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Zhu W, Xiong L, Oteiza PI. Structure-dependent capacity of procyanidin dimers to inhibit inflammation-induced barrier dysfunction in a cell model of intestinal epithelium. Redox Biol 2024; 75:103275. [PMID: 39059205 PMCID: PMC11327484 DOI: 10.1016/j.redox.2024.103275] [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: 06/25/2024] [Revised: 07/16/2024] [Accepted: 07/18/2024] [Indexed: 07/28/2024] Open
Abstract
Diet is of major importance in modulating intestinal inflammation, as the gastrointestinal tract is directly exposed to high concentrations of dietary components. Procyanidins are flavan-3-ol oligomers abundant in fruits and vegetables. Although with limited or no intestinal absorption, they can have GI health benefits which can promote overall health. We previously observed that epicatechin gallate (ECG) and epigallocatechin gallate (EGCG) dimers inhibit in vitro colorectal cancer cell proliferation and invasiveness. Inflammation-mediated intestinal barrier permeabilization can result in a chronic inflammatory condition and promote colorectal cancer onset/progression. Thus, this study investigated the structure-dependent capacity of ECG, EGCG and (-)-epicatechin (EC) dimers to inhibit tumor necrosis factor alpha (TNFα)-induced inflammation, oxidative stress, and loss of barrier integrity in Caco-2 cells differentiated into an intestinal epithelial cell monolayer. Cells were incubated with TNFα (10 ng/ml), in the absence/presence of ECG, EGCG and EC dimers. The three dimers inhibited TNFα-mediated Caco-2 cell monolayer permeabilization, modulating events involved in the loss of barrier function and inflammation, i.e. decreased tight junction protein levels; increased matrix metalloproteinases expression and activity; increased NADPH oxidase expression and oxidant production; activation of the NF-κB and ERK1/2 pathways and downstream events leading to tight junction opening. For some of these mechanisms, the galloylated ECG and EGCG dimers had stronger protective potency than the non-galloylated EC dimer. These differences could be due to differential membrane interactions as pointed out by molecular dynamics simulation of procyanidin dimers-cell membrane interactions and/or by differential interactions with NOX1. Results show that dimeric procyanidins, although poorly absorbed, can promote health by alleviating intestinal inflammation, oxidative stress and barrier permeabilization.
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Affiliation(s)
- Wei Zhu
- Department of Nutrition, University of California, Davis, CA, 95618, USA
| | - Le Xiong
- Cleveland Clinic, Cleveland, OH, 44194, USA
| | - Patricia I Oteiza
- Department of Nutrition, University of California, Davis, CA, 95618, USA; Department of Environmental Toxicology, University of California, Davis, CA, 95618, USA.
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2
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Kruk A, Popowski D, Roszko MŁ, Granica S, Piwowarski JP. Heterogeneity of transport and metabolism of Tormentillae rhizoma constituents across human intestinal epithelium cellular model. Food Res Int 2024; 188:114326. [PMID: 38823825 DOI: 10.1016/j.foodres.2024.114326] [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: 01/30/2024] [Revised: 03/29/2024] [Accepted: 04/16/2024] [Indexed: 06/03/2024]
Abstract
Tormentilla erecta (L.) Raeusch is a widespread plant in Europe and Western Asia. Its rhizomes (Tormentilae rhizoma) are the main ingredient of herbal alcoholic beverages and can be used as a natural preservative in beer production. Apart from its unique taste qualities, therapeutic properties in gastrointestinal tract ailments are attributed to the tincture obtained from Tormentillae rhizoma. The presented research aimed to determine the mutual relationship between the components of Tormentillae tincture, present in popular alcoholic beverages, and intestinal epithelium (Caco-2 cell monolayers). A comprehensive qualitative and quantitative analysis of the tincture was performed, including the determination of condensed and hydrolyzable tannins as well as triterpenoids (UHPLC-DAD-MS/MS). Incubation of the tincture with Caco-2 monolayers has shown that only triterpenes pass through the monolayer, while condensed tannins are mainly bound to the monolayer surface. Ellagic acid derivatives were the only components of the Tormentillae tinctura being metabolized by cell monolayers to the compounds not previously described in the literature, which may be crucial in the treatment of intestinal diseases with inflammatory background.
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Affiliation(s)
- Aleksandra Kruk
- Microbiota Lab, Department of Pharmaceutical Biology, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1 Street, 02-097 Warsaw, Poland.
| | - Dominik Popowski
- Microbiota Lab, Department of Pharmaceutical Biology, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1 Street, 02-097 Warsaw, Poland; Department of Food Analysis, Institute of Agricultural and Food Biotechnology - State Research Institute, Rakowiecka 36 Street, 02-532 Warsaw, Poland.
| | - Marek Ł Roszko
- Department of Food Analysis, Institute of Agricultural and Food Biotechnology - State Research Institute, Rakowiecka 36 Street, 02-532 Warsaw, Poland.
| | - Sebastian Granica
- Department of Pharmaceutical Biology, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1 Street, 02-097 Warsaw, Poland.
| | - Jakub P Piwowarski
- Microbiota Lab, Department of Pharmaceutical Biology, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1 Street, 02-097 Warsaw, Poland.
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3
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Erazo-Oliveras A, Muñoz-Vega M, Salinas ML, Wang X, Chapkin RS. Dysregulation of cellular membrane homeostasis as a crucial modulator of cancer risk. FEBS J 2024; 291:1299-1352. [PMID: 36282100 PMCID: PMC10126207 DOI: 10.1111/febs.16665] [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: 06/18/2022] [Revised: 09/09/2022] [Accepted: 10/24/2022] [Indexed: 11/07/2022]
Abstract
Cellular membranes serve as an epicentre combining extracellular and cytosolic components with membranous effectors, which together support numerous fundamental cellular signalling pathways that mediate biological responses. To execute their functions, membrane proteins, lipids and carbohydrates arrange, in a highly coordinated manner, into well-defined assemblies displaying diverse biological and biophysical characteristics that modulate several signalling events. The loss of membrane homeostasis can trigger oncogenic signalling. More recently, it has been documented that select membrane active dietaries (MADs) can reshape biological membranes and subsequently decrease cancer risk. In this review, we emphasize the significance of membrane domain structure, organization and their signalling functionalities as well as how loss of membrane homeostasis can steer aberrant signalling. Moreover, we describe in detail the complexities associated with the examination of these membrane domains and their association with cancer. Finally, we summarize the current literature on MADs and their effects on cellular membranes, including various mechanisms of dietary chemoprevention/interception and the functional links between nutritional bioactives, membrane homeostasis and cancer biology.
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Affiliation(s)
- Alfredo Erazo-Oliveras
- Program in Integrative Nutrition and Complex Diseases; Texas A&M University; College Station, Texas, 77843; USA
- Department of Nutrition; Texas A&M University; College Station, Texas, 77843; USA
| | - Mónica Muñoz-Vega
- Program in Integrative Nutrition and Complex Diseases; Texas A&M University; College Station, Texas, 77843; USA
- Department of Nutrition; Texas A&M University; College Station, Texas, 77843; USA
| | - Michael L. Salinas
- Program in Integrative Nutrition and Complex Diseases; Texas A&M University; College Station, Texas, 77843; USA
- Department of Nutrition; Texas A&M University; College Station, Texas, 77843; USA
| | - Xiaoli Wang
- Program in Integrative Nutrition and Complex Diseases; Texas A&M University; College Station, Texas, 77843; USA
- Department of Nutrition; Texas A&M University; College Station, Texas, 77843; USA
| | - Robert S. Chapkin
- Program in Integrative Nutrition and Complex Diseases; Texas A&M University; College Station, Texas, 77843; USA
- Department of Nutrition; Texas A&M University; College Station, Texas, 77843; USA
- Center for Environmental Health Research; Texas A&M University; College Station, Texas, 77843; USA
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4
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Alkafaas SS, Abdallah AM, Hassan MH, Hussien AM, Elkafas SS, Loutfy SA, Mikhail A, Murad OG, Elsalahaty MI, Hessien M, Elshazli RM, Alsaeed FA, Ahmed AE, Kamal HK, Hafez W, El-Saadony MT, El-Tarabily KA, Ghosh S. Molecular docking as a tool for the discovery of novel insight about the role of acid sphingomyelinase inhibitors in SARS- CoV-2 infectivity. BMC Public Health 2024; 24:395. [PMID: 38321448 PMCID: PMC10848368 DOI: 10.1186/s12889-024-17747-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 01/11/2024] [Indexed: 02/08/2024] Open
Abstract
Recently, COVID-19, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and its variants, caused > 6 million deaths. Symptoms included respiratory strain and complications, leading to severe pneumonia. SARS-CoV-2 attaches to the ACE-2 receptor of the host cell membrane to enter. Targeting the SARS-CoV-2 entry may effectively inhibit infection. Acid sphingomyelinase (ASMase) is a lysosomal protein that catalyzes the conversion of sphingolipid (sphingomyelin) to ceramide. Ceramide molecules aggregate/assemble on the plasma membrane to form "platforms" that facilitate the viral intake into the cell. Impairing the ASMase activity will eventually disrupt viral entry into the cell. In this review, we identified the metabolism of sphingolipids, sphingolipids' role in cell signal transduction cascades, and viral infection mechanisms. Also, we outlined ASMase structure and underlying mechanisms inhibiting viral entry 40 with the aid of inhibitors of acid sphingomyelinase (FIASMAs). In silico molecular docking analyses of FIASMAs with inhibitors revealed that dilazep (S = - 12.58 kcal/mol), emetine (S = - 11.65 kcal/mol), pimozide (S = - 11.29 kcal/mol), carvedilol (S = - 11.28 kcal/mol), mebeverine (S = - 11.14 kcal/mol), cepharanthine (S = - 11.06 kcal/mol), hydroxyzin (S = - 10.96 kcal/mol), astemizole (S = - 10.81 kcal/mol), sertindole (S = - 10.55 kcal/mol), and bepridil (S = - 10.47 kcal/mol) have higher inhibition activity than the candidate drug amiodarone (S = - 10.43 kcal/mol), making them better options for inhibition.
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Affiliation(s)
- Samar Sami Alkafaas
- Molecular Cell Biology Unit, Division of Biochemistry, Department of Chemistry, Faculty of Science, Tanta University, Tanta, 31527, Egypt.
| | - Abanoub Mosaad Abdallah
- Narcotic Research Department, National Center for Social and Criminological Research (NCSCR), Giza, 11561, Egypt
| | - Mai H Hassan
- Molecular Cell Biology Unit, Division of Biochemistry, Department of Chemistry, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Aya Misbah Hussien
- Biotechnology department at Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt
| | - Sara Samy Elkafas
- Production Engineering and Mechanical Design Department, Faculty of Engineering, Menofia University, Menofia, Egypt
- Faculty of Control System and Robotics, ITMO University, Saint-Petersburg, 197101, Russia
| | - Samah A Loutfy
- Virology and Immunology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Cairo, Egypt
- Nanotechnology Research Center, British University, Cairo, Egypt
| | - Abanoub Mikhail
- Department of Physics, Faculty of Science, Minia University, Minia, Egypt
- Faculty of Physics, ITMO University, Saint Petersburg, Russia
| | - Omnia G Murad
- Division of Biochemistry, Department of Chemistry, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Mohamed I Elsalahaty
- Division of Biochemistry, Department of Chemistry, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Mohamed Hessien
- Molecular Cell Biology Unit, Division of Biochemistry, Department of Chemistry, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Rami M Elshazli
- Biochemistry and Molecular Genetics Unit, Department of Basic Sciences, Faculty of Physical Therapy, Horus University - Egypt, New Damietta, 34517, Egypt
| | - Fatimah A Alsaeed
- Department of Biology, College of Science, King Khalid University, Muhayl, Saudi Arabia
| | - Ahmed Ezzat Ahmed
- Biology Department, College of Science, King Khalid University, Abha, 61413, Saudi Arabia
| | - Hani K Kamal
- Anatomy and Histology, Faculty of Pharmacy, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Wael Hafez
- NMC Royal Hospital, 16Th Street, 35233, Khalifa City, Abu Dhabi, United Arab Emirates
- Medical Research Division, Department of Internal Medicine, The National Research Centre, 12622, 33 El Buhouth St, Ad Doqi, Dokki, Cairo Governorate, Egypt
| | - Mohamed T El-Saadony
- Department of Agricultural Microbiology, Faculty of Agriculture, Zagazig University, Zagazig, 44511, Egypt
| | - Khaled A El-Tarabily
- Department of Biology, College of Science, United Arab Emirates University, Al-Ain, 15551, United Arab Emirates
| | - Soumya Ghosh
- Department of Genetics, Faculty of Natural and Agricultural Sciences, University of the Free State, Bloemfontein, 9301, South Africa
- Natural & Medical Science Research Center, University of Nizwa, Nizwa, Oman
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Zhu W, Oteiza PI. NADPH oxidase 1: A target in the capacity of dimeric ECG and EGCG procyanidins to inhibit colorectal cancer cell invasion. Redox Biol 2023; 65:102827. [PMID: 37516013 PMCID: PMC10410180 DOI: 10.1016/j.redox.2023.102827] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/20/2023] [Accepted: 07/21/2023] [Indexed: 07/31/2023] Open
Abstract
Colorectal cancer (CRC) is prevalent worldwide. Dietary consumption of procyanidins has been linked to a reduced risk of developing CRC. The epidermal growth factor (EGF) receptor (EGFR) signaling pathway is frequently dysregulated in CRC. Our earlier research showed that the procyanidin dimers of epicatechin gallate (ECG) and epigallocatechin gallate (EGCG), through their interaction with lipid rafts, inhibit the EGFR signaling pathway and decrease CRC cell growth. The process of cancer cell invasion and metastasis involves matrix metalloproteinases (MMPs), which are partially EGFR-regulated. This study investigated whether ECG and EGCG dimers can inhibit EGF-induced CRC cell invasion by suppressing the redox-regulated activation of the EGFR/MMPs pathway. Both dimers mitigated EGF-induced cell invasion and the associated increase of MMP-2/9 expression and activity in different CRC cell lines. In Caco-2 cells, both dimers inhibited the activation of the EGFR and downstream of NF-κB, ERK1/2 and Akt, which was associated with decreased MMP-2/9 transcription. EGF induced a rapid NOX1-dependent oxidant increase, which was diminished by both ECG and EGCG dimers and NOX inhibitors (apocynin, Vas-2870, DPI). Both dimers inhibited NOX1 gene expression, as well as NOX1 activity with evidence of direct binding to NOX1. Both dimers, all NOX chemical inhibitors and NOX1 silencing inhibited EGF-mediated activation of the EGFR signaling pathway and the increased MMP-2/9 mRNA levels and activity. Pointing to the relevance of NOX1 on ECG and EGCG dimer effects on CRC invasiveness, silencing of NOX1 also inhibited EGF-stimulated Caco-2 cell invasion. In summary, ECG and EGCG dimers can act inhibiting CRC cell invasion/metastasis both, by downregulating MMP-2 and MMP-9 expression via a NOX1/EGFR-dependent mechanism, and through a direct inhibitory effect on MMPs enzyme activity.
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Affiliation(s)
- Wei Zhu
- Department of Nutrition, University of California, Davis, CA, USA
| | - Patricia I Oteiza
- Department of Nutrition, University of California, Davis, CA, USA; Department of Environmental Toxicology, University of California, Davis, CA, USA.
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6
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Zhu W, Oteiza PI. Proanthocyanidins at the gastrointestinal tract: mechanisms involved in their capacity to mitigate obesity-associated metabolic disorders. Crit Rev Food Sci Nutr 2022; 64:220-240. [PMID: 35943169 DOI: 10.1080/10408398.2022.2105802] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The prevalence of overweight and obesity is continually increasing worldwide. Obesity is a major public health concern given the multiple associated comorbidities. Finding dietary approaches to prevent/mitigate these conditions is of critical relevance. Proanthocyanidins (PACs), oligomers or polymers of flavan-3-ols that are extensively distributed in nature, represent a major part of total dietary polyphenols. Although current evidence supports the capacity of PACs to mitigate obesity-associated comorbidities, the underlying mechanisms remain speculative due to the complexity of PACs' structure. Given their limited bioavailability, the major site of the biological actions of intact PACs is the gastrointestinal (GI) tract. This review discusses the actions of PACs at the GI tract which could underlie their anti-obesity effects. These mechanisms include: i) inhibition of digestive enzymes at the GI lumen, including pancreatic lipase, α-amylase, α-glucosidase; ii) modification of gut microbiota composition; iii) modulation of inflammation- and oxidative stress-triggered signaling pathways, e.g. NF-κB and MAPKs; iv) protection of the GI barrier integrity. Further understanding of the mechanisms and biological activities of PACs at the GI tract can contribute to develop nutritional and pharmacological strategies oriented to mitigate the serious comorbidities of obesity.
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Affiliation(s)
- Wei Zhu
- Department of Nutrition, University of California, Davis, California, USA
- Department of Environmental Toxicology, University of California, Davis, California, USA
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Patricia I Oteiza
- Department of Nutrition, University of California, Davis, California, USA
- Department of Environmental Toxicology, University of California, Davis, California, USA
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Villalaín J. Procyanidin C1 Location, Interaction, and Aggregation in Two Complex Biomembranes. MEMBRANES 2022; 12:membranes12070692. [PMID: 35877895 PMCID: PMC9319219 DOI: 10.3390/membranes12070692] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 06/29/2022] [Accepted: 07/04/2022] [Indexed: 01/25/2023]
Abstract
Procyanidins are known for their many benefits to human health and show a plethora of biological effects. One of the most important procyanidin is the procyanidin trimer C1 (PC1). Due to its relatively high lipid–water partition coefficient, the properties of PC1 could be attributed to its capability to interact with the biomembrane, to modulate its structure and dynamics, and to interact with lipids and proteins, however, its biological mechanism is not known. We have used all-atom molecular dynamics in order to determine the position of PC1 in complex membranes and the presence of its specific interactions with membrane lipids, having simulated a membrane mimicking the plasma membrane and another mimicking the mitochondrial membrane. PC1 has a tendency to be located at the membrane interphase, with part of the molecule exposed to the water solvent and part of it reaching the first carbons of the hydrocarbon chains. It has no preferred orientation, and it completely excludes the CHOL molecule. Remarkably, PC1 has a tendency to spontaneously aggregate, forming high-order oligomers. These data suggest that its bioactive properties could be attributed to its membranotropic effects, which therefore supports the development of these molecules as therapeutic molecules, which would open new opportunities for future medical advances.
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Affiliation(s)
- José Villalaín
- Institute of Research, Development, and Innovation in Healthcare Biotechnology (IDiBE), Universidad Miguel Hernández, E-03202 Elche, Spain
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Wang R, Zhu W, Dang M, Deng X, Shi X, Zhang Y, Li K, Li C. Targeting Lipid Rafts as a Rapid Screening Strategy for Potential Antiadipogenic Polyphenols along with the Structure-Activity Relationship and Mechanism Elucidation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:3872-3885. [PMID: 35302782 DOI: 10.1021/acs.jafc.2c00444] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Obesity is a global public health problem that endangers human health, and a rapid search for compounds with antiadipogenic activity could provide solutions to overcome this problem. Polyphenols are potential antiadipogenic compounds, but the screening strategy, structure-activity relationship (SAR), and elucidation of their mechanisms of action remain poorly understood because of the high diversity of polyphenols. Lipid rafts, enriched with sphingolipids and cholesterol, are considered a potential target of polyphenols for the regulation of cellular processes and diseases. Here, a novel rapid screening active polyphenol strategy that targets the lipid rafts using molecular dynamic simulation was developed and validated by 3T3-L1 preadipocyte assay. The screening strategy is high-throughput, inexpensive, reagent-free, and effort saving. In addition, the SAR and mechanisms of action mediating the differentiation-inhibition of the preadipocyte by polyphenols were well elucidated by utilizing multiple technologies, such as "raft-like liposomes" systems, giant plasma membrane vesicles, noninvasive lipid raft probes, and ultrahigh-resolution microscopy. High inhibitory-activity polyphenols could penetrate deeper into the hydrophobic lipid center, in an inverted V-shaped manner or by insertion of galloyl groups into rafts, thus disrupting the ordered domain of lipid rafts. In contrast, the medium and low inhibitory-activity polyphenols could only localize on the surface of lipid rafts, exerting slight and the weakest interference with a lipid raft structure, respectively. The combined use of reliable technologies could yield new knowledge on the SAR and the molecular mechanisms of polyphenols.
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Affiliation(s)
- Ruifeng Wang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Wei Zhu
- Department of Nutrition, University of California, Davis, California 95616-5270, United States
| | - Meizhu Dang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Xiangyi Deng
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Xin Shi
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Yajie Zhang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Kaikai Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Chunmei Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Key Laboratory of Environment Correlative Food Science, Ministry of Education, Huazhong Agricultural University, Wuhan, Hubei 430070, China
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Proanthocyanidins and Where to Find Them: A Meta-Analytic Approach to Investigate Their Chemistry, Biosynthesis, Distribution, and Effect on Human Health. Antioxidants (Basel) 2021; 10:antiox10081229. [PMID: 34439477 PMCID: PMC8389005 DOI: 10.3390/antiox10081229] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 12/22/2022] Open
Abstract
Proanthocyanidins (PACs) are a class of polyphenolic compounds that are attracting considerable interest in the nutraceutical field due to their potential health benefits. However, knowledge about the chemistry, biosynthesis, and distribution of PACs is limited. This review summarizes the main chemical characteristics and biosynthetic pathways and the main analytical methods aimed at their identification and quantification in raw plant matrices. Furthermore, meta-analytic approaches were used to identify the main plant sources in which PACs were contained and to investigate their potential effect on human health. In particular, a cluster analysis identified PACs in 35 different plant families and 60 different plant parts normally consumed in the human diet. On the other hand, a literature search, coupled with forest plot analyses, highlighted how PACs can be actively involved in both local and systemic effects. Finally, the potential mechanisms of action through which PACs may impact human health were investigated, focusing on their systemic hypoglycemic and lipid-lowering effects and their local anti-inflammatory actions on the intestinal epithelium. Overall, this review may be considered a complete report in which chemical, biosynthetic, ecological, and pharmacological aspects of PACs are discussed.
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Wang R, Dang M, Zhu W, Li C. Galloyl Group in B-type Proanthocyanidin Dimers Was Responsible for Its Differential Inhibitory Activity on 3T3-L1 Preadipocytes due to the Strong Lipid Raft-Perturbing Potency. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:5216-5225. [PMID: 33891410 DOI: 10.1021/acs.jafc.1c00364] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The effects of three B-type proanthocyanidin (PA) dimers covering procyanidin B2 (B-0g), procyanidin B2 3'-O-gallate (B-1g), and procyanidin B2 3,3'-di-O-gallate (B-2g) on 3T3-L1 preadipocyte differentiation and the underlying mechanisms were investigated. The results showed that digalloylated B-type PA dimers (B-2g) strongly inhibited 3T3-L1 preadipocyte differentiation through disrupting the integrity of the lipid raft structure and inhibiting the expression of peroxisome proliferator-activated receptor gamma (PPARγ) and CCAAT/enhancer-binding protein alpha (C/EBPα) and then downregulating the expression of acetyl-CoA carboxylase (ACC) and fatty acid synthase (FAS) factors, followed by B-1g, while B-0g had little effect. The different inhibitory effects were mainly due to the difference in the B-type PA dimer structure and the ability to interfere with lipid rafts. The greater the galloylation degree of B-type PA dimers, the stronger the ability to disrupt the lipid raft structure and oppose 3T3-L1 preadipocyte differentiation. In addition, galloylated B-type PA dimers had greater molecular hydrophobicity and topological polarity surface area and could penetrate into the lipid rafts to form multiple hydrogen bonds with the rafts by molecular dynamics simulation. These findings highlighted that the strong lipid raft-perturbing potency of galloylated B-type PA dimers was responsible for inhibition of 3T3-L1 preadipocyte differentiation.
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Affiliation(s)
- Ruifeng Wang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Meizhu Dang
- School of Energy and Intelligence Engineering, Henan University of Animal Husbandry and Economy, Zhengzhou, Henan 450000, China
| | - Wei Zhu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Chunmei Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Key Laboratory of Environment Correlative Food Science, Ministry of Education, Huazhong Agricultural University, Wuhanz 430070, China
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McCartney F, Perinelli DR, Tiboni M, Cavanagh R, Lucarini S, Filippo Palmieri G, Casettari L, Brayden DJ. Permeability-enhancing effects of three laurate-disaccharide monoesters across isolated rat intestinal mucosae. Int J Pharm 2021; 601:120593. [PMID: 33857587 DOI: 10.1016/j.ijpharm.2021.120593] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/14/2021] [Accepted: 04/07/2021] [Indexed: 10/21/2022]
Abstract
Laurate (C12)-sucrose esters are established intestinal epithelial permeation enhancers (PEs) with potential for use in oral delivery. Most studies have examined blends of ester rather than specific monoesters, with little variation on the sugar moiety. To investigate the influence of varying the sugar moiety on monoester performance, we compared three monoesters: C12-sucrose, C12-lactose, and C12-trehalose. The assays were: critical micellar concentration (CMC) in Krebs-Henseleit buffer, MTS and lactate dehydrogenase assays in Caco-2 cells, transepithelial electrical resistance (TEER) and apparent permeability coefficient (Papp) of [14C] mannitol across isolated rat intestinal mucosae, and tissue histology. For CMC, the rank order was C12-trehalose (0.21 mM) < C12-sucrose (0.34 mM) < C12-lactose (0.43 mM). Exposure to Caco-2 cells for 120 min produced TC50 values in the MTS assay from 0.1 to 0.4 mM. Each ester produced a concentration-dependent decrease in TEER across rat mucosae with 80% reduction seen with 8 mM in 5 min, but C12-trehalose was less potent. C12-sucrose and C12-lactose increased the Papp of [14C] mannitol across mucosae with similar potency and efficacy, whereas C12-trehalose was not as potent or efficacious, even though it still increased flux. In the presence of the three esters, gross intestinal histology was unaffected except at 8 mM for C12-sucrose and C12-lactose. In conclusion, the three esters enhanced permeability likely via tight junction modulation in rat intestinal tissue. C12-trehalose was not quite as efficacious, but neither did it damage tissue to the same extent. All three can be considered as potential PEs to be included in oral formulations.
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Affiliation(s)
- Fiona McCartney
- UCD School of Veterinary Medicine and UCD Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland
| | - Diego R Perinelli
- School of Pharmacy, University of Camerino, Via Gentile III da Varano, 62032 Camerino, MC, Italy
| | - Mattia Tiboni
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Piazza del Rinascimento, 6, 61029 Urbino, PU, Italy
| | - Robert Cavanagh
- Division of Molecular Therapeutics and Formulation, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Simone Lucarini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Piazza del Rinascimento, 6, 61029 Urbino, PU, Italy
| | | | - Luca Casettari
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Piazza del Rinascimento, 6, 61029 Urbino, PU, Italy.
| | - David J Brayden
- UCD School of Veterinary Medicine and UCD Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland.
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12
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Interaction of drugs with lipid raft membrane domains as a possible target. Drug Target Insights 2021; 14:34-47. [PMID: 33510571 PMCID: PMC7832984 DOI: 10.33393/dti.2020.2185] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 11/11/2020] [Indexed: 01/23/2023] Open
Abstract
Introduction Plasma membranes are not the homogeneous bilayers of uniformly distributed lipids but the lipid complex with laterally separated lipid raft membrane domains, which provide receptor, ion channel and enzyme proteins with a platform. The aim of this article is to review the mechanistic interaction of drugs with membrane lipid rafts and address the question whether drugs induce physicochemical changes in raft-constituting and raft-surrounding membranes. Methods Literature searches of PubMed/MEDLINE and Google Scholar databases from 2000 to 2020 were conducted to include articles published in English in internationally recognized journals. Collected articles were independently reviewed by title, abstract and text for relevance. Results The literature search indicated that pharmacologically diverse drugs interact with raft model membranes and cellular membrane lipid rafts. They could physicochemically modify functional protein-localizing membrane lipid rafts and the membranes surrounding such domains, affecting the raft organizational integrity with the resultant exhibition of pharmacological activity. Raft-acting drugs were characterized as ones to decrease membrane fluidity, induce liquid-ordered phase or order plasma membranes, leading to lipid raft formation; and ones to increase membrane fluidity, induce liquid-disordered phase or reduce phase transition temperature, leading to lipid raft disruption. Conclusion Targeting lipid raft membrane domains would open a new way for drug design and development. Since angiotensin-converting enzyme 2 receptors which are a cell-specific target of and responsible for the cellular entry of novel coronavirus are localized in lipid rafts, agents that specifically disrupt the relevant rafts may be a drug against coronavirus disease 2019.
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13
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Daveri E, Adamo AM, Alfine E, Zhu W, Oteiza PI. Hexameric procyanidins inhibit colorectal cancer cell growth through both redox and non-redox regulation of the epidermal growth factor signaling pathway. Redox Biol 2021; 38:101830. [PMID: 33338921 PMCID: PMC7750420 DOI: 10.1016/j.redox.2020.101830] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 12/04/2020] [Accepted: 12/07/2020] [Indexed: 01/08/2023] Open
Abstract
Dietary proanthocyanidins (PAC) consumption is associated with a decreased risk for colorectal cancer (CRC). Dysregulation of the epidermal growth factor (EGF) receptor (EGFR) signaling pathway is frequent in human cancers, including CRC. We previously showed that hexameric PAC (Hex) exert anti-proliferative and pro-apoptotic actions in human CRC cells. This work investigated if Hex could exert anti-CRC effects through its capacity to regulate the EGFR pathway. In proliferating Caco-2 cells, Hex acted attenuating EGF-induced EGFR dimerization and NADPH oxidase-dependent phosphorylation at Tyr 1068, decreasing EGFR location at lipid rafts, and inhibiting the downstream activation of pro-proliferative and anti-apoptotic pathways, i.e. Raf/MEK/ERK1/2 and PI3K/Akt. Hex also promoted EGFR internalization both in the absence and presence of EGF. While Hex decreased EGFR phosphorylation at Tyr 1068, it increased EGFR Tyr 1045 phosphorylation. The latter provides a docking site for the ubiquitin ligase c-Cbl and promotes EGFR degradation by lysosomes. Importantly, Hex acted synergistically with the EGFR-targeted chemotherapeutic drug Erlotinib, both in their capacity to decrease EGFR phosphorylation and inhibit cell growth. Thus, dietary PAC could exert anti-CRC actions by modulating, through both redox- and non-redox-regulated mechanisms, the EGFR pro-oncogenic signaling pathway. Additionally, Hex could also potentiate the actions of EGFR-targeted drugs.
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Affiliation(s)
- Elena Daveri
- Departments of Nutrition University of California, Davis, 95616, Davis, CA, USA; Departments of Environmental Toxicology, University of California, Davis, 95616, Davis, CA, USA; Unit of Immunotherapy of Human Tumors, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133, Milan, Italy
| | - Ana M Adamo
- Department of Biological Chemistry and IQUIFIB (UBA-CONICET), Facultad de Farmacia y Bioquímica, 1113, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Eugenia Alfine
- Departments of Nutrition University of California, Davis, 95616, Davis, CA, USA; Departments of Environmental Toxicology, University of California, Davis, 95616, Davis, CA, USA
| | - Wei Zhu
- Departments of Nutrition University of California, Davis, 95616, Davis, CA, USA; Departments of Environmental Toxicology, University of California, Davis, 95616, Davis, CA, USA
| | - Patricia I Oteiza
- Departments of Nutrition University of California, Davis, 95616, Davis, CA, USA; Departments of Environmental Toxicology, University of California, Davis, 95616, Davis, CA, USA.
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14
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Wang R, Zhu W, Peng J, Li K, Li C. Lipid rafts as potential mechanistic targets underlying the pleiotropic actions of polyphenols. Crit Rev Food Sci Nutr 2020; 62:311-324. [PMID: 32951435 DOI: 10.1080/10408398.2020.1815171] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Polyphenols have attracted a lot of global attention due to their diverse biological actions against cancer, obesity, and cardiovascular diseases. Although extensive research has been carried out to elucidate the mechanisms of pleiotropic actions of polyphenols, this remains unclear. Lipid rafts are distinct nanodomains enriched in cholesterol and sphingolipids, present in the inner and outer leaflets of cell membranes, forming functional platforms for the regulation of cellular processes and diseases. Recent studies focusing on the interaction between polyphenols and cellular lipid rafts shed new light on the pleiotropic actions of polyphenols. Polyphenols are postulated to interact with lipid rafts in two ways: first, they interfere with the structural integrity of lipid rafts, by disrupting their structure and clustering of the ordered domains; second, they modulate the downstream signaling pathways mediated by lipid rafts, by binding to receptor proteins associated with lipid rafts, such as the 67 kDa laminin receptor (67LR), epidermal growth factor receptor (EGFR), and others. This study aims to elaborate the mechanism of interaction between polyphenols and lipid rafts, and describe pleiotropic preventive effects of polyphenols.
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Affiliation(s)
- Ruifeng Wang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Wei Zhu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jinming Peng
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Kaikai Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Chunmei Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China.,Key Laboratory of Environment Correlative Food Science, Huazhong Agricultural University, Ministry of Education, Wuhan, China
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15
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Inhibition of interaction between Staphylococcus aureus α-hemolysin and erythrocytes membrane by hydrolysable tannins: structure-related activity study. Sci Rep 2020; 10:11168. [PMID: 32636484 PMCID: PMC7341856 DOI: 10.1038/s41598-020-68030-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 06/11/2020] [Indexed: 01/17/2023] Open
Abstract
The objective of the study was a comparative analysis of the antihemolytic activity against two Staphylococcus aureus strains (8325-4 and NCTC 5655) as well as α-hemolysin and of the membrane modifying action of four hydrolysable tannins with different molecular mass and flexibility: 3,6-bis-O-di-O-galloyl-1,2,4-tri-O-galloyl-β-d-glucose (T1), 1,2,3,4,5-penta-O-galloyl-β-d-glucose (T2), 3-O-galloyl-1,2-valoneoyl-β-d-glucose (T3) and 1,2-di-O-galloyl-4,6-valoneoyl-β-d-glucose (T4). We showed that all the compounds studied manifested antihemolytic effects in the range of 5–50 µM concentrations. However, the degree of the reduction of hemolysis by the investigated tannins was not uniform. A valoneoyl group—containing compounds (T3 and T4) were less active. Inhibition of the hemolysis induced by α-hemolysin was also noticed on preincubated with the tannins and subsequently washed erythrocytes. In this case the efficiency again depended on the tannin structure and could be represented by the following order: T1 > T2 > T4 > T3. We also found a relationship between the degree of antihemolytic activity of the tannins studied and their capacity to increase the ordering parameter of the erythrocyte membrane outer layer and to change zeta potential. Overall, our study showed a potential of the T1 and T2 tannins as anti-virulence agents. The results of this study using tannins with different combinations of molecular mass and flexibility shed additional light on the role of tannin structure in activity manifestation.
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16
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Zhu W, Li MC, Wang FR, Mackenzie GG, Oteiza PI. The inhibitory effect of ECG and EGCG dimeric procyanidins on colorectal cancer cells growth is associated with their actions at lipid rafts and the inhibition of the epidermal growth factor receptor signaling. Biochem Pharmacol 2020; 175:113923. [PMID: 32217102 PMCID: PMC7489796 DOI: 10.1016/j.bcp.2020.113923] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 03/19/2020] [Indexed: 02/06/2023]
Abstract
Colorectal cancer (CRC) is one of the most common cancers worldwide. Epidemiological studies indicate that consumption of fruits and vegetables containing procyanidins is associated with lower CRC risk. This study investigated the capacity of two dimeric procyanidins composed of epicatechin gallate (ECG) or epigallocatechin gallate (EGCG) isolated from persimmons, to inhibit CRC cell growth and promote apoptosis, characterizing the underlying mechanisms. ECG and EGCG dimers reduced the growth of five human CRC cell lines in a concentration (10-60 μM)- and time (24-72 h)-dependent manner, with a 72 h-IC50 value in Caco-2 cells of 10 and 30 μM, respectively. ECG and EGCG dimers inhibited Caco-2 cell proliferation by arresting the cell cycle in G2/M phase and by inducing apoptosis via the mitochondrial pathway. In addition, ECG and EGCG dimers inhibited cell migration, invasion, and adhesion, decreasing the activity of matrix metalloproteinases (MMP-2/9). Mechanistically, ECG and EGCG dimers inhibited the activation of lipid raft-associated epidermal growth factor (EGF) receptor (EGFR), without affecting its localization at lipid rafts. In particular, ECG and EGCG dimers reduced EGFR phosphorylation at Tyr1068 residue, prevented EGFR dimerization and activation upon stimulation, and induced EGFR internalization both in the absence and presence of EGF. Furthermore, ECG and EGCG dimers increased EGFR phosphorylation at Tyr1045 residue, providing a docking site for ubiquitin ligase c-Cbl and induced EGFR degradation by the proteasome. Downstream of EGFR, ECG and EGCG dimers inhibited the activation of the MEK/ERK1/2 and PI3K/AKT signaling pathways, downregulating proteins involved in the modulation of cell survival. In conclusion, ECG and EGCG dimers reduced CRC cell growth by inhibiting EGFR activation at multiple steps, including the disruption of lipid rafts integrity and promoting EGFR degradation. These results shed light on a potential molecular mechanism on how procyanidins-rich diets may lower CRC risk.
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Affiliation(s)
- Wei Zhu
- Department of Nutrition, University of California, Davis, CA, USA; Department of Environmental Toxicology, University of California, Davis, CA, USA; College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Mei C Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Feng R Wang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | | | - Patricia I Oteiza
- Department of Nutrition, University of California, Davis, CA, USA; Department of Environmental Toxicology, University of California, Davis, CA, USA.
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17
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Gándola YB, Fontana C, Bojorge MA, Luschnat TT, Moretton MA, Chiapetta DA, Verstraeten SV, González L. Concentration-dependent effects of sodium cholate and deoxycholate bile salts on breast cancer cells proliferation and survival. Mol Biol Rep 2020; 47:3521-3539. [PMID: 32297292 DOI: 10.1007/s11033-020-05442-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 04/06/2020] [Indexed: 11/24/2022]
Abstract
Bile acids (BAs) are bioactive molecules that have potential therapeutic interest and their derived salts are used in several pharmaceutical systems. BAs have been associated with tumorigenesis of several tissues including the mammary tissue. Therefore, it is crucial to characterize their effects on cancer cells. The objective of this work was to analyse the molecular and cellular effects of the bile salts sodium cholate and sodium deoxycholate on epithelial breast cancer cell lines. Bile salts (BSs) effects over breast cancer cells viability and proliferation were assessed by MTS and BrdU assays, respectively. Activation of cell signaling mediators was determined by immunobloting. Microscopy was used to analyze cell migration, and cellular and nuclear morphology. Interference of membrane fluidity was studied by generalized polarization and fluorescence anisotropy. BSs preparations were characterized by transmission electron microscopy and dynamic light scattering. Sodium cholate and sodium deoxycholate had dual effects on cell viability, increasing it at the lower concentrations assessed and decreasing it at the highest ones. The increase of cell viability was associated with the promotion of AKT phosphorylation and cyclin D1 expression. High concentrations of bile salts induced apoptosis as well as sustained activation of p38 and AKT. In addition, they affected cell membrane fluidity but not significant effects on cell migration were observed. In conclusion, bile salts have concentration-dependent effects on breast cancer cells, promoting cell proliferation at physiological levels and being cytotoxic at supraphysiological ones. Their effects were associated with the activation of kinases involved in cell signalling.
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Affiliation(s)
- Yamila B Gándola
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina.,Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956 (1113), Buenos Aires, Argentina
| | - Camila Fontana
- Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956 (1113), Buenos Aires, Argentina
| | - Mariana A Bojorge
- Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956 (1113), Buenos Aires, Argentina
| | - Tania T Luschnat
- Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956 (1113), Buenos Aires, Argentina
| | - Marcela A Moretton
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina.,Facultad de Farmacia y Bioquímica, Departamento de Tecnología Farmacéutica, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Diego A Chiapetta
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina.,Facultad de Farmacia y Bioquímica, Departamento de Tecnología Farmacéutica, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Sandra V Verstraeten
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina.,Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956 (1113), Buenos Aires, Argentina
| | - Lorena González
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina. .,Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956 (1113), Buenos Aires, Argentina.
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18
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González-Quilen C, Rodríguez-Gallego E, Beltrán-Debón R, Pinent M, Ardévol A, Blay MT, Terra X. Health-Promoting Properties of Proanthocyanidins for Intestinal Dysfunction. Nutrients 2020; 12:E130. [PMID: 31906505 PMCID: PMC7019584 DOI: 10.3390/nu12010130] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 12/20/2019] [Accepted: 12/31/2019] [Indexed: 12/22/2022] Open
Abstract
The intestinal barrier is constantly exposed to potentially harmful environmental factors, including food components and bacterial endotoxins. When intestinal barrier function and immune homeostasis are compromised (intestinal dysfunction), inflammatory conditions may develop and impact overall health. Evidence from experimental animal and cell culture studies suggests that exposure of intestinal mucosa to proanthocyanidin (PAC)-rich plant products, such as grape seeds, may contribute to maintaining the barrier function and to ameliorating the pathological inflammation present in diet-induced obesity and inflammatory bowel disease. In this review, we aim to update the current knowledge on the bioactivity of PACs in experimental models of intestinal dysfunction and in humans, and to provide insights into the underlying biochemical and molecular mechanisms.
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Affiliation(s)
| | | | | | | | | | - M Teresa Blay
- MoBioFood Research Group, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, 43007 Tarragona, Spain; (C.G.-Q.); (E.R.-G.); (R.B.-D.); (M.P.); (A.A.); (X.T.)
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19
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Zhu W, Wang RF, Khalifa I, Li CM. Understanding toward the Biophysical Interaction of Polymeric Proanthocyanidins (Persimmon Condensed Tannins) with Biomembranes: Relevance for Biological Effects. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:11044-11052. [PMID: 31545599 DOI: 10.1021/acs.jafc.9b04508] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Persimmon condensed tannins (PT) are highly polymerized (mDP = 26) and highly galloylated (72%) proanthocyanidins. Its pleiotropic effects in oxidation resistance, neuroprotection, hypolipidemia, and cardio-protection both in vitro and in vivo were widely reported. Because large proanthocyanidins are unlikely to be absorbed in the gastrointestinal tract, it is believed that the interaction of PT with biological membranes may play a crucial role in its biological activities. In the present study, the capacities of PT adsorbing to membrane, partitioning into membrane, and its influence on the membrane fluidity were investigated by fluorescence quenching, isothermal titration calorimetry (ITC) and fluorescence anisotropy measurements in a biomembrane-mimetic system composed of 1-palmitoyl-2-oleoylphosphatidylcholine (POPC), 1-palmitoyl-2-oleoylphosphatidylethanolamine (POPE), sphingomyelin (SPM), and cholesterol (CHOL). Besides, the effects of PT on the morphology and integrity of the cell membrane were studied by scanning electron microscopy (SEM) and fluorescence staining in the 3T3-L1 cell model. The results suggested that PT could affect cell membrane rafts domains, destroy the cell membrane morphology, and regulate cell membrane fluidity, which might contribute to its biological effects.
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Affiliation(s)
- Wei Zhu
- College of Food Science and Technology , Huazhong Agricultural University , Wuhan 430070 , China
| | - Rui-Feng Wang
- College of Food Science and Technology , Huazhong Agricultural University , Wuhan 430070 , China
| | - Ibrahim Khalifa
- College of Food Science and Technology , Huazhong Agricultural University , Wuhan 430070 , China
- Food Technology Department, Faculty of Agriculture , Benha University , Moshtohor 13736 , Egypt
| | - Chun-Mei Li
- College of Food Science and Technology , Huazhong Agricultural University , Wuhan 430070 , China
- Key Laboratory of Environment Correlative Food Science , Huazhong Agricultural University, Ministry of Education , Wuhan 430070 , China
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20
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Mendoza-Wilson AM, Balandrán-Quintana RR. Computational and Experimental Progress on the Structure and Chemical Reactivity of Procyanidins: Their Potential as Metalloproteinases Inhibitors. CURR ORG CHEM 2019. [DOI: 10.2174/1385272822666180828114021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Matrix metalloproteinases (MMPs) are enzymes involved in various physiological
processes essential for living beings, but the loss of the regulatory control by endogenous
inhibitors of MMPs, leads to the development of serious diseases such as cardiovascular
system affections, cancer, and metastasis. For these reasons, exogenous inhibitors
are required for these enzymes, which are able to control the proteolytic activity
and are selective towards the different MMPs, besides properties which, from the
pharmacological point of view, are necessary to be effective under physiological
conditions. Based on these expectations, some bioactive compounds that are abundant in
the human diet, like procyanidins (PCs) have emerged as potential exogenous inhibitors
of MMPs. This review presents the advances of experimental and computational investigations
carried out to date on the structure and chemical reactivity of PCs, to support the basis of their potential
use as MMP inhibitors. For such purpose, specific sites among MMPs identified for a selective inhibition, the
role of PCs in the regulation of MMPs by posttranscriptional mechanisms at the level of microRNAs, modulation
of reactive oxygen species (ROS), effects on tissue inhibitors of MMPs (TIMPs), the crosslinking of PCs
with the extracellular matrix proteins, as well as direct interaction between PCs and MMPs, are discussed.
Methods for isolation and synthesis of PCs, as well as hydrophilicity properties, bioavailability, and susceptibility
to be metabolized in oral intake, are also addressed. The information gathered in this review could additionally
help to visualize future research related to this topic.
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Affiliation(s)
- Ana María Mendoza-Wilson
- Centro de Investigacion en Alimentacion y Desarrollo, A.C., Coordinacion de Tecnologia de Alimentos de Origen Vegetal, Carretera a La Victoria km 0.6, 83304, Hermosillo, Son, Mexico
| | - René Renato Balandrán-Quintana
- Centro de Investigacion en Alimentacion y Desarrollo, A.C., Coordinacion de Tecnologia de Alimentos de Origen Vegetal, Carretera a La Victoria km 0.6, 83304, Hermosillo, Son, Mexico
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21
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Intestinal cytotoxicity induced by Escherichia coli is fully prevented by red wine polyphenol extract: Mechanistic insights in epithelial cells. Chem Biol Interact 2019; 310:108711. [DOI: 10.1016/j.cbi.2019.06.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 05/08/2019] [Accepted: 06/11/2019] [Indexed: 12/14/2022]
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22
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Dias R, Brás NF, Pérez-Gregorio M, Fernandes I, Mateus N, Freitas V. A multi-spectroscopic study on the interaction of food polyphenols with a bioactive gluten peptide: From chemistry to biological implications. Food Chem 2019; 299:125051. [PMID: 31284245 DOI: 10.1016/j.foodchem.2019.125051] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 06/10/2019] [Accepted: 06/19/2019] [Indexed: 12/13/2022]
Abstract
This study aims to exploit the molecular and cellular mechanisms concerning the functionality of dietary polyphenols (catechin, procyanidin B3, procyanidin C2, epigallocatechin and epigallocatechin gallate) in a nutritional context to prevent Celiac Disease (CD). In that sense, the interaction between the main CD bioactive peptide (32-mer peptide) and some polyphenols was fully characterized at the intestinal level under near physiological conditions by means of different spectroscopic techniques and dynamic simulations. Accordingly, it is proposed that the primarily polyphenol-binding sites on the 32-mer peptide correspond to leucine, tyrosine and phenylalanine containing domains being this interaction entropy-driven. Although procyanidin B3 and trimer C2 had a similar low-affinity constant at 310 K, both procyanidins were able to reduce the 32-mer peptide apical-to-basolateral translocation in in vitro simulated intestinal epithelial barrier thus prospecting the occurrence of additional and still unexplored regulatory mechanisms by which dietary polyphenols might modulate the transepithelial transport of CD bioactive peptides.
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Affiliation(s)
- Ricardo Dias
- QUINOA-LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
| | - Natércia F Brás
- UCIBIO/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
| | - Maria Pérez-Gregorio
- QUINOA-LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
| | - Iva Fernandes
- QUINOA-LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
| | - Nuno Mateus
- QUINOA-LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
| | - Victor Freitas
- QUINOA-LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Porto, Portugal.
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Fernández MA, Silva OF, Vico RV, de Rossi RH. Complex systems that incorporate cyclodextrins to get materials for some specific applications. Carbohydr Res 2019; 480:12-34. [PMID: 31158527 DOI: 10.1016/j.carres.2019.05.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 05/06/2019] [Accepted: 05/15/2019] [Indexed: 12/14/2022]
Abstract
Cyclodextrins (CDs) are a family of biodegradable cyclic hydrocarbons composed of α-(1,4) linked glucopyranose subunits, the more common containing 6, 7 or 8 glucose units are named α, β and γ-cyclodextrins respectively. Since the discovery of CDs, they have attracted interest among scientists and the first studies were about the properties of the native compounds and in particular their use as catalysts of organic reactions. Characteristics features of different types of cyclodextrins stimulated investigation in different areas of research, due to its non-toxic and non-inmunogenic properties and also to the development of an improved industrial production. In this way, many materials with important properties have been developed. This mini-review will focus on chemical systems that use cyclodextrins, whatever linked covalently or mediated by the non covalent interactions, to build complex systems developed mainly during the last five years.
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Affiliation(s)
- Mariana A Fernández
- Instituto de Investigaciones en Fisicoquímica de Córdoba, CONICET y Dpto. de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba. Ciudad Universitaria, X5000HUA, Córdoba, Argentina.
| | - O Fernando Silva
- Instituto de Investigaciones en Fisicoquímica de Córdoba, CONICET y Dpto. de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba. Ciudad Universitaria, X5000HUA, Córdoba, Argentina
| | - Raquel V Vico
- Instituto de Investigaciones en Fisicoquímica de Córdoba, CONICET y Dpto. de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba. Ciudad Universitaria, X5000HUA, Córdoba, Argentina
| | - Rita H de Rossi
- Instituto de Investigaciones en Fisicoquímica de Córdoba, CONICET y Dpto. de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba. Ciudad Universitaria, X5000HUA, Córdoba, Argentina
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24
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Cavanagh RJ, Smith PA, Stolnik S. Exposure to a Nonionic Surfactant Induces a Response Akin to Heat-Shock Apoptosis in Intestinal Epithelial Cells: Implications for Excipients Safety. Mol Pharm 2019; 16:618-631. [PMID: 30608696 DOI: 10.1021/acs.molpharmaceut.8b00934] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Amphipathic, nonionic, surfactants are widely used in pharmaceutical, food, and agricultural industry to enhance product features; as pharmaceutical excipients, they are also aimed at increasing cell membrane permeability and consequently improving oral drugs absorption. Here, we report on the concentration- and time-dependent succession of events occurring throughout and subsequent exposure of Caco-2 epithelium to a "typical" nonionic surfactant (Kolliphor HS15) to provide a molecular explanation for nonionic surfactant cytotoxicity. The study shows that the conditions of surfactant exposure, which increase plasma membrane fluidity and permeability, produced rapid (within 5 min) redox and mitochondrial effects. Apoptosis was triggered early during exposure (within 10 min) and relied upon an initial mitochondrial membrane hyperpolarization (5-10 min) as a crucial step, leading to its subsequent depolarization and caspase-3/7 activation (60 min). The apoptotic pathway appears to be triggered prior to substantial surfactant-induced membrane damage (observed ≥60 min). We hence propose that the cellular response to the model nonionic surfactant is triggered via surfactant-induced increase in plasma membrane fluidity, a phenomenon akin to the stress response to membrane fluidization induced by heat shock, and consequent apoptosis. Therefore, the fluidization effect that confers surfactants the ability to enhance drug permeability may also be intrinsically linked to the propagation of their cytotoxicity. The reported observations have important implications for the safety of a multitude of nonionic surfactants used in drug delivery formulations and to other permeability enhancing compounds with similar plasma membrane fluidizing mechanisms.
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Affiliation(s)
- Robert J Cavanagh
- Division of Molecular Therapeutics and Formulation, School of Pharmacy , University of Nottingham , Nottingham NG7 2RD , United Kingdom
| | - Paul A Smith
- School of Life Science , University of Nottingham , Nottingham NG7 2RD , United Kingdom
| | - Snow Stolnik
- Division of Molecular Therapeutics and Formulation, School of Pharmacy , University of Nottingham , Nottingham NG7 2RD , United Kingdom
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25
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Oteiza P, Fraga C, Mills D, Taft D. Flavonoids and the gastrointestinal tract: Local and systemic effects. Mol Aspects Med 2018; 61:41-49. [DOI: 10.1016/j.mam.2018.01.001] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 01/04/2018] [Accepted: 01/05/2018] [Indexed: 12/25/2022]
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26
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Fuentes NR, Kim E, Fan YY, Chapkin RS. Omega-3 fatty acids, membrane remodeling and cancer prevention. Mol Aspects Med 2018; 64:79-91. [PMID: 29627343 DOI: 10.1016/j.mam.2018.04.001] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 03/27/2018] [Accepted: 04/04/2018] [Indexed: 12/20/2022]
Abstract
Proteins are often credited as the macromolecule responsible for performing critical cellular functions, however lipids have recently garnered more attention as our understanding of their role in cell function and human health becomes more apparent. Although cellular membranes are the lipid environment in which many proteins function, it is now apparent that protein and lipid assemblies can be organized to form distinct micro- or nanodomains that facilitate signaling events. Indeed, it is now appreciated that cellular function is partly regulated by the specific spatiotemporal lipid composition of the membrane, down to the nanosecond and nanometer scale. Furthermore, membrane composition is altered during human disease processes such as cancer and obesity. For example, an increased rate of lipid/cholesterol synthesis in cancerous tissues has long been recognized as an important aspect of the rewired metabolism of transformed cells. However, the contribution of lipids/cholesterol to cellular function in disease models is not yet fully understood. Furthermore, an important consideration in regard to human health is that diet is a major modulator of cell membrane composition. This can occur directly through incorporation of membrane substrates, such as fatty acids, e.g., n-3 polyunsaturated fatty acids (n-3 PUFA) and cholesterol. In this review, we describe scenarios in which changes in membrane composition impact human health. Particular focus is placed on the importance of intrinsic lipid/cholesterol biosynthesis and metabolism and extrinsic dietary modification in cancer and its effect on plasma membrane properties.
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Affiliation(s)
- Natividad R Fuentes
- Program in Integrative Nutrition & Complex Diseases, Texas A&M University, USA; Faculty of Toxicology, Texas A&M University, USA
| | - Eunjoo Kim
- Program in Integrative Nutrition & Complex Diseases, Texas A&M University, USA; Department of Molecular and Cellular Medicine, Texas A&M University, USA
| | - Yang-Yi Fan
- Program in Integrative Nutrition & Complex Diseases, Texas A&M University, USA; Department of Nutrition & Food Science, Texas A&M University, USA
| | - Robert S Chapkin
- Program in Integrative Nutrition & Complex Diseases, Texas A&M University, USA; Faculty of Toxicology, Texas A&M University, USA; Department of Nutrition & Food Science, Texas A&M University, USA; Center for Translational Environmental Health Research, Texas A&M University, USA.
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27
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Fraga CG, Oteiza PI, Galleano M. Plant bioactives and redox signaling: (-)-Epicatechin as a paradigm. Mol Aspects Med 2018; 61:31-40. [PMID: 29421170 DOI: 10.1016/j.mam.2018.01.007] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 01/25/2018] [Accepted: 01/25/2018] [Indexed: 12/31/2022]
Abstract
Polyphenols are bioactives claimed to be responsible for some of the health benefits provided by fruit and vegetables. It is currently accepted that the bioactivities of polyphenols can be mostly ascribed to their interactions with proteins and lipids. Such interactions can affect cell oxidant production and cell signaling, and explain in part the ability of polyphenols to promote health. EC can modulate redox sensitive signaling by: i) defining the extent of oxidant levels that can modify cell signaling, function, and fate, e.g. regulating enzymes that generate superoxide, hydrogen peroxide and nitric oxide; or ii) regulating the activation of transcription factors sensible to oxidants. The latter includes the regulation of the nuclear factor E2-related factor 2 (Nfr2) pathway, which in turn can promote the synthesis of antioxidant defenses, and of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-kB) pathway, which mediates the expression of oxidants generating enzymes, as well as proteins not involved in redox reactions. In summary, a significant amount of data vindicates the participation of EC in redox regulated signaling pathways. Progress in the understanding of the molecular mechanisms involved in EC biological actions will help to define recommendations in terms of which fruit and vegetables are healthier and the amounts necessary to provide health effects.
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Affiliation(s)
- Cesar G Fraga
- Fisicoquímica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina; Instituto de Bioquímica y Medicina Molecular (IBIMOL), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina; Department of Nutrition, University of California, Davis, USA.
| | - Patricia I Oteiza
- Department of Nutrition, University of California, Davis, USA; Department of Environmental Toxicology, University of California, Davis, USA
| | - Monica Galleano
- Fisicoquímica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina; Instituto de Bioquímica y Medicina Molecular (IBIMOL), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
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28
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Fuentes NR, Salinas ML, Kim E, Chapkin RS. Emerging role of chemoprotective agents in the dynamic shaping of plasma membrane organization. BIOCHIMICA ET BIOPHYSICA ACTA. BIOMEMBRANES 2017; 1859:1668-1678. [PMID: 28342710 PMCID: PMC5501766 DOI: 10.1016/j.bbamem.2017.03.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2016] [Revised: 03/15/2017] [Accepted: 03/19/2017] [Indexed: 12/22/2022]
Abstract
In the context of an organism, epithelial cells by nature are designed to be the defining barrier between self and the outside world. This is especially true for the epithelial cells that form the lining of the digestive tract, which absorb nutrients and serve as a barrier against harmful substances. These cells are constantly bathed by a complex mixture of endogenous (bile acids, mucus, microbial metabolites) and exogenous (food, nutrients, drugs) bioactive compounds. From a cell biology perspective, this type of exposure would directly impact the plasma membrane, which consists of a myriad of complex lipids and proteins. The plasma membrane not only functions as a barrier but also as the medium in which cellular signaling complexes form and function. This property is mediated by the organization of the plasma membrane, which is exquisitely temporally (nanoseconds to minutes) and spatially (nanometers to micrometers) regulated. Since numerous bioactive compounds found in the intestinal lumen can directly interact with lipid membranes, we hypothesize that the dynamic reshaping of plasma membrane organization underlies the chemoprotective effect of select membrane targeted dietary bioactives (MTDBs). This article is part of a Special Issue entitled: Membrane Lipid Therapy: Drugs Targeting Biomembranes edited by Pablo V. Escribá.
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Affiliation(s)
- Natividad R Fuentes
- Program in Integrative Nutrition & Complex Diseases, Texas A&M University, USA; Faculty of Toxicology, Texas A&M University, USA
| | - Michael L Salinas
- Program in Integrative Nutrition & Complex Diseases, Texas A&M University, USA; Department of Nutrition & Food Science, Texas A&M University, USA
| | - Eunjoo Kim
- Program in Integrative Nutrition & Complex Diseases, Texas A&M University, USA; Department of Molecular and Cellular Medicine, Texas A&M University, USA
| | - Robert S Chapkin
- Program in Integrative Nutrition & Complex Diseases, Texas A&M University, USA; Faculty of Toxicology, Texas A&M University, USA; Department of Nutrition & Food Science, Texas A&M University, USA; Center for Translational Environmental Health Research, Texas A&M University, USA.
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29
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Zhu W, Khalifa I, Peng J, Li C. Position and orientation of gallated proanthocyanidins in lipid bilayer membranes: influence of polymerization degree and linkage type. J Biomol Struct Dyn 2017; 36:2862-2875. [DOI: 10.1080/07391102.2017.1369163] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Wei Zhu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Ibrahim Khalifa
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Jinming Peng
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Chunmei Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Key Laboratory of Environment Correlative Food Science, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
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30
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Wei J, Huang Q, Bai F, Lin J, Nie J, Lu S, Lu C, Huang R, Lu Z, Lin X. Didymin induces apoptosis through mitochondrial dysfunction and up-regulation of RKIP in human hepatoma cells. Chem Biol Interact 2017; 261:118-126. [DOI: 10.1016/j.cbi.2016.11.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 11/06/2016] [Accepted: 11/24/2016] [Indexed: 12/27/2022]
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31
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Williams AR, Klaver EJ, Laan LC, Ramsay A, Fryganas C, Difborg R, Kringel H, Reed JD, Mueller-Harvey I, Skov S, van Die I, Thamsborg SM. Co-operative suppression of inflammatory responses in human dendritic cells by plant proanthocyanidins and products from the parasitic nematode Trichuris suis. Immunology 2016; 150:312-328. [PMID: 27905107 DOI: 10.1111/imm.12687] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 10/29/2016] [Accepted: 11/01/2016] [Indexed: 12/20/2022] Open
Abstract
Interactions between dendritic cells (DCs) and environmental, dietary and pathogen antigens play a key role in immune homeostasis and regulation of inflammation. Dietary polyphenols such as proanthocyanidins (PAC) may reduce inflammation, and we therefore hypothesized that PAC may suppress lipopolysaccharide (LPS) -induced responses in human DCs and subsequent T helper type 1 (Th1) -type responses in naive T cells. Moreover, we proposed that, because DCs are likely to be exposed to multiple stimuli, the activity of PAC may synergise with other bioactive molecules that have anti-inflammatory activity, e.g. soluble products from the helminth parasite Trichuris suis (TsSP). We show that PAC are endocytosed by monocyte-derived DCs and selectively induce CD86 expression. Subsequently, PAC suppress the LPS-induced secretion of interleukin-6 (IL-6) and IL-12p70, while enhancing secretion of IL-10. Incubation of DCs with PAC did not affect lymphocyte proliferation; however, subsequent interferon-γ production was markedly suppressed, while IL-4 production was unaffected. The activity of PAC was confined to oligomers (degree of polymerization ≥ 4). Co-pulsing DCs with TsSP and PAC synergistically reduced secretion of tumour necrosis factor-α, IL-6 and IL-12p70 while increasing IL-10 secretion. Moreover, both TsSP and PAC alone induced Th2-associated OX40L expression in DCs, and together synergized to up-regulate OX40L. These data suggest that PAC induce an anti-inflammatory phenotype in human DCs that selectively down-regulates Th1 response in naive T cells, and that they also act cooperatively with TsSP. Our results indicate a novel interaction between dietary compounds and parasite products to influence immune function, and may suggest that combinations of PAC and TsSP can have therapeutic potential for inflammatory disorders.
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Affiliation(s)
- Andrew R Williams
- Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Elsenoor J Klaver
- Department of Molecular Cell Biology and Immunology, VU University Medical Centre, Amsterdam, the Netherlands
| | - Lisa C Laan
- Department of Molecular Cell Biology and Immunology, VU University Medical Centre, Amsterdam, the Netherlands
| | - Aina Ramsay
- Chemistry and Biochemistry Laboratory, University of Reading, Reading, UK
| | - Christos Fryganas
- Chemistry and Biochemistry Laboratory, University of Reading, Reading, UK
| | - Rolf Difborg
- Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Helene Kringel
- Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Jess D Reed
- Department of Animal Science, University of Wisconsin-Madison, Madison, WI, USA
| | | | - Søren Skov
- Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Irma van Die
- Department of Molecular Cell Biology and Immunology, VU University Medical Centre, Amsterdam, the Netherlands
| | - Stig M Thamsborg
- Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
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32
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Ropiak HM, Desrues O, Williams AR, Ramsay A, Mueller-Harvey I, Thamsborg SM. Structure-Activity Relationship of Condensed Tannins and Synergism with trans-Cinnamaldehyde against Caenorhabditis elegans. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:8795-8805. [PMID: 27796095 DOI: 10.1021/acs.jafc.6b03842] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Parasitic gastrointestinal nematodes (GIN) of livestock are increasingly developing resistance to synthetic nematocidal drugs. Moreover, the use of nematocides can induce ecotoxicity by affecting free-living nematodes. Condensed tannins (CT) are a structurally diverse group of bioactive plant compounds possessing anthelmintic activity against GIN. We investigated the relationship between the chemical structure of contrasting, purified CT and nematocidal effects using Caenorhabditis elegans. We also explored whether the nematocidal activity of CT could synergize with trans-cinnamaldehyde (CIN). A nonsignificant correlation was evident between the ability of CT fractions to inhibit C. elegans motility and the molar proportion of prodelphinidin subunits in purified CT samples. Synergistic inhibition of motility was achieved by combinations of CT and CIN. Galloylation of procyanidins was also a key factor for synergy. To increase the nematocidal effect of CT, plant sources containing CT with specific structural features could be selected and combined with compounds acting in synergy.
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Affiliation(s)
- Honorata M Ropiak
- Chemistry and Biochemistry Laboratory, School of Agriculture, Policy and Development, University of Reading , 1 Earley Gate, Reading RG6 6AT, United Kingdom
| | - Olivier Desrues
- Veterinary Parasitology Group, Department of Veterinary Disease Biology, University of Copenhagen , Dyrlægevej 100, 1870 Frederiksberg C, Denmark
| | - Andrew R Williams
- Veterinary Parasitology Group, Department of Veterinary Disease Biology, University of Copenhagen , Dyrlægevej 100, 1870 Frederiksberg C, Denmark
| | - Aina Ramsay
- Chemistry and Biochemistry Laboratory, School of Agriculture, Policy and Development, University of Reading , 1 Earley Gate, Reading RG6 6AT, United Kingdom
| | - Irene Mueller-Harvey
- Chemistry and Biochemistry Laboratory, School of Agriculture, Policy and Development, University of Reading , 1 Earley Gate, Reading RG6 6AT, United Kingdom
| | - Stig M Thamsborg
- Veterinary Parasitology Group, Department of Veterinary Disease Biology, University of Copenhagen , Dyrlægevej 100, 1870 Frederiksberg C, Denmark
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Rocha BS, Nunes C, Laranjinha J. Tuning constitutive and pathological inflammation in the gut via the interaction of dietary nitrate and polyphenols with host microbiome. Int J Biochem Cell Biol 2016; 81:393-402. [PMID: 27989963 DOI: 10.1016/j.biocel.2016.10.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 10/22/2016] [Accepted: 10/26/2016] [Indexed: 02/08/2023]
Abstract
Chronic inflammation is currently recognized as a critical process in modern-era epidemics such as diabetes, obesity and neurodegeneration. However, little attention is paid to the constitutive inflammatory pathways that operate in the gut and that are mandatory for local welfare and the prevention of such multi-organic diseases. Hence, the digestive system, while posing as a barrier between the external environment and the host, is crucial for the balance between constitutive and pathological inflammatory events. Gut microbiome, a recently discovered organ, is now known to govern the interaction between exogenous agents and the host with ensued impact on local and systemic homeostasis. Whereas gut microbiota may be modulated by a myriad of factors, diet constitutes one of its major determinants. Thus, dietary compounds that influence microbial flora may thereby impact on inflammatory pathways. One such example is the redox environment in the gut lumen which is highly dependent on the local generation of nitric oxide along the nitrate-nitrite-nitric oxide pathway and that is further enhanced by simultaneous consumption of polyphenols. In this paper, different pathways encompassing the interaction of dietary nitrate and polyphenols with gut microbiota will be presented and discussed in connection with local and systemic inflammatory events. Furthermore, it will be discussed how these interactive cycles (nitrate-polyphenols-microbiome) may pose as novel strategies to tackle inflammatory diseases.
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Affiliation(s)
- Bárbara S Rocha
- Faculty of Pharmacy and Center for Neurosciences and Cell Biology, University of Coimbra, Health Sciences Campus, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Carla Nunes
- Faculty of Pharmacy and Center for Neurosciences and Cell Biology, University of Coimbra, Health Sciences Campus, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - João Laranjinha
- Faculty of Pharmacy and Center for Neurosciences and Cell Biology, University of Coimbra, Health Sciences Campus, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal.
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34
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Xu L, Hou Y, Zhang M, Yang X, Jenkins G, Huang W, Yao C, Wu Q. A novel electrochemical biosensor for detection of cholesterol. RUSS J ELECTROCHEM+ 2016. [DOI: 10.1134/s1023193516030101] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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35
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Wong X, Carrasco-Pozo C, Escobar E, Navarrete P, Blachier F, Andriamihaja M, Lan A, Tomé D, Cires MJ, Pastene E, Gotteland M. Deleterious Effect of p-Cresol on Human Colonic Epithelial Cells Prevented by Proanthocyanidin-Containing Polyphenol Extracts from Fruits and Proanthocyanidin Bacterial Metabolites. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:3574-3583. [PMID: 27039931 DOI: 10.1021/acs.jafc.6b00656] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The protective effect of proanthocyanidin-containing polyphenol extracts from apples, avocados, cranberries, grapes, or proanthocyanidin microbial metabolites was evaluated in colonic epithelial cells exposed to p-cresol, a deleterious compound produced by the colonic microbiota from l-tyrosine. In HT29 Glc(-/+) cells, p-cresol significantly increased LDH leakage and decreased ATP contents, whereas in Caco-2 cell monolayers, it significantly decreased the transepithelial electrical resistance and increased the paracellular transport of FITC-dextran. The alterations induced by p-cresol in HT29 Glc(-/+) cells were prevented by the extracts from cranberries and avocados, whereas they became worse by extracts from apples and grapes. The proanthocyanidin bacterial metabolites decreased LDH leakage, ameliorating cell viability without improving intracellular ATP. All of the polyphenol extracts and proanthocyanidin bacterial metabolites prevented the p-cresol-induced alterations of barrier function. These results suggest that proanthocyanidin-containing polyphenol extracts and proanthocyanidin metabolites likely contribute to the protection of the colonic mucosa against the deleterious effects of p-cresol.
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Affiliation(s)
- Ximena Wong
- Department of Nutrition, Faculty of Medicine, University of Chile , Independencia 1027, Independencia, Santiago, Chile
| | - Catalina Carrasco-Pozo
- Department of Nutrition, Faculty of Medicine, University of Chile , Independencia 1027, Independencia, Santiago, Chile
| | - Elizabeth Escobar
- Department of Nutrition, Faculty of Medicine, University of Chile , Independencia 1027, Independencia, Santiago, Chile
| | - Paola Navarrete
- Institute of Nutrition and Food Technology (INTA), University of Chile , Santiago, Chile
| | - Franςois Blachier
- INRA/AGROPARISTECH , UMR 914 Nutrition Physiology and Ingestive Behavior, Paris, France
| | - Mireille Andriamihaja
- INRA/AGROPARISTECH , UMR 914 Nutrition Physiology and Ingestive Behavior, Paris, France
| | - Annaig Lan
- INRA/AGROPARISTECH , UMR 914 Nutrition Physiology and Ingestive Behavior, Paris, France
| | - Daniel Tomé
- INRA/AGROPARISTECH , UMR 914 Nutrition Physiology and Ingestive Behavior, Paris, France
| | - Marı́a José Cires
- Department of Nutrition, Faculty of Medicine, University of Chile , Independencia 1027, Independencia, Santiago, Chile
| | - Edgar Pastene
- Laboratory of Pharmacognosy, Faculty of Pharmacy, University of Concepción , Concepción, Chile
| | - Martin Gotteland
- Department of Nutrition, Faculty of Medicine, University of Chile , Independencia 1027, Independencia, Santiago, Chile
- Institute of Nutrition and Food Technology (INTA), University of Chile , Santiago, Chile
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36
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37
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Choy YY, Fraga M, Mackenzie GG, Waterhouse AL, Cremonini E, Oteiza PI. The PI3K/Akt pathway is involved in procyanidin‐mediated suppression of human colorectal cancer cell growth. Mol Carcinog 2016; 55:2196-2209. [DOI: 10.1002/mc.22461] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 01/04/2016] [Accepted: 01/06/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Ying Yng Choy
- Department of Viticulture and EnologyUniversity of CaliforniaDavisCalifornia
| | - Magdalena Fraga
- Departments of Nutrition and Environmental ToxicologyUniversity of CaliforniaDavisCalifornia
| | - Gerardo G. Mackenzie
- Department of Preventive MedicineStony Brook Cancer CenterStony Brook UniversityStony BrookNew York
| | | | - Eleonora Cremonini
- Departments of Nutrition and Environmental ToxicologyUniversity of CaliforniaDavisCalifornia
| | - Patricia I. Oteiza
- Departments of Nutrition and Environmental ToxicologyUniversity of CaliforniaDavisCalifornia
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Araki Y, Koshiishi I. Simultaneous evaluation of one-electron reducing systems and radical reactions in cells by nitroxyl biradical as probe. Biomed Chromatogr 2015; 30:1131-1137. [DOI: 10.1002/bmc.3661] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 11/01/2015] [Accepted: 11/20/2015] [Indexed: 11/12/2022]
Affiliation(s)
- Yoko Araki
- Gunma University; 3-39-22 Showa-machi Maebashi Gunma 371-8511 Japan
| | - Ichiro Koshiishi
- Gunma University; 3-39-22 Showa-machi Maebashi Gunma 371-8511 Japan
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39
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Enhanced antioxidation via encapsulation of isooctyl p-methoxycinnamate with sodium deoxycholate-mediated liposome endocytosis. Int J Pharm 2015; 496:392-400. [PMID: 26453790 DOI: 10.1016/j.ijpharm.2015.10.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 09/14/2015] [Accepted: 10/03/2015] [Indexed: 11/22/2022]
Abstract
Isooctyl p-methoxycinnamate(OMC) is a commonly used chemical ultraviolet B sunscreen that suffers rapid degradation with current delivery systems following sun exposure. In this study, deoxycholate-mediated liposome (DOC-LS) endocytosis was employed to improve the antioxidation effects of OMC following topical administration, and the in vitro cell uptake was investigated to understand the enhanced cutaneous absorption of the drug via this nanocarrier. Following topical application, structural changes in the stratum corneum were identified. With the increase of DOC content, the drug deposition in skin decreased; from this, a DOC-LS formulation was selected that showed significantly more drug delivery in skin than did the other preparations (P<0.05). DOC-LS decreased skin resistance, suggesting its ability to induce skin barrier disruption. In vitro HaCaT keratinocyte cell uptake of coumarin-6 incorporated in the two types of phosphatidylcholine (PC) vesicles (i.e., LS or DOC-LS) yielded similar fluorescence intensities following incubation for different periods (P<0.05). However, CCC-ESF-1 embryonic fibroblast cell uptake of the fluorescence revealed time-dependence, and the emitted light from DOC-LS incubated cells was stronger than that from cells incubated with LS (P<0.05). These findings might be associated with the endocytic pathway of HaCaT, which mainly exhibited adsorption or physical adhesion of the fluorescent vesicles, whereas CCC-ESF-1 markedly internalized the PC vesicles via the lysosomes, as shown by intracellular fluorescence co-location studies. Following loading with the same amount of OMC, the DOC-LS vesicles exhibited superior skin tissue antioxidative capacity among the preparations tested, corroborating the in vivo skin drug deposition results. Thus, our results suggest that DOC-LS is a promising system for OMC dermal delivery without promoting skin irritation, which is quite advantageous for therapeutic purposes.
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40
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Rocha BS, Nunes C, Pereira C, Barbosa RM, Laranjinha J. A shortcut to wide-ranging biological actions of dietary polyphenols: modulation of the nitrate-nitrite-nitric oxide pathway in the gut. Food Funct 2015; 5:1646-52. [PMID: 24912104 DOI: 10.1039/c4fo00124a] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Dietary polyphenols are complex, natural compounds with recognized health benefits. Initially attractive to the biomedical area due to their in vitro antioxidant properties, the biological implications of polyphenols are now known to be far from their acute ability to scavenge free radicals but rather to modulate redox signaling pathways. Actually, it is now recognized that dietary polyphenols are extensively metabolized in vivo and that the chemical, biophysical and biological properties of their metabolites are, in most cases, quite different from the ones of the parent molecules. Hence, the study of the metabolic, absorptive and signaling pathways of both phenolics and derivatives has become a major issue. In this paper we propose a short-cut for the systemic effects of polyphenols in connection with nitric oxide (˙NO) biology. This free radical is a ubiquitous signaling molecule with pivotal functions in vivo. It is produced through an enzymatic pathway and also through the reduction of dietary nitrate and nitrite in the human stomach. At acidic gastric pH, dietary polyphenols, in the form they are conveyed in foods and at high concentration, not only promote nitrite reduction to ˙NO but also embark in a complex network of chemical reactions to produce higher nitrogen oxides with signaling functions, namely by inducing post-translational modifications. Modified endogenous molecules, such as nitrated proteins and lipids, acquire important physiological functions. Thus, local and systemic effects of ˙NO such as modulation of vascular tone, mucus production in the gut and protection against ischemia-reperfusion injury are, in this sense, triggered by dietary polyphenols. Evidence to support the signaling and biological effects of polyphenols by modulation of the nitrate-nitrite-NO pathway will be herein provided and discussed. General actions of polyphenols encompassing absorption and metabolism in the intestine/liver are short-cut via the production of diffusible species in the stomach that have not only a local but also a general impact.
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Affiliation(s)
- Bárbara S Rocha
- Faculty of Pharmacy and Center for Neurosciences and Cell Biology, University of Coimbra, Health Sciences Campus, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal.
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41
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Salvadó MJ, Casanova E, Fernández-Iglesias A, Arola L, Bladé C. Roles of proanthocyanidin rich extracts in obesity. Food Funct 2015; 6:1053-71. [DOI: 10.1039/c4fo01035c] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Obesity is a multifactorial disorder involving an abnormal or excessive amount of body fat.
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Affiliation(s)
- M. Josepa Salvadó
- Departament de Bioquímica i Biotecnologia
- Universitat Rovira i Virgili
- Tarragona
- Spain
| | - Ester Casanova
- Departament de Bioquímica i Biotecnologia
- Universitat Rovira i Virgili
- Tarragona
- Spain
| | | | - Lluis Arola
- Departament de Bioquímica i Biotecnologia
- Universitat Rovira i Virgili
- Tarragona
- Spain
| | - Cinta Bladé
- Departament de Bioquímica i Biotecnologia
- Universitat Rovira i Virgili
- Tarragona
- Spain
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42
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Sharma G, Beg S, Thanki K, Katare OP, Jain S, Kohli K, Singh B. Systematic development of novel cationic self-nanoemulsifying drug delivery systems of candesartan cilexetil with enhanced biopharmaceutical performance. RSC Adv 2015. [DOI: 10.1039/c5ra11687b] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The current studies entail systematic development, optimization and evaluation of cationic self-nanoemulsifying drug delivery systems (C-SNEDDS) for enhancing the oral bioavailability of candesartan cilexetil.
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Affiliation(s)
- Gajanand Sharma
- University Institute of Pharmaceutical Sciences
- UGC Centre of Advanced Studies
- Panjab University
- Chandigarh
- India 160 014
| | - Sarwar Beg
- University Institute of Pharmaceutical Sciences
- UGC Centre of Advanced Studies
- Panjab University
- Chandigarh
- India 160 014
| | - Kaushik Thanki
- Centre for Pharmaceutical Nanotechnology
- National Institute of Pharmaceutical Education and Research (NIPER)
- Mohali
- India 160 062
| | - O. P. Katare
- University Institute of Pharmaceutical Sciences
- UGC Centre of Advanced Studies
- Panjab University
- Chandigarh
- India 160 014
| | - Sanyog Jain
- Centre for Pharmaceutical Nanotechnology
- National Institute of Pharmaceutical Education and Research (NIPER)
- Mohali
- India 160 062
| | - Kanchan Kohli
- Department of Pharmaceutics
- Faculty of Pharmacy
- Hamdard University
- New Delhi
- India 110 062
| | - Bhupinder Singh
- University Institute of Pharmaceutical Sciences
- UGC Centre of Advanced Studies
- Panjab University
- Chandigarh
- India 160 014
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43
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Zou B, Ge Z, Zhu W, Xu Z, Li C. Persimmon tannin represses 3T3-L1 preadipocyte differentiation via up-regulating expression of miR-27 and down-regulating expression of peroxisome proliferator-activated receptor-γ in the early phase of adipogenesis. Eur J Nutr 2014; 54:1333-43. [DOI: 10.1007/s00394-014-0814-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Accepted: 12/04/2014] [Indexed: 11/24/2022]
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44
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Verstraeten SV, Fraga CG, Oteiza PI. Interactions of flavan-3-ols and procyanidins with membranes: mechanisms and the physiological relevance. Food Funct 2014; 6:32-41. [PMID: 25418533 DOI: 10.1039/c4fo00647j] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Flavonoids are a type of phenolic compound widely present in edible plants. A great number of health benefits have been ascribed to flavonoid consumption in the human population. However, the molecular mechanisms involved in such effects remain to be identified. The flavan-3-ols (-)-epicatechin and (+)-catechin, and their related oligomers (procyanidins) have been thoroughly studied because of their capacity to interact with cell membranes. Starting with these interactions, procyanidins could modulate multiple biochemical processes, such as enzyme activities, receptor-ligand binding, membrane-initiated cell signaling, and molecule transport across membranes. This review focuses on molecular aspects of procyanidin interactions with membrane lipid components, and the resulting protection of the membranes against mechanical and/or oxidative damage, resulting in the maintenance of cell functions.
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Affiliation(s)
- Sandra V Verstraeten
- Department of Biological Chemistry and IQUIFIB (UBA-CONICET), Buenos Aires, Argentina
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45
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Zou B, Nie R, Zeng J, Ge Z, Xu Z, Li C. Persimmon tannin alleviates hepatic steatosis in L02 cells by targeting miR-122 and miR-33b and its effects closely associated with the A type ECG dimer and EGCG dimer structural units. J Funct Foods 2014. [DOI: 10.1016/j.jff.2014.10.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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46
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Choy YY, Quifer-Rada P, Holstege DM, Frese SA, Calvert CC, Mills DA, Lamuela-Raventos RM, Waterhouse AL. Phenolic metabolites and substantial microbiome changes in pig feces by ingesting grape seed proanthocyanidins. Food Funct 2014; 5:2298-308. [PMID: 25066634 PMCID: PMC4744461 DOI: 10.1039/c4fo00325j] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Proanthocyanidin (PAC) consumption has been linked to better colonic health, but PACs are poorly absorbed, making them a target for colonic metabolism. The resulting metabolites are low molecular weight and could potentially be absorbed. To understand the effects of dietary PACs it would be important to resolve the metabolic issue and link these changes to microbial population changes in a suitable model for human digestion. Here, six crossbred female pigs were fed a diet containing 1% (w/w) of MegaNatural® Gold grape seed extract (GSE) daily for 6 days. Fecal samples were analyzed by normal phase LC coupled to fluorescence detection and LC-MS/ToF. DNA was extracted from pig fecal samples and the V3/V4 region of the 16S rRNA gene was sequenced using an Illumina MiSeq. Intact parent PACs (dimer-pentamer) were observed in the feces on days 3 and 6 at similar high levels (∼400 mg kg(-1) total) during ingestion of GSE but were absent 48 h post-feeding. The major phenolic metabolites were 4-hydroxyphenylvaleric acid and 3-hydroxybenzoic acid which increased by ∼30 and 3 mg kg(-1) respectively. The GSE diet also caused an ecological shift in the microbiome, dramatically increasing Lachnospiraceae, Clostridales, Lactobacillus and Ruminococcacceae. The relationship between dietary PACs and colon health may be attributable to the altered bacterial populations or phenolic compounds in the colon.
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Affiliation(s)
- Ying Yng Choy
- Department of Viticulture & Enology, University of California, Davis, One Shields Avenue, Davis, CA 95616-8749, USA.
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