17/2022]
Abstract
Thin-layer chromatography (TLC) is widely used for food analysis and quality control. As an open chromatographic system, TLC is compatible with microbial-, biochemical-, and chemical-based derivatization methods. This compatibility makes it possible to run in situ bioassays directly on the plate to obtain activity-profile chromatograms, i.e., the effect-directed analysis of the sample. Many of the properties that can be currently measured using this assay format are related to either desired or undesired features for food related products. The TLC assays can detect compounds related to the stability of foods (antioxidant, antimicrobial, antibrowning, etc.), contaminants (antibiotics, pesticides, estrogenic compounds, etc.), and compounds that affect the absorption, metabolism or excretion of nutrients and metabolites or could improve the consumers health (enzyme inhibitors). In this article, different food related TLC-assays are reviewed. The different detection systems used, the way in which they are applied as well as selected examples are discussed.
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Affiliation(s)
- Ignacio Cabezudo
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Suipacha 531, 2000 Rosario, Argentina
| | - Mario O Salazar
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Suipacha 531, 2000 Rosario, Argentina
| | - I Ayelen Ramallo
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Suipacha 531, 2000 Rosario, Argentina
| | - Ricardo L E Furlan
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Suipacha 531, 2000 Rosario, Argentina.
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Tan B, Huang Y, Zheng J, Xu X, Xiao J, Liu Y. Establishment of Quality Control Standard and Efficacy Evaluation of Zhiqingshu Lotion Compound Preparation. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2022; 2022:2351366. [PMID: 35321202 PMCID: PMC8938067 DOI: 10.1155/2022/2351366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 02/26/2022] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To establish the quality standard of Zhiqingshu lotion by high-performance liquid chromatography (HPLC). METHODS HPLC was used to determine emodin, chrysophanol, caffeic acid, and berberine hydrochloride content, key water-soluble components of rhubarb, dandelion, and Phellodendron amurense in Zhiqingshu lotion. The macrophage inflammation model was used to analyze the anti-inflammatory effects of Zhiqingshu lotion. RESULTS HPLC results showed that the contents of emodin, chrysophanol, caffeic acid, and berberine hydrochloride in Zhiqingshu lotion were 7.93 ± 2.25, 20.85 ± 4.27, 48.9 ± 6.79, and 58.4 ± 10.3 μg/mL, respectively. Moreover, RT-qPCR results showed that different concentrations of Zhiqingshu lotion significantly reduced the expression of inflammatory factor tumor necrosis factor- (TNF-) α and interleukin- (IL-) 1β in lipopolysaccharide-induced macrophages. CONCLUSION HPLC could quantitatively and qualitatively analyze and identify the main components of Zhiqingshu lotion as rhodopsin, rhodopsin, caffeic acid, and berberine hydrochloride. And Zhiqingshu lotion has an excellent anti-inflammatory effect. This method was simple and reliable and could be used for the identification of the ingredients and content of Zhiqingshu lotion, thus improving the quality control of the drug.
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Affiliation(s)
- Benren Tan
- The Affiliated Yuebei People's Hospital of Shantou University Medical College, Shaoguan, Guangdong 512026, China
| | - Yichun Huang
- Shaoguan Institute for Food and Drug Control, Shaoguan, Guangdong 512028, China
| | - Jinkun Zheng
- The Affiliated Yuebei People's Hospital of Shantou University Medical College, Shaoguan, Guangdong 512026, China
| | - Xiaomei Xu
- The Affiliated Yuebei People's Hospital of Shantou University Medical College, Shaoguan, Guangdong 512026, China
| | - Jian Xiao
- The Affiliated Yuebei People's Hospital of Shantou University Medical College, Shaoguan, Guangdong 512026, China
| | - Yanlin Liu
- The Affiliated Yuebei People's Hospital of Shantou University Medical College, Shaoguan, Guangdong 512026, China
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Dawood HM, Shawky E, Hammoda HM, Metwally AM, Ibrahim RS. Development of a validated HPTLC-bioautographic method for evaluation of aromatase inhibitory activity of plant extracts and their constituents. PHYTOCHEMICAL ANALYSIS : PCA 2022; 33:115-126. [PMID: 34171936 DOI: 10.1002/pca.3074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 05/08/2021] [Accepted: 06/03/2021] [Indexed: 06/13/2023]
Abstract
INTRODUCTION Aromatase is a CYP450 enzyme that catalyses the conversion of androgens into oestrogens, where the decrease in the production of oestrogens aided by aromatase inhibitors is considered a target in post-menopausal breast cancer therapy. TLC-bioautography is a technique employed for combining chromatographic separations on TLC plates with bioassays. This is the first report to evaluate aromatase inhibitory activity using this technique. OBJECTIVES The aim of this study is to develop and validate a new TLC-bioautographic method for determination of aromatase inhibitory activity in 14 plant extracts. Two quantitation methods, the peak area method and reciprocal iso-inhibition volume (RIV) method, were compared and investigated to attain reliable results. Factors affecting the enzymatic reaction (temperature, pH, enzyme and substrate concentrations … etc.) were also investigated to attain the optimum parameters. METHODOLOGY TLC assisted by digital image processing was implemented for quantitative estimation of the aromatase inhibition of 14 plant extracts using chrysin as positive control. The fluorometric substrate dibenzyl fluorescein (DBF) was utilised for the assay, where inhibitory compounds were visualised as dark spots against a blue fluorescent background. Two software programs, Sorbfil® videodensitometer (in the peak area method) and ImageJ® (in the RIV method), were thoroughly validated using the International Council on Harmonisation (ICH) guideline and used for quantitation. RESULTS The RIV method showed superiority over the peak area method in the quantitation results of the tracks with non-homogenous background with %RSD values of 0.98 and 1.49 compared with 2.86 and 3.58, respectively. Further, the methods allow the comparison of the activity of different unknown inhibitory compounds without the need for a reference or a positive control. CONCLUSION Using the TLC-bioautographic method by image processing combined with the RIV quantitation method, simultaneous separation and quantitation of aromatase inhibitory components could be applied to estimate the relative activity of various plant extracts.
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Affiliation(s)
- Hend M Dawood
- Department of Pharmacognosy, Faculty of Pharmacy, Alexandria University, Egypt
| | - Eman Shawky
- Department of Pharmacognosy, Faculty of Pharmacy, Alexandria University, Egypt
| | - Hala M Hammoda
- Department of Pharmacognosy, Faculty of Pharmacy, Alexandria University, Egypt
| | - Aly M Metwally
- Department of Pharmacognosy, Faculty of Pharmacy, Alexandria University, Egypt
| | - Reham S Ibrahim
- Department of Pharmacognosy, Faculty of Pharmacy, Alexandria University, Egypt
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Zhang XW, Bian GL, Kang PY, Cheng XJ, Yan K, Liu YL, Gao YX, Li DQ. Recent advance in the discovery of tyrosinase inhibitors from natural sources via separation methods. J Enzyme Inhib Med Chem 2021; 36:2104-2117. [PMID: 34579614 PMCID: PMC8480707 DOI: 10.1080/14756366.2021.1983559] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Tyrosinase (TYR) inhibitors are in great demand in the food, cosmetic and medical industrials due to their important roles. Therefore, the discovery of high-quality TYR inhibitors is always pursued. Natural products as one of the most important sources of bioactive compounds discovery have been increasingly used for TYR inhibitors screening. However, due to their complex compositions, it is still a great challenge to rapid screening and identification of biologically active components from them. In recent years, with the help of separation technologies and the affinity and intrinsic activity of target enzymes, two advanced approaches including affinity screening and inhibition profiling showed great promises for a successful screening of bioactive compounds from natural sources. This review summarises the recent progress of separation-based methods for TYR inhibitors screening, with an emphasis on the principle, application, advantage, and drawback of each method along with perspectives in the future development of these screening techniques and screened hit compounds.
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Affiliation(s)
- Xiao-Wei Zhang
- Department of Neurological Surgery, the Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Guang-Li Bian
- Department of Pharmacy, the Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Pei-Ying Kang
- Department of Clinical Laboratory, the Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xin-Jie Cheng
- Department of Pharmacy, the Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Kai Yan
- Institute for Drug Control of Hebei Province, Shijiazhuang, China
| | - Yong-Li Liu
- Institute for Drug Control of Hebei Province, Shijiazhuang, China
| | - Yan-Xia Gao
- Institute for Drug Control of Hebei Province, Shijiazhuang, China
| | - De-Qiang Li
- Department of Pharmacy, the Second Hospital of Hebei Medical University, Shijiazhuang, China
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Wang M, Zhang Y, Wang R, Wang Z, Yang B, Kuang H. An Evolving Technology That Integrates Classical Methods with Continuous Technological Developments: Thin-Layer Chromatography Bioautography. Molecules 2021; 26:4647. [PMID: 34361800 PMCID: PMC8347725 DOI: 10.3390/molecules26154647] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 07/24/2021] [Accepted: 07/27/2021] [Indexed: 12/20/2022] Open
Abstract
Thin-layer chromatography (TLC) bioautography is an evolving technology that integrates the separation and analysis technology of TLC with biological activity detection technology, which has shown a steep rise in popularity over the past few decades. It connects TLC with convenient, economic and intuitive features and bioautography with high levels of sensitivity and specificity. In this study, we discuss the research progress of TLC bioautography and then establish a definite timeline to introduce it. This review summarizes known TLC bioautography types and practical applications for determining antibacterial, antifungal, antitumor and antioxidant compounds and for inhibiting glucosidase, pancreatic lipase, tyrosinase and cholinesterase activity constitutes. Nowadays, especially during the COVID-19 pandemic, it is important to identify original, natural products with anti-COVID potential compounds from Chinese traditional medicine and natural medicinal plants. We also give an account of detection techniques, including in situ and ex situ techniques; even in situ ion sources represent a major reform. Considering the current technical innovations, we propose that the technology will make more progress in TLC plates with higher separation and detection technology with a more portable and extensive scope of application. We believe this technology will be diffusely applied in medicine, biology, agriculture, animal husbandry, garden forestry, environmental management and other fields in the future.
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Affiliation(s)
| | | | | | | | | | - Haixue Kuang
- Key Laboratory of Chinese Materia Medica (Ministry of Education), Heilongjiang University of Chinese Medicine, Harbin 150000, China; (M.W.); (Y.Z.); (R.W.); (Z.W.); (B.Y.)
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Pobłocka-Olech L, Głód D, Jesionek A, Łuczkiewicz M, Krauze-Baranowska M. Studies on the Polyphenolic Composition and the Antioxidant Properties of the Leaves of Poplar (Populus spp.) Various Species and Hybrids. Chem Biodivers 2021; 18. [PMID: 34138528 DOI: 10.1002/cbdv.202100227] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 05/27/2021] [Indexed: 11/08/2022]
Abstract
The chemical composition in terms of flavonoid and salicylic compounds of leaves from 6 species and 3 hybrids of poplars (Populus) was identified with the use of TLC and HPLC-DAD/ESI-MS methods. Chromatographic analyses were carried out with 21 standard compounds including salicylic compounds (2), phenolic acids (3) and flavonoids (16). Moreover, on the basis of the obtained chromatographic data from the HPLC-DAD/ESI-MS and TLC separations, the presence of salicortin, tremulacin and chlorogenic acid was confirmed, depending on the analyzed poplar species or hybrid. The content of salicylic compounds was determined by HPLC-UV method and expressed on salicin as free and total fraction. Total flavonoid content was determined by spectroscopic method as quercetin equivalent. Significant qualitative and quantitative differences in the chemical composition of the analyzed leaves were demonstrated. The highest concentration of flavonoids (8.02 mg/g) was found in the leaves of Populus nigra, while the highest content of salicylic compounds (47.14 mg/g) was found in the leaves of P.×berolinensis. The antioxidant and xanthine oxidase inhibition properties of extracts from poplar leaves were investigated by TLC bioautography. It has been shown that the richest set of compounds with antioxidant properties are present in the leaves of P. alba, P.×candicans and P. nigra.
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Affiliation(s)
- Loretta Pobłocka-Olech
- Department of Pharmacognosy with Medicinal Plants Garden, Faculty of Pharmacy, Medical University of Gdańsk, Gen. J. Hallera Str. 107, 80-416, Gdańsk, Poland
| | - Daniel Głód
- Department of Pharmacognosy with Medicinal Plants Garden, Faculty of Pharmacy, Medical University of Gdańsk, Gen. J. Hallera Str. 107, 80-416, Gdańsk, Poland
| | - Anna Jesionek
- Department of Pharmacognosy with Medicinal Plants Garden, Faculty of Pharmacy, Medical University of Gdańsk, Gen. J. Hallera Str. 107, 80-416, Gdańsk, Poland
| | - Maria Łuczkiewicz
- Department of Pharmacognosy with Medicinal Plants Garden, Faculty of Pharmacy, Medical University of Gdańsk, Gen. J. Hallera Str. 107, 80-416, Gdańsk, Poland
| | - Mirosława Krauze-Baranowska
- Department of Pharmacognosy with Medicinal Plants Garden, Faculty of Pharmacy, Medical University of Gdańsk, Gen. J. Hallera Str. 107, 80-416, Gdańsk, Poland
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12
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Shen MR, He Y, Shi SM. Development of chromatographic technologies for the quality control of Traditional Chinese Medicine in the Chinese Pharmacopoeia. J Pharm Anal 2020; 11:155-162. [PMID: 34012691 PMCID: PMC8116203 DOI: 10.1016/j.jpha.2020.11.008] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 11/21/2020] [Accepted: 11/24/2020] [Indexed: 11/29/2022] Open
Abstract
As an important branch of medicine, Traditional Chinese Medicine (TCM) has been applied for the treatment of diseases for thousands of years in China and other countries in East Asia. The Chinese Pharmacopoeia (ChP) is a drug code formulated by the Chinese government, and it includes a special volume for the monographs of TCM, which plays an important role in ensuring the quality of drugs. The use of quality control technology has always been a complex and important factor in TCM. Owing to the chemical diversity of TCM, chromatography technology has been proven to be a comprehensive strategy for the assessment of the overall quality of TCM and has become the main analytical method in the ChP. This article provides an overview of the classical and modern chromatographic technologies applied in the ChP, and summarizes the advantages and disadvantages of each technique in the TCM monographs. In 2020, the new edition of the ChP (the 2020 edition) has been implemented at the end of 2020. This paper also contains a brief introduction about the application of chromatographic technologies in the new edition of the ChP. An overview of the classical and modern chromatographic technologies applied in the ChP. A discussion of the reason why each chromatographic technologies was chosen in the quality control of TCM. Introduction of the chromatographic technologies applied in the 2020 edition of ChP.
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13
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Gaurav, Zahiruddin S, Parveen B, Ibrahim M, Sharma I, Sharma S, Sharma AK, Parveen R, Ahmad S. TLC-MS Bioautography-Based Identification of Free-Radical Scavenging, α-Amylase, and α-Glucosidase Inhibitor Compounds of Antidiabetic Tablet BGR-34. ACS OMEGA 2020; 5:29688-29697. [PMID: 33251404 PMCID: PMC7689676 DOI: 10.1021/acsomega.0c02995] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 10/29/2020] [Indexed: 11/07/2023]
Abstract
BGR-34 is a polyherbal formulation frequently used to combat diabetes around the globe especially in Asian countries. It provides an attractive treatment option to prediabetics, diabetics, and in metabolic disorders by controlling the altered blood glucose level. The lack of phytopharmacological studies on BGR-34 prompted as to reveal the compounds responsible for the antidiabetic and free-radical scavenging activity of BGR-34. An attempt was made to assess in vitro α-amylase and α-glucosidase enzyme inhibition of BGR-34 along with its free-radical scavenging potential via DPPH scavenging activity. Further, HPTLC profiling and quantitative analysis of berberine and palmatine in BGR-34 were carried out. Thereafter, the TLC-bioautographic-MS analysis was performed to identify the compounds responsible for antidiabetic and antioxidant activities in BGR-34. The results had shown a significant and dose-dependent inhibition potential of BGR-34 against in vitro α-amylase and α-glucosidase enzymatic reactions along with significant inhibition in DPPH free-radical scavenging activity. The HPTLC profiling and quantitative validation studies showed the presence of berberine and palmatine 44.926 ± 0.2907 and 10.507 ± 0.154 μg/g, respectively. The TLC-MS bioautography revealed a total of four DPPH-active, two α-amylase-active, and nine α-glucosidase-active compounds in BGR-34. It was observed from the study that BGR-34 possesses verities of bioactive compounds, which are reasonable not only for its antidiabetic effect but also for its antioxidant activity.
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Affiliation(s)
- Gaurav
- Bioactive
Natural Product Laboratory, School of Pharmaceutical Education and
Research, Jamia Hamdard, New Delhi 110062, India
| | - Sultan Zahiruddin
- Bioactive
Natural Product Laboratory, School of Pharmaceutical Education and
Research, Jamia Hamdard, New Delhi 110062, India
| | - Bushra Parveen
- Bioactive
Natural Product Laboratory, School of Pharmaceutical Education and
Research, Jamia Hamdard, New Delhi 110062, India
| | - Mohammad Ibrahim
- Bioactive
Natural Product Laboratory, School of Pharmaceutical Education and
Research, Jamia Hamdard, New Delhi 110062, India
| | - Ikshit Sharma
- AIMIL
Pharmaceuticals (India) Ltd, Saini Majra, Ropar Nalagarh Rd, Tehsil Nalagarh, Solan District, (H.P) 174101, India
| | - Sanchit Sharma
- AIMIL
Pharmaceuticals (India) Ltd, Saini Majra, Ropar Nalagarh Rd, Tehsil Nalagarh, Solan District, (H.P) 174101, India
| | - Anil Kumar Sharma
- AIMIL
Pharmaceuticals (India) Ltd, Saini Majra, Ropar Nalagarh Rd, Tehsil Nalagarh, Solan District, (H.P) 174101, India
| | - Rabea Parveen
- Human
Genetics Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Sayeed Ahmad
- Bioactive
Natural Product Laboratory, School of Pharmaceutical Education and
Research, Jamia Hamdard, New Delhi 110062, India
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14
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Zang Y, Miao Y, Wu T, Cheng Z. Development of a thin-layer chromatography bioautographic assay for neuraminidase inhibitors hyphenated with electrostatic field induced spray ionisation-mass spectrometry for identification of active Isatis indigotica root compounds. J Chromatogr A 2020; 1638:461597. [PMID: 33250163 DOI: 10.1016/j.chroma.2020.461597] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/23/2020] [Accepted: 09/28/2020] [Indexed: 02/08/2023]
Abstract
The identification of neuraminidase inhibitors from natural products is a promising strategy in the field of anti-influenza research. In this study, a new thin-layer chromatography (TLC) bioautographic assay for the screening of neuraminidase inhibitors from natural products was developed. This TLC bioassay is based on the one-step reaction of neuraminidase with the sodium salt of 5‑bromo‑4‑chloro‑3-indolyl-α-d-N-acetylneuraminic acid (substrate) and the subsequent formation of blue coloured products. Neuraminidase inhibitory activity was shown by the development of white spots against the blue TLC background. The key factors affecting the assay (such as enzyme concentration, substrate concentration, incubation time, reaction time, and pH) were investigated and optimised by a combination of a one-factor-at-a-time design and a Box-Behnken design/response surface method. The developed TLC bioautographic method was applied to identify neuraminidase inhibitory compounds in the roots of Isatis indigotica. Eleven active compounds including six alkaloids, three lignans, one sterol, and one fatty acid were identified in situ by direct coupling with an electrostatic field induced spray ionisation-mass spectrometry approach through analysis of their MSn (n = 4) data or comparison with reference substances. The developed TLC bioautographic assay is simple, rapid, and efficient for screening potential neuraminidase inhibitors from natural products.
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Affiliation(s)
- Yichao Zang
- Department of Natural Medicine, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
| | - Yu Miao
- Key Laboratory of Standardization of Chinese Medicines of Ministry of Education, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Tao Wu
- Key Laboratory of Standardization of Chinese Medicines of Ministry of Education, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China.
| | - Zhihong Cheng
- Department of Natural Medicine, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China.
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Cabezudo I, Ayelen Ramallo I, Alonso VL, Furlan RLE. Effect directed synthesis of a new tyrosinase inhibitor with anti-browning activity. Food Chem 2020; 341:128232. [PMID: 33039744 DOI: 10.1016/j.foodchem.2020.128232] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 09/24/2020] [Accepted: 09/24/2020] [Indexed: 11/24/2022]
Abstract
The inhibition of enzymatic browning is an attractive target to elevate the quality of foods. The objective of this work is to describe a novel platform for the discovery of tyrosinase inhibitors, based on (a) one-pot preparation of a library of thiosemicarbazide compounds, (b) biological evaluation using tyrosinase TLC bioautography, (c) inhibitor identification via mass spectrometry coupled to bioautography. During these proof-of-concept experiments, the approach led to the straightforward identification of a new thiosemicarbazone with improved tyrosinase inhibition properties and fresh-cut apple slices antibrowning effect when compared to kojic acid. In conclusion, the platform represents an interesting strategy for the discovery of this type of inhibitors.
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Affiliation(s)
- Ignacio Cabezudo
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Suipacha 531, 2000 Rosario, Argentina.
| | - I Ayelen Ramallo
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Suipacha 531, 2000 Rosario, Argentina.
| | - Victoria L Alonso
- Instituto de Biología Molecular y Celular de Rosario (IBR-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Argentina.
| | - Ricardo L E Furlan
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Suipacha 531, 2000 Rosario, Argentina.
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16
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Attia R, Zedet A, Bourjot M, Skhiri E, Messaoud C, Girard C. Thin‐layer chromatography‐bioautographic method for the detection of arginase inhibitors. J Sep Sci 2020; 43:2477-2486. [DOI: 10.1002/jssc.201901210] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 03/20/2020] [Accepted: 03/21/2020] [Indexed: 12/11/2022]
Affiliation(s)
- Rym Attia
- PEPITE EA4267University of Bourgogne Franche‐Comté Besançon France
- Laboratory of Nanobiotechnology and Medicinal PlantsDepartment of BiologyNational Institute of Applied Science and Technology (INSAT)University of Carthage Tunis Cedex Tunisia
| | - Andy Zedet
- PEPITE EA4267University of Bourgogne Franche‐Comté Besançon France
| | - Mélanie Bourjot
- Laboratoire de Chimie Analytique des Molécules BioActives et PharmacognosieIPHC, UMR 7178 CNRSUniversité de Strasbourg Faculté de Pharmacie Illkirch France
| | - Eya Skhiri
- Laboratory of Nanobiotechnology and Medicinal PlantsDepartment of BiologyNational Institute of Applied Science and Technology (INSAT)University of Carthage Tunis Cedex Tunisia
| | - Chokri Messaoud
- Laboratory of Nanobiotechnology and Medicinal PlantsDepartment of BiologyNational Institute of Applied Science and Technology (INSAT)University of Carthage Tunis Cedex Tunisia
| | - Corine Girard
- PEPITE EA4267University of Bourgogne Franche‐Comté Besançon France
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17
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TLC-Bioautography as a fast and cheap screening method for the detection of α-chymotrypsin inhibitors in crude plant extracts. J Biotechnol 2020; 313:11-17. [DOI: 10.1016/j.jbiotec.2020.02.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 02/28/2020] [Accepted: 02/28/2020] [Indexed: 01/22/2023]
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18
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Mahran E, Keusgen M, Morlock GE. New planar assay for streamlined detection and quantification of β-glucuronidase inhibitors applied to botanical extracts. Anal Chim Acta X 2020; 4:100039. [PMID: 33117985 PMCID: PMC7587031 DOI: 10.1016/j.acax.2020.100039] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 01/13/2020] [Accepted: 01/17/2020] [Indexed: 01/04/2023] Open
Abstract
The inhibition of the β-glucuronidase released from gut bacteria is associated with specific health-related benefits. Though a number of β-glucuronidase inhibition assays are currently in use, none of them can directly measure the relevant activity of each single constituent in a complex mixture, without prior separation and tedious isolation of the pure compounds. Thus, the hyphenation of the high performance thin layer chromatography (HPTLC) technique with a β-glucuronidase inhibition assay was investigated and successfully demonstrated for the first time. A colorimetric as well as fluorometric detection of the inhibitors was achieved using 5-bromo-4-chloro-3-indolyl-β-D-glucuronide as a substrate. Hence, β-glucuronidase inhibitors were detected as bright zones against an indigo blue or fluorescent background. The established method was optimized and validated employing the well-known inhibitor d-saccharic acid 1,4-lactone monohydrate. As proof of concept, the suitability of the new workflow was verified through analysis of two botanical extracts, Primula boveana and silymarin flavonolignans from Silybum marianum fruits. The found inhibitors were identified by spectroscopic methods; one of them, 3ʹ-O-(β-galactopyranosyl)-flavone, is here described as a newly isolated natural compound. The new hyphenation HPTLC-UV/Vis/FLD-β-glucuronidase inhibition assay-HRMS covers four orthogonal dimensions, i.e. separation, spectral detection, biochemical activity and structural characterization, in a highly targeted time- and material-saving workflow for analysis of complex or costly mixtures. Coupling of HPTLC to the β-glucuronidase inhibition assay is demonstrated. Colorimetric and fluorometric detection of the inhibition was given. A new β-glucuronidase inhibiting flavonoid in P. boveana was elucidated. HPTLC-HRMS analysis of other β-glucuronidase inhibitors is shown for silymarin. Analysis of rare plants (low extract amount) is possible with the new planar assay.
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Affiliation(s)
- Ehab Mahran
- Institute of Nutritional Science, Chair of Food Science, Interdisciplinary Research Center IFZ, Justus Liebig University Giessen, Heinrich-Buff-Ring 26-32, 35392, Giessen, Germany
- Institute of Pharmaceutical Chemistry, Philipps University Marburg, Marbacher Weg 6-10, 35032, Marburg, Germany
- Pharmacognosy Department, Faculty of Pharmacy, Al-Azhar University, 11371, Cairo, Egypt
| | - Michael Keusgen
- Institute of Pharmaceutical Chemistry, Philipps University Marburg, Marbacher Weg 6-10, 35032, Marburg, Germany
| | - Gertrud E. Morlock
- Institute of Nutritional Science, Chair of Food Science, Interdisciplinary Research Center IFZ, Justus Liebig University Giessen, Heinrich-Buff-Ring 26-32, 35392, Giessen, Germany
- Corresponding author.
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19
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Abstract
Enzymatic bioautography enables the detection of enzyme inhibitors absorbed on a thin-layer chromatography plate. Therefore, it is an assay format that is particularly useful for the detection of inhibitors present in complex mixtures. The inhibition properties of compounds separated by thin-layer chromatography can be directly analyzed to produce an inhibition profile. Here, we describe the conditions to detect inhibitor of the enzymes xanthine oxidase and β-glucosidase immobilized on agar gel.
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Affiliation(s)
- I Ayelen Ramallo
- Facultad de Ciencias Bioquímicas, Universidad Nacional de Rosario-CONICET, Rosario, Argentina
| | - Mario O Salazar
- Facultad de Ciencias Bioquímicas, Universidad Nacional de Rosario-CONICET, Rosario, Argentina
| | - Ricardo L E Furlan
- Facultad de Ciencias Bioquímicas, Universidad Nacional de Rosario-CONICET, Rosario, Argentina.
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20
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Mahran E, El Gamal I, Keusgen M, Morlock GE. Effect-directed analysis by high-performance thin-layer chromatography for bioactive metabolites tracking in Primula veris flower and Primula boveana leaf extracts. J Chromatogr A 2019; 1605:460371. [DOI: 10.1016/j.chroma.2019.460371] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 07/12/2019] [Accepted: 07/13/2019] [Indexed: 12/22/2022]
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21
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Solís CM, Salazar MO, Ramallo IA, García P, Furlan RLE. A Tyrosinase Inhibitor from a Nitrogen-Enriched Chemically Engineered Extract. ACS COMBINATORIAL SCIENCE 2019; 21:622-627. [PMID: 31361945 DOI: 10.1021/acscombsci.9b00064] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The enzyme tyrosinase is involved in the biosynthesis of melanin and the enzymatic browning of fruits and vegetables, and therefore, its inhibitors have potential to treat hyperpigmentary disorders or to function as food antibrowning agents. The use of hydrazine monohydrate as a reagent to prepare chemically engineered extracts can lead to semisynthetic compounds that contain the portion N-N, a fragment rarely found in natural products and present in some tyrosinase inhibitors. Here, we report the tyrosinase inhibition screening of a series of chemically engineered extracts that are diversified by reaction with hydrazine. LC-MS was used to evaluate the change in composition produced by the reaction. Bioguided fractionation of the most active chemically engineered extract, prepared from Matricaria recutita L., led to the discovery of a pyrazole that inhibits tyrosinase with an IC50 value of 28.20 ± 1.13 μM. This compound was produced by a one-pot double chemical transformation of its natural precursor, which includes an unexpected selective removal of one -OH group.
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Affiliation(s)
- Carlos M. Solís
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, 2000, Rosario, Argentina
| | - Mario O. Salazar
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, 2000, Rosario, Argentina
| | - I. Ayelen Ramallo
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, 2000, Rosario, Argentina
| | - Paula García
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, 2000, Rosario, Argentina
| | - Ricardo L. E. Furlan
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, 2000, Rosario, Argentina
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22
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Mahran E, Morlock GE, Keusgen M. Guided isolation of new iridoid glucosides from Anarrhinum pubescens by high-performance thin-layer chromatography-acetylcholinesterase assay. J Chromatogr A 2019; 1609:460438. [PMID: 31447207 DOI: 10.1016/j.chroma.2019.460438] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 08/06/2019] [Accepted: 08/06/2019] [Indexed: 10/26/2022]
Abstract
Plants are an important source of natural iridoids. This study demonstrates for the first time the acetylcholinesterase (AChE) inhibitory activity of iridoids belonging to the class of antirrhinosides. As iridoids distinguish the chemical composition of most species of the Plantaginaceae family, the active AChE inhibitors were investigated in the hydro-alcoholic extract of Anarrhinum pubescens Fresen. High-performance thin-layer chromatography (HPTLC) in combination with the AChE inhibition assay is a time and material saving methodology, and thus was employed to directly point to the individual enzyme inhibitors occurring in the plant. The effect-directed screening successfully discovered three active metabolites. These were characterized as antirrhinoside-derived iridoids. Two of these are here reported as newly isolated natural compounds. Identification of the two new metabolites was based on analysis of their collected spectroscopic data (HRMS, 1D and 2D NMR). Their structures were elucidated to be 6-O-, 6'-O-di-trans-cinnamoyl-antirrhinoside (1) and 5-O-, 6-O-difoliamenthoyl-antirrhinoside (3), while the previously known compound 6-O-foliamenthoyl-(6'-O-cinnamoyl)-antirrhinoside (2) was assigned by extensive analysis of its HRMS and HRMS/MS data. The activity of the isolated compounds was referred to the known AChE inhibitor rivastigmine, i.e. their activity were calculated and expressed as values equivalently to rivastigmine. This neuroprotective potential of iridoids mediated through AChE inhibition promote them to compete as natural curatives for neurodegenerative disorders like Alzheimer's disease.
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Affiliation(s)
- Ehab Mahran
- Chair of Food Science, Institute of Nutritional Science, and Interdisciplinary Research Center (IFZ), Justus Liebig University Giessen, Heinrich-Buff-Ring 26-32, 35392 Giessen, Germany; Institute of Pharmaceutical Chemistry, Philipps University Marburg, Marbacher Weg 6-10, 35032 Marburg, Germany; Pharmacognosy Department, Faculty of Pharmacy, Al-Azhar University, 11371 Cairo, Egypt
| | - Gertrud E Morlock
- Chair of Food Science, Institute of Nutritional Science, and Interdisciplinary Research Center (IFZ), Justus Liebig University Giessen, Heinrich-Buff-Ring 26-32, 35392 Giessen, Germany.
| | - Michael Keusgen
- Institute of Pharmaceutical Chemistry, Philipps University Marburg, Marbacher Weg 6-10, 35032 Marburg, Germany
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23
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Akin M, Saki N. Antimicrobial, DPPH scavenging and tyrosinase inhibitory activities of Thymus vulgaris, Helichrysum arenarium and Rosa damascena mill. ethanol extracts by using TLC bioautography and chemical screening methods. J LIQ CHROMATOGR R T 2019. [DOI: 10.1080/10826076.2019.1591977] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Mustafa Akin
- Faculty of Art and Sciences, Department of Chemistry, University of Kocaeli, Kocaeli, Turkey
| | - Neslihan Saki
- Faculty of Art and Sciences, Department of Chemistry, University of Kocaeli, Kocaeli, Turkey
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24
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Revoltella S, Rainer B, Waltenberger B, Pagitz K, Schwaiger S, Stuppner H. HPTLC Autography Based Screening and Isolation of Mushroom Tyrosinase Inhibitors of European Plant Species. Chem Biodivers 2019; 16:e1800541. [DOI: 10.1002/cbdv.201800541] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 12/17/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Silvia Revoltella
- Institute of Pharmacy/Pharmacognosy, Center for Molecular Biosciences Innsbruck (CMBI)University of Innsbruck, Innrain 80–82 Innsbruck 6020 Austria
| | - Bettina Rainer
- Institute of Pharmacy/Pharmacognosy, Center for Molecular Biosciences Innsbruck (CMBI)University of Innsbruck, Innrain 80–82 Innsbruck 6020 Austria
- MCI Management Center Innsbruck Maximilianstraße 2 Innsbruck 6020 Austria
| | - Birgit Waltenberger
- Institute of Pharmacy/Pharmacognosy, Center for Molecular Biosciences Innsbruck (CMBI)University of Innsbruck, Innrain 80–82 Innsbruck 6020 Austria
| | - Konrad Pagitz
- Institute of BotanyUniversity of Innsbruck Sternwartestraße 15 Innsbruck 6020 Austria
| | - Stefan Schwaiger
- Institute of Pharmacy/Pharmacognosy, Center for Molecular Biosciences Innsbruck (CMBI)University of Innsbruck, Innrain 80–82 Innsbruck 6020 Austria
| | - Hermann Stuppner
- Institute of Pharmacy/Pharmacognosy, Center for Molecular Biosciences Innsbruck (CMBI)University of Innsbruck, Innrain 80–82 Innsbruck 6020 Austria
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25
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Jesionek A, Poblocka-Olech L, Zabiegala B, Bucinski A, Krauze-Baranowska M, Luczkiewicz M. Validated HPTLC method for determination of ledol and alloaromadendrene in the essential oil fractions of Rhododendron tomentosum plants and in vitro cultures and bioautography for their activity screening. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1086:63-72. [DOI: 10.1016/j.jchromb.2018.04.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 03/06/2018] [Accepted: 04/06/2018] [Indexed: 02/06/2023]
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