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Bala K, Porel P, Aran KR. Emerging roles of cannabinoid receptor CB2 receptor in the central nervous system: therapeutic target for CNS disorders. Psychopharmacology (Berl) 2024; 241:1939-1954. [PMID: 39264450 DOI: 10.1007/s00213-024-06683-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Accepted: 08/30/2024] [Indexed: 09/13/2024]
Abstract
RATIONALE The endocannabinoid system (ECS) belongs to the G protein-coupled receptor family of cell membranes and is associated with neuropsychiatric conditions, and neurodegenerative diseases. Cannabinoid 2 receptors (CB2) are expressed in the central nervous system (CNS) on microglia and subgroups of neurons and are involved in various behavioural processes via immunological and neural regulation. OBJECTIVE The objective of this paper is to summarize and explore the impact of CB2 receptors on neuronal modulation, their involvement in various neurological disorders, and their influence on mood, behavior, and cognitive function. RESULTS The activation of CB2 appears to protect the brain and its functions from damage under neuroinflammatory actions, making it an attractive target in a variety of neurological conditions such as Parkinson's disease (PD), multiple sclerosis (MS), Alzheimer's disease (AD), and Huntington's disease (HD). During inflammation, there is an overexpression of CB2 receptors, and CB2 agonists show a strong anti-inflammatory effect. These results have sparked interest in the CB2 receptors as a potential target for neurodegenerative and neuroinflammatory disease treatment. CONCLUSION In conclusion, CB2 receptors signalling shows promise for developing targeted interventions that could positively affect both immune and neuronal functions, ultimately influencing behavioral outcomes in both health and disease.
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Affiliation(s)
- Kanchan Bala
- Department of Pharmacy Practice, ISF College of Pharmacy, Moga, Punjab, India
| | - Pratyush Porel
- Neuropharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, 142001, India
| | - Khadga Raj Aran
- Neuropharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, 142001, India.
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Barker H, Ferraro MJ. Exploring the versatile roles of the endocannabinoid system and phytocannabinoids in modulating bacterial infections. Infect Immun 2024; 92:e0002024. [PMID: 38775488 PMCID: PMC11237442 DOI: 10.1128/iai.00020-24] [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] [Indexed: 06/12/2024] Open
Abstract
The endocannabinoid system (ECS), initially identified for its role in maintaining homeostasis, particularly in regulating brain function, has evolved into a complex orchestrator influencing various physiological processes beyond its original association with the nervous system. Notably, an expanding body of evidence emphasizes the ECS's crucial involvement in regulating immune responses. While the specific role of the ECS in bacterial infections remains under ongoing investigation, compelling indications suggest its active participation in host-pathogen interactions. Incorporating the ECS into the framework of bacterial pathogen infections introduces a layer of complexity to our understanding of its functions. While some studies propose the potential of cannabinoids to modulate bacterial function and immune responses, the outcomes inherently hinge on the specific infection and cannabinoid under consideration. Moreover, the bidirectional relationship between the ECS and the gut microbiota underscores the intricate interplay among diverse physiological processes. The ECS extends its influence far beyond its initial discovery, emerging as a promising therapeutic target across a spectrum of medical conditions, encompassing bacterial infections, dysbiosis, and sepsis. This review comprehensively explores the complex roles of the ECS in the modulation of bacteria, the host's response to bacterial infections, and the dynamics of the microbiome. Special emphasis is placed on the roles of cannabinoid receptor types 1 and 2, whose signaling intricately influences immune cell function in microbe-host interactions.
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Affiliation(s)
- Hailey Barker
- Microbiology and Cell Science Department, IFAS, University of Florida, Gainesville, Florida, USA
| | - Mariola J. Ferraro
- Microbiology and Cell Science Department, IFAS, University of Florida, Gainesville, Florida, USA
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Machado JPD, de Almeida V, Zuardi AW, Hallak JEC, Crippa JA, Vieira AS. Cannabidiol modulates hippocampal genes involved in mitochondrial function, ribosome biogenesis, synapse organization, and chromatin modifications. Acta Neuropsychiatr 2024:1-7. [PMID: 38528655 DOI: 10.1017/neu.2024.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
BACKGROUND Cannabidiol (CBD) is one of the main cannabinoids present in Cannabis sativa female flowers. Previous investigation has already provided insights into the CBD molecular mechanism; however, there is no transcriptome data for CBD effects on hippocampal subfields. Here, we investigate transcriptomic changes in dorsal and ventral CA1 of adult mice hippocampus after 100 mg/kg of CBD administration (i.p.) for one or seven consecutive days. METHODS C57BL/6JUnib mice were treated with either vehicle or CBD for 1 or 7 days. The collected brains were sectioned, and the hippocampal sub-regions were laser microdissected for RNA-Seq analysis. RESULTS The transcriptome analysis following 7 days of CBD administration indicates the differential expression of 1559 genes in dCA1 and 2924 genes in vCA1. Furthermore, GO/KEGG analysis identified 88 significantly enriched biological process and 26 significantly enriched pathways for dCBD7, whereas vCBD7 revealed 128 enriched BPs and 24 pathways. CONCLUSION This dataset indicates a widespread decrease of electron transport chain and ribosome biogenesis transcripts in CA1, while chromatin modifications and synapse organization transcripts were increased following CBD administration for 7 days.
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Affiliation(s)
- João P D Machado
- Laboratory of Electrophysiology, Neurobiology and Behaviour, Dept Functional and Structural Biology, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil
- Brazilian Institute of Neuroscience and Neurotechnology (BRAINN), Campinas, São Paulo, Brazil
| | - Valéria de Almeida
- Laboratory of Neuroproteomics,, Dept Biochemistry and Tissue Biology, Institute of Biology, University of Campinas, Campinsas, São Paulo, Brazil
| | - Antonio W Zuardi
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- National Institute for Science and Technology - Translational Medicine, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Jaime E C Hallak
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- National Institute for Science and Technology - Translational Medicine, Rio de Janeiro, Rio de Janeiro, Brazil
| | - José A Crippa
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- National Institute for Science and Technology - Translational Medicine, Rio de Janeiro, Rio de Janeiro, Brazil
| | - André S Vieira
- Laboratory of Electrophysiology, Neurobiology and Behaviour, Dept Functional and Structural Biology, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil
- Brazilian Institute of Neuroscience and Neurotechnology (BRAINN), Campinas, São Paulo, Brazil
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Bietar B, Tanner S, Lehmann C. Neuroprotection and Beyond: The Central Role of CB1 and CB2 Receptors in Stroke Recovery. Int J Mol Sci 2023; 24:16728. [PMID: 38069049 PMCID: PMC10705908 DOI: 10.3390/ijms242316728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/20/2023] [Accepted: 11/21/2023] [Indexed: 12/18/2023] Open
Abstract
The endocannabinoid system, with its intricate presence in numerous cells, tissues, and organs, offers a compelling avenue for therapeutic interventions. Central to this system are the cannabinoid receptors 1 and 2 (CB1R and CB2R), whose ubiquity can introduce complexities in targeted treatments due to their wide-ranging physiological influence. Injuries to the central nervous system (CNS), including strokes and traumatic brain injuries, induce localized pro-inflammatory immune responses, termed neuroinflammation. Research has shown that compensatory immunodepression usually follows, and these mechanisms might influence immunity, potentially affecting infection risks in patients. As traditional preventive treatments like antibiotics face challenges, the exploration of immunomodulatory therapies offers a promising alternative. This review delves into the potential neuroprotective roles of the cannabinoid receptors: CB1R's involvement in mitigating excitotoxicity and CB2R's dual role in promoting cell survival and anti-inflammatory responses. However, the potential of cannabinoids to reduce neuroinflammation must be weighed against the risk of exacerbating immunodepression. Though the endocannabinoid system promises numerous therapeutic benefits, understanding its multifaceted signaling mechanisms and outcomes remains a challenge.
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Affiliation(s)
- Bashir Bietar
- Department of Pharmacology, Dalhousie University, Halifax, NS B3H 4R2, Canada; (B.B.); (S.T.)
- Department of Anesthesia, Pain Management, and Perioperative Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Sophie Tanner
- Department of Pharmacology, Dalhousie University, Halifax, NS B3H 4R2, Canada; (B.B.); (S.T.)
- Department of Anesthesia, Pain Management, and Perioperative Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Christian Lehmann
- Department of Pharmacology, Dalhousie University, Halifax, NS B3H 4R2, Canada; (B.B.); (S.T.)
- Department of Anesthesia, Pain Management, and Perioperative Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada
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Souza CF, Borges LB, Oliveira FRMB, Silva PCDS, Patricio DO, Rosales TO, Souza NF, Spiller F, Mansur DS, Assreuy J, Sordi R. Cannabinoid CB 2 receptor agonist reduces local and systemic inflammation associated with pneumonia-induced sepsis in mice. Eur J Pharmacol 2023; 959:176092. [PMID: 37797676 DOI: 10.1016/j.ejphar.2023.176092] [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: 03/13/2023] [Revised: 10/02/2023] [Accepted: 10/03/2023] [Indexed: 10/07/2023]
Abstract
Sepsis is a severe condition secondary to dysregulated host response to infection leading to tissue damage and organ dysfunction. Cannabinoid CB2 receptor has modulatory effects on the immune response. Therefore, this study investigated the effects of a cannabinoid CB2 receptor agonist on the local and systemic inflammatory process associated with pneumonia-induced sepsis. Pneumonia-induced sepsis was induced in mice by intratracheal inoculation of Klebsiella pneumoniae. Tissue and bronchoalveolar lavage (BAL) were collected 6, 24, or 48 h after surgery. Mice were treated with CB2 agonist (AM1241, 0.3 and 3 mg/kg, i.p.) and several parameters of inflammation were evaluated 24 h after sepsis induction. Polymorphonuclear cell migration to the infectious focus peaked 24 h after pneumonia-induced sepsis induction in male and female animals. Septic male mice presented a significant reduction of cannabinoid CB2 receptor density in the lung tissue after 24 h, which was not observed in females. CB2 expression in BAL macrophages was also reduced in septic animals. Treatment of septic mice with AM1241 reduced cell migration, local infection, myeloperoxidase activity, protein extravasation, and NOS-2 expression in the lungs. In addition, the treatment reduced plasma IL-1β, increased IL-10 and reduced the severity and mortality of septic animals. These results suggest that AM1241 promotes an interesting balance in the inflammatory response, maintaining lung function and preventing organ injury. Therefore, cannabinoid CB2 receptors are potential targets to control the excessive inflammatory process that occurs in severe conditions, and agonists of these receptors can be considered promising adjuvants in pneumonia-induced sepsis treatment.
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Affiliation(s)
| | | | | | | | - Daniel Oliveira Patricio
- Department of Microbiology, Immunology anda Parasitology, Federal University of Santa Catarina, SC, Brazil
| | | | | | - Fernando Spiller
- Department of Pharmacology, Federal University of Santa Catarina, SC, Brazil
| | - Daniel Santos Mansur
- Department of Microbiology, Immunology anda Parasitology, Federal University of Santa Catarina, SC, Brazil
| | - Jamil Assreuy
- Department of Pharmacology, Federal University of Santa Catarina, SC, Brazil
| | - Regina Sordi
- Department of Pharmacology, Federal University of Santa Catarina, SC, Brazil.
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Tabata H, Morita H, Kouyama K, Tohyama Y. Complement dependent TNFα production in neutrophil-like HL60 cells. Biochem Biophys Rep 2023; 34:101465. [PMID: 37125077 PMCID: PMC10130347 DOI: 10.1016/j.bbrep.2023.101465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 03/12/2023] [Accepted: 04/03/2023] [Indexed: 05/02/2023] Open
Abstract
Neutrophils develop in the bone marrow (BM) from hematopoietic stem cells (HSCs) through a series of progenitor cells and mature neutrophils play a critical role in the human immune system. Previous studies revealed that tumor necrosis factor α (TNFα) produced by immature neutrophils contributes to HSCs development and vascular regeneration in the BM niche. However, the precise mechanism of TNFα production in immature neutrophils remains unclear. This study aims to assess the relationship between complement C3 activation and TNFα production from immature neutrophils. We investigated the regulatory mechanism of TNFα production by complement components in neutrophil-like HL60 cells. Flow cytometric analysis showed that C3a receptor (C3aR) and C3bi receptor (CR3, Mac-1, CD11b/CD18, integrin αMβ2) are expressed on the surface of neutrophil-like HL60 cells. We found that zymosan-treated human serum leads to TNFα production in neutrophil-like HL60 cells, but not in human polymorphonuclear cells (PMNs). A C3-convertase inhibitor, compstatin suppresses TNFα production. These data suggest that the TNFα production is mediated by complement C3 activation. Furthermore, the TNFα production is enhanced by Ca2+ elevating agents, thapsigargin (TG), but is suppressed by treatment with Ca2+ chelators, EGTA, or BAPTA-AM. In addition, the soluble TNFα production is suppressed by treatment with immobilized-fibrinogen or -fibronectin. Thus, the TNFα production is enhanced by intracellular Ca2+ elevation and is negatively regulated by the interaction between the neutrophil-like HL60 cells and fibrinogen or fibronectin.
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Affiliation(s)
- Hiroyuki Tabata
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Hyogo, 670-8524, Japan
- Corresponding author.
| | - Hiroyuki Morita
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Hyogo, 670-8524, Japan
| | - Kenichi Kouyama
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Hyogo, 670-8524, Japan
| | - Yumi Tohyama
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Hyogo, 670-8524, Japan
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Sánchez-Sanz A, Posada-Ayala M, Sabín-Muñoz J, Fernández-Miranda I, Aladro-Benito Y, Álvarez-Lafuente R, Royuela A, García-Hernández R, la Fuente ORD, Romero J, García-Merino A, Sánchez-López AJ. Endocannabinoid levels in peripheral blood mononuclear cells of multiple sclerosis patients treated with dimethyl fumarate. Sci Rep 2022; 12:20300. [PMID: 36434122 PMCID: PMC9700785 DOI: 10.1038/s41598-022-21807-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 10/04/2022] [Indexed: 11/27/2022] Open
Abstract
The endocannabinoid system (ECS), a signalling network with immunomodulatory properties, is a potential therapeutic target in multiple sclerosis (MS). Dimethyl fumarate (DMF) is an approved drug for MS whose mechanism of action has not been fully elucidated; the possibility exists that its therapeutic effects could imply the ECS. With the aim of studying if DMF can modulate the ECS, the endocannabinoids 2-arachidonoylglycerol (2-AG), anandamide (AEA), oleoylethanolamide (OEA) and palmitoylethanolamide (PEA) were determined by liquid chromatography-mass spectrometry in peripheral blood mononuclear cells from 21 healthy donors (HD) and 32 MS patients at baseline and after 12 and 24 months of DMF treatment. MS patients presented lower levels of 2-AG and PEA compared to HD. 2-AG increased at 24 months, reaching HD levels. AEA and PEA remained stable at 12 and 24 months. OEA increased at 12 months and returned to initial levels at 24 months. Patients who achieved no evidence of disease activity (NEDA3) presented the same modulation over time as EDA3 patients. PEA was modulated differentially between females and males. Our results show that the ECS is dysregulated in MS patients. The increase in 2-AG and OEA during DMF treatment suggests a possible role of DMF in ECS modulation.
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Affiliation(s)
- Alicia Sánchez-Sanz
- Neuroimmunology Unit, Instituto de Investigación Sanitaria Puerta de Hierro-Segovia de Arana, Madrid, Spain ,grid.5515.40000000119578126PhD Program in Molecular Biosciences, Doctoral School, Universidad Autónoma de Madrid, Madrid, Spain
| | - María Posada-Ayala
- grid.449795.20000 0001 2193 453XFaculty of Experimental Sciences, Universidad Francisco de Vitoria, Madrid, Spain
| | - Julia Sabín-Muñoz
- grid.73221.350000 0004 1767 8416Department of Neurology, Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
| | - Ismael Fernández-Miranda
- grid.5515.40000000119578126PhD Program in Molecular Biosciences, Doctoral School, Universidad Autónoma de Madrid, Madrid, Spain ,Lymphoma Research Group, Instituto de Investigación Sanitaria Puerta de Hierro-Segovia de Arana, Madrid, Spain
| | - Yolanda Aladro-Benito
- grid.411244.60000 0000 9691 6072Department of Neurology, Hospital Universitario de Getafe, Madrid, Spain
| | - Roberto Álvarez-Lafuente
- grid.414780.eGrupo de Investigación de Factores Ambientales en Enfermedades Degenerativas, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos, Madrid, Spain ,grid.483890.e0000 0004 6095 7779Red Española de Esclerosis Múltiple (REEM), Barcelona, Spain
| | - Ana Royuela
- Clinical Biostatistics Unit, Instituto de Investigación Sanitaria Puerta de Hierro-Segovia de Arana, Madrid, Spain
| | - Ruth García-Hernández
- Neuroimmunology Unit, Instituto de Investigación Sanitaria Puerta de Hierro-Segovia de Arana, Madrid, Spain
| | - Ofir Rodríguez-De la Fuente
- grid.73221.350000 0004 1767 8416Department of Neurology, Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
| | - Julián Romero
- grid.449795.20000 0001 2193 453XFaculty of Experimental Sciences, Universidad Francisco de Vitoria, Madrid, Spain
| | - Antonio García-Merino
- Neuroimmunology Unit, Instituto de Investigación Sanitaria Puerta de Hierro-Segovia de Arana, Madrid, Spain ,grid.73221.350000 0004 1767 8416Department of Neurology, Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain ,grid.483890.e0000 0004 6095 7779Red Española de Esclerosis Múltiple (REEM), Barcelona, Spain ,grid.5515.40000000119578126Department of Medicine, Universidad Autónoma de Madrid, Madrid, Spain
| | - Antonio José Sánchez-López
- Neuroimmunology Unit, Instituto de Investigación Sanitaria Puerta de Hierro-Segovia de Arana, Madrid, Spain ,grid.483890.e0000 0004 6095 7779Red Española de Esclerosis Múltiple (REEM), Barcelona, Spain ,Biobank, Instituto de Investigación Sanitaria Puerta de Hierro-Segovia de Arana, Madrid, Spain
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Simard M, Rakotoarivelo V, Di Marzo V, Flamand N. Expression and Functions of the CB 2 Receptor in Human Leukocytes. Front Pharmacol 2022; 13:826400. [PMID: 35273503 PMCID: PMC8902156 DOI: 10.3389/fphar.2022.826400] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 01/14/2022] [Indexed: 01/21/2023] Open
Abstract
The cannabinoid CB2 receptor was cloned from the promyeloid cell line HL-60 and is notably expressed in most, if not all leukocyte types. This relatively restricted localization, combined to the absence of psychotropic effects following its activation, make it an attractive drug target for inflammatory and autoimmune diseases. Therefore, there has been an increasing interest in the past decades to identify precisely which immune cells express the CB2 receptor and what are the consequences of such activation. Herein, we provide new data on the expression of both CB1 and CB2 receptors by human blood leukocytes and discuss the impact of CB2 receptor activation in human leukocytes. While the expression of the CB2 mRNA can be detected in eosinophils, neutrophils, monocytes, B and T lymphocytes, this receptor is most abundant in human eosinophils and B lymphocytes. We also review the evidence obtained from primary human leukocytes and immortalized cell lines regarding the regulation of their functions by the CB2 receptor, which underscore the urgent need to deepen our understanding of the CB2 receptor as an immunoregulator in humans.
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Affiliation(s)
- Mélissa Simard
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Département of Médecine, Faculté de Médecine, Université Laval, Québec City, QC, Canada.,Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health (CERC-MEND), Université Laval, Québec City, QC, Canada
| | - Volatiana Rakotoarivelo
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Département of Médecine, Faculté de Médecine, Université Laval, Québec City, QC, Canada.,Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health (CERC-MEND), Université Laval, Québec City, QC, Canada
| | - Vincenzo Di Marzo
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Département of Médecine, Faculté de Médecine, Université Laval, Québec City, QC, Canada.,Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health (CERC-MEND), Université Laval, Québec City, QC, Canada.,Endocannabinoid Research Group, Institute of Biomolecular Chemistry, Consiglio Nazionale Delle Ricerche (CNR), Pozzuoli, Italy.,Institut sur la Nutrition et les Aliments Fonctionnels, Centre NUTRISS, École de Nutrition, Faculté des Sciences de L'agriculture et de L'alimentation, Université Laval, Québec City, QC, Canada.,Joint International Unit Between the Consiglio Nazionale Delle Ricerche (Italy) and Université Laval (Canada) on Chemical and Biomolecular Research on the Microbiome and Its Impact on Metabolic Health and Nutrition (UMI-MicroMeNu), Naples, Italy
| | - Nicolas Flamand
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Département of Médecine, Faculté de Médecine, Université Laval, Québec City, QC, Canada.,Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health (CERC-MEND), Université Laval, Québec City, QC, Canada
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9
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Ruhl T, Lippold EF, Christer T, Schaefer B, Kim BS, Beier JP. Genetic deletion of the cannabinoid receptors CB1 and CB2 enhances inflammation with diverging effects on skin wound healing in mice. Life Sci 2021; 285:120018. [PMID: 34624321 DOI: 10.1016/j.lfs.2021.120018] [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: 07/26/2021] [Revised: 09/27/2021] [Accepted: 09/30/2021] [Indexed: 01/13/2023]
Abstract
AIMS Inflammation during wound healing is both essential and critical for restoring tissue integrity. Participating cells secrete soluble factors to regulate the inflammatory phase and to induce the adjacent regenerative processes. If pro-inflammatory signals are overexpressed, the wound stagnates in the inflammatory phase, which decelerates regular wound healing. The endocannabinoid system is ascribed great significance in maintenance of tissue homeostasis. It mediates several effects through the cannabinoid receptors CB1 and CB2. MAIN METHODS In order to clarify the role of these receptors in wound healing, excisional wounds were created on wildtype and CB1 and CB2 knockout mice. The wound closure was analyzed over a period of 14 days, and cytokine concentrations of tissue homogenisates were measured by ELISA. MSCs were isolated from the animals' subcutaneous adipose tissue and analyzed for viability and differentiation capacity, in vitro. KEY FINDINGS Deletion of CB2 increased Interleukin (IL)-6 and tumor necrosis factor (TNF)-α but did not affect tissue regeneration. In CB1-deficient animals, wound closure was delayed during early phases of healing, which was accompanied by increased concentrations of monocyte chemoattractant protein (MCP)-1 and TNF-α. CB1 and CB2 knockout MSCs presented altered viability and differentiation capacity compared to wildtype MSCs. The CB1-deficient MSCs released high levels of MCP-1 upon stimulation with TNF-α and IL-1β. SIGNIFICANCE The data indicate that both cannabinoid receptors regulate inflammation, and this study emphasizes the important role of CB1 in wound repair. Furthermore, our findings suggest that the secretome of CB1-deficient MSCs may contribute to the wound healing delay, in vivo.
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Affiliation(s)
- Tim Ruhl
- Department of Plastic Surgery, Hand Surgery-Burn Center, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany.
| | - Ella F Lippold
- Department of Plastic Surgery, Hand Surgery-Burn Center, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany.
| | - Tim Christer
- Department of Plastic Surgery, Hand Surgery-Burn Center, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany.
| | - Benedikt Schaefer
- Department of Plastic Surgery, Hand Surgery-Burn Center, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany.
| | - Bong-Sung Kim
- Department of Plastic Surgery, Hand Surgery-Burn Center, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany.
| | - Justus P Beier
- Department of Plastic Surgery, Hand Surgery-Burn Center, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany.
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10
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Fatty Acid Amide Hydrolase (FAAH) Inhibition Modulates Amyloid-Beta-Induced Microglia Polarization. Int J Mol Sci 2021; 22:ijms22147711. [PMID: 34299330 PMCID: PMC8306898 DOI: 10.3390/ijms22147711] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 12/19/2022] Open
Abstract
The ability of endocannabinoid (eCB) to change functional microglial phenotype can be explored as a possible target for therapeutic intervention. Since the inhibition of fatty acid amide hydrolase (FAAH), the main catabolic enzyme of anandamide (AEA), may provide beneficial effects in mice model of Alzheimer’s disease (AD)-like pathology, we aimed at determining whether the FAAH inhibitor URB597 might target microglia polarization and alter the cytoskeleton reorganization induced by the amyloid-β peptide (Aβ). The morphological evaluation showed that Aβ treatment increased the surface area of BV-2 cells, which acquired a flat and polygonal morphology. URB597 treatment partially rescued the control phenotype of BV-2 cells when co-incubated with Aβ. Moreover, URB597 reduced both the increase of Rho protein activation in Aβ-treated BV-2 cells and the Aβ-induced migration of BV-2 cells, while an increase of Cdc42 protein activation was observed in all samples. URB597 also increased the number of BV-2 cells involved in phagocytosis. URB597 treatment induced the polarization of microglial cells towards an anti-inflammatory phenotype, as demonstrated by the decreased expression of iNOS and pro-inflammatory cytokines along with the parallel increase of Arg-1 and anti-inflammatory cytokines. Taken together, these data suggest that FAAH inhibition promotes cytoskeleton reorganization, regulates phagocytosis and cell migration processes, thus driving microglial polarization towards an anti-inflammatory phenotype.
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11
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Robaina Cabrera CL, Keir-Rudman S, Horniman N, Clarkson N, Page C. The anti-inflammatory effects of cannabidiol and cannabigerol alone, and in combination. Pulm Pharmacol Ther 2021; 69:102047. [PMID: 34082108 DOI: 10.1016/j.pupt.2021.102047] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 04/30/2021] [Accepted: 05/28/2021] [Indexed: 02/07/2023]
Abstract
INTRODUCTION/BACKGROUND AND PURPOSE Studies with Cannabis Sativa plant extracts and endogenous agonists of cannabinoid receptors have demonstrated anti-inflammatory, bronchodilator, and antitussive properties in the airways of allergic and non-allergic animals. However, the potential therapeutic use of cannabis and cannabinoids for the treatment of respiratory diseases has not been widely investigated, in part because of local irritation of airways by needing to smoke the cannabis, poor bioavailability when administered orally due to the lipophilic nature of cannabinoids, and the psychoactive effects of Δ9-Tetrahydrocannabinol (Δ9-THC) found in cannabis. The primary purpose of this study was to investigate the anti-inflammatory effects of two of the non-psychotropic cannabinoids, cannabidiol (CBD) and cannabigerol (CBG) alone and in combination, in a model of pulmonary inflammation induced by bacterial lipopolysaccharide (LPS). The second purpose was to explore the effects of two different cannabinoid formulations administered orally (PO) and intraperitoneally (IP). Medium-chain triglyceride (MCT) oil was used as the sole solvent for one formulation, whereas the second formulation consisted of a Cremophor® EL (polyoxyl 35 castor oil, CrEL)-based micellar solution. RESULTS Exposure of guinea pigs to LPS induced a 97 ± 7% and 98 ± 3% increase in neutrophils found in bronchoalveolar lavage fluid (BAL) at 4 h and 24 h, respectively. Administration of CBD and CBG formulated with MCT oil did not show any significant effects on the LPS-induced neutrophilia measured in the BAL fluid when compared with the vehicle-treated groups. Conversely, the administration of either cannabinoid formulated with CrEL induced a significant attenuation of the LPS induced recruitment of neutrophils into the lung following both intraperitoneal (IP) and oral (PO) administration routes, with a 55-65% and 50-55% decrease in neutrophil cell recruitment with the highest doses of CBD and CBG respectively. A combination of CBD and CBG (CBD:CBG = 1:1) formulated in CrEL and administered orally was also tested to determine possible interactions between the cannabinoids. However, a mixture of CBD and CBG did not show a significant change in LPS-induced neutrophilia. Surfactants, such as CrEL, improves the dissolution of lipophilic drugs in an aqueous medium by forming micelles and entrapping the drug molecules within them, consequently increasing the drug dissolution rate. Additionally, surfactants increase permeability and absorption by disrupting the structural organisation of the cellular lipid bilayer. CONCLUSION In conclusion, this study has provided evidence that CBD and CBG formulated appropriately exhibit anti-inflammatory activity. Our observations suggest that these non-psychoactive cannabinoids may have beneficial effects in treating diseases characterised by airway inflammation.
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Affiliation(s)
- Carmen Lorena Robaina Cabrera
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, King's College London, SE1 9NH, London, United Kingdom
| | - Sandra Keir-Rudman
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, King's College London, SE1 9NH, London, United Kingdom
| | - Nick Horniman
- Sativa Wellness Group Inc., the Blue Building, Stubbs Lane, Beckington, BA11 6TE, Somerset, United Kingdom
| | - Nick Clarkson
- Sativa Wellness Group Inc., the Blue Building, Stubbs Lane, Beckington, BA11 6TE, Somerset, United Kingdom
| | - Clive Page
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, King's College London, SE1 9NH, London, United Kingdom.
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12
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Rahaman O, Ganguly D. Endocannabinoids in immune regulation and immunopathologies. Immunology 2021; 164:242-252. [PMID: 34053085 DOI: 10.1111/imm.13378] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 04/19/2021] [Accepted: 05/10/2021] [Indexed: 12/12/2022] Open
Abstract
Endocannabinoids are key bioactive components of the endocannabinoid system, and the profound influence of endocannabinoids on the modulation of the immune system is being increasingly appreciated. The knowledge of endocannabinoid-immune cell crosstalk will pave the way to therapeutic implications of modulators of this pathway in autoimmune and chronic inflammatory disorders. Endocannabinoids seem to exert both anti-inflammatory and pro-inflammatory effects in specific contexts, based on specific receptor engagement and the downstream signalling pathways involved. In this review, we summarized the biosynthesis, signalling and degradation of two well-studied endocannabinoids-anandamide and 2-arachidonylglycerol in immune cells. Then, we discussed the effects of these two endocannabinoids on the functioning of major innate and adaptive immune cells, along with the choice of receptors employed in such interactions. Finally, we outline our current knowledge on the involvement of anandamide and 2-arachidonylglycerol in context of inflammation, allergies, autoimmunity and metabolic disorders.
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Affiliation(s)
- Oindrila Rahaman
- Dendritic Cell Biology Laboratory, IICB-Translational Research Unit of Excellence, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Dipyaman Ganguly
- Dendritic Cell Biology Laboratory, IICB-Translational Research Unit of Excellence, CSIR-Indian Institute of Chemical Biology, Kolkata, India
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13
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Kasatkina LA, Rittchen S, Sturm EM. Neuroprotective and Immunomodulatory Action of the Endocannabinoid System under Neuroinflammation. Int J Mol Sci 2021; 22:ijms22115431. [PMID: 34063947 PMCID: PMC8196612 DOI: 10.3390/ijms22115431] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/17/2021] [Accepted: 05/18/2021] [Indexed: 12/17/2022] Open
Abstract
Endocannabinoids (eCBs) are lipid-based retrograde messengers with a relatively short half-life that are produced endogenously and, upon binding to the primary cannabinoid receptors CB1/2, mediate multiple mechanisms of intercellular communication within the body. Endocannabinoid signaling is implicated in brain development, memory formation, learning, mood, anxiety, depression, feeding behavior, analgesia, and drug addiction. It is now recognized that the endocannabinoid system mediates not only neuronal communications but also governs the crosstalk between neurons, glia, and immune cells, and thus represents an important player within the neuroimmune interface. Generation of primary endocannabinoids is accompanied by the production of their congeners, the N-acylethanolamines (NAEs), which together with N-acylneurotransmitters, lipoamino acids and primary fatty acid amides comprise expanded endocannabinoid/endovanilloid signaling systems. Most of these compounds do not bind CB1/2, but signal via several other pathways involving the transient receptor potential cation channel subfamily V member 1 (TRPV1), peroxisome proliferator-activated receptor (PPAR)-α and non-cannabinoid G-protein coupled receptors (GPRs) to mediate anti-inflammatory, immunomodulatory and neuroprotective activities. In vivo generation of the cannabinoid compounds is triggered by physiological and pathological stimuli and, specifically in the brain, mediates fine regulation of synaptic strength, neuroprotection, and resolution of neuroinflammation. Here, we review the role of the endocannabinoid system in intrinsic neuroprotective mechanisms and its therapeutic potential for the treatment of neuroinflammation and associated synaptopathy.
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Affiliation(s)
- Ludmila A. Kasatkina
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, 8010 Graz, Austria; (L.A.K.); (S.R.)
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Sonja Rittchen
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, 8010 Graz, Austria; (L.A.K.); (S.R.)
| | - Eva M. Sturm
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, 8010 Graz, Austria; (L.A.K.); (S.R.)
- Correspondence:
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14
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The Interplay between the Immune and the Endocannabinoid Systems in Cancer. Cells 2021; 10:cells10061282. [PMID: 34064197 PMCID: PMC8224348 DOI: 10.3390/cells10061282] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 12/11/2022] Open
Abstract
The therapeutic potential of Cannabis sativa has been recognized since ancient times. Phytocannabinoids, endocannabinoids and synthetic cannabinoids activate two major G protein-coupled receptors, subtype 1 and 2 (CB1 and CB2). Cannabinoids (CBs) modulate several aspects of cancer cells, such as apoptosis, autophagy, proliferation, migration, epithelial-to-mesenchymal transition and stemness. Moreover, agonists of CB1 and CB2 receptors inhibit angiogenesis and lymphangiogenesis in vitro and in vivo. Low-grade inflammation is a hallmark of cancer in the tumor microenvironment (TME), which contains a plethora of innate and adaptive immune cells. These cells play a central role in tumor initiation and growth and the formation of metastasis. CB2 and, to a lesser extent, CB1 receptors are expressed on a variety of immune cells present in TME (e.g., T cells, macrophages, mast cells, neutrophils, NK cells, dendritic cells, monocytes, eosinophils). The activation of CB receptors modulates a variety of biological effects on cells of the adaptive and innate immune system. The expression of CB2 and CB1 on different subsets of immune cells in TME and hence in tumor development is incompletely characterized. The recent characterization of the human cannabinoid receptor CB2-Gi signaling complex will likely aid to design potent and specific CB2/CB1 ligands with therapeutic potential in cancer.
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15
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Yonker LM, Barrios J, Mou H, Hurley BP. Untapped Potential: Therapeutically Targeting Eicosanoids and Endocannabinoids in the Lung. Clin Pharmacol Ther 2021; 110:69-81. [PMID: 33423293 DOI: 10.1002/cpt.2165] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 12/20/2020] [Indexed: 02/05/2023]
Abstract
Inflammation of the airway involves the recruitment of highly active immune cells to combat and clear microbes and toxic factors; however, this inflammatory response can result in unintended damage to lung tissue. Tissue damage resulting from inflammation is often mitigated by resolving factors that limit the scope and duration of the inflammatory response. Both inflammatory and resolving processes require the actions of a vast array of lipid mediators that can be rapidly synthesized through a variety of airway resident and infiltrating immune cells. Eicosanoids and endocannabinoids represent two major classes of lipid mediators that share synthetic enzymes and have diverse and overlapping functions. This review seeks to provide a summary of the major bioactive eicosanoids and endocannabinoids, challenges facing researchers that study them, and their roles in modulating inflammation and resolution. With a special emphasis on cystic fibrosis, a variety of therapeutics are discussed that have been explored for their potential anti-inflammatory or proresolving impact toward alleviating excessive airway inflammation and improving lung function.
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Affiliation(s)
- Lael M Yonker
- Massachusetts General Hospital, Department of Pediatrics, Pulmonary Division, Boston, Massachusetts, USA.,Massachusetts General Hospital, Mucosal Immunology and Biology Research Center, Boston, Massachusetts, USA.,Harvard Medical School, Department of Pediatrics, Boston, Massachusetts, USA
| | - Juliana Barrios
- Massachusetts General Hospital, Mucosal Immunology and Biology Research Center, Boston, Massachusetts, USA.,Harvard Medical School, Department of Pediatrics, Boston, Massachusetts, USA
| | - Hongmei Mou
- Massachusetts General Hospital, Mucosal Immunology and Biology Research Center, Boston, Massachusetts, USA.,Harvard Medical School, Department of Pediatrics, Boston, Massachusetts, USA
| | - Bryan P Hurley
- Massachusetts General Hospital, Mucosal Immunology and Biology Research Center, Boston, Massachusetts, USA.,Harvard Medical School, Department of Pediatrics, Boston, Massachusetts, USA
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16
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Wójcik P, Gęgotek A, Žarković N, Skrzydlewska E. Oxidative Stress and Lipid Mediators Modulate Immune Cell Functions in Autoimmune Diseases. Int J Mol Sci 2021; 22:ijms22020723. [PMID: 33450863 PMCID: PMC7828321 DOI: 10.3390/ijms22020723] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 01/08/2021] [Accepted: 01/11/2021] [Indexed: 12/15/2022] Open
Abstract
Autoimmune diseases, including psoriasis, systemic lupus erythematosus (SLE), and rheumatic arthritis (RA), are caused by a combination of environmental and genetic factors that lead to overactivation of immune cells and chronic inflammation. Since oxidative stress is a common feature of these diseases, which activates leukocytes to intensify inflammation, antioxidants could reduce the severity of these diseases. In addition to activating leukocytes, oxidative stress increases the production of lipid mediators, notably of endocannabinoids and eicosanoids, which are products of enzymatic lipid metabolism that act through specific receptors. Because the anti-inflammatory CB2 receptors are the predominant cannabinoid receptors in leukocytes, endocannabinoids are believed to act as anti-inflammatory factors that regulate compensatory mechanisms in autoimmune diseases. While administration of eicosanoids in vitro leads to the differentiation of lymphocytes into T helper 2 (Th2) cells, eicosanoids are also necessary for the different0iation of Th1 and Th17 cells. Therefore, their antagonists and/or the genetic deletion of their receptors abolish inflammation in animal models of psoriasis—RA and SLE. On the other hand, products of non-enzymatic lipid peroxidation, especially acrolein and 4-hydroxynonenal-protein adducts, mostly generated by an oxidative burst of granulocytes, may enhance inflammation and even acting as autoantigens and extracellular signaling molecules in the vicious circle of autoimmune diseases.
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Affiliation(s)
- Piotr Wójcik
- Department of Analytical Chemistry, Medical University of Bialystok, 15-222 Bialystok, Poland; (P.W.); (A.G.)
| | - Agnieszka Gęgotek
- Department of Analytical Chemistry, Medical University of Bialystok, 15-222 Bialystok, Poland; (P.W.); (A.G.)
| | - Neven Žarković
- Laboratory for Oxidative Stress, Rudjer Boskovic Institute, 10000 Zagreb, Croatia;
| | - Elżbieta Skrzydlewska
- Department of Analytical Chemistry, Medical University of Bialystok, 15-222 Bialystok, Poland; (P.W.); (A.G.)
- Correspondence:
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17
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Tahamtan A, Besteman S, Samadizadeh S, Rastegar M, Bont L, Salimi V. Neutrophils in respiratory syncytial virus infection: From harmful effects to therapeutic opportunities. Br J Pharmacol 2020; 178:515-530. [PMID: 33169387 DOI: 10.1111/bph.15318] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 10/27/2020] [Accepted: 11/02/2020] [Indexed: 12/15/2022] Open
Abstract
Respiratory syncytial virus (RSV) is an important infectious agent in infants and young children. In most cases, RSV infection only causes mild disease, but in some, it requires invasive ventilation. Although antiviral drugs are obvious candidates to treat viral illness, and some have shown antiviral effects in humans, antivirals such as GS-5806, ALX-0171 and ALS-8176 have not yet met their expectations. Since the inappropriate or dysregulated immune response against RSV leads to harmful immune pathology, a robust immune cascade is probably underway by the time patients reach the hospital. RSV infection is associated with a strong neutrophil influx into the airway. It not clear if these cells contribute to antiviral defence or to lung pathology. This article discusses the protective and harmful roles of neutrophils during RSV infection and provides an overview of mechanisms by which neutrophil function could be targeted to prevent tissue injury and preserve homeostasis.
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Affiliation(s)
- Alireza Tahamtan
- Infectious Diseases Research Centre, Golestan University of Medical Sciences, Gorgan, Iran.,Department of Microbiology, School of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Sjanna Besteman
- Department of Paediatrics, Wilhelmina Children's Hospital, University Medical Centre Utrecht, Utrecht, The Netherlands.,Center for Translation Immunology, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Saeed Samadizadeh
- Infectious Diseases Research Centre, Golestan University of Medical Sciences, Gorgan, Iran.,Department of Microbiology, School of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Mostafa Rastegar
- Department of Microbiology, School of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Louis Bont
- Department of Paediatrics, Wilhelmina Children's Hospital, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Vahid Salimi
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
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18
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Kienzl M, Kargl J, Schicho R. The Immune Endocannabinoid System of the Tumor Microenvironment. Int J Mol Sci 2020; 21:ijms21238929. [PMID: 33255584 PMCID: PMC7728085 DOI: 10.3390/ijms21238929] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 11/16/2020] [Accepted: 11/23/2020] [Indexed: 02/06/2023] Open
Abstract
Leukocytes are part of the tumor microenvironment (TME) and are critical determinants of tumor progression. Because of the immunoregulatory properties of cannabinoids, the endocannabinoid system (ECS) may have an important role in shaping the TME. Members of the ECS, an entity that consists of cannabinoid receptors, endocannabinoids and their synthesizing/degrading enzymes, have been associated with both tumor growth and rejection. Immune cells express cannabinoid receptors and produce endocannabinoids, thereby forming an “immune endocannabinoid system”. Although in vitro effects of exogenous cannabinoids on immune cells are well described, the role of the ECS in the TME, and hence in tumor development and immunotherapy, is still elusive. This review/opinion discusses the possibility that the “immune endocannabinoid system” can fundamentally influence tumor progression. The widespread influence of cannabinoids on immune cell functions makes the members of the ECS an interesting target that could support immunotherapy.
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Affiliation(s)
- Melanie Kienzl
- Division of Pharmacology, Otto Loewi Research Center, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria; (M.K.); (J.K.)
- BioTechMed, 8010 Graz, Austria
| | - Julia Kargl
- Division of Pharmacology, Otto Loewi Research Center, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria; (M.K.); (J.K.)
| | - Rudolf Schicho
- Division of Pharmacology, Otto Loewi Research Center, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria; (M.K.); (J.K.)
- BioTechMed, 8010 Graz, Austria
- Correspondence: ; Tel.: +43-316-385-74132; Fax: +43-316-385-79613
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19
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Cannabidiol Modifies the Formation of NETs in Neutrophils of Psoriatic Patients. Int J Mol Sci 2020; 21:ijms21186795. [PMID: 32947961 PMCID: PMC7554718 DOI: 10.3390/ijms21186795] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 09/11/2020] [Accepted: 09/15/2020] [Indexed: 12/18/2022] Open
Abstract
Psoriasis is associated with increased production of reactive oxygen species which leads to oxidative stress. As antioxidants can provide protection, the aim of this study was to evaluate the effects of cannabidiol (CBD) on neutrophil extracellular trap (NET) formation in psoriatic and healthy neutrophils. Important markers of NETosis were measured in healthy and psoriatic neutrophils after incubation with CBD, lipopolysaccharide (LPS), and LPS + CBD). The percentage of neutrophils undergoing NETosis and the level of NETosis markers (cfDNA, MPO, elastase) were higher in the neutrophils and blood plasma of psoriatic patients, compared to controls. After LPS treatment, all of the markers of NETosis, except elastase, and p47 and citrullinated histones, were increased in samples from healthy subjects and psoriasis patients. CBD reduced the concentrations of NETosis markers. This led to a reduction in NETosis, which was more pronounced in psoriatic neutrophils and neutrophils treated with LPS in both psoriatic and healthy participants. These results suggest that psoriatic patients neutrophils are at a higher risk of NETosis both in vitro and in vivo. CBD reduces NETosis, mainly in psoriatic neutrophils, possibly due to its antioxidant properties. The anti-NET properties of CBD suggest the positive effect of CBD in the treatment of autoimmune diseases.
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20
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Braile M, Cristinziano L, Marcella S, Varricchi G, Marone G, Modestino L, Ferrara AL, De Ciuceis A, Scala S, Galdiero MR, Loffredo S. LPS-mediated neutrophil VEGF-A release is modulated by cannabinoid receptor activation. J Leukoc Biol 2020; 109:621-631. [PMID: 32573828 DOI: 10.1002/jlb.3a0520-187r] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 05/14/2020] [Accepted: 05/28/2020] [Indexed: 12/15/2022] Open
Abstract
Neutrophils (PMNs) are innate immune cells with primary roles in inflammation and in host defense against infections. Both inflammatory and tumor angiogenesis are modulated by a sequential, coordinated production of angiogenic factors such as vascular endothelial growth factors (VEGFs), angiopoietins, hepatocyte growth factor (HGF), and chemokines. These factors are produced by several immune cells, including PMNs. Activation of cannabinoid receptor type-1 (CB1 ) and -2 (CB2 ) has been suggested as a new strategy to modulate in vitro and in vivo angiogenesis. We sought to investigate whether activation of CB1 and CB2 by CB agonists modulate LPS-mediated angiogenic activity of human PMNs. Highly purified PMNs were isolated from buffy coats of healthy donors. Cells were stimulated with CB1 and CB2 agonists/antagonists alone and/or in combination with LPS. Angiogenic factors in cell-free supernatants were measured by ELISA. The modulation of activation markers of PMNs by CB agonists was evaluated by flow cytometry. Angiogenesis in vitro was measured as tube formation by optical microscopy. Endothelial cell permeability was assessed by an in vitro vascular permeability assay. LPS-activated PMNs released VEGF-A, CXCL8, and HGF. Preincubation of PMNs with low concentrations of CB1 and CB2 agonists inhibited VEGF-A release induced by LPS, but did not affect CXCL8 and HGF production. The effects of CB agonists on VEGF-A release induced by LPS were reversed by preincubation with CB antagonists. CB agonists modulated in vitro angiogenesis and endothelial permeability induced by supernatants of LPS-activated PMNs through the reduction of VEGF-A. Neutrophils play a central role in the control of bacterial infections and in the outcome of sepsis. The latter condition is associated with an increase in circulating levels of VEGF-A. We demonstrated that low concentrations of CB agonists inhibit VEGF-A release from LPS-activated PMNs. These results suggest that CB agonists might represent a novel therapeutic strategy in patients with sepsis.
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Affiliation(s)
- Mariantonia Braile
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, Naples, Italy
| | - Leonardo Cristinziano
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, Naples, Italy
| | - Simone Marcella
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, Naples, Italy
| | - Gilda Varricchi
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, Naples, Italy.,WAO Center of Excellence, Naples, Italy.,CNR Institute of Experimental Endocrinology and Oncology "G. Salvatore", Naples, Italy
| | - Giancarlo Marone
- Department of Public Health, University of Naples Federico II, Italy.,Azienda Ospedaliera Ospedali dei Colli-Monaldi Hospital Pharmacy, Naples, Italy
| | - Luca Modestino
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, Naples, Italy
| | - Anne Lise Ferrara
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, Naples, Italy
| | - Agnese De Ciuceis
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, Naples, Italy
| | - Sara Scala
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, Naples, Italy
| | - Maria Rosaria Galdiero
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, Naples, Italy.,WAO Center of Excellence, Naples, Italy.,CNR Institute of Experimental Endocrinology and Oncology "G. Salvatore", Naples, Italy
| | - Stefania Loffredo
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, Naples, Italy.,WAO Center of Excellence, Naples, Italy.,CNR Institute of Experimental Endocrinology and Oncology "G. Salvatore", Naples, Italy
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21
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Sasatsuki H, Nakazaki A, Uchida K, Shibata T. Quantitative analysis of oxidized vitamin B1 metabolites generated by hypochlorous acid. Free Radic Biol Med 2020; 152:197-206. [PMID: 32201347 DOI: 10.1016/j.freeradbiomed.2020.03.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 03/05/2020] [Accepted: 03/14/2020] [Indexed: 11/16/2022]
Abstract
Thiamine, a water-soluble essential vitamin known as vitamin B1, acts as an important cofactor in various cellular processes, such as metabolism and energy production. Thiamine is also thought to have antioxidant effects as a singlet oxygen scavenger and a lipid peroxidation inhibitor. However, the oxidation mechanism and oxidized metabolites of thiamine are not completely established. In the present study, we investigated the oxidative reactivity of thiamine and found that three products were formed upon the reaction of thiamine with hypochlorous acid (HOCl). Based on the NMR and high resolution mass spectrometric analysis, the HOCl-oxidized metabolites of thiamine were identified as formylaminopyrimidine (FAP), thiamine sulfonic acid (TSA), and thiamine sulfinic ester (TSE). To evaluate the formation of these oxidized metabolites in vivo, we established a specific method for quantification of the oxidized thiamine metabolites using liquid chromatography-tandem mass spectrometry coupled with a stable isotope dilution method. Using this method, it was shown that the oxidized thiamine metabolites were generated in the culture media of phorbol-12-myristate-acetate-treated neutrophil-like cells in a myeloperoxidase-dependent manner. Moreover, significantly higher amounts of FAP and TSE were detected in the lung tissues of the lipopolysaccharide-treated mice compared to the controls. These findings provide not only insights into the oxidative metabolism of thiamine, but also the possibility that the oxidized thiamine metabolites may be potential biomarkers for HOCl-related oxidative stress.
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Affiliation(s)
- Hitoshi Sasatsuki
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, 464-8601, Japan
| | - Atsuo Nakazaki
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, 464-8601, Japan
| | - Koji Uchida
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan; Japan Agency for Medical Research and Development, CREST, Tokyo, Japan
| | - Takahiro Shibata
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, 464-8601, Japan; Institute of Nano-Life-Systems, Institutes of Innovation for Future Society, Nagoya University, Nagoya, 464-8601, Japan.
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22
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Bozkurt TE. Endocannabinoid System in the Airways. Molecules 2019; 24:E4626. [PMID: 31861200 PMCID: PMC6943521 DOI: 10.3390/molecules24244626] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 12/12/2019] [Accepted: 12/15/2019] [Indexed: 12/12/2022] Open
Abstract
Cannabinoids and the mammalian endocannabinoid system is an important research area of interest and attracted many researchers because of their widespread biological effects. The significant immune-modulatory role of cannabinoids has suggested their therapeutic use in several inflammatory conditions. Airways are prone to environmental irritants and stimulants, and increased inflammation is an important process in most of the respiratory diseases. Therefore, the main strategies for treating airway diseases are suppression of inflammation and producing bronchodilation. The ability of cannabinoids to induce bronchodilation and modify inflammation indicates their importance for airway physiology and pathologies. In this review, the contribution of cannabinoids and the endocannabinoid system in the airways are discussed, and the existing data for their therapeutic use in airway diseases are presented.
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Affiliation(s)
- Turgut Emrah Bozkurt
- Department of Pharmacology, Faculty of Pharmacy, Hacettepe University, Ankara 06100, Turkey
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A Novel Standardized Cannabis sativa L. Extract and Its Constituent Cannabidiol Inhibit Human Polymorphonuclear Leukocyte Functions. Int J Mol Sci 2019; 20:ijms20081833. [PMID: 31013912 PMCID: PMC6515348 DOI: 10.3390/ijms20081833] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 04/08/2019] [Accepted: 04/09/2019] [Indexed: 12/19/2022] Open
Abstract
Cannabis and cannabinoids offer significant therapeutic benefits for a wide scope of pathological conditions. Among them, the clinical issues rooted in inflammation stand out, nonetheless, the underlying mechanisms are not yet plainly understood. Circumstantial evidence points to polymorphonuclear leukocytes (PMN) as targets for the anti-inflammatory effects of cannabis. Therefore, we conducted this study to assess the effects of CM5, a novel Cannabis sativa L. extract standardized in 5% cannabidiol (CBD), on human PMN functions, including cell migration, oxidative metabolism and production of tumour necrosis factor (TNF)-α. We then sought to investigate whether such effects could be ascribed to its content in CBD. Cell migration was assessed by the Boyden chamber assay, oxidative metabolism by means of spectrofluorimetric measurement of reactive oxygen species (ROS) production, and TNF-α was measured by real time polymerase chain reaction (PCR) and enzyme-linked immunosorbent assay (ELISA). Results show that both CM5 and CBD inhibit PMN migration, ROS and TNF-α production, indicating that CBD may be the main item responsible for the effects of CM5. CM5 is however more potent than CBD on cell migration and TNF-α production, and less effective on ROS production, suggesting that beyond CBD, other components of the cannabis plant may contribute to the biological effects of the extract. As a whole, such results support the use of cannabis standardized extract and CBD to stem inflammation; however, they also warrant in-depth investigation of the underlying cellular and molecular mechanisms to better exploit their therapeutic potential.
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Kapellos TS, Taylor L, Feuerborn A, Valaris S, Hussain MT, Rainger GE, Greaves DR, Iqbal AJ. Cannabinoid receptor 2 deficiency exacerbates inflammation and neutrophil recruitment. FASEB J 2019; 33:6154-6167. [PMID: 30799631 PMCID: PMC6629158 DOI: 10.1096/fj.201802524r] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Cannabinoid receptor (CB)2 is an immune cell–localized GPCR that has been hypothesized to regulate the magnitude of inflammatory responses. However, there is currently no consensus as to the mechanism by which CB2 mediates its anti-inflammatory effects in vivo. To address this question, we employed a murine dorsal air pouch model with wild-type and CB2−/− 8–12-wk-old female and male C57BL/6 mice and found that acute neutrophil and lymphocyte antigen 6 complex, locus Chi monocyte recruitment in response to Zymosan was significantly enhanced in CB2−/− mice. Additionally, levels of matrix metalloproteinase 9 and the chemokines C-C motif chemokine ligand (CCL)2, CCL4, and C-X-C motif chemokine ligand 10 in CB2−/− pouch exudates were elevated at earlier time points. Importantly, using mixed bone marrow chimeras, we revealed that the proinflammatory phenotype in CB2−/− mice is neutrophil-intrinsic rather than stromal cell–dependent. Indeed, neutrophils isolated from CB2−/− mice exhibited an enhanced migration-related transcriptional profile and increased adhesive phenotype, and treatment of human neutrophils with a CB2 agonist blocked their endothelial transmigration. Overall, we have demonstrated that CB2 plays a nonredundant role during acute neutrophil mobilization to sites of inflammation and, as such, it could represent a therapeutic target for the development of novel anti-inflammatory compounds to treat inflammatory human diseases.—Kapellos, T. S., Taylor, L., Feuerborn, A., Valaris, S., Hussain, M. T., Rainger, G. E., Greaves, D. R., Iqbal, A. J. Cannabinoid receptor 2 deficiency exacerbates inflammation and neutrophil recruitment.
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Affiliation(s)
- Theodore S Kapellos
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Lewis Taylor
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Alexander Feuerborn
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Sophia Valaris
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Mohammed T Hussain
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - G E Rainger
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - David R Greaves
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Asif J Iqbal
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
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Wang Z, Li Y, Cai S, Li R, Cao G. Cannabinoid receptor 2 agonist attenuates blood‑brain barrier damage in a rat model of intracerebral hemorrhage by activating the Rac1 pathway. Int J Mol Med 2018; 42:2914-2922. [PMID: 30132506 DOI: 10.3892/ijmm.2018.3834] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 08/06/2018] [Indexed: 11/06/2022] Open
Abstract
Blood‑brain barrier (BBB) disruption and consequent edema formation are the most common brain injuries following intracerebral hemorrhage (ICH). Endocannabinoid receptors can alter the permeability of various epithelial barriers and have potential neuroprotective effects. The present study aimed to explore whether the selective cannabinoid receptor 2 (CNR2) agonist, JWH133, can ameliorate BBB integrity and behavioral outcome by activating Ras‑related C3 botulinum toxin substrate 1 (Rac1) following ICH. Autologous arterial blood was injected into the basal ganglia of rats to induce ICH. Animals were randomly divided into the following groups: Sham‑operated, ICH+vehicle, ICH+JWH133, ICH+JWH13+vehicle, ICH+JWH133+AM630 (a selective CNR2 antagonist), ICH+AM630, ICH+JWH133 +NSC23766 (a Rac1 antagonist) and ICH+NSC23766. JWH133 and AM630 were independently intraperitoneally administrated at 1 h prior to ICH. NSC23766 was intracerebroventricularly (ICV) administered 30 min prior to ICH. A modified Garcia test, corner test, Evans blue extravasation and brain water content analysis were performed at 24 and 72 h following ICH. Western blotting and pull‑down assays were performed at 24 h following ICH. The results demonstrated that JWH133 treatment improved neurofunctional deficits, reduced perihematomal brain edema and alleviated BBB damage at 24 and 72 h following ICH. In addition, JWH133 treatment increased the protein expression levels of guanosine‑5'‑triphosphate‑Rac1 and of the adherens junction proteins occludin, zonula occludens‑1 and claudin‑5. However, these effects were reversed by AM630 and NSC23766 treatment. In conclusion, the present findings revealed that JWH133 treatment attenuated brain injury in a rat model of ICH via activation of the Rac1 signaling pathway, thus preserving BBB integrity.
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Affiliation(s)
- Zhe Wang
- Department of Neurosurgery, Jiulongpo District People's Hospital, Chongqing 401329, P.R. China
| | - Yongfu Li
- Department of Neurosurgery, Jiulongpo District People's Hospital, Chongqing 401329, P.R. China
| | - Shuangyong Cai
- Department of Neurosurgery, Jiulongpo District People's Hospital, Chongqing 401329, P.R. China
| | - Rui Li
- Department of Neurosurgery, Jiulongpo District People's Hospital, Chongqing 401329, P.R. China
| | - Guanbo Cao
- Department of Neurosurgery, Jiulongpo District People's Hospital, Chongqing 401329, P.R. China
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Szabady RL, Louissaint C, Lubben A, Xie B, Reeksting S, Tuohy C, Demma Z, Foley SE, Faherty CS, Llanos-Chea A, Olive AJ, Mrsny RJ, McCormick BA. Intestinal P-glycoprotein exports endocannabinoids to prevent inflammation and maintain homeostasis. J Clin Invest 2018; 128:4044-4056. [PMID: 30102254 DOI: 10.1172/jci96817] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 06/19/2018] [Indexed: 01/09/2023] Open
Abstract
Neutrophil influx into the intestinal lumen is a critical response to infectious agents, but is also associated with severe intestinal damage observed in idiopathic inflammatory bowel disease. The chemoattractant hepoxilin A3, an eicosanoid secreted from intestinal epithelial cells by the apically restricted efflux pump multidrug resistance protein 2 (MRP2), mediates this neutrophil influx. Information about a possible counterbalance pathway that could signal the lack of or resolution of an apical inflammatory signal, however, has yet to be described. We now report a system with such hallmarks. Specifically, we identify endocannabinoids as the first known endogenous substrates of the apically restricted multidrug resistance transporter P-glycoprotein (P-gp) and reveal a mechanism, which we believe is novel, for endocannabinoid secretion into the intestinal lumen. Knockdown or inhibition of P-gp reduced luminal secretion levels of N-acyl ethanolamine-type endocannabinoids, which correlated with increased neutrophil transmigration in vitro and in vivo. Additionally, loss of CB2, the peripheral cannabinoid receptor, led to increased pathology and neutrophil influx in models of acute intestinal inflammation. These results define a key role for epithelial cells in balancing the constitutive secretion of antiinflammatory lipids with the stimulated secretion of proinflammatory lipids via surface efflux pumps in order to control neutrophil infiltration into the intestinal lumen and maintain homeostasis in the healthy intestine.
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Affiliation(s)
- Rose L Szabady
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Christopher Louissaint
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Anneke Lubben
- Department of Pharmacy and Pharmacology, University of Bath, Bath, United Kingdom
| | - Bailu Xie
- Department of Pharmacy and Pharmacology, University of Bath, Bath, United Kingdom
| | - Shaun Reeksting
- Department of Pharmacy and Pharmacology, University of Bath, Bath, United Kingdom
| | - Christine Tuohy
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Zachary Demma
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Sage E Foley
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Christina S Faherty
- Mucosal Immunology and Biology Research Center, Division of Pediatric Gastroenterology and Nutrition, Massachusetts General Hospital and Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Alejandro Llanos-Chea
- Mucosal Immunology and Biology Research Center, Division of Pediatric Gastroenterology and Nutrition, Massachusetts General Hospital and Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Andrew J Olive
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Randall J Mrsny
- Department of Pharmacy and Pharmacology, University of Bath, Bath, United Kingdom
| | - Beth A McCormick
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, USA
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Tahamtan A, Samieipoor Y, Nayeri FS, Rahbarimanesh AA, Izadi A, Rashidi-Nezhad A, Tavakoli-Yaraki M, Farahmand M, Bont L, Shokri F, Mokhatri-Azad T, Salimi V. Effects of cannabinoid receptor type 2 in respiratory syncytial virus infection in human subjects and mice. Virulence 2017; 9:217-230. [PMID: 28992427 PMCID: PMC5955186 DOI: 10.1080/21505594.2017.1389369] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
An accumulating body of evidence suggests that the endocannabinoid system plays a significant role in pathophysiological processes and impacts disease severity. Here we investigate the possible role of a cannabinoid receptor type 2 (CB2) functional variant in determining disease severity and the potential pharmacological therapeutic effects of CB2 activation in viral respiratory infection. The common missense variant (CAA/CGG; Q63R) of the gene-encoding CB2 receptor (CNR2) was evaluated in 90 inpatient and 90 outpatient children with acute respiratory tract infection (ARTI). The frequency distribution of respiratory syncytial virus (RSV)-the main cause of severe cases of bronchiolitis and pneumonia in children-was studied in all collected samples. The mechanism through which CB2 affects clinical outcomes in case of RSV infection was studied in Balb/c mice model using AM630 as a CB2 antagonist. The potential therapeutic effect of CB2 activation during RSV infection was studied using a selective agonist, JWH133. The CB2 Q63R variation was associated with increased risk of hospitalization in children with ARTI. Children carrying the QQ genotype were more prone to developing severe ARTI (OR = 3.275, 95% CI: 1.221–8.705; p = 0.019). Of all the children enrolled in the study, 83 patients (46.1%) were found positive for RSV infection. The associated risk of developing severe ARTI following RSV infection increased more than two-fold in children carrying the Q allele (OR = 2.148, 95% CI: 1.092–4.224; p = 0.026). In mice, the blockade of CB2 by AM630 during RSV infection enhanced the influx of BAL cells and production of cytokines/chemokines while exaggerating lung pathology. CB2 activation by JWH133 reduces the influx of BAL cells and production of cytokines/chemokines while alleviating lung pathology. Collectively, CB2 is associated with RSV severity during infancy and may serve as a therapeutic target in RSV infection through the alleviation of virus-associated immunopathology.
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Affiliation(s)
- Alireza Tahamtan
- a Department of Virology , School of Public Health, Tehran University of Medical Sciences , Tehran , Iran
| | - Yazdan Samieipoor
- a Department of Virology , School of Public Health, Tehran University of Medical Sciences , Tehran , Iran
| | - Fatemeh Sadat Nayeri
- b Fetal and Neonatal Research Center , Tehran University of Medical Sciences , Tehran , Iran
| | | | - Anahita Izadi
- c Bahrami Children Hospital , Tehran University of Medical Sciences , Tehran , Iran
| | - Ali Rashidi-Nezhad
- d Maternal, Fetal and Neonatal Research Center , Tehran University of Medical Sciences , Tehran , Iran
| | | | - Mohammad Farahmand
- a Department of Virology , School of Public Health, Tehran University of Medical Sciences , Tehran , Iran
| | - Louis Bont
- f University Medical Center Utrecht (UMCU), Wilhelmina Children's Hospital (WKZ) , Department of Pediatrics , Utrecht , The Netherlands
| | - Fazel Shokri
- g Department of Immunology , School of Public Health, Tehran University of Medical Sciences , Tehran , Iran
| | - Talat Mokhatri-Azad
- a Department of Virology , School of Public Health, Tehran University of Medical Sciences , Tehran , Iran
| | - Vahid Salimi
- a Department of Virology , School of Public Health, Tehran University of Medical Sciences , Tehran , Iran
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Cannabinoid Receptor 2 Modulates Neutrophil Recruitment in a Murine Model of Endotoxemia. Mediators Inflamm 2017; 2017:4315412. [PMID: 28852269 PMCID: PMC5567445 DOI: 10.1155/2017/4315412] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 06/02/2017] [Accepted: 06/07/2017] [Indexed: 12/25/2022] Open
Abstract
The endocannabinoid system consists of endogenous lipid mediators and cannabinoid receptors (CB) 1 and 2. It has previously been demonstrated that activation of the leukocyte-expressed CB2 has anti-inflammatory effects in vivo. Here, we report its role under baseline conditions and in a model of low-dose endotoxemia by comparing CB2 knockout to littermate control mice. CB2-deficient mice displayed significantly more neutrophils and fewer monocytes in the bone marrow under steady state. In initial validation experiments, administration of 1 mg/kg LPS to male C57BL/6J mice was shown to transiently upregulate systemic proinflammatory mediators (peaked at 2 hours) and mobilise bone marrow neutrophils and monocytes into circulation. In CB2 knockout mice, the level of the metalloproteinase MMP-9 was significantly elevated by 2 hours and we also observed augmented recruitment of neutrophils to the spleen in addition to increased levels of Ccl2, Ccl3, Cxcl10, and Il6. Collectively, our data show that the absence of CB2 receptor increases the levels of innate immune cell populations in the bone marrow under steady state. Furthermore, during an acute systemic inflammatory insult, we observe a highly reproducible and site-specific increase in neutrophil recruitment and proinflammatory chemokine expression in the spleen of CB2 knockout mice.
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Effects of chronic Δ 9-tetrahydrocannabinol treatment on Rho/Rho-kinase signalization pathway in mouse brain. Saudi Pharm J 2017; 25:1078-1081. [PMID: 29158718 PMCID: PMC5681306 DOI: 10.1016/j.jsps.2017.05.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 05/10/2017] [Indexed: 11/11/2022] Open
Abstract
Δ9-Tetrahydrocannabinol (Δ9-THC) shows its effects by activating cannabinoid receptors which are on some tissues and neurons. Cannabinoid systems have role on cell proliferation and development of neurons. Furthermore, it is interesting that cannabinoid system and rho/rho-kinase signalization pathway, which have important role on cell development and proliferation, may have role on neuron proliferation and development together. Thus, a study is planned to investigate rhoA and rho-kinase enzyme expressions and their activities in the brain of chronic Δ9-THC treated mice. One group of mice are treated with Δ9-THC once to see effects of acute treatment. Another group of mice are treated with Δ9-THC three times per day for one month. After this period, rhoA and rho-kinase enzyme expressions and their activities in mice brains are analyzed by ELISA method. Chronic administration of Δ9-THC decreased the expression of rhoA while acute treatment has no meaningful effect on it. Administration of Δ9-THC did not affect expression of rho-kinase on both chronic and acute treatment. Administration of Δ9-THC increased rho-kinase activity on both chronic and acute treatment, however, chronic treatment decreased its activity with respect to acute treatment. This study showed that chronic Δ9-THC treatment down-regulated rhoA expression and did not change the expression level of rho-kinase which is downstream effector of rhoA. However, it elevated the rho-kinase activity. Δ9-THC induced down-regulation of rhoA may cause elevation of cypin expression and may have benefit on cypin related diseases. Furthermore, use of rho-kinase inhibitors and Δ9-THC together can be useful on rho-kinase related diseases.
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Kelly MEM, Lehmann C, Zhou J. The Endocannabinoid System in Local and Systemic Inflammation. ACTA ACUST UNITED AC 2017. [DOI: 10.4199/c00151ed1v01y201702isp074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Thames AD, Kuhn TP, Williamson TJ, Jones JD, Mahmood Z, Hammond A. Marijuana effects on changes in brain structure and cognitive function among HIV+ and HIV- adults. Drug Alcohol Depend 2017; 170:120-127. [PMID: 27889592 PMCID: PMC5240153 DOI: 10.1016/j.drugalcdep.2016.11.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Revised: 11/08/2016] [Accepted: 11/09/2016] [Indexed: 01/16/2023]
Abstract
BACKGROUND The current study examined the independent and interactive effects of HIV and marijuana (MJ) use on brain structure and cognitive function among a sample of HIV-positive (HIV+) and HIV-negative (HIV-) individuals. METHODS Participants (HIV+, n=48; HIV-, n=29) individuals underwent cognitive testing, questionnaires about substance use, and brain MRI. The HIV+ group was clinically stable based upon current plasma CD4 count, 50% had undetectable viral load (i.e.,<20 copies/mL), and all were on a stable regimen of cART. RESULTS For HIV+ and HIV- participants, higher levels of MJ use were associated with smaller volumes in the entorhinal cortex and fusiform gyrus. HIV status (but not MJ use) was associated with cingulate thickness, such that HIV+ participants evidenced smaller thickness of the cingulate, as compared to HIV- controls. Regarding neurocognitive functioning, there was a HIV*MJ interactive effect on global cognition, such that when the amount of MJ use was less than 1.43g per week, the HIV- group displayed significantly better neurocognitive performance than the HIV+ group (t=3.14, p=0.002). However, when MJ use reached 1.43g per week, there were no significant HIV group differences in global cognitive performance (t=1.39, p=0.168). CONCLUSIONS Our results show independent and interactive effects of HIV and MJ on brain structure and cognition. However, our results do not support that HIV+ MJ users are at greater risk for adverse brain or cognitive outcomes compared to HIV- MJ users.
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Affiliation(s)
- April D Thames
- Department of Psychiatry and Biobehavioral Sciences, University of California Los Angeles, 740 Westwood Plaza 28-263, Los Angeles, CA 90095, USA.
| | - Taylor P Kuhn
- Department of Psychiatry and Biobehavioral Sciences, University of California Los Angeles, 740 Westwood Plaza 28-263, Los Angeles, CA 90095, USA
| | - Timothy J Williamson
- Department of Psychology, University of California Los Angeles, Franz Hall, 502 Portola Plaza, Los Angeles, CA 90095, USA
| | - Jacob D Jones
- Department of Psychiatry and Biobehavioral Sciences, University of California Los Angeles, 740 Westwood Plaza 28-263, Los Angeles, CA 90095, USA
| | - Zanjbeel Mahmood
- Department of Psychiatry and Biobehavioral Sciences, University of California Los Angeles, 740 Westwood Plaza 28-263, Los Angeles, CA 90095, USA
| | - Andrea Hammond
- Department of Psychiatry and Biobehavioral Sciences, University of California Los Angeles, 740 Westwood Plaza 28-263, Los Angeles, CA 90095, USA; Department of Psychology, California State University, Northridge, 18111 Nordhoff Street, Northridge, CA 91330, USA
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Turcotte C, Blanchet MR, Laviolette M, Flamand N. The CB 2 receptor and its role as a regulator of inflammation. Cell Mol Life Sci 2016; 73:4449-4470. [PMID: 27402121 PMCID: PMC5075023 DOI: 10.1007/s00018-016-2300-4] [Citation(s) in RCA: 344] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 06/20/2016] [Accepted: 06/27/2016] [Indexed: 12/12/2022]
Abstract
The CB2 receptor is the peripheral receptor for cannabinoids. It is mainly expressed in immune tissues, highlighting the possibility that the endocannabinoid system has an immunomodulatory role. In this respect, the CB2 receptor was shown to modulate immune cell functions, both in cellulo and in animal models of inflammatory diseases. In this regard, numerous studies have reported that mice lacking the CB2 receptor have an exacerbated inflammatory phenotype. This suggests that therapeutic strategies aiming at modulating CB2 signaling could be promising for the treatment of various inflammatory conditions. Herein, we review the pharmacology of the CB2 receptor, its expression pattern, and the signaling pathways induced by its activation. We next examine the regulation of immune cell functions by the CB2 receptor and the evidence obtained from primary human cells, immortalized cell lines, and animal models of inflammation. Finally, we discuss the possible therapies targeting the CB2 receptor and the questions that remain to be addressed to determine whether this receptor could be a potential target to treat inflammatory disease.
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Affiliation(s)
- Caroline Turcotte
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Département de médecine, Faculté de médecine, Université Laval, Quebec, QC, G1V 4G5, Canada
| | - Marie-Renée Blanchet
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Département de médecine, Faculté de médecine, Université Laval, Quebec, QC, G1V 4G5, Canada
| | - Michel Laviolette
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Département de médecine, Faculté de médecine, Université Laval, Quebec, QC, G1V 4G5, Canada
| | - Nicolas Flamand
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Département de médecine, Faculté de médecine, Université Laval, Quebec, QC, G1V 4G5, Canada.
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Fung S, Xu C, Hamel E, Wager-Miller JB, Woodruff G, Miller A, Sanford C, Mackie K, Stella N. Novel indole-based compounds that differentiate alkylindole-sensitive receptors from cannabinoid receptors and microtubules: Characterization of their activity on glioma cell migration. Pharmacol Res 2016; 115:233-241. [PMID: 27832960 DOI: 10.1016/j.phrs.2016.10.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 10/27/2016] [Accepted: 10/28/2016] [Indexed: 02/07/2023]
Abstract
Indole-based compounds, such as the alkyl-indole (AI) compound WIN55212-2, activate the cannabinoid receptors, CB1 and CB2, two well-characterized G protein-coupled receptors (GPCR). Reports indicate that several indole-based cannabinoid agonists, including WIN55212-2, lack selectivity and interact with at least two additional targets: AI-sensitive GPCRs and microtubules. Studying how indole-based compounds modulate the activity of these 4 targets has been difficult as selective chemical tools were not available. Here we report the pharmacological characterization of six newly-developed indole-based compounds (ST-11, ST-23, ST-25, ST-29, ST-47 and ST-48) that exhibit distinct binding affinities at AI-sensitive receptors, cannabinoid CB1 and CB2 receptors and the colchicine site of tubulin. Several compounds exhibit some level of selectivity for AI-sensitive receptors, including ST-11 that binds AI-sensitive receptors with a Kd of 52nM and appears to have a weaker affinity for the colchicine site of tubulin (Kd=3.2μM) and does not bind CB1/CB2 receptors. Leveraging these characteristics, we show that activation of AI-sensitive receptors with ST-11 inhibits both the basal and stimulated migration of the Delayed Brain Tumor (DBT) mouse glioma cell line. Our study describes a new series of indole-based compounds that enable the pharmacological and functional differentiation of alkylindole-sensitive receptors from cannabinoid receptors and microtubules.
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Affiliation(s)
- Susan Fung
- Department of Pharmacology, University of Washington, 1959 NE Pacific Way, Seattle, WA, United States; Graduate Program in Neurobiology and Behavior, University of Washington, 1959 NE Pacific St., Seattle, WA, United States
| | - Cong Xu
- Department of Pharmacology, University of Washington, 1959 NE Pacific Way, Seattle, WA, United States
| | - Ernest Hamel
- Screening Technologies Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick National Laboratory for Cancer Research, National Institutes of Health, Frederick, MD 21702, United States
| | - James B Wager-Miller
- Department of Psychiatry and Behavioral Sciences, University of Washington, 1959 NE Pacific Way, Seattle, WA, United States
| | - Grace Woodruff
- Department of Pharmacology, University of Washington, 1959 NE Pacific Way, Seattle, WA, United States
| | - Aaron Miller
- Department of Pharmacology, University of Washington, 1959 NE Pacific Way, Seattle, WA, United States
| | - Christina Sanford
- Department of Pharmacology, University of Washington, 1959 NE Pacific Way, Seattle, WA, United States
| | - Ken Mackie
- Department of Psychiatry and Behavioral Sciences, University of Washington, 1959 NE Pacific Way, Seattle, WA, United States
| | - Nephi Stella
- Department of Pharmacology, University of Washington, 1959 NE Pacific Way, Seattle, WA, United States; Department of Psychological and Brain Sciences, Indiana University, 702 N. Walnut Grove Ave, Bloomington, IN 47405, United States.
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Turcotte C, Blanchet MR, Laviolette M, Flamand N. Impact of Cannabis, Cannabinoids, and Endocannabinoids in the Lungs. Front Pharmacol 2016; 7:317. [PMID: 27695418 PMCID: PMC5023687 DOI: 10.3389/fphar.2016.00317] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 09/02/2016] [Indexed: 01/09/2023] Open
Abstract
Since the identification of cannabinoid receptors in the 1990s, a research field has been dedicated to exploring the role of the cannabinoid system in immunity and the inflammatory response in human tissues and animal models. Although the cannabinoid system is present and crucial in many human tissues, studying the impact of cannabinoids on the lungs is particularly relevant because of their contact with exogenous cannabinoids in the context of marijuana consumption. In the past two decades, the scientific community has gathered a large body of evidence supporting that the activation of the cannabinoid system alleviates pain and reduces inflammation. In the context of lung inflammation, exogenous and endogenous cannabinoids have shown therapeutic potential because of their inhibitory effects on immune cell recruitment and functions. On the other hand, cannabinoids were shown to be deleterious to lung function and to impact respiratory pathogen clearance. In this review, we present the existing data on the regulation of lung immunity and inflammation by phytocannabinoids, synthetic cannabinoids and endocannabinoids.
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Affiliation(s)
- Caroline Turcotte
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Département de Médecine, Faculté de Médecine, Université Laval, Québec City, QC Canada
| | - Marie-Renée Blanchet
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Département de Médecine, Faculté de Médecine, Université Laval, Québec City, QC Canada
| | - Michel Laviolette
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Département de Médecine, Faculté de Médecine, Université Laval, Québec City, QC Canada
| | - Nicolas Flamand
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Département de Médecine, Faculté de Médecine, Université Laval, Québec City, QC Canada
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Andrade-Silva M, Correa LB, Candéa ALP, Cavalher-Machado SC, Barbosa HS, Rosas EC, Henriques MG. The cannabinoid 2 receptor agonist β-caryophyllene modulates the inflammatory reaction induced by Mycobacterium bovis BCG by inhibiting neutrophil migration. Inflamm Res 2016; 65:869-879. [PMID: 27379721 DOI: 10.1007/s00011-016-0969-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 06/17/2016] [Accepted: 06/21/2016] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVE AND DESIGN β-Caryophyllene (BCP) is a sesquiterpene that binds to the cannabinoid 2 (CB2) receptor and exerts anti-inflammatory effects. In this study, we investigated the anti-inflammatory effect of BCP and another CB2 agonist, GP1a in inflammatory experimental model induced by Mycobacterium bovis (BCG). METHODS C57Bl/6 mice were pretreated orally with BCP (0.5-50 mg/kg) or intraperitonealy with GP1a (10 mg/kg) 1 h before the induction of pleurisy or pulmonary inflammation by BCG. The direct action of CB2 agonists on neutrophils function was evaluated in vitro. RESULTS β-Caryophyllene (50 mg/kg) impaired BCG-induced neutrophil accumulation in pleurisy without affecting mononuclear cells or the production of TNF-α and CCL2/MCP-1. However, BCP inhibited CXCL1/KC, leukotriene B4 (LTB4), IL-12, and nitric oxide production. GP1a had a similar effect to BCP. Preincubation of neutrophils with BCP (10 µM) impaired chemotaxis toward LTB4 and adhesion to endothelial cells stimulated with TNF-α, and both, BCP and GP1a, impaired LTB4-induced actin polymerization. CONCLUSION These results suggest that the CB2 receptor may represent a new target for modulating the inflammatory reaction induced by mycobacteria.
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Affiliation(s)
- Magaiver Andrade-Silva
- Laboratório de Farmacologia Aplicada, Instituto de Tecnologia em Fármacos-Farmanguinhos, Fundação Oswaldo Cruz, Rua Sizenando Nabuco 100, Manguinhos, Rio de Janeiro, RJ, 21041-250, Brasil.,Instituto Nacional de Ciência e Tecnologia de Inovação em Doenças de Populações Negligenciadas (INCT-IDPN), Rio de Janeiro, RJ, Brasil
| | - Luana Barbosa Correa
- Laboratório de Farmacologia Aplicada, Instituto de Tecnologia em Fármacos-Farmanguinhos, Fundação Oswaldo Cruz, Rua Sizenando Nabuco 100, Manguinhos, Rio de Janeiro, RJ, 21041-250, Brasil.,Instituto Nacional de Ciência e Tecnologia de Inovação em Doenças de Populações Negligenciadas (INCT-IDPN), Rio de Janeiro, RJ, Brasil
| | - André Luis Peixoto Candéa
- Laboratório de Farmacologia Aplicada, Instituto de Tecnologia em Fármacos-Farmanguinhos, Fundação Oswaldo Cruz, Rua Sizenando Nabuco 100, Manguinhos, Rio de Janeiro, RJ, 21041-250, Brasil.,Instituto Nacional de Ciência e Tecnologia de Inovação em Doenças de Populações Negligenciadas (INCT-IDPN), Rio de Janeiro, RJ, Brasil
| | - Simone C Cavalher-Machado
- Laboratório de Farmacologia Aplicada, Instituto de Tecnologia em Fármacos-Farmanguinhos, Fundação Oswaldo Cruz, Rua Sizenando Nabuco 100, Manguinhos, Rio de Janeiro, RJ, 21041-250, Brasil
| | - Helene Santos Barbosa
- Laboratório de Biologia Estrutural, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil 4365, Manguinhos, Rio de Janeiro, RJ, 21040-361, Brasil
| | - Elaine Cruz Rosas
- Laboratório de Farmacologia Aplicada, Instituto de Tecnologia em Fármacos-Farmanguinhos, Fundação Oswaldo Cruz, Rua Sizenando Nabuco 100, Manguinhos, Rio de Janeiro, RJ, 21041-250, Brasil.,Instituto Nacional de Ciência e Tecnologia de Inovação em Doenças de Populações Negligenciadas (INCT-IDPN), Rio de Janeiro, RJ, Brasil
| | - Maria G Henriques
- Laboratório de Farmacologia Aplicada, Instituto de Tecnologia em Fármacos-Farmanguinhos, Fundação Oswaldo Cruz, Rua Sizenando Nabuco 100, Manguinhos, Rio de Janeiro, RJ, 21041-250, Brasil. .,Instituto Nacional de Ciência e Tecnologia de Inovação em Doenças de Populações Negligenciadas (INCT-IDPN), Rio de Janeiro, RJ, Brasil. .,Centro de Desenvolvimento Tecnológico em Saúde (CDTS), Av. Brasil 4365, Rio de Janeiro, RJ, 21040-361, Brasil.
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Frei RB, Luschnig P, Parzmair GP, Peinhaupt M, Schranz S, Fauland A, Wheelock CE, Heinemann A, Sturm EM. Cannabinoid receptor 2 augments eosinophil responsiveness and aggravates allergen-induced pulmonary inflammation in mice. Allergy 2016; 71:944-56. [PMID: 26850094 PMCID: PMC5225803 DOI: 10.1111/all.12858] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/01/2016] [Indexed: 01/09/2023]
Abstract
Background Accumulation of activated eosinophils in tissue is a hallmark of allergic inflammation. The endocannabinoid 2‐arachidonoylglycerol (2‐AG) has been proposed to elicit eosinophil migration in a CB2 receptor/Gi/o‐dependent manner. However, it has been claimed recently that this process may also involve other mechanisms such as cytokine priming and the metabolism of 2‐AG into eicosanoids. Here, we explored the direct contribution of specific CB2 receptor activation to human and mouse eosinophil effector function in vitro and in vivo. Methods In vitro studies including CB2 expression, adhesion and migratory responsiveness, respiratory burst, degranulation, and calcium mobilization were conducted in human peripheral blood eosinophils and mouse bone marrow‐derived eosinophils. Allergic airway inflammation was assessed in mouse models of acute OVA‐induced asthma and directed eosinophil migration. Results CB2 expression was significantly higher in eosinophils from symptomatic allergic donors. The selective CB2 receptor agonist JWH‐133 induced a moderate migratory response in eosinophils. However, short‐term exposure to JWH‐133 potently enhanced chemoattractant‐induced eosinophil shape change, chemotaxis, CD11b surface expression, and adhesion as well as production of reactive oxygen species. Receptor specificity of the observed effects was confirmed in eosinophils from CB2 knockout mice and by using the selective CB2 antagonist SR144528. Of note, systemic application of JWH‐133 clearly primed eosinophil‐directed migration in vivo and aggravated both AHR and eosinophil influx into the airways in a CB2‐specific manner. This effect was completely absent in eosinophil‐deficient ∆dblGATA mice. Conclusion Our data indicate that CB2 may directly contribute to the pathogenesis of eosinophil‐driven diseases. Moreover, we provide new insights into the molecular mechanisms underlying the CB2‐mediated priming of eosinophils. Hence, antagonism of CB2 receptors may represent a novel pharmacological approach for the treatment of allergic inflammation and other eosinophilic disorders.
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Affiliation(s)
- R. B. Frei
- Institute of Experimental and Clinical Pharmacology Medical University of Graz Graz Austria
| | - P. Luschnig
- Institute of Experimental and Clinical Pharmacology Medical University of Graz Graz Austria
| | - G. P. Parzmair
- Institute of Experimental and Clinical Pharmacology Medical University of Graz Graz Austria
| | - M. Peinhaupt
- Institute of Experimental and Clinical Pharmacology Medical University of Graz Graz Austria
| | - S. Schranz
- Institute of Experimental and Clinical Pharmacology Medical University of Graz Graz Austria
| | - A. Fauland
- Division of Physiological Chemistry II Department of Medical Biochemistry and Biophysics Karolinska Institutet Stockholm Sweden
| | - C. E. Wheelock
- Division of Physiological Chemistry II Department of Medical Biochemistry and Biophysics Karolinska Institutet Stockholm Sweden
| | - A. Heinemann
- Institute of Experimental and Clinical Pharmacology Medical University of Graz Graz Austria
| | - E. M. Sturm
- Institute of Experimental and Clinical Pharmacology Medical University of Graz Graz Austria
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Abstract
Over the last 10 years, a great boost of knowledge accumulated on the immunomodulatory and anti-inflammatory properties of endocannabinoids (eCBs). In this scenario, these bioactive lipids, which are produced by most immune cells along with a set of receptors and enzymes that regulate their synthesis and degradation, act as secondary modulators and increase or decrease a plethora of immune functions. In this review, the manifold immunomodulatory effects of the main eCBs in different compartments of innate and adaptive immunity will be discussed, suggesting that they could be considered as master regulators of innate-adaptive immune axis and as potent immunoresolvents.
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Affiliation(s)
- Valerio Chiurchiù
- School of Medicine and Center of Integrated Research, Campus Bio-Medico University of Rome, Rome, Italy.,European Center for Brain Research (CERC), I.R.C.C.S. Santa Lucia Foundation, Rome, Italy
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Aghazadeh Tabrizi M, Baraldi PG, Borea PA, Varani K. Medicinal Chemistry, Pharmacology, and Potential Therapeutic Benefits of Cannabinoid CB2 Receptor Agonists. Chem Rev 2016; 116:519-60. [PMID: 26741146 DOI: 10.1021/acs.chemrev.5b00411] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Mojgan Aghazadeh Tabrizi
- Department of Chemical and Pharmaceutical Sciences and ‡Department of Medical Science, Pharmacology Section, University of Ferrara , Ferrara 44121, Italy
| | - Pier Giovanni Baraldi
- Department of Chemical and Pharmaceutical Sciences and ‡Department of Medical Science, Pharmacology Section, University of Ferrara , Ferrara 44121, Italy
| | - Pier Andrea Borea
- Department of Chemical and Pharmaceutical Sciences and ‡Department of Medical Science, Pharmacology Section, University of Ferrara , Ferrara 44121, Italy
| | - Katia Varani
- Department of Chemical and Pharmaceutical Sciences and ‡Department of Medical Science, Pharmacology Section, University of Ferrara , Ferrara 44121, Italy
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Ligand activation of cannabinoid receptors attenuates hypertrophy of neonatal rat cardiomyocytes. J Cardiovasc Pharmacol 2015; 64:420-30. [PMID: 24979612 DOI: 10.1097/fjc.0000000000000134] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
: Endocannabinoids are bioactive amides, esters, and ethers of long-chain polyunsaturated fatty acids. Evidence suggests that activation of the endocannabinoid pathway offers cardioprotection against myocardial ischemia, arrhythmias, and endothelial dysfunction of coronary arteries. As cardiac hypertrophy is a convergence point of risk factors for heart failure, we determined a role for endocannabinoids in attenuating endothelin-1-induced hypertrophy and probed the signaling pathways involved. The cannabinoid receptor ligand anandamide and its metabolically stable analog, R-methanandamide, suppressed hypertrophic indicators including cardiomyocyte enlargement and fetal gene activation (ie, the brain natriuretic peptide gene) elicited by endothelin-1 in isolated neonatal rat ventricular myocytes. The ability of R-methanandamide to suppress myocyte enlargement and fetal gene activation was mediated by CB2 and CB1 receptors, respectively. Accordingly, a CB2-selective agonist, JWH-133, prevented only myocyte enlargement but not brain natriuretic peptide gene activation. A CB1/CB2 dual agonist with limited brain penetration, CB-13, inhibited both hypertrophic indicators. CB-13 activated AMP-activated protein kinase (AMPK) and, in an AMPK-dependent manner, endothelial nitric oxide synthase (eNOS). Disruption of AMPK signaling, using compound C or short hairpinRNA knockdown, and eNOS inhibition using L-NIO abolished the antihypertrophic actions of CB-13. In conclusion, CB-13 inhibits cardiomyocyte hypertrophy through AMPK-eNOS signaling and may represent a novel therapeutic approach to cardioprotection.
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Tahamtan A, Tavakoli-Yaraki M, Rygiel TP, Mokhtari-Azad T, Salimi V. Effects of cannabinoids and their receptors on viral infections. J Med Virol 2015; 88:1-12. [DOI: 10.1002/jmv.24292] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/01/2015] [Indexed: 12/14/2022]
Affiliation(s)
- Alireza Tahamtan
- Departmentof Virology; School of Public Health; Tehran University of Medical Sciences; Tehran Iran
| | - Masoumeh Tavakoli-Yaraki
- Department of Biochemistry; Faculty of Medicine; Iran University of Medical Sciences; Tehran Iran
| | - Tomasz P. Rygiel
- Department of Immunology; Medical University of Warsaw; Center of Biostructure Research; Warsaw Poland
| | - Talat Mokhtari-Azad
- Departmentof Virology; School of Public Health; Tehran University of Medical Sciences; Tehran Iran
| | - Vahid Salimi
- Departmentof Virology; School of Public Health; Tehran University of Medical Sciences; Tehran Iran
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Turcotte C, Chouinard F, Lefebvre JS, Flamand N. Regulation of inflammation by cannabinoids, the endocannabinoids 2-arachidonoyl-glycerol and arachidonoyl-ethanolamide, and their metabolites. J Leukoc Biol 2015; 97:1049-70. [PMID: 25877930 DOI: 10.1189/jlb.3ru0115-021r] [Citation(s) in RCA: 155] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 02/28/2015] [Indexed: 12/26/2022] Open
Abstract
2-Arachidonoyl-glycerol (2-AG) and arachidonyl-ethanolamide (AEA) are endocannabinoids that have been implicated in many physiologic disorders, including obesity, metabolic syndromes, hepatic diseases, pain, neurologic disorders, and inflammation. Their immunomodulatory effects are numerous and are not always mediated by cannabinoid receptors, reflecting the presence of an arachidonic acid (AA) molecule in their structure, the latter being the precursor of numerous bioactive lipids that are pro- or anti-inflammatory. 2-AG and AEA can thus serve as a source of AA but can also be metabolized by most eicosanoid biosynthetic enzymes, yielding additional lipids. In this regard, enhancing endocannabinoid levels by using endocannabinoid hydrolysis inhibitors is likely to augment the levels of these lipids that could regulate inflammatory cell functions. This review summarizes the metabolic pathways involved in the biosynthesis and metabolism of AEA and 2-AG, as well as the biologic effects of the 2-AG and AEA lipidomes in the regulation of inflammation.
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Affiliation(s)
- Caroline Turcotte
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec (IUCPQ), Département de Médecine, Faculté de Médecine, Université Laval, Québec City, QC, Canada
| | - François Chouinard
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec (IUCPQ), Département de Médecine, Faculté de Médecine, Université Laval, Québec City, QC, Canada
| | - Julie S Lefebvre
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec (IUCPQ), Département de Médecine, Faculté de Médecine, Université Laval, Québec City, QC, Canada
| | - Nicolas Flamand
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec (IUCPQ), Département de Médecine, Faculté de Médecine, Université Laval, Québec City, QC, Canada
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Chiurchiù V, Battistini L, Maccarrone M. Endocannabinoid signalling in innate and adaptive immunity. Immunology 2015; 144:352-364. [PMID: 25585882 DOI: 10.1111/imm.12441] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 12/23/2014] [Accepted: 01/05/2015] [Indexed: 12/11/2022] Open
Abstract
The immune system can be modulated and regulated not only by foreign antigens but also by other humoral factors and metabolic products, which are able to affect several quantitative and qualitative aspects of immunity. Among these, endocannabinoids are a group of bioactive lipids that might serve as secondary modulators, which when mobilized coincident with or shortly after first-line immune modulators, increase or decrease many immune functions. Most immune cells express these bioactive lipids, together with their set of receptors and of enzymes regulating their synthesis and degradation. In this review, a synopsis of the manifold immunomodulatory effects of endocannabinoids and their signalling in the different cell populations of innate and adaptive immunity is appointed, with a particular distinction between mice and human immune system compartments.
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Affiliation(s)
- Valerio Chiurchiù
- European Centre for Brain Research (CERC), I.R.C.C.S. Santa Lucia Foundation, Rome, Italy
| | - Luca Battistini
- European Centre for Brain Research (CERC), I.R.C.C.S. Santa Lucia Foundation, Rome, Italy
| | - Mauro Maccarrone
- European Centre for Brain Research (CERC), I.R.C.C.S. Santa Lucia Foundation, Rome, Italy.,Centre of Integrated Research, Campus Bio-Medico University of Rome, Rome, Italy
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Cabral GA, Ferreira GA, Jamerson MJ. Endocannabinoids and the Immune System in Health and Disease. Handb Exp Pharmacol 2015; 231:185-211. [PMID: 26408161 DOI: 10.1007/978-3-319-20825-1_6] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Endocannabinoids are bioactive lipids that have the potential to signal through cannabinoid receptors to modulate the functional activities of a variety of immune cells. Their activation of these seven-transmembranal, G protein-coupled receptors sets in motion a series of signal transductional events that converge at the transcriptional level to regulate cell migration and the production of cytokines and chemokines. There is a large body of data that supports a functional relevance for 2-arachidonoylglycerol (2-AG) as acting through the cannabinoid receptor type 2 (CB2R) to inhibit migratory activities for a diverse array of immune cell types. However, unequivocal data that supports a functional linkage of anandamide (AEA) to a cannabinoid receptor in immune modulation remains to be obtained. Endocannabinoids, as typical bioactive lipids, have a short half-life and appear to act in an autocrine and paracrine fashion. Their immediate effective action on immune function may be at localized sites in the periphery and within the central nervous system. It is speculated that endocannabinoids play an important role in maintaining the overall "fine-tuning" of the immune homeostatic balance within the host.
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Affiliation(s)
- Guy A Cabral
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA.
| | - Gabriela A Ferreira
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA
| | - Melissa J Jamerson
- Department of Clinical Laboratory Sciences, Virginia Commonwealth University, Richmond, VA, USA
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Fichna J, Bawa M, Thakur GA, Tichkule R, Makriyannis A, McCafferty DM, Sharkey KA, Storr M. Cannabinoids alleviate experimentally induced intestinal inflammation by acting at central and peripheral receptors. PLoS One 2014; 9:e109115. [PMID: 25275313 PMCID: PMC4183544 DOI: 10.1371/journal.pone.0109115] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2014] [Accepted: 09/08/2014] [Indexed: 01/27/2023] Open
Abstract
Background and Aims In an attempt to further investigate the role of cannabinoid (CB) system in the pathogenesis of inflammatory bowel diseases, we employed two recently developed ligands, AM841 (a covalently acting CB agonist) and CB13 (a peripherally-restricted CB agonist) to establish whether central and peripheral CB sites are involved in the anti-inflammatory action in the intestine. Methods and Results AM841 (0.01, 0.1 and 1 mg/kg, i.p.) significantly decreased inflammation scores in dextran sulfate sodium (DSS)- and 2,4,6-trinitrobenzene sulfonic acid (TNBS)-treated mice when administered before induction of colitis or as a treatment of existing intestinal inflammation. The effect was absent in CB1, CB2 and CB1/2-deficient mice. A peripherally-restricted agonist CB13 did not alleviate colitis when given i.p. (0.1 mg/kg), but significantly decreased inflammation score after central administration (0.1 µg/animal). Conclusions This is the first evidence that central and peripheral CB receptors are responsible for the protective and therapeutic action of cannabinoids in mouse models of colitis. Our observations provide new insight to CB pharmacology and validate the use of novel ligands AM841 and CB13 as potent tools in CB-related research.
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Affiliation(s)
- Jakub Fichna
- Snyder Institute for Chronic Disease, Department of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Biochemistry, Medical University of Lodz, Lodz, Poland
| | - Misha Bawa
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada
| | - Ganesh A. Thakur
- Center for Drug Discovery, Department of Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts, United States of America
| | - Ritesh Tichkule
- Center for Drug Discovery, Department of Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts, United States of America
| | - Alexandros Makriyannis
- Center for Drug Discovery, Department of Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts, United States of America
| | - Donna-Marie McCafferty
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada
| | - Keith A. Sharkey
- Snyder Institute for Chronic Disease, Department of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
| | - Martin Storr
- Snyder Institute for Chronic Disease, Department of Medicine, University of Calgary, Calgary, Alberta, Canada
- Division of Gastroenterology, Department of Medicine, University of Munich, Munich, Germany
- * E-mail:
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Vendel E, de Lange ECM. Functions of the CB1 and CB 2 receptors in neuroprotection at the level of the blood-brain barrier. Neuromolecular Med 2014; 16:620-42. [PMID: 24929655 DOI: 10.1007/s12017-014-8314-x] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Accepted: 05/14/2014] [Indexed: 12/30/2022]
Abstract
The cannabinoid (CB) receptors are the main targets of the cannabinoids, which include plant cannabinoids, endocannabinoids and synthetic cannabinoids. Over the last few years, accumulated evidence has suggested a role of the CB receptors in neuroprotection. The blood-brain barrier (BBB) is an important brain structure that is essential for neuroprotection. A link between the CB receptors and the BBB is thus likely, but this possible connection has only recently gained attention. Cannabinoids and the BBB share the same mechanisms of neuroprotection and both protect against excitotoxicity (CB1), cell death (CB1), inflammation (CB2) and oxidative stress (possibly CB independent)-all processes that also damage the BBB. Several examples of CB-mediated protection of the BBB have been found, such as inhibition of leukocyte influx and induction of amyloid beta efflux across the BBB. Moreover, the CB receptors were shown to improve BBB integrity, particularly by restoring the tightness of the tight junctions. This review demonstrated that both CB receptors are able to restore the BBB and neuroprotection, but much uncertainty about the underlying signaling cascades still exists and further investigation is needed.
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Affiliation(s)
- Esmée Vendel
- Division of Pharmacology, Leiden Academic Centre for Drug Research, Leiden University, Einsteinweg 55, 2333CC, PO Box 9502, 2300 RA, Leiden, The Netherlands
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Cannabinoid inhibits HIV-1 Tat-stimulated adhesion of human monocyte-like cells to extracellular matrix proteins. Life Sci 2014; 104:15-23. [PMID: 24742657 DOI: 10.1016/j.lfs.2014.04.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 03/07/2014] [Accepted: 04/05/2014] [Indexed: 12/13/2022]
Abstract
AIMS The aim of this study was to assess the effect of select cannabinoids on human immunodeficiency virus type 1 (HIV-1) transactivating (Tat) protein-enhanced monocyte-like cell adhesion to proteins of the extracellular matrix (ECM). MAIN METHODS Collagen IV, laminin, or an ECM gel was used to construct extracellular matrix layers. Human U937 monocyte-like cells were exposed to Tat in the presence of ∆(9)-tetrahydrocannabinol (THC), CP55,940, and other select cannabinoids. Cell attachment to ECM proteins was assessed using an adhesion assay. KEY FINDINGS THC and CP55,940 inhibited Tat-enhanced attachment of U937 cells to ECM proteins in a mode that was linked to the cannabinoid receptor type 2 (CB2R). The cannabinoid treatment of Tat-activated U937 cells was associated with altered β1-integrin expression and distribution of polymerized actin, suggesting a modality by which these cannabinoids inhibited adhesion to the ECM. SIGNIFICANCE The blood-brain barrier (BBB) is a complex structure that is composed of cellular elements and an extracellular matrix (ECM). HIV-1 Tat promotes transmigration of monocytes across this barrier, a process that includes interaction with ECM proteins. The results indicate that cannabinoids that activate the CB2R inhibit the ECM adhesion process. Thus, this receptor has potential to serve as a therapeutic agent for ablating neuroinflammation associated with HIV-elicited influx of monocytes across the BBB.
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Suijun W, Zhen Y, Ying G, Yanfang W. A role for trans-caryophyllene in the moderation of insulin secretion. Biochem Biophys Res Commun 2014; 444:451-4. [PMID: 24486541 DOI: 10.1016/j.bbrc.2013.11.136] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2013] [Accepted: 11/18/2013] [Indexed: 10/25/2022]
Abstract
Glucose-stimulated insulin secretion (GSIS) is essential for the control of metabolic fuel homeostasis and its impairment is a key element in the failure of β-cells in type 2 diabetes. Trans-caryophyllene (TC), an important constituent of the essential oil of several species of plants, has been reported to activate the type 2 cannabinoid receptor (CB2R). The effects of TC on GSIS are still unknown. Our results demonstrate that administration of TC in MIN6 cells promotes GSIS in a dose dependent manner. However, inhibition of CB2R by a specific inhibitor or specific RNA interference abolished the effects of TC on GSIS, which suggests that the effects of TC on GSIS are dependent on activation of CB2R. Further study demonstrated that treatment with TC leads to the activation of small G protein Arf6 as well as Rac1 and Cdc42. Importantly, Arf6 silencing abolished the effects of TC on GSIS, which suggests that Arf6 participates in mediating the effects of TC on GSIS. We conclude from these data that TC has a novel role in regulating GSIS in pancreatic β-cells.
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Affiliation(s)
- Wang Suijun
- Department of Endocrinology and Metabolism, Henan Provincial People's Hospital, Zhengzhou University, PR China.
| | - Yang Zhen
- Department of Endocrinology and Metabolism, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, PR China
| | - Gao Ying
- Neonatal Intensive Care Unit, Henan Provincial People's Hospital, Zhengzhou University, PR China
| | - Wang Yanfang
- Department of Endocrinology and Metabolism, Henan Provincial People's Hospital, Zhengzhou University, PR China
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Kawakami T, He J, Morita H, Yokoyama K, Kaji H, Tanaka C, Suemori SI, Tohyama K, Tohyama Y. Rab27a is essential for the formation of neutrophil extracellular traps (NETs) in neutrophil-like differentiated HL60 cells. PLoS One 2014; 9:e84704. [PMID: 24404184 PMCID: PMC3880328 DOI: 10.1371/journal.pone.0084704] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 11/18/2013] [Indexed: 01/26/2023] Open
Abstract
Neutrophils play a crucial role in host defence. In response to a variety of inflammatory stimulation, they form neutrophil extracellular traps (NETs). NETs are extracellular structures composed of chromatin fibers decorated with antimicrobial proteins and developing studies indicate that NETs contribute to extracellular microbial killing. While the intracellular signaling pathways that regulate NET formation remain largely unknown, there is growing evidence that generation of reactive oxygen species (ROS) is a key event for NET formation. The Rab family small GTPase Rab27a is an important component of the secretory machinery of azurophilic granules in neutrophils. However, the precise mechanism of NET formation and whether or not Rab27a contributes to this process are unknown. Using neutrophil-like differentiated HL60 cells, we show here that Rab27a plays an essential role in both phorbol myristate acetate (PMA)- and Candida albicans-induced NET formation by regulating ROS production. Rab27a-knockdown inhibited ROS-positive phagosome formation during complement-mediated phagocytosis. To investigate the role of Rab27a in neutrophil function in detail, both primary human neutrophils and neutrophil-like differentiated HL60 cells were treated with PMA, and NET formation process was assessed by measurement of release of histone H3 into the medium, citrullination of the arginine in position 3 of histone H4 and chase of the nuclear change of the living cells in the co-existence of both cell-permeable and -impermeable nuclear indicators. PMA-induced NET formation occured sequentially in both neutrophil-like differentiated HL60 cells and primary neutrophils, and Rab27a-knockdown clearly inhibited NET formation in association with reduced ROS production. We also found that serum-treated Candida albicans triggers NET formation in a ROS-dependent manner, and that Rab27a-knockdown inhibits this process as well. Our findings demonstrate that Rab27a plays an important role in NET formation induced by both Candida albicans infection and PMA treatment by regulating ROS production.
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Affiliation(s)
- Tatsumi Kawakami
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Japan
| | - Jinsong He
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Japan
| | - Hiroyuki Morita
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Japan
| | - Kunio Yokoyama
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Japan
- Division of Gastroenterological Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Hiroaki Kaji
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Japan
| | - Chisato Tanaka
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Japan
| | - Shin-ichiro Suemori
- Department of Laboratory Medicine, Kawasaki Medical School, Kurashiki, Japan
| | - Kaoru Tohyama
- Department of Laboratory Medicine, Kawasaki Medical School, Kurashiki, Japan
| | - Yumi Tohyama
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Japan
- * E-mail:
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Galve-Roperh I, Chiurchiù V, Díaz-Alonso J, Bari M, Guzmán M, Maccarrone M. Cannabinoid receptor signaling in progenitor/stem cell proliferation and differentiation. Prog Lipid Res 2013; 52:633-50. [PMID: 24076098 DOI: 10.1016/j.plipres.2013.05.004] [Citation(s) in RCA: 206] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Accepted: 05/28/2013] [Indexed: 12/11/2022]
Abstract
Cannabinoids, the active components of cannabis (Cannabis sativa) extracts, have attracted the attention of human civilizations for centuries, much earlier than the discovery and characterization of their substrate of action, the endocannabinoid system (ECS). The latter is an ensemble of endogenous lipids, their receptors [in particular type-1 (CB1) and type-2 (CB2) cannabinoid receptors] and metabolic enzymes. Cannabinoid signaling regulates cell proliferation, differentiation and survival, with different outcomes depending on the molecular targets and cellular context involved. Cannabinoid receptors are expressed and functional from the very early developmental stages, when they regulate embryonic and trophoblast stem cell survival and differentiation, and thus may affect the formation of manifold adult specialized tissues derived from the three different germ layers (ectoderm, mesoderm and endoderm). In the ectoderm-derived nervous system, both CB1 and CB2 receptors are present in neural progenitor/stem cells and control their self-renewal, proliferation and differentiation. CB1 and CB2 show opposite patterns of expression, the former increasing and the latter decreasing along neuronal differentiation. Recently, endocannabinoid (eCB) signaling has also been shown to regulate proliferation and differentiation of mesoderm-derived hematopoietic and mesenchymal stem cells, with a key role in determining the formation of several cell types in peripheral tissues, including blood cells, adipocytes, osteoblasts/osteoclasts and epithelial cells. Here, we will review these new findings, which unveil the involvement of eCB signaling in the regulation of progenitor/stem cell fate in the nervous system and in the periphery. The developmental regulation of cannabinoid receptor expression and cellular/subcellular localization, together with their role in progenitor/stem cell biology, may have important implications in human health and disease.
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Affiliation(s)
- Ismael Galve-Roperh
- Department of Biochemistry and Molecular Biology I, School of Biology, Complutense University, IUIN, CIBERNED and IRYCIS, 28040 Madrid, Spain.
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Rom S, Zuluaga-Ramirez V, Dykstra H, Reichenbach NL, Pacher P, Persidsky Y. Selective activation of cannabinoid receptor 2 in leukocytes suppresses their engagement of the brain endothelium and protects the blood-brain barrier. THE AMERICAN JOURNAL OF PATHOLOGY 2013; 183:1548-1558. [PMID: 24055259 DOI: 10.1016/j.ajpath.2013.07.033] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 07/18/2013] [Accepted: 07/25/2013] [Indexed: 01/13/2023]
Abstract
Cannabinoid receptor 2 (CB2) is highly expressed in immune cells and stimulation decreases inflammatory responses. We tested the idea that selective CB2 activation in human monocytes suppresses their ability to engage the brain endothelium and migrate across the blood-brain barrier (BBB), preventing consequent injury. Intravital videomicroscopy was used to quantify adhesion of leukocytes to cortical vessels in lipopolysaccharide-induced neuroinflammation, after injection of ex vivo CB2-activated leukocytes into mice; CB2 agonists markedly decreased adhesion of ex vivo labeled cells in vivo. In an in vitro BBB model, CB2 activation in monocytes largely attenuated adhesion to and migration across monolayers of primary human brain microvascular endothelial cells and diminished BBB damage. CB2 stimulation in monocytes down-regulated active forms of integrins, lymphocyte function-associated antigen 1 (LFA-1), and very late antigen 4 (VLA-4). Cells treated with CB2 agonists exhibited increased phosphorylation levels of inhibitory sites of the actin-binding proteins cofilin and VASP, which are upstream regulators of conformational integrin changes. Up-regulated by relevant stimuli, Rac1 and RhoA were suppressed by CB2 agonists in monocytes. CB2 stimulation decreased formation of lamellipodia, which play a key role in monocyte migration. These results indicate that selective CB2 activation in leukocytes decreases key steps in monocyte-BBB engagement, thus suppressing inflammatory leukocyte responses and preventing neuroinflammation.
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Affiliation(s)
- Slava Rom
- Department of Pathology and Laboratory Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania.
| | - Viviana Zuluaga-Ramirez
- Department of Pathology and Laboratory Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania
| | - Holly Dykstra
- Department of Pathology and Laboratory Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania
| | - Nancy L Reichenbach
- Department of Pathology and Laboratory Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania
| | - Pal Pacher
- Section on Oxidative Stress and Tissue Injury, Laboratory of Physiological Studies, National Institutes of Health/Institute on Alcohol Abuse and Alcoholism, Bethesda, Maryland
| | - Yuri Persidsky
- Department of Pathology and Laboratory Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania.
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