Sentences with phrase «of effector cells»

Site - specific administration of chemokines (CXCL9 - 10) restored homing signals that were diminished in septic hosts to permit recruitment of effector cells to the skin.

Not exact matches

Our research enhances the traditional understanding of the plant defense system and describes a new concept describing how plants protect themselves against the pathogens that grow in the space outside plant cells (the apoplast)-- a new concept called effector - triggered defense or ETD.»

These results suggest GSK2636771 treatment can «synergize» with OX40 agonist antibodies to augment effector functions of tumor - reactive T cells.»

The researchers studied two types of cells called effector T cells, which activate the immune system to defend our body against different pathogens, and regulatory T cells, which help control the immune system and prevent it from attacking healthy parts of its environment.

The spleen showed increased expansion of antigen - experienced effector and memory CD4 + T - cells.

«Previously it was thought that HIV was hiding primarily in central memory T - cells, but our new HIV genetic sequencing test has revealed that the majority of replication - competent virus is actually hiding in effector memory T - cells.

However, it is this small proportion of virus that hides in the effector memory T - cells and stops the immune system from fully destroying the virus and eliminating it from the body.

We identified distinct clusters of CD4 - CTL effector and precursor cells in the TEMRA subset; the precursor cells shared TCR clonotypes with CD4 - CTL effectors and were distinguished by high expression of the interleukin - 7 receptor.

Single - cell differential gene expression analysis revealed a spectrum of known transcripts, including several linked to cytotoxic and costimulatory function that are expressed at higher levels in the TEMRA (effector memory T cells expressing CD45RA) subset, which is highly enriched for CD4 - CTLs, compared with CD4 + T cells in the central memory (TCM) and effector memory (TEM) subsets.

Their results demonstrate that specific rhoptry and dense granule effector proteins that T. gondii secretes before and after host cell invasion, respectively, control the development of an effective host antitumor response, and increase the survival of mice with ovarian tumors.

«Preventing graft - versus - host disease and relapse after transplant requires a difficult balance of eliminating the bad, overactive effector T cells, without suppressing the good, regulatory T cells,» said Kean, who is also an associate professor of pediatrics at the University of Washington School of Medicine and a member of the Fred Hutchinson Cancer Research Center.

Partial activation of the yeast pheromone response pathway by beta - adrenergic receptor agonists was achieved in cells coexpressing h beta - AR and a mammalian G protein (Gs) alpha subunit - demonstrating that these components can couple to each other and to downstream effectors when expressed in yeast.

In their models, abatacept reduced the proliferation and activation of effector T cells.

In many cases the damage is caused by a particular group of immune cells called effector memory T - cells.

The final component in this long series of signal sequences is the Yorkie effector protein that is the decisive factor at the end of the Hippo signaling pathway and determines the start of reactivation, growth, and division in the stem cells.

Calmodulin (CaM) is a major effector for the intracellular actions of Ca2 + in nearly all cell types.

A recent paper in the experimental biology publication The FASEB Journal describes how peptides found in hookworms inhibit the proliferation of effector memory T cells, which, unlike regulatory T cells, can actually trigger inflammation.

«BOK is an effector of mitochondrial apoptosis that appears to work in a different way to known proteins that initiate mitchondrial cell death,» said Fabien Llambi, Research Laboratory Specialist at St. Jude and the first author of the paper.

This «friendly fire» goes unchecked due to the failing of another type of immune cell: called the T - reg, which controls T - effector cells, shutting them down when they are not needed.

«What these new findings on exhausted T cells tells us is that the unique epigenetic profile of exhausted T cells causes these cells to express a different overall set of genes compared to memory or effector T cells,» Wherry said.

His group showed that a small number of stem - cell like CD8 T cells - called «memory» cells - were enough to produce and repeatedly replenish all of the T - effector cells needed to fight the disease.

These findings suggested that exhausted T cells are a distinct lineage of T cells in and of themselves instead of just being effector or memory T cells restrained by checkpoint pathways.

The phenotype of NP cells generated ex vivo (Figure S8) closely resembles that of central memory CD4 + T cells found in vivo, which persist for years in secondary lymphoid organs and can differentiate into effector memory CD4 + T cells [45].

The development of GVHD was equivalent between the two groups (data not shown), suggesting that treatment with X4 - ZFNs did not affect CD4 + T cell effector functionality.

Relative importance of rotavirus - specific effector and memory B cell responses in protection against challenge.

She demonstrated, for the first time, that the pathogenesis of type 1 diabetes in NOD mice correlated with an enhanced pathogenicity of T effector cells and a decreased suppressive activity of Tregs.

We will develop mathematical models to predict the pathways of differentiation from naive to memory and effector T - cell subsets based on the characterisation of surface marker expression, transcription factors and cytokines production at early and late time points after immunisation.

Recently, we showed that bortezomib treatment in mice bearing breast and kidney tumors provided host survival benefit by amplifying tumor cell caspase8 activation, CD8T cell effector molecules via increased NotchNFkB crosstalk and Fas ligandmediated lysis of tumor cells.

Differential glycosylation of TH1, TH2 and TH - 17 effector cells selectively regulates susceptibility to cell death.

Rejection by CD8 + T cells does not appear to involve either allospecific CTL or DTH effector mechanisms; however, CD8 + T cells are able to induce significant apoptosis of allogeneic corneal endothelial cells.

Our experts in mucosal vaccine delivery have established in vitro and in vivo models to assess the activity of adjuvants and vaccine formulations on innate and adaptive immune cells, as well their capacity to stimulate different effector mechanisms of clearance.

Naïve T cells then expand and differentiate into effector T lymphocytes that acquire either cytotoxic activity or secrete high amounts of certain cytokines.

The HZI will develop a vaccination protocol for mucosal administration based on three novel strategies: (i) development and optimization of a vaccination protocol in which parenterally - primed T and B cells are subsequently pulled into the mucosa by the local delivery of the cognate antigen to the requested effector site, (ii) testing the co-administration of antigens with novel mucosal adjuvants using different mucosal immunisation routes and schedules, and (iii) testing various nanoparticles co-administered with different immunomodulators for their ability to generate both systemic and mucosal immune responses following transcutaneous / trans - follicular vaccination.

We suggest three novel strategies: (i) Develop and optimise a prime - pull protocol in which parenterally - primed T and B cells are subsequently pulled into the mucosa by the local delivery of the cognate antigen to the requested effector site.

These include examinations of the effect of antigen structure on the spectrum of cytokines produced after either in vivo or in vitro stimulation, as well as the ability to anergize Vα14 iNKT cells in terms of cytokine production and effector function by prior antigen challenge.

They include reduced lymphocyte repertoire, increasing clonality and increasing autoreactivity.5, 7,8 Recent work has focused on intrinsic cell defects, which alter T cell activation threshold, induction of cellular senescence and differentiation into short - lived effector or long - lived memory cells.

Spleen cells (3 × 107) from either experimental or control effector lymphocytes were dispensed into 75 - cm2 tissue culture flasks along with 20 ml of boosting medium and 6 × 105 γ - irradiated (3,000 rad) BALB / c spleen cells (erythrocytes lysed).

Therefore, in both mice and non-human primates, HO - 1 inducers delivered locally inhibited effector T - cells in an antigen - specific manner, paving the way for repositioning these drugs for the treatment of immune - mediated diseases.

Whereas acute CD8 + T cell effector responses are enhanced in DGKζ - deficient mice postinfection with intracellular pathogens, persistent memory formation is impaired, most dramatically when both DGKζ and DGKα, the other isoform of DGK that metabolizes DAG downstream of the TCR in T cells, are deleted (35, 36).

Graphs show the frequency of IFN - γ effector CD8 + T cells.

DKO mice, however, have a decreased percentage of memory precursor cells and an increase in short - lived effector cells compared with WT mice.

We have shown that invariant Natural Killer T cells (iNKT), a subset of CD1d - restricted T cells displaying innate effector functions, rewire the prostate cancer microenvironment leading to cancer control.

The things that we have demonstrated — such as the fact that the vertical nanowires can deliver any biological effector to any cell type in a spatially selected fashion — have drawn interest from many different people, and we have been working with stem cell institutes and others to demonstrate the unique utility of this particular platform.

Apoptosis has been implicated as a T cell - dependent immune effector mechanism in various forms of organ graft rejection (29 — 31).

We have also have adopted a number of lines of study into the regulation of cytokine production and effector cell responses such, as cytotoxicity, in the response of Vα14 iNKT cells to glycolipid antigens or IL - 12 from activated DCs.

Although similar numbers of total splenic gp33 - LCMV — specific T cells were observed between genotypes (Fig. 5B), the distribution of gp33 - LCMV — specific CD8 + T cell effector and memory subsets were altered, such that there was a significantly lower percentage of short - term effector T cells and reciprocal changes in memory precursor cells among gp33 - specifc CD8 + T cells in WT relative to DKO mice (Fig. 5C), with a trend in changes in absolute cell numbers, consistent with temporal data from peripheral blood (Fig. 5A).

Deletion of DGKζ from T cells results in prolonged TCR signal transduction downstream of DAG, resulting in enhanced activation of Ras, increased effector T cell proliferation, and amplified cytokine production, which leads to increased antitumor activity against s.c. implanted EL4 tumors or murine mesothelioma (12, 16, 17).

Of special interest were ICOS, whose «role in effector T cell responses and anti-tumor immune responses is now well established,» and CD40, which is «important for the maturation of antigen - presenting cells and for enabling T cell co-stimulation.&raquOf special interest were ICOS, whose «role in effector T cell responses and anti-tumor immune responses is now well established,» and CD40, which is «important for the maturation of antigen - presenting cells and for enabling T cell co-stimulation.&raquof antigen - presenting cells and for enabling T cell co-stimulation.»

Consequently both effector cells can operate in tandem, with NK cells providing a first line defense killing target cells that escape CTL recognition or show inadequate expression of self - MHC 142.

Strength of PD - 1 signaling differentially affects T - cell effector functions.