1
|
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] [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.
Collapse
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.
| |
Collapse
|
2
|
Zhang T, Fu M, Yu T, Jiang F, Lyu S, Yang Q, Du Z, Liu X, Liu J, Yu Y. Molecular Interactions Between Egg White Peptides and Giant Unilamellar Vesicle Membranes: Effect of Peptide Localization on Membrane Fluidity. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024. [PMID: 38592417 DOI: 10.1021/acs.jafc.3c08291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Bioactive peptides have been shown to affect cell membrane fluidity, which is an important indicator of the cell membrane structure and function. However, the underlying mechanism of egg white-derived bioactive peptide regulation of cell membrane fluidity has not been elucidated yet. The cell membrane fluidity was investigated by giant unilamellar vesicles in the present study. The results showed that peptides TCNW, ADWAK, ESIINF, VPIEGII, LVEEY, and WKLC connect to membranes through intermolecular interactions, such as hydrogen bonding and regulated membrane fluidity, in a concentration-dependent way. In addition, peptides prefer to localize in the hydrophobic core of the bilayers. This study provides a theoretical basis for analyzing the localization of egg white bioactive peptides in specific cell membrane regions and their influence on the cell membrane fluidity.
Collapse
Affiliation(s)
- Ting Zhang
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, People's Republic of China
- College of Food Science and Engineering, Jilin University, Changchun 130062, People's Republic of China
| | - Menghan Fu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, People's Republic of China
- College of Food Science and Engineering, Jilin University, Changchun 130062, People's Republic of China
| | - Ting Yu
- Department of Nutrition, The Second Hospital of Jilin University, Changchun 130041, People's Republic of China
| | - Feng Jiang
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, People's Republic of China
- College of Food Science and Engineering, Jilin University, Changchun 130062, People's Republic of China
- Department of Molecular & Integrative Physiology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan 48109, United States
| | - Siwen Lyu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, People's Republic of China
- College of Food Science and Engineering, Jilin University, Changchun 130062, People's Republic of China
| | - Qi Yang
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, People's Republic of China
- College of Food Science and Engineering, Jilin University, Changchun 130062, People's Republic of China
| | - Zhiyang Du
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, People's Republic of China
- College of Food Science and Engineering, Jilin University, Changchun 130062, People's Republic of China
| | - Xuanting Liu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, People's Republic of China
- College of Food Science and Engineering, Jilin University, Changchun 130062, People's Republic of China
| | - Jingbo Liu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, People's Republic of China
- College of Food Science and Engineering, Jilin University, Changchun 130062, People's Republic of China
| | - Yiding Yu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, People's Republic of China
- College of Food Science and Engineering, Jilin University, Changchun 130062, People's Republic of China
| |
Collapse
|
3
|
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.
Collapse
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
| |
Collapse
|
4
|
Fraga CG, Oteiza PI, Hid EJ, Galleano M. (Poly)phenols and the regulation of NADPH oxidases. Redox Biol 2023; 67:102927. [PMID: 37857000 PMCID: PMC10587761 DOI: 10.1016/j.redox.2023.102927] [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: 08/07/2023] [Revised: 10/06/2023] [Accepted: 10/07/2023] [Indexed: 10/21/2023] Open
Abstract
Nicotinamide adenine dinucleotide phosphate (NADPH) oxidases (NOXs) are enzymes that generate superoxide anion (O2•-) and hydrogen peroxide (H2O2), and that are widely distributed in mammalian tissues. Many bioactives, especially plant (poly)phenols are being studied for their capacity to regulate NOXs. The modulation of these enzymes are of central relevance to maintain redox homeostasis and regulate cell signaling. In in vitro and ex vivo assays, and in experimental animal models, different (poly)phenols are able to modulate NOX-dependent generation of O2•- and H2O2. Mechanistically, most of the known effects of (poly)phenols and of their metabolites on NOX1, NOX2, and NOX4, include the modulation of: i) the expression of the different constituent subunits, and/or ii) posttranslational modifications involved in the assembly and translocation of the protein complexes. Very limited evidence is available on a direct action of (poly)phenols on NOX active site (electron-transferring protein). Moreover, it is suggested that the regulation by (poly)phenols of systemic events, e.g. inflammation, is frequently associated with their capacity to regulate NOX activation. Although of physiological significance, more studies are needed to understand the specific targets/mechanisms of NOX regulation by (poly)phenols, and the (poly)phenol chemical structures and moieties directly involved in the observed effects. It should be kept in mind the difficulties of NOX's studies associated with the complexity of NOXs biochemistry and the methodological limitations of O2•- and H2O2 the determinations. Studies relating human ingestion of specific (poly)phenols, with NOX activity and disease conditions, are guaranteed to better understand the health importance of (poly)phenol consumption and the involvement of NOXs as biological targets.
Collapse
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), UBA-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
| | - Ezequiel J Hid
- Fisicoquímica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina; Instituto de Bioquímica y Medicina Molecular (IBIMOL), UBA-CONICET, Buenos Aires, Argentina
| | - Monica Galleano
- Fisicoquímica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina; Instituto de Bioquímica y Medicina Molecular (IBIMOL), UBA-CONICET, Buenos Aires, Argentina.
| |
Collapse
|
5
|
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: 0] [Impact Index Per Article: 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.
Collapse
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.
| |
Collapse
|
6
|
Ragusa MA, Naselli F, Cruciata I, Volpes S, Schimmenti C, Serio G, Mauro M, Librizzi M, Luparello C, Chiarelli R, La Rosa C, Lauria A, Gentile C, Caradonna F. Indicaxanthin Induces Autophagy in Intestinal Epithelial Cancer Cells by Epigenetic Mechanisms Involving DNA Methylation. Nutrients 2023; 15:3495. [PMID: 37571432 PMCID: PMC10420994 DOI: 10.3390/nu15153495] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/02/2023] [Accepted: 08/03/2023] [Indexed: 08/13/2023] Open
Abstract
Autophagy is an evolutionarily conserved process critical in maintaining cellular homeostasis. Recently, the anticancer potential of autophagy inducers, including phytochemicals, was suggested. Indicaxanthin is a betalain pigment found in prickly pear fruit with antiproliferative and pro-apoptotic activities in colorectal cancer cells associated with epigenetic changes in selected methylation-silenced oncosuppressor genes. Here, we demonstrate that indicaxanthin induces the up-regulation of the autophagic markers LC3-II and Beclin1, and increases autophagolysosome production in Caco-2 cells. Methylomic studies showed that the indicaxanthin-induced pro-autophagic activity was associated with epigenetic changes. In addition to acting as a hypermethylating agent at the genomic level, indicaxanthin also induced significant differential methylation in 39 out of 47 autophagy-related genes, particularly those involved in the late stages of autophagy. Furthermore, in silico molecular modelling studies suggested a direct interaction of indicaxanthin with Bcl-2, which, in turn, influenced the function of Beclin1, a key autophagy regulator. External effectors, including food components, may modulate the epigenetic signature of cancer cells. This study demonstrates, for the first time, the pro-autophagic potential of indicaxanthin in human colorectal cancer cells associated with epigenetic changes and contributes to outlining its potential healthy effect in the pathophysiology of the gastrointestinal tract.
Collapse
Affiliation(s)
- Maria Antonietta Ragusa
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90128 Palermo, Italy; (M.A.R.); (F.N.); (I.C.); (S.V.); (C.S.); (G.S.); (M.L.); (C.L.); (R.C.); (A.L.); (F.C.)
| | - Flores Naselli
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90128 Palermo, Italy; (M.A.R.); (F.N.); (I.C.); (S.V.); (C.S.); (G.S.); (M.L.); (C.L.); (R.C.); (A.L.); (F.C.)
| | - Ilenia Cruciata
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90128 Palermo, Italy; (M.A.R.); (F.N.); (I.C.); (S.V.); (C.S.); (G.S.); (M.L.); (C.L.); (R.C.); (A.L.); (F.C.)
| | - Sara Volpes
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90128 Palermo, Italy; (M.A.R.); (F.N.); (I.C.); (S.V.); (C.S.); (G.S.); (M.L.); (C.L.); (R.C.); (A.L.); (F.C.)
| | - Chiara Schimmenti
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90128 Palermo, Italy; (M.A.R.); (F.N.); (I.C.); (S.V.); (C.S.); (G.S.); (M.L.); (C.L.); (R.C.); (A.L.); (F.C.)
| | - Graziella Serio
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90128 Palermo, Italy; (M.A.R.); (F.N.); (I.C.); (S.V.); (C.S.); (G.S.); (M.L.); (C.L.); (R.C.); (A.L.); (F.C.)
| | - Maurizio Mauro
- Department of Obstetrics & Gynecology and Women’s Health, Michael F. Price Center, Albert Einstein College of Medicine, Bronx, NY 10461, USA;
| | - Mariangela Librizzi
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90128 Palermo, Italy; (M.A.R.); (F.N.); (I.C.); (S.V.); (C.S.); (G.S.); (M.L.); (C.L.); (R.C.); (A.L.); (F.C.)
| | - Claudio Luparello
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90128 Palermo, Italy; (M.A.R.); (F.N.); (I.C.); (S.V.); (C.S.); (G.S.); (M.L.); (C.L.); (R.C.); (A.L.); (F.C.)
- NBFC—National Biodiversity Future Center, 90133 Palermo, Italy
| | - Roberto Chiarelli
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90128 Palermo, Italy; (M.A.R.); (F.N.); (I.C.); (S.V.); (C.S.); (G.S.); (M.L.); (C.L.); (R.C.); (A.L.); (F.C.)
| | - Chiara La Rosa
- Department of Life Sciences and Systems Biology, Neuroscience Institute Cavalieri Ottolenghi, University of Torino, 10124 Turin, Italy;
| | - Antonino Lauria
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90128 Palermo, Italy; (M.A.R.); (F.N.); (I.C.); (S.V.); (C.S.); (G.S.); (M.L.); (C.L.); (R.C.); (A.L.); (F.C.)
| | - Carla Gentile
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90128 Palermo, Italy; (M.A.R.); (F.N.); (I.C.); (S.V.); (C.S.); (G.S.); (M.L.); (C.L.); (R.C.); (A.L.); (F.C.)
| | - Fabio Caradonna
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90128 Palermo, Italy; (M.A.R.); (F.N.); (I.C.); (S.V.); (C.S.); (G.S.); (M.L.); (C.L.); (R.C.); (A.L.); (F.C.)
- NBFC—National Biodiversity Future Center, 90133 Palermo, Italy
| |
Collapse
|
7
|
Parinandi NL, Liaugminas A, Oliver PJ, Varadharaj S, Yenigalla A, Elliott AC, Arutla S, Campbell SJ, Kotha SR, Sherwani SI, Kutala VK, McDaniel JC, Maddipati KR, Kuppusamy P, Hund TJ. Classic Phytochemical Antioxidant and Lipoxygenase Inhibitor, Nordihydroguaiaretic Acid, Activates Phospholipase D through Oxidant Signaling and Tyrosine Phosphorylation Leading to Cytotoxicity in Lung Vascular Endothelial Cells. Cell Biochem Biophys 2023:10.1007/s12013-023-01128-1. [PMID: 36820994 DOI: 10.1007/s12013-023-01128-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2023] [Indexed: 02/24/2023]
Abstract
Nordihydroguaiaretic acid (NDGA), a dicatechol and phytochemical polyphenolic antioxidant and an established inhibitor of human arachidonic acid (AA) 5-lipoxygenase (LOX) and 15-LOX, is widely used to ascertain the role of LOXs in vascular endothelial cell (EC) function. As the modulatory effect of NDGA on phospholipase D (PLD), an important lipid signaling enzyme in ECs, thus far has not been reported, here we have investigated the modulation of PLD activity and its regulation by NDGA in the bovine pulmonary artery ECs (BPAECs). NDGA induced the activation of PLD (phosphatidic acid formation) in cells in a dose- and time-dependent fashion that was significantly attenuated by iron chelator and antioxidants. NDGA induced the formation of reactive oxygen species (ROS) in cells in a dose- and time-dependent manner as evidenced from fluorescence microscopy and fluorimetry of ROS and electron paramagnetic resonance spectroscopy of oxygen radicals. Also, NDGA caused a dose-dependent loss of intracellular glutathione (GSH) in BPAECs. Protein tyrosine kinase (PTyK)-specific inhibitors significantly attenuated NDGA-induced PLD activation in BPAECs. NDGA also induced a dose- and time-dependent phosphorylation of tyrosine in proteins in cells. NDGA caused in situ translocation and relocalization of both PLD1 and PLD2 isoforms, in a time-dependent fashion. Cyclooxygenase (COX) inhibitors were ineffective in attenuating NDGA-induced PLD activation in BPAECs, thus ruling out the activation of COXs by NDGA. NDGA inhibited the AA-LOX activity and leukotriene C4 (LTC4) formation in cells. On the other hand, the 5-LOX-specific inhibitors, 5, 8, 11, 14-eicosatetraynoic acid and kaempferol, were ineffective in activating PLD in BPAECs. Antioxidants and PTyK-specific inhibitors effectively attenuated NDGA cytotoxicity in BPAECs. The PLD-specific inhibitor, 5-fluoro-2-indolyl deschlorohalopemide (FIPI), significantly attenuated and protected against the NDGA-induced PLD activation and cytotoxicity in BPAECs. For the first time, these results demonstrated that NDGA, the classic phytochemical polyphenolic antioxidant and LOX inhibitor, activated PLD causing cytotoxicity in ECs through upstream oxidant signaling and protein tyrosine phosphorylation.
Collapse
Affiliation(s)
- Narasimham L Parinandi
- Lipid Signaling, Lipidomics, and Vasculotoxicity Laboratory, Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine and Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA.
| | - Alex Liaugminas
- Lipid Signaling, Lipidomics, and Vasculotoxicity Laboratory, Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine and Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| | - Patrick J Oliver
- Lipid Signaling, Lipidomics, and Vasculotoxicity Laboratory, Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine and Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| | - Saradhadevi Varadharaj
- Lipid Signaling, Lipidomics, and Vasculotoxicity Laboratory, Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine and Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| | - Anita Yenigalla
- Lipid Signaling, Lipidomics, and Vasculotoxicity Laboratory, Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine and Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| | - Austin C Elliott
- Lipid Signaling, Lipidomics, and Vasculotoxicity Laboratory, Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine and Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| | - Sukruthi Arutla
- Lipid Signaling, Lipidomics, and Vasculotoxicity Laboratory, Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine and Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| | - Steven J Campbell
- Lipid Signaling, Lipidomics, and Vasculotoxicity Laboratory, Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine and Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| | - Sainath R Kotha
- Lipid Signaling, Lipidomics, and Vasculotoxicity Laboratory, Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine and Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| | - Shariq I Sherwani
- Lipid Signaling, Lipidomics, and Vasculotoxicity Laboratory, Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine and Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| | - Vijay K Kutala
- Lipid Signaling, Lipidomics, and Vasculotoxicity Laboratory, Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine and Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| | - Jodi C McDaniel
- Lipid Signaling, Lipidomics, and Vasculotoxicity Laboratory, Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine and Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| | - Krishna Rao Maddipati
- Department of Pathology and Lipidomics Core Facility, Wayne State University, Detroit, MI, 48202, USA
| | - Periannan Kuppusamy
- Department of Medicine, Geisel School of Medicine, Dartmouth College, Lebanon, NH, 03756, USA
| | - Thomas J Hund
- Lipid Signaling, Lipidomics, and Vasculotoxicity Laboratory, Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine and Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| |
Collapse
|
8
|
de Jesus M, Guerreiro C, Brandão E, Mateus N, de Freitas V, Soares S. Study of Serial Exposures of an Astringent Green Tea Flavonoid Extract with Oral Cell-Based Models. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:2070-2081. [PMID: 36652684 DOI: 10.1021/acs.jafc.2c01918] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
It is well known that repeated exposure to phenolic compounds (PCs) raises astringency perception. However, the link between this increase and the oral cavity's interactions with salivary proteins (SPs) and other oral constituents is unknown. To delve deeper into this connection, a flavonoid-rich green tea extract was tested in a series of exposures to two oral cell-based models using a tongue cell line (HSC3) and a buccal mucosa cell line (TR146). Serial exposures show cumulative PC binding to all oral models at all concentrations of the green tea extract; however, the contribution for the first and second exposures varies. The tongue mucosal pellicle (HSC3-Mu-SP) may contribute more to first-stage astringency (retaining 0.15 ± 0.01 mg mL-1 PCs at the first exposure), whereas the buccal mucosal pellicle (TR146-Mu-SP) retained significantly less (0.08 ± 0.02 mg mL-1). Additionally, increased salivary volume (SV+), which simulates the stimulation of salivary flow brought by a food stimulus, significantly enhances PC binding, particularly for TR146 cells: TR46-Mu-SP_SV+ bound significantly higher total PC concentration (0.17 ± 0.02 mg mL-1) than the model without increased salivary volume TR146-Mu-SP_SV- (0.09 ± 0.03 mg mL-1). This could be associated with a higher contribution of these oral cells for astringency perception during repeated exposures. Furthermore, PCs adsorbed in the first exposure to cell monolayer models (+TR146 and +HSC3) change the profile of PCs bound to these models in the second exposure. Regarding the structure binding activity, PCs with a total higher number of hydroxyl groups were more bound by the models containing SP. Regarding the SP, basic proline-rich proteins (bPRPs) may be involved in the increased perception of astringency upon repeated exposures. The extent of bPRP precipitation by PCs in mucosal pellicle models for both cell lines (HSC3 and TR146) in the second exposure (76 ± 13 and 83 ± 6%, respectively) was significantly higher than in the first one (25 ± 14 and 5 ± 6%, respectively).
Collapse
Affiliation(s)
- Mónica de Jesus
- REQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade Do Porto, Rua do Campo Alegre, Porto 689, Portugal
| | - Carlos Guerreiro
- REQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade Do Porto, Rua do Campo Alegre, Porto 689, Portugal
| | - Elsa Brandão
- REQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade Do Porto, Rua do Campo Alegre, Porto 689, Portugal
| | - Nuno Mateus
- REQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade Do Porto, Rua do Campo Alegre, Porto 689, Portugal
| | - Victor de Freitas
- REQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade Do Porto, Rua do Campo Alegre, Porto 689, Portugal
| | - Susana Soares
- REQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade Do Porto, Rua do Campo Alegre, Porto 689, Portugal
| |
Collapse
|
9
|
Hossain SI, Seppelt M, Nguyen N, Stokes C, Deplazes E. The role of ion-lipid interactions and lipid packing in transient defects caused by phenolic compounds. Biophys J 2022; 121:3520-3532. [PMID: 35932150 PMCID: PMC9515000 DOI: 10.1016/j.bpj.2022.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 07/19/2022] [Accepted: 08/03/2022] [Indexed: 11/16/2022] Open
Abstract
The transient disruption of membranes for the passive permeation of ions or small molecules is a complex process relevant to understanding physiological processes and biotechnology applications. Phenolic compounds are widely studied for their antioxidant and antimicrobial properties, and some of these activities are based on the interactions of the phenolic compound with membranes. Ions are ubiquitous in cells and are known to alter the structure of phospholipid bilayers. Yet, ion-lipid interactions are usually ignored when studying the membrane-altering properties of phenolic compounds. This study aims to assess the role of Ca2+ ions on the membrane-disrupting activity of two phenolic acids and to highlight the role of local changes in lipid packing in forming transient defects or pores. Results from tethered bilayer lipid membrane electrical impedance spectroscopy experiments showed that Ca2+ significantly reduces membrane disruption by caffeic acid methyl ester and caffeic acid. As phenolic acids are known metal chelators, we used UV-vis and fluorescence spectroscopy to exclude the possibility that Ca2+ interferes with membrane disruption by binding to the phenolic compound and subsequently preventing membrane binding. Molecular dynamics simulations showed that Ca2+ but not caffeic acid methyl ester or caffeic acid increases lipid packing in POPC bilayers. The combined data confirm that Ca2+ reduces the membrane-disrupting activity of the phenolic compounds, and that Ca2+-induced changes to lipid packing govern this effect. We discuss our data in the context of ion-induced pores and transient defects and how lipid packing affects membrane disruption by small molecules.
Collapse
Affiliation(s)
- Sheikh I Hossain
- School of Life Sciences, University of Technology Sydney, Ultimo, NSW 2007, Australia; School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia, QLD 4072, Australia
| | - Mathilda Seppelt
- School of Life Sciences, University of Technology Sydney, Ultimo, NSW 2007, Australia; School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia, QLD 4072, Australia
| | - Natalie Nguyen
- School of Life Sciences, University of Technology Sydney, Ultimo, NSW 2007, Australia; School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia, QLD 4072, Australia
| | - Chelsea Stokes
- School of Life Sciences, University of Technology Sydney, Ultimo, NSW 2007, Australia; School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia, QLD 4072, Australia
| | - Evelyne Deplazes
- School of Life Sciences, University of Technology Sydney, Ultimo, NSW 2007, Australia; School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia, QLD 4072, Australia.
| |
Collapse
|
10
|
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.
Collapse
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
| |
Collapse
|
11
|
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.
Collapse
Affiliation(s)
- José Villalaín
- Institute of Research, Development, and Innovation in Healthcare Biotechnology (IDiBE), Universidad Miguel Hernández, E-03202 Elche, Spain
| |
Collapse
|
12
|
Structure determination and formation mechanism of procyanidin B2 oxidation products. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
13
|
Tsang NY, Li WF, Varhegyi E, Rong L, Zhang HJ. Ebola Entry Inhibitors Discovered from Maesa perlarius. Int J Mol Sci 2022; 23:ijms23052620. [PMID: 35269770 PMCID: PMC8910447 DOI: 10.3390/ijms23052620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/08/2022] [Accepted: 02/23/2022] [Indexed: 11/21/2022] Open
Abstract
Ebola virus disease (EVD), a disease caused by infection with Ebola virus (EBOV), is characterized by hemorrhagic fever and a high case fatality rate. With limited options for the treatment of EVD, anti-Ebola viral therapeutics need to be urgently developed. In this study, over 500 extracts of medicinal plants collected in the Lingnan region were tested against infection with Ebola-virus-pseudotyped particles (EBOVpp), leading to the discovery of Maesa perlarius as an anti-EBOV plant lead. The methanol extract (MPBE) of the stems of this plant showed an inhibitory effect against EBOVpp, with an IC50 value of 0.52 µg/mL, which was confirmed by testing the extract against infectious EBOV in a biosafety level 4 laboratory. The bioassay-guided fractionation of MPBE resulted in three proanthocyanidins (procyanidin B2 (1), procyanidin C1 (2), and epicatechin-(4β→8)-epicatechin-(4β→8)-epicatechin-(4β→8)-epicatechin (3)), along with two flavan-3-ols ((+)-catechin (4) and (−)-epicatechin (5)). The IC50 values of the compounds against pseudovirion-bearing EBOV-GP ranged from 0.83 to 36.0 µM, with 1 as the most potent inhibitor. The anti-EBOV activities of five synthetic derivatives together with six commercially available analogues, including EGCG ((−)-epigallocatechin-3-O-gallate (8)), were further investigated. Molecular docking analysis and binding affinity measurement suggested the EBOV glycoprotein could be a potential molecular target for 1 and its related compounds.
Collapse
Affiliation(s)
- Nga Yi Tsang
- Teaching and Research Division, School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong, China; (N.Y.T.); (W.-F.L.)
| | - Wan-Fei Li
- Teaching and Research Division, School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong, China; (N.Y.T.); (W.-F.L.)
| | - Elizabeth Varhegyi
- Department of Microbiology and Immunology, College of Medicine, University of Illinois Chicago, 909 South Wolcott Ave, Chicago, IL 60612, USA;
| | - Lijun Rong
- Department of Microbiology and Immunology, College of Medicine, University of Illinois Chicago, 909 South Wolcott Ave, Chicago, IL 60612, USA;
- Correspondence: (L.R.); (H.-J.Z.); Tel.: +1-312-3550203 (L.R.); +852-34112956 (H.-J.Z.)
| | - Hong-Jie Zhang
- Teaching and Research Division, School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong, China; (N.Y.T.); (W.-F.L.)
- Correspondence: (L.R.); (H.-J.Z.); Tel.: +1-312-3550203 (L.R.); +852-34112956 (H.-J.Z.)
| |
Collapse
|
14
|
Seigler DS, Friesen JB, Bisson J, Graham JG, Bedran-Russo A, McAlpine JB, Pauli GF. Do Certain Flavonoid IMPS Have a Vital Function? Front Nutr 2021; 8:762753. [PMID: 34926546 PMCID: PMC8672243 DOI: 10.3389/fnut.2021.762753] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Accepted: 10/25/2021] [Indexed: 11/22/2022] Open
Abstract
Flavonoids are a vast group of metabolites that are essential for vascular plant physiology and, thus, occur ubiquitously in plant-based/-derived foods. The solitary designation of thousands of known flavonoids hides the fact that their metabolomes are structurally highly diverse, consist of disparate subgroups, yet undergo a certain degree of metabolic interconversion. Unsurprisingly, flavonoids have been an important theme in nutrition research. Already in the 1930s, it was discovered that the ability of synthetic Vitamin C to treat scurvy was inferior to that of plant extracts containing Vitamin C. Subsequent experimental evidence led to the proposal of Vitamin P (permeability) as an essential phytochemical nutrient. However, attempts to isolate and characterize Vitamin P gave confusing and sometimes irreproducible results, which today can be interpreted as rooted in the unrecognized (residual) complexity of the intervention materials. Over the years, primarily flavonoids (and some coumarins) were known as having Vitamin P-like activity. More recently, in a NAPRALERT meta-analysis, essentially all of these Vitamin P candidates were identified as IMPs (Invalid/Improbable/Interfering Metabolic Panaceas). While the historic inability to define a single compound and specific mode of action led to general skepticism about the Vitamin P proposition for "bioflavonoids," the more logical conclusion is that several abundant and metabolically labile plant constituents fill this essential role in human nutrition at the interface of vitamins, cofactors, and micronutrients. Reviewing 100+ years of the multilingual Vitamin P and C literature provides the rationales for this conclusion and new perspectives for future research.
Collapse
Affiliation(s)
- David S. Seigler
- Department of Plant Biology, University of Illinois at Urbana Champaign, Champaign, IL, United States
| | - J. Brent Friesen
- Center for Natural Products Technologies, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, United States
- Pharmacognosy Institute, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, United States
- Physical Sciences Department, Dominican University, River Forest, IL, United States
| | - Jonathan Bisson
- Center for Natural Products Technologies, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, United States
- Pharmacognosy Institute, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, United States
| | - James G. Graham
- Center for Natural Products Technologies, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, United States
- Pharmacognosy Institute, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, United States
| | - Ana Bedran-Russo
- Pharmacognosy Institute, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, United States
- Department of Restorative Dentistry, College of Dentistry, University of Illinois at Chicago, Chicago, IL, United States
| | - James B. McAlpine
- Center for Natural Products Technologies, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, United States
- Pharmacognosy Institute, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, United States
| | - Guido F. Pauli
- Center for Natural Products Technologies, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, United States
- Pharmacognosy Institute, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, United States
| |
Collapse
|
15
|
Phimphilai S, Koonyosying P, Hutachok N, Kampoun T, Daw R, Chaiyasut C, Prasartthong-osoth V, Srichairatanakool S. Identifying Chemical Composition, Safety and Bioactivity of Thai Rice Grass Extract Drink in Cells and Animals. Molecules 2021; 26:molecules26226887. [PMID: 34833982 PMCID: PMC8621899 DOI: 10.3390/molecules26226887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 11/16/2022] Open
Abstract
Rice grass has been reported to contain bioactive compounds that possess antioxidant and free-radical scavenging activities. We aimed to assess rice grass extract (RGE) drink by determining catechin content, free-radical scavenging and iron-binding properties, as well as toxicity in cells and animals. Young rice grass (Sukhothai-1 strain) was dried, extracted with hot water and lyophilized in a vacuum chamber. The resulting extract was reconstituted with deionized water (260 mg/40 mL) and served as Sukhothai-1 rice grass extract drink (ST1-RGE). HPLC results revealed at least eight phenolic compounds, for which the major catechins were catechin, epicatechin and epigallocatechin-3-gallate (EGCG) (2.71-3.57, 0.98-1.85 and 25.47-27.55 mg/40 mL serving, respectively). Elements (As, Cu, Pb, Sn and Zn) and aflatoxin (B1, B2, G1 and G2) contents did not exceed the relevant limits when compared with WHO guideline values. Importantly, ST1-RGE drink exerted radical-scavenging, iron-chelating and anti-lipid peroxidation properties in aqueous and biological environments in a concentration-dependent manner. The drink was not toxic to cells and animals. Thus, Sukhothai-1 rice grass product is an edible drink that is rich in catechins, particularly EGCG, and exhibited antioxidant, free radical scavenging and iron-binding/chelating properties. The product represents a functional drink that is capable of alleviating conditions of oxidative stress and iron overload.
Collapse
Affiliation(s)
- Suthaya Phimphilai
- Division of Science and Food Technology, Faculty of Engineering and Agro-Industry, Maejo University, Chiang Mai 50290, Thailand;
| | - Pimpisid Koonyosying
- Oxidative Stress Research Cluster, Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; (P.K.); (N.H.); (T.K.); (R.D.)
| | - Nuntouchaporn Hutachok
- Oxidative Stress Research Cluster, Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; (P.K.); (N.H.); (T.K.); (R.D.)
| | - Tanyaluk Kampoun
- Oxidative Stress Research Cluster, Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; (P.K.); (N.H.); (T.K.); (R.D.)
| | - Rufus Daw
- Oxidative Stress Research Cluster, Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; (P.K.); (N.H.); (T.K.); (R.D.)
- School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PL, UK
| | - Chaiyavat Chaiyasut
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand;
| | | | - Somdet Srichairatanakool
- Oxidative Stress Research Cluster, Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; (P.K.); (N.H.); (T.K.); (R.D.)
- Correspondence: ; Tel.: +66-5393-5322
| |
Collapse
|
16
|
Róg T, Girych M, Bunker A. Mechanistic Understanding from Molecular Dynamics in Pharmaceutical Research 2: Lipid Membrane in Drug Design. Pharmaceuticals (Basel) 2021; 14:1062. [PMID: 34681286 PMCID: PMC8537670 DOI: 10.3390/ph14101062] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/14/2021] [Accepted: 10/15/2021] [Indexed: 11/17/2022] Open
Abstract
We review the use of molecular dynamics (MD) simulation as a drug design tool in the context of the role that the lipid membrane can play in drug action, i.e., the interaction between candidate drug molecules and lipid membranes. In the standard "lock and key" paradigm, only the interaction between the drug and a specific active site of a specific protein is considered; the environment in which the drug acts is, from a biophysical perspective, far more complex than this. The possible mechanisms though which a drug can be designed to tinker with physiological processes are significantly broader than merely fitting to a single active site of a single protein. In this paper, we focus on the role of the lipid membrane, arguably the most important element outside the proteins themselves, as a case study. We discuss work that has been carried out, using MD simulation, concerning the transfection of drugs through membranes that act as biological barriers in the path of the drugs, the behavior of drug molecules within membranes, how their collective behavior can affect the structure and properties of the membrane and, finally, the role lipid membranes, to which the vast majority of drug target proteins are associated, can play in mediating the interaction between drug and target protein. This review paper is the second in a two-part series covering MD simulation as a tool in pharmaceutical research; both are designed as pedagogical review papers aimed at both pharmaceutical scientists interested in exploring how the tool of MD simulation can be applied to their research and computational scientists interested in exploring the possibility of a pharmaceutical context for their research.
Collapse
Affiliation(s)
- Tomasz Róg
- Department of Physics, University of Helsinki, 00014 Helsinki, Finland;
| | - Mykhailo Girych
- Department of Physics, University of Helsinki, 00014 Helsinki, Finland;
| | - Alex Bunker
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, 00014 Helsinki, Finland;
| |
Collapse
|
17
|
Guarneiri LL, Paton CM, Cooper JA. Pecan-enriched diets decrease postprandial lipid peroxidation and increase total antioxidant capacity in adults at-risk for cardiovascular disease. Nutr Res 2021; 93:69-78. [PMID: 34428717 DOI: 10.1016/j.nutres.2021.07.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 07/15/2021] [Accepted: 07/16/2021] [Indexed: 12/14/2022]
Abstract
Pecans are a rich source of antioxidants, but the effect of regular consumption on post-meal responses is unknown. The objective of this study was to examine the impact of daily pecan consumption for 8 weeks on fasting and postprandial lipid peroxidation, total antioxidant capacity (TAC), and tocopherols in adults at higher risk for cardiovascular disease (CVD) (hypercholesterolemia or elevated adiposity). We hypothesized that daily pecan consumption would result in increased fasting γ-tocopherol, increased fasting and postprandial TAC, and decreased fasting and postprandial lipid peroxidation. This was a randomized, parallel, controlled trial with 3 treatments: two pecan groups and a nut free control (n = 16). The ADD group (n = 15) consumed pecans as part of a free-living diet, and the SUB group (n = 16) substituted the pecans for isocaloric foods from their habitual diet. At the pre- and post-intervention, a high saturated fat breakfast shake was consumed with postprandial blood draws over 2h. In the ADD and SUB groups, postprandial lipid peroxidation was suppressed (iAUC: 0.9 ± 1.3 to -2.9 ± 2.0 and 4.5 ± 1.7 to 0.7 ± 1.1 µM/2h, respectively; P <0.05) and TAC was elevated (iAUC: -240.8 ± 110.2 to 130.9 ± 131.7 and -227.6 ± 131.2 to 208.7 ± 145.7 µM Trolox Equivalents/2h, respectively; P <0.01) from pre- to post-intervention. Furthermore, there was an increase in γ-tocopherol from pre- to post-intervention within the ADD (1.4 ± 0.1 to 1.8 ± 0.1 µg/mL; P <0.001) and SUB groups (1.8 ± 0.2 to 2.1 ± 0.2 µg/mL; P <0.05). There were no changes in any variable within the control group. These findings suggest that daily pecan consumption protects against oxidative stress that occurs following a high-fat meal in adults at risk for CVD.
Collapse
Affiliation(s)
- Liana L Guarneiri
- Department of Nutritional Sciences, University of Georgia, Athens, Georgia
| | - Chad M Paton
- Department of Nutritional Sciences, University of Georgia, Athens, Georgia; Department of Food Science and Technology, University of Georgia, Athens, Georgia
| | - Jamie A Cooper
- Department of Nutritional Sciences, University of Georgia, Athens, Georgia.
| |
Collapse
|
18
|
Ryang J, Liu F, Ng TB. Purified antioxidant from the medicinal mushroom Phellinus pini protects rat H9c2 cell against H 2 O 2 -induced oxidative stress. J Food Biochem 2021; 45:e13818. [PMID: 34121192 DOI: 10.1111/jfbc.13818] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 05/26/2021] [Accepted: 05/28/2021] [Indexed: 01/02/2023]
Abstract
In this study, through the combination of AB-8 macroporous resin, Sephadex LH-20 column chromatography and semi-preparative HPLC, an antioxidant component was purified from the crude extract of Phellinus pini, thereby evaluating the cardioprotective effect of the fraction. As a result, total phenolic content of the 60% ethanol elution was increased by 4.8-fold after one run treatment on Sephadex LH-20 chromatography with gradient elution. After semi-preparative HPLC separation, the first peak (PP-S4-1) showed that inhibition ratio of erythrocyte hemolysis was 91.9%, and inhibition ratio of lipid peroxidation was also increased by 87.6%, at 50 μg/ml (p < .01). Based on the results of ESI-MS, 1 HNMR, 13 CNMR, and RP-HPLC compared to many published results, PP-S4-1was identified as catechin (MW 290.015, C15 H14 O6 ). The results showed that PP-S4-1 pretreatment made cell viability increased, and the generation of reactive oxygen species (ROS) inhibited. Meanwhile, PP-S4-1 remarkably decreased the fluorescence intensity of Ca2+ , and increased mitochondrial membrane potential (MMP; ΔΨm). In addition, PP-S4-1 could significantly inhibit the decrease of superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px) activity as well as the increase of MDA content in H9c2 cells induced by H2 O2 . Moreover, pretreatment with PP-S4-1 significantly improved the morphological changes and prevented H2 O2 -induced DNA damage. Therefore, this study clarifies the ability of PP-S4-1 to treat H9c2 cell oxidative stress damage induced by H2 O2 through its antioxidant effect. PRACTICAL APPLICATIONS: This research is not only helpful to elaborate the cardioprotective effect of Phellinus pini but also can contribute to the development of health foods or drug supplements for heart disease in the future. This is the first report dealing with phenolic component and cardioprotective activity of a medicinal mushroom P. pini belonging to the genus Phellinus.
Collapse
Affiliation(s)
- Junhyok Ryang
- Department of Microbiology, The Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Nankai University, Tianjin, China.,Department of Long Life Drug, Institute of Microbiology, The State Academy of Sciences, Pyongyang, DPR Korea
| | - Fang Liu
- Department of Microbiology, The Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Nankai University, Tianjin, China
| | - Tzi Bun Ng
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| |
Collapse
|
19
|
Nicolás-García M, Perucini-Avendaño M, Jiménez-Martínez C, Perea-Flores MDJ, Gómez-Patiño MB, Arrieta-Báez D, Dávila-Ortiz G. Bean phenolic compound changes during processing: Chemical interactions and identification. J Food Sci 2021; 86:643-655. [PMID: 33586793 DOI: 10.1111/1750-3841.15632] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 09/08/2020] [Accepted: 01/10/2021] [Indexed: 12/18/2022]
Abstract
The common bean (Phaseolus vulgaris L.) represents one of the main crops for human consumption, due to its nutritional and functional qualities. Phenolic compounds have beneficial health effects, and beans are an essential source of these molecules, being found mainly in the seed coat and its color depends on the concentration and type of phenolic compounds present. The bean during storage and processing, such as cooking, germination, extrusion, and fermentation, undergoes physical, chemical, and structural changes that affect the bioavailability of its nutrients; these changes are related to the interactions between phenolic compounds and other components of the food matrix. This review provides information about the identification and quantification of phenolic compounds present in beans and the changes they undergo during processing. It also includes information on the interactions between the phenolic compounds and the components of the bean's cell wall and the analytical methods used to identify the interactions of phenolic compounds with macromolecules.
Collapse
Affiliation(s)
- Mayra Nicolás-García
- Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (IPN), Av. Wilfrido Massieu S/N, Unidad Profesional Adolfo López Mateos, Zacatenco, Delegación Gustavo A. Madero, Ciudad de México, C.P. 07738, México
| | - Madeleine Perucini-Avendaño
- Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (IPN), Av. Wilfrido Massieu S/N, Unidad Profesional Adolfo López Mateos, Zacatenco, Delegación Gustavo A. Madero, Ciudad de México, C.P. 07738, México
| | - Cristian Jiménez-Martínez
- Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (IPN), Av. Wilfrido Massieu S/N, Unidad Profesional Adolfo López Mateos, Zacatenco, Delegación Gustavo A. Madero, Ciudad de México, C.P. 07738, México
| | - María de Jesús Perea-Flores
- Centro de Nanociencias y Micro y Nanotecnologías (IPN), Instituto Politécnico Nacional (IPN), Av. Luis Enrique Erro S/N, Unidad Profesional Adolfo López Mateos, Zacatenco, Delegación Gustavo A. Madero, Ciudad de México, C.P. 07738, México
| | - Mayra Beatriz Gómez-Patiño
- Centro de Nanociencias y Micro y Nanotecnologías (IPN), Instituto Politécnico Nacional (IPN), Av. Luis Enrique Erro S/N, Unidad Profesional Adolfo López Mateos, Zacatenco, Delegación Gustavo A. Madero, Ciudad de México, C.P. 07738, México
| | - Daniel Arrieta-Báez
- Centro de Nanociencias y Micro y Nanotecnologías (IPN), Instituto Politécnico Nacional (IPN), Av. Luis Enrique Erro S/N, Unidad Profesional Adolfo López Mateos, Zacatenco, Delegación Gustavo A. Madero, Ciudad de México, C.P. 07738, México
| | - Gloria Dávila-Ortiz
- Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (IPN), Av. Wilfrido Massieu S/N, Unidad Profesional Adolfo López Mateos, Zacatenco, Delegación Gustavo A. Madero, Ciudad de México, C.P. 07738, México
| |
Collapse
|
20
|
Science and Healthy Meals in the World: Nutritional Epigenomics and Nutrigenetics of the Mediterranean Diet. Nutrients 2020; 12:nu12061748. [PMID: 32545252 PMCID: PMC7353392 DOI: 10.3390/nu12061748] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 06/07/2020] [Accepted: 06/08/2020] [Indexed: 02/06/2023] Open
Abstract
The Mediterranean Diet (MD), UNESCO Intangible Cultural Heritage of Humanity, has become a scientific topic of high interest due to its health benefits. The aim of this review is to pick up selected studies that report nutrigenomic or nutrigenetic data and recapitulate some of the biochemical/genomic/genetic aspects involved in the positive health effects of the MD. These include (i) the antioxidative potential of its constituents with protective effects against several diseases; (ii) the epigenetic and epigenomic effects exerted by food components, such as Indacaxanthin, Sulforaphane, and 3-Hydroxytyrosol among others, and their involvement in the modulation of miRNA expression; (iii) the existence of predisposing or protective human genotypes due to allelic diversities and the impact of the MD on disease risk. A part of the review is dedicated to the nutrigenomic effects of the main cooking methods used in the MD and also to a comparative analysis of the nutrigenomic properties of the MD and other diet regimens and non-MD-related aliments. Taking all the data into account, the traditional MD emerges as a diet with a high antioxidant and nutrigenomic modulation power, which is an example of the “Environment-Livings-Environment” relationship and an excellent patchwork of interconnected biological actions working toward human health.
Collapse
|
21
|
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.
Collapse
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.
| |
Collapse
|
22
|
The Interaction of Flavonols with Membrane Components: Potential Effect on Antioxidant Activity. J Membr Biol 2020; 253:57-71. [DOI: 10.1007/s00232-019-00105-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Accepted: 12/14/2019] [Indexed: 11/25/2022]
|
23
|
Di Nunzio M, Picone G, Pasini F, Chiarello E, Caboni MF, Capozzi F, Gianotti A, Bordoni A. Olive oil by-product as functional ingredient in bakery products. Influence of processing and evaluation of biological effects. Food Res Int 2019; 131:108940. [PMID: 32247504 DOI: 10.1016/j.foodres.2019.108940] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 12/19/2019] [Accepted: 12/20/2019] [Indexed: 01/11/2023]
Abstract
Nowadays, the strong demand for adequate nutrition is accompanied by concern about environmental pollution and there is a considerable emphasis on the recovery and recycling of food by-products and wastes. In this study, we focused on the exploitation of olive pomace as functional ingredient in biscuits and bread. Standard and enriched bakery products were made using different flours and fermentation protocols. After characterization, they were in vitro digested and used for supplementation of intestinal cells (Caco-2), which underwent exogenous inflammation. The enrichment caused a significant increase in the phenolic content in all products, particularly in the sourdough fermented ones. Sourdough fermentation also increased tocol concentration. The increased concentration of bioactive molecules did not reflect the anti-inflammatory effect, which was modulated by the baking procedure. Conventionally fermented bread enriched with 4% pomace and sourdough fermented, not-enriched bread had the greatest anti-inflammatory effect, significantly reducing IL-8 secretion in Caco-2 cells. The cell metabolome was modified only after supplementation with sourdough fermented bread enriched with 4% pomace, probably due to the high concentration of tocopherol that acted synergistically with polyphenols. Our data highlight that changes in chemical composition cannot predict changes in functionality. It is conceivable that matrices (including enrichment) and processing differently modulated bioactive bioaccessibility, and consequently functionality.
Collapse
Affiliation(s)
- Mattia Di Nunzio
- Department of Agricultural and Food Sciences - DISTAL (DISTAL), University of Bologna, Piazza Goidanich 60, 47521 Cesena, Italy; Interdepartmental Centre for Industrial Agri-Food Research (CIRI), University of Bologna, Piazza Goidanich 60, 47521 Cesena, Italy
| | - Gianfranco Picone
- Department of Agricultural and Food Sciences - DISTAL (DISTAL), University of Bologna, Piazza Goidanich 60, 47521 Cesena, Italy
| | - Federica Pasini
- Interdepartmental Centre for Industrial Agri-Food Research (CIRI), University of Bologna, Piazza Goidanich 60, 47521 Cesena, Italy
| | - Elena Chiarello
- Interdepartmental Centre for Industrial Agri-Food Research (CIRI), University of Bologna, Piazza Goidanich 60, 47521 Cesena, Italy
| | - Maria Fiorenza Caboni
- Department of Agricultural and Food Sciences - DISTAL (DISTAL), University of Bologna, Piazza Goidanich 60, 47521 Cesena, Italy; Interdepartmental Centre for Industrial Agri-Food Research (CIRI), University of Bologna, Piazza Goidanich 60, 47521 Cesena, Italy
| | - Francesco Capozzi
- Department of Agricultural and Food Sciences - DISTAL (DISTAL), University of Bologna, Piazza Goidanich 60, 47521 Cesena, Italy; Interdepartmental Centre for Industrial Agri-Food Research (CIRI), University of Bologna, Piazza Goidanich 60, 47521 Cesena, Italy
| | - Andrea Gianotti
- Department of Agricultural and Food Sciences - DISTAL (DISTAL), University of Bologna, Piazza Goidanich 60, 47521 Cesena, Italy; Interdepartmental Centre for Industrial Agri-Food Research (CIRI), University of Bologna, Piazza Goidanich 60, 47521 Cesena, Italy
| | - Alessandra Bordoni
- Department of Agricultural and Food Sciences - DISTAL (DISTAL), University of Bologna, Piazza Goidanich 60, 47521 Cesena, Italy; Interdepartmental Centre for Industrial Agri-Food Research (CIRI), University of Bologna, Piazza Goidanich 60, 47521 Cesena, Italy.
| |
Collapse
|
24
|
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.
Collapse
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
| |
Collapse
|
25
|
Lu J, Tu P, Feng Y, Li N, Xu X, Li K, Yao Y, Han J, Liu W. Dietary interference on the oxidation and hydrolysis of liposomes during
in vitro
digestion. Int J Food Sci Technol 2019. [DOI: 10.1111/ijfs.14356] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Junmeng Lu
- School of Food Science and Biotechnology Zhejiang Gongshang University Hangzhou 310018 China
| | - Piaohan Tu
- School of Food Science and Biotechnology Zhejiang Gongshang University Hangzhou 310018 China
| | - Yanwen Feng
- School of Food Science and Biotechnology Zhejiang Gongshang University Hangzhou 310018 China
| | - Na Li
- School of Food Science and Biotechnology Zhejiang Gongshang University Hangzhou 310018 China
| | - Xiankang Xu
- School of Food Science and Biotechnology Zhejiang Gongshang University Hangzhou 310018 China
| | - Kexuan Li
- School of Food Science and Biotechnology Zhejiang Gongshang University Hangzhou 310018 China
| | - Yixin Yao
- School of Food Science and Biotechnology Zhejiang Gongshang University Hangzhou 310018 China
| | - Jianzhong Han
- School of Food Science and Biotechnology Zhejiang Gongshang University Hangzhou 310018 China
| | - Weilin Liu
- School of Food Science and Biotechnology Zhejiang Gongshang University Hangzhou 310018 China
| |
Collapse
|
26
|
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]
|
27
|
Rossin D, Barbosa-Pereira L, Iaia N, Testa G, Sottero B, Poli G, Zeppa G, Biasi F. A Dietary Mixture of Oxysterols Induces In Vitro Intestinal Inflammation through TLR2/4 Activation: The Protective Effect of Cocoa Bean Shells. Antioxidants (Basel) 2019; 8:antiox8060151. [PMID: 31151323 PMCID: PMC6617147 DOI: 10.3390/antiox8060151] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 05/24/2019] [Accepted: 05/25/2019] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Exaggerated Toll-like receptor (TLR)-mediated immune and inflammatory responses play a role in inflammatory bowel diseases. This report deals with the ability of a mixture of oxysterols widely present in cholesterol-rich foods to induce in vitro intestinal inflammation through TLR up-regulation. The anti-inflammatory action of four cocoa bean shell (CBS) extracts with different polyphenol content, was tested. METHODS Differentiated intestinal CaCo-2 cells were treated with a dietary oxysterol mixture (Oxy-mix) (60 µM). The expression and activation of TLR2 and TLR4, as well as the production of their downstream signaling effectors IL-8, IFNβ and TNFα were analyzed in the presence or absence of TLR antibodies. Honduras CBS extracts were characterized for their polyphenol contents; their anti-inflammatory action was analyzed in CaCo-2 cells treated with Oxy-mix. RESULTS Oxysterol-dependent TLR-2 and TLR4 over-expression and activation together with cytokine induction were abolished by blocking TLRs with specific antibodies. Polyphenol-rich CBS extracts consisting of high quantities of (-)-epicatechin and tannins also prevented TLR induction. CONCLUSIONS TLR2 and TLR4 mainly contribute to inducing oxysterol-dependent intestinal inflammation. The fractionation method of CBS allowed the recovery of fractions rich in (-)-epicatechin and tannins able to counteract oxysterol-induced inflammation, thus highlighting the beneficial biological potential of specific CBS extracts.
Collapse
Affiliation(s)
- Daniela Rossin
- Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano (Turin), Italy.
| | - Letricia Barbosa-Pereira
- Department of Agricultural, Forestry, and Food Sciences (DISAFA), 10095 Grugliasco (Turin), Italy.
| | - Noemi Iaia
- Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano (Turin), Italy.
| | - Gabriella Testa
- Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano (Turin), Italy.
| | - Barbara Sottero
- Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano (Turin), Italy.
| | - Giuseppe Poli
- Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano (Turin), Italy.
| | - Giuseppe Zeppa
- Department of Agricultural, Forestry, and Food Sciences (DISAFA), 10095 Grugliasco (Turin), Italy.
| | - Fiorella Biasi
- Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano (Turin), Italy.
| |
Collapse
|
28
|
Salazar PB, Dupuy FG, de Athayde Moncorvo Collado A, Minahk CJ. Membrane order and ionic strength modulation of the inhibition of the membrane-bound acetylcholinesterase by epigallocatechin‑3‑gallate. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2019; 1861:170-177. [DOI: 10.1016/j.bbamem.2018.08.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 08/01/2018] [Accepted: 08/09/2018] [Indexed: 10/28/2022]
|
29
|
Bunte K, Hensel A, Beikler T. Polyphenols in the prevention and treatment of periodontal disease: A systematic review of in vivo, ex vivo and in vitro studies. Fitoterapia 2018; 132:30-39. [PMID: 30496806 DOI: 10.1016/j.fitote.2018.11.012] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 11/13/2018] [Accepted: 11/24/2018] [Indexed: 12/18/2022]
Abstract
Plant-derived polyphenols with antimicrobial and immunomodulatory characteristics appear to provide a variety of oral health benefits. Thus, the aim of the present study was to review the scientific literature to identify these effects of polyphenols on periodontal pathogens and inflammation. A MEDLINE search from 1st January 2013 to 18th January 2018 was performed to identify studies reporting polyphenol-containing plant extracts. Reports regarding pure compounds and essential oils, as well as effects on bacteria that are not defined as periodontal pathogens, were excluded. Thirty-eight studies matched the selection criteria. Studies on immunomodulatory effects included in vitro, ex vivo, and in vivo studies (n = 23), whereas studies reporting antibacterial effects against periodontal pathogens included only in vitro studies (n = 18). Three studies were included in both groups. The antibacterial effects were characterised by inhibition of bacterial growth, adhesion to oral cells, and enzymatic activity. Decreased secretion of pro-inflammatory and increased secretion of anti-inflammatory cytokines were demonstrated. Higher attachment levels, lower inflammation, and bone loss were reported by in vivo studies. Due to the high heterogeneity, it is difficult to draw clear conclusions for applicability; nevertheless, polyphenols have great potential as antimicrobial and immunomodulatory substances in the treatment and prevention of periodontal disease.
Collapse
Affiliation(s)
| | - Andreas Hensel
- University of Münster, Institute of Pharmaceutical Biology and Phytochemistry, Corrensstr. 48, 48149 Münster, Germany.
| | - Thomas Beikler
- University Medical Centre Hamburg-Eppendorf, Department of Periodontics, Preventive and Restorative Dentistry, Building O58, Martinistr. 52, 20246 Hamburg, Germany.
| |
Collapse
|
30
|
Caro AA, Davis A, Fobare S, Horan N, Ryan C, Schwab C. Antioxidant and pro-oxidant mechanisms of (+) catechin in microsomal CYP2E1-dependent oxidative stress. Toxicol In Vitro 2018; 54:1-9. [PMID: 30195042 DOI: 10.1016/j.tiv.2018.09.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 08/17/2018] [Accepted: 09/03/2018] [Indexed: 02/07/2023]
Abstract
The objectives of this work were to evaluate the effects of catechin on cytochrome P450 2E1 (CYP2E1)-dependent oxidative stress. Microsomes co-expressing human CYP2E1 with NADPH cytochrome P450 reductase and cytochrome b5 were incubated with NADPH and DTPA at pH 7.0. Superoxide anion generation was specifically detected by spin-trapping with DEPMPO. Generation of the DEPMPO-OOH adduct was not observed in the absence of CYP2E1 and in the presence of superoxide dismutase (SOD) or catechin, while catalase was ineffective. Reactive oxygen species generation was detected with 1-hydroxy-3-carboxy-2,2,5,5-tetramethylpyrrolidine (CPH) by the EPR-detection of its oxidation product, 3-carboxy-proxyl radical (CP●). CP● generation was not observed in the absence of CYP2E1 and in the presence of SOD, while catalase was ineffective. In contrast, catechin increased CPH oxidation, an effect that was not observed in the absence of CYP2E1 or in the presence of SOD (but not catalase), and was not associated with an increase in oxygen consumption. Catechin also increased the non-specific oxidation of the probes CPH and hydroethidine by the superoxide anion-generating system xanthine plus xanthine oxidase. Catechin oxidized CPH in the presence of horseradish peroxidase plus hydrogen peroxide, a catechin radical-generating system. In conclusion, catechin exhibits both antioxidant (superoxide-scavenging) and pro-oxidant effects under CYP2E1-dependent oxidative stress.
Collapse
Affiliation(s)
- Andres A Caro
- Chemistry Department, Hendrix College, Conway, AR 72032, United States.
| | - Alanna Davis
- Chemistry Department, Hendrix College, Conway, AR 72032, United States
| | - Sydney Fobare
- Chemistry Department, Hendrix College, Conway, AR 72032, United States
| | - Nicholas Horan
- Chemistry Department, Hendrix College, Conway, AR 72032, United States
| | - Cameron Ryan
- Chemistry Department, Hendrix College, Conway, AR 72032, United States
| | - Cara Schwab
- Chemistry Department, Hendrix College, Conway, AR 72032, United States
| |
Collapse
|
31
|
Socrier L, Quéro A, Verdu M, Song Y, Molinié R, Mathiron D, Pilard S, Mesnard F, Morandat S. Flax phenolic compounds as inhibitors of lipid oxidation: Elucidation of their mechanisms of action. Food Chem 2018; 274:651-658. [PMID: 30372990 DOI: 10.1016/j.foodchem.2018.08.126] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 08/24/2018] [Accepted: 08/28/2018] [Indexed: 12/16/2022]
Abstract
Polyunsaturated fatty acids are particularly sensitive to the damages due to reactive oxygen species and lipid oxidation has been reported to be involved in the degradation of food as well as in the early stages of several diseases. Our objective was to study the mechanisms of action of flax (Linum usitatissimum) phenolic compounds to prevent membrane lipid oxidation. To do so, several biophysical techniques (oxidative stress, surface tension, fluorescence spectroscopy and HPLC) were used to investigate the ability of the compounds to prevent lipid oxidation and to interact with membranes. We evidenced a relationship between the structure and the antioxidant efficiency as aglycone compounds were significantly more efficient (p < 0.05) than glucoside compounds. In addition, our results revealed that aglycone lignans spontaneously penetrated the membrane contrary to aglycone hydroxycinnamic acids. To conclude, the comparison of the antioxidant efficiencies revealed that membrane inserted compounds better inhibited lipid oxidation than non-inserted compounds.
Collapse
Affiliation(s)
- Larissa Socrier
- Sorbonne Universités, Université de technologie de Compiègne, Laboratoire de Génie Enzymatique et Cellulaire, FRE 3580 CNRS, Centre de recherches de Royallieu, CS 60319, 60203 Compiègne cedex, France
| | - Anthony Quéro
- Université Picardie Jules Verne, EA3900 BioPI - UFR de Pharmacie, 1 rue des Louvels, 80037 Amiens cedex, France
| | - Margaux Verdu
- Sorbonne Universités, Université de technologie de Compiègne, Laboratoire de Génie Enzymatique et Cellulaire, FRE 3580 CNRS, Centre de recherches de Royallieu, CS 60319, 60203 Compiègne cedex, France
| | - Yiming Song
- Sorbonne Universités, Université de technologie de Compiègne, Laboratoire de Génie Enzymatique et Cellulaire, FRE 3580 CNRS, Centre de recherches de Royallieu, CS 60319, 60203 Compiègne cedex, France
| | - Roland Molinié
- Université Picardie Jules Verne, EA3900 BioPI - UFR de Pharmacie, 1 rue des Louvels, 80037 Amiens cedex, France
| | - David Mathiron
- Université Picardie Jules Verne, Plateforme analytique, Rue Dallery - Passage du sourire d'Avril, 80039 Amiens cedex, France
| | - Serge Pilard
- Université Picardie Jules Verne, Plateforme analytique, Rue Dallery - Passage du sourire d'Avril, 80039 Amiens cedex, France
| | - François Mesnard
- Université Picardie Jules Verne, EA3900 BioPI - UFR de Pharmacie, 1 rue des Louvels, 80037 Amiens cedex, France
| | - Sandrine Morandat
- Sorbonne Universités, Université de technologie de Compiègne, Laboratoire de Génie Enzymatique et Cellulaire, FRE 3580 CNRS, Centre de recherches de Royallieu, CS 60319, 60203 Compiègne cedex, France.
| |
Collapse
|
32
|
Shen Q, Wang Y, Shen J, Jiang L, Wei C, Zhang H. Growth and Cell Properties of Modified Lactobacillus plantarum CICC21001 with Supplementing C 18-FFAs to Growth Medium in vitro. Curr Microbiol 2018; 75:1133-1141. [PMID: 29704124 DOI: 10.1007/s00284-018-1499-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 04/23/2018] [Indexed: 01/18/2023]
Abstract
Fatty acids (FAs) are one of the important factors that can influence cell growth and membrane composition. The aim of this study was to investigate the influence of supplementing MLM+ growth medium with C18 free fatty acids (C18-FFAs), including stearic (C18:0), oleic (C18:1), linoleic (C18:2), and linolenic (C18:3) acid, on the growth of Lactobacillus plantarum CICC21001 by forming ion pairs with lysine to increase the solubility of FAs in liquid medium. The utilization of C18-FFAs was further confirmed by GC-FID. The investigation of cell properties, including cell surface hydrophobicity and zeta potential, was carried out for the modified L. plantarum and control group (non-supplementation). Furthermore, cell survival was measured in real time under heat (at 55 and 62 °C for 5 min), acid (pH 2.2), and bile salt stress. Our results indicated that the action of L. plantarum was modulated by assimilating C18-FFAs. This study suggested that C18-FFAs altered the life cycles and physiochemical properties of L. plantarum, which provided a guideline for probiotics production and their medical application.
Collapse
Affiliation(s)
- Qinke Shen
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Yuxian Wang
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Jian Shen
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Ling Jiang
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816, China
| | - Ce Wei
- College of Biological and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Hongman Zhang
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China.
| |
Collapse
|
33
|
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.
Collapse
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.
| |
Collapse
|
34
|
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: 58] [Impact Index Per Article: 9.7] [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.
Collapse
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
| |
Collapse
|
35
|
Deiana M, Calfapietra S, Incani A, Atzeri A, Rossin D, Loi R, Sottero B, Iaia N, Poli G, Biasi F. Derangement of intestinal epithelial cell monolayer by dietary cholesterol oxidation products. Free Radic Biol Med 2017; 113:539-550. [PMID: 29102636 DOI: 10.1016/j.freeradbiomed.2017.10.390] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 10/23/2017] [Accepted: 10/31/2017] [Indexed: 12/22/2022]
Abstract
The emerging role of the diet in the incidence of intestinal inflammatory diseases has stimulated research on the influence of eating habits with pro-inflammatory properties in inducing epithelial barrier disturbance. Cholesterol oxidation products, namely oxysterols, have been shown to promote and sustain oxidative/inflammatory reactions in human digestive tract. This work investigated in an in vitro model the potential ability of a combination of dietary oxysterols representative of a hyper-cholesterol diet to induce the loss of intestinal epithelial layer integrity. The components of the experimental mixture were the main oxysterols stemming from heat-induced cholesterol auto-oxidation, namely 7-ketocholesterol, 5α,6α-and 5β,6β-epoxycholesterol, 7α- and 7β-hydroxycholesterol. These compounds added to monolayers of differentiated CaCo-2 cells in combination or singularly, caused a time-dependent induction of matrix metalloproteinases (MMP)-2 and -9, also known as gelatinases. The hyperactivation of MMP-2 and -9 was found to be associated with decreased levels of the tight junctions zonula occludens-1 (ZO-1), occludin and Junction Adhesion Molecule-A (JAM-A). Together with such a protein loss, particularly evident for ZO-1, a net perturbation of spatial localization of the three tight junctions was observed. Cell monolayer pre-treatment with the selective inhibitor of MMPs ARP100 or polyphenol (-)-epicathechin, previously shown to inhibit NADPH oxidase in the same model system, demonstrated that the decrease of the three tight junction proteins was mainly a consequence of MMPs induction, which was in turn dependent on the pro-oxidant property of the oxysterols investigated. Although further investigation on oxysterols intestinal layer damage mechanism is to be carried on, the consequent - but incomplete - prevention of oxysterols-dependent TJs alteration due to MMPs inhibition, avoided the loss of scaffold protein ZO-1, with possible significant recovery of intestinal monolayer integrity.
Collapse
Affiliation(s)
- Monica Deiana
- Dept. of Biomedical Sciences, Pathology Section, University of Cagliari, 09124 Cagliari, Italy.
| | - Simone Calfapietra
- Dept. of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Turin, Italy.
| | - Alessandra Incani
- Dept. of Biomedical Sciences, Pathology Section, University of Cagliari, 09124 Cagliari, Italy.
| | - Angela Atzeri
- Dept. of Biomedical Sciences, Pathology Section, University of Cagliari, 09124 Cagliari, Italy.
| | - Daniela Rossin
- Dept. of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Turin, Italy.
| | - Roberto Loi
- Dept. of Biomedical Sciences, Pathology Section, University of Cagliari, 09124 Cagliari, Italy.
| | - Barbara Sottero
- Dept. of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Turin, Italy.
| | - Noemi Iaia
- Dept. of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Turin, Italy.
| | - Giuseppe Poli
- Dept. of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Turin, Italy.
| | - Fiorella Biasi
- Dept. of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Turin, Italy.
| |
Collapse
|
36
|
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.
Collapse
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.
| |
Collapse
|
37
|
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
| |
Collapse
|
38
|
Kulakowski D, Leme-Kraus AA, Nam JW, McAlpine J, Chen SN, Pauli GF, Ravindran S, Bedran-Russo AK. Oligomeric proanthocyanidins released from dentin induce regenerative dental pulp cell response. Acta Biomater 2017; 55:262-270. [PMID: 28365481 DOI: 10.1016/j.actbio.2017.03.051] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 03/01/2017] [Accepted: 03/28/2017] [Indexed: 01/04/2023]
Abstract
Proanthocyanidins (PACs) are plant-derived, multifunctional compounds that possess high interactivity with extracellular matrix (ECM) components. The documented affinity of PACs for type-I collagen is directly correlated with their structural features and degree of polymerization. In this investigation, centrifugal partition chromatography (CPC) was used to sequentially deplete less active monomeric and polymeric PACs from a crude Pinus massoniana bark extract to create refined mixtures enriched in oligomeric PACs. The ability of these oligomeric PACs to modify the mechanical properties of the dentin collagen matrix and their biocompatibility with dental pulp cells (DPCs) was evaluated in an innovative biomimetic environment. The refined mixtures displayed high interactivity with dentin collagen as demonstrated by a significant increase (>5-fold) in the modulus of elasticity of the dentin matrix. In a simplified model of the dentin-DPC complex, DPCs embedded within their native ECM in the presence of PAC-treated dentin exhibited increased proliferation. Quantitative gene expression analyses indicated that exposure to PAC-treated dentin increased the expression of key biomineralization and odontogenic differentiation regulators, including RUNX2, BMP2, OCN, and DSPP. LC-MS/MS analysis revealed that PACs two to four units long (dimers, trimers, and tetramers) were being released from dentin into media, influencing cell behavior. Overall, the results suggested that PAC dimers, trimers, and tetramers are not only biocompatible, but enhance the differentiation of DPCs towards a phenotype that favors biomineralization. PAC-enriched refined mixtures can influence the field of biomaterials and regeneration by serving as renewable, non-cytotoxic agents that can increase the mechanical properties of biomaterials. STATEMENT OF SIGNIFICANCE Pine bark extract is a renewable source of structurally diverse proanthocyanidins (PACs), multifunctional compounds whose interaction with collagen can be tailored to specific purposes by enrichment of selected PACs from the complex mixture. Oligomeric PACs were enriched from the extract and were shown here to sustain desired tissue modification and were thus assessed for cellular response in a model of the dentin-pulp interface. This model was developed to mimic leaching of potentially reactive compounds into pulp tissue. Dental pulp cells exposed to PAC-treated dentin showed increased proliferation and expression of genes necessary for extracellular matrix deposition and biomineralization, processes crucial for forming new dentin. Thus, collagen-interactive PACs may also enhance tissue regeneration and have broad impact in tissue engineering.
Collapse
Affiliation(s)
- Daniel Kulakowski
- Department of Medicinal Chemistry & Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Ariene A Leme-Kraus
- Department of Restorative Dentistry, College of Dentistry, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Joo-Won Nam
- Department of Medicinal Chemistry & Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States; College of Pharmacy, Yeungnam University, Gyeongsan, Gyeongbuk 712-749, Republic of Korea
| | - James McAlpine
- Department of Medicinal Chemistry & Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Shao-Nong Chen
- Department of Medicinal Chemistry & Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Guido F Pauli
- Department of Medicinal Chemistry & Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Sriram Ravindran
- Department of Oral Biology, College of Dentistry, University of Illinois at Chicago, Chicago, IL 60612, United States.
| | - Ana K Bedran-Russo
- Department of Restorative Dentistry, College of Dentistry, University of Illinois at Chicago, Chicago, IL 60612, United States
| |
Collapse
|
39
|
Smeriglio A, Barreca D, Bellocco E, Trombetta D. Proanthocyanidins and hydrolysable tannins: occurrence, dietary intake and pharmacological effects. Br J Pharmacol 2017; 174:1244-1262. [PMID: 27646690 PMCID: PMC5429339 DOI: 10.1111/bph.13630] [Citation(s) in RCA: 310] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 09/07/2016] [Accepted: 09/14/2016] [Indexed: 12/14/2022] Open
Abstract
Tannins are a heterogeneous group of high MW, water-soluble, polyphenolic compounds, naturally present in cereals, leguminous seeds and, predominantly, in many fruits and vegetables, where they provide protection against a wide range of biotic and abiotic stressors. Tannins exert several pharmacological effects, including antioxidant and free radical scavenging activity as well as antimicrobial, anti-cancer, anti-nutritional and cardio-protective properties. They also seem to exert beneficial effects on metabolic disorders and prevent the onset of several oxidative stress-related diseases. Although the bioavailability and pharmacokinetic data for these phytochemicals are still sparse, gut absorption of these compounds seems to be inversely correlated with the degree of polymerization. Further studies are mandatory to better clarify how these molecules and their metabolites are able to cross the intestinal barrier in order to exert their biological properties. This review summarizes the current literature on tannins, focusing on the main, recently proposed mechanisms of action that underlie their pharmacological and disease-prevention properties, as well as their bioavailability, safety and toxicology. LINKED ARTICLES This article is part of a themed section on Principles of Pharmacological Research of Nutraceuticals. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v174.11/issuetoc.
Collapse
Affiliation(s)
- Antonella Smeriglio
- Department of Chemical, Biological, Pharmaceutical and Environmental SciencesUniversity of MessinaMessinaItaly
| | - Davide Barreca
- Department of Chemical, Biological, Pharmaceutical and Environmental SciencesUniversity of MessinaMessinaItaly
| | - Ersilia Bellocco
- Department of Chemical, Biological, Pharmaceutical and Environmental SciencesUniversity of MessinaMessinaItaly
| | - Domenico Trombetta
- Department of Chemical, Biological, Pharmaceutical and Environmental SciencesUniversity of MessinaMessinaItaly
| |
Collapse
|
40
|
Rempe CS, Burris KP, Lenaghan SC, Stewart CN. The Potential of Systems Biology to Discover Antibacterial Mechanisms of Plant Phenolics. Front Microbiol 2017; 8:422. [PMID: 28360902 PMCID: PMC5352675 DOI: 10.3389/fmicb.2017.00422] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 02/28/2017] [Indexed: 12/13/2022] Open
Abstract
Drug resistance of bacterial pathogens is a growing problem that can be addressed through the discovery of compounds with novel mechanisms of antibacterial activity. Natural products, including plant phenolic compounds, are one source of diverse chemical structures that could inhibit bacteria through novel mechanisms. However, evaluating novel antibacterial mechanisms of action can be difficult and is uncommon in assessments of plant phenolic compounds. With systems biology approaches, though, antibacterial mechanisms can be assessed without the bias of target-directed bioassays to enable the discovery of novel mechanism(s) of action against drug resistant microorganisms. This review article summarizes the current knowledge of antibacterial mechanisms of action of plant phenolic compounds and discusses relevant methodology.
Collapse
Affiliation(s)
- Caroline S. Rempe
- College of Arts and Sciences, Graduate School of Genome Science and Technology, University of TennesseeKnoxville, TN, USA
| | - Kellie P. Burris
- Department of Food Science, University of TennesseeKnoxville, TN, USA
- Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State UniversityRaleigh, NC, USA
| | - Scott C. Lenaghan
- Department of Food Science, University of TennesseeKnoxville, TN, USA
- Department of Mechanical, Aerospace, and Biomedical Engineering, University of TennesseeKnoxville, TN, USA
| | - C. Neal Stewart
- College of Arts and Sciences, Graduate School of Genome Science and Technology, University of TennesseeKnoxville, TN, USA
- Department of Plant Sciences, University of TennesseeKnoxville, TN, USA
| |
Collapse
|
41
|
Zhu W, Xiong L, Peng J, Deng X, Gao J, Li CM. Molecular Insight into Affinities of Gallated and Nongallated Proanthocyanidins Dimers to Lipid Bilayers. Sci Rep 2016; 6:37680. [PMID: 27874097 PMCID: PMC5118708 DOI: 10.1038/srep37680] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 11/01/2016] [Indexed: 12/22/2022] Open
Abstract
Experimental studies have proved the beneficial effects of proanthocyanidins (Pas) relating to interaction with the cell membrane. But the detailed mechanisms and structure-function relationship was unclear. In present study, molecular dynamics (MD) simulations were used to study the interactions of four PA dimers with a lipid bilayer composed of 1:1 mixed 1-palmitoyl-2-oleoyl phosphatidylcholine (POPC) and 1-palmitoyl-2-oleoyl phosphatidylethanolamine (POPE). The results showed that the gallated PA dimers had much higher affinities to the bilayer with lower binding free energies compared with nongallated PA dimers. The gallated PA dimers penetrated deeper into the bilayer and formed more hydrogen bonds (H-bonds) with bilayer oxygen atoms, especially the deeper oxygen atoms of the lipids simultaneously, thus inducing stronger lateral expansion of the membrane and lipid tails disorder. The present results provided molecular insights into the interactions between PA dimers and bio-membranes and agreed with our experimental results well. These molecular interactions helped to elucidate the structure-function relationship of the PA dimers and provided a foundation for a better understanding of the underlying mechanisms of the bioactivities of PA oligomers.
Collapse
Affiliation(s)
- Wei Zhu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Le Xiong
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jinming Peng
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xiangyi Deng
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jun Gao
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan, 430070, China
| | - Chun-Mei 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
| |
Collapse
|
42
|
Procyanidin A2 Modulates IL-4-Induced CCL26 Production in Human Alveolar Epithelial Cells. Int J Mol Sci 2016; 17:ijms17111888. [PMID: 27845745 PMCID: PMC5133887 DOI: 10.3390/ijms17111888] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 11/08/2016] [Accepted: 11/08/2016] [Indexed: 12/16/2022] Open
Abstract
Allergic asthma is an inflammatory lung disease that is partly sustained by the chemokine eotaxin-3 (CCL26), which extends eosinophil migration into tissues long after allergen exposure. Modulation of CCL26 could represent a means to mitigate airway inflammation. Here we evaluated procyanidin A2 as a means of modulating CCL26 production and investigated interactions with the known inflammation modulator, Interferon γ (IFNγ). We used the human lung epithelial cell line A549 and optimized the conditions for inducing CCL26. Cells were exposed to a range of procyanidin A2 or IFNγ concentrations for varied lengths of time prior to an inflammatory insult of interleukin-4 (IL-4) for 24 h. An enzyme-linked immunosorbent assay was used to measure CCL26 production. Exposing cells to 5 μM procyanidin A2 (prior to IL-4) reduced CCL26 production by 35% compared with control. Greatest inhibition by procyanidin A2 was seen with a 2 h exposure prior to IL-4, whereas IFNγ inhibition was greatest at 24 h. Concomitant incubation of procyanidin A2 and IFNγ did not extend the inhibitory efficacy of procyanidin A2. These data provide evidence that procyanidin A2 can modulate IL-4-induced CCL26 production by A549 lung epithelial cells and that it does so in a manner that is different from IFNγ.
Collapse
|
43
|
Smeriglio A, Barreca D, Bellocco E, Trombetta D. Proanthocyanidins and hydrolysable tannins: occurrence, dietary intake and pharmacological effects. Br J Pharmacol 2016. [DOI: 10.1111/bph.13630 pmid: 27646690] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Affiliation(s)
- Antonella Smeriglio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences; University of Messina; Messina Italy
| | - Davide Barreca
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences; University of Messina; Messina Italy
| | - Ersilia Bellocco
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences; University of Messina; Messina Italy
| | - Domenico Trombetta
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences; University of Messina; Messina Italy
| |
Collapse
|
44
|
Zhu W, Xiong L, Peng J, Deng X, Gao J, Li CM. Structure-Dependent Membrane-Perturbing Potency of Four Proanthocyanidin Dimers on 3T3-L1 Preadipocytes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:7022-7032. [PMID: 27588748 DOI: 10.1021/acs.jafc.6b02671] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Proanthocyanidins (PAs) have been widely recognized for their broad spectrum of beneficial health effects, which are highly structure-dependent. It was found that PA dimers epicatechin-3-gallate-(4β→8,2β→O→7)-epicatechin-3-gallate (A-type ECG dimer) and epigallocatechin-3-gallate-(4β→,2β→O→7)-epigallocatechin-3-gallate (A-type EGCG dimer) inhibit the differentiation of 3T3-L1 cells significantly, whereas epicatechin-(4β→8,2β→O→7)-epicatechin (A-type EC dimer) and epicatechin-(4β→8)-epicatechin (B-type EC dimer) showed little effect in previous work. However, the underlying mechanisms are unclear. To test whether bilayer perturbation may underlie this diversity of actions, we examined the bilayer-modifying effects of the four dimers in both 3T3-L1 cell and 1,2-dipalmitoyl-sn-glycero-3-phosphocholine liposome models by using scanning electron microscopy, fluorescent spectroscopy, differential scanning calorimetry, and molecular dynamics methods. Our results revealed that A-type ECG and EGCG dimers had a high affinity for the lipid bilayer and could form simultaneous hydrogen bonds (H-bond) with both the surface oxygen acceptors and the deeper inside lipid oxygen atoms. However, A-type and B-type EC dimers contacted only the surface oxygen atoms with limited and significantly fewer H-bonds. A-type ECG and EGCG dimers notably distorted the membrane morphology of 3T3-L1 cells. In the present study, we found there was a high positive correlation between the membrane-disturbing abilities of the four dimers and their 3T3-L1 cell differentiation inhibitory effects as previously reported. This indicated that the strong 3T3-L1 cell differentiation inhibitory effect of A-type ECG and EGCG dimers might be due to their strong bilayer-perturbing potency.
Collapse
Affiliation(s)
- Wei Zhu
- College of Food Science and Technology, Huazhong Agricultural University , Wuhan, China 430070
| | - Le Xiong
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University , Wuhan, China 430070
| | - Jinming Peng
- College of Food Science and Technology, Huazhong Agricultural University , Wuhan, China 430070
| | - Xiangyi Deng
- College of Food Science and Technology, Huazhong Agricultural University , Wuhan, China 430070
| | - Jun Gao
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University , Wuhan, China 430070
| | - Chun-Mei Li
- College of Food Science and Technology, Huazhong Agricultural University , Wuhan, China 430070
- Key Laboratory of Environment Correlative Food Science (Huazhong Agricultural University), Ministry of Education , Wuhan, China 430070
| |
Collapse
|
45
|
de Athayde Moncorvo Collado A, Dupuy FG, Morero RD, Minahk C. Cholesterol induces surface localization of polyphenols in model membranes thus enhancing vesicle stability against lysozyme, but reduces protection of distant double bonds from reactive-oxygen species. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1858:1479-87. [DOI: 10.1016/j.bbamem.2016.04.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 04/01/2016] [Accepted: 04/05/2016] [Indexed: 12/24/2022]
|
46
|
Guina T, Deiana M, Calfapietra S, Cabboi B, Maina M, Tuberoso CI, Leonarduzzi G, Gamba P, Gargiulo S, Testa G, Poli G, Biasi F. The role of p38 MAPK in the induction of intestinal inflammation by dietary oxysterols: modulation by wine phenolics. Food Funct 2016; 6:1218-28. [PMID: 25736858 DOI: 10.1039/c4fo01116c] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dietary oxysterols are cholesterol auto-oxidation products widely present in cholesterol-rich foods. They are thought to affect the intestinal barrier function, playing a role in gut inflammation. This study has characterized specific cell signals that are up-regulated in differentiated CaCo-2 colonic epithelial cells by a mixture of oxysterols representative of a hyper-cholesterolemic diet. p38 MAPK activation plays a major role, while other signal branches, i.e. the JNK and ERK pathways, make minor contributions to the intestinal inflammation induced by dietary oxysterols. p38 transduction might be the missing link connecting the known NADPH oxidase activation, and the induction of NF-κB-dependent inflammatory events related to oxysterols' action in the intestine. A NOX1/p38 MAPK/NF-κB signaling axis was demonstrated by the quenched inflammation observed on blocking individual branches of this signal with specific chemical inhibitors. Furthermore, all these signaling sites were prevented when CaCo-2 cells were pre-incubated with phenolic compounds extracted from selected wines made of typical Sardinian grape varieties: red Cannonau and white Vermentino. Notably, Cannonau was more effective than Vermentino. The effect of Sardinian wine extracts on intestinal inflammation induced by dietary oxysterols might mainly be due to their phenolic content, more abundant in Cannonau than in Vermentino. Furthermore, among different phenolic components of both wines, epicatechin and caffeic acid exerted the strongest effects. These findings show a major role of the NOX1/p38 MAPK/NF-κB signaling axis in the activation of oxysterol-dependent intestinal inflammation, and confirm the concept that phenolics act as modulators at different sites of pro-oxidant and pro-inflammatory cell signals.
Collapse
Affiliation(s)
- Tina Guina
- Dept. of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Turin, Italy.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Whitlock JM, Hartzell HC. A Pore Idea: the ion conduction pathway of TMEM16/ANO proteins is composed partly of lipid. Pflugers Arch 2016; 468:455-73. [PMID: 26739711 PMCID: PMC4751199 DOI: 10.1007/s00424-015-1777-2] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 12/14/2015] [Accepted: 12/16/2015] [Indexed: 01/04/2023]
Abstract
Since their first descriptions, ion channels have been conceived as proteinaceous conduits that facilitate the passage of ionic cargo between segregated environments. This concept is reinforced by crystallographic structures of cation channels depicting ion conductance pathways completely lined by protein. Although lipids are sometimes present in fenestrations near the pore or may be involved in channel gating, there is little or no evidence that lipids inhabit the ion conduction pathway. Indeed, the presence of lipid acyl chains in the conductance pathway would curse the design of the channel's aqueous pore. Here, we make a speculative proposal that anion channels in the TMEM16/ANO superfamily have ion conductance pathways composed partly of lipids. Our reasoning is based on the idea that TMEM16 ion channels evolved from a kind of lipid transporter that scrambles lipids between leaflets of the membrane bilayer and the modeled structural similarity between TMEM16 lipid scramblases and TMEM16 anion channels. This novel view of the TMEM16 pore offers explanation for the biophysical and pharmacological oddness of TMEM16A. We build upon the recent X-ray structure of nhTMEM16 and develop models of both TMEM16 ion channels and lipid scramblases to bolster our proposal. It is our hope that this model of the TMEM16 pore will foster innovative investigation into TMEM16 function.
Collapse
Affiliation(s)
- Jarred M Whitlock
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, 30322, USA
| | - H Criss Hartzell
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, 30322, USA.
| |
Collapse
|
48
|
Stadlbauer S, Rios P, Ohmori K, Suzuki K, Köhn M. Procyanidins Negatively Affect the Activity of the Phosphatases of Regenerating Liver. PLoS One 2015; 10:e0134336. [PMID: 26226290 PMCID: PMC4520450 DOI: 10.1371/journal.pone.0134336] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 07/08/2015] [Indexed: 01/10/2023] Open
Abstract
Natural polyphenols like oligomeric catechins (procyanidins) derived from green tea and herbal medicines are interesting compounds for pharmaceutical research due to their ability to protect against carcinogenesis in animal models. It is nevertheless still unclear how intracellular pathways are modulated by polyphenols. Monomeric polyphenols were shown to affect the activity of some protein phosphatases (PPs). The three phosphatases of regenerating liver (PRLs) are close relatives and promising therapeutic targets in cancer. In the present study we show that several procyanidins inhibit the activity of all three members of the PRL family in the low micromolar range, whereas monomeric epicatechins show weak inhibitory activity. Increasing the number of catechin units in procyanidins to more than three does not further enhance the potency. Remarkably, the tested procyanidins showed selectivity in vitro when compared to other PPs, and over 10-fold selectivity toward PRL-1 over PRL-2 and PRL-3. As PRL overexpression induces cell migration compared to control cells, the effect of procyanidins on this phenotype was studied. Treatment with procyanidin C2 led to a decrease in cell migration of PRL-1- and PRL-3-overexpressing cells, suggesting the compound-dependent inhibition of PRL-promoted cell migration. Treatment with procyanidin B3 led to selective suppression of PRL-1 overexpressing cells, thereby corroborating the selectivity toward PRL-1- over PRL-3 in vitro. Together, our results show that procyanidins negatively affect PRL activity, suggesting that PRLs could be targets in the polypharmacology of natural polyphenols. Furthermore, they are interesting candidates for the development of PRL-1 inhibitors due to their low cellular toxicity and the selectivity within the PRL family.
Collapse
Affiliation(s)
- Sven Stadlbauer
- European Molecular Biology Laboratory, Genome Biology Unit, Meyerhofstrasse 1, 69117, Heidelberg, Germany
- * E-mail: (SS); (MK)
| | - Pablo Rios
- European Molecular Biology Laboratory, Genome Biology Unit, Meyerhofstrasse 1, 69117, Heidelberg, Germany
| | - Ken Ohmori
- Tokyo Institute of Technology, Department of Chemistry, O-okayama, Meguro-ku, Tokyo, 152–8551, Japan
| | - Keisuke Suzuki
- Tokyo Institute of Technology, Department of Chemistry, O-okayama, Meguro-ku, Tokyo, 152–8551, Japan
| | - Maja Köhn
- European Molecular Biology Laboratory, Genome Biology Unit, Meyerhofstrasse 1, 69117, Heidelberg, Germany
- * E-mail: (SS); (MK)
| |
Collapse
|
49
|
Zhu W, Zou B, Nie R, Zhang Y, Li CM. A-type ECG and EGCG dimers disturb the structure of 3T3-L1 cell membrane and strongly inhibit its differentiation by targeting peroxisome proliferator-activated receptor γ with miR-27 involved mechanism. J Nutr Biochem 2015; 26:1124-35. [PMID: 26145192 DOI: 10.1016/j.jnutbio.2015.05.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 04/28/2015] [Accepted: 05/07/2015] [Indexed: 12/24/2022]
Abstract
The effects of four proanthocyanidin dimers including epicatechin-(4β→8, 2β→O→7)-epicatechin (A-type EC dimer), epicatechin-(4β→8)-epicatechin (B-type EC dimer), epicatechin-3-gallate-(4β→8, 2β→O→7)-epicatechin-3-gallate (A-type ECG dimer) and epigallocatechin-3-gallate-(4β→8, 2β→O→7)-epigallocatechin-3-gallate (A-type EGCG dimer) on 3T3-L1 preadipocyte cell differentiation and the underlying mechanisms were explored and compared. The results showed that A-type ECG dimer and A-type EGCG dimer significantly reduced the intracellular lipid accumulation in 3T3-L1 preadipocyte cells by targeting miR-27a and miR-27b as well as peroxisome proliferator-activated receptor γ (PPARγ) in the early stage of differentiation, while A-type EC dimer and B-type EC dimer showed little effect. In addition, our results revealed that the inhibitory effects of proanthocyanidin dimers on 3T3-L1 preadipocyte differentiation were highly structure-dependent and the effects were associated with the dimer-membrane interactions. The presence of galloyl moieties and A-type linkage within the structure of proanthocyanidins might be crucial for their inhibitory effect on adipogenesis. The strong disturbing effects of A-type ECG and A type EGCG dimers on the fluidity, hydrophobicity and permeability of membrane of 3T3-L1 preadipocyte cell were at least, in part, responsible for their distinct inhibitory effects on adipocyte hyperplasia.
Collapse
Affiliation(s)
- Wei Zhu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Bo Zou
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Functional Foods, Ministry of Agriculture, Guangdong Key Laboratory of Agricultural Products Processing, Sericultural & Agri-Food Research Institute Guangdong Academy of Agricultural Sciences, Guangzhou 510610, China
| | - Rongzu Nie
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Ying Zhang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - 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, China.
| |
Collapse
|
50
|
Feliciano RP, Krueger CG, Reed JD. Methods to determine effects of cranberry proanthocyanidins on extraintestinal infections: Relevance for urinary tract health. Mol Nutr Food Res 2015; 59:1292-306. [PMID: 25917127 DOI: 10.1002/mnfr.201500108] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 03/31/2015] [Accepted: 04/23/2015] [Indexed: 12/22/2022]
Abstract
Urinary tract infections (UTI) are one of the most frequent extraintestinal infections caused by Escherichia coli (ExPEC). Cranberry juice has been used for decades to alleviate symptoms and prevent recurrent UTI. The putative compounds in cranberries are proanthocyanidins (PAC), specifically PAC with "A-type" bonds. Since PAC are not absorbed, their health benefits in UTI may occur through interactions at the mucosal surface in the gastrointestinal tract. Recent research showed that higher agglutination of ExPEC and reduced bacterial invasion are correlated with higher number of "A-type" bonds and higher degree of polymerization of PAC. An understanding of PAC structure-activity relationship is becoming feasible due to advancements, not only in obtaining purified PAC fractions that allow accurate estimation, but also in high-resolution MS methodologies, specifically, MALDI-TOF MS. A recent MALDI-TOF MS deconvolution method allows quantification of the ratios of "A-type" to "B-type" bonds enabling characteristic fingerprints. Moreover, the generation of fluorescently labeled PAC allows visualization of the interaction between ExPEC and PAC with microscopy. These tools can be used to establish structure-activity relationships between PAC and UTI and give insight on the mechanism of action of these compounds in the gut without being absorbed.
Collapse
Affiliation(s)
- Rodrigo P Feliciano
- Department of Food Science, University of Wisconsin-Madison, Madison, WI, USA
- Reed Research Group, Department of Animal Sciences, University of Wisconsin-Madison, Madison, WI, USA
| | - Christian G Krueger
- Reed Research Group, Department of Animal Sciences, University of Wisconsin-Madison, Madison, WI, USA
- Complete Phytochemical Solutions LLC, Cambridge, WI, USA
| | - Jess D Reed
- Reed Research Group, Department of Animal Sciences, University of Wisconsin-Madison, Madison, WI, USA
- Complete Phytochemical Solutions LLC, Cambridge, WI, USA
| |
Collapse
|