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CD40 in Endothelial Cells Restricts Neural Tissue Invasion by Toxoplasma gondii. Infect Immun 2019; 87:IAI.00868-18. [PMID: 31109947 DOI: 10.1128/iai.00868-18] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 05/10/2019] [Indexed: 02/08/2023] Open
Abstract
Little is known about whether pathogen invasion of neural tissue is affected by immune-based mechanisms in endothelial cells. We examined the effects of endothelial cell CD40 on Toxoplasma gondii invasion of the retina and brain, organs seeded hematogenously. T. gondii circulates in the bloodstream within infected leukocytes (including monocytes and dendritic cells) and as extracellular tachyzoites. After T. gondii infection, mice that expressed CD40 restricted to endothelial cells exhibited diminished parasite loads and histopathology in the retina and brain. These mice also had lower parasite loads in the retina and brain after intravenous (i.v.) injection of infected monocytes or dendritic cells. The protective effect of endothelial cell CD40 was not explained by changes in cellular or humoral immunity, reduced transmigration of leukocytes into neural tissue, or reduced invasion by extracellular parasites. Circulating T. gondii-infected leukocytes (dendritic cells used as a model) led to infection of neural endothelial cells. The number of foci of infection in these cells were reduced if endothelial cells expressed CD40. Infected dendritic cells and macrophages expressed membrane-associated inducible Hsp70. Infected leukocytes triggered Hsp70-dependent autophagy in CD40+ endothelial cells and anti-T. gondii activity dependent on ULK1 and beclin 1. Reduced parasite load in the retina and brain not only required CD40 expression in endothelial cells but was also dependent on beclin 1 and the expression of inducible Hsp70 in dendritic cells. These studies suggest that during endothelial cell-leukocyte interaction, CD40 restricts T. gondii invasion of neural tissue through a mechanism that appears mediated by endothelial cell anti-parasitic activity stimulated by Hsp70.
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Liso A, Castellani S, Massenzio F, Trotta R, Pucciarini A, Bigerna B, De Luca P, Zoppoli P, Castiglione F, Palumbo MC, Stracci F, Landriscina M, Specchia G, Bach LA, Conese M, Falini B. Human monocyte-derived dendritic cells exposed to hyperthermia show a distinct gene expression profile and selective upregulation of IGFBP6. Oncotarget 2017; 8:60826-60840. [PMID: 28977828 PMCID: PMC5617388 DOI: 10.18632/oncotarget.18338] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Accepted: 05/12/2017] [Indexed: 12/31/2022] Open
Abstract
Fever plays a role in activating innate immunity while its relevance in activating adaptive immunity is less clear. Even brief exposure to elevated temperatures significantly impacts on the immunostimulatory capacity of dendritic cells (DCs), but the consequences on immune response remain unclear. To address this issue, we analyzed the gene expression profiles of normal human monocyte-derived DCs from nine healthy adults subjected either to fever-like thermal conditions (39°C) or to normal temperature (37°C) for 180 minutes. Exposure of DCs to 39°C caused upregulation of 43 genes and downregulation of 24 genes. Functionally, the up/downregulated genes are involved in post-translational modification, protein folding, cell death and survival, and cellular movement. Notably, when compared to monocytes, DCs differentially upregulated transcription of the secreted protein IGFBP-6, not previously known to be specifically linked to hyperthermia. Exposure of DCs to 39°C induced apoptosis/necrosis and resulted in accumulation of IGFBP-6 in the conditioned medium at 48 h. IGFBP-6 may have a functional role in the hyperthermic response as it induced chemotaxis of monocytes and T lymphocytes, but not of B lymphocytes. Thus, temperature regulates complex biological DC functions that most likely contribute to their ability to induce an efficient adaptive immune response.
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Affiliation(s)
- Arcangelo Liso
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Stefano Castellani
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Francesca Massenzio
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Rosa Trotta
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | | | - Barbara Bigerna
- Institute of Haematology, University of Perugia, Perugia, Italy
| | | | - Pietro Zoppoli
- Dipartimento di Medicina Sperimentale e Clinica, Università degli Studi Magna Graecia, Catanzaro, Italy
| | - Filippo Castiglione
- Institute for Applied Computing, National Research Council of Italy, Rome, Italy
| | | | - Fabrizio Stracci
- Department of Experimental Medicine, Section of Public Health, University of Perugia, Perugia, Italy
| | - Matteo Landriscina
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy.,Laboratory of Preclinical and Translational Research, IRCCS, Referral Cancer Center of Basilicata, Rionero in Vulture, Italy
| | | | - Leon A Bach
- Department of Medicine, Alfred Hospital, Monash University, Melbourne, Australia.,Department of Endocrinology and Diabetes, Alfred Hospital, Melbourne, Australia
| | - Massimo Conese
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
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Martin C, Espaillat MP, Santiago-Schwarz F. IL-10 restricts dendritic cell (DC) growth at the monocyte-to-monocyte-derived DC interface by disrupting anti-apoptotic and cytoprotective autophagic molecular machinery. Immunol Res 2016; 63:131-43. [PMID: 26395023 DOI: 10.1007/s12026-015-8700-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
An evolving premise is that cytoprotective autophagy responses are essential to monocyte-macrophage differentiation. Whether autophagy functions similarly during the monocyte-to-dendritic cell (DC) transition is unclear. IL-10, which induces apoptosis in maturing human DCs, has been shown to inhibit starvation-induced autophagy in murine macrophage cell lines. Based on the strict requirement that Bcl-2-mediated anti-apoptotic processes are implemented during the monocyte-to-DC transition, we hypothesized that cytoprotective autophagy responses also operate at the monocyte-DC interface and that IL-10 inhibits both anti-apoptotic and cytoprotective autophagy responses at this critical juncture. In support of our premise, we show that levels of anti-apoptotic Bcl-2 and autophagy-associated LC3 and Beclin-1 proteins are coincidentally upregulated during the monocyte-to-DC transition. Autophagy was substantiated by increased autophagosome visualization after bafilomycin treatment. Moreover, the autophagy inhibitor 3-MA restricted DC differentiation by prompting apoptosis. IL-10 implemented apoptosis that was coincidentally associated with reduced levels of Bcl-2 and widespread disruption of the autophagic flux. During peak apoptosis, IL-10 produced the death of newly committed DCs. However, cells surviving the IL-10 apoptotic schedule were highly phagocytic macrophage-like cells displaying reduced capacity to stimulate allogeneic naïve T cells in a mixed leukocyte reaction, increased levels of LC3, and mature autophagosomes. Thus, IL-10's negative control of DC-driven adaptive immunity at the monocyte-DC interface includes disruption of coordinately regulated molecular networks involved in pro-survival autophagy and anti-apoptotic responses.
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Affiliation(s)
- Carla Martin
- Biology Department, Farmingdale State College, State University of New York, Farmingdale, NY, 11735, USA
| | - Mel Pilar Espaillat
- Molecular Genetics and Microbiology and Department of Medicine, State University of New York at Stony Brook, Stony Brook, NY, 11794, USA
| | - Frances Santiago-Schwarz
- Center for Autoimmune and Musculoskeletal Diseases, The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA.
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Zhang L, Zhu W, Li J, Yang X, Ren Y, Niu J, Pang Y. Clinical outcome of immunotherapy with dendritic cell vaccine and cytokine-induced killer cell therapy in hepatobiliary and pancreatic cancer. Mol Clin Oncol 2015; 4:129-133. [PMID: 26870371 DOI: 10.3892/mco.2015.660] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Accepted: 10/19/2015] [Indexed: 12/17/2022] Open
Abstract
The aim of this study was to determine the therapeutic effects of adoptive immunotherapy following dendritic cell (DC) vaccine and cytokine-induced killer (CIK) cell therapy and evaluate its cytotoxicity, survival benefits and quality of life (QOL) changes in patients with hepatobiliary and pancreatic cancer (HPC). We performed a retrospective analysis of 407 clinical cases, including 77 patients with HPC who received immunotherapy with DC vaccine and CIK cells (I group) and 330 patients with similar characteristics who underwent baseline treatment but did not receive immunotherapy [non-immunotherapy (NI) group)] as the control group. After a follow-up period of 294±207.5 days, the median survival time (MST) of the two groups was compared using the Kaplan-Meier method. In the I group, 61% of the patients developed a positive, delayed-type hypersensitivity response and 65% of the patients exhibited an improvement in QOL. The most notable adverse events included fever (28%), insomnia (25%), anorexia (17%), skin rash (12%) and arthralgia (31%). No severe toxicities were observed in patients in the I group; in addition, the MST was significantly longer in the I group compared with that in the NI group (P=0.014). Thus, the DC vaccine and CIK cell therapy was associated with mild adverse effects, but was able to induce an immune response and effectively eliminate tumor cells, thereby improving the QOL and prolonging the MST of the patients.
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Affiliation(s)
- Lihong Zhang
- School of Medicine, NanKai University, Tianjin 300071, P.R. China
| | - Wei Zhu
- Graduate School of Tianjin Medical University, Tianjin 300070, P.R. China
| | - Jiali Li
- Department of Oncology, Tianjin Union Medicine Centre, Tianjin 300121, P.R. China
| | - Xuejing Yang
- Department of Oncology, Tianjin Union Medicine Centre, Tianjin 300121, P.R. China
| | - Yanjie Ren
- Department of Oncology, Tianjin Union Medicine Centre, Tianjin 300121, P.R. China
| | - Jingxiu Niu
- Department of Oncology, Tianjin Union Medicine Centre, Tianjin 300121, P.R. China
| | - Yan Pang
- Department of Oncology, Tianjin Union Medicine Centre, Tianjin 300121, P.R. China
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Huang T, Perez-Cordon G, Shi L, Li G, Sun X, Wang X, Wang J, Feng H. Clostridium difficile toxin B intoxicated mouse colonic epithelial CT26 cells stimulate the activation of dendritic cells. Pathog Dis 2015; 73:ftv008. [PMID: 25743476 DOI: 10.1093/femspd/ftv008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Clostridium difficile causes antibiotic-associated diarrhea and pseudomembranous colitis mainly through two exotoxins TcdA and TcdB that target intestinal epithelial cells. Dendritic cells (DCs) play an important role in regulating intestinal inflammatory responses. In the current study, we explored the interaction of TcdB-intoxicated epithelial cells with mouse bone marrow-derived DCs. TcdB induced cell death and heat shock protein translocation in mouse intestinal epithelial CT26 cells. The intoxicated epithelial cells promoted the phagocytosis and the TNF-α secretion by DCs. Incubation with TcdB-intoxicated CT26 cells stimulated DC maturation. Moreover, TcdB-treated CT26 cells induced DC immigration when they were injected into mice subcutaneously. Taken together, these data demonstrate that TcdB-intoxicated intestinal epithelial cells are able to stimulate DC activation in vitro and attract DCs in vivo, indicating that epithelial cells may be able to regulate DC activation under the exposure of TcdB during C. difficile infection.
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Affiliation(s)
- Tuxiong Huang
- School of Bioscience and Bioengineering, South China University of Technology (SCUT), Guangzhou 51006, China Department of Microbial Pathogenesis, University of Maryland Dental School, Baltimore, MD 21021, USA
| | - Gregorio Perez-Cordon
- Department of Microbial Pathogenesis, University of Maryland Dental School, Baltimore, MD 21021, USA
| | - Lianfa Shi
- Department of Microbial Pathogenesis, University of Maryland Dental School, Baltimore, MD 21021, USA
| | - Guangchao Li
- School of Bioscience and Bioengineering, South China University of Technology (SCUT), Guangzhou 51006, China
| | - Xingmin Sun
- Department of Infectious Disease and Global Health, Tufts Cummings School of Veterinary Medicine, North Grafton, MA 01536, USA
| | - Xiaoning Wang
- Institute of Life Science, General Hospital of the People's Liberation Army, Beijing 100853, China
| | - Jufang Wang
- School of Bioscience and Bioengineering, South China University of Technology (SCUT), Guangzhou 51006, China
| | - Hanping Feng
- Department of Microbial Pathogenesis, University of Maryland Dental School, Baltimore, MD 21021, USA
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Caroprese M, Ciliberti MG, Annicchiarico G, Albenzio M, Muscio A, Sevi A. Hypothalamic-pituitary-adrenal axis activation and immune regulation in heat-stressed sheep after supplementation with polyunsaturated fatty acids. J Dairy Sci 2014; 97:4247-58. [PMID: 24792803 DOI: 10.3168/jds.2013-7696] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Accepted: 03/16/2014] [Indexed: 01/10/2024]
Abstract
The aim of this study was to assess the effects of supplementation with polyunsaturated fatty acids from different sources on immune regulation and hypothalamic-pituitary-adrenal (HPA) axis activation in heat-stressed sheep. The experiment was carried out during the summer 2012. Thirty-two Comisana ewes were divided into 4 groups (8 sheep/group): (1) supplemented with whole flaxseed (FS); (2) supplemented with Ascophyllum nodosum (AG); (3) supplemented with a combination of flaxseed and A. nodosum (FS+AG); and (4) control (C; no supplementation). On d 22 of the experiment, cortisol concentrations in sheep blood were measured after an injection of ACTH. Cellular immune response was evaluated by intradermic injection of phytohemagglutinin (PHA) at 0, 15, and 30 d of the trial. Humoral response to ovalbumin (OVA) was measured at 0, 15, and 30 d. At 0, 15, and 30 d of the experiment, blood samples were collected from each ewe to determine production of T-helper (Th)1 cytokines (IL-12 and IFN-γ), and Th2 cytokines (IL-10, IL-4, IL-13), and concentrations of heat shock proteins (HSP) 70 and 90. Ewes supplemented with flaxseed alone had greater cortisol concentrations and a longer-lasting cell-mediated immune response compared with ewes in the control and other groups. Anti-OVA IgG concentrations increased in all groups throughout the trial, even though ewes in the FS+AG group had the lowest anti-OVA IgG concentrations at 15 d. The level of IL-10 increased in all groups throughout the experiment; the FS+AG group had the lowest IL-13 concentration at 15 and 30 d. The concentration of HSP 70 increased in AG ewes at the end of the experiment and decreased in FS ewes, whereas that of HSP 90 increased in FS ewes compared with FS+AG ewes. Flaxseed supplementation was found to influence in vivo HPA activation in heat-stressed sheep, resulting in increased cortisol concentrations, probably to meet increased energy demand for thermoregulation. Flaxseed supplementation also supported Th1 response via a complex cross-talk between IL-10, IL-12, and IFN-γ production.
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Affiliation(s)
- M Caroprese
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy.
| | - M G Ciliberti
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
| | - G Annicchiarico
- Council for Research and Experimentation in Agriculture, 71020 Foggia, Italy
| | - M Albenzio
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
| | - A Muscio
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
| | - A Sevi
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
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7
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Jego G, Lanneau D, De Thonel A, Berthenet K, Hazoumé A, Droin N, Hamman A, Girodon F, Bellaye PS, Wettstein G, Jacquel A, Duplomb L, Le Mouël A, Papanayotou C, Christians E, Bonniaud P, Lallemand-Mezger V, Solary E, Garrido C. Dual regulation of SPI1/PU.1 transcription factor by heat shock factor 1 (HSF1) during macrophage differentiation of monocytes. Leukemia 2014; 28:1676-86. [PMID: 24504023 DOI: 10.1038/leu.2014.63] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 01/24/2014] [Accepted: 01/27/2014] [Indexed: 12/31/2022]
Abstract
In addition to their cytoprotective role in stressful conditions, heat shock proteins (HSPs) are involved in specific differentiation pathways, for example, we have identified a role for HSP90 in macrophage differentiation of human peripheral blood monocytes that are exposed to macrophage colony-stimulating factor (M-CSF). Here, we show that deletion of the main transcription factor involved in heat shock gene regulation, heat shock factor 1 (HSF1), affects M-CSF-driven differentiation of mouse bone marrow cells. HSF1 transiently accumulates in the nucleus of human monocytes undergoing macrophage differentiation, including M-CSF-treated peripheral blood monocytes and phorbol ester-treated THP1 cells. We demonstrate that HSF1 has a dual effect on SPI1/PU.1, a transcription factor essential for macrophage differentiation and whose deregulation can lead to the development of leukemias and lymphomas. Firstly, HSF1 regulates SPI1/PU.1 gene expression through its binding to a heat shock element within the intron 2 of this gene. Furthermore, downregulation or inhibition of HSF1 impaired both SPI1/PU.1-targeted gene transcription and macrophage differentiation. Secondly, HSF1 induces the expression of HSP70 that interacts with SPI1/PU.1 to protect the transcription factor from proteasomal degradation. Taken together, HSF1 appears as a fine-tuning regulator of SPI1/PU.1 expression at the transcriptional and post-translational levels during macrophage differentiation of monocytes.
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Affiliation(s)
- G Jego
- 1] INSERM, UMR 866, 'Equipe Labellisée Ligue contre le Cancer', Dijon, France [2] Faculty of Medicine and Pharmacy, University of Burgundy, Dijon, France
| | - D Lanneau
- 1] INSERM, UMR 866, 'Equipe Labellisée Ligue contre le Cancer', Dijon, France [2] Faculty of Medicine and Pharmacy, University of Burgundy, Dijon, France
| | - A De Thonel
- 1] INSERM, UMR 866, 'Equipe Labellisée Ligue contre le Cancer', Dijon, France [2] Faculty of Medicine and Pharmacy, University of Burgundy, Dijon, France
| | - K Berthenet
- 1] INSERM, UMR 866, 'Equipe Labellisée Ligue contre le Cancer', Dijon, France [2] Faculty of Medicine and Pharmacy, University of Burgundy, Dijon, France
| | - A Hazoumé
- 1] INSERM, UMR 866, 'Equipe Labellisée Ligue contre le Cancer', Dijon, France [2] Faculty of Medicine and Pharmacy, University of Burgundy, Dijon, France
| | - N Droin
- 1] INSERM, UMR 1009, Institut Gustave Roussy, 114 rue Edouard Vaillaint, Villejuif, France [2] University Paris-Sud 11, Institut Gustave Roussy, 114 rue Edouard Vaillaint, Villejuif, France
| | - A Hamman
- 1] INSERM, UMR 866, 'Equipe Labellisée Ligue contre le Cancer', Dijon, France [2] Faculty of Medicine and Pharmacy, University of Burgundy, Dijon, France
| | - F Girodon
- 1] INSERM, UMR 866, 'Equipe Labellisée Ligue contre le Cancer', Dijon, France [2] Faculty of Medicine and Pharmacy, University of Burgundy, Dijon, France
| | - P-S Bellaye
- 1] INSERM, UMR 866, 'Equipe Labellisée Ligue contre le Cancer', Dijon, France [2] Faculty of Medicine and Pharmacy, University of Burgundy, Dijon, France
| | - G Wettstein
- 1] INSERM, UMR 866, 'Equipe Labellisée Ligue contre le Cancer', Dijon, France [2] Faculty of Medicine and Pharmacy, University of Burgundy, Dijon, France
| | - A Jacquel
- 1] INSERM, UMR 866, 'Equipe Labellisée Ligue contre le Cancer', Dijon, France [2] Faculty of Medicine and Pharmacy, University of Burgundy, Dijon, France [3] INSERM, U526, Nice, France
| | - L Duplomb
- 1] Faculty of Medicine and Pharmacy, Génétique et anomalies du développement, University of Burgundy, Dijon, France [2] CHU, Dijon, France
| | - A Le Mouël
- 1] CNRS, UMR7216 Épigénétique et Destin Cellulaire, 35 rue Hélène Brion, Paris, France [2] University Paris Diderot, Sorbonne Paris Cité, 35 rue Hélène Brion, Paris, France
| | - C Papanayotou
- University Paris Diderot, Sorbonne Paris Cité, Institut jacques Monod, UMR 7592, Paris cedex 13, France
| | - E Christians
- CNRS, UMR 5547, Université Paul Sabatier, 118 route de Narbonne, Toulouse, France
| | - P Bonniaud
- 1] INSERM, UMR 866, 'Equipe Labellisée Ligue contre le Cancer', Dijon, France [2] Faculty of Medicine and Pharmacy, University of Burgundy, Dijon, France
| | - V Lallemand-Mezger
- 1] CNRS, UMR7216 Épigénétique et Destin Cellulaire, 35 rue Hélène Brion, Paris, France [2] University Paris Diderot, Sorbonne Paris Cité, 35 rue Hélène Brion, Paris, France
| | - E Solary
- 1] INSERM, UMR 1009, Institut Gustave Roussy, 114 rue Edouard Vaillaint, Villejuif, France [2] University Paris-Sud 11, Institut Gustave Roussy, 114 rue Edouard Vaillaint, Villejuif, France
| | - C Garrido
- 1] INSERM, UMR 866, 'Equipe Labellisée Ligue contre le Cancer', Dijon, France [2] Faculty of Medicine and Pharmacy, University of Burgundy, Dijon, France [3] Centre de lutte contre le cancer George-François Leclerc, Dijon, France
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Murakami A. Modulation of protein quality control systems by food phytochemicals. J Clin Biochem Nutr 2013; 52:215-27. [PMID: 23704811 PMCID: PMC3652296 DOI: 10.3164/jcbn.12-126] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Accepted: 01/15/2013] [Indexed: 12/15/2022] Open
Abstract
There is compelling evidence showing that dietary phytochemicals have exhibited pronounced bioactivities in a number of experimental models. In addition, a variety of epidemiological surveys have demonstrated that frequent ingestion of vegetables and fruits, which contain abundant phytochemicals, lowers the risk of onset of some diseases. However, the action mechanisms by which dietary phytochemicals show bioactivity remain to be fully elucidated and a fundamental question is why this class of chemicals has great potential for regulating health. Meanwhile, maintenance and repair of biological proteins by molecular chaperones, such as heat shock proteins, and clearance of abnormal proteins by the ubiquitin-proteasome system and autophagy play central roles in health, some disease prevention, and longevity. Interestingly, several recent studies have revealed that phytochemicals, including curcumin (yellow pigment in turmeric), resveratrol (phytoalexin in grapes), quercetin (general flavonol in onions and others), and isothiocyanates (preferentially present in cruciferous vegetables, such as broccoli and cabbage), are remarkable regulators of protein quality control systems, suggesting that their physiological and biological functions are exerted, at least in part, through activation of such unique mechanisms. This review article highlights recent findings regarding the effects of representative phytochemicals on protein quality control systems and their possible molecular mechanisms.
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Affiliation(s)
- Akira Murakami
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
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9
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Modulation of heat shock proteins during macrophage differentiation. Inflamm Res 2012; 61:1131-9. [DOI: 10.1007/s00011-012-0506-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Revised: 05/28/2012] [Accepted: 05/29/2012] [Indexed: 11/25/2022] Open
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10
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Moore SA, Kim MY, Maiolini A, Tipold A, Oglesbee MJ. Extracellular hsp70 release in canine Steroid Responsive Meningitis-Arteritis. Vet Immunol Immunopathol 2011; 145:129-33. [PMID: 22100193 DOI: 10.1016/j.vetimm.2011.10.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Revised: 10/24/2011] [Accepted: 10/27/2011] [Indexed: 01/15/2023]
Abstract
The role of extracellular 70 kDa heat shock protein 70 (ehsp70) in central nervous system inflammation is vastly understudied, despite evidence supporting the ability to drive a pro-inflammatory state. We investigated the presence of ehsp70 in cerebrospinal fluid (CSF) and serum of dogs with Steroid Responsive Meningitis-Arteritis (SRMA), with the hypothesis that an ehsp70 response would occur, and might play a role in the pathogenesis of this disease. Samples from 30 dogs acutely affected with SRMA, and 30 dogs treated with corticosteroids and currently in clinical remission from SRMA were compared with normal dogs. Serum and CSF concentrations of ehsp70 were quantified using an enzyme-linked immunosorbent assay. An ehsp70 response occurred in the CSF of dogs with SRMA and this response was attenuated by corticosteroid treatment. There was no correlation between serum and CSF concentrations of ehsp70, supporting local production and release of ehsp70 and not simply leakage from serum. Dogs with SRMA thus represent a powerful spontaneous model by which to study the role of ehsp70 in CNS inflammation.
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Affiliation(s)
- Sarah A Moore
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, 601 Vernon L. Tharp. St., Columbus, OH 43210, USA.
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11
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Calderwood SK. Heat shock proteins in breast cancer progression--a suitable case for treatment? Int J Hyperthermia 2010; 26:681-5. [PMID: 20653417 DOI: 10.3109/02656736.2010.490254] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Heat shock proteins (HSP) and heat shock factor 1 (HSF1), key factors in the heat shock response (HSR) have been implicated in the etiology of breast cancer. At least two members of the HSP family, Hsp27 and Hsp70 undergo significant increases in cellular concentration during the transformation of mammary cells. These changes result in HSP-mediated inhibition of tumour cell inactivation through blockade of the apoptosis and replicative senescence pathways. The increases in HSP thus mediate two of the common hallmarks of cancer and favour cell birth over cell death. In addition, Hsp90 plays a role in facilitating transformation by stabilising the mutated and over-expressed oncoproteins found in breast tumours, and permitting the activation of growth stimulatory and transforming pathways in the absence of growth factors. HSF1 appears to play a similar role as a facilitator of transformation in mammary carcinoma. Induction of some facets of the HSR in breast cancer cells therefore leads to growth stimulation and inhibits cell death. Pharmacological targeting of HSP and HSF1 is therefore indicated and in the case of Hsp90, inhibitory drugs are undergoing clinical trial for treatment of breast carcinoma and other cancers.
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Affiliation(s)
- Stuart K Calderwood
- Molecular and Cellular Radiation Oncology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA.
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12
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Mukai T, Maeda Y, Tamura T, Matsuoka M, Tsukamoto Y, Makino M. Enhanced Activation of T Lymphocytes by Urease-Deficient Recombinant Bacillus Calmette-Guérin Producing Heat Shock Protein 70-Major Membrane Protein-II Fusion Protein. THE JOURNAL OF IMMUNOLOGY 2010; 185:6234-43. [DOI: 10.4049/jimmunol.1000198] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Hong C, Qiu X, Li Y, Huang Q, Zhong Z, Zhang Y, Liu X, Sun L, Lv P, Gao XM. Functional analysis of recombinant calreticulin fragment 39-272: implications for immunobiological activities of calreticulin in health and disease. THE JOURNAL OF IMMUNOLOGY 2010; 185:4561-9. [PMID: 20855873 DOI: 10.4049/jimmunol.1000536] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Although calreticulin (CRT) is a major Ca(2+)-binding luminal resident protein, it can also appear on the surface of various types of cells and it functions as an immunopotentiating molecule. However, molecular mechanisms underlying the potent immunobiological activity of cell surface CRT are still unclear. In the present study, a recombinant fragment (rCRT/39-272) covering the lectin-like N domain and partial P domain of murine CRT has been expressed in Escherichia coli. The affinity-purified rCRT/39-272 assembles into homodimers and oligomers in solution and exhibits high binding affinity to various glycans, including carrageenan, alginic acids, and hyaluronic acids. Functionally, rCRT/39-272 is capable of driving the activation and maturation of B cells and cytokine production by macrophages in a TLR-4-dependent manner in vitro. It specifically binds recombinant mouse CD14, but not BAFFR and CD40. It is also able to trigger Ig class switching by B cells in the absence of T cell help both in vitro and in vivo. Furthermore, this fragment of CRT exhibits strong adjuvanticity when conjugated to polysaccharides or expressed as part of a fusion protein. Soluble CRT can be detected in the sera of patients with rheumatoid arthritis or systemic lupus erythematosus, but not in healthy subjects. We argue that CRT, either on the membrane surface of cells or in soluble form, is a potent stimulatory molecule to B cells and macrophages via the TLR-4/CD14 pathway and plays important roles in the pathogenesis of autoimmune diseases.
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Affiliation(s)
- Chao Hong
- Department of Immunology, Peking University Health Science Center, Beijing, China
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