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Adiamo OQ, Bobasa EM, Phan ADT, Akter S, Seididamyeh M, Dayananda B, Gaisawat MB, Kubow S, Sivakumar D, Sultanbawa Y. In-vitro colonic fermentation of Kakadu plum (Terminalia ferdinandiana) fruit powder: Microbial biotransformation of phenolic compounds and cytotoxicity. Food Chem 2024; 448:139057. [PMID: 38555694 DOI: 10.1016/j.foodchem.2024.139057] [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: 07/28/2023] [Revised: 01/26/2024] [Accepted: 03/15/2024] [Indexed: 04/02/2024]
Abstract
Kakadu plum (Terminalia ferdinandiana) (KP) is an indigenous fruit used as a functional ingredient in powdered form. Three KP doses (1, 2.5 and 5 g) were digested in a dynamic in vitro gut digestion model over 48 h. Faecal water digests from the colonic reactors were assessed for total soluble polyphenols (TSP), ferric reducing antioxidant power (FRAP), phenolic metabolites and short-chain fatty acids (SCFAs). Effects of digests on cell viability were tested against Caco-2 intestinal and HepG2 hepatic cells. All doses of KP fermentation produced castalagin, corilagin, chebulagic acid, chebulinic acid, and gallic acid. TSP and FRAP significantly increased in 5 g KP digests at 0 and 48 h of fermentation. SCFA concentrations significantly increased after 48 h. Cytotoxic effects of 2.5 and 5 g KP digests diminished significantly after 12 h. Overall, colonic fermentation increased antioxidant activity and polyphenolic metabolites of 5 g KP powder for 48 h.
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Affiliation(s)
- Oladipupo Q Adiamo
- ARC Industrial Transformation Training Centre for Uniquely Australian Foods, Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland (UQ), Indooroopilly, QLD 4068, Australia
| | - Eshetu M Bobasa
- ARC Industrial Transformation Training Centre for Uniquely Australian Foods, Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland (UQ), Indooroopilly, QLD 4068, Australia
| | - Anh Dao Thi Phan
- ARC Industrial Transformation Training Centre for Uniquely Australian Foods, Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland (UQ), Indooroopilly, QLD 4068, Australia
| | - Saleha Akter
- ARC Industrial Transformation Training Centre for Uniquely Australian Foods, Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland (UQ), Indooroopilly, QLD 4068, Australia
| | - Maral Seididamyeh
- ARC Industrial Transformation Training Centre for Uniquely Australian Foods, Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland (UQ), Indooroopilly, QLD 4068, Australia
| | - Buddhi Dayananda
- School of Agriculture and Food Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | | | - Stan Kubow
- School of Human Nutrition, McGill University, Montréal, QC, Canada
| | - Dharini Sivakumar
- ARC Industrial Transformation Training Centre for Uniquely Australian Foods, Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland (UQ), Indooroopilly, QLD 4068, Australia; Phytochemical Food Network, Department of Crop Sciences, Tshwane University of Technology, Pretoria 001, South Africa
| | - Yasmina Sultanbawa
- ARC Industrial Transformation Training Centre for Uniquely Australian Foods, Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland (UQ), Indooroopilly, QLD 4068, Australia.
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2
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Fan S, Zhou Y, Zhao Y, Daglia M, Zhang J, Zhu Y, Bai J, Zhu L, Xiao X. Metabolomics reveals the effects of Lactiplantibacillus plantarum dy-1 fermentation on the lipid-lowering capacity of barley β-glucans in an in vitro model of gut-liver axis. Int J Biol Macromol 2023; 253:126861. [PMID: 37714241 DOI: 10.1016/j.ijbiomac.2023.126861] [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: 02/16/2023] [Revised: 07/11/2023] [Accepted: 09/09/2023] [Indexed: 09/17/2023]
Abstract
Bioactive polysaccharides known as the biological response modifiers, can directly interact with intestinal epithelium cells (IEC) and regulate key metabolic processes such as lipid metabolism. Here, the coculture of Caco-2/HT29 monolayer (>400 Ω × cm2) and HepG2 cells was developed to mimic the gut-liver interactions. This system was used to investigate the effects of raw and fermented barley β-glucans (RBG and FBG) on lipid metabolism by directly interacting with IEC. Both RBG and FBG significantly and consistently reduced the lipid droplets and triacylglycerol levels in monoculture and coculture of HepG2 overloaded with oleic acid. Notably, FBG significantly and distinctly elevated PPARα (p < 0.05) and PPARα-responsive ACOX-1 (p < 0.01) gene expressions, promoting lipid degradation in cocultured HepG2. Moreover, the metabolomics analyses revealed that FBG had a unique impact on extracellular metabolites, among them, the differential metabolite thiomorpholine 3-carboxylate was significantly and strongly correlated with PPARα (r = -0.68, p < 0.01) and ACOX-1 (r = -0.76, p < 0.01) expression levels. Taken together, our findings suggest that FBG-mediated gut-liver interactions play a key role in its lipid-lowering effects that are superior to those of RBG. These results support the application of Lactiplantibacillus fermentation for improving hypolipidemic outcomes.
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Affiliation(s)
- Songtao Fan
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Yurong Zhou
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Yansheng Zhao
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Maria Daglia
- Department of Pharmacy, University of Naples Federico II, Naples, Italy; International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang, China
| | - Jiayan Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Ying Zhu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Juan Bai
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Lin Zhu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Xiang Xiao
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China.
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3
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Catelli Rocha Torres L, Giovanini de Oliveira Sartori A, Paula de Souza Silva A, Matias de Alencar S. Bioaccessibility and uptake/epithelial transport of vitamin E: discoveries and challenges of in vitro and ex vivo assays. Food Res Int 2022; 162:112143. [DOI: 10.1016/j.foodres.2022.112143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 11/01/2022] [Accepted: 11/15/2022] [Indexed: 11/21/2022]
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Mehmood S, Maqsood M, Mahtab N, Khan MI, Sahar A, Zaib S, Gul S. Epigallocatechin gallate: Phytochemistry, bioavailability, utilization challenges, and strategies. J Food Biochem 2022; 46:e14189. [PMID: 35474461 DOI: 10.1111/jfbc.14189] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/05/2022] [Accepted: 03/29/2022] [Indexed: 12/17/2022]
Abstract
Epigallocatechin gallate (EGCG), a green tea catechin, has gained the attention of current study due to its excellent health-promoting effects. It possesses anti-obesity, antimicrobial, anticancer, anti-inflammatory activities, and is under extensive investigation in functional foods for improvement. It is susceptible to lower stability, lesser bioavailability, and lower absorption rate due to various environmental, processing, formulations, and gastrointestinal conditions of the human body. Therefore, it is the foremost concern for the researchers to enhance its bioactivity and make it the most suitable therapeutic compound for its clinical applications. In the current review, factors affecting the bioavailability of EGCG and the possible strategies to overcome these issues are reviewed and discussed. This review summarizes structural modifications and delivery through nanoparticle-based approaches including nano-emulsions, encapsulations, and silica-based nanoparticles for effective use of EGCG in functional foods. Moreover, recent advances to enhance EGCG therapeutic efficacy by specifically targeting its molecules to increase its bioavailability and stability are also described. PRACTICAL APPLICATIONS: The main green tea constituent EGCG possesses several health-promoting effects making EGCG a potential therapeutic compound to cure ailments. However, its low stability and bioavailability render its uses in many disorders. Synthesizing EGCG prodrugs by structural modifications helps against its low bioavailability and stability by overcoming premature degradation and lower absorption rate. This review paper summarizes various strategies that benefit EGCG under different physiological conditions. The esterification, nanoparticle approaches, silica-based EGCG-NPs, and EGCG formulations serve as ideal EGCG modification strategies to deliver superior concentrations with lesser toxicity for its efficient penetration and absorption across cells both in vitro and in vivo. As a result of EGCG modifications, its bioactivities would be highly improved at lower doses. The protected or modified EGCG molecule would have enhanced potential effects and stability that would contribute to the clinical applications and expand its use in various food and cosmetic industries.
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Affiliation(s)
- Shomaila Mehmood
- Anhui Key Laboratory of Modern Biomanufacturing, School of Life Sciences, Anhui University, Hefei, P. R. China
| | - Maria Maqsood
- National Institute of Food Science and Technology, University of Agriculture, Faisalabad, Pakistan
| | - Nazia Mahtab
- School of Resources and Environmental Engineering, Anhui University, Hefei, P. R. China
| | - Muhammad Issa Khan
- National Institute of Food Science and Technology, University of Agriculture, Faisalabad, Pakistan
| | - Amna Sahar
- Department of Food Engineering, University of Agriculture, Faisalabad, Pakistan
| | - Sania Zaib
- Department of Biochemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Shehla Gul
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan
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5
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Müller L, Keuter L, Bücksteeg D, Uebel T, Wilken M, Schürmann L, Behrens M, Humpf HU, Esselen M. Metabolic conjugation reduces in vitro toxicity of the flavonoid nevadensin. Food Chem Toxicol 2022; 164:113006. [PMID: 35436549 DOI: 10.1016/j.fct.2022.113006] [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: 02/08/2022] [Revised: 03/18/2022] [Accepted: 04/07/2022] [Indexed: 02/07/2023]
Abstract
The present study focuses on the association between metabolic capacity and toxicity of the natural occurring flavonoid nevadensin in vitro. Human colon (HT29), liver (HepG2) and bone marrow (KG1) carcinoma cells were used and strong cell line dependent differences in toxic effect strength were found. HepG2 and KG1 cells were more sensitive against nevadensin treatment in comparison to HT29 cells. High resolution mass spectrometry experiments showed that nevadensin is rapidly glucuronidated in HT29 cells, whereas KG1 cells do not metabolize nevadensin, thus glucuronidation was supposed to be a crucial metabolic pathway in vitro. To proof this suggestion, nevadensin glucuronides were isolated from pig liver microsomes und structurally elucidated via NMR spectroscopy. In HepG2 cells a cellular enrichment of nevadensin itself as well as nevadensin-7-O-glucuronide was determined by tandem mass spectrometry. A proteomic screening of uridine 5'-diphospho (UDP)-glucuronosyltransferase (UGT) in HT29 and HepG2 cells provided first hints that the isoforms UGT1A6 and UGT1A1 are responsible for nevadensin glucuronidation. Additionally, nevadensin was found to be a potent SULT inhibitor in HepG2 cells. In sum, the present study clearly illustrates the importance of obtaining detailed information about metabolic competence of cell lines which should be considered in the evaluation of toxic endpoints.
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Affiliation(s)
- Lena Müller
- University of Münster, Institute of Food Chemistry, Corrensstraße 45, 48149, Münster, Germany
| | - Lucas Keuter
- University of Münster, Institute of Food Chemistry, Corrensstraße 45, 48149, Münster, Germany
| | - David Bücksteeg
- University of Münster, Institute of Food Chemistry, Corrensstraße 45, 48149, Münster, Germany
| | - Thomas Uebel
- University of Münster, Institute of Food Chemistry, Corrensstraße 45, 48149, Münster, Germany
| | - Markus Wilken
- University of Münster, Institute of Food Chemistry, Corrensstraße 45, 48149, Münster, Germany
| | - Lina Schürmann
- University of Münster, Institute of Food Chemistry, Corrensstraße 45, 48149, Münster, Germany
| | - Matthias Behrens
- University of Münster, Institute of Food Chemistry, Corrensstraße 45, 48149, Münster, Germany
| | - Hans-Ulrich Humpf
- University of Münster, Institute of Food Chemistry, Corrensstraße 45, 48149, Münster, Germany
| | - Melanie Esselen
- University of Münster, Institute of Food Chemistry, Corrensstraße 45, 48149, Münster, Germany.
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Vissenaekens H, Grootaert C, Raes K, De Munck J, Smagghe G, Boon N, Van Camp J. Quercetin Mitigates Endothelial Activation in a Novel Intestinal-Endothelial-Monocyte/Macrophage Coculture Setup. Inflammation 2022; 45:1600-1611. [PMID: 35352237 DOI: 10.1007/s10753-022-01645-w] [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: 12/03/2021] [Revised: 01/16/2022] [Accepted: 02/03/2022] [Indexed: 11/30/2022]
Abstract
Atherosclerosis initiation is associated with a pro-inflammatory state of the endothelium. Quercetin is a flavonoid abundantly present in plant-based foods, with a possible impact on cardiovascular health. In this study, the effects of quercetin on lipopolysaccharide (LPS)-mediated endothelial inflammation and monocyte adhesion and migration, which are initial steps of the atherogenic process, are studied. Novel in vitro multicellular models simulating the intestinal-endothelial-monocytes/macrophages axis allowed to combine relevant intestinal flavonoid absorption, metabolism and efflux, and the consequent bioactivity towards peripheral endothelial cells. In this triple coculture, quercetin exposure decreased monocyte adhesion to and macrophage migration through an LPS-stressed endothelium, and this was associated with significantly lower levels of soluble vascular cell adhesion molecule-1 (sVCAM-1). Furthermore, quercetin decreased the pro-inflammatory cell environment upon LPS-induced endothelial activation, in terms of tumor necrosis factor- α (TNF-α), interleukin-6 (IL-6), interleukin-8 (IL-8), and sVCAM-1 expression. These findings highlight a mode-of-action by which quercetin may positively impact the initial states of atherosclerosis under more physiologically relevant conditions in terms of quercetin concentrations, metabolites, and intercellular crosstalk.
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Affiliation(s)
- Hanne Vissenaekens
- Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Ghent, Belgium.,Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium
| | - Charlotte Grootaert
- Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Ghent, Belgium
| | - Katleen Raes
- Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Ghent, Belgium
| | - Julie De Munck
- Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Ghent, Belgium
| | - Guy Smagghe
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium
| | - Nico Boon
- Center for Microbial Ecology and Technology (CMET), Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium
| | - John Van Camp
- Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Ghent, Belgium.
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7
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Jia Y, Cai S, Muhoza B, Qi B, Li Y. Advance in dietary polyphenols as dipeptidyl peptidase-IV inhibitors to alleviate type 2 diabetes mellitus: aspects from structure-activity relationship and characterization methods. Crit Rev Food Sci Nutr 2021:1-16. [PMID: 34652225 DOI: 10.1080/10408398.2021.1989659] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Dietary polyphenols with great antidiabetic effects are the most abundant components in edible products. Dietary polyphenols have attracted attention as dipeptidyl peptidase-IV (DPP-IV) inhibitors and indirectly improve insulin secretion. The DPP-IV inhibitory activities of dietary polyphenols depend on their structural diversity. Screening methods that can be used to rapidly and accurately identify potential polyphenol DPP-IV inhibitors are urgently needed. This review focuses on the relationship between the structures of dietary polyphenols and their DPP-IV inhibitory effects. Different characterization methods used for polyphenols as DPP-IV inhibitors have been summarized and compared. We conclude that the position and number of hydroxyl groups, methoxy groups, glycosylated groups, and the extent of conjugation influence the efficiency of inhibition of DPP-IV. Various combinations of methods, such as in-vitro enzymatic inhibition, ex-vivo/in-vivo enzymatic inhibition, cell-based in situ, and in-silico virtual screening, are used to evaluate the DPP-IV inhibitory effects of dietary polyphenols. Further investigations of polyphenol DPP-IV inhibitors will improve the bioaccessibility and bioavailability of these bioactive compounds. Exploration of (i) dietary polyphenols derived from multiple targets, that can prevent diabetes, and (ii) actual binding interactions via multispectral analysis, to understand the binding interactions in the complexes, is required.
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Affiliation(s)
- Yijia Jia
- College of Food Science, Northeast Agricultural University, Harbin, China
| | - Shengbao Cai
- Faculty of Agriculture and Food, Yunnan Institute of Food Safety, Kunming University of Science and Technology, Kunming, Yunnan Province, China
| | - Bertrand Muhoza
- College of Food Science, Northeast Agricultural University, Harbin, China
| | - Baokun Qi
- College of Food Science, Northeast Agricultural University, Harbin, China.,Heilongjiang Green Food Science Research Institute, Harbin, China.,National Research Center of Soybean Engineering and Technology, Harbin, China
| | - Yang Li
- College of Food Science, Northeast Agricultural University, Harbin, China.,Heilongjiang Green Food Science Research Institute, Harbin, China.,National Research Center of Soybean Engineering and Technology, Harbin, China
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8
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Extraction Processes Affect the Composition and Bioavailability of Flavones from Lamiaceae Plants: A Comprehensive Review. Processes (Basel) 2021. [DOI: 10.3390/pr9091675] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Lamiaceae plants are a widespread family of herbaceous plants with around 245 plant genera and nearly 22,576 species distributed in the world. Some of the most representative and widely studied Lamiaceae plants belong to the Ocimum, Origanum, Salvia, and Thymus genera. These plants are a rich source of bioactive molecules such as terpenes, flavonoids, and phenolic acids. In this sense, there is a subgroup of flavonoids classified as flavones. Flavones have antioxidant, anti-inflammatory, anti-cancer, and anti-diabetic potential; thus, efficient extraction techniques from their original plant matrixes have been developed. Currently, conventional extraction methods involving organic solvents are no longer recommended due to their environmental consequences, and new environmentally friendly techniques have been developed. Moreover, once extracted, the bioactivity of flavones is highly linked to their bioavailability, which is often neglected. This review aims to comprehensively gather recent information (2011–2021) regarding extraction techniques and their important relationship with the bioavailability of flavones from Lamiaceae plants including Salvia, Ocimum, Thymus, and Origanum.
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9
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Hinman SS, Huling J, Wang Y, Wang H, Bretherton RC, DeForest CA, Allbritton NL. Magnetically-propelled fecal surrogates for modeling the impact of solid-induced shear forces on primary colonic epithelial cells. Biomaterials 2021; 276:121059. [PMID: 34412014 PMCID: PMC8405591 DOI: 10.1016/j.biomaterials.2021.121059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 07/16/2021] [Accepted: 08/04/2021] [Indexed: 12/27/2022]
Abstract
The colonic epithelium is continuously exposed to an array of biological and mechanical stimuli as its luminal contents are guided over the epithelial surface through regulated smooth muscle contraction. In this report, the propulsion of solid fecal contents over the colonic epithelium is recapitulated through noninvasive actuation of magnetic agarose hydrogels over primary intestinal epithelial cultures, in contrast to the vast majority of platforms that apply shear forces through liquid microflow. Software-controlled magnetic stepper motors enable experimental control over the frequency and velocity of these events to match in vivo propulsive contractions, while the integration of standardized well plate spacing facilitates rapid integration into existing assay pipelines. The application of these solid-induced shear forces did not deleteriously affect cell monolayer surface coverage, viability, or transepithelial electrical resistance unless the device parameters were raised to a 50× greater contraction frequency and 4× greater fecal velocity than those observed in healthy humans. At a frequency and velocity that is consistent with average human colonic motility, differentiation of the epithelial cells into absorptive and goblet cell phenotypes was not affected. Protein secretion was modulated with a two-fold increase in luminal mucin-2 secretion and a significant reduction in basal interleukin-8 secretion. F-actin, zonula occludens-1, and E-cadherin were each present in their proper basolateral locations, similar to those of static control cultures. While cellular height was unaffected by magnetic agarose propulsion, several alterations in lateral morphology were observed including decreased circularity and compactness, and an increase in major axis length, which align with surface epithelial cell morphologies observed in vivo and may represent early markers of luminal exfoliation. This platform will be of widespread utility for the investigation of fecal propulsive forces on intestinal physiology, shedding light on how the colonic epithelium responds to mechanical cues.
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Affiliation(s)
- Samuel S Hinman
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Jennifer Huling
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina State University, Raleigh, NC, USA
| | - Yuli Wang
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Hao Wang
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Ross C Bretherton
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Cole A DeForest
- Department of Bioengineering, University of Washington, Seattle, WA, USA; Department of Chemical Engineering, University of Washington, Seattle, WA, USA
| | - Nancy L Allbritton
- Department of Bioengineering, University of Washington, Seattle, WA, USA.
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10
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Dutton JS, Hinman SS, Kim R, Attayek PJ, Maurer M, Sims CS, Allbritton NL. Hyperglycemia minimally alters primary self-renewing human colonic epithelial cells while TNFα-promotes severe intestinal epithelial dysfunction. Integr Biol (Camb) 2021; 13:139-152. [PMID: 33989405 PMCID: PMC8204630 DOI: 10.1093/intbio/zyab008] [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: 12/10/2020] [Revised: 03/06/2021] [Accepted: 04/16/2021] [Indexed: 11/15/2022]
Abstract
Hyperglycemia is thought to increase production of inflammatory cytokines and permeability of the large intestine. Resulting intestinal inflammation is then often characterized by excess secretion of tumor necrosis factor alpha (TNFα). Thus, hyperglycemia in hospitalized patients suffering from severe trauma or disease is frequently accompanied by TNFα secretion, and the combined impact of these insults on the intestinal epithelium is poorly understood. This study utilized a simple yet elegant model of the intestinal epithelium, comprised of primary human intestinal stem cells and their differentiated progeny, to investigate the impact of hyperglycemia and inflammatory factors on the colonic epithelium. When compared to epithelium cultured under conditions of physiologic glucose, cells under hyperglycemic conditions displayed decreased mucin-2 (MUC2), as well as diminished alkaline phosphatase (ALP) activity. Conditions of 60 mM glucose potentiated secretion of the cytokine IL-8 suggesting that cytokine secretion during hyperglycemia may be a source of tissue inflammation. TNFα measurably increased secretion of IL-8 and IL-1β, which was enhanced at 60 mM glucose. Surprisingly, intestinal permeability and paracellular transport were not altered by even extreme levels of hyperglycemia. The presence of TNFα increased MUC2 presence, decreased ALP activity, and negatively impacted monolayer barrier function. When TNFα hyperglycemia and ≤30 mM glucose and were combined, MUC2 and ALP activity remained similar to that of TNFα alone, although synergistic effects were seen at 60 mM glucose. An automated image analysis pipeline was developed to assay changes in properties of the zonula occludens-1 (ZO-1)-demarcated cell boundaries. While hyperglycemia alone had little impact on cell shape and size, cell morphologic properties were extraordinarily sensitive to soluble TNFα. These results suggest that TNFα acted as the dominant modulator of the epithelium relative to glucose, and that control of inflammation rather than glucose may be key to maintaining intestinal homeostasis.
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Affiliation(s)
- Johanna S Dutton
- Joint Department of Biomedical Engineering, University of North Carolina, Chapel Hill, and North Carolina State University, Raleigh, NC, USA
| | - Samuel S Hinman
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Raehyun Kim
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Peter J Attayek
- Joint Department of Biomedical Engineering, University of North Carolina, Chapel Hill, and North Carolina State University, Raleigh, NC, USA
| | - Mallory Maurer
- Joint Department of Biomedical Engineering, University of North Carolina, Chapel Hill, and North Carolina State University, Raleigh, NC, USA
| | - Christopher S Sims
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Nancy L Allbritton
- Department of Bioengineering, University of Washington, Seattle, WA, USA
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11
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Anacleto SL, Milenkovic D, Kroon PA, Needs PW, Lajolo FM, Hassimotto NMA. Citrus flavanone metabolites protect pancreatic-β cells under oxidative stress induced by cholesterol. Food Funct 2021; 11:8612-8624. [PMID: 32959863 DOI: 10.1039/d0fo01839b] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Cholesterol is one of the triggers of oxidative stress in the pancreatic-β cell, generating high levels of reactive oxygen species, which leads to impairment of insulin synthesis and secretion. Bioactive compounds, such as citrus flavanones, which possess anti-inflammatory and antioxidant activities, could reduce oxidative stress in β-cells and improve their function. We describe for the first time the protective effects of the phase-II flavanone metabolites [naringenin 7-O-glucuronide, hesperetin 3'-O-glucuronide, and hesperetin 7-O-glucuronide], and two flavanones-catabolites derived from gut microbiota metabolism [hippuric acid and 3-(4-hydroxyphenyl)propionic acid], on pancreatic β-cell line MIN6 under oxidative stress, at physiologically relevant concentration. Cholesterol reduced cell viability in a dose and time-dependent manner, with an improvement in the presence of the metabolites. Moreover, flavanone metabolites attenuated oxidative stress by reducing levels of lipid peroxides, superoxide anions, and hydrogen peroxide. In response to the reduction of reactive oxygen species, a decrease in superoxide dismutase and glutathione peroxidase activities was observed; these activities were elevated by cholesterol. Moreover, all the flavanone metabolites improved mitochondrial function and insulin secretion, and reduced apoptosis. Flavanone metabolites were found uptake by β-cells, and therefore could be responsible for the observed protective effects. These results demonstrated that circulating phase-II hesperetin and naringenin metabolites, and also phenolics derived from gut microbiota, protect pancreatic-β cells against oxidative stress, leading to an improvement in β-cell function and could be the bioactive molecules derived from the citrus consumption.
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Affiliation(s)
- Sara L Anacleto
- Food Research Center-(FoRC-CEPID) and Department of Food Science and Nutrition, School of Pharmaceutical Science, University of São Paulo, Av. Prof Lineu Prestes 580, Bloco 14, 05508-900 São Paulo, SP, Brazil.
| | - Dragan Milenkovic
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of California, 451 East Health Sciences Drive, 95616, Davis, California, USA and Unité de Nutrition Humaine, INRA, UMR 1019, UNH, CRNH Auvergne, Clermont-Ferrand, Clermont Université, Université d'Auvergne, Clermont-Ferrand, France
| | - Paul A Kroon
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
| | - Paul W Needs
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
| | - Franco Maria Lajolo
- Food Research Center-(FoRC-CEPID) and Department of Food Science and Nutrition, School of Pharmaceutical Science, University of São Paulo, Av. Prof Lineu Prestes 580, Bloco 14, 05508-900 São Paulo, SP, Brazil.
| | - Neuza M A Hassimotto
- Food Research Center-(FoRC-CEPID) and Department of Food Science and Nutrition, School of Pharmaceutical Science, University of São Paulo, Av. Prof Lineu Prestes 580, Bloco 14, 05508-900 São Paulo, SP, Brazil.
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12
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Park HJ, Kim HN, Kim CY, Seo MD, Baek SH. Synergistic Protection by Isoquercitrin and Quercetin against Glutamate-Induced Oxidative Cell Death in HT22 Cells via Activating Nrf2 and HO-1 Signaling Pathway: Neuroprotective Principles and Mechanisms of Dendropanax morbifera Leaves. Antioxidants (Basel) 2021; 10:antiox10040554. [PMID: 33918248 PMCID: PMC8066007 DOI: 10.3390/antiox10040554] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/28/2021] [Accepted: 03/31/2021] [Indexed: 01/18/2023] Open
Abstract
Dendropanax morbifera leaves (DML) have long been used as traditional medicine to treat diverse symptoms in Korea. Ethyl acetate-soluble extracts of DML (DMLE) rescued HT22 mouse hippocampal neuronal cells from glutamate (Glu)-induced oxidative cell death; however, the protective compounds and mechanisms remain unknown. Here, we aimed to identify the neuroprotective ingredients and mechanisms of DMLE in the Glu-HT22 cell model. Five antioxidant compounds were isolated from DMLE and characterized as chlorogenic acid, hyperoside, isoquercitrin, quercetin, and rutin by spectroscopic methods. Isoquercitrin and quercetin significantly inhibited Glu-induced oxidative cell death by restoring intracellular reactive oxygen species (ROS) levels and mitochondrial superoxide generation, Ca2+ dysregulation, mitochondrial dysfunction, and nuclear translocation of apoptosis-inducing factor. These two compounds significantly increased the expression levels of nuclear factor erythroid-2-related factor 2 (Nrf2) and heme oxygenase 1 (HO-1) in the presence or absence of Glu treatment. Combinatorial treatment of the five compounds based on the equivalent concentrations in DMLE showed that significant protection was found only in the cells cotreated with isoquercitrin and quercetin, both of whom showed prominent synergism, as assessed by drug–drug interaction analysis. These findings suggest that isoquercitrin and quercetin are the active principles representing the protective effects of DMLE, and these effects were mediated by the Nrf2/HO-1 pathway.
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Affiliation(s)
- Hye-Jin Park
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Korea; (H.-J.P.); (H.-N.K.)
| | - Ha-Neul Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Korea; (H.-J.P.); (H.-N.K.)
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Korea
| | - Chul Young Kim
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan-si 15588, Korea;
| | - Min-Duk Seo
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Korea; (H.-J.P.); (H.-N.K.)
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Korea
- Correspondence: (M.-D.S.); (S.-H.B.)
| | - Seung-Hoon Baek
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Korea; (H.-J.P.); (H.-N.K.)
- Correspondence: (M.-D.S.); (S.-H.B.)
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13
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Alfarafisa NM, Kitaguchi K, Yabe T. Diospyros kaki extract protects myoblasts from oxidative stress-induced cytotoxicity via secretions derived from intestinal epithelium. Biosci Biotechnol Biochem 2021; 85:430-439. [PMID: 33604620 DOI: 10.1093/bbb/zbaa048] [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: 07/14/2020] [Accepted: 08/31/2020] [Indexed: 12/25/2022]
Abstract
Under oxidative stress, reactive oxygen species (ROS) alter signal transduction and induce macromolecular damage in cells. Such oxidative damage can lead to sarcopenia, an age-related syndrome characterized by a progressive loss of mass and strength of skeletal muscles. Because food components do not directly come in contact with muscle cells, we focused on the effects of secretions produced by stimulated intestinal epithelial cells on oxidative stress in myoblast cells. An extract of Diospyros kaki was fractionated using different concentrations of ethanol. Each fraction showed different levels of antioxidant and phenolic compounds. The biological activity was evaluated using a Caco-2 cell coculture system. Secretions from Caco-2 cells exposed to 0.5 mg/mL D. kaki extract attenuated the oxidative stress-induced reduction of C2C12 cell viability, suggesting that the D. kaki extract could stimulate intestinal epithelial cells to produce secretions that reduce oxidative stress in myoblasts in vitro.
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Affiliation(s)
| | - Kohji Kitaguchi
- Department of Applied Life Science, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
| | - Tomio Yabe
- The United Graduate School of Agricultural Science, Gifu University, Gifu, Japan.,Department of Applied Life Science, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan.,Center for Highly Advanced Integration of Nano and Life Sciences (G-CHAIN), Gifu University, Gifu, Japan
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14
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Hai Y, Zhang Y, Liang Y, Ma X, Qi X, Xiao J, Xue W, Luo Y, Yue T. Advance on the absorption, metabolism, and efficacy exertion of quercetin and its important derivatives. FOOD FRONTIERS 2020. [DOI: 10.1002/fft2.50] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Affiliation(s)
- Yu Hai
- College of Food Science and Technology Northwest University Xi'an Shaanxi P. R. China
| | - Yuanxiao Zhang
- School of Chemical Engineering Northwest University Xi'an Shaanxi P. R. China
| | - Yingzhi Liang
- College of Food Science and Technology Northwest University Xi'an Shaanxi P. R. China
| | - Xiaoyu Ma
- College of Life Science Northwest University Xi'an Shaanxi P. R. China
| | - Xiao Qi
- College of Food Science and Technology Northwest University Xi'an Shaanxi P. R. China
| | - Jianbo Xiao
- Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Faculty of Food Science and Technology University of Vigo ‐ Ourense Campus Ourense E‐32004 Spain
| | - Weiming Xue
- School of Chemical Engineering Northwest University Xi'an Shaanxi P. R. China
| | - Yane Luo
- College of Food Science and Technology Northwest University Xi'an Shaanxi P. R. China
| | - Tianli Yue
- College of Food Science and Technology Northwest University Xi'an Shaanxi P. R. China
- Laboratory of Quality and Safety Risk Assessment for Agro‐products (Yangling) Ministry of Agriculture Beijing P. R. China
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15
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Radić K, Vinković Vrček I, Pavičić I, Čepo DV. Cellular Antioxidant Activity of Olive Pomace Extracts: Impact of Gastrointestinal Digestion and Cyclodextrin Encapsulation. Molecules 2020; 25:molecules25215027. [PMID: 33138271 PMCID: PMC7663658 DOI: 10.3390/molecules25215027] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/26/2020] [Accepted: 10/27/2020] [Indexed: 12/31/2022] Open
Abstract
Olive pomace is a valuable secondary raw material rich in polyphenols, left behind after the production of olive oil. The present study investigated the protective effect of a polyphenolic extract from olive pomace (OPE) on cell viability and antioxidant defense of cultured human HepG2 cells submitted to oxidative stress induced by tert-butylhydroperoxide (tBOOH). The investigation considered possible matrix effects, impact of gastrointestinal digestion and cyclodextrin (CD) encapsulation. Pre-treatment of cells with OPE prevented cell damage and increased intracellular glutathione but did not affect the activity of glutathione peroxidase and superoxide dismutase. OPE matrix significantly enhanced cell protective effects of major antioxidants, such as hydroxytyrosol (HTS), while cyclodextrin encapsulation enhanced activity of OPE against intracellular reactive oxygen species (ROS) accumulation. The obtained results show that OPE is more potent antioxidant in comparison to equivalent dose of main polyphenols (HTS and TS) and that increasing solubility of OPE polyphenols by CD encapsulation or digestion enhances their potential to act as intracellular antioxidants. Antioxidative protection of cells by OPE was primarily achieved through direct radical-scavenging/reducing actions rather than activation of endogenous defense systems in the cell.
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Affiliation(s)
- Kristina Radić
- Faculty of Pharmacy and Biochemistry, University of Zagreb, Ante Kovačića 1, 10000 Zagreb, Croatia;
| | - Ivana Vinković Vrček
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10001 Zagreb, Croatia; (I.V.V.); (I.P.)
| | - Ivan Pavičić
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10001 Zagreb, Croatia; (I.V.V.); (I.P.)
| | - Dubravka Vitali Čepo
- Faculty of Pharmacy and Biochemistry, University of Zagreb, Ante Kovačića 1, 10000 Zagreb, Croatia;
- Correspondence: ; Tel.: +385-1-6394-771
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16
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Chanjitwiriya K, Roytrakul S, Kunthalert D. Quercetin negatively regulates IL-1β production in Pseudomonas aeruginosa-infected human macrophages through the inhibition of MAPK/NLRP3 inflammasome pathways. PLoS One 2020; 15:e0237752. [PMID: 32817626 PMCID: PMC7446918 DOI: 10.1371/journal.pone.0237752] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 07/31/2020] [Indexed: 01/02/2023] Open
Abstract
Pseudomonas aeruginosa remains a leading cause of nosocomial and serious life-threatening infections, and contributes to increased mortality in immunocompromised individuals. P. aeruginosa infection triggers host immune response and often provokes potent inflammatory mediators, which do not necessarily eradicate the causative pathogen. On the other hand, it causes severe airway damage and eventually decreased lung function. Such unfavorable outcomes of inflammatory injury have necessitated the development of novel effective agents that can combat with P. aeruginosa-mediated inflammation. Herein, we investigated the potential of quercetin in regulating P. aeruginosa-induced inflammation, with particular emphasized on the interleukin-1β (IL-1β). Our results showed that quercetin exerted the potent inhibitory activity against the production of IL-1β in macrophages infected by live P. aeruginosa PAO1, without exhibiting cytotoxicity. According to our settings, such the potent inhibitory activity of quercetin was clearly demonstrated through its ability to efficiently inhibit IL-1β during P. aeruginosa infection, pre- or even post-infection. In addition, quercetin strongly suppressed MAPK signaling pathway by inhibiting phosphorylation of the p38 MAPK and JNK2, and molecular docking study supported well with this observation. Moreover, quercetin reduced the NLRP3 expression and inhibited the P. aeruginosa-mediated cleavage of caspase-1 as well as mature IL-1β. These results thus indicated that quercetin inhibition of P. aeruginosa-induced IL-1β production is mediated by suppressing the initial priming step and by inhibiting the NLRP3 inflammasome activation. Taken together, our findings demonstrated the promising regulatory activity of quercetin against IL-1β production in P. aeruginosa-infected macrophages, and indicated that quercetin has the potential to be effective as a novel therapeutic agent for treatment of P. aeruginosa-induced inflammation.
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Affiliation(s)
- Kasem Chanjitwiriya
- Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Sittiruk Roytrakul
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Thailand Science Park, Pathumthani, Thailand
| | - Duangkamol Kunthalert
- Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
- Centre of Excellence in Medical Biotechnology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
- * E-mail: ,
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17
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Barberis A, Deiana M, Spissu Y, Azara E, Fadda A, Serra PA, D’hallewin G, Pisano M, Serreli G, Orrù G, Scano A, Steri D, Sanjust E. Antioxidant, Antimicrobial, and Other Biological Properties of Pompia Juice. Molecules 2020; 25:molecules25143186. [PMID: 32668641 PMCID: PMC7397052 DOI: 10.3390/molecules25143186] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/03/2020] [Accepted: 07/09/2020] [Indexed: 12/13/2022] Open
Abstract
Pompia is a Citrus species belonging to Sardinian endemic biodiversity. Health benefits were attributed to its flavedo rind extracts and essential oils while the juice qualities have never been investigated. In this paper, the antioxidant, antimicrobial, and other biological properties of Pompia juice were studied. A combined LCMS/electrochemical/biological approach was used to clarify a still debated phylogeny of this species and to explain the role of its juice phenolic compounds. A closer phylogenetic relationship with lemon and citron, rather than oranges was suggested. Sensors-based electrochemical measures, together with LCMS qualitative and quantitative analyses, revealed a high contribution of ascorbic acid and phenolics with low redox potential, isorhamnetin 3-O-rutinoside, diosmin, and diosmetin 6,8-diglucoside, to antioxidant capacity. The biological assays demonstrated a marked effect of low concentration of Pompia juice against reactive oxygen species (ROS) starting from 50 µg mL−1, and a moderate capacity to reduce ROS damages on cell membrane. Treatments with Pompia juice also resulted in a significant reduction (20%) of the metabolic activity of SW48 colon cancer cells. Lastly, MIC, MBC, and MBIC antimicrobial assays demonstrated that Pompia and lemon juices have inhibitory and antibiofilm effects against the pathogenic bacteria Pseudomonas aeruginosa, Streptococcus aureus, and Enterococcus faecalis.
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Affiliation(s)
- Antonio Barberis
- Institute of Sciences of Food Production, National Research Council, 07100 Sassari, Italy; (Y.S.); (A.F.); (P.A.S.); (G.D.); (G.O.)
- Correspondence: (A.B.); (E.S.); Tel.: +39-079-2841710 (A.B.)
| | - Monica Deiana
- Department of Biomedical Sciences, University of Cagliari, 09100 Cagliari, Italy; (M.D.); (G.S.)
| | - Ylenia Spissu
- Institute of Sciences of Food Production, National Research Council, 07100 Sassari, Italy; (Y.S.); (A.F.); (P.A.S.); (G.D.); (G.O.)
| | - Emanuela Azara
- Institute of Biomolecular Chemistry, National Research Council, 07100 Sassari, Italy; (E.A.); (M.P.)
| | - Angela Fadda
- Institute of Sciences of Food Production, National Research Council, 07100 Sassari, Italy; (Y.S.); (A.F.); (P.A.S.); (G.D.); (G.O.)
| | - Pier Andrea Serra
- Institute of Sciences of Food Production, National Research Council, 07100 Sassari, Italy; (Y.S.); (A.F.); (P.A.S.); (G.D.); (G.O.)
- Department of Medical, Surgical and Experimental Medicine, University of Sassari, 07100 Sassari, Italy
| | - Guy D’hallewin
- Institute of Sciences of Food Production, National Research Council, 07100 Sassari, Italy; (Y.S.); (A.F.); (P.A.S.); (G.D.); (G.O.)
| | - Marina Pisano
- Institute of Biomolecular Chemistry, National Research Council, 07100 Sassari, Italy; (E.A.); (M.P.)
| | - Gabriele Serreli
- Department of Biomedical Sciences, University of Cagliari, 09100 Cagliari, Italy; (M.D.); (G.S.)
| | - Germano Orrù
- Institute of Sciences of Food Production, National Research Council, 07100 Sassari, Italy; (Y.S.); (A.F.); (P.A.S.); (G.D.); (G.O.)
- Department of Surgical Sciences, Molecular Biology Service, University of Cagliari, 09100 Cagliari, Italy;
| | - Alessandra Scano
- Department of Surgical Sciences, Molecular Biology Service, University of Cagliari, 09100 Cagliari, Italy;
| | | | - Enrico Sanjust
- Department of Biomedical Sciences, University of Cagliari, 09100 Cagliari, Italy; (M.D.); (G.S.)
- Correspondence: (A.B.); (E.S.); Tel.: +39-079-2841710 (A.B.)
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18
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Ban C, Park JB, Cho S, Kim HR, Kim YJ, Bae H, Kim C, Kang H, Jang D, Shin YS, Kim DO, Kim H, Kweon DH. Characterization of Ginkgo biloba Leaf Flavonoids as Neuroexocytosis Regulators. Molecules 2020; 25:molecules25081829. [PMID: 32316426 PMCID: PMC7221681 DOI: 10.3390/molecules25081829] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/12/2020] [Accepted: 04/15/2020] [Indexed: 01/26/2023] Open
Abstract
Ginkgo biloba leaf (GBL) is known as a potential source of bioactive flavonoids, such as quercetin, arresting the neuronal soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE)-zippering. Here, the GBL flavonoids were isolated in two different manners and then examined for their bioactivity, physicochemical stability, and biocompatibility. The majority of flavonoids in the non-hydrolyzed and acidolyzed isolates, termed non-hydrolyzed isolate (NI) and acidolyzed isolate (AI) hereafter, were rich in flavonol glycosides and aglycones, respectively. Glycosidic/aglyconic quercetin and kaempferol were abundant in both NI and AI, whereas a little of apigenin, luteolin, and isorhamnetin were found in AI. NI was more thermostable in all pH ranges than quercetin, kaempferol, and AI. NI and AI both inhibited neurotransmitter release from differentiated neuronal PC-12 cells. NI and AI showed 1/2–1/3 lower EC50/CC50 values than quercetin and kaempferol. The NI and AI exhibited no toxicity assessed by the tests on chorioallantoic membranes of hen’s eggs, removing toxicological concerns of irritation potential. Moreover, GBL isolates, particularly AI, showed antioxidant and anti-inflammatory activities in the use below the CC50 levels. Taken together, these results suggest that GBL isolates that are rich in antioxidant flavonoids are effective anti-neuroexocytotic agents with high stability and low toxicity.
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Affiliation(s)
- Choongjin Ban
- Institute of Biomolecule Control and Institute of Biologics, Sungkyunkwan University, Suwon 16419, Gyeonggi, Korea;
| | - Joon-Bum Park
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon 16419, Gyeonggi, Korea; (J.-B.P.); (H.R.K.); (Y.J.K.)
| | - Sora Cho
- Interdisciplinary Program in BioCosmetics, Sungkyunkwan University, Suwon 16419, Gyeonggi, Korea;
| | - Hye Rin Kim
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon 16419, Gyeonggi, Korea; (J.-B.P.); (H.R.K.); (Y.J.K.)
| | - Yong Joon Kim
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon 16419, Gyeonggi, Korea; (J.-B.P.); (H.R.K.); (Y.J.K.)
| | - Hyungjin Bae
- C&I lab, Kolmar Korea Co., Ltd., Seoul 06792, Korea; (H.B.); (C.K.); (H.K.)
| | - Chinhan Kim
- C&I lab, Kolmar Korea Co., Ltd., Seoul 06792, Korea; (H.B.); (C.K.); (H.K.)
| | - Hakhee Kang
- C&I lab, Kolmar Korea Co., Ltd., Seoul 06792, Korea; (H.B.); (C.K.); (H.K.)
| | - Davin Jang
- Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Gyeonggi, Korea; (D.J.); (Y.S.S.)
| | - Yong Sub Shin
- Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Gyeonggi, Korea; (D.J.); (Y.S.S.)
| | - Dae-Ok Kim
- Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Gyeonggi, Korea; (D.J.); (Y.S.S.)
- Department of Food Science and Biotechnology, Kyung Hee University, Yongin 17104, Gyeonggi, Korea
- Correspondence: (D.-O.K.); (H.K.); (D.-H.K.); Tel.: +82-31-201-3796 (D.-O.K.); +82-31-290-7821 (H.K.); +82-31-299-4850 (D.-H.K.)
| | - Hyunggun Kim
- Department of Biomechatronic Engineering, Sungkyunkwan University, Suwon 16419, Gyeonggi, Korea
- Correspondence: (D.-O.K.); (H.K.); (D.-H.K.); Tel.: +82-31-201-3796 (D.-O.K.); +82-31-290-7821 (H.K.); +82-31-299-4850 (D.-H.K.)
| | - Dae-Hyuk Kweon
- Institute of Biomolecule Control and Institute of Biologics, Sungkyunkwan University, Suwon 16419, Gyeonggi, Korea;
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon 16419, Gyeonggi, Korea; (J.-B.P.); (H.R.K.); (Y.J.K.)
- Interdisciplinary Program in BioCosmetics, Sungkyunkwan University, Suwon 16419, Gyeonggi, Korea;
- Correspondence: (D.-O.K.); (H.K.); (D.-H.K.); Tel.: +82-31-201-3796 (D.-O.K.); +82-31-290-7821 (H.K.); +82-31-299-4850 (D.-H.K.)
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19
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Chen X, He Z, Wu X, Mao D, Feng C, Zhang J, Chen G. Comprehensive study of the interaction between Puerariae Radix flavonoids and DNA: From theoretical simulation to structural analysis to functional analysis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 231:118109. [PMID: 32062512 DOI: 10.1016/j.saa.2020.118109] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 01/21/2020] [Accepted: 01/22/2020] [Indexed: 06/10/2023]
Abstract
Puerariae Radix (PR) is a natural herb whose active ingredient is mainly flavonoids. To explore the interaction between PR flavonoids and DNA not only has important biological implications for understanding the mechanism of action, but also helps develop PR products for the design of appropriate dietary interventions to aid cancer treatment. In this work, we comprehensively studied the interaction between six kinds of PR flavonoids and DNA from four different and progressive levels, including molecular docking, multi-spectral analysis, and functional analysis in vitro and in cell. Results show that the DNA binding affinity of six flavonoids is in an order of quercetin > formononetin > daidzein > puerarin > 4'-methoxy puerarin > puerarin 6″-O-xyloside (POS), in which quercetin can significantly inhibit DNA amplification owing to its strongest binding affinity. The binding between quercetin and DNA is further revealed to be intercalated binding, which can cause conformational changes in DNA, thereby exhibiting an activity of cell cycle arrest and anti-proliferative. This property of quercetin can be utilized for the further development of flavonoids with anticancer activity. In addition to the potential application, this work also provides a platform for the comprehensive study of the interaction between micromolecules and DNA.
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Affiliation(s)
- Xu Chen
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, PR China; Experimental Center for Life Sciences, Shanghai University, Shanghai, PR China
| | - Ziyu He
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, PR China
| | - Xianyong Wu
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, PR China
| | - Dongsheng Mao
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, PR China
| | - Chang Feng
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, PR China
| | - Juan Zhang
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, PR China
| | - Guifang Chen
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, PR China.
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20
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Thunbergia laurifolia Leaf Extract Increased Levels of Antioxidant Enzymes and Protected Human Cell-Lines In Vitro Against Cadmium. Antioxidants (Basel) 2020; 9:antiox9010047. [PMID: 31935795 PMCID: PMC7022844 DOI: 10.3390/antiox9010047] [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: 11/28/2019] [Revised: 12/23/2019] [Accepted: 12/28/2019] [Indexed: 01/24/2023] Open
Abstract
Thunbergia laurifolia or Rang Jued has been used as an herbal tea and in folk medicine as a detoxifying agent. Cd contamination is globally widespread and a serious public health problem. The aim of this study was to determine the endogenous antioxidant enzyme activities and malondialdehyde (MDA) production of the crude dried extract (CDE) of T. laurifolia leaves, using human embryonic kidney (HEK293) and human liver (HepG2) cells as in vitro models. Moreover, the cytotoxicity including anti-cadmium (Cd) toxicity in both cells were measured. The experimental design had 3 treatment groups with combined, pre-, and post-treatments for investigating the anti-Cd toxicity, and cell viability was determined with MTT test (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide). The CDE showed low cytotoxicity and increased catalase (CAT) and glutathione peroxidase (GPx) activities with decreased malondialdehyde (MDA) levels in both cell types. It was found that the CDE protected against Cd-induced toxicity in both cell types, and a synergistic combination therapy effect was seen when CaNa2EDTA, a chelating agent, was applied. Therefore, CDE can protect against Cd-induced oxidative stress in cells, possibly due to its antioxidant properties. Moreover, using the extract or drinking the herbal tea together with chelating agent should have an efficacy advantage over using the CDE or the chelating agent singly.
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21
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Chen X, Wu X, He Z, Zhang J, Cao Y, Mao D, Feng C, Tian B, Chen G. Molecular docking-assisted design and synthesis of an anti-tumor quercetin–Se( iv) complex. NEW J CHEM 2020. [DOI: 10.1039/c9nj06136c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Design and synthesis of an anti-tumor quercetin–Se(iv) complex under the guidance of molecular docking and visualized DNA binding activity.
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Affiliation(s)
- Xu Chen
- Center for Molecular Recognition and Biosensing
- School of Life Sciences
- Shanghai University
- Shanghai
- P. R. China
| | - Xianyong Wu
- Center for Molecular Recognition and Biosensing
- School of Life Sciences
- Shanghai University
- Shanghai
- P. R. China
| | - Ziyu He
- Center for Molecular Recognition and Biosensing
- School of Life Sciences
- Shanghai University
- Shanghai
- P. R. China
| | - Juan Zhang
- Center for Molecular Recognition and Biosensing
- School of Life Sciences
- Shanghai University
- Shanghai
- P. R. China
| | - Ya Cao
- Center for Molecular Recognition and Biosensing
- School of Life Sciences
- Shanghai University
- Shanghai
- P. R. China
| | - Dongsheng Mao
- Center for Molecular Recognition and Biosensing
- School of Life Sciences
- Shanghai University
- Shanghai
- P. R. China
| | - Chang Feng
- Center for Molecular Recognition and Biosensing
- School of Life Sciences
- Shanghai University
- Shanghai
- P. R. China
| | - Bo Tian
- Center for Molecular Recognition and Biosensing
- School of Life Sciences
- Shanghai University
- Shanghai
- P. R. China
| | - Guifang Chen
- Center for Molecular Recognition and Biosensing
- School of Life Sciences
- Shanghai University
- Shanghai
- P. R. China
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Gonzalez-Alfonso JL, Peñalver P, Ballesteros AO, Morales JC, Plou FJ. Effect of α-Glucosylation on the Stability, Antioxidant Properties, Toxicity, and Neuroprotective Activity of (-)-Epigallocatechin Gallate. Front Nutr 2019; 6:30. [PMID: 30968027 PMCID: PMC6438877 DOI: 10.3389/fnut.2019.00030] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 03/01/2019] [Indexed: 12/12/2022] Open
Abstract
(–)-Epigallocatechin gallate (EGCG), the predominant catechin (≥50%) in green tea (Camellia sinensis), displays several bioactive properties but its stability and bioavailability are low. In this work, the properties of two α-glucosyl derivatives of EGCG (3′- and 7-O-α-D-glucopyranoside), obtained by enzymatic synthesis, were assessed. The α-glucosylation enhanced the pH and thermal stability of EGCG. The analysis of scavenging activity toward ABTS·+ radicals showed that the α-glucosylation at C-7 of A-ring caused a higher loss of antioxidant activity compared with the sugar conjugation at C-3′ of B-ring. The 3′-glucoside also showed higher potential to alleviate intracellular reactive oxygen species (ROS) levels and to boost REDOX activity. The toxicity of EGCG and its monoglucosides was tested in human SH-S5Y5 neurons, RAW 264.7 macrophages, MRC5 fibroblasts, and HT-29 colon cancer cells. Interestingly, the 3′-O-α-D-glucoside increased the viability of neural cells in vitro (2.75-fold at 100 μM) in the presence of H2O2, whilst EGCG gave rise only to a 1.7-fold enhancement. In conclusion, the α-glucoside of EGCG at C-3′ has a great potential for nutraceutical, cosmetic and biomedical applications.
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Affiliation(s)
| | - Pablo Peñalver
- Instituto de Parasitología y Biomedicina López-Neyra, CSIC, Granada, Spain
| | | | - Juan C Morales
- Instituto de Parasitología y Biomedicina López-Neyra, CSIC, Granada, Spain
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23
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Wielogorska E, Blaszczyk K, Chevallier O, Connolly L. The origin of in-vitro estrogen-like activity in oregano herb extracts. Toxicol In Vitro 2019; 56:101-109. [PMID: 30641124 DOI: 10.1016/j.tiv.2019.01.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 01/09/2019] [Accepted: 01/10/2019] [Indexed: 12/19/2022]
Abstract
Global market of herbs has been struggling with food adulteration issues. A number of assays have been developed to aid the detection of the tampered samples and ensure high quality of the marketed products. However, herbs are marketed not only for their culinary applications but also as remedies due to high levels of biologically active constituents. Nevertheless, there is no information in the literature about the influence of herbs adulteration on the biological activity of the final product. Current study aims at assessing the influence of oregano adulteration on its in-vitro estrogen-like activity. High responses in a mammalian reporter gene assay have been detected in pure and adulterated samples, translating to 21-7409 ng of 17β-estradiol equivalents per gram of oregano. The origin of those responses was assessed by combining fractionation and UHPLC-HRMS. Three flavones were proposed as the most active extract constituents i.e. luteolin-glucoside, luteolin- and apigenin-glucuronides all of which have been previously identified in other herbal extracts with estrogenic activity. This study underlines challenges of biological activity assessment in complex herbal extracts as well as the need for further assessment of such supplement administrations in the case of postmenopausal women and breast cancer patients undergoing hormone therapy.
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Affiliation(s)
- Ewa Wielogorska
- School of Pharmacy, Queen's University Belfast, Northern Ireland, United Kingdom; Institute for Global Food Security, Advanced ASSET Centre, School of Biological Sciences, Queen's University Belfast, Northern Ireland, United Kingdom.
| | - Katarzyna Blaszczyk
- Institute for Global Food Security, Advanced ASSET Centre, School of Biological Sciences, Queen's University Belfast, Northern Ireland, United Kingdom
| | - Olivier Chevallier
- Mass Spectrometry Core Technology Unit, Queen's University Belfast, Northern Ireland, United Kingdom
| | - Lisa Connolly
- School of Pharmacy, Queen's University Belfast, Northern Ireland, United Kingdom
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24
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González-Alfonso JL, Míguez N, Padilla JD, Leemans L, Poveda A, Jimnez-Barbero J, Ballesteros AO, Sandoval G, Plou FJ. Optimization of Regioselective α-Glucosylation of Hesperetin Catalyzed by Cyclodextrin Glucanotransferase. Molecules 2018; 23:molecules23112885. [PMID: 30400664 PMCID: PMC6278433 DOI: 10.3390/molecules23112885] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 10/30/2018] [Accepted: 11/01/2018] [Indexed: 12/28/2022] Open
Abstract
The regioselective α-glucosylation of hesperetin was achieved by a transglycosylation reaction catalyzed by cyclodextrin glucanotransferase (CGTase) from Thermoanaerobacter sp. using soluble starch as glucosyl donor. By combining mass spectrometry (ESI-TOF) and 2D-NMR analysis, the main monoglucosylated derivative was fully characterized (hesperetin 7-O-α-d-glucopyranoside). In order to increase the yield of monoglucoside, several reaction parameters were optimized: Nature and percentage of cosolvent, composition of the aqueous phase, glucosyl donor, temperature, and the concentrations of hesperetin and soluble starch. Under the optimal conditions, which included the presence of 30% of bis(2-methoxyethyl) ether as cosolvent, the maximum concentration of monoglucoside was approximately 2 mM, obtained after 24 h of reaction. To our knowledge, this is the first report of direct glucosylation of hesperetin employing free enzymes instead of whole cells.
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Affiliation(s)
| | - Noa Míguez
- Instituto de Catálisis y Petroleoquímica, CSIC, 28049 Madrid, Spain.
| | - J Daniel Padilla
- Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco (CIATEJ), Guadalajara 44270, Jalisco, Mexico.
| | - Laura Leemans
- Instituto de Catálisis y Petroleoquímica, CSIC, 28049 Madrid, Spain.
| | - Ana Poveda
- Center for Cooperative Research in Biosciences, Parque Científico Tecnológico de Bizkaia, 48160 Derio, Biscay, Spain.
| | - Jesús Jimnez-Barbero
- Center for Cooperative Research in Biosciences, Parque Científico Tecnológico de Bizkaia, 48160 Derio, Biscay, Spain.
| | | | - Georgina Sandoval
- Instituto de Catálisis y Petroleoquímica, CSIC, 28049 Madrid, Spain.
- Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco (CIATEJ), Guadalajara 44270, Jalisco, Mexico.
| | - Francisco J Plou
- Instituto de Catálisis y Petroleoquímica, CSIC, 28049 Madrid, Spain.
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25
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β-Cyclodextrin Does not Alter the Bioaccessibility and the Uptake by Caco-2 Cells of Olive By-Product Phenolic Compounds. Nutrients 2018; 10:nu10111653. [PMID: 30400310 PMCID: PMC6266305 DOI: 10.3390/nu10111653] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 10/26/2018] [Accepted: 10/29/2018] [Indexed: 12/25/2022] Open
Abstract
Alperujo—a two-phase olive mill waste that is composed of olive vegetation water and solid skin, pulp, and seed fragments - is a highly valuable olive by-product due to its high content in phenolic compounds. In this study, we assessed whether β-cyclodextrin (β-CD), which is used to extract and protect alpejuro phenolic compounds (hydroxytyrosol-O-glucoside, tyrosol, caffeic, and p-coumaric acids) could impact on their bioaccessibility (i.e., the percentage of molecule found in the aqueous phase of the digesta) and uptake by intestinal cells, by using an in vitro digestion model and Caco-2 TC7 cells in culture, respectively. Our results showed that β-CD did not change the bioaccessibility of the selected phenols. Hydroxytyrosol-O-glucoside and caffeic did not cross Caco-2 cell monolayers. Conversely ferulic acid, identified as the main caffeic acid intestinal metabolite, was absorbed through intestinal cell monolayers (~20%). Interestingly, β-CD moderately but significantly improved the local absorption of tyrosol and p-coumaric acid (2.3 + 1.4% and 8.5 ± 4.2%, respectively, p < 0.05), even if their final bioavailability (expressed as bioaccessibility × absorption by Caco-2 cells) was not modified (16.2 ± 0.6% vs. 16.8 ± 0.5% for tyrosol and 32.0 ± 3.2% vs. 37.2 ± 3.2% for p-coumaric acid, from pure alperujo and alperujo complexed with β-CD, respectively). Overall, our results show that β-CD is an interesting extraction and storage agent for phenolic compounds that does not alter their in vitro bioavailability.
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26
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Nikolic M, Sustersic T, Filipovic N. In vitro Models and On-Chip Systems: Biomaterial Interaction Studies With Tissues Generated Using Lung Epithelial and Liver Metabolic Cell Lines. Front Bioeng Biotechnol 2018; 6:120. [PMID: 30234106 PMCID: PMC6129577 DOI: 10.3389/fbioe.2018.00120] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 08/13/2018] [Indexed: 12/20/2022] Open
Abstract
In vitro models are very important in medicine and biology, because they provide an insight into cells' and microorganisms' behavior. Since these cells and microorganisms are isolated from their natural environment, these models may not completely or precisely predict the effects on the entire organism. Improvement in this area is secured by organ-on-a-chip development. The organ-on-a-chip assumes cells cultured in a microfluidic chip. The chip simulates bioactivities, mechanics and physiological behavior of organs or organ systems, generating artificial organs in that way. There are several cell lines used so far for each tested artificial organ. For lungs, mostly used cell lines are 16HBE, A549, Calu-3, NHBE, while mostly used cell lines for liver are HepG2, Hep 3B, TPH1, etc. In this paper, state of the art for lung and liver organ-on-a-chip is presented, together with the established in vitro testing on lung and liver cell lines, with the emphasis on Calu-3 (for lung cell lines) and Hep-G2 (for liver cell lines). Primary focus in this review is to discuss different researches on the topics of lung and liver cell line models, approaches in determining fate and transport, cell partitioning, cell growth and division, as well as cell dynamics, meaning toxicity and effects. The review is finalized with current research gaps and problems, stating potential future developments in the field.
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Affiliation(s)
- Milica Nikolic
- Faculty of Engineering, University of Kragujevac, Kragujevac, Serbia
- Steinbeis Advanced Risk Technologies Institute doo Kragujevac, Kragujevac, Serbia
| | - Tijana Sustersic
- Faculty of Engineering, University of Kragujevac, Kragujevac, Serbia
- Steinbeis Advanced Risk Technologies Institute doo Kragujevac, Kragujevac, Serbia
- Bioengineering Research and Development Center, Kragujevac, Serbia
| | - Nenad Filipovic
- Faculty of Engineering, University of Kragujevac, Kragujevac, Serbia
- Steinbeis Advanced Risk Technologies Institute doo Kragujevac, Kragujevac, Serbia
- Bioengineering Research and Development Center, Kragujevac, Serbia
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27
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Gonzalez-Alfonso JL, Leemans L, Poveda A, Jimenez-Barbero J, Ballesteros AO, Plou FJ. Efficient α-Glucosylation of Epigallocatechin Gallate Catalyzed by Cyclodextrin Glucanotransferase from Thermoanaerobacter Species. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:7402-7408. [PMID: 29939740 DOI: 10.1021/acs.jafc.8b02143] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The glycosylation of plant polyphenols may modulate their solubility and bioavailability and protect these molecules from oxygen, light degradation, and during gastrointestinal transit. In this work, the synthesis of various α-glucosyl derivatives of (-)-epigallocatechin gallate, the predominant catechin in green tea, was performed in water at 50 °C by a transglycosylation reaction catalyzed by cyclodextrin glycosyltransferase from Thermoanaerobacter sp. The molecular weight of reaction products was determined by high-performance liquid chromatography coupled to mass spectrometry. Using hydrolyzed potato starch as a glucosyl donor, two main monoglucosides were obtained with conversion yields of 58 and 13%, respectively. The products were isolated and chemically characterized by combining two-dimensional nuclear magnetic resonance methods. The major derivative was epigallocatechin gallate 3'- O-α-d-glucopyranoside (1), and the minor derivative was epigallocatechin gallate 7- O-α-d-glucopyranoside (2).
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Affiliation(s)
- Jose L Gonzalez-Alfonso
- Instituto de Catálisis y Petroleoquímica , Consejo Superior de Investigaciones Científicas (CSIC) , 28049 Madrid , Spain
| | - Laura Leemans
- Instituto de Catálisis y Petroleoquímica , Consejo Superior de Investigaciones Científicas (CSIC) , 28049 Madrid , Spain
| | - Ana Poveda
- Center for Cooperative Research in Biosciences , Parque Científico Tecnológico de Bizkaia , 48160 Derio , Biscay , Spain
| | - Jesús Jimenez-Barbero
- Center for Cooperative Research in Biosciences , Parque Científico Tecnológico de Bizkaia , 48160 Derio , Biscay , Spain
- Ikerbasque , Basque Foundation for Science , Maria Diaz de Haro 13 , 48009 Bilbao , Spain
| | - Antonio O Ballesteros
- Instituto de Catálisis y Petroleoquímica , Consejo Superior de Investigaciones Científicas (CSIC) , 28049 Madrid , Spain
| | - Francisco J Plou
- Instituto de Catálisis y Petroleoquímica , Consejo Superior de Investigaciones Científicas (CSIC) , 28049 Madrid , Spain
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28
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Cyanidin Stimulates Insulin Secretion and Pancreatic β-Cell Gene Expression through Activation of l-type Voltage-Dependent Ca 2+ Channels. Nutrients 2017; 9:nu9080814. [PMID: 28788070 PMCID: PMC5579608 DOI: 10.3390/nu9080814] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 07/25/2017] [Accepted: 07/26/2017] [Indexed: 12/11/2022] Open
Abstract
Cyanidin is a natural anthocyanidin present in fruits and vegetables with anti-diabetic properties including stimulation of insulin secretion. However, its mechanism of action remains unknown. In this study, we elucidated the mechanisms of cyanidin for stimulatory insulin secretion from pancreatic β-cells. Rat pancreatic β-cells INS-1 were used to investigate the effects of cyanidin on insulin secretion, intracellular Ca2+ signaling, and gene expression. We detected the presence of cyanidin in the intracellular space of β-cells. Cyanidin stimulated insulin secretion and increased intracellular Ca2+ signals in a concentration-dependent manner. The Ca2+ signals were abolished by nimodipine, an l-type voltage-dependent Ca2+ channel (VDCC) blocker or under extracellular Ca2+ free conditions. Stimulation of cells with cyanidin activated currents typical for VDCCs and up-regulated the expression of glucose transporter 2 (GLUT2), Kir6.2, and Cav1.2 genes. Our findings indicate that cyanidin diffuses across the plasma membrane, leading to activation of l-type VDCCs. The increase in intracellular Ca2+ stimulated insulin secretion and the expression of genes involved in this process. These findings suggest that cyanidin could be used as a promising agent to stimulate insulin secretion.
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29
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Structural insight for the recognition of G-quadruplex structure at human c-myc promoter sequence by flavonoid Quercetin. Sci Rep 2017; 7:3600. [PMID: 28620169 PMCID: PMC5472631 DOI: 10.1038/s41598-017-03906-3] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 05/11/2017] [Indexed: 12/21/2022] Open
Abstract
Small molecule ligands that could stabilize G-quadruplex structure formed at the promoter region of human c-myc oncogene will regulate its expression in cancer cells. Flavonoids, a group of naturally available small molecule, have been known for their various promising effects on human health. In present study, we have performed detailed biophysical studies for the interaction of human c-myc G-quadruplex DNA with nine representative flavonoids: Luteolin, Quercetin, Rutin, Genistein, Kaempferol, Puerarin, Hesperidin, Myricetin and Daidzein. We found by using fluorescence titration that Quercetin interacts with c-myc G-quadruplex DNA sequence Pu24T with highest affinity. This interaction was further explored by using NMR spectroscopy and we have derived the first solution structure for the complex formed between Quercetin and biologically significant c-myc promoter DNA sequence forming G-quadruplex structure. In present solution structure, Quercetin stacks at 5' and 3' G-tetrads of Pu24T G-quadruplex structure and stabilize it via π-π stacking interactions. Furthermore, in vitro studies on HeLa cells suggested that Quercetin induces apoptosis-mediated cell death and down-regulated c-myc gene expression. This study emphasizes the potential of flavonoids as a promising candidate for targeting c-myc promoter region and thus, could act as a potential anti-cancer agent.
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30
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Micro- and nano bio-based delivery systems for food applications: In vitro behavior. Adv Colloid Interface Sci 2017; 243:23-45. [PMID: 28395856 DOI: 10.1016/j.cis.2017.02.010] [Citation(s) in RCA: 131] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 02/10/2017] [Accepted: 02/13/2017] [Indexed: 01/02/2023]
Abstract
Micro- and nanoencapsulation is an emerging technology in the food field that potentially allows the improvement of food quality and human health. Bio-based delivery systems of bioactive compounds have a wide variety of morphologies that influence their stability and functional performance. The incorporation of bioactive compounds in food products using micro- and nano-delivery systems may offer extra health benefits, beyond basic nutrition, once their encapsulation may provide protection against undesired environmental conditions (e.g., heat, light and oxygen) along the food chain (including processing and storage), thus improving their bioavailability, while enabling their controlled release and target delivery. This review provides an overview of the bio-based materials currently used for encapsulation of bioactive compounds intended for food applications, as well as the main production techniques employed in the development of micro- and nanosystems. The behavior of such systems and of bioactive compounds entrapped into, throughout in vitro gastrointestinal systems, is also tracked in a critical manner. Comparisons between various in vitro digestion systems (including the main advantages and disadvantages) currently in use, as well as correlations between the behavior of micro- and nanosystems studied through in vitro and in vivo systems were highlighted and discussed here for the first time. Finally, examples of bioactive micro- and nanosystems added to food simulants or to real food matrices are provided, together with a revision of the main challenges for their safe commercialization, the regulatory issues involved and the main legislation aspects.
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31
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Mros S, Carne A, Ha M, Bekhit AED, Young W, McConnell M. Comparison of the bioactivity of whole and skimmed digested sheep milk with that of digested goat and cow milk in functional cell culture assays. Small Rumin Res 2017. [DOI: 10.1016/j.smallrumres.2017.02.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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