1
|
Tripathi DK, Nagar N, Kumar V, Joshi N, Roy P, Poluri KM. Gallate Moiety of Catechin Is Essential for Inhibiting CCL2 Chemokine-Mediated Monocyte Recruitment. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:4990-5005. [PMID: 36942659 DOI: 10.1021/acs.jafc.3c01283] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Leukocyte recruitment witnesses an orchestrated complex formation between the chemokines and their molecular partners. CCL2 chemokine that regulates monocyte trafficking is a worthwhile system from the pharmaceutical perspective. In the current study, four major catechins (EC/EGC/ECG/EGCG) were assessed for their inhibitory potential against CCL2-regulated monocyte/macrophage recruitment. Interestingly, catechins with the gallate moiety (ECG/EGCG) could only attenuate the CCL2-induced macrophage migration. These molecules specifically bound to CCL2 on a pocket comprising the N-terminal, β0-sheets, and β3-sheets, and the binding affinity of ECGC (Kd = 22 ± 4 μM) is ∼4 times higher than that of the ECG complex (Kd = 85 ± 6 μM). MD simulation analysis evidenced that the molecular specificity/stability of CCL2-catechin complexes is regulated by multiple factors, including stereospecificity, number of hydroxyl groups on the annular ring-B, the positioning of the carbonyl group, and the methylation of the galloyl ring. Further, a significant overlap on the binding surface of CCL2 for EGCG/ECG and receptor interactions as evidenced from NMR data provided the rationale for the observed inhibition of macrophage migration in response to EGCG/ECG binding. In summary, these galloylated epicatechins can be considered as potent protein-protein interaction (PPI) inhibitors that regulate CCL2-directed leukocyte recruitment for resolving inflammatory/immunomodulatory disorders.
Collapse
Affiliation(s)
- Deepak Kumar Tripathi
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Nupur Nagar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Viney Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Nidhi Joshi
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Partha Roy
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Krishna Mohan Poluri
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
- Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| |
Collapse
|
2
|
Moya-García AA, Pino-Ángeles A, Sánchez-Jiménez F, Urdiales JL, Medina MÁ. Histamine, Metabolic Remodelling and Angiogenesis: A Systems Level Approach. Biomolecules 2021; 11:biom11030415. [PMID: 33799732 PMCID: PMC8000605 DOI: 10.3390/biom11030415] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 03/05/2021] [Accepted: 03/08/2021] [Indexed: 12/11/2022] Open
Abstract
Histamine is a highly pleiotropic biogenic amine involved in key physiological processes including neurotransmission, immune response, nutrition, and cell growth and differentiation. Its effects, sometimes contradictory, are mediated by at least four different G-protein coupled receptors, which expression and signalling pathways are tissue-specific. Histamine metabolism conforms a very complex network that connect many metabolic processes important for homeostasis, including nitrogen and energy metabolism. This review brings together and analyses the current information on the relationships of the "histamine system" with other important metabolic modules in human physiology, aiming to bridge current information gaps. In this regard, the molecular characterization of the role of histamine in the modulation of angiogenesis-mediated processes, such as cancer, makes a promising research field for future biomedical advances.
Collapse
Affiliation(s)
- Aurelio A. Moya-García
- Departamento de Biología Molecular y Bioquímica, Universidad de Málaga, 29071 Málaga, Spain; (A.A.M.-G.); (M.Á.M.)
- Instituto de Investigación Biomédica de Málaga (IBIMA), 29010 Málaga, Spain
| | - Almudena Pino-Ángeles
- Unidad de Lípidos y Arteriosclerosis, Servicio de Medicina Interna, Hospital Universitario Reina Sofia, Instituto Maimonides de Investigación Biomédica de Córdoba (IMIBIC), Universidad de Córdoba, 14004 Córdoba, Spain;
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III, 14004 Córdoba, Spain
| | - Francisca Sánchez-Jiménez
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, 29010 Málaga, Spain;
| | - José Luis Urdiales
- Departamento de Biología Molecular y Bioquímica, Universidad de Málaga, 29071 Málaga, Spain; (A.A.M.-G.); (M.Á.M.)
- Instituto de Investigación Biomédica de Málaga (IBIMA), 29010 Málaga, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, 29010 Málaga, Spain;
- Correspondence: ; Tel.: +34-9521-37285
| | - Miguel Ángel Medina
- Departamento de Biología Molecular y Bioquímica, Universidad de Málaga, 29071 Málaga, Spain; (A.A.M.-G.); (M.Á.M.)
- Instituto de Investigación Biomédica de Málaga (IBIMA), 29010 Málaga, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, 29010 Málaga, Spain;
| |
Collapse
|
3
|
Badger-Emeka LI, Emeka PM, Thirugnanasambantham K, Ibrahim HIM. Anti-Allergic Potential of Cinnamaldehyde via the Inhibitory Effect of Histidine Decarboxylase (HDC) Producing Klebsiella pneumonia. Molecules 2020; 25:molecules25235580. [PMID: 33261109 PMCID: PMC7730296 DOI: 10.3390/molecules25235580] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 11/25/2020] [Accepted: 11/26/2020] [Indexed: 11/16/2022] Open
Abstract
Allergy is an immunological disorder that develops in response to exposure to an allergen, and histamines mediate these effects via histidine decarboxylase (HDC) activity at the intracellular level. In the present study, we developed a 3D model of Klebsiella pneumoniae histidine decarboxylase (HDC) and analyzed the HDC inhibitory potential of cinnamaldehyde (CA) and subsequent anti-allergic potential using a bacterial and mammalian mast cell model. A computational and in vitro study using K. pneumonia revealed that CA binds to HDC nearby the pyridoxal-5'-phosphate (PLP) binding site and inhibited histamine synthesis in a bacterial model. Further study using a mammalian mast cell model also showed that CA decreased the levels of histamine in the stimulated RBL-2H3 cell line and attenuated the release of β-hexoseaminidase and cell degranulation. In addition, CA treatment also significantly suppressed the levels of pro-inflammatory cytokines TNF-α and IL-6 and the nitric oxide (NO) level in the stimulated mast cells. A gene expression and Western blotting study revealed that CA significantly downregulated the expressions of MAPKp38/ERK and its downstream pro-allergic mediators that are involved in the signaling pathway in mast cell cytokine synthesis. This study further confirms that CA has the potential to attenuate mast cell activation by inhibiting HDC and modifying the process of allergic disorders.
Collapse
Affiliation(s)
- Lorina I. Badger-Emeka
- Department of Biomedical Sciences, College of Medicine, King Faisal University, Al-Ahsa 31982, Saudi Arabia
- Correspondence: ; Tel.: +966-(0)5-3654-2793
| | - Promise Madu Emeka
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa 31982, Saudi Arabia;
| | | | - Hairul Islam M. Ibrahim
- Department of Biological Sciences, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia;
| |
Collapse
|
4
|
Van Buiten CB, Yennawar NH, Pacheco CN, Hatzakis E, Elias RJ. Physicochemical interactions with (-)-epigallocatechin-3-gallate drive structural modification of celiac-associated peptide α 2-gliadin (57-89) at physiological conditions. Food Funct 2019; 10:2997-3007. [PMID: 31086895 DOI: 10.1039/c9fo00553f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
(-)-Epigallocatechin-3-gallate (EGCG), a major phenolic constituent of tea, has been shown to have biological activity within inflammatory pathways involved with food allergies and intolerances. Proposed mechanisms for this effect include sequestration and structural modification of immunostimulatory proteins as a result of interactions with EGCG. The present study employs biophysical techniques including dynamic light scattering, circular dichroism and nuclear magnetic resonance to elucidate the likely mechanism(s) by which EGCG interacts with α2-gliadin (57-89) (α2g), an immunodominant peptide in celiac disease pathogenesis. We demonstrate that EGCG interacts with α2g in a multi-phase reaction driven by non-specific binding, resulting in the formation of polydisperse EGCG/α2g complexes which induce changes in peptide structure. We also show that these interactions occur at a range of pH levels associated with digestion, including pH 2.0, 6.8 and 7.5. Based on previous reports of binding specificity of enzymes and antigen presenting cells in celiac disease pathogenesis, our results provide foundational support for EGCG to prevent recognition of immunostimulatory gliadin epitopes by the body and thus prevent the inflammatory and autoimmune response associated with celiac disease.
Collapse
Affiliation(s)
- Charlene B Van Buiten
- Department of Food Science, The Pennsylvania State University, University Park, PA, USA.
| | | | | | | | | |
Collapse
|
5
|
FcεRI-HDAC3-MCP1 Signaling Axis Promotes Passive Anaphylaxis Mediated by Cellular Interactions. Int J Mol Sci 2019; 20:ijms20194964. [PMID: 31597362 PMCID: PMC6801807 DOI: 10.3390/ijms20194964] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 10/04/2019] [Accepted: 10/05/2019] [Indexed: 12/20/2022] Open
Abstract
Anaphylaxis is an acute and life-threatening systemic reaction. Food, drug, aero-allergen and insect sting are known to induce anaphylaxis. Mast cells and basophils are known to mediate Immunoglobulin E (IgE)-dependent anaphylaxis, while macrophages, neutrophils and basophils mediate non IgE-dependent anaphylaxis. Histone deacetylases (HDACs) play various roles in biological processes by deacetylating histones and non-histones proteins. HDAC inhibitors can increase the acetylation of target proteins and affect various inflammatory diseases such as cancers and allergic diseases. HDAC3, a class I HDAC, is known to act as epigenetic and transcriptional regulators. It has been shown that HDAC3 can interact with the high-affinity Immunoglobulin E receptor (FcεRI), to mediate passive anaphylaxis and cellular interactions during passive anaphylaxis. Effects of HDAC3 on anaphylaxis, cellular interactions involving mast cells and macrophages during anaphylaxis, and any tumorigenic potential of cancer cells enhanced by mast cells will be discussed in this review. Roles of microRNAs that form negative feedback loops with hallmarks of anaphylaxis such as HDAC3 in anaphylaxis and cellular interactions will also be discussed. The roles of MCP1 regulated by HDAC3 in cellular interactions during anaphylaxis are discussed. Roles of exosomes in cellular interactions mediated by HDAC3 during anaphylaxis are also discussed. Thus, review might provide clues for development of drugs targeting passive anaphylaxis.
Collapse
|
6
|
Ud-Din S, Foden P, Mazhari M, Al-Habba S, Baguneid M, Bulfone-Paus S, McGeorge D, Bayat A. A Double-Blind, Randomized Trial Shows the Role of Zonal Priming and Direct Topical Application of Epigallocatechin-3-Gallate in the Modulation of Cutaneous Scarring in Human Skin. J Invest Dermatol 2019; 139:1680-1690.e16. [DOI: 10.1016/j.jid.2019.01.030] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 01/13/2019] [Accepted: 01/14/2019] [Indexed: 01/19/2023]
|
7
|
Abstract
Flavonoids are tricyclic polyphenolic compounds naturally occurring in plants. Being nature’s antioxidants flavonoids have been shown to reduce the damages induced by oxidative stress in cells. Besides being an antioxidant, flavonols are demonstrated to have anti-infective properties, i.e., antiviral, antifungal, anti-angiogenic, anti-tumorigenic, and immunomodulatory bioproperties. Plants use them as one of their defense mechanisms against radiation-induced DNA damage and also for fungal infections. The use of flavonols for fabrication of new drugs has been underway with objectives to develop safer and effective therapeutic agents. This review covers 15 flavonols for their structure, biological properties, role in plant metabolisms, and current research focused on computational drug design using flavonols for searching drug leads.
Collapse
|
8
|
Fisetin inhibits IL-31 production in stimulated human mast cells: Possibilities of fisetin being exploited to treat histamine-independent pruritus. Life Sci 2018; 201:121-129. [DOI: 10.1016/j.lfs.2018.03.056] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 03/09/2018] [Accepted: 03/27/2018] [Indexed: 11/19/2022]
|
9
|
Cimpean AM, Tamma R, Ruggieri S, Nico B, Toma A, Ribatti D. Mast cells in breast cancer angiogenesis. Crit Rev Oncol Hematol 2017; 115:23-26. [PMID: 28602166 DOI: 10.1016/j.critrevonc.2017.04.009] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 04/26/2017] [Accepted: 04/26/2017] [Indexed: 02/06/2023] Open
Abstract
Mast cells, accumulate in the stroma surrounding certain tumors and take part to the inflammatory reaction occurring at the periphery of the tumor. Mast cell-secreted angiogenic cytokines facilitate tumor vascularization not only by a direct effect but also by stimulating other inflammatory cells of the tumor microenvironment to release other angiogenic mediators. An increased number of mast cells have been demonstrated in angiogenesis associated with solid tumors, including breast cancer. Mast cells might act as a new target for the adjuvant treatment of breast cancer through the selective inhibition of angiogenesis, tissue remodeling and tumor promoting molecules, allowing the secretion of cytotoxic cytokines and preventing mast cell mediated immune-suppression.
Collapse
Affiliation(s)
- Anca Maria Cimpean
- Department of Microscopic Morphology/Histology, Angiogenesis Research Center, Victor Babeș University of Medicine and Pharmacy, Timișoara, Romania
| | - Roberto Tamma
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari Medical School, Bari, Italy,; National Cancer Institute "Giovanni Paolo II", Bari, Italy
| | - Simona Ruggieri
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari Medical School, Bari, Italy
| | - Beatrice Nico
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari Medical School, Bari, Italy
| | - Alina Toma
- Department of Microscopic Morphology/Histology, Angiogenesis Research Center, Victor Babeș University of Medicine and Pharmacy, Timișoara, Romania
| | - Domenico Ribatti
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari Medical School, Bari, Italy,; National Cancer Institute "Giovanni Paolo II", Bari, Italy.
| |
Collapse
|
10
|
García-Vilas JA, Quesada AR, Medina MÁ. Screening of synergistic interactions of epigallocatechin-3-gallate with antiangiogenic and antitumor compounds. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.synres.2016.05.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
11
|
Martínez-Poveda B, García-Vilas JA, Cárdenas C, Melgarejo E, Quesada AR, Medina MA. The brominated compound aeroplysinin-1 inhibits proliferation and the expression of key pro- inflammatory molecules in human endothelial and monocyte cells. PLoS One 2013; 8:e55203. [PMID: 23383109 PMCID: PMC3557235 DOI: 10.1371/journal.pone.0055203] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Accepted: 12/19/2012] [Indexed: 01/07/2023] Open
Abstract
Aeroplysinin-1 is a brominated antibiotic used by some sponges for defense against bacterial pathogen invasion. Aeroplysinin-1 has a wide spectrum of anti-tumoral action and behaves as a potent anti-angiogenic compound for bovine aortic endothelial cells. In this study, we demonstrate anti-angiogenic effects of aeroplysinin-1 on human endothelial cells. Furthermore, the response of angiogenesis related genes to aeroplysinin-1 treatment was studied in human endothelial cells by using gene arrays. The major changes were observed in thrombospondin 1 (TSP-1) and monocyte chemoattractant protein-1 (MCP-1), both of which were down-regulated. These inhibitory effects of aeroplysinin-1 were confirmed by using independent experimental approaches. To have a deeper insight on the anti-inflammatory effects of aeroplysinin-1 in endothelial cells, cytokine arrays were also used. This experimental approach confirmed effects on MCP-1 and TSP-1 and showed down-regulation of several other cytokines. Western blotting experiments confirmed down-regulation of ELTD1 (EGF, latrophilin and seven transmembrane domain-containing protein 1), interleukin 1α and matrix metalloproteinase 1 (MMP-1). These results along with our observation of a dramatic inhibitory effect of aeroplysinin-1 on cyclooxygenase-2 protein expression levels in endothelial cells and a human monocyte cell line suggest that aeroplysinin-1 could be a novel anti-inflammatory compound with potential pharmacological interest.
Collapse
Affiliation(s)
- Beatriz Martínez-Poveda
- Department of Molecular Biology and Biochemistry, Faculty of Sciences, University of Málaga, Málaga, Spain
| | - Javier A. García-Vilas
- Department of Molecular Biology and Biochemistry, Faculty of Sciences, University of Málaga, Málaga, Spain
| | - Casimiro Cárdenas
- Department of Molecular Biology and Biochemistry, Faculty of Sciences, University of Málaga, Málaga, Spain
| | - Esther Melgarejo
- Department of Molecular Biology and Biochemistry, Faculty of Sciences, University of Málaga, Málaga, Spain
| | - Ana R. Quesada
- Department of Molecular Biology and Biochemistry, Faculty of Sciences, University of Málaga, Málaga, Spain
- CIBER de Enfermedades Raras (CIBERER), Málaga, Spain
| | - Miguel A. Medina
- Department of Molecular Biology and Biochemistry, Faculty of Sciences, University of Málaga, Málaga, Spain
- CIBER de Enfermedades Raras (CIBERER), Málaga, Spain
- * E-mail:
| |
Collapse
|
12
|
Kim Y, Kim K, Park D, Lee E, Lee H, Lee YS, Choe J, Jeoung D. Histone deacetylase 3 mediates allergic skin inflammation by regulating expression of MCP1 protein. J Biol Chem 2012; 287:25844-59. [PMID: 22679019 DOI: 10.1074/jbc.m112.348284] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
We have shown the induction of histone deacetylase 3 (HDAC3) in antigen-stimulated rat basophilic leukemia cells via NF-κB. We investigated the role of HDAC3 in allergic skin inflammation. We used a BALB/c mouse model of triphasic cutaneous anaphylaxis (triphasic cutaneous reaction; TpCR) and passive cutaneous anaphylaxis (PCA) to examine the role of HDAC3 in allergic skin inflammation. Triphasic cutaneous reaction involved induction of HDAC3 and was mediated by HDAC3. HDAC3 showed an interaction with FcεRIβ. Trichostatin A (TSA), an inhibitor of HDAC(s), disrupted this interaction. Cytokine array analysis showed that the down-regulation of HDAC3 led to the decreased secretion of monocyte chemoattractant protein 1 (MCP1). FcεRI was necessary for induction of HDAC3 and MCP1. ChIP assays showed that HDAC3, in association with Sp1 and c-Jun, was responsible for induction of MCP1 expression. TSA exerted a negative effect on induction of MCP1. HDAC3 exerted a negative regulation on expression of HDAC2 via interaction with Rac1. The down-regulation of HDAC3 or inactivation of Rac1 induced binding of HDAC2 to MCP1 promoter sequences. TSA exerted a negative effect on HDAC3-mediated TpCR. The BALB/c mouse model of PCA involved induction of HDAC3 and MCP1. HDAC3 and MCP1 were necessary for PCA that involved ear swelling, enhanced vascular permeability, and angiogenesis. Recombinant MCP1 enhanced β-hexosaminidase activity and histamine release and also showed angiogenic potential. TSA exerted a negative effect on PCA. Our data show HDAC3 as a valuable target for the development of allergic skin inflammation therapeutics.
Collapse
Affiliation(s)
- Youngmi Kim
- Department of Biochemistry, Kangwon National University, Chunchon 200-701, Korea
| | | | | | | | | | | | | | | |
Collapse
|
13
|
Abstract
OBJECTIVE To study the efficacy of topical epigallocatechin gallate (EGCG) for the treatment of dry eye disease (DED). METHODS Seven- to 8-week-old female C57BL/6 mice were housed in the controlled environment chamber to induce DED. Topical 0.01% or 0.1% EGCG, or vehicle, was applied to the eyes of DED mice. Corneal fluorescein staining and the number of corneal CD11b+ cells were assessed in the different groups. Expression of interleukin-1β, tumor necrosis factor-α, chemokine ligand 2, and vascular endothelial growth factor (VEGF)-A/C/D was evaluated by real-time polymerase chain reaction in the corneas at day 9. Corneas were stained for lymphatic vessel endothelial hyaluronan receptor (LYVE)-1 to evaluate lymphangiogenesis, and the terminal transferase dUTP nick end labeling (TUNEL) assay was used to evaluate apoptosis of corneal epithelial cells. RESULTS Treatment with 0.1% EGCG showed a significant decrease in corneal fluorescein staining compared with the vehicle (24.6%, P = 0.001) and untreated controls (41.9%, P < 0.001). A significant decrease in the number of CD11b+ cells was observed in 0.1% EGCG-treated eyes, compared with the vehicle in the peripheral (23.3%, P = 0.001) and central (26.1%, P = 0.009) corneas. Treatment with 0.1% EGCG was associated with a significant decrease in the corneal expression of interleukin-1β (P = 0.029) and chemokine ligand 2 (P = 0.001) compared with the vehicle and in VEGF-A and VEGF-D levels compared with the untreated group (P = 0.007 and P = 0.048, respectively). EGCG 0.01% also showed a decrease in inflammation at the molecular level but no significant changes in the clinical signs of DED. No cellular toxicity to the corneal epithelium was observed with 0.01% or 0.1% EGCG. CONCLUSIONS Topical EGCG treatment is able to reduce the clinical signs and inflammatory changes in DED by suppressing the inflammatory cytokine expression and infiltration of CD11b+ cells in the cornea.
Collapse
|
14
|
Ruiz-Pérez MV, Pino-Ángeles A, Medina MA, Sánchez-Jiménez F, Moya-García AA. Structural Perspective on the Direct Inhibition Mechanism of EGCG on Mammalian Histidine Decarboxylase and DOPA Decarboxylase. J Chem Inf Model 2011; 52:113-9. [DOI: 10.1021/ci200221z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. Victoria Ruiz-Pérez
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain and CIBER de Enfermedades Raras (CIBERER), Valencia, Spain
| | - Almudena Pino-Ángeles
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain and CIBER de Enfermedades Raras (CIBERER), Valencia, Spain
| | - Miguel A. Medina
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain and CIBER de Enfermedades Raras (CIBERER), Valencia, Spain
| | - Francisca Sánchez-Jiménez
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain and CIBER de Enfermedades Raras (CIBERER), Valencia, Spain
| | - Aurelio A. Moya-García
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain and CIBER de Enfermedades Raras (CIBERER), Valencia, Spain
| |
Collapse
|
15
|
González R, Ballester I, López-Posadas R, Suárez MD, Zarzuelo A, Martínez-Augustin O, Sánchez de Medina F. Effects of flavonoids and other polyphenols on inflammation. Crit Rev Food Sci Nutr 2011; 51:331-62. [PMID: 21432698 DOI: 10.1080/10408390903584094] [Citation(s) in RCA: 345] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Flavonoids are a family of polyphenolic compounds which are widespread in nature (vegetables) and are consumed as part of the human diet in significant amounts. There are other types of polyphenols, including, for example, tannins and resveratrol. Flavonoids and related polyphenolic compounds have significant antiinflammatory activity, among others. This short review summarizes the current knowledge on the effects of flavonoids and related polyphenolic compounds on inflammation, with a focus on structural requirements, the mechanisms involved, and pharmacokinetic considerations. Different molecular (cyclooxygenase, lipoxygenase) and cellular targets (macrophages, lymphocytes, epithelial cells, endothelium) have been identified. In addition, many flavonoids display significant antioxidant/radical scavenging properties. There is substantial structural variation in these compounds, which is bound to have an impact on their biological profile, and specifically on their effects on inflammatory conditions. However, in general terms there is substantial consistency in the effects of these compounds despite considerable structural variations. The mechanisms have been studied mainly in myeloid cells, where the predominant effect is an inhibition of NF-κB signaling and the downregulation of the expression of proinflammatory markers. At present there is a gap in knowledge of in vitro and in vivo effects, although the pharmacokinetics of flavonoids has advanced considerably in the last decade. Many flavonoids have been studied for their intestinal antiinflammatory activity which is only logical, since the gastrointestinal tract is naturally exposed to them. However, their potential therapeutic application in inflammation is not restricted to this organ and extends to other sites and conditions, including arthritis, asthma, encephalomyelitis, and atherosclerosis, among others.
Collapse
Affiliation(s)
- R González
- Department of Pharmacology, CIBERehd, School of Pharmacy, University of Granada, Granada, Spain
| | | | | | | | | | | | | |
Collapse
|
16
|
Melgarejo E, Medina MA, Sánchez-Jiménez F, Urdiales JL. Targeting of histamine producing cells by EGCG: a green dart against inflammation? J Physiol Biochem 2010; 66:265-70. [PMID: 20652470 DOI: 10.1007/s13105-010-0033-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2010] [Accepted: 06/30/2010] [Indexed: 12/13/2022]
Abstract
The human body is made of some 250 different cell types. From them, only a small subset of cell types is able to produce histamine. They include some neurons, enterochromaffin-like cells, gastrin-containing cells, mast cells, basophils, and monocytes/macrophages, among others. In spite of the reduced number of these histamine-producing cell types, they are involved in very different physiological processes. Their deregulation is related with many highly prevalent, as well as emergent and rare diseases, mainly those described as inflammation-dependent pathologies, including mastocytosis, basophilic leukemia, gastric ulcer, Crohn disease, and other inflammatory bowel diseases. Furthermore, oncogenic transformation switches some non-histamine-producing cells to a histamine producing phenotype. This is the case of melanoma, small cell lung carcinoma, and several types of neuroendocrine tumors. The bioactive compound epigallocatechin-3-gallate (EGCG), a major component of green tea, has been shown to target histamine-producing cells producing great alterations in their behavior, with relevant effects on their proliferative potential, as well as their adhesion, migration, and invasion potentials. In fact, EGCG has been shown to have potent anti-inflammatory, anti-tumoral, and anti-angiogenic effects and to be a potent inhibitor of the histamine-producing enzyme, histidine decarboxylase. Herein, we review the many specific effects of EGCG on concrete molecular targets of histamine-producing cells and discuss the relevance of these data to support the potential therapeutic interest of this compound to treat inflammation-dependent diseases.
Collapse
Affiliation(s)
- Esther Melgarejo
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga and CIBER de Enfermedades Raras (CIBERER), Málaga, Spain
| | | | | | | |
Collapse
|
17
|
Melgarejo E, Medina MA, Sánchez-Jiménez F, Urdiales JL. Epigallocatechin gallate reduces human monocyte mobility and adhesion in vitro. Br J Pharmacol 2010; 158:1705-12. [PMID: 19912233 DOI: 10.1111/j.1476-5381.2009.00452.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND AND PURPOSE Monocytes/macrophages are an important population of immune inflammatory cells that have diverse effector functions in which their mobility and adhesion play a very relevant role. Epigallocatechin gallate (EGCG), a major component of green tea, has been reported to have anti-allergic and anti-inflammatory activities, but its effects on monocytes remain to be determined. Here we investigated the effects of EGCG on the migration and adhesion of monocytes. EXPERIMENTAL APPROACH We used a human monocyte cell line (THP-1) to analyse the effects of treatment with EGCG under non-cytotoxic conditions on the expression levels of the monocyte chemotactic protein-1 (MCP-1) and of the MCP-1 receptor (CCR2) and on the activation of beta1 integrin. A functional validation was carried out by evaluating the inhibitory effect of EGCG on monocyte adhesiveness and migration in vitro. KEY RESULTS Treatment of THP-1 cells with EGCG decreased MCP-1 and CCR2 gene expression, together with MCP-1 secretion and CCR2 expression at the cell surface. EGCG also inhibited beta1 integrin activation. The effects on these molecular targets were in agreement with the EGCG-induced inhibition of THP-1 migration in response to MCP-1 and adhesion to fibronectin. CONCLUSIONS AND IMPLICATIONS Under our experimental conditions, EGCG treatment inhibited the migration and adhesion of monocytes. These inhibitory effects of EGCG on monocyte function should be considered as a promising new anti-inflammatory response with a potential therapeutic role in the treatment of inflammation-dependent diseases.
Collapse
Affiliation(s)
- Esther Melgarejo
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, and CIBER de Enfermedades Raras (CIBERER), Málaga, Spain
| | | | | | | |
Collapse
|
18
|
Melgarejo E, Urdiales JL, Sánchez-Jiménez F, Medina MÁ. Targeting polyamines and biogenic amines by green tea epigallocatechin-3-gallate. Amino Acids 2009; 38:519-23. [DOI: 10.1007/s00726-009-0411-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2009] [Accepted: 09/06/2009] [Indexed: 12/27/2022]
|
19
|
Nagai K, Takahashi Y, Mikami I, Fukusima T, Oike H, Kobori M. The hydroxyflavone, fisetin, suppresses mast cell activation induced by interaction with activated T cell membranes. Br J Pharmacol 2009; 158:907-19. [PMID: 19702784 DOI: 10.1111/j.1476-5381.2009.00365.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND AND PURPOSE Cell-to-cell interactions between mast cells and activated T cells are increasingly recognized as a possible mechanism in the aetiology of allergic or non-allergic inflammatory disorders. To determine the anti-allergic effect of fisetin, we examined the ability of fisetin to suppress activation of the human mast cell line, HMC-1, induced by activated Jurkat T cell membranes. EXPERIMENTAL APPROACH HMC-1 cells were incubated with or without fisetin for 15 min and then co-cultured with Jurkat T cell membranes activated by phorbol-12-myristate 13-acetate for 16 h. We determined gene expression in activated HMC-1 cells by DNA microarray and quantitative reverse transcription (RT)-PCR analysis. We also examined activation of the transcription factor NF-kappaB and MAP kinases (MAPKs) in activated HMC-1 cells. KEY RESULTS Fisetin suppresses cell spreading and gene expression in HMC-1 cells stimulated by activated T cell membranes. Additionally, we show that these stimulated HMC-1 cells expressed granzyme B. The stimulatory interaction also induced activation of NF-kappaB and MAPKs; these activations were suppressed by fisetin. Fisetin also reduced the amount of cell surface antigen CD40 and intercellular adhesion molecule-1 (ICAM-1) on activated HMC-1 cells. CONCLUSIONS AND IMPLICATIONS Fisetin suppressed activation of HMC-1 cells by activated T cell membranes by interfering with cell-to-cell interaction and inhibiting the activity of NF-kappaB and MAPKs and thereby suppressing gene expression. Fisetin may protect against the progression of inflammatory diseases by limiting interactions between mast cells and activated T cells.
Collapse
Affiliation(s)
- K Nagai
- National Food Research Institute, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan
| | | | | | | | | | | |
Collapse
|
20
|
Moya-García AA, Pino-Ángeles A, Gil-Redondo R, Morreale A, Sánchez-Jiménez F. Structural features of mammalian histidine decarboxylase reveal the basis for specific inhibition. Br J Pharmacol 2009; 157:4-13. [PMID: 19413567 PMCID: PMC2697795 DOI: 10.1111/j.1476-5381.2009.00219.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2009] [Accepted: 01/29/2009] [Indexed: 12/17/2022] Open
Abstract
For a long time the structural and molecular features of mammalian histidine decarboxylase (EC 4.1.1.22), the enzyme that produces histamine, have evaded characterization. We overcome the experimental problems for the study of this enzyme by using a computer-based modelling and simulation approach, and have now the conditions to use histidine decarboxylase as a target in histamine pharmacology. In this review, we present the recent (last 5 years) advances in the structure-function relationship of histidine decarboxylase and the strategy for the discovery of new drugs.
Collapse
Affiliation(s)
- AA Moya-García
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de MálagaCampus de Teatinos, Málaga, Spain
- CIBER de Enfermedades Raras (CIBERER)Valencia, Spain
| | - A Pino-Ángeles
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de MálagaCampus de Teatinos, Málaga, Spain
- CIBER de Enfermedades Raras (CIBERER)Valencia, Spain
| | - R Gil-Redondo
- Unidad de Bioinformática, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), C/Nicolás Cabrera 1Campus de Cantoblanco, Madrid, Spain
| | - A Morreale
- Unidad de Bioinformática, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), C/Nicolás Cabrera 1Campus de Cantoblanco, Madrid, Spain
| | - F Sánchez-Jiménez
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de MálagaCampus de Teatinos, Málaga, Spain
- CIBER de Enfermedades Raras (CIBERER)Valencia, Spain
| |
Collapse
|
21
|
Melgarejo E, Medina MA, Sánchez-Jiménez F, Urdiales JL. Monocyte chemoattractant protein-1: a key mediator in inflammatory processes. Int J Biochem Cell Biol 2008; 41:998-1001. [PMID: 18761421 DOI: 10.1016/j.biocel.2008.07.018] [Citation(s) in RCA: 206] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2008] [Revised: 07/14/2008] [Accepted: 07/17/2008] [Indexed: 12/13/2022]
Abstract
Monocyte chemoattractant protein-1 (MCP-1) is a potent chemoattractant for monocytes and macrophages to areas of inflammation. MCP-1 is a prototypical chemokine subject to coordinated regulation by immunomodulatory agents. Since MCP-1 is implicated in multiple inflammatory diseases, it is a potential target for the treatment of these disorders. In this review, we will provide background information and summarize the MCP-1 structure and signaling pathways. Its involvement in multiple diseases, such as tumour development, atherogenesis and rare autoimmune diseases is also revised.
Collapse
Affiliation(s)
- Esther Melgarejo
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, E-29071 Málaga, Spain.
| | | | | | | |
Collapse
|
22
|
Crivellato E, Nico B, Ribatti D. Mast cells and tumour angiogenesis: new insight from experimental carcinogenesis. Cancer Lett 2008; 269:1-6. [PMID: 18450371 DOI: 10.1016/j.canlet.2008.03.031] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2008] [Revised: 03/03/2008] [Accepted: 03/25/2008] [Indexed: 02/04/2023]
Abstract
Histopathologic examination and clinical observations of solid and haematological malignancies indicates mast cells as key host cells in the tumour infiltrate, with important consequence on tumour-associated angiogenesis and tumour growth. Data suggest indeed that tumour-infiltrating mast cells may exert a prominent function in the angiogenic "switch", which is essential for the progression of early tumours. The experimental approach has substantially increased our understanding of the role of tumour-infiltrating mast cells in the process of angiogenesis that accompanies tumour development. This review will focus on the crucial contribution of mast cells in promoting tumour neovascularization as it emerges from the most recent observations of experimental carcinogenesis in in vivo and in vitro models.
Collapse
Affiliation(s)
- Enrico Crivellato
- Department of Medical and Morphological Research, Anatomy Section, University of Udine Medical School, P.le Kolbe, 3, I-33100 Udine, Italy.
| | | | | |
Collapse
|