Articles tagged with Cytotoxic T Cells
A team of Kyoto University researchers found that exposure to high-fat diets induces persistent metabolic stress in killer T cells, but also discovered a pathway for protection through purine metabolism. By recycling xanthine, killer T cells can produce antioxidants to boost their ability to fight tumors.
Active aldehydes promote toxic lipid peroxidation, impairing FAO and activating glycolysis in killer T cells, accelerating exhaustion. This vicious cycle exacerbates T cell differentiation and dysfunction.
Researchers from Prof. Yardena Samuels's lab developed a new approach to cancer treatment by manipulating cancer cells to produce dozens of suspicious proteins, leading to a powerful immune response that destroys human cancer cells and slows tumor growth in mouse models.
Scientists at UCSF have developed engineered T cells that act as immune referees to soothe overreacting immune responses and mope up inflammatory molecules. These cells could improve treatment for organ transplants, type 1 diabetes and other autoimmune conditions by reducing the need for harsh immunosuppressant drugs.
Scientists have created a living cell therapy that can navigate to specific organs using a
Researchers developed HPV16 peptide microspheres to induce specific cytotoxic T lymphocytes, leading to tumor regression in cervical cancer models. The approach combines peptide-based vaccinations with microsphere technology to enhance immune responses and eliminate tumor cells.
Researchers from Osaka University discovered that the GPR31 receptor in gut surveillance cells detects bacterial metabolites and triggers immune responses, which could lead to new drug developments and probiotic treatments. The study also found that these receptors play a key role in the immune response to gut infections in humans.
A new Finnish study from University of Turku shows that already a 30-minute exercise can increase the proportion of tumor-killing white blood cells in the bloodstream of breast cancer patients. The amount of several different white blood cell types increased during exercise, with cytotoxic T cells and natural killer cells rising the most.
Researchers at The Jackson Laboratory discovered a cascade of molecules that help coordinate the attack of cytotoxic T-cells on tumors. Elevated levels of IL-3 reenergize these cells, signaling them to resume detecting and destroying tumors, with rare basophils playing a key role in this process.
A team of researchers identified two functionally distinct populations of T cells with different cellular architectures that influence their fate. Cells with nuclear invaginations rapidly proliferate and kill pathogens, while those without undergo a more leisurely activation process. These findings have significant implications for und...
Researchers found that tumor-associated macrophages respond to physical properties of fibrosis by synthesizing injury-associated collagens, resulting in metabolic changes that suppress CTL function. This provides an alternative explanation for why anti-tumor immunity is impaired in fibrotic solid tumors.
Researchers at TUM have uncovered a mechanism by which tumor cells prevent the formation of immune responses, including cytotoxic T cells. This discovery provides rationales for new cancer immunotherapies and could enhance existing treatments.
A second-generation melanoma vaccine has shown improved survival rates for male patients compared to female patients, particularly those who are younger and have earlier-stage cancer. The vaccine targets helper T cells to recognize melanoma proteins, leading to boosted patient survival and reduced cancer reoccurrences.
Researchers have discovered that immune cells can form memories of pathogens at multiple phases during an infection, with the ability to switch between memory and effector cell fates. This flexibility enables individuals to better adapt to uncertain situations and respond effectively to different threats.
Researchers from Tokyo Medical and Dental University have identified PD-1+ T cells as the culprit behind harmful inflammation in certain muscular disorders. The study found that these cells, when activated, produce cell-damaging molecules, causing body-wide weakness and pain.
Researchers used dynamic total-body PET scans to visualize immune T cell distribution in recovering patients. The study found increased concentrations of CD8+ T cells in the bone marrow of recovering COVID patients compared to healthy controls.
Researchers at UMass Amherst have identified a small strand of microRNA called let-7 as crucial in governing the formation of cellular memories that enable T-cells to recognize and attack tumor cells. This discovery offers new insights into how vaccines work and could lead to improved cancer therapies by boosting cellular memory.
Researchers found that beta-blockers can revive exhausted killer T cells, making them better cancer fighters. The study discovered a link between the sympathetic stress response and immune system response to cancer.
Researchers discover cBAF protein complex plays crucial role in controlling T cell fate during infection. The study reveals how chromatin remodeling and genetic code accessibility influence the development of cytotoxic T cells into effector and memory subtypes.
Cancer cells have been found to employ a strategy to evade the immune system's killer T cells by interacting with myeloid cells and suppressing type 1 interferon production. This natural pathway is crucial for recruiting killer T cells to combat cancer spread. Researchers hope to develop new therapeutic approaches, such as forcing tumo...
Researchers found that severe herpesvirus infections can strongly activate host cellular immunity, leading to a therapeutic effect on refractory adult T-cell leukemia/lymphoma. This activation may play an important role in the survival of patients with this intractable disease.
Researchers have developed a CAR-T therapy approach that effectively targets and eliminates rogue immune cells responsible for autoimmune diseases like multiple sclerosis. The treatment shows promise as a potential cure for debilitating conditions.
Gene variants associated with leukaemia produce 'rogue' killer T cells that drive autoimmune diseases, according to a new study. These rogue cells can cause autoimmune disease even at low levels, highlighting the connection between leukaemia and autoimmunity.
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.
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.
Research by Saarland University scientists reveals that killer T cells become more effective and powerful with age, making them a promising tool for cancer immunotherapy. The study's findings suggest that older patients' immune systems can produce more potent killer cells to fight off pathogens.
Researchers at UNSW Sydney discovered that T cells use mechanical forces to propel lytic granules towards cancer cell membranes. The study found that the shape of the target membrane plays a crucial role in T cell-mediated cancer cell killing, with a bias towards outwardly curved membranes.
A study led by University of Pennsylvania scientists reveals how tumor-derived factors stimulate trogocytosis, a process that can help cancer cells evade detection and grow unchecked. Blocking this process improved the effectiveness of CAR T cell therapy in mice.
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 found that COVID-19 patients produce fewer ketone bodies than influenza patients, leading to reduced immune function. A ketogenic diet or administering ketone bodies revived immune cells in diseased mice, improving virus elimination and lung damage.
Researchers found that 'killer' T-cells used in immunotherapy can also destroy tumour lymphatic vessels, greatly reducing the risk of metastasis. This synergistic effect could increase treatment effectiveness against cancers with high lymphangiogenesis.
Researchers at Washington State University have discovered that a specific population of CD4-positive helper T cells initiates antitumor immunity defenses, which can enhance the effectiveness of killer cell attacks on cancer cells. This finding holds promise for improving cancer immunotherapy response rates.
Researchers have found that gamma delta T cells can be trained to become extreme killers by recognizing abnormal target cells. This discovery has implications for developing novel cellular therapies to treat cancer and infectious diseases.
Researchers at St. Jude Children's Research Hospital have discovered a DNA-independent mechanism that allows CD8+ T cells to produce both effector and memory cells, enabling the immune system to mount an immediate and long-term response to infections. The study reveals how a specific protein complex guides translation of an important i...
Researchers successfully reprogrammed non-controllers' CD8+ T cells to acquire properties of natural HIV controllers, enabling them to suppress viral load and survive without exhaustion. This breakthrough could lead to a cell therapy strategy for achieving HIV remission, with potential applications in cancer treatments.
A study in eLife found that fine air pollution particles can increase the risk of lung cancer by altering lung tissue structure and reducing immune cell infiltration. The researchers identified peroxidasin as a key enzyme responsible for this effect, which could lead to new approaches for preventing or treating lung disease.
A new study by University of Alberta immunologist Shokrollah Elahi reveals that killer T cells have low levels of protein CD73, compromising their ability to eliminate HIV-infected cells. Chronic inflammation also plays a role in reducing CD73 expression, leading to potential new treatments for both HIV and multiple sclerosis.
Research team finds mutations leading to omicron variant don't affect immune response in people with pre-existing immunity. This suggests individuals who were previously infected or vaccinated may still be protected against breakthrough infections, but humoral immunity may fail.
Scientists have discovered a new therapeutic approach to aid the immune system in fighting cancer, offering hope for better solutions for patients. Researchers found that blocking the EP4 molecule can 'free' the immune system and restore its cancer-fighting functions.
A new study finds that certain COVID-19 variants can escape the human immune system's cytotoxic T cell response in a significant portion of the population. The researchers identified 1,222 epitopes associated with major HLA subtypes, covering about 90% of the human population.
A study has identified specific signaling pathways that determine when immune cells develop into long-lived protective T cells. The researchers found a distinct molecular signature of these memory cells, which helps to unravel the complex way in which immunological memory is formed and maintained.
Researchers have discovered that individuals with a specific HLA type can mount a strong killer T cell response to COVID-19 due to cross-reactivity with seasonal coronaviruses. This finding may lead to the development of new vaccines targeting this immune response.
Scientists at the University of Cambridge have found that T cell mitochondria regulate the refuelling of toxic weapons, enabling killer T cells to stay healthy and keep killing. This discovery sheds light on how these immune system assassins are able to sustain their deadly missions.
A study found that the ability to lose control over HIV is linked to a decrease in proliferative and cytolytic ability of immune cells, years before actual virus loss. In contrast to other infections, T cell dysfunction here impairs their response only to HIV.
Researchers at Massachusetts General Hospital uncover key factors that enable immune cells to survive in tumor environments, including the chemokine CXCL16. This understanding may lead to more effective immunotherapies for cancer patients.
The Yale School of Public Health is partnering with Tevogen Bio to expand its regulatory sciences program, with financial support from the biotech company. The goal is to prepare talented leaders for a rapidly growing field that focuses on product regulation and assessment.
Researchers found that people with milder COVID-19 symptoms tend to have more killer T cells that recognize peptides shared with other coronaviruses, indicating a previous encounter. This may help explain why some individuals are more resilient to infection and potentially predict severe symptoms.
Researchers discovered that tumor microenvironment contains oxidized fat molecules that suppress killer T cells' ability to fight cancer. The process involves CD36 cellular fat transporter and leads to increased lipid oxidation, triggering stress response proteins and repressing anti-tumor functions.
Scientists at St. Jude Children's Research Hospital studied enhancers that regulate Foxp3 gene expression to control effector and killer T cells. They found that these enhancers work together to curb the immune cells' activity, ensuring they only attack cancer cells.
Researchers identified mutant peptides from SARS-CoV-2 that interfere with killer T cell responses, potentially impacting vaccine efficacy. These mutations stunted T cell proliferation, inflammatory factor production, and overall cell-killing activity.
Researchers found that SARS-CoV-2 mutations can evade the immune response by T-killer cells, reducing their effectiveness in detecting and eliminating viruses. The study suggests that future vaccines should target a broader range of epitopes to provide more comprehensive protection.
Researchers found that cytotoxic T lymphocytes (CTLs) dig slow-moving channels through the extracellular matrix to facilitate fast movement of other CTLs. The study suggests modulating ECM properties could enhance immune response efficiency and lead to new therapeutic strategies in cancer treatment.
Researchers found lower frequencies of immune cells needed to expel the virus in older patients, leading to reduced effectiveness in fighting off SARS-CoV-2. The study suggests that cytotoxic T cells play a key role in controlling early infections, but further studies are needed to harness their potential for immunotherapy.
A team of researchers has discovered a novel approach to combat HIV using an antibiotic molecule called concanamycin A. The compound inhibits the Nef protein, allowing cytotoxic T lymphocytes to recognize and destroy HIV-infected cells. This breakthrough offers new hope for a potential cure for HIV by combining with existing treatments.
A new study led by Ohio State University researchers has identified a protein within immune cells called PCBP1 that helps shape optimal immune responses to cancer. Higher PCBP1 activity promotes cytotoxic T-cell functions, while lower levels trigger the expression of factors that suppress cancer immune responses.
Scientists at the University of Oxford have discovered a new way for T cells to attack cells infected by viruses or cancer. Supramolecular attack particles (SMAPs), released from cytotoxic T lymphocytes, can autonomously kill targeted cells, providing a complementary mechanism of cytotoxicity.
A new study found that inhibiting the cancer drug resistance gene MDR1 can have unintended side effects on specialized immune system cells called CD8+ cytotoxic T lymphocytes. This could dull anti-cancer immune responses and increase vulnerability to infection. The research raises questions about the safety and utility of using systemi...
Researchers found that drugs targeting T cells may be effective in treating cerebral malaria, a deadly disease mainly affecting young children. The study suggests that CTLs damage brain blood vessels, leading to brain swelling and death.
A team of scientists from Tokyo University of Science has made a breakthrough in understanding the inflammation mechanism in IgG4-related disease. They found that cytotoxic T lymphocytes (CTLs) and T follicular helper cells (Tfh cells) are necessary for pancreatic inflammation, and propose Janus kinase (JAK) as a suitable therapeutic t...
Scientists have discovered that supercentenarians, people over 110, have an excess of cytotoxic CD4 T-cells, which may be key to their immunity. This finding could provide new insights into the mechanisms of healthy aging and immunosurveillance.