Results 41 to 50 of about 4,142,040 (366)
Thymic selection of T-cell receptors as an extreme value problem [PDF]
Phys. Rev. Lett. 103 (2009) 068103, 2009 T lymphocytes (T cells) orchestrate adaptive immune responses upon activation. T cell activation requires sufficiently strong binding of T cell receptors (TCRs) on their surface to short peptides (p) derived from foreign proteins, which are bound to major histocompatibility (MHC) gene products (displayed on antigen presenting cells). A diverse and self-
arxiv +1 more source
Novel disulfide bond-mediated dimerization of the CARD domain was revealed by the crystal structure of CARMA1 CARD. [PDF]
PLoS ONE, 2013 CARMA1, BCL10 and MALT1 form a large molecular complex known as the CARMA1 signalosome during lymphocyte activation. Lymphocyte activation via the CARMA1 signalosome is critical to immune response and linked to many immune diseases. Despite the important
Tae-ho Jang, Jin Hee Park, Hyun Ho Park
doaj +1 more source
Parallel processing in immune networks [PDF]
, 2012 In this work we adopt a statistical mechanics approach to investigate basic, systemic features exhibited by adaptive immune systems. The lymphocyte network made by B-cells and T-cells is modeled by a bipartite spin-glass, where, following biological prescriptions, links connecting B-cells and T-cells are sparse. Interestingly, the dilution performed on
arxiv +1 more source
Autophosphorylation and the dynamics of the activation of Lck [PDF]
arXiv, 2021 Lck (lymphocyte-specific protein tyrosine kinase) is an enzyme which plays a number of important roles in the function of immune cells. It belongs to the Src family of kinases which are known to undergo autophosphorylation. It turns out that this leads to a remarkable variety of dynamical behaviour which can occur during their activation. We prove that
arxiv
Active tuning of synaptic patterns enhances immune discrimination [PDF]
Phys. Rev. Lett. 121, 238101 (2018), 2018 Immune cells learn about their antigenic targets using tactile sense: during recognition, a highly organized yet dynamic motif, named immunological synapse, forms between immune cells and antigen-presenting cells (APCs). Via synapses, immune cells selectively extract recognized antigen from APCs by applying mechanical pulling forces generated by the ...
arxiv +1 more source
The impact of adiposity on adipose tissue-resident lymphocyte activation in humans
International Journal of Obesity, 2014 Background/objectives:The presence of T lymphocytes in human adipose tissue has only recently been demonstrated and relatively little is known of their potential relevance in the development of obesity-related diseases.
Rebecca L Travers +4 more
semanticscholar +1 more source
Vaccination with Leishmania mexicana LPG induces PD-1 in CD8+ and PD-L2 in macrophages thereby suppressing the immune response: A model to assess vaccine efficacy [PDF]
Vaccine Volume 32, Issue 11, 5 March 2014, Pages 1259-1265, 2019 Leishmania lipophosphoglycan is a molecule that has been used as a vaccine candidate, with contradictory results. Since unsuccessful protection could be related to suppressed T cell responses, we analyzed the expression of inhibitory receptor PD-1 in CD8+ and CD4+ lymphocytes and it is ligand PD-L2 in macrophages of BALB/c mice immunized with various ...
arxiv +1 more source
ORMDL3 modulates store-operated calcium entry and lymphocyte activation.
Human Molecular Genetics, 2013 T lymphocytes rely on a Ca(2+) signal known as store-operated calcium entry (SOCE) for their activation. This Ca(2+) signal is generated by activation of a T-cell receptor, depletion of endoplasmic reticulum (ER) Ca(2+) stores and activation of Ca(2 ...
Amado Carreras-Sureda +7 more
semanticscholar +1 more source
The dual nature of TDC – bridging dendritic and T cells in immunity
FEBS Letters, EarlyView.TDC are hematopoietic cells combining dendritic and T cell features. They reach secondary lymphoid organs (SLOs) and peripheral organs (liver and lungs) after FLT3‐dependent development in the bone marrow and maturation in the thymus. TDC are activated and enriched in SLOs upon viral infection, suggesting that they might play unique immune roles, since
Maria Nelli, Mirela Kuka
wiley +1 more source
Inactivation of cytidine triphosphate synthase 1 prevents fatal auto-immunity in mice
Nature CommunicationsDe novo synthesis of the pyrimidine, cytidine triphosphate (CTP), is crucial for DNA/RNA metabolism and depends on the CTP synthetases, CTPS1 and −2. Partial CTPS1 deficiency in humans has previously been shown to lead to immunodeficiency, with impaired ...
Claire Soudais +17 more
doaj +1 more source