Ex vivo mRNA expression of toll-like receptors during latent tuberculosis infection.

Abstract:

BACKGROUND:Understanding immune mechanisms, particularly the role of innate immune markers during latent TB infection remains elusive. The main objective of this study was to evaluate mRNA gene expression patterns of toll-like receptors (TLRs) as correlates of immunity during latent TB infection and further infer their roles as potential diagnostic biomarkers. METHODS:Messenger RNA (mRNA) levels were analysed in a total of 64 samples collected from apparently healthy children and adolescents latently infected with tuberculosis (n = 32) or non-infected (n = 32). Relative expression in peripheral blood of selected genes encoding TLRs (TLR-1, TLR-2, TLR-4, TLR-6 and TLR-9) was determined with a quantitative real-time polymerase chain reaction (qRT-PCR) using specific primers and florescent labelled probes and a comparative threshold cycle method to define fold change. Data were analysed using Graph-Pad Prism 7.01 for Windows and a p-value less than 0.05 was considered statistically significant. RESULTS:An increased mean fold change in the relative expression of TLR-2 and TLR-6 mRNA was observed in LTBI groups relative to non-LTBI groups (p < 0.05), whereas a slight fold decrease was observed for TLR-1 gene. CONCLUSIONS:An increased mRNA expression of TLR-2 and TLR-6 was observed in latently infected individuals relative to those non-infected, possibly indicating the roles these biomarkers play in sustenance of the steady state interaction between the dormant TB bacilli and host immunity.

journal_name

BMC Immunol

journal_title

BMC immunology

authors

Alemnew B,Hoff ST,Abebe T,Abebe M,Aseffa A,Howe R,Wassie L

doi

10.1186/s12865-021-00400-4

subject

Has Abstract

pub_date

2021-01-28 00:00:00

pages

9

issue

1

issn

1471-2172

pii

10.1186/s12865-021-00400-4

journal_volume

22

pub_type

杂志文章
  • Differential expression of CD300a/c on human TH1 and TH17 cells.

    abstract:BACKGROUND:Human memory CD4+ T cells can be either CD300a/c+ or CD300a/c- and subsequent analyses showed that CD4+ effector memory T (T(EM)) cells are mostly CD300a/c+, whereas CD4+ central memory T (T(CM)) cells have similar frequencies of CD300a/c+ and CD300a/c- cells. RESULTS:Extensive phenotypical and functional c...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-12-62

    authors: Simhadri VR,Mariano JL,Zhou Q,DeBell KE,Borrego F

    更新日期:2011-11-02 00:00:00

  • Potential T cell epitopes of Mycobacterium tuberculosis that can instigate molecular mimicry against host: implications in autoimmune pathogenesis.

    abstract:BACKGROUND:Molecular mimicry between microbial antigens and host-proteins is one of the etiological enigmas for the occurrence of autoimmune diseases. T cells that recognize cross-reactive epitopes may trigger autoimmune reactions. Intriguingly, autoimmune diseases have been reported to be prevalent in tuberculosis end...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-13-13

    authors: Chodisetti SB,Rai PK,Gowthaman U,Pahari S,Agrewala JN

    更新日期:2012-03-21 00:00:00

  • The discriminative capacity of soluble Toll-like receptor (sTLR)2 and sTLR4 in inflammatory diseases.

    abstract:BACKGROUND:The extracellular domains of cytokine receptors are released during inflammation, but little is known about the shedding of Toll-like receptors (TLR) and whether they can be used as diagnostic biomarkers. METHODS:The release of sTLR2 and sTLR4 was studied in in-vitro stimulations, as well as in-vivo during ...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/s12865-014-0055-y

    authors: Ten Oever J,Kox M,van de Veerdonk FL,Mothapo KM,Slavcovici A,Jansen TL,Tweehuysen L,Giamarellos-Bourboulis EJ,Schneeberger PM,Wever PC,Stoffels M,Simon A,van der Meer JW,Johnson MD,Kullberg BJ,Pickkers P,Pachot A,Jooste

    更新日期:2014-11-19 00:00:00

  • The prokineticin receptor agonist Bv8 decreases IL-10 and IL-4 production in mice splenocytes by activating prokineticin receptor-1.

    abstract:BACKGROUND:Bv8, prokineticin-1, or endocrine gland-vascular endothelial growth factor, and prokineticin-2 are recently isolated peptide agonists of two G protein-coupled receptors, prokineticin receptor-1 (PROKR 1) and PROKR 2, and have been described as affecting a number of myeloid cell functions. We evaluated the im...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-9-60

    authors: Franchi S,Giannini E,Lattuada D,Lattanzi R,Tian H,Melchiorri P,Negri L,Panerai AE,Sacerdote P

    更新日期:2008-10-28 00:00:00

  • Multifaceted effects of synthetic TLR2 ligand and Legionella pneumophilia on Treg-mediated suppression of T cell activation.

    abstract:BACKGROUND:Regulatory T cells (Treg) play a crucial role in maintaining immune homeostasis and self-tolerance. The immune suppressive effects of Tregs should however be limited in case effective immunity is required against pathogens or cancer cells. We previously found that the Toll-like receptor 2 (TLR2) agonist, Pam...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-12-23

    authors: van Maren WW,Nierkens S,Toonen LW,Bolscher JM,Sutmuller RP,Adema GJ

    更新日期:2011-03-24 00:00:00

  • Standardization and performance evaluation of mononuclear cell cytokine secretion assays in a multicenter study.

    abstract:BACKGROUND:Cryopreservation of peripheral blood mononuclear cells has been used to preserve and standardize immunologic measurements for multicenter studies, however, effects of cryopreservation on cytokine responses are incompletely understood. In designing immunologic studies for a new multicenter birth cohort study ...

    journal_title:BMC immunology

    pub_type: 杂志文章,多中心研究

    doi:10.1186/1471-2172-7-29

    authors: Shreffler WG,Visness CM,Burger M,Cruikshank WW,Lederman HM,de la Morena M,Grindle K,Calatroni A,Sampson HA,Gern JE

    更新日期:2006-12-12 00:00:00

  • Down selecting adjuvanted vaccine formulations: a comparative method for harmonized evaluation.

    abstract:BACKGROUND:The need for rapid and accurate comparison of panels of adjuvanted vaccine formulations and subsequent rational down selection, presents several challenges for modern vaccine development. Here we describe a method which may enable vaccine and adjuvant developers to compare antigen/adjuvant combinations in a ...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/s12865-018-0245-0

    authors: Younis SY,Barnier-Quer C,Heuking S,Sommandas V,Brunner L,Vd Werff N,Dubois P,Friede M,Kocken C,Collin N,Remarque E

    更新日期:2018-01-31 00:00:00

  • EGR2 is elevated and positively regulates inflammatory IFNγ production in lupus CD4+ T cells.

    abstract:BACKGROUND:Recent studies have shown that early growth response 2 (EGR2) is highly induced in activated T cells and regulates T cell functions. In normal C57BL/6 (B6) mice, deletion of EGR2 in lymphocytes results in the development of lupus-like systemic autoimmune disease, which implies indirectly an autoimmune protec...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/s12865-020-00370-z

    authors: Dai R,Heid B,Xu X,Xie H,Reilly CM,Ahmed SA

    更新日期:2020-07-09 00:00:00

  • Altered endotoxin responsiveness in healthy children with Down syndrome.

    abstract:BACKGROUND:Down syndrome (DS) is the most common syndromic immunodeficiency with an increased risk of infection, mortality from sepsis, and autoinflammation. Innate immune function is altered in DS and therefore we examined responses in CD11b and Toll like receptor 4 (TLR-4), which are important immune cell surface mar...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/s12865-018-0270-z

    authors: Huggard D,McGrane F,Lagan N,Roche E,Balfe J,Leahy TR,Franklin O,Moreno A,Melo AM,Doherty DG,Molloy EJ

    更新日期:2018-11-03 00:00:00

  • Bacillus anthracis' lethal toxin induces broad transcriptional responses in human peripheral monocytes.

    abstract:BACKGROUND:Anthrax lethal toxin (LT), produced by the Gram-positive bacterium Bacillus anthracis, is a highly effective zinc dependent metalloprotease that cleaves the N-terminus of mitogen-activated protein kinase kinases (MAPKK or MEKs) and is known to play a role in impairing the host immune system during an inhalat...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-13-33

    authors: Chauncey KM,Lopez MC,Sidhu G,Szarowicz SE,Baker HV,Quinn C,Southwick FS

    更新日期:2012-07-02 00:00:00

  • Characterization of murine macrophages from bone marrow, spleen and peritoneum.

    abstract:BACKGROUND:Macrophages have heterogeneous phenotypes and complex functions within both innate and adaptive immune responses. To date, most experimental studies have been performed on macrophages derived from bone marrow, spleen and peritoneum. However, differences among macrophages from these particular sources remain ...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-14-6

    authors: Wang C,Yu X,Cao Q,Wang Y,Zheng G,Tan TK,Zhao H,Zhao Y,Wang Y,Harris DCh

    更新日期:2013-02-05 00:00:00

  • Changes in colon gene expression associated with increased colon inflammation in interleukin-10 gene-deficient mice inoculated with Enterococcus species.

    abstract:BACKGROUND:Inappropriate responses to normal intestinal bacteria may be involved in the development of Inflammatory Bowel Diseases (IBD, e.g. Crohn's Disease (CD), Ulcerative Colitis (UC)) and variations in the host genome may mediate this process. IL-10 gene-deficient (Il10-/-) mice develop CD-like colitis mainly in t...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-11-39

    authors: Barnett MP,McNabb WC,Cookson AL,Zhu S,Davy M,Knoch B,Nones K,Hodgkinson AJ,Roy NC

    更新日期:2010-07-15 00:00:00

  • Multi-layered Gag-specific immunodominant responses contribute to improved viral control in the CRF01_AE subtype of HIV-1-infected MSM subjects.

    abstract:BACKGROUND:The purpose of this study was to characterize specific cytotoxic T-cell (CTL) responses in men who have sex with men (MSM) subjects infected with the human immunodeficiency virus type 1 (HIV-1) CRF01_AE subtype during the first year of infection and impacts on viral control and evolution. RESULTS:Fifteen HI...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/s12865-016-0166-8

    authors: Jiang F,Han X,Zhang H,Zhao B,An M,Xu J,Chu Z,Dong T,Shang H

    更新日期:2016-08-30 00:00:00

  • Streptococcus pneumoniae stabilizes tumor necrosis factor alpha mRNA through a pathway dependent on p38 MAPK but independent of Toll-like receptors.

    abstract:BACKGROUND:Streptococcus pneumoniae is a human pathogenic bacteria and a major cause of severe invasive diseases, including pneumonia, bacteremia, and meningitis. Infections with S. pneumoniae evoke a strong inflammatory response, which plays a major role in the pathogenesis of pneumococcal disease. RESULTS:In this st...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-9-52

    authors: Mogensen TH,Berg RS,Ostergaard L,Paludan SR

    更新日期:2008-09-16 00:00:00

  • Ten-color flow cytometry reveals distinct patterns of expression of CD124 and CD126 by developing thymocytes.

    abstract:BACKGROUND:We have developed a 12-parameter/10-color flow cytometric staining method for the simultaneous detection and characterization of 21 mouse thymocyte subpopulations that represent discreet stages of T cell development. To demonstrate the utility of this method, we assessed cytokine receptor expression on mouse...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-12-36

    authors: Tan C,Taylor AA,Coburn MZ,Marino JH,Van De Wiele CJ,Teague TK

    更新日期:2011-06-20 00:00:00

  • Detection of IL-9 producing T cells in the PBMCs of allergic asthmatic patients.

    abstract:BACKGROUND:Interleukin-9 (IL-9) was reported as an active participant in the pathogenesis of allergic asthma. This study aimed to investigate the major source ofIL-9 and its effect on interferon γ (IFN-γ) and immunoglobulin (Ig) secretion by B cells. METHODS:We isolated peripheral blood mononuclear cells from children...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/s12865-017-0220-1

    authors: Jia L,Wang Y,Li J,Li S,Zhang Y,Shen J,Tan W,Wu C

    更新日期:2017-07-19 00:00:00

  • Efficient adenovirus-mediated gene transfer into primary T cells and thymocytes in a new coxsackie/adenovirus receptor transgenic model.

    abstract:BACKGROUND:Gene transfer studies in primary T cells have suffered from the limitations of conventional viral transduction or transfection techniques. Replication-defective adenoviral vectors are an attractive alternative for gene delivery. However, naive lymphocytes are not readily susceptible to infection with adenovi...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-3-4

    authors: Hurez V,Dzialo-Hatton R,Oliver J,Matthews RJ,Weaver CT

    更新日期:2002-05-02 00:00:00

  • Characteristics and reference ranges of CD4+T cell subpopulations among healthy adult Han Chinese in Shanxi Province, North China.

    abstract:BACKGROUND:Immunophenotyping of blood lymphocytes is an essential tool to evaluate the immune function of patients with immunodeficiency or autoimmunity. Predominately identified CD4+T cell subsets, Th1, Th2, Th17, as well as regulatory T (Treg) cells, play crucial roles in several immunological and pathological condit...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/s12865-020-00374-9

    authors: Niu HQ,Zhao XC,Li W,Xie JF,Liu XQ,Luo J,Zhao WP,Li XF

    更新日期:2020-08-03 00:00:00

  • Tolerance induced via TLR2 and TLR4 in human dendritic cells: role of IRAK-1.

    abstract:BACKGROUND:While dendritic cells (DCs) can induce tolerance in T cells, little is known about tolerance induction in DCs themselves. We have analysed tolerance induced in human in-vitro generated DCs by repeated stimulation with ligands for TLR4 and TLR2. RESULTS:DCs stimulated with the TLR4 ligand LPS did show a rapi...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-9-69

    authors: Albrecht V,Hofer TP,Foxwell B,Frankenberger M,Ziegler-Heitbrock L

    更新日期:2008-11-24 00:00:00

  • Differential effects of Paclitaxel on dendritic cell function.

    abstract:BACKGROUND:The potential utility of dendritic cells (DC) as cancer vaccines has been established in early trials in human cancers. The concomitant administration of cytotoxic agents and DC vaccines has been previously avoided due to potential immune suppression by chemotherapeutics. Recent studies show that common chem...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-11-14

    authors: John J,Ismail M,Riley C,Askham J,Morgan R,Melcher A,Pandha H

    更新日期:2010-03-19 00:00:00

  • Respiratory burst function of ovine neutrophils.

    abstract:BACKGROUND:Respiratory burst function resulting in the release of reactive oxygen species such as superoxide anion (O2-) from neutrophils is one of the key mechanisms of the innate immune system, and maladaptive control of this mechanism is thought to play a pivotal role in the development of pathologies such as acute ...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-10-25

    authors: Tung JP,Fraser JF,Wood P,Fung YL

    更新日期:2009-05-08 00:00:00

  • Changes in IgE- and antigen-dependent histamine-release in peripheral blood of Schistosoma mansoni-infected Ugandan fishermen after treatment with praziquantel.

    abstract:BACKGROUND:Parasite-specific IgE levels correlate with human resistance to reinfection with Schistosoma spp. after chemotherapy. Although the role of eosinophils in schistosomiasis has been the focus of a great deal of important research, the involvement of other Fcepsilon receptor-bearing cells, such as mast cells and...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-5-6

    authors: Satti MZ,Cahen P,Skov PS,Joseph S,Jones FM,Fitzsimmons C,Hoffmann KF,Reimert C,Kariuki HC,Kazibwe F,Mwatha JK,Kimani G,Vennervald BJ,Ouma JH,Kabatereine NB,Dunne DW

    更新日期:2004-04-21 00:00:00

  • Secretion of celiac disease autoantibodies after in vitro gliadin challenge is dependent on small-bowel mucosal transglutaminase 2-specific IgA deposits.

    abstract:BACKGROUND:In celiac disease gluten, the disease-inducing toxic component in wheat, induces the secretion of autoantibodies which are targeted against transglutaminase 2 (TG2). These autoantibodies are produced in the small-intestinal mucosa, where they can be found deposited extracellularly below the epithelial baseme...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-9-6

    authors: Stenman SM,Lindfors K,Korponay-Szabo IR,Lohi O,Saavalainen P,Partanen J,Haimila K,Wieser H,Mäki M,Kaukinen K

    更新日期:2008-02-29 00:00:00

  • Impact of endobronchial allergen provocation on macrophage phenotype in asthmatics.

    abstract:BACKGROUND:The role of M2 polarized macrophages (MΦ) during the allergic airway inflammation has been discussed in various animal models. However, their presence and relevance during the chronic and acute phase of allergic airway inflammation in humans has not been fully elucidated so far. In the present study we pheno...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-15-12

    authors: Winkler C,Witte L,Moraw N,Faulenbach C,Müller M,Holz O,Schaumann F,Hohlfeld JM

    更新日期:2014-03-10 00:00:00

  • Streptococcus sanguinis-induced cytokine and matrix metalloproteinase-1 release from platelets.

    abstract:BACKGROUND:Streptococcus sanguinis (S.sanguinis), a predominant bacterium in the human oral cavity, has been widely associated with the development of infective endocarditis. Platelets play both a haemostatic function and can influence both innate and adaptive immune responses. Previous studies have shown that S.sangui...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-15-15

    authors: Cognasse F,Hamzeh-Cognasse H,Chabert A,Jackson E,Arthaud CA,Garraud O,McNicol A

    更新日期:2014-04-22 00:00:00

  • Activation of tonsil dendritic cells with immuno-adjuvants.

    abstract:BACKGROUND:Dendritic cells (DC) play the key role in directing antigen-specific immune responses and manipulating their function may be a useful tool for immunotherapy. The balance between immune stimulation and tolerance is particularly important at mucosal interfaces, where discrimination between dangerous pathogens ...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-9-10

    authors: Polak ME,Borthwick NJ,Gabriel FG,Jager MJ,Cree IA

    更新日期:2008-03-18 00:00:00

  • Subsets of mononuclear phagocytes are enriched in the inflamed colons of patients with IBD.

    abstract:BACKGROUND:Myeloid cells, especially mononuclear phagocytes, which include monocytes, macrophages and dendritic cells (DC), play vital roles in innate immunity, and in the initiation and maintenance of adaptive immunity. While T cell-associated activation pathways and cytokines have been identified and evaluated in inf...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/s12865-019-0322-z

    authors: Liu H,Dasgupta S,Fu Y,Bailey B,Roy C,Lightcap E,Faustin B

    更新日期:2019-11-12 00:00:00

  • Interleukin-1beta and tumour necrosis factor-alpha impede neutral lipid turnover in macrophage-derived foam cells.

    abstract:BACKGROUND:Pro-inflammatory cytokines can affect intracellular lipid metabolism. A variety of effects have been described for different cell types; hepatocyte lipid turnover pathways are inhibited during inflammation, whereas interleukin-1beta (IL-1beta) reduces intracellular cholesterol levels in fibroblasts. Levels o...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-9-70

    authors: Persson J,Nilsson J,Lindholm MW

    更新日期:2008-11-25 00:00:00

  • Revisiting the B-cell compartment in mouse and humans: more than one B-cell subset exists in the marginal zone and beyond.

    abstract::The immunological roles of B-cells are being revealed as increasingly complex by functions that are largely beyond their commitment to differentiate into plasma cells and produce antibodies, the key molecular protagonists of innate immunity, and also by their compartmentalisation, a more recently acknowledged property...

    journal_title:BMC immunology

    pub_type: 杂志文章,评审

    doi:10.1186/1471-2172-13-63

    authors: Garraud O,Borhis G,Badr G,Degrelle S,Pozzetto B,Cognasse F,Richard Y

    更新日期:2012-11-29 00:00:00

  • Effects of F/G-actin ratio and actin turn-over rate on NADPH oxidase activity in microglia.

    abstract:BACKGROUND:Most in vivo studies that have addressed the role of actin dynamics in NADPH oxidase function in phagocytes have used toxins to modulate the polymerization state of actin and mostly effects on actin has been evaluated by end point measurements of filamentous actin, which says little about actin dynamics, and...

    journal_title:BMC immunology

    pub_type: 杂志文章

    doi:10.1186/1471-2172-11-44

    authors: Rasmussen I,Pedersen LH,Byg L,Suzuki K,Sumimoto H,Vilhardt F

    更新日期:2010-09-08 00:00:00