Rather, each tumor contains a small
subset of cells with stem cell - like capacities that are responsible for initiating and sustaining tumor growth, while the bulk of the tumor cells lacks this ability.
Not exact matches
The new findings build on prior research from the Dhodapkar lab demonstrating that patients
with Gaucher disease, an inherited lipid storage disorder, have a significant increased risk for developing myeloma; and the discovery
of a
subset of lipid - reactive immune
cells, called type II NKT - TFH, that promote the development
of plasma
cells.
«Starting
with our
cell model that mimics human pancreatic cancer progression, we identified released proteins, then tested and validated a
subset of these proteins as potential plasma biomarkers
of this cancer,» Zaret said.
It indicates that the interaction
with mitochondria is driven by Toxoplasma, rather than the host
cell, and it is likely something the parasite does «to enable survival in some particular
subset of hosts,» he says.
Treating the mice
with antibodies against CD4 + T -
cells four weeks after experimental heart attacks — to deplete that
subset of T -
cells — prevented the progressive abnormal enlargement
of the left ventricle that leads to heart failure, as compared
with untreated mice.
Indeed, when Blanpain and his colleagues examined mice
with squamous
cell carcinoma, a malignant outgrowth
of the papilloma, they found that most
of the
cells were actively dividing, not just a small
subset of stem -
cell - like
cells.
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.
Simultaneous T
cell antigen receptor (TCR) analysis in single
cells and bulk
subsets revealed that CD4 - TEMRA
cells show marked clonal expansion compared
with TCM and TEM
cells and that most
of CD4 - TEMRA were dengue virus (DENV)-- specific in donors
with previous DENV infection.
The treatment
with the engineered immune
cells, called CAR - T
cell therapy, may work even better if doctors transplant a
subset of immune
cells known as memory T
cells, researchers reported February 14...
To confirm that the missing mutations were important for generating an immune response, the researchers cultured a
subset of the neoantigen protein fragments containing the tumor mutations
with immune
cells taken from three patients» blood samples.
- In a study
with potentially major implications for the future treatment
of autoimmunity and related conditions, scientists from the Perelman School
of Medicine at the University
of Pennsylvania have found a way to remove the
subset of antibody - making
cells that cause an autoimmune disease, without harming the rest
of the immune system.
Now, researchers have found that a very small
subset of anti-viral immune
cells, transplanted along
with a donor's blood stem
cells, could be enough to fight and even prevent the disease caused by CMV, in research conducted in mice and published Jan 16th in the Journal
of Immunology.
The team discovered that a certain
subset of cartilage - making
cells, known as chondrocytes, replicate themselves, make other bone
cells and drive bone growth — findings that could lead to new treatments for children
with facial deformities who normally have to wait until adulthood for corrective surgery.
Additional experiments
with transgenic mice indicated that L1 had hopscotched in a
subset of brain
cells, but not in the
cells of most other tissues.
Regulatory T
cells (Tregs) are a unique
subset of CD4 + T
cells with immunosuppressive properties.
Another unconventional T
cell subset with some features
of innate immune
cells is the intestinal intraepithelial lymphocytes (IEL) that express CD8αα homodimers, but neither CD4 nor CD8αβ.
These studies have given us a better understanding
of the genes that influence the development
of these
cells, and in particular, to characterize the differences between
subsets of Vα14i NKT
cells with distinct functional properties.
Smaller
subsets of T
cells are reactive toward various nonpeptidic ligands associated
with nonpolymorphic MHC class - Ib (MHC - Ib) molecules.
Together
with the more studied regulatory T
cells (Tr1 and CD25 + FOXP3 + Treg), growing evidence indicates that different
subsets of dendritic
cells (DC), play a critical role in promoting immune tolerance.
Our laboratory has assembled a comprehensive set
of tools for doing this, including mice
with conditional ablation
of the Btla gene in different
subsets of immune
cells.
In this review, after a summary on the known innate CD8 (+) T -
cell features in the mouse, we propose Eomes together
with KIR / NKG2A and CD49d as a signature to standardize the identification
of this innate CD8 (+) T -
cell subset in humans.
New research from La Jolla Institute for Allergy and Immunology lays the groundwork to parse how the virus interacts
with its host and causes disease by pinpointing CD8 + T
cells, a
subset of T
cells more commonly known as cytotoxic or killer T
cells, as important gatekeepers that control Zika infection or limit the severity
of disease.
Scientists from the Sundrud lab have identified a normally small
subset of immune
cells that may play a major role in the development
of Crohn's disease as well as steroid resistance associated
with the disease.
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).
Notably, both in hphep
cells and enhanced hiPS - HEP cultures, only a
subset of hepatocytes is strongly stained for glycogen storage — again in agreement
with the metabolic zonation observed in the liver lobe (Figure 3, Panel A).
Notably, both in hphep
cells and the enhanced hiPS - HEP cultures, only a
subset of hepatocytes is strongly stained for glycogen storage (shown by Periodic acid - Schiff staining, below)-- again in agreement
with the metabolic zonation observed in the liver lobe.
The team has therefore proposed a new taxonomy for EECs based on their expression profile data,
with many new
subsets of hormone - producing
cells.
Interaction
of human mesenchymal stem
cells with cells involved in alloantigen - specific immune response favors the differentiation
of CD4 + T -
cell subsets expressing a regulatory / suppressive phenotype.
With their deep expertise in the biology
of senescent
cells, the Campisi lab will be focused on fundamental research into questions like how senescent
cells vary in their susceptibility and resistance to immune clearance (depending on factors like their tissues
of residence or the pathway that led them into senescence); the targets and mechanisms used by NK
cells to clear senescent
cells; and why
subsets of senescent
cells might persist when their similarly - situated neighbors are cleared out (and what might allow us to overcome that resistance).
«We noticed that tumors
with elevated beta - catenin lacked a
subset of dendritic
cells known as CD103 +,» said co-author Stefani Spranger, PhD, post-doctoral fellow in the University
of Chicago's Department
of Pathology.
(14,15)-RRB- have found age - related satellite
cell attrition consistent
with the senescence
of a
subset thereof; moreover, one such study (15) reported that decreases in the number and quality
of satellite
cells with aging are reliably associated
with elevated expression
of p16Ink4a (contrary to (14)-RRB-, and
with secretory and proteomic abnormalities consistent
with a rising burden
of senescent
cells.
iTeos focuses upon selected key suppressive mechanisms
of immunity in cancer based on gene expression, association
with immune
cell subsets, protein expression in human tumors and biological validation.
The fundamental impact
of this research will be greater insight into whether infection and vaccination lead to expansion or contraction
of subsets already present within the individual's T
cell pool that maintain their phenotype, and / or lead to differentiation or activation
of T
cells into states uniquely associated
with those conditions.
A Small Case Series
of Intravascular Large B -
Cell Lymphoma
with Unexpected Findings:
Subset of Cases
with Concomitant Extravascular Central Nervous System (CNS) Involvement Mimicking Primary...
In most cases, there was no evidence
of dopaminergic
cell death in the substantia nigra,
with the exception
of one
of the more recent studies that observed it in a
subset of DJ - 1 − / − mice (Rousseaux et al., 2012).
High - resolution maps
of enhancer - promoter interactions in rare primary human T
cell subsets and coronary artery smooth muscle
cells link variants associated
with autoimmune and cardiovascular diseases to target genes.
These include: a) Global Clusters that consist
of a small, tight
subset of genes that are co-expressed under the entire spectrum
of experimental conditions; b) Time Series
of gene expression profiles during successive days
of standard ES
cell differentiation; c) Specific Gene Classes based on hierarchical clustering
of transcriptional factors and ESTs; d) Expression Waves
of genes
with characteristic expression profiles during ES
cell differentiation, juxtaposed to waves
of genes that behave in the exact opposite way; e) Pathway Animations that illustrate dynamic changes in the components
of individual KEGG signaling and metabolic pathways viewed in time - related manner; and, f) Search Engines to display the expression pattern
of any transcript, or groups
of transcripts, during the course
of ES
cell differentiation, or to query the association
of candidate genes
with various FunGenES database clusters.
Having been excited by the potential
of retroviral gene transfer as a therapeutic, it has been a fascinating opportunity to get to grips
with the various processes in the lab; particularly more recently when I have spent time working independently to optimise the process in various
cell subsets.
Under the guidance
of a world - renowned cancer biologist, Robert Weinberg, Ph.D., Lu is focusing on how metastatic breast cancer
cells interact
with a
subset of immune
cells called macrophages, which normally are capable
of engulfing — literally eating — infected, damaged, or cancerous
cells.
After 4 weeks
of differentiation, the majority
of the
cells (> 60 %) expressed the postmitotic neuronal marker β - III tubulin
with a
subset (about 50 %
of total neurons) additionally expressing TH, a marker for midbrain dopaminergic neurons (Fig. 3A — D).
Shultz LD, Saito Y, Najima Y, Tanaka S, Ochi T, Tomizawa M, Doi T, Sone A, Suzuki N, Fujiwara H, Yasukawa M, Ishikawa F. Generation
of functional human T -
cell subsets with HLA - restricted immune responses in HLA class I expressing NOD / SCID / IL2r ɣnull humanized mice.
There it correlates
with gene repression, but likely only in distinct
subsets of cells within each organ, (see Schultz et al., 2015).
These
cells, along
with dendritic
cells, recognize the incoming undigested food particles, toxic agents, and bacterial components as foreign invaders, and present them to
cells of the adaptive immune system called T and B lymphocytes, leading to clonal expansion (proliferation or multiplication
of specific
subsets of T and B
cells) and recruitment
of more pro-inflammatory immune
cells to the gut through a process called leukocyte homing.
This
subset of scales from the FES and their composite score has been used
with families
of children
with asthma, diabetes, juvenile rheumatoid arthritis, recurrent abdominal pain, sickle
cell disease, and those undergoing bone marrow transplant (BMT).