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Shen Y, You Q, Wu Y, Wu J. Inhibition of PAD4-mediated NET formation by cl-amidine prevents diabetes development in nonobese diabetic mice. Eur J Pharmacol 2022; 916:174623. [PMID: 34767782 DOI: 10.1016/j.ejphar.2021.174623] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 10/30/2021] [Accepted: 11/03/2021] [Indexed: 12/19/2022]
Abstract
Many evidences indicated that neutrophil extracellular traps (NETs) play pathogenic roles in type 1 diabetes (T1D). Peptidylarginine deiminases 4 (PAD4) has been proved to be indispensable for generation of NETs. In the current study, we investigated whether oral administration of cl-amidine, an effective inhibitor of PAD4, protects non-obese diabetic (NOD) mice from T1D development. Female NOD mice were orally administrated with cl-amidine (5 μg/g body weight) from the age of 8 weeks up to 16 weeks. It showed that cl-amidine inhibit NET formation in vitro and in vivo. The onset of T1D was delayed nearly 8 weeks and the incidence of disease was significantly decreased in cl-amidine treated mice compared with the control group. Moreover, cl-amidine decreased the serum levels of anti-citrullinated peptide antibody (ACPA) and anti-neutrophil cytoplasmic antibodies (ANCA) in NOD mice. Also, it decreased generation of T1D autoantibodies such as glutamic acid decarboxylase antibody (GADA), tyrosine phosphatase-related islet antigen-2 antibody (IA2A) and zinc transporter 8 antibody (ZnT8A), which were strongly correlated with the reduced serum PAD4 and MPO-DNA levels. Furthermore, cl-amidine administration inhibited pancreatic inflammation and increased frequency of regulatory T cells in pancreatic lymph nodes (PLNs). In addition, cl-amidine improved gut barrier dysfunction and decreased the serum level of lipopolysaccharide (LPS), which was positively correlated with the NETs markers (PAD4 and MPO-DNA) and T1D autoantibody IA2A. In conclusion, our data showed that orally delivery of cl-amidine effectively prevent T1D development and suggested inhibition of PAD4-dependent NET formation as a potential way of clinical treatment in T1D.
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MESH Headings
- Administration, Oral
- Animals
- Autoantibodies/blood
- Autoimmune Diseases/prevention & control
- Blood Glucose/drug effects
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/pathology
- Diabetes Mellitus, Experimental/prevention & control
- Diabetes Mellitus, Type 1/metabolism
- Diabetes Mellitus, Type 1/pathology
- Diabetes Mellitus, Type 1/prevention & control
- Extracellular Traps/drug effects
- Female
- Inflammation/prevention & control
- Intestines/drug effects
- Mice, Inbred NOD
- Ornithine/administration & dosage
- Ornithine/analogs & derivatives
- Ornithine/pharmacology
- Protective Agents/administration & dosage
- Protective Agents/pharmacology
- Protein-Arginine Deiminase Type 4/antagonists & inhibitors
- Protein-Arginine Deiminase Type 4/blood
- Protein-Arginine Deiminase Type 4/metabolism
- T-Lymphocytes, Regulatory/drug effects
- T-Lymphocytes, Regulatory/metabolism
- Tight Junctions/drug effects
- Mice
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Affiliation(s)
- Yiming Shen
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Qi You
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Yiling Wu
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Jie Wu
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China.
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2
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Mölzer C, Heissigerova J, Wilson HM, Kuffova L, Forrester JV. Immune Privilege: The Microbiome and Uveitis. Front Immunol 2021; 11:608377. [PMID: 33569055 PMCID: PMC7868421 DOI: 10.3389/fimmu.2020.608377] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 12/04/2020] [Indexed: 02/03/2023] Open
Abstract
Immune privilege (IP), a term introduced to explain the unpredicted acceptance of allogeneic grafts by the eye and the brain, is considered a unique property of these tissues. However, immune responses are modified by the tissue in which they occur, most of which possess IP to some degree. The eye therefore displays a spectrum of IP because it comprises several tissues. IP as originally conceived can only apply to the retina as it contains few tissue-resident bone-marrow derived myeloid cells and is immunologically shielded by a sophisticated barrier – an inner vascular and an outer epithelial barrier at the retinal pigment epithelium. The vascular barrier comprises the vascular endothelium and the glia limitans. Immune cells do not cross the blood-retinal barrier (BRB) despite two-way transport of interstitial fluid, governed by tissue oncotic pressure. The BRB, and the blood-brain barrier (BBB) mature in the neonatal period under signals from the expanding microbiome and by 18 months are fully established. However, the adult eye is susceptible to intraocular inflammation (uveitis; frequency ~200/100,000 population). Uveitis involving the retinal parenchyma (posterior uveitis, PU) breaches IP, while IP is essentially irrelevant in inflammation involving the ocular chambers, uveal tract and ocular coats (anterior/intermediate uveitis/sclerouveitis, AU). Infections cause ~50% cases of AU and PU but infection may also underlie the pathogenesis of immune-mediated “non-infectious” uveitis. Dysbiosis accompanies the commonest form, HLA-B27–associated AU, while latent infections underlie BRB breakdown in PU. This review considers the pathogenesis of uveitis in the context of IP, infection, environment, and the microbiome.
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Affiliation(s)
- Christine Mölzer
- Institute of Medical Sciences, University of Aberdeen, Aberdeen, United Kingdom
| | - Jarmila Heissigerova
- Department of Ophthalmology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czechia
| | - Heather M Wilson
- Institute of Medical Sciences, University of Aberdeen, Aberdeen, United Kingdom
| | - Lucia Kuffova
- Institute of Medical Sciences, University of Aberdeen, Aberdeen, United Kingdom.,Eye Clinic, Aberdeen Royal Infirmary, Aberdeen, United Kingdom
| | - John V Forrester
- Institute of Medical Sciences, University of Aberdeen, Aberdeen, United Kingdom
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3
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Thanner J, Bekos C, Veraar C, Janik S, Laggner M, Boehm PM, Schiefer AI, Müllauer L, Klepetko W, Ankersmit HJ, Moser B. Heat shock protein 90α in thymic epithelial tumors and non-thymomatous myasthenia gravis. Oncoimmunology 2020; 9:1756130. [PMID: 32923112 PMCID: PMC7458630 DOI: 10.1080/2162402x.2020.1756130] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Background Thymic epithelial tumors (TETs) are rare malignancies with unique association to the autoimmune disease myasthenia gravis (MG). Heat shock proteins (HSPs) harbor great potential as cancer biomarkers and HSP inhibitors approach clinical cancer therapy. Methods To explore HSP pathophysiology, we assessed sera (immunoassays) and tissues (immunohistochemistry) of TETs (and thymic tissues) for HSP27, phosphorylated (p)HSP27, HSP70 and HSP90α expression in 114 TETs and 26 non-thymomatous MG patients undergoing extended thymectomy. Results Serum concentrations of HSP90α were significantly increased in patients with thymic carcinomas, thymomas, thymic neuroendocrine tumors and non-thymomatous MG compared to patients who underwent thymectomy revealing regular thymic morphology or controls. In thymoma patients, high serum HSP90α represented a significantly worse prognostic factor for free-from-recurrence, and complete tumor resection led to decreased levels. The expression of HSP90 in nuclei and cytoplasm of tumor cells and non-neoplastic lymphocytes varied with WHO histological subtype. HSP90 was expressed in centroblasts of thymic germinal centers in MG patients. Higher pHSP27 serum concentrations were observed in seropositive MG and those not treated with steroids. Conclusions HSP data suggest high potential for HSPs as TET cancer biomarkers or as candidates for targeted therapy. Caution is warranted in TET patients with associated MG overexpressing HSPs.
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Affiliation(s)
- Jürgen Thanner
- Division of Thoracic Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria
| | - Christine Bekos
- Division of Thoracic Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria.,Department of General Gynecology and Gynecologic Oncology, Medical University of Vienna, Vienna, Austria
| | - Cecilia Veraar
- Department of Anaesthesiology, General Intensive Care and Pain Medicine, Division of Cardiac Thoracic Vascular Anaesthesia and Intensive Care Medicine, Medical University of Vienna, Vienna, Austria
| | - Stefan Janik
- Department of Otorhinolaryngology, Head and Neck Surgery, Medical University of Vienna, Vienna, Austria
| | - Maria Laggner
- Division of Thoracic Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria
| | - Panja M Boehm
- Division of Thoracic Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria
| | - Ana-Iris Schiefer
- Department of Pathology, Medical University of Vienna, Vienna, Austria
| | - Leonhard Müllauer
- Department of Anaesthesiology, General Intensive Care and Pain Medicine, Division of Cardiac Thoracic Vascular Anaesthesia and Intensive Care Medicine, Medical University of Vienna, Vienna, Austria
| | - Walter Klepetko
- Division of Thoracic Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria
| | - Hendrik Jan Ankersmit
- Division of Thoracic Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria.,Head FFG Project "APOSEC", FOLAB Surgery, Medical University of Vienna, Vienna, Austria
| | - Bernhard Moser
- Division of Thoracic Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria
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Charles J, Castellino FJ, Ploplis VA. Past and Present Behçet's Disease Animal Models. Curr Drug Targets 2020; 21:1652-1663. [PMID: 32682369 PMCID: PMC7746599 DOI: 10.2174/1389450121666200719010425] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 06/23/2020] [Accepted: 06/29/2020] [Indexed: 12/12/2022]
Abstract
Behçet's disease (BD) is presumably an autoinflammatory disease of unknown etiology for which several animal models have been described over the years. Agents and methods used for the development of these models have ranged from the herpes simplex type one virus (hsv-1) pathogen to the use of transgenic mice. Other models have also been used to investigate a possible autoimmune component. Each model possesses its own unique set of benefits and shortcomings, with no one model fully being able to recapitulate the disease phenotype. Here, we review the proposed models and provide commentary on their effectiveness and usefulness in studying the disease.
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Affiliation(s)
- Jermilia Charles
- W.M. Keck Center for Transgene Research, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Francis J. Castellino
- W.M. Keck Center for Transgene Research, University of Notre Dame, Notre Dame, IN 46556, USA
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Victoria A. Ploplis
- W.M. Keck Center for Transgene Research, University of Notre Dame, Notre Dame, IN 46556, USA
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
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5
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In silico Analysis of Different Signal Peptides for the Excretory Production of Recombinant NS3-GP96 Fusion Protein in Escherichia coli. Int J Pept Res Ther 2018. [DOI: 10.1007/s10989-018-9775-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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6
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Darvishi F, Zarei A, Madzak C. In silico and in vivo analysis of signal peptides effect on recombinant glucose oxidase production in nonconventional yeast Yarrowia lipolytica. World J Microbiol Biotechnol 2018; 34:128. [PMID: 30083963 DOI: 10.1007/s11274-018-2512-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Accepted: 07/31/2018] [Indexed: 11/26/2022]
Abstract
Signal peptide (SP) is an important factor and biobrick in the production and secretion of recombinant proteins. The aim of this study was in silico and in vivo analysis of SPs effect on the production of recombinant glucose oxidase (GOX) in Yarrowia lipolytica. Several in silico softwares, namely SignalP4, Signal-CF, Phobius, WolfPsort 0.2, SOLpro and ProtParam, were used to analyse the potential of 15 endogenous and exogenous SPs for the secretion of recombinant GOX in Y. lipolytica. According to in silico results, the SP of GOX was predicted as suitable in terms of high secretory potential and of protein solubility and stability which is chosen for in vivo analysis. The recombinant Y. lipolytica strain produced 280 U/L of extracellular GOX after 7 days in YPD medium. The results show that the SP of GOX can be applied to efficient production of extracellular heterologous proteins and metabolic engineering in Y. lipolytica.
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Affiliation(s)
- Farshad Darvishi
- Microbial Biotechnology and Bioprocess Engineering (MBBE) Group, Department of Microbiology, Faculty of Science, University of Maragheh, Maragheh, 55181-83111, Iran.
| | - Amin Zarei
- Microbial Biotechnology and Bioprocess Engineering (MBBE) Group, Department of Microbiology, Faculty of Science, University of Maragheh, Maragheh, 55181-83111, Iran
| | - Catherine Madzak
- UMR GMPA, AgroParisTech, INRA, Université Paris-Saclay, Thiverval-Grignon, France
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7
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Optimization of Human Serum Albumin Periplasmic Localization in Escherichia coli Using In Silico Evaluation of Different Signal Peptides. Int J Pept Res Ther 2018. [DOI: 10.1007/s10989-018-9709-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Tan S, Chi Q, Liu T, Sun Z, Min Y, Zhang Z, Li S. Alleviation Mechanisms of Selenium on Cadmium-Spiked Neutrophil Injury to Chicken. Biol Trace Elem Res 2017; 178:301-309. [PMID: 28064415 DOI: 10.1007/s12011-016-0924-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 12/25/2016] [Indexed: 01/10/2023]
Abstract
To determine the negative effects of cadmium (Cd) exposure and the protective role of selenium (Se) on Cd-spiked neutrophils of chicken, forty-eight 28-day-old Isa Brown male chickens were divided randomly into four groups. Group I (control group) was fed with the basic diet containing 0.2 mg/kg Se. Group II (Se-treated group) was fed with the basic diet supplemented with Na2SeO3, and the total Se content was 2 mg/kg. Group III (Se/Cd-treated group) was fed with the basic diet supplemented with Na2SeO3; the total Se content was 2 mg/kg and supplemented with 150 mg/kg CdCl2. Group IV (Cd-treated group) was fed with the basic diet supplemented with 150 mg/kg CdCl2. Analyses of inflammatory factors, cytokines, and heat shock protein (Hsp) messenger RNA (mRNA) expression were detected by real-time PCR (RT-PCR). Additionally, we evaluated the phagocytic rate of neutrophils in peripheral blood. First, we observed that Cd significantly induced the mRNA expression levels of inflammatory factors NF-κB, iNOS, COX-2, and TNF-α, while Se/Cd treatment reduced their mRNA expression, although these expression levels remained higher than that of the control group. In addition, the mRNA expression levels of cytokines (IL-2, IL-4, and IL-10) for the Se-treated group exhibited significant differences between the Se/Cd-treated group and the Cd-treated group. Furthermore, the mRNA expression levels of Hsps demonstrated that the Se/Cd-treated group and the Cd-treated group were significantly higher (P < 0.05) than the control group and the Se-treated group. These results demonstrated that Se presented partial protection on Cd-spiked neutrophils of chicken with Hsps being involved in the process of the Cd-spiked toxic effects in chicken peripheral blood neutrophils.
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Affiliation(s)
- Siran Tan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Qianru Chi
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Tianqi Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Zhepeng Sun
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Yahong Min
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Ziwei Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
| | - Shu Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
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9
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Doino M, Yokoyama M, Sasaki Y, Kondo K, Yasuda Y, Arakawa S. Evaluation of the relationship between salivary concentration of anti-heat shock protein immunoglobulin and clinical manifestations of Behçet's disease. Scand J Rheumatol 2017; 46:381-387. [PMID: 28276957 DOI: 10.1080/03009742.2016.1249942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVE This study investigated the relationship between the concentration of anti-heat shock protein (HSP) 60 antibody in resting saliva and the severity of Behçet's disease (BD). METHOD Sixty-five patients diagnosed with BD at Tokyo Medical and Dental University Hospital were enrolled in this study. Based on clinical severity scores, patients were categorized as having mild, moderate, or severe BD. Periodontal status was evaluated with the Community Periodontal Index (CPI), and anti-HSP60 antibody concentrations in resting saliva were measured with an enzyme-linked immunosorbent assay. RESULTS The mean antibody concentration in patients in the moderate group was significantly higher than concentrations in the mild and severe groups. No significant difference was found between the mild and severe groups. Gingival inflammation, identified with the CPI, was associated with a higher antibody concentration. The antibody concentration in patients who had stomatitis for more than 2 weeks was significantly higher than in those with stomatitis for less than 2 weeks. The antibody concentration in patients who had taken colchicine was significantly lower than that in subjects who had not. CONCLUSION These results suggest that the concentration of anti-HSP60 antibody in resting saliva may be effective as a non-invasive indicator for the diagnosis (screening) and prognostication of BD.
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Affiliation(s)
- M Doino
- a Department of Lifetime Oral Health Care Science, Graduate School , Tokyo Medical and Dental University , Tokyo , Japan
| | - M Yokoyama
- b Department of Biochemistry, Graduate School , Tokyo Medical and Dental University , Tokyo , Japan
| | - Y Sasaki
- c Research and Industry-University Alliance , Tokyo Medical and Dental University , Tokyo , Japan
| | - K Kondo
- a Department of Lifetime Oral Health Care Science, Graduate School , Tokyo Medical and Dental University , Tokyo , Japan
| | - Y Yasuda
- a Department of Lifetime Oral Health Care Science, Graduate School , Tokyo Medical and Dental University , Tokyo , Japan
| | - S Arakawa
- a Department of Lifetime Oral Health Care Science, Graduate School , Tokyo Medical and Dental University , Tokyo , Japan
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10
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Irajie C, Mohkam M, Nezafat N, Hosseinzadeh S, Aminlari M, Ghasemi Y. In Silico Analysis of Glutaminase from Different Species of Escherichia and Bacillus. IRANIAN JOURNAL OF MEDICAL SCIENCES 2016; 41:406-14. [PMID: 27582590 PMCID: PMC4967485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
BACKGROUND Glutaminase (EC 3.5.1.2) catalyzes the hydrolytic degradation of L-glutamine to L-glutamic acid and has been introduced for cancer therapy in recent years. The present study was an in silico analysis of glutaminase to further elucidate its structure and physicochemical properties. METHODS Forty glutaminase protein sequences from different species of Escherichia and Bacillus obtained from the UniProt Protein Database were characterized for homology search, physiochemical properties, phylogenetic tree construction, motif, superfamily search, and multiple sequence alignment. RESULTS The sequence level homology was obtained among different groups of glutaminase enzymes, which belonged to superfamily serine-dependent β-lactamases and penicillin-binding proteins. The phylogenetic tree constructed indicated 2 main clusters for the glutaminases. The distribution of common β-lactamase motifs was also observed; however, various non-common motifs were also observed. CONCLUSION Our results showed that the existence of a conserved motif with a signature amino-acid sequence of β-lactamases could be considered for the genetic engineering of glutaminases in view of their potential application in cancer therapy. Nonetheless, further research is needed to improve the stability of glutaminases and decrease their immunogenicity in both medical and food industrial applications.
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Affiliation(s)
- Cambyz Irajie
- Department of Public Health and Food Hygiene, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - Milad Mohkam
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran,Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Navid Nezafat
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Saeed Hosseinzadeh
- Department of Public Health and Food Hygiene, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - Mahmood Aminlari
- Department of Biochemistry, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - Younes Ghasemi
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran,Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran,Department of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran,Correspondence: Younes Ghasemi, PhD, PharmD; Department of Pharmaceutical Biotechnology, School of Pharmacy, P.O. Box: 71468-64685, Shiraz, Iran Tel/Fax: +98 71 32426729
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11
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Bioinformatics evaluation of the possibility of heat shock proteins as autoantigens in multiple sclerosis based on molecular mimicry hypothesis. J Neuroimmunol 2016; 295-296:100-21. [PMID: 27235356 DOI: 10.1016/j.jneuroim.2016.03.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 03/19/2016] [Accepted: 03/29/2016] [Indexed: 01/22/2023]
Abstract
Molecular mimicry is the explanatory link between the heat shock proteins (HSPs) of infectious agents and triggering multiple sclerosis. Considering that there are many similarities between self- and bacterial-HSPs, the goal was to investigate a panel of 60- and 70kDa HSPs from a variety of bacteria in order to predict the role of each microorganism in triggering or progression of the disease under the molecular mimicry hypothesis. By clarifying the peptides meeting criteria for cross-reactivity and elucidating the role of each microorganism in MS pathogenesis, it would be easier to suggest more effective treatment and preventive strategies for this disease.
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12
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HnRNP A1 is Involved in Deep Vein Thrombosis Patients with Behçet's Disease. EBioMedicine 2016; 6:215-221. [PMID: 27211563 PMCID: PMC4856785 DOI: 10.1016/j.ebiom.2016.03.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Revised: 03/03/2016] [Accepted: 03/05/2016] [Indexed: 11/23/2022] Open
Abstract
Objective The aim of this study was to verify the hypothesis originated from bioinformatics and literature reviews that hnNRP A1 may be a new immune target of Behçet's disease (BD). Methods First, bioinformatics was used to show the correlation between hnRNP A1 and A2/B1 in amino acid sequences and three dimensional structures. Second, hnRNP A1 was expressed, purified, and immunologically confirmed by systematic immunology methods including: Western blotting, immunoprecipitation and Dot-ELISA. Then, ELISA was used to screen the anti-hnRNP A1 autoantibodies in newly confirmed clinical samples and the clinical significance was compared between anti-hnRNP A1 antibody positive and negative groups. Finally, the endothelial cells antigen profile of one anti-hnRNP A1 antibody positive BD patient was detected using immunoprecipitation with liquid chromatography tandem mass spectrometry (LC–TMS). Results In total 720 subjects enrolled and tested in this study. Our results demonstrated hnRNP A1 as a new immune target of BD. The reactivity of BD serum IgG antibodies against hnRNP A1 was significantly higher than healthy controls (P < 0.0001), and deep vein thrombosis (DVT) showed a significant higher in the anti-hnRNP A1 antibodies positive group (P < 0.05). Bioinformatics was used to predict that hnRNP A1 may play a role in BD. HnRNP A1 was immunologically confirmed as an autoantigen of BD. Deep vein thrombosis has a close relationship with anti-hnRNP A1 antibody in patients' blood circulation.
Behçet's disease (BD) is a chronic systemic autoimmune disease. The pathogenesis of BD is still not clear, and the diagnosis is based on typical clinical syndromes. Autoantigen identification was considered a key to solve this problem. This study was to verify the hypothesis suggested by bioinformatics that hnRNP A1 may be a new autoantigen of BD. Among the 720 subjects enrolled and systemic tested, our results demonstrated hnRNP A1 as a new autoantigen of BD, and associated with deep vein thrombosis.
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Rahmatabadi SS, Nezafat N, Negahdaripour M, Hajighahramani N, Morowvat MH, Ghasemi Y. Studying the features of 57 confirmed CRISPR loci in 29 strains of Escherichia coli. J Basic Microbiol 2016; 56:645-53. [PMID: 26871258 DOI: 10.1002/jobm.201500707] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Accepted: 01/17/2016] [Indexed: 12/26/2022]
Abstract
Clustered Regularly Interspaced Short Palindromic Repeats (CRISPRs) system is a novel type of innate defense system in prokaryotes for destruction of exogenous elements. To gain further insight into behavior and organization of the system, the extensive analysis of the available sequenced genomes is necessary. The dynamic nature of CRISPR loci is possibly valuable for typing and relative analyses of strains and microbial population. There are a few orderly bioinformatics investigations about the structure of CRISPR sequences in the Escherichia coli strains. In this study, 57 CRISPR loci were selected from 32 Escherichia coli strains to investigate their structural characteristics and potential functions using bioinformatics tools. Our results showed that most strains contained several loci that mainly included conserved direct repeats, while the spacers were highly variable. Moreover, RNA analysis of the sequences indicated that all loci could form stable RNA secondary structures and showed homology mostly with phages compared to plasmids. Only three strains included cas genes around their loci.
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Affiliation(s)
- Seyyed Soheil Rahmatabadi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran.,Pharmaceutical Science Research Center, Shiraz University of Medical Science, Shiraz, Iran
| | - Navid Nezafat
- Pharmaceutical Science Research Center, Shiraz University of Medical Science, Shiraz, Iran
| | - Manica Negahdaripour
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran.,Pharmaceutical Science Research Center, Shiraz University of Medical Science, Shiraz, Iran
| | - Nasim Hajighahramani
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran.,Pharmaceutical Science Research Center, Shiraz University of Medical Science, Shiraz, Iran
| | | | - Younes Ghasemi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran.,Pharmaceutical Science Research Center, Shiraz University of Medical Science, Shiraz, Iran.,Department of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
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14
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In Silico Sub-unit Hexavalent Peptide Vaccine Against an Staphylococcus aureus Biofilm-Related Infection. Int J Pept Res Ther 2015. [DOI: 10.1007/s10989-015-9489-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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15
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Zamani M, Nezafat N, Negahdaripour M, Dabbagh F, Ghasemi Y. In Silico Evaluation of Different Signal Peptides for the Secretory Production of Human Growth Hormone in E. coli. Int J Pept Res Ther 2015. [DOI: 10.1007/s10989-015-9454-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Guarneri F, Cannavò SP, Minciullo PL, Gangemi S. Pityriasis rosea of Gibert: immunological aspects. J Eur Acad Dermatol Venereol 2014; 29:21-5. [PMID: 25200809 DOI: 10.1111/jdv.12701] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2014] [Accepted: 07/17/2014] [Indexed: 01/22/2023]
Abstract
More than 200 years after first description and 150 years after complete definition by Gibert, pityriasis rosea (PR) is still a clinical entity with many obscure aspects. Although great interest was focused on aetiology, studies on immunological mechanisms associated with this disease were rather discontinuous. We present a review of the literature on immunological features of PR, aimed to outline a unified picture of currently available knowledge in this field and create a useful starting point for future research.
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Affiliation(s)
- F Guarneri
- Dermatology, Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
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An LH, Lei K, Zheng BH. Use of heat shock protein mRNA expressions as biomarkers in wild crucian carp for monitoring water quality. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2014; 37:248-255. [PMID: 24370851 DOI: 10.1016/j.etap.2013.11.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Accepted: 11/21/2013] [Indexed: 06/03/2023]
Abstract
In organisms, the production of heat shock proteins (HSPs) can be induced after exposure to various stressors. In the present study, partial cDNA sequences encoding of HSP30, HSP60, HSP70, and HSP90 genes were isolated and sequenced in the crucian carp (Carassius carassius). Next, quantitative real-time reverse transcription PCR (qRT-PCR) assays normalized to beta-actin were developed to quantify HSP mRNA expression. The same methods were used to detect HSP mRNA expression in the wild crucian carp that were collected from the Hun River. In fish located downstream of the river, we found that the levels of HSP70 and HSP30 in the liver and kidney were higher than fish located upstream, and these differences coincided with changes of the water quality. These results suggest that kidney HSP30 and liver HSP70 expression can serve as sensitive biomarkers for the presence of field environmental stressors in wild crucian carp.
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Affiliation(s)
- Li-hui An
- State Environmental Protection Key Laboratory of Estuarine and Coastal Research, Chinese Research Academy for Environment Sciences, Beijing 100012, China
| | - Kun Lei
- State Environmental Protection Key Laboratory of Estuarine and Coastal Research, Chinese Research Academy for Environment Sciences, Beijing 100012, China
| | - Bing-hui Zheng
- State Environmental Protection Key Laboratory of Estuarine and Coastal Research, Chinese Research Academy for Environment Sciences, Beijing 100012, China.
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Innate and Adaptive Responses to Heat Shock Proteins in Behcet's Disease. GENETICS RESEARCH INTERNATIONAL 2013; 2013:249157. [PMID: 24490075 PMCID: PMC3893747 DOI: 10.1155/2013/249157] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 11/11/2013] [Indexed: 12/24/2022]
Abstract
Behcet's disease (BD) is a systemic, chronic inflammatory disorder with both innate and adaptive immune responses. Heat shock proteins (HSP) are highly conserved molecules in different species with scavenger activity and involved in correct folding of newly synthesized proteins. T and B cell responses against HSPs are observed in BD patients in both αβ and γδ T-cell populations. 60-kD HSP (HSP60) is also shown to be recognized by pattern recognition receptors such as toll-like receptors (TLR) and is suggested to be an endogenous "danger" signal to the immune system with rapid inflammatory cytokine releases and enhancement of adaptive Th1-type responses. Elucidating the exact role of HSPs in BD pathogenesis might pave the way to less toxic therapeutic approaches to BD, such as antibacterial therapies and immunomodulation.
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Guarneri F, Guarneri C. Molecular mimicry in cutaneous autoimmune diseases. World J Dermatol 2013; 2:36-43. [DOI: 10.5314/wjd.v2.i4.36] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Accepted: 09/17/2013] [Indexed: 02/06/2023] Open
Abstract
The emulation of characteristics of a different organism to gain biological advantage is a common phenomenon in nature, described and defined with the term “mimicry” in the second half of the 19th century. In the last decades, mimicry at molecular level has been evidenced as a method used by several pathogen microrganisms to control metabolic functions of infected cells and elude host’s immune system. Because of molecular mimicry, immune reactions against microbial molecules can turn against the mimicked self-molecules in predisposed subjects, leading to autoimmunity. This pathogenic mechanism, which gives a possible explanation for the specific epidemiological and chronological association between some infections and some autoimmune diseases, is well known and verified in many fields of medicine, but not adequately studied in dermatology: experimental data are available only for leprosy, atopic dermatitis, Behçet’s disease, Vogt-Koyanagi-Harada syndrome and systemic erythematous lupus, while for few other diseases its role is hypothetical or suggested on the basis of single, small experiments or anecdotal reports. An overview of available data and hypotheses about the role of molecular mimicry in autoimmune cutaneous diseases is presented here, together with the perspectives offered by the use of bioinformatics and the personal experience of the author in this field.
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Vural B, Sehitoğlu E, Cavuş F, Yalçınkaya N, Haytural H, Küçükerden M, Ulusoy C, Uğurel E, Turan S, Bulut L, Türkoğlu R, Shugaiv E, Kürtüncü M, Atakan S, Güre AO, Gül A, Eraksoy M, Akman-Demir G, Tüzün E. Mitochondrial carrier homolog 1 (Mtch1) antibodies in neuro-Behçet's disease. J Neuroimmunol 2013; 263:139-44. [PMID: 24035008 DOI: 10.1016/j.jneuroim.2013.08.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 08/03/2013] [Accepted: 08/14/2013] [Indexed: 11/18/2022]
Abstract
Efforts for the identification of diagnostic autoantibodies for neuro-Behcet's disease (NBD) have failed. Screening of NBD patients' sera with protein macroarray identified mitochondrial carrier homolog 1 (Mtch1), an apoptosis-related protein, as a potential autoantigen. ELISA studies showed serum Mtch1 antibodies in 68 of 144 BD patients with or without neurological involvement and in 4 of 168 controls corresponding to a sensitivity of 47.2% and specificity of 97.6%. Mtch1 antibody positive NBD patients had more attacks, increased disability and lower serum nucleosome levels. Mtch1 antibody might be involved in pathogenic mechanisms of NBD rather than being a coincidental byproduct of autoinflammation.
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Affiliation(s)
- Burçak Vural
- Department of Genetics, Institute for Experimental Medicine, Istanbul University, Istanbul, Turkey
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