Our findings show that two fragments of alpha - synuclein, a protein that accumulates in the brain cells of people with Parkinson's, can activate
the T cells involved in autoimmune attacks.
Not exact matches
The trial
involved an experimental checkpoint inhibitor from Bristol - Myers Squibb called ipilimumab (now marketed as Yervoy)-- whose aim was to release the molecular brakes on her own army of
T cells.
Basically, CAR -
T therapy
involves taking a patient's own immune «killer»
T -
cells, inserting new genetic code into those
cells which turn them into cancer - hunters that can home in on malignant B -
cells (another kind of immune
cell), and then pumping these specialized leukemia - busting
cells back into the patient.
In clinical trials the treatment — which
involves extracting individual patients» immune
T -
cells, modifying them to seek out tell - tale biological markers associated with blood cancers like aggressive lymphoma, and then pumping those modified killer
cells back into the body — has shown major promise, in some cases eliminating all signs of the cancer in patients six months after treatment.
Those two companies, along with their larger competitor Novartis (nvs), are developing experimental chimeric antigen receptor
T -
cell (CAR -
T) technology platforms, which are highly personalized treatments that
involve extracting patients» immune
cells, re-engineering them to target their specific cancers, and then pumping these sniper -
cells back into the body.
The novel treatment space
involves transforming a patient's own immune
T -
cells into cancer - busting weapons.
Bellicum is among the flurry of biotechs investing heavily into
cell therapies such as experimental chimeric antigen receptor
T -
cell (CAR -
T) treatments for cancer (this is the next - gen treatment that
involves reprogramming immune
cells to become cancer killers and has shown promise in blood cancers, which Bellicum specializes in).
Regulators noted that they will require special training for anyone
involved in delivering this therapy, while expanding the approval of Actemra (tocilizumab) to treat CAR
T -
cell - induced severe or life - threatening CRS in patients 2 years of age or older.
CAR -
T approaches
involve reengineering
T -
cells to find and destroy cancer
cells, but that process can cause cytokine release syndrome (CRS), a life - threatening immune response NantKwest hopes to sidestep.
The research
involved using novel technologies to examine the
T cells in human tissues.
Although the researchers emphasized that laboratory results
involving cell lines and mice do not necessarily translate to human treatment, they say their findings show that new mTOR inhibitors combined with chemotherapy could become a new treatment strategy for
T - ALL.
In the meantime, the MUSC team, led by Yu, will continue their work and try to extend the current findings by investigating how other miRs may be
involved in regulating
T - and B -
cell function during allogeneic BMT.
Oral immunotherapy for peanut allergy induces early, distinct changes in immune
T -
cell populations that potentially may help researchers determine which people will respond well to the therapy and which immune mechanisms are
involved in the response, a new study suggests.
«So, we not only found a new mechanism for cGVHD development by demonstrating that this miR -17-92 is heavily
involved in the
T - and B -
cell responses that lead to cGVHD, but we also found that blocking miR - 17 substantially reduced cGVHD symptoms in mice.
The work «implicates this regulatory
T cell as being
involved in atherosclerosis,» says Alan Daugherty, head of the cardiovascular research center at the University of Kentucky in Lexington.
The first key experiment
involved removing a specific subset of activated
T -
cells from mouse models.
With chronically infected mice as their model, the researchers used a new technology called ATAC - seq to map the regulatory regions of the genome — the sections of DNA
involved in switching genes on and off — in the animals» exhausted and functional CD8 +
T cells.
'' (
T) he immune response
involves reprogramming the entire
cell and also often the entire plant,» Cann said.»
To address such obstacles, Roybal, now an assistant professor at the University of California, San Francisco and his colleague Leonardo Morsut turned to a signaling molecule on
T cells called the Notch receptor, known to be
involved in several developmental and biological processes.
TB is known for trying to block activation of
T cells by infected dendritic
cells, two kinds of which are primarily
involved in fighting infection: dendritic
cells that migrate from the lungs to the lymph nodes, and those that already reside in the lymph nodes.
The researchers are now looking at how ICOS signals can be altered to diminish autoimmune disorders and augmented for more effective vaccine development, and are beginning research on how ICOS signaling may benefit Chimeric Antigen Receptor -
T cell (CAR -
T) therapies, which
involves engineering of patient's own immune
cells to recognize and attack their cancers.
Indeed, when mice lacking the gene for making IL - 4 take the water maze test, they do badly, perhaps because their
T cells lack a critical signal
involved in fast learning.
Many different
cells are
involved in the complex processes: skin
cells (keratinocytes) and
cells of the immune system, among others
T lymphocytes, macrophages, mast
cells and others.
On top of the
T cell abnormalities, chronic GVHD
involves antibody - producing B
cells and scavenger
cells called macrophages.
John Rossi, a molecular biologist at the Beckman Research Institute in Duarte, Calif., who was not
involved in the research, noted that from his own work, using RNAi to treat
T cells may allow patients to significantly reduce the dosage of the anti-HIV drugs — up to 100-fold.
Severe disease is thought to result from immunopathogenic processes
involving serotype cross-reactive antibodies and
T cells that together induce vasoactive cytokines, causing vascular leakage that leads to shock.
A unique approach to targeting the abnormal
T -
cells that cause
T -
cell lymphomas could offer hope to patients with the aggressive and difficult - to - treat family of cancers, finds a study
involving researchers from Cardiff University.
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.
New blood cancer breakthroughs — including several
involving CAR
T cell therapy — were announced by City of Hope physicians at the American Society of Hematology (ASH) annual meeting in Atlanta.
The present findings are derived from studies using CD4KO mice and thus, raise the question as to whether the CD4 +
T cell - independent immune mechanisms in CD4 KO mice differ from those
involved in corneal allograft rejection in wild - type mice whose CD4 +
T cells population have been depleted with monoclonal antibodies.
In CD4 KO mice,
T cell - independent rejection can
involve either CD8 + or CD8 −
T cells.
T -
cell therapy
involves genetically re-engineering a type of the patient's own disease - fighting white blood
cells, called
T -
cells, to fight cancer.
«This immunosuppressive tumor microenvironment
involves CD4 + and FoxP3 +
cells that represent a regulatory
T -
cell population.
A Marked Reduction in Priming of Cytotoxic CD8 +
T Cells Mediated by Stress - Induced Glucocorticoids
Involves Multiple Deficiencies in Cross-Presentation by Dendritic
Cells.
That approach targets the PD - 1 protein, which is
involved in a complex process that prevents the immune system's
T -
cells from attacking cancer.
Identification of human
T cell leukemia virus type 1 tax amino acid signals and cellular factors
involved in secretion of the viral oncoprotein.
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.
In one study
involving nineteen patients, Coukos found that one - third had
T cells in their blood that recognized their tumors.
The approach is very unique and
involves targeting the chemokine molecule CCR5 in patient's
T -
cells by ZNFs.
CAR -
T immunotherapy
involves genetically outfitting a patient's immune
cells with a new artificial gene, a chimeric antigen receptor (CAR), which allows the
cells to recognize and attack specific cancer
cells.
His plans for research in his own lab
involve «continuing to look at the mechanisms of
T cell dysfunction in human and mice.
«We knew that TET proteins were
involved in human cancer but we didn'
t know how they regulated
T cell development,» says Angeliki Tsagaratou, Ph.D., an instructor in the Rao lab and the study's first author.
Clinical trials
involving CAR -
T cells have offered cancer patients who have exhausted traditional chemotherapy treatment options a new lease on life.
T cells exert their actions in two ways, either through direct
cell -
cell contact which
involves transmembrane proteins present on both the
T cell and interacting
cell, or by the secretion of soluble proteins termed cytokines which have receptors on many lymphoid and some non-lymphoid
cell types.
This finding recapitulated the features of many human blood cancers, including those
involving T cells, in which TET2 is often mutated or lost.
Allogeneic
cell therapies
involving primary
cell types such as bone marrow mesenchymal stromal / stem
cells (BM - MSCs), hematopoietic stem and progenitor
cells (HSPCs), and
T and natural killer (NK)
cells for immunotherapy applications are especially challenging because of the vigorous process of screening...
GVHD is an immune - mediated disease in which donor
T cells recognize and attack the histocompatibility - disparate recipient; it
involves multiple organs, such as the lung, liver, intestinal tract, and skin (2 — 4).
This is in accordance with previous reports that decitabine and 5 - azacytidine produce a marked synergistic effect in combination with suberoylanilide hydroxamic acid and romidepsin in
T - lymphoma
cell lines by modulating
cell cycle arrest and apoptosis.26, 27 As a mechanism of action, KMT2D mutations of B - lymphoma
cells promote malignant outgrowth by perturbing methylation of H3K4 that affect the JAK - STAT, Toll - like receptor, or B -
cell receptor pathway.28, 29 Here our study indicated that dual treatment with chidamide and decitabine enhanced the interaction of KMT2D with the transcription factor PU.1, thereby inactivating the H3K4me - associated signaling pathway MAPK, which is constitutively activated in
T -
cell lymphoma.13, 30,31 The transcription factor PU.1 is
involved in the development of all hematopoietic lineages32 and regulates lymphoid
cell growth and transformation.33 Aberrant PU.1 expression promotes acute myeloid leukemia and is related to the pathogenesis of multiple myeloma via the MAPK pathway.34, 35 On the other hand, PU.1 is also shown to interact with chromatin remodeler and DNA methyltransferease to control hematopoiesis and suppress leukemia.36 Our data thus suggested that the combined action of chidamide and decitabine may interfere with the differentiation and / or viability of PTCL - NOS through a PU.1 - dependent gene expression program.
One of these modifications, O - GlcNAc, is known to be
involved in the activation of
T cells; however, its function on most glycoproteins remains unknown due to difficulty in characterizing and mapping O - GlcNAc sites.
Nodal Involvement By Marginal Zone B -
Cell Lymphoma Harboring
t (14; 22)(q32; q11)
Involving Immunoglobulin Heavy Chain and Light Chain Lambda as the Sole Karyotypically Recognizable Abnormality in a...