Abstract:
:Experimental animal models of tuberculosis (TB) have convincingly demonstrated that inhaled dose predicts immunopathology and survival. In contrast, the importance of inhaled dose has generally not been appreciated in TB epidemiology, clinical science, or the practice of TB control. Infectiousness of TB patients has traditionally been assessed using microscopy for acid-fast bacilli in the sputum, which should be considered only a risk factor. We have recently demonstrated that cough aerosol cultures from index cases with pulmonary TB are the best predictors of new infection among household contacts. We suggest that cough aerosols of M. tuberculosis are the best surrogates of inhaled dose, and we hypothesize that the quantity of cough aerosols is associated with TB infection versus disease. Although several factors affect the quality of infectious aerosols, we propose that the particle size distribution of cough aerosols is an important predictor of primary upper airway disease and cervical lymphadenitis and of immune responses in exposed hosts. We hypothesize that large droplet aerosols (>5 μ) containing M. tuberculosis deposit in the upper airway and can induce immune responses without establishing infection. We suggest that this may partially explain the large proportion of humans who never develop TB disease in spite of having immunological evidence of M. tuberculosis infection (e.g., positive tuberculin skin test or interferon gamma release assay). If these hypotheses are proven true, they would alter the current paradigm of latent TB infection and reactivation, further demonstrating the need for better biomarkers or methods of assessing TB infection and the risk of developing disease.
journal_name
Front Immunoljournal_title
Frontiers in immunologyauthors
Fennelly KP,Jones-López ECdoi
10.3389/fimmu.2015.00313subject
Has Abstractpub_date
2015-06-29 00:00:00pages
313issn
1664-3224journal_volume
6pub_type
杂志文章,评审abstract::Macrophages are heterogeneous leukocytes regulated in a tissue- and disease-specific context. While in vitro macrophage models have been used to study diseases empirically, a systematic analysis of the transcriptome thereof is lacking. Here, we acquired gene expression data from eight commonly-used in vitro macrophage...
journal_title:Frontiers in immunology
pub_type: 杂志文章,meta分析
doi:10.3389/fimmu.2019.02887
更新日期:2019-12-11 00:00:00
abstract::γδ T cells, known to be an important source of innate IL-17 in mice, provide critical contributions to host immune responses. Development and function of γδ T cells are directed by networks of diverse transcription factors (TFs). Here, we examine the role of the zinc finger TFs, Kruppel-like factor 10 (KLF10), in the ...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2018.00196
更新日期:2018-02-28 00:00:00
abstract::PD-1, TIM-3, and LAG-3 are molecules shown to have immune modulatory properties, and although initially classified as indicators of T cell hyporesponsiveness, it has become clear that they are also associated with the normal course of T cell activation. Functional studies have focused mainly on CD8(+) T cells during c...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2016.00221
更新日期:2016-06-16 00:00:00
abstract::Mucosal-associated Invariant T (MAIT) cells recognize vitamin B-based antigens presented by the non-polymorphic MHC class I related-1 molecule (MR1). Both MAIT T cell receptors (TCR) and MR1 are highly conserved among mammals, suggesting an important, and conserved, immune function. For many years, the antigens they r...
journal_title:Frontiers in immunology
pub_type: 杂志文章,评审
doi:10.3389/fimmu.2020.01961
更新日期:2020-08-27 00:00:00
abstract::CD4+ regulatory T cells have been intensively studied during aging, but little is still known about age-related changes of other regulatory T cell subsets. It was, therefore, the goal of the present study to analyze CD8+human leukocyte antigen-antigen D related (HLADR)+ T cells in old age, a cell population reported t...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2018.01201
更新日期:2018-06-04 00:00:00
abstract::Distinctive molecular characteristics of functionally diverse lymphocyte populations may represent novel pharmacological targets for immunotherapy. The intrinsic apoptosis pathway is differently regulated among conventional and regulatory T cells (Tregs). Targeted pharmacological modulation of this pathway with a smal...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2016.00073
更新日期:2016-03-01 00:00:00
abstract::Large-scale study of the properties of T-cell receptor (TCR) and B-cell receptor (BCR) repertoires through next-generation sequencing is providing excellent insights into the understanding of adaptive immune responses. Variable(Diversity)Joining [V(D)J] germline genes and alleles must be characterized in detail to fac...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2016.00457
更新日期:2016-11-04 00:00:00
abstract::Immunotherapies are rapidly being integrated into standard of care (SOC) therapy in conjunction with surgery, chemotherapy, and radiotherapy for many cancers and a large number of clinical studies continue to explore immunotherapy alone and as part of combination therapies in patients with cancer. It is evident that c...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2019.01767
更新日期:2019-07-31 00:00:00
abstract::Adenosine (Ado) is a well-studied neurotransmitter, but it also exerts profound immune regulatory functions. Ado can (i) actively be released by various cells into the tissue environment and can (ii) be produced through the degradation of extracellular ATP by the concerted action of CD39 and CD73. In this sequence of ...
journal_title:Frontiers in immunology
pub_type: 杂志文章,评审
doi:10.3389/fimmu.2018.02581
更新日期:2018-11-09 00:00:00
abstract::Endometriosis, a common cause of pelvic pain and female infertility, depends on the growth of vascularized endometrial tissue at ectopic sites. Endometrial fragments reach the peritoneal cavity during the fertile years: local cues decide whether they yield endometriotic lesions. Macrophages are recruited at sites of h...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2013.00009
更新日期:2013-01-28 00:00:00
abstract::MR1-restricted T (MR1T) cells are defined by their recognition of metabolite antigens presented by the monomorphic MHC class 1-related molecule, MR1, the most highly conserved MHC class I related molecule in mammalian species. Mucosal-associated invariant T (MAIT) cells are the predominant subset of MR1T cells express...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2020.556695
更新日期:2020-09-16 00:00:00
abstract::Damage associated molecular patterns (DAMPs) are endogenous molecules originate from damaged cells and tissues with the ability to trigger and/or modify innate immune responses. Upon hemolysis hemoglobin (Hb) is released from red blood cells (RBCs) to the circulation and give a rise to the production of different Hb r...
journal_title:Frontiers in immunology
pub_type: 杂志文章,评审
doi:10.3389/fimmu.2020.01323
更新日期:2020-06-30 00:00:00
abstract::The critical role of interferons (IFNs) in mediating the innate immune response to cytomegalovirus (CMV) infection is well established. However, in recent years the functional importance of the IFN-independent antiviral response has become clearer. IFN-independent, IFN regulatory factor 3 (IRF3)-dependent interferon-s...
journal_title:Frontiers in immunology
pub_type: 杂志文章,评审
doi:10.3389/fimmu.2019.02751
更新日期:2019-12-11 00:00:00
abstract::Aerobic glycolysis is a recognized feature shared by tumors, leading to the accumulation of lactic acid in their local microenvironments. Like the tumors, the blastocysts, placenta, trophoblasts and decidual immune cells can also produce a large amount of lactic acid through aerobic glycolysis during the early pregnan...
journal_title:Frontiers in immunology
pub_type: 杂志文章,评审
doi:10.3389/fimmu.2020.00279
更新日期:2020-02-27 00:00:00
abstract::Malaria infections remain a serious global health problem in the world, particularly among children and pregnant women in Sub-Saharan Africa. Moreover, malaria control and elimination is hampered by rapid development of resistance by the parasite and the vector to commonly used antimalarial drugs and insecticides, res...
journal_title:Frontiers in immunology
pub_type: 杂志文章,评审
doi:10.3389/fimmu.2019.00136
更新日期:2019-02-11 00:00:00
abstract::In recent years, chimeric antigen receptor (CAR) T-cell therapy has become popular in immunotherapy, particularly after its tremendous success in the treatment of lineage-restricted hematologic cancers. However, the application of CAR T-cell therapy for solid tumors has not reached its full potential because of the la...
journal_title:Frontiers in immunology
pub_type: 杂志文章,评审
doi:10.3389/fimmu.2017.01934
更新日期:2017-12-22 00:00:00
abstract::Objectives: This study, developed within the Innovative Medicines Initiative Joint Undertaking project PRECISESADS framework, aimed at functionally characterize the monocyte subsets in RA patients, and analyze their involvement in the increased CV risk associated with RA. Methods: The frequencies of monocyte subpopula...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2019.01111
更新日期:2019-05-21 00:00:00
abstract::Macrophage plasticity is a process that allows macrophages to switch between two opposing phenotypes based on differential stimuli. Interferon γ (IFNγ)-primed macrophages stimulated with lipopolysaccharide (LPS) [M(IFNγ+LPS)] produce high levels of pro-inflammatory cytokines such as IL-12, TNFα, and IL-6 and low level...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2019.02956
更新日期:2020-01-10 00:00:00
abstract::Diseases due to mycobacteria, including tuberculosis, leprosy, and Buruli ulcer, rank among the top causes of death and disability worldwide. Animal studies have revealed the importance of T cells in controlling these infections. However, the specific antigens recognized by T cells that confer protective immunity and ...
journal_title:Frontiers in immunology
pub_type: 杂志文章,评审
doi:10.3389/fimmu.2020.00170
更新日期:2020-02-11 00:00:00
abstract::Objectives: Fibrosis is a hallmark of systemic sclerosis (SSc), an intractable disease where innovative strategies are still being sought. Among novel anti-fibrotic approaches, mesenchymal stromal/stem cell (MSC)-based therapy appears promising. Previously, we reported anti-fibrotic effects of MSC in an experimental m...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2018.03056
更新日期:2018-12-21 00:00:00
abstract::Mesenchymal stromal cells (MSCs) exert immunosuppressive effects on immune cells including dendritic cells (DCs). However, many details of the bidirectional interaction of MSCs with DCs are still unsolved and information on key molecules by which DCs can modulate MSC functions is limited. Here, we report that osteopon...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2018.01207
更新日期:2018-06-01 00:00:00
abstract::Toll-like receptor 9 (TLR9) belongs to the group of endosomal receptors of the innate immune system with the ability to recognize hypomethylated CpG sequences from DNA. There is scarce information about TLR9 expression and its association with the circadian cycle (CC). Different patterns of TLR9 expression are regulat...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2018.01497
更新日期:2018-07-06 00:00:00
abstract::The protein kinase C-θ (PKCθ), which is essential for T cell function and survival, is also required for efficient anti-tumor immune surveillance. Natural killer (NK) cells, which express PKCθ, play a prominent role in this process, mainly by elimination of tumor cells with reduced or absent major histocompatibility c...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2012.00187
更新日期:2012-07-05 00:00:00
abstract::Colony-stimulating factor 1 (CSF1) and interleukin 34 (IL34) signal via the CSF1 receptor to regulate macrophage differentiation. Studies in IL34- or CSF1-deficient mice have revealed that IL34 function is limited to the central nervous system and skin during development. However, the roles of IL34 and CSF1 at homeost...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2019.02019
更新日期:2019-09-04 00:00:00
abstract::Leprosy is a chronic bacterial disease caused by Mycobacterium leprae. Cytokines are known to play vital role as a peacekeeper during inflammatory and other immunocompromised conditions such as leprosy. This study has tried to bridge the gap of information on cytokine gene polymorphisms and its potential role in the p...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2020.01974
更新日期:2020-08-06 00:00:00
abstract::Pigs are important livestock and comprehensive understanding of their immune responses in infections is critical to improve vaccines and therapies. Moreover, similarities between human and swine physiology suggest that pigs are a superior animal model for immunological studies. However, paucity of experimental tools f...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2019.01380
更新日期:2019-06-18 00:00:00
abstract::Recent studies have demonstrated that combination of modulatory immune strategies may potentiate tumor cell elimination. Most strategies rely on the use of monoclonal antibodies that can block cell surface receptors to overcome tumor-induced immunosuppression or acting as costimulatory ligands to boost activation of T...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2017.01150
更新日期:2017-09-19 00:00:00
abstract::Lower respiratory tract infections and tuberculosis are responsible for the death of about 4.5 million people each year and are the main causes of mortality in children under 5 years of age. Streptococcus pneumoniae is the most common bacterial pathogen associated with severe pneumonia, although other Gram-positive an...
journal_title:Frontiers in immunology
pub_type: 杂志文章,评审
doi:10.3389/fimmu.2018.02252
更新日期:2018-10-16 00:00:00
abstract::The cytosolic adhesion and degranulation-promoting adapter protein ADAP is expressed in various hematopoietic cells including T cells, NK cells, myeloid cells, and platelets but absent in mature B cells. The role of ADAP in T cell activation, proliferation and integrin activation is well-accepted. We previously demons...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2019.02343
更新日期:2019-10-01 00:00:00
abstract::Recent studies have identified CD49a+Eomes- and CD49a+Eomes+ subsets of tissue-resident NK (trNK) cells in different organs of the mouse. However, the characteristics of CD49a+Eomes-/+ NK cell development and the regulation of Eomes expression in NK cells remain unclear. Here, we established an in vitro cytokine-based...
journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2018.02126
更新日期:2018-09-25 00:00:00