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Domínguez-Avila JA. Dietary Phenolic Compounds Exert Some of Their Health-Promoting Bioactivities by Targeting Liver X Receptor (LXR) and Retinoid X Receptor (RXR). Foods 2023; 12:4205. [PMID: 38231664 DOI: 10.3390/foods12234205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/17/2023] [Accepted: 11/21/2023] [Indexed: 01/19/2024] Open
Abstract
Consuming foods of vegetable origin has been shown to exert multiple health-related effects, many of them attributed to their phenolic compounds. These molecules are known for being bioactive across multiple cells and organs, with documented changes in gene expression being commonly reported. Nuclear receptors are signal transducers capable of regulating gene expression in response to endogenous and/or exogenous ligands. Liver X receptor (LXR) and retinoid X receptor (RXR) are two important nuclear receptors that can be acted on by phenolic compounds, thereby modifying gene expression and potentially exerting numerous subsequent bioactivities. The present work summarizes recent evidence of the effects of the phenolic compounds that are exerted by targeting LXR and/or RXR. The data show that, when LXR is being targeted, changes in lipid metabolism are commonly observed, due to its ability to regulate genes relevant to this process. The effects vary widely when RXR is the target since it is involved in processes like cell proliferation, vitamin D metabolism, and multiple others by forming heterodimers with other transcription factors that regulate said processes. The evidence therefore shows that phenolic compounds can exert multiple bioactivities, with a mechanism of action based, at least in part, on their ability to modulate the cell at the molecular level by acting on nuclear receptors. The data point to a promising and novel area of study that links diet and health, although various unknowns justify further experimentation to reveal the precise way in which a given phenolic can interact with a nuclear receptor.
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Affiliation(s)
- J Abraham Domínguez-Avila
- CONAHCYT-Centro de Investigación en Alimentación y Desarrollo A. C., Carretera Gustavo Enrique Astiazaran Rosas No. 46, La Victoria, Hermosillo 83304, SO, Mexico
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Abruzzese V, Sukowati CHC, Tiribelli C, Matera I, Ostuni A, Bisaccia F. The Expression Level of ABCC6 Transporter in Colon Cancer Cells Correlates with the Activation of Different Intracellular Signaling Pathways. PATHOPHYSIOLOGY 2022; 29:173-186. [PMID: 35645325 PMCID: PMC9149812 DOI: 10.3390/pathophysiology29020015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 05/04/2022] [Accepted: 05/09/2022] [Indexed: 11/16/2022] Open
Abstract
The ATP-binding cassette sub-family C member 6 transporter (ABCC6) is mainly found in the basolateral plasma membrane of hepatic and kidney cells. In hepatocarcinoma HepG2 cells, ABCC6 was involved in cell migration. In the present study, we investigated the role of ABCC6 in colon cancer evaluating the effect of Quercetin and Probenecid, inhibitors of the ectonucleotidase NT5E and ABCC6, respectively, on migration rate of Caco2 and HT29 cell lines. Both drugs reduced cell migration analyzed by scratch test. Gene and protein expression were evaluated by quantitative reverse-transcription PCR (RT-qPCR) and Western blot, respectively. In Caco2 cells, in which ABCC6 is significantly expressed, the addition of ATP restored motility, suggesting the involvement of P2 receptors. Contrary to HT29 cells, where the expression of ABCC6 is negligible but remarkable to the level of NT5E, no effect of ATP addition was detected, suggesting a main role on their migration by the phosphatidylinositol 3′-kinase (PI3K)/Akt system. Therefore, in some colon cancers in which ABCC6 is overexpressed, it may have a primary role in controlling the extracellular purinergic system by feeding it with ATP, thus representing a potential target for a therapy aimed at mitigating invasiveness of those type of cancers.
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Affiliation(s)
- Vittorio Abruzzese
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (V.A.); (I.M.)
| | - Caecilia H. C. Sukowati
- Fondazione Italiana Fegato ONLUS, AREA Science Park Basovizza, 34149 Trieste, Italy; (C.H.C.S.); (C.T.)
| | - Claudio Tiribelli
- Fondazione Italiana Fegato ONLUS, AREA Science Park Basovizza, 34149 Trieste, Italy; (C.H.C.S.); (C.T.)
| | - Ilenia Matera
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (V.A.); (I.M.)
| | - Angela Ostuni
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (V.A.); (I.M.)
- Correspondence: (A.O.); (F.B.)
| | - Faustino Bisaccia
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (V.A.); (I.M.)
- Correspondence: (A.O.); (F.B.)
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Safe S, Jayaraman A, Chapkin RS, Howard M, Mohankumar K, Shrestha R. Flavonoids: structure-function and mechanisms of action and opportunities for drug development. Toxicol Res 2021; 37:147-162. [PMID: 33868973 DOI: 10.1007/s43188-020-00080-z] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 12/04/2020] [Indexed: 12/14/2022] Open
Abstract
Flavonoids are polyphenolic phytochemicals produced in fruits, nuts and vegetables and dietary consumption of these structurally diverse compounds is associated with multiple health benefits including increased lifespan, decreased cardiovascular problems and low rates of metabolic diseases. Preclinical studies with individual flavonoids demonstrate that these compounds exhibit anti-inflammatory and anticancer activities and they enhance the immune system. Their effectiveness in both chemoprevention and chemotherapy is associated with their targeting of multiple genes/pathways including nuclear receptors, the aryl hydrocarbon receptor (AhR), kinases, receptor tyrosine kinases and G protein-coupled receptors. However, despite the remarkable preclinical activities of flavonoids, their clinical applications have been limited and this is due, in part, to problems in drug delivery and poor bioavailability and these problems are being addressed. Further improvements that will expand clinical applications of flavonoids include mechanism-based precision medicine approaches which will identify critical mechanisms of action of individual flavonoids with optimal activities that can be used in combination therapies.
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Affiliation(s)
- Stephen Safe
- Department of Veterinary Physiology and Pharmacology, Texas A&M University, 4466 TAMU, College Station, TX 77843-4466 USA
| | - Arul Jayaraman
- Department of Chemical Engineering, Texas A&M University, College Station, TX 77843 USA
| | - Robert S Chapkin
- Department of Nutrition, Texas A&M University, College Station, TX 77843 USA
| | - Marcell Howard
- Department of Veterinary Physiology and Pharmacology, Texas A&M University, 4466 TAMU, College Station, TX 77843-4466 USA
| | - Kumaravel Mohankumar
- Department of Veterinary Physiology and Pharmacology, Texas A&M University, 4466 TAMU, College Station, TX 77843-4466 USA
| | - Rupesh Shrestha
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843 USA
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H M, S H, N QI, R M, A M, R S, L S S, K B, P B, H D, P N N, M M, Y N. Surface refined Au Quercetin nanoconjugate stimulates dermal cell migration: possible implication in wound healing. RSC Adv 2020; 10:37683-37694. [PMID: 35515178 PMCID: PMC9057138 DOI: 10.1039/d0ra06690g] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 09/16/2020] [Indexed: 01/13/2023] Open
Abstract
Refining nutraceutical conjugated metal nanoparticles (NPs) and understanding their interactions with the cellular micro-environment is necessary for their application in nanomedicine. In the present experiment, we studied the effect of quercetin functionalized gold nanoparticles (AuQurNP) on skin fibroblast and keratinocyte cell migration. Spherical shaped AuQurNPs of 47 nm in size were formed due to the interaction of hydroxyl and carbonyl groups of quercetin with Au atoms as revealed by incremental algorithm-based analysis. AuQurNP containing up to 5 μg l−1 of Au with quercetin (5.2 ± 1.6 ng ml−1) was least toxic to fibroblasts. AuQurNP effectively reduced the generation of intracellular ROS (up to 63%) through free-radical scavenging activity. AuQurNP also enhanced the rate of migration of fibroblasts (24 h) and keratinocytes (20 h) in artificially created wounds. The rate of migration of the cells towards the wound edge was in the order of AuQurNP > control > quercetin > AuNP. AuQurNP also significantly increased the expression of TGFβ1 protein, thereby inducing the downstream SMAD complex (SMAD 2–4). Downregulation of the inhibitory protein SMAD 7 by AuQurNP helped in the nuclear translocation of SMADs 3 and 4. Collectively, the present in vitro study demonstrates the action of AuQurNP on the SMAD family and the interconnected molecular mechanism leading to the cell migration process. AuQuercetin nano conjugates enhances cell migration via TGFβ1.![]()
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Affiliation(s)
- Madhyastha H
- Department of Applied Physiology, Faculty of Medicine, University of Miyazaki Miyazaki 889 1692 Japan
| | - Halder S
- School of Biosciences and Technology, Vellore Institute of Technology Vellore 632014 Tamilnadu India
| | - Queen Intan N
- Department of Applied Physiology, Faculty of Medicine, University of Miyazaki Miyazaki 889 1692 Japan
| | - Madhyastha R
- Department of Applied Physiology, Faculty of Medicine, University of Miyazaki Miyazaki 889 1692 Japan
| | - Mohanapriya A
- School of Biosciences and Technology, Vellore Institute of Technology Vellore 632014 Tamilnadu India
| | - Sudhakaran R
- School of Biosciences and Technology, Vellore Institute of Technology Vellore 632014 Tamilnadu India
| | - Sajitha L S
- School of Biosciences and Technology, Vellore Institute of Technology Vellore 632014 Tamilnadu India
| | - Banerjee K
- School of Biosciences and Technology, Vellore Institute of Technology Vellore 632014 Tamilnadu India
| | - Bethasiwi P
- Department of Applied Physiology, Faculty of Medicine, University of Miyazaki Miyazaki 889 1692 Japan
| | - Daima H
- Amity Center for Nanobiotechnology and Nanomedicine, Amity Institute of Biotechnology, Amity University Rajasthan Jaipur 303002 Rajasthan India
| | - Navya P N
- Department of Biotechnology, Bannari Amman Institute of Technology Sathyamangalam Erode 638401 Tamilnadu India
| | - Maruyama M
- Department of Applied Physiology, Faculty of Medicine, University of Miyazaki Miyazaki 889 1692 Japan
| | - Nakajima Y
- Department of Applied Physiology, Faculty of Medicine, University of Miyazaki Miyazaki 889 1692 Japan
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Gene expression signature induced by grape intake in healthy subjects reveals wide-spread beneficial effects on peripheral blood mononuclear cells. J Funct Foods 2020. [DOI: 10.1016/j.jff.2019.103705] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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Kerimi A, Williamson G. Differential Impact of Flavonoids on Redox Modulation, Bioenergetics, and Cell Signaling in Normal and Tumor Cells: A Comprehensive Review. Antioxid Redox Signal 2018; 29:1633-1659. [PMID: 28826224 PMCID: PMC6207159 DOI: 10.1089/ars.2017.7086] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
SIGNIFICANCE Flavonoids can interact with multiple molecular targets to elicit their cellular effects, leading to changes in signal transduction, gene expression, and/or metabolism, which can, subsequently, affect the entire cell and organism. Immortalized cell lines, derived from tumors, are routinely employed as a surrogate for mechanistic studies, with the results extrapolated to tissues in vivo. Recent Advances: We review the activities of selected flavonoids on cultured tumor cells derived from various tissues in comparison to corresponding primary cells or tissues in vivo, mainly using quercetin and flavanols (epicatechin and (-)-epigallocatechin gallate) as exemplars. Several studies have indicated that flavonoids could retard cancer progression in vivo in animal models as well as in tumor cell models. CRITICAL ISSUES Extrapolation from in vitro and animal models to humans is not straightforward given both the extensive conjugation and complex microbiota-dependent metabolism of flavonoids after consumption, as well as the heterogeneous metabolism of different tumors. FUTURE DIRECTIONS Comparison of data from studies on primary cells or in vivo are essential not only to validate results obtained from cultured cell models, but also to highlight whether any differences may be further exploited in the clinical setting for chemoprevention. Tumor cell models can provide a useful mechanistic tool to study the effects of flavonoids, provided that the limitations of each model are understood and taken into account in interpretation of the data.
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Affiliation(s)
- Asimina Kerimi
- School of Food Science and Nutrition, University of Leeds , Leeds, United Kingdom
| | - Gary Williamson
- School of Food Science and Nutrition, University of Leeds , Leeds, United Kingdom
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Uylaş MU, Şahin A, Şahintürk V, Alataş İÖ. Quercetin dose affects the fate of hepatic ischemia and reperfusion injury in rats: An experimental research. Int J Surg 2018; 53:117-121. [PMID: 29578092 DOI: 10.1016/j.ijsu.2018.03.043] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 01/25/2018] [Accepted: 03/14/2018] [Indexed: 11/30/2022]
Abstract
BACKGROUND Quercetin found in fruits and vegetables has an antioxidative effect. We aimed to investigate the protective effects of quercetin according to different doses on hepatic and ischemia-reperfusion (I/R) injury. METHODS Fifty mature male Sprague-Dawley rats were randomly divided into five groups (n = 10 for each). All the animal groups underwent laparotomy. Group 1 rats served as a sham-operated group. Groups 2-5 underwent 1 h hepatic ischemia and were followed by 2 h reperfusion. Group 3-5 animals received an additional intraperitoneal dose of 25, 50 or 100 mg/kg quercetin respectively before I/R operation. Blood samples were collected for determining serum aspartate transaminase (AST), alanine transaminase (ALT) and malondialdehyde (MDA) levels. Also, liver tissue samples were taken for measuring of liver MDA concentration and for histopathology assessment. RESULTS The highest levels of biochemical parameters were observed in group 2. In quercetin-treated groups, serum AST, ALT, MDA levels, and tissue MDA concentration were decreased as inversely with increasing quercetin dose. Microscopic evaluation revealed that most conspicuous histological improvement was observed in 50 mg/kg quercetin co-treated rats. 25 and 100 mg/kg quercetin co-treatment could not protect completely against hepatic I/R injury. CONCLUSION Quercetin can be effective in preventing of hepatic I/R injury when the correct dose was used.
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Affiliation(s)
- Mustafa Ufuk Uylaş
- Department of General Surgery, Turgut Ozal Medical Center, Inonu University, Malatya, Turkey.
| | - Adnan Şahin
- Department of General Surgery, Eskisehir Osmangazi University, Eskisehir, Turkey.
| | - Varol Şahintürk
- Department of Histology and Embryology, Eskisehir Osmangazi University, Eskisehir, Turkey.
| | - İbrahim Özkan Alataş
- Department of Medical Biochemistry, Eskisehir Osmangazi University, Eskisehir, Turkey.
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Phytochemical study and evaluation of cytotoxicity, mutagenicity, cell cycle kinetics and gene expression of Bauhinia holophylla (Bong.) Steud. in HepG2 cells in vitro. Cytotechnology 2017; 70:713-728. [PMID: 29230630 DOI: 10.1007/s10616-017-0173-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 11/21/2017] [Indexed: 12/11/2022] Open
Abstract
Bauhinia holophylla (Bong.) Steud. (Fabaceae) is a plant used in Brazilian folk medicine to treat diabetes and inflammation. This study evaluated the phytochemical properties, cytotoxic, apoptotic, mutagenic/antimutagenic effects and alterations in gene expression (RNAm) in HepG2 cells treated with the B. holophylla extract. The phytochemical profile highlight the presence of flavonoids isorhamentin and quercetin derivates. The MTT assay was used to evaluate the cytotoxicity of different concentrations for different treatment times. Three concentrations (7.5, 15, 30 µg/mL) were chosen for assessment of apoptosis (AO/EB), mutagenicity (micronucleus), and cell cycle kinetics (flow cytometry). Thereafter, the concentration of 7.5 µg/mL was chosen to evaluate the protective effects against DNA damage induced by benzo[a]pyrene (B[a]P). At concentrations higher than 7.5 µg/mL (between 10 and 50 µg/mL), the extract was cytotoxic, induced apoptosis, and caused antiproliferative effects. However, it did not induce micronucleus and a reduction of apoptotic and micronucleated cells was observed in treatments that included the extract and B[a]P. The protective effect is attributable to the presence of flavonoids, described as antioxidants, inhibitors of DNA adduct and activators of detoxifying enzymes. The results of the present study such as absence of cytotoxic and mutagenic effects and protective effects against known carcinogens suggest that B. holophylla has potential for use soon as herbal medicine.
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