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Kim YK, Munir KM, Davis SN. Type 1 diabetes: key drug targets and how they could influence future therapeutics. Expert Opin Ther Targets 2023; 27:31-40. [PMID: 36744390 DOI: 10.1080/14728222.2023.2177150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Despite significant strides made in the management of T1DM, standard management is still insulin analog therapy. Some non-insulin therapies traditionally reserved for the treatment of T2DM have been explored in caring for patients with T1DM, and pancreas transplant is an option for few. However, T1DM remains a challenging disease to manage, encouraging development of novel pharmacologic agents. AREAS COVERED We retrieved PubMed, Cochrane Library, Scopus, Google Scholar, and ClinicalTrials.gov records to identify studies and articles focused on new pharmacologic advances to treat T1DM. EXPERT OPINION Recent research has focused on new targets of pharmacologic treatment of T1DM. Beta-cell preservation through immunomodulation or inhibiting inflammation hopes to delay or halt the progression of the disease. Beta cell regeneration through islet cell transplant or modification in transcription pathways aim to reverse the disease effects. Multiple other new targets such as glucagon antagonism and glucokinase activation are also in development as a potential adjunctive therapy. These new therapeutic targets offer the hope of reducing the daily burden of diabetes management with eventual insulin discontinuation for many individuals with T1DM.
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Affiliation(s)
- Yoon Kook Kim
- Division of Endocrinology, Diabetes, and Nutrition, University of Maryland School of Medicine, Center for Diabetes and Endocrinology, 800 Linden Ave, 8th Floor, 21201, Baltimore, MD, USA
| | - Kashif M Munir
- Division of Endocrinology, Diabetes, and Nutrition, University of Maryland School of Medicine, Center for Diabetes and Endocrinology, 800 Linden Ave, 8th Floor, 21201, Baltimore, MD, USA
| | - Stephen N Davis
- Department of Medicine, University of Maryland School of Medicine, 22 South Greene Street, 21201, Baltimore, MD, USA
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2
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Guerra PV, Andrade CM, Nunes IV, Gama BC, Tibúrcio R, Santos WLC, Azevedo VA, Tavares NM, Rebouças JDS, Maiolii TU, Faria AMC, Brodskyn CI. Oral Tolerance Induced by Heat Shock Protein 65-Producing Lactococcus lactis Mitigates Inflammation in Leishmania braziliensis Infection. Front Immunol 2021; 12:647987. [PMID: 34248935 PMCID: PMC8264454 DOI: 10.3389/fimmu.2021.647987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 06/07/2021] [Indexed: 12/05/2022] Open
Abstract
Cutaneous leishmaniasis caused by L. braziliensis induces a pronounced Th1 inflammatory response characterized by IFN-γ production. Even in the absence of parasites, lesions result from a severe inflammatory response in which inflammatory cytokines play an important role. Different approaches have been used to evaluate the therapeutic potential of orally administrated heat shock proteins (Hsp). These proteins are evolutionarily preserved from bacteria to humans, highly expressed under inflammatory conditions and described as immunodominant antigens. Tolerance induced by the oral administration of Hsp65 is capable of suppressing inflammation and inducing differentiation in regulatory cells, and has been successfully demonstrated in several experimental models of autoimmune and inflammatory diseases. We initially administered recombinant Lactococcus lactis (L. lactis) prior to infection as a proof of concept, in order to verify its immunomodulatory potential in the inflammatory response arising from L. braziliensis. Using this experimental approach, we demonstrated that the oral administration of a recombinant L. lactis strain, which produces and secretes Hsp65 from Mycobacterium leprae directly into the gut, mitigated the effects of inflammation caused by L. braziliensis infection in association or not with PAM 3CSK4 (N-α-Palmitoyl-S-[2,3-bis(palmitoyloxy)-(2RS)-propyl]-L-cysteine, a TLR2 agonist). This was evidenced by the production of anti-inflammatory cytokines and the expansion of regulatory T cells in the draining lymph nodes of BALB/c mice. Our in vitro experimental results suggest that IL-10, TLR-2 and LAP are important immunomodulators in L. braziliensis infection. In addition, recombinant L. lactis administered 4 weeks after infection was observed to decrease lesion size, as well as the number of parasites, and produced a higher IL-10 production and decrease IFN-γ secretion. Together, these results indicate that Hsp65-producing L. lactis can be considered as an alternative candidate for treatment in both autoimmune diseases, as well as in chronic infections that cause inflammatory disease.
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Affiliation(s)
- Priscila Valera Guerra
- Laboratório da Interação Parasita-Hospedeiro e Epidemiologia (LAIPHE) Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil.,Curso de Medicina, Centro Universitário Christus, Fortaleza, Brazil
| | - Camila Mattos Andrade
- Laboratório da Interação Parasita-Hospedeiro e Epidemiologia (LAIPHE) Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
| | - Ivanéia Valeriano Nunes
- Laboratório da Interação Parasita-Hospedeiro e Epidemiologia (LAIPHE) Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
| | - Brena Cardoso Gama
- Laboratório da Interação Parasita-Hospedeiro e Epidemiologia (LAIPHE) Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
| | - Rafael Tibúrcio
- Laboratório da Interação Parasita-Hospedeiro e Epidemiologia (LAIPHE) Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
| | - Washington Luis Conrado Santos
- Laboratório de Patologia Estrutural e Molecular (LAPEM), Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil.,Departamento de Patologia e Medicina Legal Faculdade de Medicina da Universidade Federal da Bahia, Salvador, Brazil
| | - Vasco Ariston Azevedo
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biomédicas, Universidade Federal de Minais Gerais, Belo Horizonte, Brazil
| | - Natalia Machado Tavares
- Laboratório da Interação Parasita-Hospedeiro e Epidemiologia (LAIPHE) Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil.,Instituto de Investigação em Imunologia, Instituto Nacional de Ciência e Tecnologia (INCT), São Paulo, Brazil
| | - Juliana de Souza Rebouças
- Instituto de Ciências Biológicas, Programa de Pós Graduação em Ciências da Saúde, Universidade de Pernambuco, Recife, Brazil
| | - Tatiani Uceli Maiolii
- Departamento de Nutrição, Escola de Enfermagem, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ana Maria Caetano Faria
- Instituto de Investigação em Imunologia, Instituto Nacional de Ciência e Tecnologia (INCT), São Paulo, Brazil.,Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Cláudia Ida Brodskyn
- Laboratório da Interação Parasita-Hospedeiro e Epidemiologia (LAIPHE) Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil.,Instituto de Investigação em Imunologia, Instituto Nacional de Ciência e Tecnologia (INCT), São Paulo, Brazil
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3
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Montarello NJ, Nguyen MT, Wong DTL, Nicholls SJ, Psaltis PJ. Inflammation in Coronary Atherosclerosis and Its Therapeutic Implications. Cardiovasc Drugs Ther 2020; 36:347-362. [PMID: 33170943 DOI: 10.1007/s10557-020-07106-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/03/2020] [Indexed: 12/11/2022]
Abstract
Atherosclerotic coronary artery disease has a complex pathogenesis which extends beyond cholesterol intimal infiltration. It involves chronic inflammation of the coronary artery wall driven by systemic and local activation of both the adaptive and innate immune systems, which can ultimately result in the rupture or erosion of atherosclerotic plaque, leading to thrombosis and myocardial infarction (MI). Despite current best practice care, including the widespread use of cholesterol-lowering statins, atherothrombotic cardiovascular events recur at alarming rates post-MI. To a large extent, this reflects residual inflammation that is not adequately controlled by contemporary treatment. Consequently, there has been increasing interest in the pharmacological targeting of inflammation to improve outcomes in atherosclerotic cardiovascular disease. This has comprised both novel pathway-specific agents, most notably the anti-interleukin-1 beta monoclonal antibody, canakinumab, and the repurposing of established, broad-acting drugs, such as colchicine, that are already approved for the management of other inflammatory conditions. Here we discuss the importance of inflammation in mediating atherosclerosis and its complications and provide a timely update on "new" and "old" anti-inflammatory therapies currently being investigated to target it.
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Affiliation(s)
- Nicholas J Montarello
- Department of Cardiology, Central Adelaide Local Health Network, Adelaide, Australia
| | - Mau T Nguyen
- Department of Cardiology, Central Adelaide Local Health Network, Adelaide, Australia
- Vascular Research Centre, Heart and Vascular Program, Lifelong Health Theme, South Australian Health and Medical Research Institute, PO Box 11060, Adelaide, SA, 5001, Australia
| | - Dennis T L Wong
- Monash Cardiovascular Research Centre, Monash University, Clayton, Australia
| | - Stephen J Nicholls
- Monash Cardiovascular Research Centre, Monash University, Clayton, Australia
| | - Peter J Psaltis
- Department of Cardiology, Central Adelaide Local Health Network, Adelaide, Australia.
- Vascular Research Centre, Heart and Vascular Program, Lifelong Health Theme, South Australian Health and Medical Research Institute, PO Box 11060, Adelaide, SA, 5001, Australia.
- Adelaide Medical School, University of Adelaide, Adelaide, Australia.
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4
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da Cunha VP, Preisser TM, Santana MP, Machado DCC, Pereira VB, Miyoshi A. Invasive Lactococcus lactis producing mycobacterial Hsp65 ameliorates intestinal inflammation in acute TNBS-induced colitis in mice by increasing the levels of the cytokine IL-10 and secretory IgA. J Appl Microbiol 2020; 129:1389-1401. [PMID: 32473073 DOI: 10.1111/jam.14695] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/22/2020] [Accepted: 04/30/2020] [Indexed: 12/22/2022]
Abstract
AIMS To investigate the anti-inflammatory activity of an invasive and Hp65-producing strain Lactococcus lactis NCDO2118 FnBPA+ (pXYCYT:Hsp65) in acute 2,4,6-trinitrobenzene sulphonic acid (TNBS)-induced colitis in mice as an innovative therapeutic strategy against Crohn's disease (CD). METHODS AND RESULTS The pXYCYT:Hsp65 plasmid was transformed into the L. lactis NCDO2118 FnBPA+ strain, resulting in the L. lactis NCDO2118 FnBPA+ (pXYCYT:Hsp65) strain. Then, the functionality of the strain was evaluated in vitro for Hsp65 production by Western blotting and for invasion into Caco-2 cells. The results demonstrated that the strain was able to produce Hsp65 and efficiently invade eukaryotic cells. Subsequently, in vivo, the anti-inflammatory capacity of the recombinant strain was evaluated in colitis induced with TNBS in BALB/c mice. Oral administration of the recombinant strain was able to attenuated the severity of colitis by mainly reducing IL-12 and IL-17 levels and increasing IL-10 and secretory immunoglobulin A levels. CONCLUSIONS The L. lactis NCDO2118 FnBPA+ (pXYCYT:Hsp65) strain contributed to a reduction in inflammatory damage in experimental CD. SIGNIFICANCE AND IMPACT OF THE STUDY This study, which used L. lactis for the production and delivery of Hsp65, has scientific relevance because it shows the efficacy of this new strategy based on therapeutic protein delivery into mammalian enterocytes.
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Affiliation(s)
- V P da Cunha
- Laboratory of Genetic Technology, Department of Ecology, Genetics and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - T M Preisser
- Laboratory of Genetic Technology, Department of Ecology, Genetics and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - M P Santana
- Laboratory of Genetic Technology, Department of Ecology, Genetics and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - D C C Machado
- Center for Gastrointestinal Biology, Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - V B Pereira
- Laboratory of Genetic Technology, Department of Ecology, Genetics and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - A Miyoshi
- Laboratory of Genetic Technology, Department of Ecology, Genetics and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
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5
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Lundberg R, Toft MF, Metzdorff SB, Hansen CHF, Licht TR, Bahl MI, Hansen AK. Human microbiota-transplanted C57BL/6 mice and offspring display reduced establishment of key bacteria and reduced immune stimulation compared to mouse microbiota-transplantation. Sci Rep 2020; 10:7805. [PMID: 32385373 PMCID: PMC7211022 DOI: 10.1038/s41598-020-64703-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 04/20/2020] [Indexed: 02/07/2023] Open
Abstract
Transplantation of germ-free (GF) mice with microbiota from mice or humans stimulates the intestinal immune system in disparate ways. We transplanted a human microbiota into GF C57BL/6 mice and a murine C57BL/6 microbiota into GF C57BL/6 mice and Swiss-Webster (SW) mice. Mice were bred to produce an offspring generation. 56% of the Operational Taxonomic Units (OTUs) present in the human donor microbiota established in the recipient mice, whereas 81% of the C57BL/6 OTUs established in the recipient C57BL/6 and SW mice. Anti-inflammatory bacteria such as Faecalibacterium and Bifidobacterium from humans were not transferred to mice. Expression of immune-related intestinal genes was lower in human microbiota-mice and not different between parent and offspring generation. Expression of intestinal barrier-related genes was slightly higher in human microbiota-mice. Cytokines and chemokines measured in plasma were differentially present in human and mouse microbiota-mice. Minor differences in microbiota and gene expression were found between transplanted mice of different genetics. It is concluded that important immune-regulating bacteria are lost when transplanting microbiota from humans to C57BL/6 mice, and that the established human microbiota is a weak stimulator of the murine immune system. The results are important for study design considerations in microbiota transplantation studies involving immunological parameters.
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Affiliation(s)
- Randi Lundberg
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 1871, Frederiksberg C, Denmark.
- Internal Research and Development, Taconic Biosciences, 4623, Lille Skensved, Denmark.
- Chr. Hansen, 2970, Hoersholm, Denmark.
| | - Martin F Toft
- Internal Research and Development, Taconic Biosciences, 4623, Lille Skensved, Denmark
- QM Diagnostics, 6534, AT Nijmegen, The Netherlands
| | - Stine B Metzdorff
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 1871, Frederiksberg C, Denmark
| | - Camilla H F Hansen
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 1871, Frederiksberg C, Denmark
| | - Tine R Licht
- National Food Institute, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Martin I Bahl
- National Food Institute, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Axel K Hansen
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 1871, Frederiksberg C, Denmark
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6
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Wrońska AK, Boguś MI. Heat shock proteins (HSP 90, 70, 60, and 27) in Galleria mellonella (Lepidoptera) hemolymph are affected by infection with Conidiobolus coronatus (Entomophthorales). PLoS One 2020; 15:e0228556. [PMID: 32027696 PMCID: PMC7004346 DOI: 10.1371/journal.pone.0228556] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 01/18/2020] [Indexed: 12/27/2022] Open
Abstract
Invertebrates are becoming more popular models for research on the immune system. The innate immunity possessed by insects shows both structural and functional similarity to the resistance displayed by mammals, and many processes occurring in insect hemocytes are similar to those that occur in mammals. The humoral immune response in insects acts by melanization, clotting and the production of reactive oxygen species and antimicrobial peptides, while the cellular immunity system is based on nodulation, encapsulation and phagocytosis. An increasingly popular insect model in biological research is Galleria mellonella, whose larvae are sensitive to infection by the entomopathogenic fungus Conidiobolus coronatus, which can also be dangerous to humans. One group of factors that modulate the response of the immune system during infection in mammals are heat shock proteins (HSPs). The aim of this study was to investigate whether infection by C. coronatus in G. mellonella hemolymph is accompanied by an increase of HSP90, HSP70, HSP60 and HSP27. Larvae (five-day-old last instar) were exposed for 24 hours to fully-grown and sporulating fungus. Hemolymph was collected either immediately after termination of exposure (F24) or 24 hours later (F48). The concentration of the HSPs in hemolymph was determined using ELISA. Immunolocalization in hemocytes was performed using fluorescence microscopy and flow cytometry. HSP90, HSP70, HSP60 and HSP27 were found to be present in the G. mellonella hemocytes. HSP60 and HSP90 predominated in healthy insects, with HSP70 and HSP27 being found in trace amounts; HSP60 and HSP27 were elevated in F24 and F48, and HSP90 was elevated in F48. The fungal infection had no effect on HSP70 levels. These findings shed light on the mechanisms underlying the interaction between the innate insect immune response and entomopathogen infection. The results of this innovative study may have a considerable impact on research concerning innate immunology and insect physiology.
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Affiliation(s)
- Anna Katarzyna Wrońska
- Polish Academy of Sciences, Witold Stefański Institute of Parasitology, Warsaw, Poland
- * E-mail:
| | - Mieczysława Irena Boguś
- Polish Academy of Sciences, Witold Stefański Institute of Parasitology, Warsaw, Poland
- BIOMIBO, Warsaw, Poland
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7
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Toll-like Receptors from the Perspective of Cancer Treatment. Cancers (Basel) 2020; 12:cancers12020297. [PMID: 32012718 PMCID: PMC7072551 DOI: 10.3390/cancers12020297] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 01/22/2020] [Accepted: 01/25/2020] [Indexed: 02/06/2023] Open
Abstract
Toll-like receptors (TLRs) represent a family of pattern recognition receptors that recognize certain pathogen-associated molecular patterns and damage-associated molecular patterns. TLRs are highly interesting to researchers including immunologists because of the involvement in various diseases including cancers, allergies, autoimmunity, infections, and inflammation. After ligand engagement, TLRs trigger multiple signaling pathways involving nuclear factor-κB (NF-κB), interferon-regulatory factors (IRFs), and mitogen-activated protein kinases (MAPKs) for the production of various cytokines that play an important role in diseases like cancer. TLR activation in immune as well as cancer cells may prevent the formation and growth of a tumor. Nonetheless, under certain conditions, either hyperactivation or hypoactivation of TLRs supports the survival and metastasis of a tumor. Therefore, the design of TLR-targeting agonists as well as antagonists is a promising immunotherapeutic approach to cancer. In this review, we mainly describe TLRs, their involvement in cancer, and their promising properties for anticancer drug discovery.
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8
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Hermann JK, Capadona JR. Understanding the Role of Innate Immunity in the Response to Intracortical Microelectrodes. Crit Rev Biomed Eng 2019; 46:341-367. [PMID: 30806249 DOI: 10.1615/critrevbiomedeng.2018027166] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Intracortical microelectrodes exhibit enormous potential for researching the nervous system, steering assistive devices and functional electrode stimulation systems for severely paralyzed individuals, and augmenting the brain with computing power. Unfortunately, intracortical microelectrodes often fail to consistently record signals over clinically useful periods. Biological mechanisms, such as the foreign body response to intracortical microelectrodes and self-perpetuating neuroinflammatory cascades, contribute to the inconsistencies and decline in recording performance. Unfortunately, few studies have directly correlated microelectrode performance with the neuroinflammatory response to the implanted devices. However, of those select studies that have, the role of the innate immune system remains among the most likely links capable of corroborating the results of different studies, across laboratories. Therefore, the overall goal of this review is to highlight the role of innate immunity signaling in the foreign body response to intracortical microelectrodes and hypothesize as to appropriate strategies that may become the most relevant in enabling brain-dwelling electrodes of any geometry, or location, for a range of clinical applications.
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Affiliation(s)
- John K Hermann
- Department of Biomedical Engineering, Case Western Reserve University, 2071 Martin Luther King Jr. Drive, Wickenden Bldg, Cleveland, OH 44106; Advanced Platform Technology Center, Rehabilitation Research and Development, Louis Stokes Cleveland VA Medical Center, 10701 East Blvd. Mail Stop 151 AW/APT, Cleveland, OH 44106-1702
| | - Jeffrey R Capadona
- Department of Biomedical Engineering, Case Western Reserve University, 2071 Martin Luther King Jr. Drive, Wickenden Bldg, Cleveland, OH 44106; Advanced Platform Technology Center, Rehabilitation Research and Development, Louis Stokes Cleveland VA Medical Center, 10701 East Blvd. Mail Stop 151 AW/APT, Cleveland, OH 44106-1702
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Liu B, Li S, Xiu B, Zhang Y, Zhou Y, Yang Q, Qi W, Wu W, Wang L, Gu J, Xie J. C-terminus of heat shock protein 60 can activate macrophages by lectin-like oxidized low-density lipoprotein receptor 1. Biochem Biophys Res Commun 2018; 508:1113-1119. [PMID: 30553444 DOI: 10.1016/j.bbrc.2018.12.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 12/02/2018] [Indexed: 01/28/2023]
Abstract
Immune responses against antigens generally require an efficient activation of antigen-presenting cells (APCs). Currently, the targeting of vaccine antigens to APCs has emerged as a promising strategy for boosting vaccine immunogenicity. Here, we reported that the C-terminus of heat shock protein 60 (HSP60C) can activate mouse peritoneal macrophages to secret a series of cytokines, and phosphorylation of p38 mitogen-activated protein kinase (MAPK) and NF-κB p65 was involved in the pathway. We showed that the activation effect of HSP60C on macrophages was independent of toll-like receptor (TLR) 4 and the TLR-associated myeloide differentiation factor 88 (MyD88). Knockdown of lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1) reduced the activation of HSP60C-induced macrophage p38 MAPK, NF-κB p65 and cytokine secretion to some extent. Finally, we found that HSP60C up-regulated the expression of LOX-1 on macrophages and ovalbumin (OVA) model antigen fused with HSP60C markedly enhanced OVA-specific IgG responses. Thus, our results unravel a novel LOX-1-dependent pathway by which HSP60C can effectively activate macrophages and APCs targeting based on LOX-1 interaction is a promising approach to improve vaccines.
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Affiliation(s)
- Baonian Liu
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Shaoling Li
- Department of Pathology, Fudan University Shanghai Cancer Centre, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Bingqiu Xiu
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Yaqi Zhang
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Yuxiang Zhou
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Qinrui Yang
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Wanjun Qi
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Weicheng Wu
- Key Laboratory of Glycoconjugate Research, Ministry of Health, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Lan Wang
- Key Laboratory of Glycoconjugate Research, Ministry of Health, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Jianxin Gu
- Key Laboratory of Glycoconjugate Research, Ministry of Health, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Jianhui Xie
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China.
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10
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Romero-López JP, Domínguez-López ML, Burgos-Vargas R, García-Latorre E. Stress proteins in the pathogenesis of spondyloarthritis. Rheumatol Int 2018; 39:595-604. [PMID: 29855675 DOI: 10.1007/s00296-018-4070-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 05/26/2018] [Indexed: 12/15/2022]
Abstract
Spondyloarthritis is an autoinflammatory rheumatic disease in which arthritis and osteoproliferation lead the patients who suffer from it to chronic disability. This disease is associated with the expression of class I MHC molecule HLA-B27, which tends to be misfolded in the endoplasmic reticulum and, therefore, expressed in aberrant forms. This phenomena lead to endoplasmic reticulum stress, which in time, evokes a whole response to cellular injury. Under these conditions, the molecules involved in restoring cell homeostasis play a key role. Such is the case of the "heat-shock proteins", which usually regulate protein folding, but also have important immunomodulatory functions, as well as some roles in tissue modeling. In this review, we attempt to summarize the involvement of cell stress and heat-shock proteins in the homeostatic disturbances and pathological conditions associated with this disease.
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Affiliation(s)
- José Pablo Romero-López
- Laboratorio de Inmunoquímica I, Departmento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación Manuel Carpio y Plan de Ayala SN, CP 11340, Ciudad de México, México
| | - María Lilia Domínguez-López
- Laboratorio de Inmunoquímica I, Departmento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación Manuel Carpio y Plan de Ayala SN, CP 11340, Ciudad de México, México
| | - Rubén Burgos-Vargas
- Departamento de Reumatología, Hospital General de México "Dr. Eduardo Liceaga", Ciudad de México, México
| | - Ethel García-Latorre
- Laboratorio de Inmunoquímica I, Departmento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación Manuel Carpio y Plan de Ayala SN, CP 11340, Ciudad de México, México.
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11
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Bajzert J, Gorczykowski M, Galli J, Stefaniak T. The evaluation of immunogenic impact of selected bacterial, recombinant Hsp60 antigens in DBA/2J mice. Microb Pathog 2017; 115:100-111. [PMID: 29246635 DOI: 10.1016/j.micpath.2017.12.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 10/31/2017] [Accepted: 12/01/2017] [Indexed: 01/21/2023]
Abstract
Heat Shock Proteins (HSP) are highly conserved proteins that are widely spread throughout all organisms. They function in the cytoplasm as chaperones; however, they could be expressed on the cell surface. It has been shown that Hsp60 obtained from gram-negative bacteria are able to stimulate cells of the acquired and innate immune system. The aim of this study was the evaluation of the immunogenic properties of recombinant Hsp60 proteins derived from four common pathogenic bacteria: Escherichia coli, Histophilus somni, Pasteurella multocida and Salmonella Enteritidis. The analysis of the humoral immune response in DBA/2J mice hyperimmunized with selected rHsp60 revealed high levels of IgG rHsp60-antibody with the predominance of the IgG1 subclass, in the reaction with both homologous and heterologous antigens. The presence of IgG2a and IgG2b was also observed; however, no antibodies of subclass IgG3 were detected. The comparison of plasma IgG antibody reactivity of mice immunized with two different doses of rHsp60 (10/20 μg) showed that the lower dose was sufficient to induce a strong humoral response. The reactivity of the IgG rHsp60-antibody with whole bacterial cells showed a significantly higher reaction with H. somni compared with other pathogens. It was demonstrated that the addition of all rHsp60 with polymyxin B to the culture medium stimulated splenocytes isolated from hyperimmunized mice to release IL-1β and IL-6. As a strong stimulator of the immune system, bacterial-origin Hsp60 seems to be an interesting potential component of subunit vaccines aimed at the development of protection for animals during infections caused by gram-negative bacteria.
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Affiliation(s)
- Joanna Bajzert
- Department of Immunology, Pathophysiology and Veterinary Preventive Medicine, Wroclaw University of Environmental and Life Sciences, Poland.
| | - Michał Gorczykowski
- Department of Internal Medicine and Clinic of Diseases of Horses, Dogs and Cats, Wroclaw University of Environmental and Life Sciences, Poland
| | - Józef Galli
- Department of Immunology, Pathophysiology and Veterinary Preventive Medicine, Wroclaw University of Environmental and Life Sciences, Poland
| | - Tadeusz Stefaniak
- Department of Immunology, Pathophysiology and Veterinary Preventive Medicine, Wroclaw University of Environmental and Life Sciences, Poland
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12
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Kaczmarek M, Lagiedo M, Masztalerz A, Kozlowska M, Nowicka A, Brajer B, Batura-Gabryel H, Sikora J. Concentrations of SP-A and HSP70 are associated with polarization of macrophages in pleural effusions of non-small cell lung cancer. Immunobiology 2017; 223:200-209. [PMID: 29111316 DOI: 10.1016/j.imbio.2017.10.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 10/08/2017] [Indexed: 12/27/2022]
Abstract
Damage-associated molecular pattern (DAMP) molecules can initiate an immune response through Toll-like receptors (TLRs). DAMPs are released from cells as a response to the extracellular danger and can be by-products of tissue damage. In cancer microenvironment necrotic cells release debris which has potency to become DAMPs. Non-small cell lung cancer (NSCLC) is often accompanied by pleural effusion (PE), which contains a variety of DAMPs. Surfactant protein A (SP-A) and heat shock protein 70 (Hsp70) are important DAMPs in the respiratory tract. The aim of this study was to determine a correlation between SP-A or Hsp70 and development of PE in the course of NSCLC. Moreover, we aimed to determine relationships between DAMPs and certain humoral factors associated with formation and persistence of PE as well as pleural-residing macrophages. In 34 PE samples, we estimated concentration of SP-A, Hsp70, IL-6, IL-18, G-CSF, M-CSF, SCF, SDF1α, VEGF as well as the fraction of macrophages and their pattern of polarization. We have found correlations between the concentration of the SP-A and Hsp70 and the percentage of PE-derived macrophages, also between concentrations of SP-A and Hsp70, and cytokines which participate in inflammation and processes involved in remodeling of extracellular matrix (ECM). Our data indicate an important role of SP-A during the development of PE associated with NSCLC. We suggest that measurement of concentration level of SP-A can be helpful in the course of diagnosis of malignant PE associated with NSCLC.
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Affiliation(s)
- Mariusz Kaczmarek
- Department of Immunology, Chair of Clinical Immunology, University of Medical Sciences, Poznan, Poland.
| | - Malgorzata Lagiedo
- Department of Immunology, Chair of Clinical Immunology, University of Medical Sciences, Poznan, Poland
| | - Agnieszka Masztalerz
- Department of Immunology, Chair of Clinical Immunology, University of Medical Sciences, Poznan, Poland
| | | | - Agata Nowicka
- Department of Pulmonology, Allergology and Pulmonary Oncology, University of Medical Sciences, Poznan, Poland
| | - Beata Brajer
- Department of Pulmonology, Allergology and Pulmonary Oncology, University of Medical Sciences, Poznan, Poland
| | - Halina Batura-Gabryel
- Department of Pulmonology, Allergology and Pulmonary Oncology, University of Medical Sciences, Poznan, Poland
| | - Jan Sikora
- Department of Immunology, Chair of Clinical Immunology, University of Medical Sciences, Poznan, Poland
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13
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Barbera Betancourt A, Lyu Q, Broere F, Sijts A, Rutten VPMG, van Eden W. T Cell-Mediated Chronic Inflammatory Diseases Are Candidates for Therapeutic Tolerance Induction with Heat Shock Proteins. Front Immunol 2017; 8:1408. [PMID: 29123529 PMCID: PMC5662553 DOI: 10.3389/fimmu.2017.01408] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 10/11/2017] [Indexed: 12/21/2022] Open
Abstract
Failing immunological tolerance for critical self-antigens is the problem underlying most chronic inflammatory diseases of humans. Despite the success of novel immunosuppressive biological drugs, the so-called biologics, in the treatment of diseases such rheumatoid arthritis (RA) and type 1 diabetes, none of these approaches does lead to a permanent state of medicine free disease remission. Therefore, there is a need for therapies that restore physiological mechanisms of self-tolerance. Heat shock proteins (HSPs) have shown disease suppressive activities in many models of experimental autoimmune diseases through the induction of regulatory T cells (Tregs). Also in first clinical trials with HSP-based peptides in RA and diabetes, the induction of Tregs was noted. Due to their exceptionally high degree of evolutionary conservation, HSP protein sequences (peptides) are shared between the microbiota-associated bacterial species and the self-HSP in the tissues. Therefore, Treg mechanisms, such as those induced and maintained by gut mucosal tolerance for the microbiota, can play a role by targeting the more conserved HSP peptide sequences in the inflamed tissues. In addition, the stress upregulated presence of HSP in these tissues may well assist the targeting of the HSP induced Treg specifically to the sites of inflammation.
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Affiliation(s)
- Ariana Barbera Betancourt
- Faculty of Veterinary Medicine, Department of Infectious Diseases and Immunology, Utrecht University, Utrecht, Netherlands
| | - Qingkang Lyu
- Faculty of Veterinary Medicine, Department of Infectious Diseases and Immunology, Utrecht University, Utrecht, Netherlands
| | - Femke Broere
- Faculty of Veterinary Medicine, Department of Infectious Diseases and Immunology, Utrecht University, Utrecht, Netherlands
| | - Alice Sijts
- Faculty of Veterinary Medicine, Department of Infectious Diseases and Immunology, Utrecht University, Utrecht, Netherlands
| | - Victor P M G Rutten
- Faculty of Veterinary Medicine, Department of Infectious Diseases and Immunology, Utrecht University, Utrecht, Netherlands
| | - Willem van Eden
- Faculty of Veterinary Medicine, Department of Infectious Diseases and Immunology, Utrecht University, Utrecht, Netherlands
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14
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The role of attenuated redox and heat shock protein responses in the age-related decline in skeletal muscle mass and function. Essays Biochem 2017; 61:339-348. [PMID: 28698308 DOI: 10.1042/ebc20160088] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 04/29/2017] [Accepted: 05/11/2017] [Indexed: 11/17/2022]
Abstract
The loss of muscle mass and weakness that accompanies ageing is a major contributor to physical frailty and loss of independence in older people. A failure of muscle to adapt to physiological stresses such as exercise is seen with ageing and disruption of redox regulated processes and stress responses are recognized to play important roles in theses deficits. The role of redox regulation in control of specific stress responses, including the generation of heat shock proteins (HSPs) by muscle appears to be particularly important and affected by ageing. Transgenic and knockout studies in experimental models in which redox and HSP responses were modified have demonstrated the importance of these processes in maintenance of muscle mass and function during ageing. New data also indicate the potential of these processes to interact with and influence ageing in other tissues. In particular the roles of redox signalling and HSPs in regulation of inflammatory pathways appears important in their impact on organismal ageing. This review will briefly indicate the importance of this area and demonstrate how an understanding of the manner in which redox and stress responses interact and how they may be controlled offers considerable promise as an approach to ameliorate the major functional consequences of ageing of skeletal muscle (and potentially other tissues) in man.
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15
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Dishon S, Cohen SJ, Cohen IR, Nussbaum G. Inhibition of Myeloid Differentiation Factor 88 Reduces Human and Mouse T-Cell Interleukin-17 and IFNγ Production and Ameliorates Experimental Autoimmune Encephalomyelitis Induced in Mice. Front Immunol 2017; 8:615. [PMID: 28611775 PMCID: PMC5447018 DOI: 10.3389/fimmu.2017.00615] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 05/09/2017] [Indexed: 01/05/2023] Open
Abstract
Myeloid differentiation factor 88 (MyD88) recruits signaling proteins to the intracellular domain of receptors belonging to the toll-like/interleukin-1 (IL-1) receptor superfamily. Mice lacking MyD88 are highly susceptible to infectious diseases, but tend to resist experimentally induced autoimmune diseases such as experimental autoimmune encephalomyelitis (EAE) and manifest diminished allograft rejection. We reasoned that inhibition of MyD88 should influence the cytokine profile of responding T cells by blocking costimulatory molecule expression by antigen-presenting cells (APCs) and by inhibiting T-cell responses to IL-18. We now report that inhibition of MyD88 in human APCs led to decreased IFNγ and IL-17 production and a shift to IL-4 production by responding T cells in a mixed lymphocyte reaction. Direct inhibition of Myd88 in mouse and human T cells also reduced their production of IFNγ in response to IL-12/IL-18 stimulation. Finally, systemic MyD88 antagonism significantly reduced the clinical manifestations of EAE in mice. Thus, MyD88 appears to be a key factor in determining T cell phenotype and represents a potential target for therapeutic intervention.
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Affiliation(s)
- Shira Dishon
- Institute of Dental Sciences, Hebrew University-Hadassah Faculty of Dental Medicine, Jerusalem, Israel
| | - Shmuel J Cohen
- Institute of Dental Sciences, Hebrew University-Hadassah Faculty of Dental Medicine, Jerusalem, Israel.,Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - Irun R Cohen
- Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - Gabriel Nussbaum
- Institute of Dental Sciences, Hebrew University-Hadassah Faculty of Dental Medicine, Jerusalem, Israel
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16
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Chebotareva N, Bobkova I, Shilov E. Heat shock proteins and kidney disease: perspectives of HSP therapy. Cell Stress Chaperones 2017; 22:319-343. [PMID: 28409327 PMCID: PMC5425374 DOI: 10.1007/s12192-017-0790-0] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 02/11/2017] [Accepted: 03/20/2017] [Indexed: 12/11/2022] Open
Abstract
Heat shock proteins (HSPs) mediate a diverse range of cellular functions, prominently including folding and regulatory processes of cellular repair. A major property of these remarkable proteins, dependent on intracellular or extracellular location, is their capacity for immunoregulation that optimizes immune activity while avoiding hyperactivated inflammation. In this review, recent investigations are described, which examine roles of HSPs in protection of kidney tissue from various traumatic influences and demonstrate their potential for clinical management of nephritic disease. The HSP70 class is particularly attractive in this respect due to its multiple protective effects. The review also summarizes current understanding of HSP bioactivity in the pathophysiology of various kidney diseases, including acute kidney injury, diabetic nephropathy, chronic glomerulonephritis, and lupus nephritis-along with other promising strategies for their remediation, such as DNA vaccination.
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Affiliation(s)
- Natalia Chebotareva
- I.M. Sechenov First Moscow State Medical University, 2-4 Bolshaya Pirogovskaya st., Moscow, Russia, 119992.
| | - Irina Bobkova
- I.M. Sechenov First Moscow State Medical University, 2-4 Bolshaya Pirogovskaya st., Moscow, Russia, 119992
| | - Evgeniy Shilov
- I.M. Sechenov First Moscow State Medical University, 2-4 Bolshaya Pirogovskaya st., Moscow, Russia, 119992
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17
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Biotechnology approaches to produce potent, self-adjuvanting antigen-adjuvant fusion protein subunit vaccines. Biotechnol Adv 2017; 35:375-389. [PMID: 28288861 DOI: 10.1016/j.biotechadv.2017.03.005] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Revised: 03/08/2017] [Accepted: 03/08/2017] [Indexed: 01/07/2023]
Abstract
Traditional vaccination approaches (e.g. live attenuated or killed microorganisms) are among the most effective means to prevent the spread of infectious diseases. These approaches, nevertheless, have failed to yield successful vaccines against many important pathogens. To overcome this problem, methods have been developed to identify microbial components, against which protective immune responses can be elicited. Subunit antigens identified by these approaches enable the production of defined vaccines, with improved safety profiles. However, they are generally poorly immunogenic, necessitating their administration with potent immunostimulatory adjuvants. Since few safe and effective adjuvants are currently used in vaccines approved for human use, with those available displaying poor potency, or an inability to stimulate the types of immune responses required for vaccines against specific diseases (e.g. cytotoxic lymphocytes (CTLs) to treat cancers), the development of new vaccines will be aided by the availability of characterized platforms of new adjuvants, improving our capacity to rationally select adjuvants for different applications. One such approach, involves the addition of microbial components (pathogen-associated molecular patterns; PAMPs), that can stimulate strong immune responses, into subunit vaccine formulations. The conjugation of PAMPs to subunit antigens provides a means to greatly increase vaccine potency, by targeting immunostimulation and antigen to the same antigen presenting cell. Thus, methods that enable the efficient, and inexpensive production of antigen-adjuvant fusions represent an exciting mean to improve immunity towards subunit antigens. Herein we review four protein-based adjuvants (flagellin, bacterial lipoproteins, the extra domain A of fibronectin (EDA), and heat shock proteins (Hsps)), which can be genetically fused to antigens to enable recombinant production of antigen-adjuvant fusion proteins, with a focus on their mechanisms of action, structural or sequence requirements for activity, sequence modifications to enhance their activity or simplify production, adverse effects, and examples of vaccines in preclinical or human clinical trials.
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18
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pVAXhsp65 Vaccination Primes for High IL-10 Production and Decreases Experimental Encephalomyelitis Severity. J Immunol Res 2017; 2017:6257958. [PMID: 28321419 PMCID: PMC5339488 DOI: 10.1155/2017/6257958] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 01/03/2017] [Accepted: 01/23/2017] [Indexed: 11/18/2022] Open
Abstract
Experimental autoimmune encephalomyelitis (EAE) is a demyelinating pathology of the central nervous system (CNS) used as a model to study multiple sclerosis immunopathology. EAE has also been extensively employed to evaluate potentially therapeutic schemes. Considering the presence of an immune response directed to heat shock proteins (hsps) in autoimmune diseases and the immunoregulatory potential of these molecules, we evaluated the effect of a previous immunization with a genetic vaccine containing the mycobacterial hsp65 gene on EAE development. C57BL/6 mice were immunized with 4 pVAXhsp65 doses and 14 days later were submitted to EAE induction by immunization with myelin oligodendrocyte glycoprotein (MOG35–55) emulsified in Complete Freund's Adjuvant. Vaccinated mice presented significant lower clinical scores and lost less body weight. MOG35–55 immunization also determined less inflammation in lumbar spinal cord but did not change CD4+CD25+Foxp3+ T cells frequency in spleen and CNS. Infiltrating cells from the CNS stimulated with rhsp65 produced significantly higher levels of IL-10. These results suggest that the ability of pVAXhsp65 vaccination to control EAE development is associated with IL-10 induction.
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Gomes-Santos AC, de Oliveira RP, Moreira TG, Castro-Junior AB, Horta BC, Lemos L, de Almeida LA, Rezende RM, Cara DC, Oliveira SC, Azevedo VAC, Miyoshi A, Faria AMC. Hsp65-Producing Lactococcus lactis Prevents Inflammatory Intestinal Disease in Mice by IL-10- and TLR2-Dependent Pathways. Front Immunol 2017; 8:30. [PMID: 28194152 PMCID: PMC5277002 DOI: 10.3389/fimmu.2017.00030] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 01/09/2017] [Indexed: 12/14/2022] Open
Abstract
Heat shock proteins (Hsps) are highly expressed at all sites of inflammation. As they are ubiquitous and immunodominant antigens, these molecules represent good candidates for the therapeutic use of oral tolerance in autoimmune and chronic inflammatory diseases. Evidences from human and animal studies indicate that inflammatory bowel disease (IBD) results from uncontrolled inflammatory responses to intestinal microbiota. Hsps are immunodominant proteins expressed by several immune cells and by commensal bacteria. Using an IBD mouse model, we showed that oral pretreatment with genetically modified Lactococcus lactis that produces and releases Mycobacterium Hsp65, completely prevented DSS-induced colitis in C57BL/6 mice. Protection was associated with reduced pro-inflammatory cytokines, such as IFN-γ, IL-6, and TNF-α; increased IL-10 production in colonic tissue; and expansion of CD4+Foxp3+ and CD4+LAP+ regulatory T cells in spleen and mesenteric lymph nodes. This effect was dependent on IL-10 and toll-like receptor 2. Thus, this approach may open alternative options for long-term management of IBD.
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Affiliation(s)
- Ana Cristina Gomes-Santos
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; Centro Universitário UNA, Belo Horizonte, Brazil
| | - Rafael Pires de Oliveira
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; Instituto Federal do Paraná, Palmas, Brazil
| | - Thaís Garcias Moreira
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais , Belo Horizonte , Brazil
| | | | - Bernardo Coelho Horta
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais , Belo Horizonte , Brazil
| | - Luísa Lemos
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais , Belo Horizonte , Brazil
| | - Leonardo Augusto de Almeida
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; Departamento de Microbiologia e Imunologia, Universidade Federal de Alfenas, Alfenas, Brazil
| | - Rafael Machado Rezende
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; Ann Ronmey Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Denise Carmona Cara
- Departamento de Morfologia, Universidade Federal de Minas Gerais , Belo Horizonte , Brazil
| | - Sérgio Costa Oliveira
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais , Belo Horizonte , Brazil
| | | | - Anderson Miyoshi
- Departamento de Biologia Geral, Universidade Federal de Minas Gerais , Belo Horizonte , Brazil
| | - Ana Maria Caetano Faria
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais , Belo Horizonte , Brazil
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Srikanth K, Kwon A, Lee E, Chung H. Characterization of genes and pathways that respond to heat stress in Holstein calves through transcriptome analysis. Cell Stress Chaperones 2017; 22:29-42. [PMID: 27848120 PMCID: PMC5225057 DOI: 10.1007/s12192-016-0739-8] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 09/21/2016] [Accepted: 10/06/2016] [Indexed: 12/20/2022] Open
Abstract
This study aimed to investigate the genes and pathways that respond to heat stress in Holstein bull calves exposed to severe ranges of temperature and humidity. A total of ten animals from 4 to 6 months of age were subjected to heat stress at 37 °C and 90 % humidity for 12 h. Skin and rectal temperatures were measured before and after heat stress; while no correlation was found between them before heat stress, a moderate correlation was detected after heat stress, confirming rectal temperature to be a better barometer for monitoring heat stress. RNAseq analysis identified 8567 genes to be differentially regulated, out of which 465 genes were significantly upregulated (≥2-fold, P < 0.05) and 49 genes were significantly downregulated (≤2-fold, P < 0.05) in response to heat stress. Significant terms and pathways enriched in response to heat stress included chaperones, cochaperones, cellular response to heat stress, phosphorylation, kinase activation, immune response, apoptosis, Toll-like receptor signaling pathway, Pi3K/AKT activation, protein processing in endoplasmic reticulum, interferon signaling, pathways in cancer, estrogen signaling pathway, and MAPK signaling pathway. The differentially expressed genes were validated by quantitative real-time PCR analysis, which confirmed the tendency of the expression. The genes and pathways identified in this analysis extend our understanding of transcriptional response to heat stress and their likely functioning in adapting the animal to hyperthermic stress. The identified genes could be used as candidate genes for association studies to select and breed animals with improved heat tolerance.
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Affiliation(s)
- Krishnamoorthy Srikanth
- Animal Genomics and Bioinformatics Division, National Institute of Animal Science, Wanju, Jeollabuk-do, 565-851, Korea
| | - Anam Kwon
- Animal Genomics and Bioinformatics Division, National Institute of Animal Science, Wanju, Jeollabuk-do, 565-851, Korea
| | - Eunjin Lee
- Animal Genomics and Bioinformatics Division, National Institute of Animal Science, Wanju, Jeollabuk-do, 565-851, Korea
| | - Hoyoung Chung
- Animal Genomics and Bioinformatics Division, National Institute of Animal Science, Wanju, Jeollabuk-do, 565-851, Korea.
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21
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Knowlton AA. Paying for the Tolls: The High Cost of the Innate Immune System for the Cardiac Myocyte. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1003:17-34. [PMID: 28667552 DOI: 10.1007/978-3-319-57613-8_2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The cardiac myocyte differs strikingly from the specialized cells of the immune system, which has two different responses to invading organisms and tissue damage. Adaptive or acquired immunity generates highly specific antibodies in response to threats and is an essential component of immunity; however, adaptive immunity can take 4-7 days to mobilize, and a more primitive response, innate immunity, fills the gap. Innate immunity is expressed in complex and in primitive life forms. Specialized receptors, Toll-like receptors (TLRs), which are widely distributed throughout different tissues recognize danger signals and rapidly respond with the release of noxious substances, such as TNFα. The problem is that many endogenous molecules have been found to act as ligands for specific TLRs, and when these molecules are released into the extracellular environment, they can cause problems by activating innate immunity and an inflammatory response. In cardiac myocytes heat shock protein (HSP)60 can activate TLR4, as can HMGB1, and this type of response can amplify the response to ischemia/reperfusion leading to increased cell and tissue injury. Activation of TLRs can potentially amplify chronic, inflammatory diseases, such as ischemic heart failure. Thus, it is important to understand the regulation of the TLRs and their downstream effects. This chapter will focus on the TLRs and cardiac myocytes.
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Affiliation(s)
- Anne A Knowlton
- Cardiovascular Division, Department of Medicine, Molecular and Cellular Cardiology, University of California, Davis, One Shields Avenue, Davis, CA, 95616, USA. .,Department of Pharmacology, University of California, Davis, CA, USA. .,The Department of Veteran's Affairs, Northern California VA, Sacramento, CA, USA.
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22
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Hossain MJ, Tanasescu R, Gran B. Innate immune regulation of autoimmunity in multiple sclerosis: Focus on the role of Toll-like receptor 2. J Neuroimmunol 2016; 304:11-20. [PMID: 28007303 DOI: 10.1016/j.jneuroim.2016.12.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 12/11/2016] [Indexed: 02/06/2023]
Abstract
Innate immunity relies on a set of germline-encoded receptors including Toll-like receptors (TLRs) that enable the host to discriminate between self and non-self. Multiple sclerosis (MS) is an autoimmune inflammatory demyelinating disease of the central nervous system (CNS). Infections are thought to play an important role in disease susceptibility. The role of innate immunity in MS has been recently appreciated. TLR2, a member of the TLR family, forms heterodimers with either TLR1 or TLR6 and detects a wide range of microbial as well as self-derived molecular structures. It may thus be important both in fighting infection and in activating autoimmunity. In this review, we discuss innate regulation of autoimmunity in MS with a focus on the role of TLR2 signaling.
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Affiliation(s)
- Md Jakir Hossain
- Division of Clinical Neuroscience, University of Nottingham, School of Medicine, Queen's Medical Centre, Nottingham NG7 2UH, United Kingdom
| | - Radu Tanasescu
- Division of Clinical Neuroscience, University of Nottingham, School of Medicine, Queen's Medical Centre, Nottingham NG7 2UH, United Kingdom; Department of Neurology, Neurosurgery and Psychiatry, University of Medicine and Pharmacy Carol Davila, Colentina Hospital, Bucharest, Romania
| | - Bruno Gran
- Division of Clinical Neuroscience, University of Nottingham, School of Medicine, Queen's Medical Centre, Nottingham NG7 2UH, United Kingdom; Department of Neurology, Nottingham University Hospitals NHS Trust, Nottingham NG7 2UH, United Kingdom.
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23
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Kim EY, Durai M, Mia Y, Kim HR, Moudgil KD. Modulation of Adjuvant Arthritis by Cellular and Humoral Immunity to Hsp65. Front Immunol 2016; 7:203. [PMID: 27379088 PMCID: PMC4904002 DOI: 10.3389/fimmu.2016.00203] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Accepted: 05/10/2016] [Indexed: 12/02/2022] Open
Abstract
Heat shock proteins (Hsps) are highly conserved, and their expression is upregulated in cells by heat and other stressful stimuli. These proteins play a vital role in preserving the structural and functional integrity of cells under stress. Despite the ubiquitous expression of Hsps in an individual, the immune system is not fully tolerant to them. In fact, Hsps are highly immunogenic in nature, and immune response to these proteins is observed in various inflammatory and autoimmune diseases. Studies on the immunopathogenesis of autoimmune arthritis in the rat adjuvant arthritis (AA) model of human rheumatoid arthritis (RA) as well as observations in patients with RA and juvenile idiopathic arthritis (JIA) have unraveled immunoregulatory attributes of self-Hsp65-directed immunity. Notable features of Hsp65 immunity in AA include protection rather than disease induction following immunization of Lewis rats with self (rat)-Hsp65; the diversification of T cell response to mycobacterial Hsp65 during the course of AA and its association with spontaneous induction of response to self-Hsp65; the cross-reactive T cells recognizing foreign and self homologs of Hsp65 and their role in disease suppression in rats; the suppressive effect of antibodies to Hsp65 in AA; and the use of Hsp65, its peptides, or altered peptide ligands in controlling autoimmune pathology. The results of studies in the AA model have relevance to RA and JIA. We believe that these insights into Hsp65 immunity would not only advance our understanding of the disease process in RA/JIA, but also lead to the development of novel therapeutic approaches for autoimmune arthritis.
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Affiliation(s)
- Eugene Y Kim
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, USA; Department of Pharmaceutical Sciences, Washington State University College of Pharmacy, Spokane, WA, USA
| | - Malarvizhi Durai
- Department of Microbiology and Immunology, University of Maryland School of Medicine , Baltimore, MD , USA
| | - Younus Mia
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, USA; Department of Pharmacy Services, University of Maryland Medical Center, Baltimore, MD, USA
| | - Hong R Kim
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, USA; Chong Kun Dang Pharmaceutical Institute, Yongin-si, Korea
| | - Kamal D Moudgil
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, USA; Department of Medicine, Division of Rheumatology, University of Maryland School of Medicine, Baltimore, MD, USA; Baltimore VA Medical Center, Baltimore, MD, USA
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Swiatczak B, Cohen IR. Gut feelings of safety: tolerance to the microbiota mediated by innate immune receptors. Microbiol Immunol 2016; 59:573-85. [PMID: 26306708 DOI: 10.1111/1348-0421.12318] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 08/09/2015] [Accepted: 08/20/2015] [Indexed: 12/11/2022]
Abstract
To enable microbial colonization of the gut mucosa, the intestinal immune system must not only react to danger signals but also recognize cues that indicate safety. Recognition of safety, paradoxically, is mediated by the same environmental sensors that are involved in signaling danger. Indeed, in addition to their well-established role in inducing inflammation in response to stress signals, pattern recognition receptors and a variety of metabolic sensors also promote gut-microbiota symbiosis by responding to "microbial symbiosis factors", "resolution-associated molecular patterns", markers of energy extraction and other signals indicating the absence of pathogenic infection and tissue damage. Here we focus on how the paradoxical roles of immune receptors and other environmental sensors define the microbiota signature of an individual.
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Affiliation(s)
- Bartlomiej Swiatczak
- Department of History of Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, China
| | - Irun R Cohen
- Department of Immunology, Weizmann Institute of Science, Rehovot, 76100, Israel
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25
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Cabibi D, Conway de Macario E, Ingrao S, Porcasi R, Zucco F, Macario AJL, Cappello F, Rappa F. CD1A-positive cells and HSP60 (HSPD1) levels in keratoacanthoma and squamous cell carcinoma. Cell Stress Chaperones 2016; 21:131-137. [PMID: 26442925 PMCID: PMC4679739 DOI: 10.1007/s12192-015-0646-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 09/24/2015] [Accepted: 09/25/2015] [Indexed: 11/26/2022] Open
Abstract
CD1a is involved in presentation to the immune system of lipid antigen derived from tumor cells with subsequent T cell activation. Hsp60 is a molecular chaperone implicated in carcinogenesis by, for instance, modulating the immune reaction against the tumor. We have previously postulated a synergism between CD1a and Hsp60 as a key factor in the activation of an effective antitumor immune response in squamous epithelia. Keratoacantomas (KAs) are benign tumors that however can transform into squamous cell carcinomas (SCCs), but the reasons for this malignization are unknown. In a previous study, we found that CD1a-positive cells are significantly more numerous in KA than in SCC. In this study, we analyzed a series of KAs and SCCs by immunohistochemistry for CD1a and Hsp60. Our results show that the levels of both are significantly lower in KA than in SCC and support the hypothesis that KA may evolve towards SCC if there is a failure of the local modulation of the antitumor immune response. The data also show that immunohistochemistry for CD1a and Hsp60 can be of help in differential diagnosis between KAs and well-differentiated forms of SCC.
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Affiliation(s)
- Daniela Cabibi
- Pathology Institute, Department "G. D'Alessandro", University of Palermo, Palermo, Italy
| | - Everly Conway de Macario
- Department of Microbiology and Immunology, School of Medicine, University of Maryland at Baltimore and IMET, Columbus Center, Baltimore, MD, USA
| | - Sabrina Ingrao
- Pathology Institute, Department "G. D'Alessandro", University of Palermo, Palermo, Italy
| | - Rossana Porcasi
- Pathology Institute, Department "G. D'Alessandro", University of Palermo, Palermo, Italy
| | - Francesco Zucco
- Pathology Institute, Department "G. D'Alessandro", University of Palermo, Palermo, Italy
| | - Alberto J L Macario
- Department of Microbiology and Immunology, School of Medicine, University of Maryland at Baltimore and IMET, Columbus Center, Baltimore, MD, USA
- Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy
| | - Francesco Cappello
- Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy
- Department of Experimental Biomedicine and Clinical Neurosciences, University of Palermo, Palermo, Italy
| | - Francesca Rappa
- Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy.
- Department of Experimental Biomedicine and Clinical Neurosciences, University of Palermo, Palermo, Italy.
- Department of Legal Science, Society and Sports, University of Palermo, Palermo, Italy.
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26
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Feldman N, Rotter-Maskowitz A, Okun E. DAMPs as mediators of sterile inflammation in aging-related pathologies. Ageing Res Rev 2015; 24:29-39. [PMID: 25641058 DOI: 10.1016/j.arr.2015.01.003] [Citation(s) in RCA: 189] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Revised: 12/29/2014] [Accepted: 01/19/2015] [Indexed: 12/20/2022]
Abstract
Accumulating evidence indicates that aging is associated with a chronic low-level inflammation, termed sterile-inflammation. Sterile-inflammation is a form of pathogen-free inflammation caused by mechanical trauma, ischemia, stress or environmental conditions such as ultra-violet radiation. These damage-related stimuli induce the secretion of molecular agents collectively termed danger-associated molecular patterns (DAMPs). DAMPs are recognized by virtue of specialized innate immune receptors, such as toll-like receptors (TLRs) and NOD-like receptor family, pyrin domain containing 3 (NLRP3). These receptors initiate signal transduction pathways, which typically drive inflammation in response to microbe-associated molecular patterns (MAMPs) and/or DAMPs. This review summarizes the current knowledge on DAMPs-mediated sterile-inflammation, its associated downstream signaling, and discusses the possibility that DAMPs activating TLRs or NLRP3 complex mediate sterile inflammation during aging and in aging-related pathologies.
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Affiliation(s)
- Noa Feldman
- The Mina and Everard Goodman Faculty of Life Sciences, The Gonda Multidisciplinary Brain Research Center, Bar Ilan University, Ramat-Gan 5290002, Israel
| | - Aviva Rotter-Maskowitz
- The Mina and Everard Goodman Faculty of Life Sciences, The Gonda Multidisciplinary Brain Research Center, Bar Ilan University, Ramat-Gan 5290002, Israel
| | - Eitan Okun
- The Mina and Everard Goodman Faculty of Life Sciences, The Gonda Multidisciplinary Brain Research Center, Bar Ilan University, Ramat-Gan 5290002, Israel.
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27
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Zachova K, Krupka M, Raska M. Antigen Cross-Presentation and Heat Shock Protein-Based Vaccines. Arch Immunol Ther Exp (Warsz) 2015; 64:1-18. [DOI: 10.1007/s00005-015-0370-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 08/31/2015] [Indexed: 12/15/2022]
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Łagiedo M, Sikora J, Kaczmarek M. Damage-Associated Molecular Patterns in the Course of Lung Cancer - A Review. Scand J Immunol 2015; 82:95-101. [DOI: 10.1111/sji.12308] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 05/05/2015] [Indexed: 11/28/2022]
Affiliation(s)
- M. Łagiedo
- Department of Immunology; Chair of Clinical Immunology; University of Medical Sciences; Poznań Poland
| | - J. Sikora
- Department of Immunology; Chair of Clinical Immunology; University of Medical Sciences; Poznań Poland
| | - M. Kaczmarek
- Department of Immunology; Chair of Clinical Immunology; University of Medical Sciences; Poznań Poland
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29
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Caster DJ, Korte EA, Merchant ML, Klein JB, Wilkey DW, Rovin BH, Birmingham DJ, Harley JB, Cobb BL, Namjou B, McLeish KR, Powell DW. Autoantibodies targeting glomerular annexin A2 identify patients with proliferative lupus nephritis. Proteomics Clin Appl 2015; 9:1012-20. [PMID: 25824007 DOI: 10.1002/prca.201400175] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 02/10/2015] [Accepted: 03/26/2015] [Indexed: 11/09/2022]
Abstract
PURPOSE Patients with systemic lupus erythematosus (SLE) frequently develop lupus nephritis (LN), a complication frequently leading to end stage kidney disease. Immune complex deposition in the glomerulus is central to the development of LN. Using a targeted proteomic approach, we tested the hypothesis that autoantibodies targeting glomerular antigens contribute to the development of LN. EXPERIMENTAL DESIGN Human podocyte and glomerular proteins were separated by SDS-PAGE and immunoblotted with sera from SLE patients with and without LN. The regions of those gels corresponding to reactive bands observed with sera from LN patients were analyzed using LC-MS/MS. RESULTS LN reactive bands were seen at approximately 50 kDa in podocyte extracts and between 36 and 50 kDa in glomerular extracts. Those bands were analyzed by LC-MS/MS and 102 overlapping proteins were identified. Bioinformatic analysis determined that 36 of those proteins were membrane associated, including a protein previously suggested to contribute to glomerulonephritis and LN, annexin A2. By ELISA, patients with proliferative LN demonstrated significantly increased antibodies against annexin A2. CONCLUSION AND CLINICAL RELEVANCE Proteomic approaches identified multiple candidate antigens for autoantibodies in patients with LN. Serum antibodies against annexin A2 were significantly elevated in subjects with proliferative LN, validating those antibodies as potential biomarkers.
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Affiliation(s)
- Dawn J Caster
- Department of Medicine, University of Louisville School of Medicine, Louisville, KY, USA.,Robley Rex Veterans Affairs Medical Center, Louisville, KY, USA
| | - Erik A Korte
- Department of Biochemistry and Molecular Biology, University of Louisville School of Medicine, Louisville, KY, USA
| | - Michael L Merchant
- Department of Medicine, University of Louisville School of Medicine, Louisville, KY, USA
| | - Jon B Klein
- Department of Medicine, University of Louisville School of Medicine, Louisville, KY, USA.,Robley Rex Veterans Affairs Medical Center, Louisville, KY, USA
| | - Daniel W Wilkey
- Department of Medicine, University of Louisville School of Medicine, Louisville, KY, USA
| | - Brad H Rovin
- Department of Medicine, the Ohio State University, Columbus, OH, USA
| | - Dan J Birmingham
- Department of Medicine, the Ohio State University, Columbus, OH, USA
| | - John B Harley
- Center for Autoimmune Genomics and Etiology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center and the University of Cincinnati, Cincinnati, OH, USA.,US Department of Veterans Affairs Medical Center, Cincinnati, OH, USA
| | - Beth L Cobb
- Center for Autoimmune Genomics and Etiology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center and the University of Cincinnati, Cincinnati, OH, USA
| | - Bahram Namjou
- Center for Autoimmune Genomics and Etiology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center and the University of Cincinnati, Cincinnati, OH, USA
| | - Kenneth R McLeish
- Department of Medicine, University of Louisville School of Medicine, Louisville, KY, USA.,Robley Rex Veterans Affairs Medical Center, Louisville, KY, USA
| | - David W Powell
- Department of Medicine, University of Louisville School of Medicine, Louisville, KY, USA.,Department of Biochemistry and Molecular Biology, University of Louisville School of Medicine, Louisville, KY, USA
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30
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Endotoxin-minimized HIV-1 p24 fused to murine hsp70 activates dendritic cells, facilitates endocytosis and p24-specific Th1 response in mice. Immunol Lett 2015; 166:36-44. [PMID: 26021827 DOI: 10.1016/j.imlet.2015.05.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 04/22/2015] [Accepted: 05/15/2015] [Indexed: 11/24/2022]
Abstract
Heat shock proteins hsp70 and gp96 have been confirmed as adjuvants enabling induction of cell- and antibody-mediated immunity specific to associated protein or peptide antigens due to the activation of naive dendritic cells and supporting cross-presentation of associated antigen. An efficacious vaccine preventing HIV-1 infection should induce (1) antibodies neutralizing HIV-1 Env protein, preventing virus spreading and (2) CD4(+) Th1 and CD8(+) T cells specific to viral proteins, especially gag p24, important for elimination of HIV-1 infected cells. As p24 is relatively poorly recognized by dendritic cells, its targeting to DC is important for enhancement of vaccine efficacy. In this study, a p24 protein fused to the C- or N-terminus of murine hsp70 was produced as a recombinant protein and administered without any adjuvant to experimental BALB/c mice. Consequently, p24-specific cellular and humoral immune responses were measured. To minimize the effect of bacterial endotoxin, each protein was subjected to a repeated endotoxin phase extraction until each preparation contained less than 2.5 endotoxin unit (EU) per mg of antigen. In addition, endocytosis of p24 fused to hsp70 by dendritic cells and their activation were characterized. The fusion to hsp70 protein enhanced endocytosis of p24 as well as activation of dendritic cells in vitro. After immunization of mice, hsp70-p24 fusion protein induced the strongest p24-specific CD4(+) and CD8(+) T cells (IFN-γ production) and humoral (IgG2b) responses corresponding to Th1 type dominance, whereas p24-hsp70 or p24 itself induced weaker responses.
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31
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Heiserman JP, Chen L, Kim BS, Kim SC, Tran AL, Siebenborn N, Knowlton AA. TLR4 mutation and HSP60-induced cell death in adult mouse cardiac myocytes. Cell Stress Chaperones 2015; 20:527-35. [PMID: 25716072 PMCID: PMC4406935 DOI: 10.1007/s12192-015-0577-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 02/06/2015] [Accepted: 02/11/2015] [Indexed: 01/04/2023] Open
Abstract
Extracellular (ex) HSP60 is increasingly recognized as an agent of cell injury. Previously, we reported that low endotoxin exHSP60 causes cardiac myocyte apoptosis. Our findings supported a role for Toll-like receptor (TLR) 4 in HSP60 mediated apoptosis. To further investigate the involvement of TLR4 in cardiac injury, we studied adult cardiac myocytes from C3H/HeJ (HeJ) mice, which have a mutant, nonfunctional TLR4, and compared the results with parallel studies using wild-type (WT) mice. Nuclear factor κB (NFκB) activation is an early step downstream of TLR4. NFκB was activated 1 h after treatment with HSP60 in WT, but not HeJ mouse myocytes. ExHSP60 caused apoptosis in cardiac myocytes from WT mice, but not in myocytes from the HeJ mutants. To further elucidate the importance of exHSP60 in cardiac myocyte injury, both WT and HeJ mutant isolated mouse adult cardiac myocytes were exposed to hypoxia/reoxygenation. Anti-HSP60 antibody treatment reduced apoptosis in the WT group, but had no effect on the HeJ mutant myocytes. Unexpectedly, necrosis was also decreased in the HeJ mutants. Necrosis after hypoxia/reoxygenation in WT cardiac myocytes was mediated in part by TLR2 and TLR4 through rapid activation of PKCα, followed by increased expression of Nox2, and this was ameliorated by blocking antibodies to TLR2/4. These studies provide further evidence that TLR4 mediates exHSP60-associated apoptosis and that exHSP60 has an important role in cardiac myocyte injury, both apoptotic and necrotic.
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Affiliation(s)
- J. P. Heiserman
- />Molecular and Cellular Cardiology, Department of Medicine, University of California, One Shields Avenue, Davis, CA 95616 USA
| | - L. Chen
- />Molecular and Cellular Cardiology, Department of Medicine, University of California, One Shields Avenue, Davis, CA 95616 USA
| | - B. S. Kim
- />Molecular and Cellular Cardiology, Department of Medicine, University of California, One Shields Avenue, Davis, CA 95616 USA
- />Division of Cardiology, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S. C. Kim
- />Molecular and Cellular Cardiology, Department of Medicine, University of California, One Shields Avenue, Davis, CA 95616 USA
| | - A. L. Tran
- />Molecular and Cellular Cardiology, Department of Medicine, University of California, One Shields Avenue, Davis, CA 95616 USA
| | - N. Siebenborn
- />Molecular and Cellular Cardiology, Department of Medicine, University of California, One Shields Avenue, Davis, CA 95616 USA
| | - A. A. Knowlton
- />Molecular and Cellular Cardiology, Department of Medicine, University of California, One Shields Avenue, Davis, CA 95616 USA
- />VA Medical Center, Sacramento, CA USA
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32
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Ulmansky R, Landstein D, Moallem E, Loeb V, Levin A, Meyuhas R, Katzavian G, Yair S, Naparstek Y. A Humanized Monoclonal Antibody against Heat Shock Protein 60 Suppresses Murine Arthritis and Colitis and Skews the Cytokine Balance toward an Anti-Inflammatory Response. THE JOURNAL OF IMMUNOLOGY 2015; 194:5103-9. [PMID: 25904550 DOI: 10.4049/jimmunol.1500023] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 03/25/2015] [Indexed: 01/27/2023]
Abstract
We have previously shown that naturally occurring as well as acquired Abs against the Mycobacterium tuberculosis heat shock protein (HSP)65 protect against the induction of murine autoimmune inflammatory arthritis. In the present work, we have studied the anti-inflammatory effect of prozumab, a humanized anti-HSP mAb in murine inflammatory arthritis and colitis, and its effects on cytokine secretion. Prozumab was shown to bind to HSP60, the highly conserved mammalian homolog of the bacterial protein, and it was found to be effective in protecting and suppressing autoimmune arthritis in the models of adjuvant arthritis and collagen-induced arthritis in rats and mice, respectively, as well as in acute hapten-mediated colitis and chronic, spontaneous colitis models. Mechanistically, prozumab induces IL-10 secretion from naive human PBMCs and suppresses the secretion of IFN-γ and IL-6 from anti-CD3-activated human PBMCs. These findings make prozumab a promising potential drug for treating human rheumatoid arthritis and inflammatory bowel disease, as well as a wide range of autoimmune inflammatory diseases.
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Affiliation(s)
- Rina Ulmansky
- Department of Medicine, Hadassah University Hospital, Jerusalem 91120, Israel; and
| | | | - Eli Moallem
- Department of Medicine, Hadassah University Hospital, Jerusalem 91120, Israel; and
| | | | - Avi Levin
- Department of Medicine, Hadassah University Hospital, Jerusalem 91120, Israel; and
| | | | | | | | - Yaakov Naparstek
- Department of Medicine, Hadassah University Hospital, Jerusalem 91120, Israel; and ProtAb Ltd., Jerusalem 91120, Israel
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33
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Chatillon JF, Hamieh M, Bayeux F, Abasq C, Fauquembergue E, Drouet A, Guisier F, Latouche JB, Musette P. Direct Toll-Like Receptor 8 signaling increases the functional avidity of human CD8+ T lymphocytes generated for adoptive T cell therapy strategies. IMMUNITY INFLAMMATION AND DISEASE 2015; 3:1-13. [PMID: 25866635 PMCID: PMC4386909 DOI: 10.1002/iid3.43] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Revised: 08/25/2014] [Accepted: 09/13/2014] [Indexed: 11/14/2022]
Abstract
Adoptive transfer of in vitro activated and expanded antigen-specific cytotoxic T lymphocytes (CTLs) is a promising therapeutic strategy for infectious diseases and cancers. Obtaining in vitro a sufficient amount of highly specific cytotoxic cells and capable of retaining cytotoxic activity in vivo remains problematic. We studied the role of Toll-Like Receptor-8 (TLR8) engagement on peripheral CTLs activated with melanoma antigen MART-1-expressing artificial antigen-presenting cells (AAPCs). After a 3-week co-culture, 3–27% of specific CTLs were consistently obtained. CTLs expressed TLR8 in the intracellular compartment and at the cell surface. Specific CTLs activated with a TLR8 agonist (CL075) 24 h before the end of the culture displayed neither any change in their production levels of molecules involved in cytotoxicity (IFN-γ, Granzyme B, and TNF-α) nor major significant change in their cell surface phenotype. However, these TLR8-stimulated lymphocytes displayed increased cytotoxic activity against specific peptide-pulsed target cells related to an increase in specific anti-melanoma CTL functional avidity. TLR8 engagement on CTLs could, therefore, be useful in different immunotherapy strategies.
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Affiliation(s)
- Jean-François Chatillon
- University of Rouen Rouen, France ; Institut National de la Santé et de la Recherche Médicale (INSERM) U905 Rouen, France
| | - Mohamad Hamieh
- University of Rouen Rouen, France ; INSERM U1079 Rouen, France
| | - Florence Bayeux
- Institut National de la Santé et de la Recherche Médicale (INSERM) U905 Rouen, France
| | - Claire Abasq
- University of Rouen Rouen, France ; Institut National de la Santé et de la Recherche Médicale (INSERM) U905 Rouen, France ; Rouen University Hospital Rouen, France
| | | | | | - Florian Guisier
- University of Rouen Rouen, France ; Institut National de la Santé et de la Recherche Médicale (INSERM) U905 Rouen, France ; Rouen University Hospital Rouen, France
| | - Jean-Baptiste Latouche
- University of Rouen Rouen, France ; INSERM U1079 Rouen, France ; Rouen University Hospital Rouen, France
| | - Philippe Musette
- University of Rouen Rouen, France ; Institut National de la Santé et de la Recherche Médicale (INSERM) U905 Rouen, France ; Rouen University Hospital Rouen, France
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Abstract
Atrial fibrillation (AF) is the most common cardiac arrhythmia. However, the development of preventative therapies for AF has been disappointing. The infiltration of immune cells and proteins that mediate the inflammatory response in cardiac tissue and circulatory processes is associated with AF. Furthermore, the presence of inflammation in the heart or systemic circulation can predict the onset of AF and recurrence in the general population, as well as in patients after cardiac surgery, cardioversion, and catheter ablation. Mediators of the inflammatory response can alter atrial electrophysiology and structural substrates, thereby leading to increased vulnerability to AF. Inflammation also modulates calcium homeostasis and connexins, which are associated with triggers of AF and heterogeneous atrial conduction. Myolysis, cardiomyocyte apoptosis, and the activation of fibrotic pathways via fibroblasts, transforming growth factor-β and matrix metalloproteases are also mediated by inflammatory pathways, which can all contribute to structural remodelling of the atria. The development of thromboembolism, a detrimental complication of AF, is also associated with inflammatory activity. Understanding the complex pathophysiological processes and dynamic changes of AF-associated inflammation might help to identify specific anti-inflammatory strategies for the prevention of AF.
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35
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Role of Extracellular Damage-Associated Molecular Pattern Molecules (DAMPs) as Mediators of Persistent Pain. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2015; 131:251-79. [DOI: 10.1016/bs.pmbts.2014.11.014] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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36
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Ferreira GB, Baeke F, Verstuyf A, De Clercq P, Waelkens E, Mathieu C, Overbergh L. A proteomic approach on the effects of TX527, a 1α,25-dihydroxyvitamin D3 analog, in human T lymphocytes. J Steroid Biochem Mol Biol 2014; 144 Pt A:96-101. [PMID: 24176759 DOI: 10.1016/j.jsbmb.2013.10.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Revised: 10/16/2013] [Accepted: 10/18/2013] [Indexed: 10/26/2022]
Abstract
1α,25-Dihydroxyvitamin D3 (1α,25(OH)2D3), and its analogs (i.e. 14,20-bis-epi-19-nor-23-yne-1α,25(OH)2D3 - TX527) have been shown to prevent autoimmunity and prolong islet graft survival in the non-obese diabetic (NOD) mouse. Their effects are mediated by their action on various immune cell types, such as dendritic cells (DC) and T cells. We have previously reported important direct effects of TX527 on human T cells, on their cytokine/chemokine profiles, T regulatory cell markers, homing characteristics and chemotaxis. In order to fully understand the molecular mechanisms underlying the beneficial properties of TX527 on human T cells, we applied here 2-dimensional difference gel electrophoresis (2-D DIGE) to analyze the global protein alterations induced by TX527 on human synchronized T cells. We detected differential expression of 64 protein spots upon TX527 treatment, of which 65.6% could be successfully identified using tandem mass spectrometry (MALDI-TOF/TOF). The identified proteins function in various processes, such as metabolism and energy pathways, cytoskeleton and protein metabolism. When comparing the proteomics data to our previously performed microarray data on the same set of cells, we found an overlap of 17 different mRNAs/proteins. For some of these (e.g. PSME2, HSPA8), the direction of regulation was not similar, hereby reinforcing the important role of post-transcriptional/translational processes in the functionality of proteins. In addition, although 2-D DIGE offers the possibility of picking up post-translational processes, it lacks the ability to detect molecules with extreme molecular weight (MW) and isoelectrical point (pI) values, or very low abundant/hydrophobic proteins. This study highlights therefore the importance of combining different experimental approaches to obtain a complete picture of the underlying mechanisms and general processes being affected in T cells upon TX527 treatment. These processes lead altogether to the generation of T cells with interesting immunomodulatory features for clinical applications in the treatment of autoimmune diseases or in the prevention of graft rejection. This article is part of a Special Issue entitled '16th Vitamin D Workshop'.
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Affiliation(s)
- G B Ferreira
- Laboratory of Clinical and Experimental Endocrinology, University Hospital Gasthuisberg, KU LEUVEN, Herestraat 49, Box 902, B-3000 Leuven, Belgium
| | - F Baeke
- Laboratory of Clinical and Experimental Endocrinology, University Hospital Gasthuisberg, KU LEUVEN, Herestraat 49, Box 902, B-3000 Leuven, Belgium
| | - A Verstuyf
- Laboratory of Clinical and Experimental Endocrinology, University Hospital Gasthuisberg, KU LEUVEN, Herestraat 49, Box 902, B-3000 Leuven, Belgium
| | - P De Clercq
- Laboratory for Organic Synthesis, Ghent University, Krijgslaan 281, S4, B-9000 Ghent, Belgium
| | - E Waelkens
- Laboratory for Protein Phosphorylation and Proteomics, University Hospital Gasthuisberg, KU LEUVEN, Herestraat 49, Box 901, B-3000 Leuven, Belgium
| | - C Mathieu
- Laboratory of Clinical and Experimental Endocrinology, University Hospital Gasthuisberg, KU LEUVEN, Herestraat 49, Box 902, B-3000 Leuven, Belgium
| | - L Overbergh
- Laboratory of Clinical and Experimental Endocrinology, University Hospital Gasthuisberg, KU LEUVEN, Herestraat 49, Box 902, B-3000 Leuven, Belgium.
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37
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Abstract
Atherosclerosis is a chronic, multifactorial disease that starts in youth, manifests clinically later in life, and can lead to myocardial infarction, stroke, claudication, and death. Although inflammatory processes have long been known to be involved in atherogenesis, interest in this subject has grown in the past 30-40 years. Animal experiments and human analyses of early atherosclerotic lesions have shown that the first pathogenic event in atherogenesis is the intimal infiltration of T cells at arterial branching points. These T cells recognize heat shock protein (HSP)60, which is expressed together with adhesion molecules by endothelial cells in response to classic risk factors for atherosclerosis. Although these HSP60-reactive T cells initiate atherosclerosis, antibodies to HSP60 accelerate and perpetuate the disease. All healthy humans develop cellular and humoral immunity against microbial HSP60 by infection or vaccination. Given that prokaryotic (bacterial) and eukaryotic (for instance, human) HSP60 display substantial sequence homology, atherosclerosis might be the price we pay for this protective immunity, if risk factors stress the vascular endothelial cells beyond physiological conditions.
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38
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Cole JE, Mitra AT, Monaco C. Treating atherosclerosis: the potential of Toll-like receptors as therapeutic targets. Expert Rev Cardiovasc Ther 2014; 8:1619-35. [DOI: 10.1586/erc.10.149] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Raz I, Ziegler AG, Linn T, Schernthaner G, Bonnici F, Distiller LA, Giordano C, Giorgino F, de Vries L, Mauricio D, Procházka V, Wainstein J, Elias D, Avron A, Tamir M, Eren R, Peled D, Dagan S, Cohen IR, Pozzilli P. Treatment of recent-onset type 1 diabetic patients with DiaPep277: results of a double-blind, placebo-controlled, randomized phase 3 trial. Diabetes Care 2014; 37:1392-400. [PMID: 24757230 DOI: 10.2337/dc13-1391] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To evaluate safety and efficacy of DiaPep277 in preserving β-cell function in type 1 diabetic patients. RESEARCH DESIGN AND METHODS DIA-AID 1 is a multinational, phase 3, balanced-randomized, double-blind, placebo-controlled, parallel-group clinical study. Newly diagnosed patients (N = 457, aged 16-45 years) were randomized to subcutaneous injections of DiaPep277 or placebo quarterly for 2 years. The primary efficacy end point was the change from baseline in the area under the glucagon-stimulated C-peptide curve. Secondary end points were the change from baseline in mixed-meal stimulated C-peptide secretion and in fasting C-peptide and achieving target HbA1c ≤7% (≤53 mmol/mol). Partial remission (target HbA1c on insulin ≤0.5 units/kg/day) and hypoglycemic event rate were exploratory end points. RESULTS DiaPep277 was safe and well tolerated. Significant preservation of C-peptide secretion was observed in the DiaPep277-treated group compared with the placebo (relative treatment effects of 23.4%, P = 0.037, and 29.2%, P = 0.011, in the modified intent-to-treat [mITT] and per-protocol [PP] populations, respectively). The mixed-meal stimulation failed to distinguish between the groups. There was a trend toward efficacy in fasting C-peptide levels, though not statistically significant. Significantly more DiaPep277-treated than placebo-treated patients maintained target HbA1c (mITT 56% versus 44%, P = 0.03; PP 60% versus 45%, P = 0.0082) and entered partial remission (mITT 38% versus 29%, P = 0.08; PP 42% versus 30%, P = 0.035). DiaPep277 treatment reduced the relative hypoglycemic event risk (mITT by 20%; PP by 28%). CONCLUSIONS DiaPep277 safely contributes to preservation of β-cell function and to improved glycemic control in patients with type 1 diabetes.
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DiaPep277® and immune intervention for treatment of type 1 diabetes. Clin Immunol 2013; 149:307-16. [DOI: 10.1016/j.clim.2013.09.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 09/01/2013] [Accepted: 09/03/2013] [Indexed: 11/24/2022]
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Van Crombruggen K, Jacob F, Zhang N, Bachert C. Damage-associated molecular patterns and their receptors in upper airway pathologies. Cell Mol Life Sci 2013; 70:4307-21. [PMID: 23673984 PMCID: PMC11113492 DOI: 10.1007/s00018-013-1356-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Revised: 04/23/2013] [Accepted: 04/29/2013] [Indexed: 12/17/2022]
Abstract
Inflammation of the nasal (rhinitis) and sinus mucosa (sinusitis) are prevalent medical conditions of the upper airways that are concurrent in many patients; hence the terminology "rhinosinusitis". The disease status is further defined to be "chronic" in case symptoms persist for more than 12 weeks without resolution. A diverse spectrum of external factors including viral and bacterial insults together with epithelial barrier malfunctions could be implicated in the chronicity of the inflammatory responses in chronic rhinosinusitis (CRS). However, despite massive research efforts in an attempt to unveil the pathophysiology, the exact reason for a lack of resolution still remains poorly understood. A novel set of molecules that could be implicated in sustaining the inflammatory reaction may be found within the host itself. Indeed, besides mediators of inflammation originating from outside, some endogenous intracellular and/or extracellular matrix (ECM) components from the host can be released into the extracellular space upon damage induced during the initial inflammatory reaction where they gain functions distinct from those during normal physiology. These "host-self" molecules are known to modulate inflammatory responses under pathological conditions, potentially preventing resolution and contributing to the development of chronic inflammation. These molecules are collectively classified as damage-associated molecular patterns (DAMPs). This review summarizes the current knowledge regarding DAMPs in upper airway pathologies, also covering those that were previously investigated for their intracellular and/or ECM functions often acting as an antimicrobial agent or implicated in tissue/cell homeostasis, and for which their function as a danger signaling molecule was not assessed. It is, however, of importance to assess these molecules again from a point of view as a DAMP in order to further unravel the pathogenesis of CRS.
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Affiliation(s)
- Koen Van Crombruggen
- Upper Airways Research Laboratory, Department of Otorhinolaryngology, Ghent University Hospital, De Pintelaan 185, 9000, Ghent, Belgium,
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Lambrecht S, Juchtmans N, Elewaut D. Heat-shock proteins in stromal joint tissues: innocent bystanders or disease-initiating proteins? Rheumatology (Oxford) 2013; 53:223-32. [DOI: 10.1093/rheumatology/ket277] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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Zanin-Zhorov A, Cohen IR. Signaling via TLR2 and TLR4 Directly Down-Regulates T Cell Effector Functions: The Regulatory Face of Danger Signals. Front Immunol 2013; 4:211. [PMID: 23898332 PMCID: PMC3722573 DOI: 10.3389/fimmu.2013.00211] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Accepted: 07/09/2013] [Indexed: 12/28/2022] Open
Abstract
Toll-like receptors (TLRs) are widely expressed and play an essential role in the activation of innate immune cells. However, certain TLRs are also expressed on T cells, and TLR ligands can directly modulate T cell functions. Here, we discuss findings indicating that T cells directly respond to Heat Shock Protein (HSP) 60, a self molecule, or to the HSP60-derived peptide, p277, via a TLR2-dependent mechanism. HSP60 has been considered to be a “danger signal” for the immune system because of its ability to induce pro-inflammatory phenotypes in innate immune cells – in this case via TLR4 activation; nevertheless, TLR2 engagement by HSP60 on T cells can lead to resolution of inflammation by up-regulating the suppression function of regulatory T cells and shifting the resulting cytokine secretion balance toward a Th2 phenotype. Moreover, T cell TLR4 engagement by LPS leads to up-regulation of suppressor of cytokine signaling 3 expression and consequently down-regulates T cell chemotaxis. Thus, TLR2 and TLR4 activation can contribute to both induction and termination of effector immune responses by controlling the activities of both innate and adaptive immune cells.
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Henderson B, Fares MA, Lund PA. Chaperonin 60: a paradoxical, evolutionarily conserved protein family with multiple moonlighting functions. Biol Rev Camb Philos Soc 2013; 88:955-87. [DOI: 10.1111/brv.12037] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Revised: 02/20/2013] [Accepted: 03/04/2013] [Indexed: 02/07/2023]
Affiliation(s)
- Brian Henderson
- Department of Microbial Diseases, UCL-Eastman Dental Institute; University College London; London WC1X 8LD U.K
| | - Mario A. Fares
- Department of Genetics; University of Dublin, Trinity College Dublin; Dublin 2 Ireland
- Department of Abiotic Stress; Instituto de Biologia Molecular y Celular de Plantas, Consejo Superior de Investigaciones Cientificas (CSIC-UPV); Valencia 46022 Spain
| | - Peter A. Lund
- School of Biosciences; University of Birmingham; Birmingham B15 2TT U.K
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Heat shock proteins and regulatory T cells. Autoimmune Dis 2013; 2013:813256. [PMID: 23573417 PMCID: PMC3612443 DOI: 10.1155/2013/813256] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Revised: 11/04/2012] [Accepted: 02/02/2013] [Indexed: 12/12/2022] Open
Abstract
Heat shock proteins (HSPs) are important molecules required for ideal protein function. Extensive research on the functional properties of HSPs indicates that HSPs may be implicated in a wide range of physiological functions including immune function. In the immune system, HSPs are involved in cell proliferation, differentiation, cytokine release, and apoptosis. Therefore, the ability of the immune system, in particular immune cells, to function optimally and in unison with other physiological systems is in part dependent on signaling transduction processes, including bidirectional communication with HSPs. Regulatory T cells (Tregs) are important T cells with suppressive functions and impairments in their function have been associated with a number of autoimmune disorders. The purpose of this paper is to examine the relationship between HSPs and Tregs. The interrelationship between cells and proteins may be important in cellular functions necessary for cell survival and expansion during diseased state.
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Kaczanowska S, Joseph AM, Davila E. TLR agonists: our best frenemy in cancer immunotherapy. J Leukoc Biol 2013; 93:847-63. [PMID: 23475577 DOI: 10.1189/jlb.1012501] [Citation(s) in RCA: 240] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Various TLR agonists are currently under investigation in clinical trials for their ability to orchestrate antitumor immunity. The antitumor responses are largely attributed to their aptitude to stimulate APCs such as DCs which in turn, activate tumor-specific T cell responses. However, there is a potential for TLR signaling to occur on cells other than professional APCs that could negate antitumor responses or even worse, promote tumor growth. The impetus for this review is twofold. First, there is accumulating data demonstrating that the engagement of TLRs on different T cell subsets and different cancer types could promote tumor growth or conversely, contribute to antitumor responses. Second, the efficacy of TLR agonists as monotherapies to treat cancer patients has been limited. In this review, we discuss how TLR signaling within different T cell subsets and cancer cells can potentially impact the generation of antitumor responses. Based on evidence from preclinical models and clinical trials, we draw attention to several criteria that we believe must be considered when selecting TLR agonists for developing effective immunotherapeutic strategies against cancer.
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Affiliation(s)
- Sabina Kaczanowska
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD 21201-1559, USA
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Zonneveld-Huijssoon E, Albani S, Prakken BJ, van Wijk F. Heat shock protein bystander antigens for peptide immunotherapy in autoimmune disease. Clin Exp Immunol 2013. [PMID: 23199319 DOI: 10.1111/j.1365-2249.2012.04627.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Mucosal administration of an antigen eliciting bystander suppression at the site of inflammation results in effective antigen-specific immunotherapy for autoimmune diseases. Heat shock proteins are bystander antigens that are effective in peptide-specific immunotherapy in both experimental and human autoimmune disease. The efficacy of preventive peptide immunotherapy is increased by enhancing peptide-specific immune responses with proinflammatory agents. Combining peptide-specific immunotherapy with general suppression of inflammation may improve its therapeutic effect.
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Affiliation(s)
- E Zonneveld-Huijssoon
- Department of Pediatric Immunology, Centre for Cellular and Molecular Intervention, University Medical Centre Utrecht, Utrecht, the Netherlands
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Vaughan K, Peters B, Mallone R, von Herrath M, Roep BO, Sette A. Navigating diabetes-related immune epitope data: resources and tools provided by the Immune Epitope Database (IEDB). Immunome Res 2013; 9. [PMID: 25140192 PMCID: PMC4134942 DOI: 10.4172/1745-7580.1000063] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Background The Immune Epitope Database (IEDB), originally focused on infectious diseases, was recently expanded to allergy, transplantation and autoimmunity diseases. Here we focus on diabetes, chosen as a prototype autoimmune disease. We utilize a combined tutorial and meta-analysis format, which demonstrates how common questions, related to diabetes epitopes can be answered. Results A total of 409 references are captured in the IEDB describing >2,500 epitopes from diabetes associated antigens. The vast majority of data were derived from GAD, insulin, IA-2/PTPRN, IGRP, ZnT8, HSP, and ICA-1, and the experiments related to T cell epitopes and MHC binding far outnumbers B cell assays. We illustrate how to search by specific antigens, epitopes or host. Other examples include searching for tetramers or epitopes restricted by specific alleles or assays of interest, or searching based on the clinical status of the host. Conclusions The inventory of all published diabetes epitope data facilitates its access for the scientific community. While the global collection of primary data from the literature reflects potential investigational biases present in the literature, the flexible search approach allows users to perform queries tailored to their preferences, including or excluding data as appropriate. Moreover, the analysis highlights knowledge gaps and identifies areas for future investigation.
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Affiliation(s)
- Kerrie Vaughan
- Vaccine Discovery, La Jolla Institute for Allergy and Immunology, La Jolla, CA
| | - Bjoern Peters
- Vaccine Discovery, La Jolla Institute for Allergy and Immunology, La Jolla, CA
| | - Roberto Mallone
- INSERM, U1016, Cochin Institute, DeAR Lab Avenir, Saint Vincent de Paul Hospital, 82 Avenue Denfert Rochereau, 75674 Paris Cedex 14, France
| | - Matthias von Herrath
- Developmental Immunology, La Jolla Institute for Allergy and Immunology, La Jolla, CA
| | - Bart O Roep
- Department for Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, Netherlands
| | - Alessandro Sette
- Vaccine Discovery, La Jolla Institute for Allergy and Immunology, La Jolla, CA
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Wachstein J, Tischer S, Figueiredo C, Limbourg A, Falk C, Immenschuh S, Blasczyk R, Eiz-Vesper B. HSP70 enhances immunosuppressive function of CD4(+)CD25(+)FoxP3(+) T regulatory cells and cytotoxicity in CD4(+)CD25(-) T cells. PLoS One 2012; 7:e51747. [PMID: 23300563 PMCID: PMC3530531 DOI: 10.1371/journal.pone.0051747] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Accepted: 11/05/2012] [Indexed: 11/19/2022] Open
Abstract
Human CD4+CD25+FoxP3+ T regulatory cells (Tregs) control effector T cells and play a central role in peripheral tolerance and immune homeostasis. Heat shock protein 70 (HSP70) is a major immunomodulatory molecule, but its effect on the functions of Tregs is not well understood. To investigate target-dependent and –independent Treg functions, we studied cytokine expression, regulation of proliferation and cytotoxicity after exposure of Tregs to HSP70. HSP70-treated Tregs significantly inhibited proliferation of CD4+CD25− target cells and downregulated the secretion of the proinflammatory cytokines IFN-γ and TNF-α. By contrast, HSP70 increased the secretion of Treg suppressor cytokines IL-10 and TGF-β. Treatment with HSP70 enhanced the cytotoxic properties of Tregs only to a minor extent (4-fold), but led to stronger responses in CD4+CD25− cells (42-fold). HSP70-induced modulation of T-cell responses was further enhanced by combined treatment with HSP70 plus IL-2. Treatment of Tregs with HSP70 led to phosphorylation of PI3K/AKT and the MAPKs JNK and p38, but not that of ERK1/2. Exposure of Tregs to specific inhibitors of PI3K/AKT and the MAPKs JNK and p38 reduced the immunosuppressive function of HSP70-treated Tregs as indicated by the modified secretion of specific target cell (IFN-γ, TNF-α) and suppressor cytokines (IL-10, TGF-β). Taken together, the data show that HSP70 enhances the suppressive capacity of Tregs to neutralize target immune cells. Thus HSP70-enhanced suppression of Tregs may prevent exaggerated immune responses and may play a major role in maintaining immune homeostasis.
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Affiliation(s)
- Julian Wachstein
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany
| | - Sabine Tischer
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany
| | - Constanca Figueiredo
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany
- Integrated Research and Treatment Center (IFB-Tx), Hannover Medical School, Hannover, Germany
| | - Anne Limbourg
- Integrated Research and Treatment Center (IFB-Tx), Hannover Medical School, Hannover, Germany
- Department of Plastic, Hand and Reconstructive Surgery, Hannover Medical School, Hannover, Germany
| | - Christine Falk
- Integrated Research and Treatment Center (IFB-Tx), Hannover Medical School, Hannover, Germany
- Institute for Transplant Immunology, Hannover Medical School, Hannover, Germany
| | - Stephan Immenschuh
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany
| | - Rainer Blasczyk
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany
- Integrated Research and Treatment Center (IFB-Tx), Hannover Medical School, Hannover, Germany
| | - Britta Eiz-Vesper
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany
- Integrated Research and Treatment Center (IFB-Tx), Hannover Medical School, Hannover, Germany
- * E-mail:
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50
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Chapman NM, Bilal MY, Cruz-Orcutt N, Knudson C, Madinaveitia S, Light J, Houtman JCD. Distinct signaling pathways regulate TLR2 co-stimulatory function in human T cells. Cell Signal 2012; 25:639-50. [PMID: 23219913 DOI: 10.1016/j.cellsig.2012.11.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Revised: 11/28/2012] [Accepted: 11/29/2012] [Indexed: 10/27/2022]
Abstract
Toll-like receptor 2 (TLR2) serves as a co-stimulatory receptor for human T cells by enhancing T cell receptor (TCR)-induced cytokine production and proliferation. However, it is unknown where signals from the TCR and TLR2 converge to enhance T cell activation. To address this gap, we examined changes in TCR-induced signaling following concurrent TLR2 activation in human T cells. Both proximal TCR-mediated signaling and early NFκB activation were not enhanced by TCR and TLR2 co-activation, potentially due to the association of TLR2 with TLR10. Instead, TLR2 co-induction did augment Akt and Erk1/Erk2 activation in human T cells. These findings demonstrate that TLR2 activates distinct signaling pathways in human T cells and suggest that alterations in expression of TLR2 co-receptors may contribute to aberrant T cell responses.
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Affiliation(s)
- Nicole M Chapman
- Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA 52242, USA
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