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Lteif A, Shebaby W, El Hage M, Azar-Atallah S, Mroue D, Mroueh M, Daher CF. Lebanese cannabis oil as a potential treatment for acute myeloid leukemia: In vitro and in vivo evaluations. JOURNAL OF ETHNOPHARMACOLOGY 2024; 333:118512. [PMID: 38964627 DOI: 10.1016/j.jep.2024.118512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 06/26/2024] [Accepted: 06/30/2024] [Indexed: 07/06/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The Cannabis sativa L. ssp. indica (Lam.) plant has been historically utilized as a natural herbal remedy for the treatment of several ailments. In Lebanon, cannabis extracts have long been traditionally used to treat arthritis, diabetes, and cancer. AIM OF THE STUDY The current study aims to investigate the anti-cancer properties of Lebanese cannabis oil extract (COE) on acute myeloid leukemia using WEHI-3 cells, and a WEHI-3-induced leukemia mouse model. MATERIALS AND METHODS WEHI-3 cells were treated with increasing concentrations of COE to determine the IC50 after 24, 48 and 72-h post treatment. Flow cytometry was utilized to identify the mode of cell death. Western blot assay was performed to assess apoptotic marker proteins. In vivo model was established by inoculating WEHI-3 cells in BALB/c mice, and treatment commencing 10 days post-inoculation and continued for a duration of 3 weeks. RESULTS COE exhibited significant cytotoxicity with IC50 of 7.76, 3.82, and 3.34 μg/mL at 24, 48, and 72 h respectively post-treatment. COE treatment caused an induction of apoptosis through an inhibition of the MAPK/ERK pathway and triggering a caspase-dependent apoptosis via the extrinsic and intrinsic modes independent of ROS production. Animals treated with COE exhibited a significantly higher survival rate, reduction in spleen weight as well as white blood cells count. CONCLUSION COE exhibited a potent anti-cancer activity against AML cells, both in vitro and in vivo. These findings emphasize the potential application of COE as a chemotherapeutic adjuvant in treatment of acute myeloid leukemia.
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Affiliation(s)
- Anthony Lteif
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Byblos, 1102 2801, Lebanon.
| | - Wassim Shebaby
- Departement of Pharmaceutical Sciences, School of Pharmacy, Lebanese American University, Byblos, 1102 2801, Lebanon.
| | - Marissa El Hage
- Departement of Pharmaceutical Sciences, School of Pharmacy, Lebanese American University, Byblos, 1102 2801, Lebanon.
| | - Shirine Azar-Atallah
- Departement of Pharmaceutical Sciences, School of Pharmacy, Lebanese American University, Byblos, 1102 2801, Lebanon.
| | - Dima Mroue
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Byblos, 1102 2801, Lebanon.
| | - Mohamad Mroueh
- Departement of Pharmaceutical Sciences, School of Pharmacy, Lebanese American University, Byblos, 1102 2801, Lebanon.
| | - Costantine F Daher
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Byblos, 1102 2801, Lebanon; Alice Ramez Chagoury School of Nursing, Lebanese American University, Byblos, 1102 2801, Lebanon.
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Marini P, Maccarrone M, Saso L, Tucci P. The Effect of Phytocannabinoids and Endocannabinoids on Nrf2 Activity in the Central Nervous System and Periphery. Neurol Int 2024; 16:776-789. [PMID: 39051218 PMCID: PMC11270200 DOI: 10.3390/neurolint16040057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Revised: 07/12/2024] [Accepted: 07/16/2024] [Indexed: 07/27/2024] Open
Abstract
The relationship between nuclear factor erythroid 2-related factor 2 (Nrf2) and phytocannabinoids/endocannabinoids (pCBs/eCBs) has been investigated in a variety of models of peripheral illnesses, with little clarification on their interaction within the central nervous system (CNS). In this context, evidence suggests that the Nrf2-pCBs/eCBS interaction is relevant in modulating peroxidation processes and the antioxidant system. Nrf2, one of the regulators of cellular redox homeostasis, appears to have a protective role toward damaging insults to neurons and glia by enhancing those genes involved in the regulation of homeostatic processes. Specifically in microglia and macroglia cells, Nrf2 can be activated, and its signaling pathway modulated, by both pCBs and eCBs. However, the precise effects of pCBs and eCBs on the Nrf2 signaling pathway are not completely elucidated yet, making their potential clinical employment still not fully understood.
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Affiliation(s)
- Pietro Marini
- Institute of Education in Healthcare and Medical Sciences, Foresterhill Campus, University of Aberdeen, Aberdeen AB25 2ZD, UK
| | - Mauro Maccarrone
- Department of Biotechnological and Applied Clinical Sciences, University of L’Aquila, Via Vetoio snc, Coppito, 67100 L’Aquila, Italy
- European Center for Brain Research (CERC), Santa Lucia Foundation IRCCS, Via del Fosso di Fiorano 64, 00143 Rome, Italy
| | - Luciano Saso
- Department of Physiology and Pharmacology “Vittorio Erspamer”, Sapienza University of Rome, 00185 Rome, Italy
| | - Paolo Tucci
- Department of Clinical and Experimental Medicine, University of Foggia, 71122 Foggia, Italy
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Creanga-Murariu I, Filipiuc LE, Cuciureanu M, Tamba BI, Alexa-Stratulat T. Should oncologists trust cannabinoids? Front Pharmacol 2023; 14:1211506. [PMID: 37521486 PMCID: PMC10373070 DOI: 10.3389/fphar.2023.1211506] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 07/03/2023] [Indexed: 08/01/2023] Open
Abstract
Cannabis enjoyed a "golden age" as a medicinal product in the late 19th, early 20th century, but the increased risk of overdose and abuse led to its criminalization. However, the 21st century have witnessed a resurgence of interest and a large body of literature regarding the benefits of cannabinoids have emerged. As legalization and decriminalization have spread around the world, cancer patients are increasingly interested in the potential utility of cannabinoids. Although eager to discuss cannabis use with their oncologist, patients often find them to be reluctant, mainly because clinicians are still not convinced by the existing evidence-based data to guide their treatment plans. Physicians should prescribe cannabis only if a careful explanation can be provided and follow up response evaluation ensured, making it mandatory for them to be up to date with the positive and also negative aspects of the cannabis in the case of cancer patients. Consequently, this article aims to bring some clarifications to clinicians regarding the sometimes-confusing various nomenclature under which this plant is mentioned, current legislation and the existing evidence (both preclinical and clinical) for the utility of cannabinoids in cancer patients, for either palliation of the associated symptoms or even the potential antitumor effects that cannabinoids may have.
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Affiliation(s)
- Ioana Creanga-Murariu
- Advanced Research and Development Center for Experimental Medicine (CEMEX), “Grigore T. Popa” University of Medicine and Pharmacy, Iași, Romania
- Oncology Department, “Grigore T. Popa” University of Medicine and Pharmacy, Iași, Romania
| | - Leontina Elena Filipiuc
- Advanced Research and Development Center for Experimental Medicine (CEMEX), “Grigore T. Popa” University of Medicine and Pharmacy, Iași, Romania
| | - Magda Cuciureanu
- Pharmacology Department, Clinical Pharmacology and Algesiology, “Grigore T. Popa” University of Medicine and Pharmacy, Iași, Romania
| | - Bogdan-Ionel Tamba
- Advanced Research and Development Center for Experimental Medicine (CEMEX), “Grigore T. Popa” University of Medicine and Pharmacy, Iași, Romania
- Pharmacology Department, Clinical Pharmacology and Algesiology, “Grigore T. Popa” University of Medicine and Pharmacy, Iași, Romania
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Selyutina OY, Kononova PA, Koshman VE, Fedenok LG, Polyakov NE. The Interplay of Ascorbic Acid with Quinones-Chelators—Influence on Lipid Peroxidation: Insight into Anticancer Activity. Antioxidants (Basel) 2022; 11:antiox11020376. [PMID: 35204258 PMCID: PMC8869476 DOI: 10.3390/antiox11020376] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/24/2022] [Accepted: 02/11/2022] [Indexed: 12/11/2022] Open
Abstract
Ascorbic acid is a multifaceted compound that can perform both antioxidant and pro-oxidant activities in the redox reactions induced by transition metal ions, so its role in nature and especially in the human body is still the subject of debate. In the present study, we have examined the influence of ascorbic acid on lipid peroxidation in a model system that mimics the cell membrane, namely micelles of linoleic acid (LA), induced by chelate complexes of iron and copper ions with quinone-chelator 2-phenyl-4-(butylamino)-naphtholquinoline-7,12-dione (Q1). This quinone effectively generates reactive oxygen species and semiquinone radicals inside cancer cells via a cycling redox reaction. Here it was demonstrated that in the absence of quinone-chelator ascorbic acid significantly accelerates the lipid peroxidation induced by both Fe(II) and Cu(II) ions. It has been shown also that Q1 chelate complexes with Fe(II) and Cu(II) ions are redox active in the LA micelles oxidation. No effect of ascorbate was detected on the reactivity of chelate complex with Fe(II) ions. On the other hand, ascorbate performs pro-oxidant activity in Q1-Cu(II) complex induced reaction. We can conclude that ascorbate-driven redox cycling of Q1 may promote its anti-tumor activity.
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Botto L, Bulbarelli A, Lonati E, Cazzaniga E, Tassotti M, Mena P, Del Rio D, Palestini P. Study of the Antioxidant Effects of Coffee Phenolic Metabolites on C6 Glioma Cells Exposed to Diesel Exhaust Particles. Antioxidants (Basel) 2021; 10:antiox10081169. [PMID: 34439417 PMCID: PMC8388867 DOI: 10.3390/antiox10081169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/12/2021] [Accepted: 07/19/2021] [Indexed: 01/17/2023] Open
Abstract
The contributing role of environmental factors to the development of neurodegenerative diseases has become increasingly evident. Here, we report that exposure of C6 glioma cells to diesel exhaust particles (DEPs), a major constituent of urban air pollution, causes intracellular reactive oxygen species (ROS) production. In this scenario, we suggest employing the possible protective role that coffee phenolic metabolites may have. Coffee is a commonly consumed hot beverage and a major contributor to the dietary intake of (poly) phenols. Taking into account physiological concentrations, we analysed the effects of two different coffee phenolic metabolites mixes consisting of compounds derived from bacterial metabolization reactions or phase II conjugations, as well as caffeic acid. The results showed that these mixes were able to counteract DEP-induced oxidative stress. The cellular components mediating the downregulation of ROS included extracellular signal-regulated kinase 1/2 (ERK1/2), nuclear factor erythroid 2-related factor 2 (Nrf2), heme oxygenase-1 (HO-1), and uncoupling protein 2 (UCP2). Contrary to coffee phenolic metabolites, the treatment with N-acetylcysteine (NAC), a known antioxidant, was found to be ineffective in preventing the DEP exposure oxidant effect. These results revealed that coffee phenolic metabolites could be promising candidates to protect against some adverse health effects of daily exposure to air pollution.
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Affiliation(s)
- Laura Botto
- School of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy; (L.B.); (A.B.); (E.L.); (E.C.)
| | - Alessandra Bulbarelli
- School of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy; (L.B.); (A.B.); (E.L.); (E.C.)
- POLARIS Centre, University of Milano-Bicocca, 20126 Milano, Italy
- Bicocca Center of Science and Technology for Food, University of Milano-Bicocca, Piazza della Scienza, 2, 20126 Milano, Italy
| | - Elena Lonati
- School of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy; (L.B.); (A.B.); (E.L.); (E.C.)
- Bicocca Center of Science and Technology for Food, University of Milano-Bicocca, Piazza della Scienza, 2, 20126 Milano, Italy
| | - Emanuela Cazzaniga
- School of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy; (L.B.); (A.B.); (E.L.); (E.C.)
- Bicocca Center of Science and Technology for Food, University of Milano-Bicocca, Piazza della Scienza, 2, 20126 Milano, Italy
| | - Michele Tassotti
- Human Nutrition Unit, Department of Food and Drug, University of Parma, 43121 Parma, Italy; (M.T.); (P.M.); (D.D.R.)
| | - Pedro Mena
- Human Nutrition Unit, Department of Food and Drug, University of Parma, 43121 Parma, Italy; (M.T.); (P.M.); (D.D.R.)
| | - Daniele Del Rio
- Human Nutrition Unit, Department of Food and Drug, University of Parma, 43121 Parma, Italy; (M.T.); (P.M.); (D.D.R.)
- School of Advanced Studies on Food and Nutrition, University of Parma, 43121 Parma, Italy
| | - Paola Palestini
- School of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy; (L.B.); (A.B.); (E.L.); (E.C.)
- POLARIS Centre, University of Milano-Bicocca, 20126 Milano, Italy
- Bicocca Center of Science and Technology for Food, University of Milano-Bicocca, Piazza della Scienza, 2, 20126 Milano, Italy
- Correspondence:
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Anti-Cancer Potential of Cannabinoids, Terpenes, and Flavonoids Present in Cannabis. Cancers (Basel) 2020; 12:cancers12071985. [PMID: 32708138 PMCID: PMC7409346 DOI: 10.3390/cancers12071985] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/17/2020] [Accepted: 07/19/2020] [Indexed: 02/06/2023] Open
Abstract
In recent years, and even more since its legalization in several jurisdictions, cannabis and the endocannabinoid system have received an increasing amount of interest related to their potential exploitation in clinical settings. Cannabinoids have been suggested and shown to be effective in the treatment of various conditions. In cancer, the endocannabinoid system is altered in numerous types of tumours and can relate to cancer prognosis and disease outcome. Additionally, cannabinoids display anticancer effects in several models by suppressing the proliferation, migration and/or invasion of cancer cells, as well as tumour angiogenesis. However, the therapeutic use of cannabinoids is currently limited to the treatment of symptoms and pain associated with chemotherapy, while their potential use as cytotoxic drugs in chemotherapy still requires validation in patients. Along with cannabinoids, cannabis contains several other compounds that have also been shown to exert anti-tumorigenic actions. The potential anti-cancer effects of cannabinoids, terpenes and flavonoids, present in cannabis, are explored in this literature review.
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Richards JR. Mechanisms for the Risk of Acute Coronary Syndrome and Arrhythmia Associated With Phytogenic and Synthetic Cannabinoid Use. J Cardiovasc Pharmacol Ther 2020; 25:508-522. [PMID: 32588641 DOI: 10.1177/1074248420935743] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Phytogenic cannabinoids from Cannabis sativa and synthetic cannabinoids are commonly used substances for their recreational and medicinal properties. There are increasing reports of cardiotoxicity in close temporal association with cannabinoid use in patients with structurally normal hearts and absence of coronary arterial disease. Associated adverse events include myocardial ischemia, conduction abnormalities, arrhythmias, and sudden death. This review details the effects of phytogenic and synthetic cannabinoids on diverse receptors based on evidence from in vitro, human, and animal studies to establish a molecular basis for these deleterious clinical effects. The synergism between endocannabinoid dysregulation, cannabinoid receptor, and noncannabinoid receptor binding, and impact on cellular ion flux and coronary microvascular circulation is delineated. Pharmacogenetic factors placing certain patients at higher risk for cardiotoxicity are also correlated with the diverse effects of cannabinoids.
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Affiliation(s)
- John R Richards
- Department of Emergency Medicine, 70083University of California Davis Medical Center, Sacramento, California, CA, USA
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8
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Afrin F, Chi M, Eamens AL, Duchatel RJ, Douglas AM, Schneider J, Gedye C, Woldu AS, Dun MD. Can Hemp Help? Low-THC Cannabis and Non-THC Cannabinoids for the Treatment of Cancer. Cancers (Basel) 2020; 12:cancers12041033. [PMID: 32340151 PMCID: PMC7226605 DOI: 10.3390/cancers12041033] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 04/20/2020] [Indexed: 12/21/2022] Open
Abstract
Cannabis has been used to relieve the symptoms of disease for thousands of years. However, social and political biases have limited effective interrogation of the potential benefits of cannabis and polarised public opinion. Further, the medicinal and clinical utility of cannabis is limited by the psychotropic side effects of ∆9-tetrahydrocannabinol (∆9-THC). Evidence is emerging for the therapeutic benefits of cannabis in the treatment of neurological and neurodegenerative diseases, with potential efficacy as an analgesic and antiemetic for the management of cancer-related pain and treatment-related nausea and vomiting, respectively. An increasing number of preclinical studies have established that ∆9-THC can inhibit the growth and proliferation of cancerous cells through the modulation of cannabinoid receptors (CB1R and CB2R), but clinical confirmation remains lacking. In parallel, the anti-cancer properties of non-THC cannabinoids, such as cannabidiol (CBD), are linked to the modulation of non-CB1R/CB2R G-protein-coupled receptors, neurotransmitter receptors, and ligand-regulated transcription factors, which together modulate oncogenic signalling and redox homeostasis. Additional evidence has also demonstrated the anti-inflammatory properties of cannabinoids, and this may prove relevant in the context of peritumoural oedema and the tumour immune microenvironment. This review aims to document the emerging mechanisms of anti-cancer actions of non-THC cannabinoids.
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Affiliation(s)
- Farjana Afrin
- Cancer Signalling Research Group, Medical Biochemistry, School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia; (F.A.); (M.C.); (R.J.D.); (A.M.D.); (C.G.)
- Priority Research Centre for Cancer Research, Innovation & Translation, Faculty of Health and Medicine, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia;
| | - Mengna Chi
- Cancer Signalling Research Group, Medical Biochemistry, School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia; (F.A.); (M.C.); (R.J.D.); (A.M.D.); (C.G.)
- Priority Research Centre for Cancer Research, Innovation & Translation, Faculty of Health and Medicine, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia;
| | - Andrew L. Eamens
- Centre for Plant Science, School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW 2308, Australia;
| | - Ryan J. Duchatel
- Cancer Signalling Research Group, Medical Biochemistry, School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia; (F.A.); (M.C.); (R.J.D.); (A.M.D.); (C.G.)
- Priority Research Centre for Cancer Research, Innovation & Translation, Faculty of Health and Medicine, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia;
| | - Alicia M. Douglas
- Cancer Signalling Research Group, Medical Biochemistry, School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia; (F.A.); (M.C.); (R.J.D.); (A.M.D.); (C.G.)
- Priority Research Centre for Cancer Research, Innovation & Translation, Faculty of Health and Medicine, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia;
| | - Jennifer Schneider
- Priority Research Centre for Cancer Research, Innovation & Translation, Faculty of Health and Medicine, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia;
- Priority Research Centre for Chemical Biology and Clinical Pharmacology, School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Craig Gedye
- Cancer Signalling Research Group, Medical Biochemistry, School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia; (F.A.); (M.C.); (R.J.D.); (A.M.D.); (C.G.)
- Priority Research Centre for Cancer Research, Innovation & Translation, Faculty of Health and Medicine, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia;
- Calvary Mater Newcastle, Waratah, NSW 2298, Australia
| | - Ameha S. Woldu
- Cancer Signalling Research Group, Medical Biochemistry, School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia; (F.A.); (M.C.); (R.J.D.); (A.M.D.); (C.G.)
- Priority Research Centre for Cancer Research, Innovation & Translation, Faculty of Health and Medicine, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia;
- Correspondence: (A.S.W.); (M.D.D.); Tel.: +61-02-4921-7807 (A.S.W.); +61-02-4921-5693 (M.D.D.)
| | - Matthew D. Dun
- Cancer Signalling Research Group, Medical Biochemistry, School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia; (F.A.); (M.C.); (R.J.D.); (A.M.D.); (C.G.)
- Priority Research Centre for Cancer Research, Innovation & Translation, Faculty of Health and Medicine, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia;
- Correspondence: (A.S.W.); (M.D.D.); Tel.: +61-02-4921-7807 (A.S.W.); +61-02-4921-5693 (M.D.D.)
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Pehlivan S, Yazici AB, Aydin N, Nursal AF, Kurnaz S, Ongel Atar A, Sever U, Kincir Z, Pehlivan M, Cetinay Aydin P. Possible association between DNA repair gene variants and cannabis dependence in a Turkish cohort: a pilot study. PSYCHIAT CLIN PSYCH 2018. [DOI: 10.1080/24750573.2018.1468615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
Affiliation(s)
- Sacide Pehlivan
- Department of Medical Biology, Istanbul University, Istanbul Faculty of Medicine, Istanbul, Turkey
| | - Ahmet Bulent Yazici
- Department of Psychiatry, Sakarya University Education and Research Hospital, Sakarya, Turkey
| | - Nazan Aydin
- Department of Psychiatry, Bakırkoy Prof Dr. Mazhar Osman Mental Health and Neurological Disorders Education and Research Hospital, Istanbul, Turkey
| | - Ayse Feyda Nursal
- Department of Medical Genetics, Faculty of Medicine, Hitit University, Corum, Turkey
| | - Selin Kurnaz
- Department of Medical Biology, Istanbul University, Istanbul Faculty of Medicine, Istanbul, Turkey
| | - Ayca Ongel Atar
- Department of Psychiatry, Bakırkoy Prof Dr. Mazhar Osman Mental Health and Neurological Disorders Education and Research Hospital, Istanbul, Turkey
| | - Ulgen Sever
- Department of Medical Biology, Istanbul University, Istanbul Faculty of Medicine, Istanbul, Turkey
| | - Zeliha Kincir
- Department of Psychiatry, Bakırkoy Prof Dr. Mazhar Osman Mental Health and Neurological Disorders Education and Research Hospital, Istanbul, Turkey
| | - Mustafa Pehlivan
- Department of Haematology, Faculty of Medicine, Gaziantep University, Gaziantep, Turkey
| | - Pınar Cetinay Aydin
- Department of Psychiatry, Bakırkoy Prof Dr. Mazhar Osman Mental Health and Neurological Disorders Education and Research Hospital, Istanbul, Turkey
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Paloczi J, Varga ZV, Hasko G, Pacher P. Neuroprotection in Oxidative Stress-Related Neurodegenerative Diseases: Role of Endocannabinoid System Modulation. Antioxid Redox Signal 2018; 29:75-108. [PMID: 28497982 PMCID: PMC5984569 DOI: 10.1089/ars.2017.7144] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
SIGNIFICANCE Redox imbalance may lead to overproduction of reactive oxygen and nitrogen species (ROS/RNS) and subsequent oxidative tissue damage, which is a critical event in the course of neurodegenerative diseases. It is still not fully elucidated, however, whether oxidative stress is the primary trigger or a consequence in the process of neurodegeneration. Recent Advances: Increasing evidence suggests that oxidative stress is involved in the propagation of neuronal injury and consequent inflammatory response, which in concert promote development of pathological alterations characteristic of most common neurodegenerative diseases. CRITICAL ISSUES Accumulating recent evidence also suggests that there is an important interplay between the lipid endocannabinoid system [ECS; comprising the main cannabinoid 1 and 2 receptors (CB1 and CB2), endocannabinoids, and their synthetic and metabolizing enzymes] and various key inflammatory and redox-dependent processes. FUTURE DIRECTIONS Targeting the ECS to modulate redox state-dependent cell death and to decrease consequent or preceding inflammatory response holds therapeutic potential in a multitude of oxidative stress-related acute or chronic neurodegenerative disorders from stroke and traumatic brain injury to Alzheimer's and Parkinson's diseases and multiple sclerosis, just to name a few, which will be discussed in this overview. Antioxid. Redox Signal. 29, 75-108.
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Affiliation(s)
- Janos Paloczi
- 1 Laboratory of Cardiovascular Physiology and Tissue Injury (LCPTI), National Institute on Alcohol Abuse and Alcoholism (NIAAA), National Institutes of Health (NIH) , Bethesda, Maryland
| | - Zoltan V Varga
- 1 Laboratory of Cardiovascular Physiology and Tissue Injury (LCPTI), National Institute on Alcohol Abuse and Alcoholism (NIAAA), National Institutes of Health (NIH) , Bethesda, Maryland
| | - George Hasko
- 2 Department of Surgery, Rutgers New Jersey Medical School , Newark, New Jersey
| | - Pal Pacher
- 1 Laboratory of Cardiovascular Physiology and Tissue Injury (LCPTI), National Institute on Alcohol Abuse and Alcoholism (NIAAA), National Institutes of Health (NIH) , Bethesda, Maryland
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Juknat A, Kozela E, Kaushansky N, Mechoulam R, Vogel Z. Anti-inflammatory effects of the cannabidiol derivative dimethylheptyl-cannabidiol - studies in BV-2 microglia and encephalitogenic T cells. J Basic Clin Physiol Pharmacol 2017; 27:289-96. [PMID: 26540221 DOI: 10.1515/jbcpp-2015-0071] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 09/13/2015] [Indexed: 12/26/2022]
Abstract
BACKGROUND Dimethylheptyl-cannabidiol (DMH-CBD), a non-psychoactive, synthetic derivative of the phytocannabinoid cannabidiol (CBD), has been reported to be anti-inflammatory in RAW macrophages. Here, we evaluated the effects of DMH-CBD at the transcriptional level in BV-2 microglial cells as well as on the proliferation of encephalitogenic T cells. METHODS BV-2 cells were pretreated with DMH-CBD, followed by stimulation with the endotoxin lipopolysaccharide (LPS). The expression levels of selected genes involved in stress regulation and inflammation were determined by quantitative real-time PCR. In addition, MOG35-55-reactive T cells (TMOG) were cultured with antigen-presenting cells in the presence of DMH-CBD and MOG35-55 peptide, and cell proliferation was determined by measuring [3H]thymidine incorporation. RESULTS DMH-CBD treatment downregulated in a dose-dependent manner the mRNA expression of LPS-upregulated pro-inflammatory genes (Il1b, Il6, and Tnf) in BV-2 microglial cells. The expression of these genes was also downregulated by DMH-CBD in unstimulated cells. In parallel, DMH-CBD upregulated the expression of genes related to oxidative stress and glutathione homeostasis such as Trb3, Slc7a11/xCT, Hmox1, Atf4, Chop, and p8 in both stimulated and unstimulated microglial cells. In addition, DMH-CBD dose-dependently inhibited MOG35-55-induced TMOG proliferation. CONCLUSIONS The results show that DMH-CBD has similar anti-inflammatory properties to those of CBD. DMH-CBD downregulates the expression of inflammatory cytokines and protects the microglial cells by inducing an adaptive cellular response against inflammatory stimuli and oxidative injury. In addition, DMH-CBD decreases the proliferation of pathogenic activated TMOG cells.
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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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Abstract
Abstract
The role of metal ions in the mechanism of light-stimulated redox activity of potential anticancer agent 2-phenyl-4-(butylamino)naphtha[2,3-h]quinoline-7,12-dione (Qc) has been studied by CIDNP (chemically induced dynamic nuclear polarization) and EPR methods. The photo-induced oxidation of NADH and its synthetic analog – substituted dihydropyridine (DHP) – by quinone Qc was used as a model. The Qc capability of producing chelating complexes with divalent metal ions of Fe, Zn and Ca was studied quantitatively by optical absorption spectroscopy. A significant decrease of electrochemical reduction potential of Qc (ΔE=0.4−0.6 eV for ACN and ACN/PBS solutions) in chelating complexes and in protonated form of Qc was observed. A pronounced increase in efficiency of DHP oxidation in chelating complexes with Zn2+ and Ca2+ ions compared with free Qc was demonstrated. The yields of free radicals, including reactive oxygen species (ROS) and reaction products, were a few times higher than those in the absence of metal ions. Application of such chelating compounds to enhance ROS generation looks very promising for anti-cancer therapy, including the photodynamic therapy.
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Involvement of MEK-ERK1-2 pathway in the anti-oxidant response in C6 glioma cells after diesel exhaust particles exposure. Toxicol Lett 2016; 250-251:57-65. [DOI: 10.1016/j.toxlet.2016.04.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 04/05/2016] [Accepted: 04/07/2016] [Indexed: 12/18/2022]
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Lipina C, Hundal HS. Modulation of cellular redox homeostasis by the endocannabinoid system. Open Biol 2016; 6:150276. [PMID: 27248801 PMCID: PMC4852457 DOI: 10.1098/rsob.150276] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 04/01/2016] [Indexed: 02/06/2023] Open
Abstract
The endocannabinoid system (ECS) and reactive oxygen species (ROS) constitute two key cellular signalling systems that participate in the modulation of diverse cellular functions. Importantly, growing evidence suggests that cross-talk between these two prominent signalling systems acts to modulate functionality of the ECS as well as redox homeostasis in different cell types. Herein, we review and discuss evidence pertaining to ECS-induced regulation of ROS generating and scavenging mechanisms, as well as highlighting emerging work that supports redox modulation of ECS function. Functionally, the studies outlined reveal that interactions between the ECS and ROS signalling systems can be both stimulatory and inhibitory in nature, depending on cell stimulus, the source of ROS species and cell context. Importantly, such cross-talk may act to maintain cell function, whereas abnormalities in either system may propagate and undermine the stability of both systems, thereby contributing to various pathologies associated with their dysregulation.
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Affiliation(s)
- Christopher Lipina
- Division of Cell Signalling and Immunology, Sir James Black Centre, School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
| | - Harinder S Hundal
- Division of Cell Signalling and Immunology, Sir James Black Centre, School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
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Kim HR, Jung MH, Lee SY, Oh SM, Chung KH. Marijuana smoke condensate induces p53-mediated apoptosis in human lung epithelial cells. J Toxicol Sci 2013; 38:337-47. [PMID: 23665932 DOI: 10.2131/jts.38.337] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Since the largely abused worldwide used of marijuana, there have been many ongoing debates regarding the adverse health effects of marijuana smoking. Marijuana smoking was recently proved to cause pulmonary toxicity by inducing genotoxic effects or generating reactive oxygen species. Because p53, a tumor suppressor gene, has an important pathophysiologic role in the regulation of lung epithelial cell DNA damage responses, we hypothesized that p53 may be involved in the oxidative stress-mediated apoptosis induced by marijuana smoking. First, we confirmed that marijuana smoke condensate (MSC) induces oxidative stress in BEAS-2B cells. We observed that reactive oxygen species (ROS) generation was increased by MSC in the DCFH-DA assay. Also, antioxidant enzyme (superoxide dismutase, catalase) activity and their mRNA expressions were up-regulated by MSC. Second, we investigated p53 involvement in the MSC-induced apoptotic pathway in BEAS-2B cells. The results showed that MSC increased caspase-3 activation and DNA fragmentation as markers of apoptosis. In addition, the mRNA levels of apoptosis-related genes (p53 and Bax) were increased by MSC and phospho-p53, along with the increase of Bax protein expression by MSC. Apoptosis and apoptosis-related gene expression were partially blocked by an inhibitor of p53-dependent transcriptional activation (pifithrin-α). The results indicate that p53 plays a role in MSC-induced apoptosis. Taken together, the findings of the present study suggest that MSC partially induces p53-mediated apoptosis through ROS generation in human lung epithelial cells and this may have broader implications for our understanding of pulmonary diseases.
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Affiliation(s)
- Ha Ryong Kim
- School of Pharmacy, Sungkyunkwan University, Korea
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Rocha FCM, dos Santos Júnior JG, Stefano SC, da Silveira DX. Systematic review of the literature on clinical and experimental trials on the antitumor effects of cannabinoids in gliomas. J Neurooncol 2013; 116:11-24. [DOI: 10.1007/s11060-013-1277-1] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Accepted: 10/09/2013] [Indexed: 01/13/2023]
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Bilkei-Gorzo A. The endocannabinoid system in normal and pathological brain ageing. Philos Trans R Soc Lond B Biol Sci 2013; 367:3326-41. [PMID: 23108550 DOI: 10.1098/rstb.2011.0388] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The role of endocannabinoids as inhibitory retrograde transmitters is now widely known and intensively studied. However, endocannabinoids also influence neuronal activity by exerting neuroprotective effects and regulating glial responses. This review centres around this less-studied area, focusing on the cellular and molecular mechanisms underlying the protective effect of the cannabinoid system in brain ageing. The progression of ageing is largely determined by the balance between detrimental, pro-ageing, largely stochastic processes, and the activity of the homeostatic defence system. Experimental evidence suggests that the cannabinoid system is part of the latter system. Cannabinoids as regulators of mitochondrial activity, as anti-oxidants and as modulators of clearance processes protect neurons on the molecular level. On the cellular level, the cannabinoid system regulates the expression of brain-derived neurotrophic factor and neurogenesis. Neuroinflammatory processes contributing to the progression of normal brain ageing and to the pathogenesis of neurodegenerative diseases are suppressed by cannabinoids, suggesting that they may also influence the ageing process on the system level. In good agreement with the hypothesized beneficial role of cannabinoid system activity against brain ageing, it was shown that animals lacking CB1 receptors show early onset of learning deficits associated with age-related histological and molecular changes. In preclinical models of neurodegenerative disorders, cannabinoids show beneficial effects, but the clinical evidence regarding their efficacy as therapeutic tools is either inconclusive or still missing.
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Kim HR, Son BH, Lee SY, Chung KH, Oh SM. The Role of p53 in Marijuana Smoke Condensates-induced Genotoxicity and Apoptosis. ENVIRONMENTAL HEALTH AND TOXICOLOGY 2012; 27:e2012017. [PMID: 23106039 PMCID: PMC3479268 DOI: 10.5620/eht.2012.27.e2012017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Accepted: 08/14/2012] [Indexed: 06/01/2023]
Abstract
OBJECTIVES Marijuana is one of the most frequently abused drug in Korea and its adverse health effects are controversial. p53 is known to be crucial in regulating the DNA damage responses, and adverse effects can occur when it is regulated by marijuana smoke. We evaluated a role of p53 on genotoxic effect and apoptosis in lung cancer cells exposed to marijuana smoke condensates (MSCs). METHODS The p53-related genotoxicity and apoptosis of MSCs were evaluated using in vitro bioassay, viz., comet assay, cytokinesis-block micronucleus assay and apoptosis assay. We used two cell lines with differential p53 expression (p53-wildtype (WT) H460 and p53-null H1299). RESULTS MSCs significantly increased DNA breakages and chromosomal changes in p53-WT H460 and p53-null H1299 cells. The genotoxicity induced by MSCs in p53-null H1299 cells showed greater sensitivity than p53-WT H460 cells. Moreover, MSCs showed a significant increase in reactive oxygen species production and apoptosis. The apoptotic responses induced by MSCs were higher in p53-WT H460 cells than in p53-null H1299 cells. Significantly increased mRNA expression or apoptosis related genes, including p53, caspase-3, and Bax/Bcl-2 ratio were observed in the p53-WT H460 cells exposed to MSCs. CONCLUSIONS These results suggest that MSCs induce DNA/chromosomal damages and apoptosis in human lung cancer cells and p53 plays an important role in the cellular response to MSCs. The present study may have border implications for our understanding of pulmonary diseases.
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Affiliation(s)
- Ha Ryong Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Bo Hee Son
- School of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Soo Yeun Lee
- College of Pharmacy, Keimyung University, Daegu, Korea
| | | | - Seung Min Oh
- Fusion Technology Laboratory, Hoseo University, Asan, Korea
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Juknat A, Pietr M, Kozela E, Rimmerman N, Levy R, Coppola G, Geschwind D, Vogel Z. Differential transcriptional profiles mediated by exposure to the cannabinoids cannabidiol and Δ9-tetrahydrocannabinol in BV-2 microglial cells. Br J Pharmacol 2012; 165:2512-28. [PMID: 21542829 DOI: 10.1111/j.1476-5381.2011.01461.x] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND AND PURPOSE Apart from their effects on mood and reward, cannabinoids exert beneficial actions such as neuroprotection and attenuation of inflammation. The immunosuppressive activity of cannabinoids has been well established. However, the underlying mechanisms are largely unknown. We previously showed that the psychoactive cannabinoid Δ(9) -tetrahydrocannabinol (THC) and the non-psychoactive cannabidiol (CBD) differ in their anti-inflammatory signalling pathways. EXPERIMENTAL APPROACH To characterize the transcriptional effects of CBD and THC, we treated BV-2 microglial cells with these compounds and performed comparative microarray analysis using the Illumina MouseRef-8 BeadChip platform. Ingenuity Pathway Analysis was performed to identify functional subsets of genes and networks regulated by CBD and/or THC. KEY RESULTS Overall, CBD altered the expression of many more genes; from the 1298 transcripts found to be differentially regulated by the treatments, 680 gene probe sets were up-regulated by CBD and 58 by THC, and 524 gene products were down-regulated by CBD and only 36 by THC. CBD-specific gene expression profile showed changes associated with oxidative stress and glutathione depletion, normally occurring under nutrient limiting conditions or proteasome inhibition and involving the GCN2/eIF2α/p8/ATF4/CHOP-TRIB3 pathway. Furthermore, CBD-stimulated genes were shown to be controlled by nuclear factors known to be involved in the regulation of stress response and inflammation, mainly via the (EpRE/ARE)-Nrf2/ATF4 system and the Nrf2/Hmox1 axis. CONCLUSIONS AND IMPLICATIONS These observations indicated that CBD, but much less than THC, induced a cellular stress response in microglial cells and suggested that this effect could underlie its anti-inflammatory activity. LINKED ARTICLES This article is part of a themed section on Cannabinoids in Biology and Medicine. To view the other articles in this section visit http://dx.doi.org/10.1111/bph.2012.165.issue-8. To view Part I of Cannabinoids in Biology and Medicine visit http://dx.doi.org/10.1111/bph.2011.163.issue-7.
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Affiliation(s)
- Ana Juknat
- The Dr. Miriam and Sheldon G. Adelson Center for the Biology of Addictive Diseases, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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The G1359A-CNR1 gene polymorphism is associated to glioma in Spanish patients. Clin Transl Oncol 2012; 12:825-8. [DOI: 10.1007/s12094-010-0604-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Dual Neuroprotective and Neurotoxic Effects of Cannabinoid Drugs in Vitro. Cell Mol Neurobiol 2010; 31:195-202. [DOI: 10.1007/s10571-010-9604-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2010] [Accepted: 09/20/2010] [Indexed: 10/18/2022]
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Molecular mechanisms involved in the antitumor activity of cannabinoids on gliomas: role for oxidative stress. Cancers (Basel) 2010; 2:1013-26. [PMID: 24281104 PMCID: PMC3835116 DOI: 10.3390/cancers2021013] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2010] [Revised: 05/14/2010] [Accepted: 05/17/2010] [Indexed: 11/17/2022] Open
Abstract
Cannabinoids, the active components of Cannabis sativa, have been shown to exert antiproliferative and proapoptotic effects on a wide spectrum of tumor cells and tissues. Of interest, cannabinoids have displayed great potency in reducing the growth of glioma tumors, one of the most aggressive CNS tumors, either in vitro or in animal experimental models curbing the growth of xenografts generated by subcutaneous or intrathecal injection of glioma cells in immune-deficient mice. Cannabinoids appear to be selective antitumoral agents as they kill glioma cells without affecting the viability of non-transformed cells. This review will summarize the anti-cancer properties that cannabinoids exert on gliomas and discuss their potential action mechanisms that appear complex, involving modulation of multiple key cell signaling pathways and induction of oxidative stress in glioma cells.
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Wu HY, Chang AC, Wang CC, Kuo FH, Lee CY, Liu DZ, Jan TR. Cannabidiol induced a contrasting pro-apoptotic effect between freshly isolated and precultured human monocytes. Toxicol Appl Pharmacol 2010; 246:141-7. [PMID: 20471992 DOI: 10.1016/j.taap.2010.05.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2010] [Revised: 04/28/2010] [Accepted: 05/07/2010] [Indexed: 11/30/2022]
Abstract
It has been documented that cannabidiol (CBD) induced apoptosis in a variety of transformed cells, including lymphocytic and monocytic leukemias. In contrast, a differential sensitivity between normal lymphocytes and monocytes to CBD-mediated apoptosis has been reported. The present study investigated the pro-apoptotic effect of CBD on human peripheral monocytes that were either freshly isolated or precultured for 72h. CBD markedly enhanced apoptosis of freshly isolated monocytes in a time- and concentration-dependent manner, whereas precultured monocytes were insensitive. By comparison, both cells were sensitive to doxorubicin-induced apoptosis. CBD significantly diminished the cellular thiols and glutathione in freshly isolated monocytes. The apoptosis induced by CBD was abrogated in the presence of N-acetyl-L-cysteine, a precursor of glutathione. In addition, precultured monocytes contained a significantly greater level of glutathione and heme oxygenase-1 (HO-1) compared to the freshly isolated cells. The HO-1 competitive inhibitor zinc protoporphyrin partially but significantly restored the sensitivity of precultured monocytes to CBD-mediated apoptosis. Collectively, our results demonstrated a contrasting pro-apoptotic effect of CBD between precultured and freshly isolated monocytes, which was closely associated with the cellular level of glutathione and the antioxidative capability of the cells.
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Affiliation(s)
- Hsin-Ying Wu
- Department and Graduate Institute of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, Taipei, Taiwan
| | - An-Chi Chang
- Department and Graduate Institute of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, Taipei, Taiwan
| | - Chia-Chi Wang
- Department and Graduate Institute of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, Taipei, Taiwan
| | - Fu-Hua Kuo
- Department and Graduate Institute of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, Taipei, Taiwan
| | - Chi-Ya Lee
- Department and Graduate Institute of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, Taipei, Taiwan
| | - Der-Zen Liu
- Graduate Institute of Biomedical Materials and Engineering, Taipei Medical University, Taipei, Taiwan
| | - Tong-Rong Jan
- Department and Graduate Institute of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, Taipei, Taiwan
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Oesch S, Gertsch J. Cannabinoid receptor ligands as potential anticancer agents — high hopes for new therapies? J Pharm Pharmacol 2010. [DOI: 10.1211/jpp.61.07.0002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Abstract
Objectives
The endocannabinoid system is an endogenous lipid signalling network comprising arachidonic-acid-derived ligands, cannabinoid (CB) receptors, transporters and endocannabinoid degrading enzymes. The CB1 receptor is predominantly expressed in neurons but is also co-expressed with the CB2 receptor in peripheral tissues. In recent years, CB receptor ligands, including Δ9-tetrahydrocannabinol, have been proposed as potential anticancer agents.
Key findings
This review critically discusses the pharmacology of CB receptor activation as a novel therapeutic anticancer strategy in terms of ligand selectivity, tissue specificity and potency. Intriguingly, antitumour effects mediated by cannabinoids are not confined to inhibition of cancer cell proliferation; cannabinoids also reduce angiogenesis, cell migration and metastasis, inhibit carcinogenesis and attenuate inflammatory processes. In the last decade several new selective CB1 and CB2 receptor agents have been described, but most studies in the area of cancer research have used non-selective CB ligands. Moreover, many of these ligands exert prominent CB receptor-independent pharmacological effects, such as activation of the G-protein-coupled receptor GPR55, peroxisome proliferator-activated receptor gamma and the transient receptor potential vanilloid channels.
Summary
The role of the endocannabinoid system in tumourigenesis is still poorly understood and the molecular mechanisms of cannabinoid anticancer action need to be elucidated. The development of CB2-selective anticancer agents could be advantageous in light of the unwanted central effects exerted by CB1 receptor ligands. Probably the most interesting question is whether cannabinoids could be useful in chemoprevention or in combination with established chemotherapeutic agents.
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Affiliation(s)
- Susanne Oesch
- University Children's Hospital Divisions of Clinical Chemistry and Oncology, University of Zürich, Switzerland
| | - Jürg Gertsch
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Zürich, Switzerland
- Institute of Biochemistry and Molecular Medicine, University of Bern, Switzerland
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Inhibition of human tumour prostate PC-3 cell growth by cannabinoids R(+)-Methanandamide and JWH-015: involvement of CB2. Br J Cancer 2009; 101:940-50. [PMID: 19690545 PMCID: PMC2743360 DOI: 10.1038/sj.bjc.6605248] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Background: We have previously shown that cannabinoids induce growth inhibition and apoptosis in prostate cancer PC-3 cells, which express high levels of cannabinoid receptor types 1 and 2 (CB1 and CB2). In this study, we investigated the role of CB2 receptor in the anti-proliferative action of cannabinoids and the signal transduction triggered by receptor ligation. Methods: The human prostate cancer cell lines, namely PC-3, DU-145 and LNCaP, were used for this study. Cell proliferation was measured using MTT proliferation assay, [3H]-thymidine incorporation assay and cell-cycle study by flow cytometry. Ceramide quantification was performed using the DAG kinase method. The CB2 receptor was silenced with specific small interfering RNA, and was blocked pharmacologically with SR 144528. In vivo studies were conducted by the induction of prostate xenograft tumours in nude mice. Results: We found that the anandamide analogue, R(+)-Methanandamide (MET), as well as JWH-015, a synthetic CB2 agonist, exerted anti-proliferative effects in PC-3 cells. R(+)-Methanandamide- and JWH-015-induced cell death was rescued by treatment with the CB2 receptor antagonist, SR 144528. Downregulation of CB2 expression reversed the effects of JWH-015, confirming the involvement of CB2 in the pro-apoptotic effect of cannabinoids. Further analysing the mechanism of JWH-015-induced cell growth inhibition, we found that JWH-015 triggered a de novo synthesis of ceramide, which was involved in cannabinoid-induced cell death, insofar as blocking ceramide synthesis with Fumonisin B1 reduced cell death. Signalling pathways activated by JWH-015 included JNK (c-Jun N-terminal kinase) activation and Akt inhibition. In vivo treatment with JWH-015 caused a significant reduction in tumour growth in mice. Conclusions: This study defines the involvement of CB2-mediated signalling in the in vivo and in vitro growth inhibition of prostate cancer cells and suggests that CB2 agonists have potential therapeutic interest and deserve to be explored in the management of prostate cancer.
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Cudaback E, Stella N. Targeting Astrocytomas and Invading Immune Cells with Cannabinoids: A Promising Therapeutic Avenue. Mol Neurobiol 2007; 36:36-44. [DOI: 10.1007/s12035-007-0016-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2007] [Accepted: 05/11/2007] [Indexed: 01/07/2023]
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Howlett AC, Mukhopadhyay S, Norford DC. Endocannabinoids and reactive nitrogen and oxygen species in neuropathologies. J Neuroimmune Pharmacol 2006; 1:305-16. [PMID: 18040807 DOI: 10.1007/s11481-006-9022-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2006] [Accepted: 05/16/2006] [Indexed: 01/25/2023]
Abstract
Neuropathologies that affect our population include ischemic stroke and neurodegenerative diseases of immune origin, including multiple sclerosis. The endocannabinoid system in the brain, including agonists anandamide (arachidonyl ethanolamide) and 2-arachidonoylglycerol, and the CB1 and CB2 cannabinoid receptors, has been implicated in the pathophysiology of these disease states, and can be a target for therapeutic interventions. This review concentrates on cellular signal transduction pathways believed to be involved in the cellular damage.
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Affiliation(s)
- Allyn C Howlett
- Neuroscience of Drug Abuse Research Program, 208 Julius L. Chambers Biomedical/Biotechnology Research Institute, North Carolina Central University, 700 George Street, Durham, NC 27707, USA.
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Bahr BA, Karanian DA, Makanji SS, Makriyannis A. Targeting the endocannabinoid system in treating brain disorders. Expert Opin Investig Drugs 2006; 15:351-65. [PMID: 16548785 DOI: 10.1517/13543784.15.4.351] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Recent cannabinoid research has a primary focus on developing therapeutics against human diseases. Many studies on cannabinoids indicate important progress for protection against several neurodegenerative disorders. Agonists of cannabinoid receptors activate signalling pathways in the brain that are linked to neuronal repair and cell maintenance, and endogenous ligands can also activate neuroprotective responses. These endocannabinoids are bioactive fatty acid amides and esters that are synthesised in the brain and include arachidonoyl ethanolamide (anandamide) and 2-arachidonoyl glycerol. Endocannabinoids are released in response to pathogenic events, thus representing a potential compensatory repair mechanism. Enhancing this on-demand action of endocannabinoids is a strategy with which to promote endogenous repair signalling. For such enhancement, considerable work has gone into modulating the availability of endocannabinoids by blocking the processes of their deactivation. The targets include the anandamide-hydrolysing enzyme fatty acid amide hydrolase, the carrier-mediated anandamide transport system and 2-arachidonoyl glycerol-deactivating enzyme monoacylglycerol lipase. The activity of endocannabinoids is terminated through transport and degradation and, accordingly, selective inhibitors of these processes effectively exploit the protective nature of cannabinergic responses. This review highlights recent studies implicating the endocannabinoid system in neuroprotection against different disorders of the CNS.
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Affiliation(s)
- Ben A Bahr
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, USA.
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Chang L, Cloak C, Yakupov R, Ernst T. Combined and independent effects of chronic marijuana use and HIV on brain metabolites. J Neuroimmune Pharmacol 2006; 1:65-76. [PMID: 18040792 PMCID: PMC4899040 DOI: 10.1007/s11481-005-9005-z] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The effects of chronic marijuana (MJ) use on brain function remain controversial. Because MJ is often used by human immunodeficiency virus (HIV) patients, the aim of this study was to evaluate whether chronic MJ use and HIV infection are associated with interactive or additive effects on brain chemistry and cognitive function. We evaluated 96 subjects (30 seronegative nondrug users, 24 MJ users, 21 HIV without MJ use, 21 HIV + MJ) using proton magnetic resonance spectroscopy and a battery of neuropsychological tests. The two primarily abstinent MJ user groups showed no significant differences on calculated estimates of lifetime grams of delta9-tetrahydrocannabinol exposure, despite some differences in usage pattern. The two HIV groups also had similar HIV disease severity (CD4 cell count, plasma viral load, HIV dementia staging, Karnofsky score). On two-way analyses of covariance, HIV infection (independent of MJ) was associated with trends for reduced N-acetyl aspartate (NA) in the parietal white matter and increased choline compounds (CHO) in the basal ganglia. In contrast, MJ (independent of HIV) was associated with decreased basal ganglia NA (-5.5%, p = 0.05), CHO (-10.6%, p = 0.04), and glutamate (-9.5%, p = 0.05), with increased thalamic creatine (+6.1%, p = 0.05). HIV + MJ was associated with normalization of the reduced glutamate in frontal white matter (interaction p = 0.01). After correction for age, education, or mood differences, MJ users had no significant abnormalities on neuropsychological test performance, and HIV subjects only had slower reaction times. These findings suggest chronic MJ use may lead to decreased neuronal and glial metabolites, but may normalize the decreased glutamate in HIV patients.
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Affiliation(s)
- L Chang
- Department of Medicine, John A. Burns School of Medicine, Queen's University Tower, 1356 Lusitana Street, Honolulu, HI 96813, USA.
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