Results in immunology最新文献

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Transcriptome analysis of neoplastic hemocytes in soft-shell clams Mya arenaria: Focus on cell cycle molecular mechanism 软壳蛤肿瘤血细胞转录组分析:聚焦于细胞周期分子机制
Results in immunology Pub Date : 2013-01-01 DOI: 10.1016/j.rinim.2013.10.001
Ahmed Siah , Patty McKenna , Franck C.J. Berthe , Luis O.B. Afonso , Jean-Michel Danger
{"title":"Transcriptome analysis of neoplastic hemocytes in soft-shell clams Mya arenaria: Focus on cell cycle molecular mechanism","authors":"Ahmed Siah ,&nbsp;Patty McKenna ,&nbsp;Franck C.J. Berthe ,&nbsp;Luis O.B. Afonso ,&nbsp;Jean-Michel Danger","doi":"10.1016/j.rinim.2013.10.001","DOIUrl":"10.1016/j.rinim.2013.10.001","url":null,"abstract":"<div><p>In North America, a high mortality of soft-shell clams <em>Mya arenaria</em> was found to be related to the disease known as disseminated neoplasia (DN). Disseminated neoplasia is commonly recognized as a tetraploid disorder related to a disruption of the cell cycle. However, the molecular mechanisms by which hemocytes of clams are transformed in the course of DN remain by far unknown. This study aims at identifying the transcripts related to DN in soft shell clams’ hemocytes using next generation of sequencing (Illumina HiSeq2000). This study mainly focuses on transcripts and molecular mechanisms involved in cell cycle. Using Illumina next generation of sequencing, more than 95,399,159 reads count with an average length of 45  bp was generated from three groups of hemocytes: (1) a healthy group with less than 10% of tetraploid cells; (2) an intermediate group with tetraploid hemocytes ranging between 10% and 50% and (3) a diseased group with more than 50% of tetraploid cells. After the reads were cleaned by removing the adapters, de novo assembly was performed on the sequences and more than 73,696 contigs were generated with a mean contig length estimated at 585 bp ranging from 189 bp to 14,773 bp. Once a Blastx search against NCBI Non Redundant database was performed and the duplicates removed, 18,378 annotated sequences matched known sequences, 3078 were hypothetical and 9002 were uncharacterized sequences. Fifty percent and 41% of known sequences match sequences from Mollusca and Gastropoda respectively. Among the bivalvia, 33%, 17%, 17% and 15% of the contigs match sequences from Ostreoida, Veneroida, Pectinoida and Mytiloida respectively. Gene ontology analysis showed that metabolic, cellular, transport, cell communication and cell cycle represent 33%, 15%, 9%, 8.5% and 7% respectively of the total biological process. Approximately 70% of the component process is related to intracellular process and 15% is linked to protein and ribonucleoprotein complex. Catalytic activities and binding molecular processes represent 39% and 33% of the total molecular functions. Interestingly, nucleic acid binding represents more than 18% of the total protein class. Transcripts involved in the molecular mechanisms of cell cycle are discussed providing new avenues for future investigations.</p></div>","PeriodicalId":89845,"journal":{"name":"Results in immunology","volume":"3 ","pages":"Pages 95-103"},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.rinim.2013.10.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40287766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Increased production of autoantibodies and specific antibodies in response to influenza virus vaccination in physically active older individuals 身体活跃的老年人对流感病毒疫苗应答中自身抗体和特异性抗体的产生增加
Results in immunology Pub Date : 2013-01-01 DOI: 10.1016/j.rinim.2013.01.001
André L.L. Bachi , Vinicius M. Suguri , Luiz Roberto Ramos , Mario Mariano , Mauro Vaisberg , Jose D. Lopes
{"title":"Increased production of autoantibodies and specific antibodies in response to influenza virus vaccination in physically active older individuals","authors":"André L.L. Bachi ,&nbsp;Vinicius M. Suguri ,&nbsp;Luiz Roberto Ramos ,&nbsp;Mario Mariano ,&nbsp;Mauro Vaisberg ,&nbsp;Jose D. Lopes","doi":"10.1016/j.rinim.2013.01.001","DOIUrl":"10.1016/j.rinim.2013.01.001","url":null,"abstract":"<div><p>Immunosenescence is associated to aging and among many changes in immune response is reported a reduced response to vaccination and an increase in the number of cases of autoimmunity, caused by autoantibodies known as natural antibodies whose function, according to reports, would be protection against infection and inflammation. Although immunosenescence is an irreversible process, regular moderate exercise can attenuate some aspects of the decline in the immune system. So, the aim of this study was to investigate the humoral immune response in physically active elderly individuals before and 30 days after vaccination against influenza virus. The results showed that the percentage of individuals positive for antinuclear antibodies and serum immunoglobulin M and G levels after vaccination were higher in the group that exercised regularly than in the sedentary group. We were also able to demonstrate a significant correlation between levels of natural autoantibodies and response to vaccination.</p></div>","PeriodicalId":89845,"journal":{"name":"Results in immunology","volume":"3 ","pages":"Pages 10-16"},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.rinim.2013.01.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40288358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 45
Tollip-induced down-regulation of MARCH1 tollip诱导的MARCH1下调
Results in immunology Pub Date : 2013-01-01 DOI: 10.1016/j.rinim.2013.02.002
Marie-Claude Bourgeois-Daigneault , Abdul Mohammad Pezeshki , Tristan Galbas , Mathieu Houde , Martin Baril , Klaus Früh , Abdelaziz Amrani , Satoshi Ishido , Daniel Lamarre , Jacques Thibodeau
{"title":"Tollip-induced down-regulation of MARCH1","authors":"Marie-Claude Bourgeois-Daigneault ,&nbsp;Abdul Mohammad Pezeshki ,&nbsp;Tristan Galbas ,&nbsp;Mathieu Houde ,&nbsp;Martin Baril ,&nbsp;Klaus Früh ,&nbsp;Abdelaziz Amrani ,&nbsp;Satoshi Ishido ,&nbsp;Daniel Lamarre ,&nbsp;Jacques Thibodeau","doi":"10.1016/j.rinim.2013.02.002","DOIUrl":"10.1016/j.rinim.2013.02.002","url":null,"abstract":"<div><p>In addition to their classical antigen presenting functions, MHC class II molecules potentiate the TLR-triggered production of pro-inflammatory cytokines. Here, we have addressed the effect of Tollip and MARCH1 on the regulation of MHC II trafficking and TLR signaling. Our results show that MARCH1-deficient mice splenocytes are impaired in their capacity to produce pro-inflammatory cytokines in response to poly(I:C) and that TLR3 and MHC II molecules interact in the endocytic pathway. Knocking down Tollip expression in human CIITA<sup>+</sup> HeLa cells increased expression of HLA-DR but reduced the proportion of MHC II molecules associated with the CLIP peptide. Truncation of the HLA-DR cytoplasmic tails abrogated the effect of Tollip on MHC class II expression. While overexpression of Tollip did not affect HLA-DR levels, it antagonized the function of co-transfected MARCH1. We found that Tollip strongly reduced MARCH1 protein levels and that the two molecules appear to compete for binding to MHC II molecules. Altogether, our results demonstrate that Tollip regulates MHC class II trafficking and that MARCH1 may represent a new Tollip target.</p></div>","PeriodicalId":89845,"journal":{"name":"Results in immunology","volume":"3 ","pages":"Pages 17-25"},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.rinim.2013.02.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40288359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Molecular characterization and validation of commercially available methods for haptoglobin measurement in bottlenose dolphin 宽吻海豚触珠蛋白测定方法的分子表征和验证
Results in immunology Pub Date : 2013-01-01 DOI: 10.1016/j.rinim.2013.05.003
Takao Segawa , Hazumu Amatsuji , Kento Suzuki , Miwa Suzuki , Makio Yanagisawa , Takuya Itou , Takeo Sakai , Teruyuki Nakanishi
{"title":"Molecular characterization and validation of commercially available methods for haptoglobin measurement in bottlenose dolphin","authors":"Takao Segawa ,&nbsp;Hazumu Amatsuji ,&nbsp;Kento Suzuki ,&nbsp;Miwa Suzuki ,&nbsp;Makio Yanagisawa ,&nbsp;Takuya Itou ,&nbsp;Takeo Sakai ,&nbsp;Teruyuki Nakanishi","doi":"10.1016/j.rinim.2013.05.003","DOIUrl":"10.1016/j.rinim.2013.05.003","url":null,"abstract":"<div><p>Haptoglobin (Hp) is a positive acute-phase protein and a valuable marker of inflammation in both human and veterinary medicine. The aim of this study was to validate the molecular characterization of Hp in dolphins and to validate commercially available Hp measurement methods such as Hp-ELISA (originally designed for pigs) and Hp–hemoglobin (Hb) binding assay. The dolphin Hp (dHp) amino acid sequence appeared most similar to pig Hp by sequence homology and phylogenetic clustering. Amino acid sequence analysis revealed that dHp comprises the Hp1 form of α1 and β chains. The anti-pig Hp antibody cross-reacted with both recombinant dHp, expressed by <em>Escherichia coli</em>, and dHp from serum. The intra- and inter-assay levels of imprecision of pig Hp-ELISA and the Hp–Hb binding assay were found to be tolerable for the determination of Hp in dolphin, and there was no significant discrepancy between the two determination methods. The ability of the assay to differentiate between healthy and inflammation groups was investigated, and a significant increase in Hp concentration was detected in inflammatory conditions. Thus, Hp is a useful inflammation marker for dolphin, and the Hp concentration in dolphin serum samples can be reliably measured using commercially available pig Hp-ELISA and Hp–Hb binding assay.</p></div>","PeriodicalId":89845,"journal":{"name":"Results in immunology","volume":"3 ","pages":"Pages 57-63"},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.rinim.2013.05.003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40288363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Shell colour polymorphism, injuries and immune defense in three helicid snail species, Cepaea hortensis, Theba pisana and Cornu aspersum maximum 三种螺旋螺(Cepaea hortensis, Theba pisana和Cornu aspersum maximum)的壳色多态性、伤害和免疫防御
Results in immunology Pub Date : 2013-01-01 DOI: 10.1016/j.rinim.2013.06.002
Alexandra E. Scheil , Stefanie Hilsmann , Rita Triebskorn , Heinz-R. Köhler
{"title":"Shell colour polymorphism, injuries and immune defense in three helicid snail species, Cepaea hortensis, Theba pisana and Cornu aspersum maximum","authors":"Alexandra E. Scheil ,&nbsp;Stefanie Hilsmann ,&nbsp;Rita Triebskorn ,&nbsp;Heinz-R. Köhler","doi":"10.1016/j.rinim.2013.06.002","DOIUrl":"10.1016/j.rinim.2013.06.002","url":null,"abstract":"<div><p>Shell colour polymorphism is a widespread feature of various land snail species. In our study we aimed at elucidating the question whether there is a correlation between shell colouration and immune defense in three land snail species by comparing phenoloxidase (PO) activity levels of different morphs after immunostimulation via Zymosan A-injection. Since phenoloxidase is involved both in immune defense as well as in melanin production, the PO activity level is particularly interesting when trying to resolve this question. Even though Zymosan A failed to induce PO activity rendering a comparison of inducible PO activity impossible, an interesting difference between pale and dark morphs of all tested species could be observed: dark snails were less affected by hemolymph withdrawal and were able to maintain or regenerate a significantly higher PO activity level after hemolymph withdrawal than pale snails. Possible implications of this observation are discussed.</p></div>","PeriodicalId":89845,"journal":{"name":"Results in immunology","volume":"3 ","pages":"Pages 73-78"},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.rinim.2013.06.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40288365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 20
Detectability and reproducibility of plasma levels of chemokines and soluble receptors 血浆趋化因子和可溶性受体水平的可检测性和可重复性
Results in immunology Pub Date : 2013-01-01 DOI: 10.1016/j.rinim.2013.07.001
Ilir Agalliu , Xiaonan Xue , Mary Cushman , Elaine Cornell , Ann W. Hsing , Robert C. Kaplan , Kathryn Anastos , Swapnil Rajpathak , Gloria Y.F. Ho
{"title":"Detectability and reproducibility of plasma levels of chemokines and soluble receptors","authors":"Ilir Agalliu ,&nbsp;Xiaonan Xue ,&nbsp;Mary Cushman ,&nbsp;Elaine Cornell ,&nbsp;Ann W. Hsing ,&nbsp;Robert C. Kaplan ,&nbsp;Kathryn Anastos ,&nbsp;Swapnil Rajpathak ,&nbsp;Gloria Y.F. Ho","doi":"10.1016/j.rinim.2013.07.001","DOIUrl":"10.1016/j.rinim.2013.07.001","url":null,"abstract":"<div><p>Background: Multiplex assays are available to measure an array of circulating chemokines, soluble cytokine receptors and growth factors. However, there is limited information regarding whether these analytes are suitable for large-scale epidemiological studies to assess their relationships with chronic diseases, including cancer.</p><p>Methods: We examined detectability, assay repeatability, and 3-year within-subject reproducibility of plasma levels of 25 chemokines and 11 soluble receptors of cytokines and growth factors selected from the Human Millipore Panels. Plasma samples were obtained from 36 men (average age 62 years) and 17 women (average age 32 years) who participated in two epidemiological studies. Inter-assay and within-subject reproducibility were assessed by intraclass correlation coefficients (ICC).</p><p>Results: All analytes, except lymphotactin (47% detectability), were detectable in &gt;90% of plasma samples. Inter-assay reproducibility for all analytes in 36 men tested three times on separate days were good to excellent (ICCs: 0.71–1.00). Within-subject reproducibility in 17 women sampled three times in three years were excellent (ICC ≥ 0.75) for five chemokines (eotaxin, fractalkine, 6Ckine, eotaxin 3, and SDF-1α+β) and three soluble receptors (sIL-1R2, sIL-4R and sVEGFR2); ICCs were fair to good (0.4 ≤ ICC &lt; 0.75) for 15 chemokines and eight soluble receptors. However, five chemokines (GRO, IP-10, MIP-1β, BCA-1, and MIP-3α) had ICC &lt; 0.4, suggesting biological variability.</p><p>Conclusion: Multiplex assays for plasma levels of selected chemokines and soluble receptors showed good to excellent assay detectability and repeatability. Most analytes also had good 3-year within-subject reproducibility, indicating that a single measurement of these analytes may be used to assess biomarker-disease associations.</p></div>","PeriodicalId":89845,"journal":{"name":"Results in immunology","volume":"3 ","pages":"Pages 79-84"},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.rinim.2013.07.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40287764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 24
Perturbations of the CD8+ T-cell repertoire in CVID patients with complications 伴有并发症的CVID患者CD8+ t细胞库的紊乱
Results in immunology Pub Date : 2013-01-01 DOI: 10.1016/j.rinim.2013.05.004
Jean-François Viallard , Catherine Ruiz , Marina Guillet , Jean-Luc Pellegrin , Jean-François Moreau
{"title":"Perturbations of the CD8+ T-cell repertoire in CVID patients with complications","authors":"Jean-François Viallard ,&nbsp;Catherine Ruiz ,&nbsp;Marina Guillet ,&nbsp;Jean-Luc Pellegrin ,&nbsp;Jean-François Moreau","doi":"10.1016/j.rinim.2013.05.004","DOIUrl":"10.1016/j.rinim.2013.05.004","url":null,"abstract":"<div><p>A higher chronic expansion of effector cytotoxic CD8<sup>+</sup>DR<sup>+</sup> T-lymphocytes has been reported in common variable immunodeficiency (CVID) patients with complications such as splenomegaly, autoimmune disease and/or granulomatous disease. In order to document the features associated with this T cell activation involving the CD8<sup>+</sup> T-compartment, we examined the diversity of the alpha/beta TCR repertoire of the patient's CD8<sup>+</sup> T-lymphocytes using the qualitative analysis of the CDR3 lengths (Immunoscope).</p><p>Ten CIVD patients were enrolled in this study, four without complications (Group 1), six with complications (Group 2). All patients exhibited non-gaussian altered CDR3 length distributions, albeit to different extent within the different Vβ families. CVID patients with activated CD8<sup>+</sup> T-cells show a reduction of their TCR repertoire diversity which is more severe in patients with complications. Viral reactivations such as CMV are suspected to be part of the mechanisms underlying immunosenescence.</p></div>","PeriodicalId":89845,"journal":{"name":"Results in immunology","volume":"3 ","pages":"Pages 122-128"},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.rinim.2013.05.004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40287769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 24
Proof of concept: A bioinformatic and serological screening method for identifying new peptide antigens for Chlamydia trachomatis related sequelae in women 概念证明:一种鉴别女性沙眼衣原体相关后遗症新肽抗原的生物信息学和血清学筛选方法
Results in immunology Pub Date : 2013-01-01 DOI: 10.1016/j.rinim.2013.05.001
Scott H. Stansfield , Pooja Patel , Joseph Debattista , Charles W. Armitage , Kelly Cunningham , Peter Timms , John Allan , Aruna Mittal , Wilhelmina M. Huston
{"title":"Proof of concept: A bioinformatic and serological screening method for identifying new peptide antigens for Chlamydia trachomatis related sequelae in women","authors":"Scott H. Stansfield ,&nbsp;Pooja Patel ,&nbsp;Joseph Debattista ,&nbsp;Charles W. Armitage ,&nbsp;Kelly Cunningham ,&nbsp;Peter Timms ,&nbsp;John Allan ,&nbsp;Aruna Mittal ,&nbsp;Wilhelmina M. Huston","doi":"10.1016/j.rinim.2013.05.001","DOIUrl":"10.1016/j.rinim.2013.05.001","url":null,"abstract":"<div><p>This study aimed to identify new peptide antigens from <em>Chlamydia</em> (<em>C</em>.) <em>trachomatis</em> in a proof of concept approach which could be used to develop an epitope-based serological diagnostic for <em>C</em>. <em>trachomatis</em> related infertility in women. A bioinformatics analysis was conducted examining several immunodominant proteins from <em>C. trachomatis</em> to identify predicted immunoglobulin epitopes unique to <em>C</em>. <em>trachomatis</em>. A peptide array of these epitopes was screened against participant sera. The participants (all female) were categorized into the following cohorts based on their infection and gynecological history; acute (single treated infection with <em>C. trachomatis</em>), multiple (more than one <em>C. trachomatis</em> infection, all treated), sequelae (PID or tubal infertility with a history of <em>C. trachomatis</em> infection), and infertile (no history of <em>C. trachomatis</em> infection and no detected tubal damage). The bioinformatics strategy identified several promising epitopes. Participants who reacted positively in the peptide 11 ELISA were found to have an increased likelihood of being in the sequelae cohort compared to the infertile cohort with an odds ratio of 16.3 (95% c.i. 1.65–160), with 95% specificity and 46% sensitivity (0.19–0.74). The peptide 11 ELISA has the potential to be further developed as a screening tool for use during the early IVF work up and provides proof of concept that there may be further peptide antigens which could be identified using bioinformatics and screening approaches.</p></div>","PeriodicalId":89845,"journal":{"name":"Results in immunology","volume":"3 ","pages":"Pages 33-39"},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.rinim.2013.05.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40288360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
Burn-injury affects gut-associated lymphoid tissues derived CD4+ T cells 烧伤影响肠道相关淋巴组织衍生的CD4+ T细胞
Results in immunology Pub Date : 2013-01-01 DOI: 10.1016/j.rinim.2013.09.001
Nadeem Fazal , Alla Shelip , Alhusain J. Alzahrani
{"title":"Burn-injury affects gut-associated lymphoid tissues derived CD4+ T cells","authors":"Nadeem Fazal ,&nbsp;Alla Shelip ,&nbsp;Alhusain J. Alzahrani","doi":"10.1016/j.rinim.2013.09.001","DOIUrl":"10.1016/j.rinim.2013.09.001","url":null,"abstract":"<div><p>After scald burn-injury, the intestinal immune system responds to maintain immune balance. In this regard CD4+T cells in Gut-Associated Lymphoid Tissues (GALT), like mesenteric lymph nodes (MLN) and Peyer's patches (PP) respond to avoid immune suppression following major injury such as burn. Therefore, we hypothesized that the gut CD4+T cells become dysfunctional and turn the immune homeostasis towards depression of CD4+ T cell-mediated adaptive immune responses. In the current study we show down regulation of mucosal CD4+ T cell proliferation, IL-2 production and cell surface marker expression of mucosal CD4+ T cells moving towards suppressive-type. Acute burn-injury lead to up-regulation of regulatory marker (CD25+), down regulation of adhesion (CD62L, CD11a) and homing receptor (CD49d) expression, and up-regulation of negative co-stimulatory (CTLA-4) molecule. Moreover, CD4+CD25+ T cells of intestinal origin showed resistance to spontaneous as well as induced apoptosis that may contribute to suppression of effector CD4+ T cells. Furthermore, gut CD4+CD25+ T cells obtained from burn-injured animals were able to down-regulate naïve CD4+ T cell proliferation following adoptive transfer of burn-injured CD4+CD25+ T cells into sham control animals, without any significant effect on cell surface activation markers. Together, these data demonstrate that the intestinal CD4+ T cells evolve a strategy to promote suppressive CD4+ T cell effector responses, as evidenced by enhanced CD4+CD25+ T cells, up-regulated CTLA-4 expression, reduced IL-2 production, tendency towards diminished apoptosis of suppressive CD4+ T cells, and thus lose their natural ability to regulate immune homeostasis following acute burn-injury and prevent immune paralysis.</p></div>","PeriodicalId":89845,"journal":{"name":"Results in immunology","volume":"3 ","pages":"Pages 85-94"},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.rinim.2013.09.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40287765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Development and characterization of two porcine monocyte-derived macrophage cell lines 两种猪单核细胞源性巨噬细胞系的发育和特性
Results in immunology Pub Date : 2013-01-01 DOI: 10.1016/j.rinim.2013.03.001
Carol G. Chitko-McKown , Stephen K. Chapes , Laura C. Miller , Penny K. Riggs , M. Teresa Ortega , Benedict T. Green , Richard D. McKown
{"title":"Development and characterization of two porcine monocyte-derived macrophage cell lines","authors":"Carol G. Chitko-McKown ,&nbsp;Stephen K. Chapes ,&nbsp;Laura C. Miller ,&nbsp;Penny K. Riggs ,&nbsp;M. Teresa Ortega ,&nbsp;Benedict T. Green ,&nbsp;Richard D. McKown","doi":"10.1016/j.rinim.2013.03.001","DOIUrl":"10.1016/j.rinim.2013.03.001","url":null,"abstract":"<div><p>Cell lines CΔ2+ and CΔ2− were developed from monocytes obtained from a 10-month-old, crossbred, female pig. These cells morphologically resembled macrophages, stained positively for α-naphthyl esterase and negatively for peroxidase. The cell lines were bactericidal and highly phagocytic. Both cell lines expressed the porcine cell-surface molecules MHCI, CD11b, CD14, CD16, CD172, and small amounts of CD2; however, only minimal amounts of CD163 were measured. The lines were negative for the mouse marker H2K<sup>k</sup>, bovine CD2 control, and secondary antibody control. Additionally, cells tested negative for Bovine Viral Diarrhea Virus and Porcine Circovirus Type 2. Therefore, these cells resembled porcine macrophages based on morphology, cell-surface marker phenotype, and function and will be useful tools for studying porcine macrophage biology.</p></div>","PeriodicalId":89845,"journal":{"name":"Results in immunology","volume":"3 ","pages":"Pages 26-32"},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.rinim.2013.03.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31378496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
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