Articles tagged with T Cell Activation
A team of POSTECH and ImmunoBiome has discovered a dietary-derived bacterial strain, IMB001, that induces nutritional immunity and boosts anti-tumor responses. The strain works by skewing tumor-infiltrating macrophages toward an inflammatory phenotype, leading to increased cell death of rapidly multiplying tumor cells.
Researchers found that ARID1A mutation renders tumors sensitive to immunotherapy by triggering an antiviral immune response. This could lead to improved patient outcomes and the development of targeted therapies.
Researchers at La Jolla Institute for Immunology have developed a new, rapid method to study phosphorylation and other post-translational modifications in immune cells. This method sheds light on signaling pathways that trigger T cell activation and reveals how phosphate groups direct specific gene expression responses.
Researchers found that STAP-1 plays a crucial role in activating T cells, which are white blood cells critical to defending against infections and maintaining overall health. The study suggests that STAP-1 may be involved in the development of immune disorders such as multiple sclerosis and asthma.
A new type of cell therapy has shown promising results in improving survival rates and reducing pneumonia among critically ill ARDS patients recovering from severe Covid-19. The invariant natural killer T (iNKT) cell therapy, known as agenT-797, triggered an anti-inflammatory response and activated anti-viral immunity.
Researchers found that vaccinated B cell-deficient individuals have a robust T cell response to SARS-CoV-2, despite lack of anti-spike antibodies, resulting in markedly reduced rates of hospitalization and severe COVID-19. This study provides reassuring evidence for immunocompromised patients to get vaccinated.
Researchers discovered an alternative immune response involving NK and CD4+ T cells that can recognize and attack cancer cells when the usual recognition marker B2M is missing. This finding holds potential for developing more effective combination cancer immunotherapy treatments.
Researchers at UChicago find that trans-vaccenic acid (TVA), a fatty acid in meat and dairy, enhances CD8+ T cell immunity against tumors. TVA also improves response to immunotherapy treatments for patients with higher levels of the nutrient in their blood.
A research team from the University of California - Davis Health has identified a crucial epitope on the CD95 receptor that can trigger programmed cell death in cancer cells. This finding could lead to improved cancer treatments and potentially enhance CAR T-cell therapy for solid tumors like ovarian cancer.
Researchers discovered a membrane protein, CMTM6, that stabilizes CD58 and PD-L1, enhancing T cell activation and improving immune response against tumors. The findings suggest CMTM6 could be a key player in shaping the response to immunotherapies.
Researchers at Karolinska Institutet have found that weightlessness affects T cells in astronauts' immune systems, making them less effective at fighting infections. The study's results could lead to new treatments for reversing these changes.
Researchers developed a new strategy for T-cell-based immunotherapy using aptamers, which directly activates immune cells against cancer cells without genetic modifications. The innovative regulatory circuit establishes an artificial interaction between T cells and cancer cells.
Researchers discovered cytoplasmic retinoic acid receptors, such as RARalpha, are essential for T cell linking sensing at the cell surface with downstream signaling cascades and gene expression programs. The study sheds new light on TCR signaling and its connection to cancer treatment.
Scientists at UAB identify a cell-surface marker that distinguishes PD-1+CXCR5+CD4+ T cells destined to become GC-Tfh cells from those becoming long-lived memory CXCR5+CD4+ T cells. The study reveals the critical role of c-Maf in the transition step from pre-Tfh to GC-Tfh cell differentiation.
Researchers have found that gut health is the main determinant of systemic inflammation and disease progression in HIV. By targeting the root cause of problems, therapies may be able to slow the progression of the virus by preserving gut integrity.
Researchers found that CD4+ T cells initiate fat wasting, while CD8+ T cells induce muscle wasting, which surprisingly helps the mice fight infection and survive. The study sheds light on the complex relationship between immune cells and wasting responses.
A novel biomaterials-based approach enhances adoptive T cell therapy with cancer vaccine technology, providing strong and long-lasting effects against solid tumors. In mice carrying melanomas, SIVET enables fast tumor shrinking and long-term protection.
Researchers at University of Bristol found that Long Covid is not caused by an immune inflammatory reaction to COVID-19. Instead, persistent immune activation and inflammation may persist for months after COVID-19, correlating with severe disease. The study suggests a new direction for understanding and potentially treating this debili...
Scientists found that CXCL13-mediated recruitment of B cells helps predict response to immunotherapy treatment. This cooperation between T cells and B cells is associated with improved survival in patients treated with immunotherapy.
A study published in Cell Reports found that saturated fatty acids promote the immune escape of oral cancers in mouse models. Obesity helps establish a type of tumor microenvironment that promotes tumor progression by suppressing STING-type-I interferon pathway and NLRC3.
Researchers found that T cells can self-activate by puckering their cell membrane, boosting function and slowing tumor growth in a mouse model. This discovery could inspire new anti-tumor therapeutics and provide insights into treating autoimmune diseases.
A new study finds that rare helper T cells called Th9 can drive allergic disease and may hold the key to precision medicine approaches for treating severe allergies. Th9 cells are activated by specific transcription factors and can produce inflammatory cytokines without antigen stimulation.
A study published in Communications Biology suggests that gut bacteria's digestion of fucose sugar may be behind weaker immune responses to the COVID-19 mRNA vaccine. Individuals with lower T-cell responses had higher expression of genes FOS and ATF3, which are part of a larger group controlling T-cell survival and activity.
Research suggests that high doses of sucralose can lower activation of T-cells, an important component of the immune system, in mice. This finding could lead to a new way of using sucralose therapeutically to help dampen T-cell responses in patients with autoimmune diseases.
Researchers discovered over 500 non-canonical protein-derived peptides that could be recognized by T-cells, but found no spontaneous immune response. Three novel T-cell receptors were identified for specific non-canonical HLA-I tumor ligands with promising tumor specificity.
Researchers found that immunotherapy can activate tumor-fighting T cells in nearby lymph nodes, potentially boosting efficacy against solid tumors. The study suggests leaving lymph nodes intact until after immunotherapy could improve treatment outcomes for patients with head and neck cancers.
Researchers discovered polyphenol PCB2DG reduces inflammatory responses by inhibiting glutamine uptake in CD4+ T cells, promoting gene expression to synthesize amino acids. The study's findings offer potential for dietary polyphenol treatment of autoimmune diseases.
Researchers discovered that combining ferroptosis induction with immune checkpoint inhibition reduces liver tumour growth and metastases, offering a promising new approach for treating liver cancer
Researchers have discovered that cancer patients who don't respond to immunotherapy often lack CD5+ dendritic cells, which are essential for effective T cell activity. Boosting these cells may help more patients benefit from immunotherapy.
Researchers at H. Lee Moffitt Cancer Center & Research Institute discovered a new way to activate dendritic cells, which can produce strong anti-tumor immunity. The approach uses an oncolytic virus expressing CD40 ligand and IFNβ, reducing tumor size and activating immune cells in patients with non-small cell lung cancer.
Researchers from Tokyo University of Science discovered β-damascone, a natural aroma compound found in rose fragrance, modulates dendritic cell functions and reduces inflammatory cytokine production. The study showed β-damascone inhibits antigen-dependent activation and Th1 cell development, as well as ear inflammation in mice models.
Researchers at Uppsala University developed a prognostic method using a combination of immune cells to provide clearer disease prognoses and predict which patients will respond best to immunotherapy. The method was shown to be associated with patient fate in several types of cancer.
A team of scientists led by Thomas Blankenstein presents a mechanism that prevents the immune response from overshooting its mark. The KRKR motif, a short sequence of four amino acids, is crucial in binding to connective tissue and preventing interferon-gamma from spreading throughout the body.
Researchers have discovered that inhibiting conventional signalling pathway by disrupting LCK allows more efficient tumour cell killing, using FYN protein instead. This approach enhances T-cell function and reduces graft-versus-host disease, making CAR-T therapy more accessible to patients.
Researchers developed a new way to increase vaccine potency by changing the structural location of antigens and adjuvants. This approach, called 'rational vaccinology,' allows for precise dosing and tailored presentation of vaccine components, leading to improved immune response and cancer cell targeting.
Researchers from Nara Institute of Science and Technology found that alveolar macrophages act as antigen-presenting cells to prime CD8+ T cell expansion in the lungs. This process involves the production of interleukin 18, leading to the development of resident memory-type cell populations.
A Northwestern University study found that as people age, their cerebrospinal fluid immune system becomes dysregulated, leading to cognitive impairment and neurodegeneration. The discovery provides a new clue to the process of neurodegeneration and may potentially be used to treat inflammation of the brain.
Researchers at UNIGE and LMU discovered that immune system's anti-tumour activity peaks in the morning. Tumours implanted at night grew faster than those implanted in the afternoon. Administering immunotherapy treatments early morning significantly enhanced their effectiveness, suggesting a new strategy for cancer treatment.
Scientists conducted whole-body PET scans using a radioactively labeled antibody tracer against CD8+ T-cells before and after starting immune checkpoint inhibitors. The results showed heterogeneous and dynamic responses among patients, revealing the complexity of the immunotherapy response.
Researchers have discovered a way to predict the course of ALS by measuring immune cells in cerebrospinal fluid. A high proportion of effector T cells is associated with low survival rates, while activated regulatory T cells indicate a protective role against rapid disease progression.
Researchers identified specific immune cells driving deadly heart inflammation in cancer immunotherapy patients, and found that CD8 T cells target the heart muscle. The study's findings have led to investigations into preventing or treating this form of myocarditis, a common but fatal side effect of ICIs.
The study found that protein kinase CK2 plays a key role in regulating CD8+ T cell activation, metabolic reprogramming and differentiation during infection by the intracellular pathogen Listeria monocytogenes. In mouse models, deletion of the CK2α catalytic subunit impaired CD8+ T cell function.
Researchers found that immune checkpoint blockade therapy may be beneficial for certain cases of severe COVID-19. In pre-clinical trials, treatment with a PD-1 inhibitor restored T cell functionality and reduced inflammation in mice infected by MHV-A59, another betacoronavirus.
A new study found that the organization of different types of immune cells within pancreatic tumors is associated with patient outcomes. Immune cells called IL-10+ myelomonocytes tend to be located close to specific T cell types, which may affect cancer treatment responses.
A new study found that a protein called apoptosis inhibitor five (API5) protects most people with the mutation linked to Crohn's disease from developing the illness. Norovirus infection blocks API5 production in mice with Crohn's, killing gut-lining cells and tipping the balance towards autoimmune disease.
Researchers have discovered the molecular mechanism that controls MR1, a protein responsible for alerting white blood cells to bacterial infections or cancer. By regulating MR1's activation, the immune response can be stimulated or inhibited, offering new potential for harnessing and controlling immunity.
Researchers captured first image of antigen-bound T-cell receptor complex with bound antigen at atomic resolution. The study reveals no significant structural changes in the receptor after antigen binding, sparking further investigation into the signaling pathway activation mechanism.
A recent international study has shed light on the inner workings of the adaptive immune response, revealing how killer T cells recognize viral invaders using molecular road signs. The study highlights the crucial role of chaperones in ensuring the stability and longevity of these road signs, allowing for more effective detection and d...
Researchers developed a rapid blood assay that measures the magnitude and duration of immunity to SARS-CoV-2, allowing large-scale monitoring of population immunity. The test takes less than 24 hours to perform and is scalable to use broadly in the population.
Researchers identified 127 genes associated with immune diseases, providing new insights into the sequence and timing of gene activity during T cell activation. The study used single-cell RNA sequencing technology to map the timing of gene activity for each cell subtype in the T cell activation process.
A new study by University of Southampton researchers found that a third COVID-19 vaccination improves immune responses in blood cancer patients. The study showed that 92% of patients without recent anti-CD20 treatment had improved antibody responses after the third dose.
In an animal study, researchers created an implantable biotechnology called MASTER that produces and releases CAR-T cells for attacking cancerous tumors. This technology reduces the manufacturing time from weeks to hours, increasing efficiency and effectiveness.
Researchers discovered a link between the immune system and microbiome in primary sclerosing cholangitis (PSC), a liver disease associated with inflammatory bowel disease. MAIT cells activated by bile-derived pathogens could play an important role in PSC pathophysiology, offering potential new treatment implications.
Researchers found that sequencing drug combinations can enhance the anti-tumor immune response in liver cancer, potentially reducing toxic drug exposure. The new strategy primes the tumor with an immune checkpoint inhibitor before using a multikinase inhibitor, enhancing its effectiveness.
A team of researchers at MedUni Vienna's Center for Physiology and Pharmacology has discovered a key building block in immune cells that promotes immunotolerance and prevents T-cell attacks on the body's own tissues. The study suggests a potential new cell-based therapeutic approach to slow down autoimmune disease progression.
Researchers used identical twins to exclude genetic influences and track immune system changes responsible for triggering multiple sclerosis. The study found that an error in the communication of immune cells leads to greater activation of T cells, causing damage in the central nervous system.
A new study found that calorie restriction improves metabolic and immune responses, generating more T cells to fight off infections and improve energy efficiency. This could lead to a potential treatment to reduce age-related inflammation and improve metabolic health.
Researchers mapped how HTLV-1 transforms T-cells into cancerous cells, revealing the virus over-activates them and makes them more vulnerable to DNA damage. This study provides new directions for potential treatments to prevent cancer development.
A novel approach may reduce the serious adverse effect of cytokine release syndrome associated with chimeric antigen receptor (CAR) T-cell therapy. Supressing interferon gamma (IFNγ) appears to prevent activation of macrophages and other immune cells that drive the syndrome without impacting CAR T-cell efficacy.
Researchers developed nanoparticles that activate key cancer fighters by driving up immunity at the tumor site, improving interactions with antibody therapies. The technique left six of 10 mice with lymphoma tumor-free and was effective in melanoma when combined with existing immune response amplifiers.