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Romero A, Rey-Campos M, Pereiro P, Librán-Pérez M, Figueras A, Novoa B. Transcriptomic analysis of turbot (Scophthalmus maximus) treated with zymosan a reveals that lncRNAs and inflammation-related genes mediate the protection conferred against Aeromonas salmonicida. FISH & SHELLFISH IMMUNOLOGY 2024; 147:109456. [PMID: 38369070 DOI: 10.1016/j.fsi.2024.109456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 02/14/2024] [Accepted: 02/15/2024] [Indexed: 02/20/2024]
Abstract
Aeromonas salmonicida is one of the most harmful pathogens in finfish aquaculture worldwide. Immunostimulants such as β-glucans are used to enhance the immunity of cultured fish. However, their effects on fish physiology are not completely understood. In the present work, we evaluated the effect of a single intraperitoneal (ip) injection of zymosan A on fish survival against A. salmonicida infection. A single administration of this compound protected fish against A. salmonicida challenge and reduce the bacterial load in the head kidney one week after its administration. Transcriptome analyses of head kidney samples revealed several molecular mechanisms involved in the protection conferred by zymosan A and their regulation by long noncoding RNAs. The transcriptome profile of turbot exposed only to zymosan A was practically unaltered one week after ip injection. However, the administration of this immunostimulant induced significant transcriptomic changes once the fish were in contact with the bacteria and increased the survival of the infected turbot. Our results suggest that the restraint of the infection-induced inflammatory response, the management of apoptotic cell death, cell plasticity and cellular processes involving cytoskeleton dynamics support the protective effects of zymosan A. All this information provides insights on the cellular and molecular mechanisms involved in the protective effects of this widely used immunostimulant.
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Affiliation(s)
- Alejandro Romero
- Instituto de Investigaciones Marinas (CSIC), Eduardo Cabello 6, 36208, Vigo, Spain
| | - Magalí Rey-Campos
- Instituto de Investigaciones Marinas (CSIC), Eduardo Cabello 6, 36208, Vigo, Spain
| | - Patricia Pereiro
- Instituto de Investigaciones Marinas (CSIC), Eduardo Cabello 6, 36208, Vigo, Spain
| | - Marta Librán-Pérez
- Instituto de Investigaciones Marinas (CSIC), Eduardo Cabello 6, 36208, Vigo, Spain
| | - Antonio Figueras
- Instituto de Investigaciones Marinas (CSIC), Eduardo Cabello 6, 36208, Vigo, Spain
| | - Beatriz Novoa
- Instituto de Investigaciones Marinas (CSIC), Eduardo Cabello 6, 36208, Vigo, Spain.
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β-Glucan Induces Protective Trained Immunity against Mycobacterium tuberculosis Infection: A Key Role for IL-1. Cell Rep 2021; 31:107634. [PMID: 32433977 PMCID: PMC7242907 DOI: 10.1016/j.celrep.2020.107634] [Citation(s) in RCA: 158] [Impact Index Per Article: 52.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 01/08/2020] [Accepted: 04/21/2020] [Indexed: 11/24/2022] Open
Abstract
β-glucan is a potent inducer of epigenetic and functional reprogramming of innate immune cells, a process called “trained immunity,” resulting in an enhanced host response against secondary infections. We investigate whether β-glucan exposure confers protection against pulmonary Mycobacterium tuberculosis (Mtb) infection. β-glucan induces trained immunity via histone modifications at gene promoters in human monocytes, which is accompanied by the enhanced production of proinflammatory cytokines upon secondary Mtb challenge and inhibition of Mtb growth. Mice treated with β-glucan are significantly protected against pulmonary Mtb infection, which is associated with the expansion of hematopoietic stem and progenitor cells in the bone marrow and increased myelopoiesis. The protective signature of β-glucan is mediated via IL-1 signaling, as β-glucan shows no protection in mice lacking a functional IL-1 receptor (IL1R−/−). The administration of β-glucan may be used as a novel strategy in the treatment of mycobacterial infections and possibly as an adjuvant to improve anti-tuberculosis vaccines. β-glucan induces protective trained immunity in human monocytes infected with Mtb β-glucan induces protective trained immunity in mice infected with Mtb β-glucan-mediated protection against Mtb is dependent on IL-1 signaling β-glucan increases expansion of hematopoietic progenitors and myelopoiesis via IL-1
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Zhou J, Lv J, Carlson C, Liu H, Wang H, Xu T, Wu F, Song C, Wang X, Wang T, Qian Z. Trained immunity contributes to the prevention of Mycobacterium tuberculosis infection, a novel role of autophagy. Emerg Microbes Infect 2021; 10:578-588. [PMID: 33666534 PMCID: PMC8018485 DOI: 10.1080/22221751.2021.1899771] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Mycobacterium tuberculosis (M. tuberculosis) is the pathogen which causes tuberculosis (TB), a significant human public health threat. Co-infection of M. tuberculosis and the human immunodeficiency virus (HIV), emergence of drug resistant M. tuberculosis, and failure to develop highly effective TB vaccines have limited control of the TB epidemic. Trained immunity is an enhanced innate immune response which functions independently of the adaptive/acquired immune system and responds non-specifically to reinfection with invading agents. Recently, several studies have found trained immunity has the capability to control and eliminate M. tuberculosis infection. Over the past decades, however, the consensus was adaptive immunity is the only protective mechanism by which hosts inhibit M. tuberculosis growth. Furthermore, autophagy plays an essential role in the development of trained immunity. Further investigation of trained immunity, M. tuberculosis infection, and the role of autophagy in this process provide new possibilities for vaccine development. In this review, we present the general characteristics of trained immunity and autophagy. We additionally summarize several examples where initiation of trained immunity contributes to the prevention of M. tuberculosis infection and propose future directions for research in this area.
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Affiliation(s)
- Jie Zhou
- Anhui Provincial Key Laboratory of Immunology in Chronic Diseases, Anhui Provincial Key Laboratory of Infection and Immunology, and Department of Laboratory Medicine, Bengbu Medical College, Bengbu, People's Republic of China
| | - Jingzhu Lv
- Anhui Provincial Key Laboratory of Immunology in Chronic Diseases, Anhui Provincial Key Laboratory of Infection and Immunology, and Department of Laboratory Medicine, Bengbu Medical College, Bengbu, People's Republic of China
| | - Chelsea Carlson
- Department of Internal Medicine, University of Arizona, Phoenix, AZ, USA
| | - Hui Liu
- Anhui Provincial Key Laboratory of Immunology in Chronic Diseases, Anhui Provincial Key Laboratory of Infection and Immunology, and Department of Laboratory Medicine, Bengbu Medical College, Bengbu, People's Republic of China
| | - Hongtao Wang
- Anhui Provincial Key Laboratory of Immunology in Chronic Diseases, Anhui Provincial Key Laboratory of Infection and Immunology, and Department of Laboratory Medicine, Bengbu Medical College, Bengbu, People's Republic of China
| | - Tao Xu
- Anhui Provincial Key Laboratory of Immunology in Chronic Diseases, Anhui Provincial Key Laboratory of Infection and Immunology, and Department of Laboratory Medicine, Bengbu Medical College, Bengbu, People's Republic of China
| | - Fengjiao Wu
- Anhui Provincial Key Laboratory of Immunology in Chronic Diseases, Anhui Provincial Key Laboratory of Infection and Immunology, and Department of Laboratory Medicine, Bengbu Medical College, Bengbu, People's Republic of China
| | - Chuanwang Song
- Anhui Provincial Key Laboratory of Immunology in Chronic Diseases, Anhui Provincial Key Laboratory of Infection and Immunology, and Department of Laboratory Medicine, Bengbu Medical College, Bengbu, People's Republic of China
| | - Xiaojing Wang
- Anhui Clinical and Preclinical Key Laboratory of Respiratory Disease, Department of Respiration, First Affiliated Hospital, Bengbu Medical College, Bengbu, People's Republic of China
| | - Ting Wang
- Department of Internal Medicine, University of Arizona, Phoenix, AZ, USA
| | - Zhongqing Qian
- Anhui Provincial Key Laboratory of Immunology in Chronic Diseases, Anhui Provincial Key Laboratory of Infection and Immunology, and Department of Laboratory Medicine, Bengbu Medical College, Bengbu, People's Republic of China
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4
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Quintin J. Fungal mediated innate immune memory, what have we learned? Semin Cell Dev Biol 2018; 89:71-77. [PMID: 29842944 DOI: 10.1016/j.semcdb.2018.05.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Revised: 05/23/2018] [Accepted: 05/25/2018] [Indexed: 10/01/2022]
Abstract
The binary classification of mammalian immune memory is now obsolete. Innate immune cells carry memory characteristics. The overall capacity of innate immune cells to remember and alter their responses is referred as innate immune memory and the induction of a non-specific memory resulting in an enhanced immune status is termed "trained immunity". Historically, trained immunity was first described as triggered by the human fungal pathogen Candida albicans. Since, numerous studies have accumulated and deciphered the main characteristics of trained immunity mediated by fungi and fungal components. This review aims at presenting the newly described aspect of memory in innate immunity with an emphasis on the historically fungal mediated one, covering the known molecular mechanisms associated with training. In addition, the review uncovers the numerous non-specific effect that β-glucans trigger in the context of infectious diseases and septicaemia, inflammatory diseases and cancer.
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Affiliation(s)
- Jessica Quintin
- Immunology of Fungal Infections, Department of Mycology, Institut Pasteur, 25, rue du Docteur Roux, 75015, Paris, France.
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Ayeka PA. Potential of Mushroom Compounds as Immunomodulators in Cancer Immunotherapy: A Review. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2018; 2018:7271509. [PMID: 29849725 PMCID: PMC5937616 DOI: 10.1155/2018/7271509] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 02/12/2018] [Accepted: 03/15/2018] [Indexed: 12/22/2022]
Abstract
Since time immemorial, plants and their compounds have been used in the treatment and management of various ailments. Currently, most of conventional drugs used for treatment of diseases are either directly or indirectly obtained from plant sources. The fungal group of plants is of significance, which not only provides food directly to man but also has been source of important drugs. For instance, commonly used antibiotics are derived from fungi. Fungi have also been utilized in the food industry, baking, and alcohol production. Apart from the economic importance of the microfungi, macrofungi have been utilized directly as food, which is usually got from their fruiting bodies, commonly known as mushrooms. Due to their richness in proteins, minerals, and other nutrients, mushrooms have also been associated with boosting the immune system. This makes mushrooms an important food source, especially for vegetarians and immunosuppressed individuals including the HIV/AIDS persons. In complementary and alternative medicines (CAMs), mushrooms are increasingly being accepted for treatment of various diseases. Mushrooms have been shown to have the ability to stimulate the immune system, modulate humoral and cellular immunity, and potentiate antimutagenic and antitumorigenic activity, as well as rejuvenating the immune system weakened by radiotherapy and chemotherapy in cancer treatment. This potential of mushrooms, therefore, qualifies them as candidates for immunomodulation and immunotherapy in cancer and other diseases' treatment. However, a critical review on mushroom's immune modulating potential in cancer has not been sufficiently addressed. This review puts forward insights into the immune activities of mushroom associated with anticancer activities.
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Affiliation(s)
- Peter Amwoga Ayeka
- Department of Biological Sciences, Faculty of Science, Egerton University, P.O. Box 536-20115, Egerton, Kenya
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Affiliation(s)
- K.F. Cutting
- Clinical research consultant; Hertfordshire, Tissue Viability Specialist; First Community Health and Care, Surrey
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Lima CU, Gris EF, Karnikowski MG. Antimicrobial properties of the mushroom Agaricus blazei – integrative review. REVISTA BRASILEIRA DE FARMACOGNOSIA-BRAZILIAN JOURNAL OF PHARMACOGNOSY 2016. [DOI: 10.1016/j.bjp.2016.05.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Thompson IJ, Oyston PCF, Williamson DE. Potential of the β-glucans to enhance innate resistance to biological agents. Expert Rev Anti Infect Ther 2014; 8:339-52. [DOI: 10.1586/eri.10.10] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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9
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Brucella β 1,2 cyclic glucan is an activator of human and mouse dendritic cells. PLoS Pathog 2012; 8:e1002983. [PMID: 23166489 PMCID: PMC3499565 DOI: 10.1371/journal.ppat.1002983] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Accepted: 09/06/2012] [Indexed: 02/02/2023] Open
Abstract
Bacterial cyclic glucans are glucose polymers that concentrate within the periplasm of alpha-proteobacteria. These molecules are necessary to maintain the homeostasis of the cell envelope by contributing to the osmolarity of Gram negative bacteria. Here, we demonstrate that Brucella β 1,2 cyclic glucans are potent activators of human and mouse dendritic cells. Dendritic cells activation by Brucella β 1,2 cyclic glucans requires TLR4, MyD88 and TRIF, but not CD14. The Brucella cyclic glucans showed neither toxicity nor immunogenicity compared to LPS and triggered antigen-specific CD8+ T cell responses in vivo. These cyclic glucans also enhanced antigen-specific CD4+ and CD8+ T cell responses including cross-presentation by different human DC subsets. Brucella β 1,2 cyclic glucans increased the memory CD4+ T cell responses of blood mononuclear cells exposed to recombinant fusion proteins composed of anti-CD40 antibody and antigens from both hepatitis C virus and Mycobacterium tuberculosis. Thus cyclic glucans represent a new class of adjuvants, which might contribute to the development of effective antimicrobial therapies. Vaccination is one of the key strategies to fight against infectious diseases though numerous diseases remain without appropriate vaccines. The challenge is to generate potent vaccines capable of inducing long-lasting immunity in humans. Successful vaccines include adjuvants that enhance and appropriately skew the immune response to given antigens. The development of new adjuvants for human vaccines has become an expanding field of research. Here we show that bacterial cyclic β-glucans can be used to enhance cellular immunity by activation of dendritic cells, from both mice and humans. In particular, Cyclic-β glucans enhance the in vitro memory CD4+ T cell responses of patients suffering from hepatitis C and tuberculosis. Thus cyclic-β glucans are new adjuvants, which might be used in vaccines.
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Huang TT, Ojcius DM, Young JD, Wu YH, Ko YF, Wong TY, Wu CY, Lu CC, Lai HC. The anti-tumorigenic mushroom Agaricus blazei Murill enhances IL-1β production and activates the NLRP3 inflammasome in human macrophages. PLoS One 2012; 7:e41383. [PMID: 22844468 PMCID: PMC3402498 DOI: 10.1371/journal.pone.0041383] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Accepted: 06/20/2012] [Indexed: 01/31/2023] Open
Abstract
Agaricus blazei Murill (AbM) has been reported to possess immune activity against tumors and infections through stimulation of mononuclear phagocytes. Recently, AbM extract was shown to induce the production of the pro-inflammatory cytokine, interleukin-1β (IL-1β), in human monocytes. IL-1β is a key pro-inflammatory cytokine produced by activated macrophages and monocytes and its secretion is strictly controlled by the inflammasome. The purpose of this study is to investigate the effect of AbM water extracts on the regulation of IL-1β production and activation of the NLRP3 inflammasome in human THP-1 macrophages. The NLRP3 inflammasome consists of an NLRP3 receptor, an adaptor protein called ASC, and the inflammatory protease, caspase-1. Typically, stimulation of immune cells with microbial products results in production of pro-IL-1β, but a second stress-related signal activates the inflammasome and caspase-1, leading to processing and secretion of IL-1β. Our results show that AbM enhances transcription of IL-1β and triggers NLRP3 inflammasome-mediated IL-1β secretion in human THP-1 macrophages. AbM-mediated IL-1β secretion was markedly reduced in macrophages deficient in NLRP3 and ASC, demonstrating that the NLRP3 inflammasome is essential for AbM-induced IL-1β secretion. In addition, caspase-1 was activated and involved in proteolytic cleavage and secretion of IL-1β in AbM-treated macrophages. AbM-mediated IL-1β secretion also decreased in cells treated with cathepsin B inhibitor, suggesting that AbM can induce the release of cathepsin B. Furthermore, our data show that AbM-induced inflammasome activation requires the release of ATP, binding of extracellular ATP to the purinergic receptor P2X7, the generation of reactive oxygen species, and efflux of potassium. Taken together, these findings reveal that AbM activates the NLRP3 inflammasome via multiple mechanisms, resulting in the secretion of IL-1β.
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Affiliation(s)
- Tsung-Teng Huang
- Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Department of Medical Biotechnology and Laboratory Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Laboratory of Nanomaterials, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Research Center of Bacterial Pathogenesis, Chang Gung University, Taoyuan, Taiwan, Republic of China
| | - David M. Ojcius
- Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Health Sciences Research Institute and School of Natural Sciences, University of California Merced, Merced, California, United States of America
| | - John D. Young
- Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Laboratory of Nanomaterials, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Laboratory of Cellular Physiology and Immunology, Rockefeller University, New York, New York, United States of America
- Biochemical Engineering Research Center, Mingchi University of Technology, Taipei, Taiwan, Republic of China
| | - Yi-Hui Wu
- Cancer Research Center, National Cheng Kung University Hospital, Tainan, Taiwan, Republic of China
| | - Yun-Fei Ko
- Biochemical Engineering Research Center, Mingchi University of Technology, Taipei, Taiwan, Republic of China
| | - Tsui-Yin Wong
- Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Laboratory of Nanomaterials, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Research Center of Bacterial Pathogenesis, Chang Gung University, Taoyuan, Taiwan, Republic of China
| | - Cheng-Yeu Wu
- Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Laboratory of Nanomaterials, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Research Center of Bacterial Pathogenesis, Chang Gung University, Taoyuan, Taiwan, Republic of China
| | - Chia-Chen Lu
- Department of Respiratory Therapy, Fu Jen Catholic University, Taipei, Taiwan, Republic of China
| | - Hsin-Chih Lai
- Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Department of Medical Biotechnology and Laboratory Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Research Center of Bacterial Pathogenesis, Chang Gung University, Taoyuan, Taiwan, Republic of China
- * E-mail:
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Wisitrassameewong K, Karunarathna SC, Thongklang N, Zhao R, Callac P, Moukha S, Férandon C, Chukeatirote E, Hyde KD. Agaricus subrufescens: A review. Saudi J Biol Sci 2012; 19:131-46. [PMID: 23961172 PMCID: PMC3730566 DOI: 10.1016/j.sjbs.2012.01.003] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Revised: 01/09/2012] [Accepted: 01/09/2012] [Indexed: 01/13/2023] Open
Abstract
Medicinal mushrooms have currently become a hot issue due to their various therapeutic properties. Of these, Agaricus subrufescens, also known as the "almond mushroom", has long been valued by many societies (i.e., Brazil, China, France, and USA). Since its discovery in 1893, this mushroom has been cultivated throughout the world, especially in Brazil where several strains of A. subrufescens have been developed and used as health food and alternative medicine. This article presents up-to-date information on this mushroom including its taxonomy and health promoting benefits. Medicinal properties of A. subrufescens are emphasized in several studies which are reviewed here. In addition, safety issues concerning the use of this fungus will be discussed.
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Affiliation(s)
- Komsit Wisitrassameewong
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
- Mushroom Research Foundation, Chiang Mai 50150, Thailand
| | - Samantha C. Karunarathna
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
- Mushroom Research Foundation, Chiang Mai 50150, Thailand
| | | | - Ruilin Zhao
- Faculty of Biology Conservation, Southwest Forestry University, Bailongsi, Kunming, Yunnan 650224, China
| | - Philippe Callac
- INRA, UR1264, Mycologie et Sécurité des Aliments, BP81, 33883 Villenave d Ornon, France
| | - Serge Moukha
- INRA, UR1264, Mycologie et Sécurité des Aliments, BP81, 33883 Villenave d Ornon, France
- Department of Toxicology, UFR des Sciences, Pharmaceutiques-Université Bordeaux Segalen, 146 rue Léo Saignat, 33076 Bordeaux Cedex, France
| | - Cyril Férandon
- Department of Toxicology, UFR des Sciences, Pharmaceutiques-Université Bordeaux Segalen, 146 rue Léo Saignat, 33076 Bordeaux Cedex, France
| | | | - Kevin D. Hyde
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
- Mushroom Research Foundation, Chiang Mai 50150, Thailand
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The Mushroom Agaricus blazei Murill Elicits Medicinal Effects on Tumor, Infection, Allergy, and Inflammation through Its Modulation of Innate Immunity and Amelioration of Th1/Th2 Imbalance and Inflammation. Adv Pharmacol Sci 2011; 2011:157015. [PMID: 21912538 PMCID: PMC3168293 DOI: 10.1155/2011/157015] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Accepted: 06/23/2011] [Indexed: 11/18/2022] Open
Abstract
The medicinal mushroom Agaricus blazei Murill from the Brazilian rain forest has been used in traditional medicine and as health food for the prevention of a range of diseases, including infection, allergy, and cancer. Other scientists and we have examined whether there is scientific evidence behind such postulations. Agaricus blazei M is rich in the immunomodulating polysaccharides, β-glucans, and has been shown to have antitumor, anti-infection, and antiallergic/-asthmatic properties in mouse models, in addition to anti-inflammatory effects in inflammatory bowel disease patients. These effects are mediated through the mushroom's stimulation of innate immune cells, such as monocytes, NK cells, and dendritic cells, and the amelioration of a skewed Th1/Th2 balance and inflammation.
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Betz BE, Azad AK, Morris JD, Rajaram MVS, Schlesinger LS. β-Glucans inhibit intracellular growth of Mycobacterium bovis BCG but not virulent Mycobacterium tuberculosis in human macrophages. Microb Pathog 2011; 51:233-242. [PMID: 21762773 DOI: 10.1016/j.micpath.2011.06.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Revised: 06/20/2011] [Accepted: 06/23/2011] [Indexed: 11/15/2022]
Abstract
The yeast polysaccharide, β-glucan, has been shown to promote both anti-microbial and anti-tumor activities through its interaction with macrophages. Here we analyzed the effects of an insoluble whole glucan particle (WGP), a 1,3/1,6-β-glucan from Saccharomyces cerevisiae, and a soluble poly-1-6-β-d-glucopyranosyl-1-3-β-d-glucopyranose (PGG), a hydrolytic product of WGP, on the anti-microbial response of human macrophages against mycobacterial infection. Treatment of macrophages with WGP and PGG significantly decreased cell association and intracellular growth of Mycobacterium bovis BCG, but not Mycobacterium tuberculosis (M.tb) when compared to untreated controls. We characterized the influence of β-glucans on the generation of macrophage oxidative products and pro-inflammatory cytokines, two important anti-microbial defense mechanisms. WGP but not PGG treatment enhanced the oxidative response of macrophages as determined by the 2',7'-dichlorofluorescin (DCF) assay. WGP treatment also induced macrophages to produce pro-inflammatory cytokines. The β-glucan receptor, Dectin-1, was found to be involved in the WGP-induced macrophage oxidative burst and intracellular growth inhibition of M. bovis BCG. This report indicates that although some forms of β-glucan are able to stimulate the respiratory burst and cytokine production in human macrophages, and exhibit anti-microbial properties against M. bovis BCG, the β-glucans tested here did not inhibit growth of M.tb within human macrophages.
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Affiliation(s)
- Bret E Betz
- Center for Microbial Interface Biology, The Ohio State University, Columbus, OH 43210, USA
| | - Abul K Azad
- Center for Microbial Interface Biology, The Ohio State University, Columbus, OH 43210, USA.,Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH 43210, USA.,Division of Infectious Diseases, Department of Internal Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Jessica D Morris
- Center for Microbial Interface Biology, The Ohio State University, Columbus, OH 43210, USA
| | - Murugesan V S Rajaram
- Center for Microbial Interface Biology, The Ohio State University, Columbus, OH 43210, USA.,Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH 43210, USA
| | - Larry S Schlesinger
- Center for Microbial Interface Biology, The Ohio State University, Columbus, OH 43210, USA.,Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH 43210, USA.,Division of Infectious Diseases, Department of Internal Medicine, The Ohio State University, Columbus, OH 43210, USA
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14
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The effects of β-glucan isolated from Pleurotus ostreatus on methotrexate treatment in rats with adjuvant arthritis. Rheumatol Int 2009; 31:507-11. [DOI: 10.1007/s00296-009-1258-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2009] [Accepted: 11/28/2009] [Indexed: 10/20/2022]
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16
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Bernardshaw S, Hetland G, Grinde B, Johnson E. An extract of the mushroom Agaricus blazei Murill protects against lethal septicemia in a mouse model of fecal peritonitis. Shock 2008; 25:420-5. [PMID: 16670646 DOI: 10.1097/01.shk.0000209526.58614.92] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Bacterial septicemia is frequently occurring during gastroenterological surgery. Because of increasing problems in hospitals with bacteria developing multiresistance against antibiotics, prophylactic treatment using immunomodulators is interesting. We have examined the putatively anti-infective immunomodulatory action of the edible mushroom, Agaricus blazei Murill (AbM), in an experimental peritonitis model in BALB/c mice. The mice were orally given an extract of AbM or phosphate-buffered saline 1 day before the induction of peritonitis with various concentrations of feces from the mice. The state of septicemia, as measured by the number of colony-forming units of bacteria in blood, and the survival rate of the animals were compared between the groups. Mice that were orally treated with AbM extract before bacterial challenge showed significantly lower levels of septicemia and improved survival rates. Our findings suggest that the AbM extract, when given prophylactically, may improve health. Further studies are needed on humans when considering whether AbM could be used as an alternative treatment modality for patients at risk of contracting serious bacterial peritonitis.
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Rothfuchs AG, Bafica A, Feng CG, Egen JG, Williams DL, Brown GD, Sher A. Dectin-1 interaction with Mycobacterium tuberculosis leads to enhanced IL-12p40 production by splenic dendritic cells. THE JOURNAL OF IMMUNOLOGY 2007; 179:3463-71. [PMID: 17785780 DOI: 10.4049/jimmunol.179.6.3463] [Citation(s) in RCA: 151] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Dectin-1 is a fungal pattern recognition receptor that binds to beta-glucans and triggers cytokine production by facilitating interaction with TLR2 or by directly activating spleen tyrosine kinase (Syk). To assess the possible role of Dectin-1 in the innate response to mycobacteria, we used an in vitro system in which IL-12p40 production is measured in splenic dendritic cells (SpDC) following exposure to live Mycobacterium tuberculosis bacilli. Treatment of SpDC with laminarin or glucan phosphate, two molecules known to block Dectin-1-dependent activity, led to a reduction in M. tuberculosis-induced IL-12p40 as well as IL-12p70 production. Moreover, SpDC from Dectin-1-/- chimeric mice displayed reduced IL-12p40 production in response to mycobacteria when compared with Dectin-sufficient DC. Laminarin treatment also inhibited mycobacterial-induced IL-12p40 production in DC from TLR2-/- mice, arguing that Dectin-1 functions independently of TLR2 signaling in this system. Importantly, a Dectin-1 fusion protein was found to directly bind to live mycobacteria in a laminarin-inhibitable manner indicating the presence of ligands for the receptor in the bacterium and laminarin pretreatment resulted in reduced association of mycobacteria to SpDC. In additional experiments, mycobacterial stimulation was shown to be associated with increased phosphorylation of Syk and this response was inhibited by laminarin. Furthermore, pharmacologic inhibition of Syk reduced the M. tuberculosis-induced IL-12p40 response. Together, these findings support a role for Dectin-1 in promoting M. tuberculosis-induced IL-12p40 production by DC in which the receptor augments bacterial-host cell interaction and enhances the subsequent cytokine response through an unknown mechanism involving Syk signaling.
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Affiliation(s)
- Antonio Gigliotti Rothfuchs
- Immunobiology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
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Bernardshaw S, Hetland G, Ellertsen LK, Tryggestad AMA, Johnson E. An Extract of the Medicinal Mushroom Agaricus blazei Murill Differentially Stimulates Production of Pro-inflammatory Cytokines in Human Monocytes and Human Vein Endothelial Cells in vitro. Inflammation 2006; 29:147-53. [PMID: 17091395 DOI: 10.1007/s10753-006-9010-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
An extract of the edible mushroom Agaricus blazei Murill (AbM) has known antitumor and anti-infection properties, probably mainly by stimulating mononuclear phagocytes of the native immune system. The aim of this work was to study the effect of AbM on the production by human monocytes and human umbilical vein endothelial cells (EC) of pro-inflammatory cytokines (IL-1beta, IL-6, IL-8, TNFalpha), the anti-inflammatory/T regulatory cytokine IL-10 and the pro-Th1 cytokine IL-12. AbM, in concentrations from 1-15%, induced a considerable and dose-dependent increase in production of IL-8, IL-6, TNFalpha and IL-1beta in monocyte cultures. The biosynthesis reached a plateau at a concentration of 10% of AbM, and was most pronounced for the three former cytokines. AbM did also dose-dependently stimulate EC production of IL-8,I L-6 and TNFalpha, but at lower levels compared with the monocytes. AbM did neither induce synthesis of cytokines IL-10 nor IL-12 in monocytes or EC. Our results demonstrate the differential effect of AbM stimulation on the magnitude of pro-inflammatory cytokines produced by monocytes and EC.
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Affiliation(s)
- Soosaipillai Bernardshaw
- Department of Gastroenterological Surgery, Ulleval University Hospital, Kirkeveien 166, 0407 Oslo, Norway
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Bernardshaw S, Johnson E, Hetland G. An extract of the mushroom Agaricus blazei Murill administered orally protects against systemic Streptococcus pneumoniae infection in mice. Scand J Immunol 2005; 62:393-8. [PMID: 16253127 DOI: 10.1111/j.1365-3083.2005.01667.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The aim was to investigate the antibacterial effect of the biologically active and edible mushroom Agaricus blazei Murill (AbM). A water extract of AbM or PBS control was administered orally before or with challenge to NIH/OlaHsd mice, experimentally infected intraperitoneally with the moderately virulent Streptococcus pneumoniae serotype 6B. End points were bacteraemia and survival rate. The AbM extract, protected against systemic S. pneumoniae 6B infection in the mice. It was most effective when given 24 h before inoculation but did also have protective effects when given together with challenge compared with control. The lack of antibiotic effect on pneumococci in vitro and increased levels of cytokines MIP-2 and TNF-alpha in the serum of mice receiving AbM extract, indicated that the protective effect of AbM was due to the involvement of the native immune system. This is the first report of anti-infection effects of AbM in vivo. Our results suggest that AbM extract may be useful as additional prophylactic and possibly therapeutic treatment against bacterial and possibly other infections in humans.
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Affiliation(s)
- S Bernardshaw
- Department of Gastroenterological Surgery, Ulleval University Hospital, Oslo, Norway
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Instanes C, Ormstad H, Rydjord B, Wiker HG, Hetland G. Mould extracts increase the allergic response to ovalbumin in mice. Clin Exp Allergy 2005; 34:1634-41. [PMID: 15479281 DOI: 10.1111/j.1365-2222.2004.02076.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Exposure to moulds in indoor air is thought to induce asthma in susceptible persons. Moulds may contain several potent allergens. However, more importantly, moulds may increase the allergic response to other allergens (adjuvant effect). Previously, we have found that a beta-1,3-glucan from the cell wall of the fungus Sclerotinia sclerotiorum increases the allergic response to the model allergen ovalbumin (OVA) in a mouse model. OBJECTIVE In the present study, we wanted to confirm the adjuvant effect of another beta-1,3-glucan, MacroGard (MG) from baker's yeast in this model. More importantly, we wished to explore the putative effects of extracts from the moulds Cladosporium herbarum (CH) and Penicillium chrysogenum (PC) using the very same model as used to explore effects of beta-glucans. METHODS Groups of eight Balb/c mice were injected with OVA alone, OVA+extract or OVA+MG, into one footpad. On day 21, all mice were reinjected with OVA, before exsanguination on day 26. The levels of OVA-specific IgE, IgG1 and IgG2a in serum were measured by ELISA. RESULTS Compared with OVA alone, OVA+MG, OVA+CH extract and OVA+PC extract increased OVA-specific IgE and IgG1 levels significantly. For all groups, the levels of IgG2a anti-OVA remained similar to those of the OVA-alone group. CONCLUSIONS Our results show that extracts from CH and PC, and the beta-1,3/1,6-glucan from baker's yeast have adjuvant effects on the allergic response in mice.
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Affiliation(s)
- C Instanes
- Norwegian Institute of Public Health, Division of Environmental Medicine, Nydalen, Oslo, Norway.
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Holten-Andersen L, Doherty TM, Korsholm KS, Andersen P. Combination of the cationic surfactant dimethyl dioctadecyl ammonium bromide and synthetic mycobacterial cord factor as an efficient adjuvant for tuberculosis subunit vaccines. Infect Immun 2004; 72:1608-17. [PMID: 14977968 PMCID: PMC356055 DOI: 10.1128/iai.72.3.1608-1617.2004] [Citation(s) in RCA: 129] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Recombinant, immunodominant antigens derived from Mycobacterium tuberculosis can be used to effectively vaccinate against subsequent infection. However, the efficacy of these recombinant proteins is dependent on the adjuvant used for their delivery. This problem affects many potential vaccines, not just those for tuberculosis, so the discovery of adjuvants that can promote the development of cell-mediated immunity is of great interest. We have previously shown that the combination of the cationic surfactant dimethyl dioctadecyl ammonium bromide and the immunomodulator modified lipid A synergistically potentiates Th1 T-cell responses. Here we report a screening program for other adjuvants with reported Th1-promoting activity and identify a second novel adjuvant formulation that drives the development of Th1 responses with an extremely high efficacy. The combination of dimethyl dioctadecyl ammonium bromide and the synthetic cord factor trehalose dibehenate promotes strong protective immune responses, without overt toxicity, against M. tuberculosis infection in a vaccination model and thus appears to be a very promising candidate for the development of human vaccines.
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Affiliation(s)
- L Holten-Andersen
- Department of Infectious Disease Immunology, Statens Serum Institut, DK-2300 Copenhagen, Denmark
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Hetland G, Sandven P. beta-1,3-Glucan reduces growth of Mycobacterium tuberculosis in macrophage cultures. FEMS IMMUNOLOGY AND MEDICAL MICROBIOLOGY 2002; 33:41-5. [PMID: 11985967 DOI: 10.1111/j.1574-695x.2002.tb00570.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The effect of beta-1,3-D-glucans SSG, from Sclerotinia sclerotiorum, or soluble (sMG) or particulate (pMG) MacroGard from baker's yeast on growth of Mycobacterium tuberculosis H37Rv in cultures of peritoneal macrophages from BALB/c mice was examined. After 24 h intracellular bacteria from lysed macrophages were cultured and the number of cfu counted. SSG given with challenge, but not 24 h after, reduced the number of M. tuberculosis cfu significantly. pMG, but not sMG, given with challenge had an even stronger inhibitory effect, which was enhanced after serum opsonization of the particles. The effect of serum-treated pMG was abrogated by addition of a monoclonal antibody to CD11b. The results indicate that beta-glucans inhibit growth of M. tuberculosis in host cells in vitro, probably due to cellular stimulation and/or competitive inhibition of uptake of bacteria via CR3 (CD11b/18).
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Affiliation(s)
- Geir Hetland
- Department of Environmental Medicine, National Institute of Public Health, P.O. Box 4404 Nydalen, 0403 Oslo, Norway.
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Brudnak MA. Application of genomeceuticals to the molecular and immunological aspects of autism. Med Hypotheses 2001; 57:186-91. [PMID: 11461171 DOI: 10.1054/mehy.2001.1331] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Autism is a developmental disease affecting as many as 1 in 300 children and is often characterized as a mental disorder originating in infancy that is associated with self-absorption, inability to interact socially, behavior, and language dysfunction (e.g. echolalia). Current theories indicate an important role of diet in the development of disease. It is thought that, as a result of maldigestion of casein and gluten, opioid-type peptides, or exorphins, are produced. Additionally, because of the time-frame of development of the disease, there has been an association with childhood vaccination. Consequently, prevailing therapies attempt to address these causes in one, or a combination, of three ways: diet restriction (removing casein and gluten); supplementation with exogenous enzymes; and probiotic bacteria. Until recently, none of the therapies addressed the molecular mechanisms that may be at work in the development and progression of autism. This paper presents potential molecular and cellular mechanism related to autism as well as discusses their application to the treatment of the disease through the application of genomeceuticals. Additionally, a link between developmentally associated aberrant immune and inflammatory responses, and autism is suggested and explored.
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Affiliation(s)
- M A Brudnak
- MAK Wood Inc., Thiensville, Wisconsin 53024, USA.
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Hetland G, Ohno N, Aaberge IS, Lovik M. Protective effect of beta-glucan against systemic Streptococcus pneumoniae infection in mice. FEMS IMMUNOLOGY AND MEDICAL MICROBIOLOGY 2000; 27:111-6. [PMID: 10640605 DOI: 10.1111/j.1574-695x.2000.tb01420.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The antimicrobial effect of soluble beta-1,3-D-glucan from Sclerotinia sclerotiorum (SSG) was examined in mice experimentally infected intraperitoneally (i.p.) with Streptococcus pneumoniae serotypes 4 and 6B. SSG was administered i.p. either 3 days before challenge or 3-48 h after challenge. The number of bacteria in blood samples and the mouse survival rates were recorded. Pre-challenge SSG administration protected dose-dependently against both S. pneumoniae type 4 and 6B infections. SSG injected 24 h post-challenge had a curative effect against type 6B but not type 4 pneumococcal infection. The data demonstrate that SSG administered systemically protects against pneumococcal infection in mice.
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Affiliation(s)
- G Hetland
- Department of Environmental Medicine, National Institute of Public Health, Oslo, Norway.
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