Articles tagged with Antigens
Scientists have identified specific proteins in common food sources like corn, soy, and wheat that signal to the immune system that they are safe to eat. Regulatory T cells, also known as Tregs, play a key role in this process, scanning food for these key proteins and calming the immune system when they find them.
Researchers at the Wyss Institute developed DoriVac, a DNA nanotechnology-enabled vaccine platform that induces broad immunity against infectious viruses, including SARS-CoV-2, HIV, and Ebola. The platform produces potent antigen-specific immune responses and is more stable and easier to manufacture than traditional vaccine platforms.
Researchers have identified three new proteins, called epitopes, that help the body determine 'safe' foods, aiding in food tolerance and allergy understanding. The epitopes were found in seed proteins from corn, wheat, and soybean, and interact with regulatory T cells to inform tolerance-or-rejection decisions.
Researchers have developed an innovative antibody-based enzyme switch called 'Switchbody', which is activated upon antigen binding. The switch's mechanism relies on a 'trap-and-release' process, offering new opportunities in diagnostics and therapeutics.
A 47-year-old man from New Jersey died after consuming beef due to a tick-borne meat allergy caused by the Lone Star tick's alpha-gal sugar. Researchers identified the allergy and its link to fatal anaphylaxis, urging physicians to investigate severe abdominal pain after eating red meat in areas with high Lone Star tick populations.
Researchers at the University of Pittsburgh have developed a skin patch test that can detect antibodies associated with COVID and flu infections. The test uses carbon nanotubes and is orders of magnitude more sensitive than existing tests.
The review highlights how T cells specifically recognize and eliminate malignant cells through antigen recognition mechanisms. It also explores how tumors evade immune surveillance through various mechanisms and discusses potential therapeutic strategies, including combination therapies to improve response rates for cancer patients.
Researchers developed a novel technology to attach 'fake targets' to tumor cells, enabling immune cells to attack regardless of antigen presence. The Univody platform showed promising results in animal models, suppressing tumor growth and triggering broader immune activation.
Researchers at MD Anderson have discovered a previously unknown mechanism that explains how bacteria can drive treatment resistance in patients with oral and colorectal cancer. The study also identifies a new biomarker for improved immunotherapy responses in solid tumors.
Researchers at La Jolla Institute for Immunology discovered that ALS is likely caused by an autoimmune reaction triggered by inflammatory CD4+ T cells targeting specific proteins in the nervous system. Anti-inflammatory CD4+ T cells may slow disease progression and prolong survival times.
Researchers developed a high-volume method to rapidly build and test large numbers of antibodies at once, accelerating antibody research and treatment development. The oPool+ display platform has potential applications in influenza vaccination research, infectious disease treatment, and cancer research.
Researchers mapped the surface envelope glycoprotein of human endogenous retroviruses, opening doors to new diagnostic and therapeutic opportunities. The study revealed specific antibodies that target the viral proteins, potentially leading to new cancer immunotherapies and treatments for autoimmune diseases.
Researchers have identified specialized immune cells in the intestine that produce chemical messengers triggering anaphylaxis. Targeting these chemicals, like zileuton, may offer a new approach to preventing food-triggered anaphylaxis.
Researchers discovered that vaccines induce changes in stromal cells of draining lymph nodes within hours, priming the landscape for immune responses. Different vaccines activate lymph node stromal cells differently, with some inducing specific effects on lymphatic endothelial cells.
Researchers have engineered a monoclonal antibody that blocks allergic reactions against common pollen when applied inside the nose of mice, providing new hope for hay fever sufferers. The treatment, known as a 'molecular shield,' acts immediately and locally at the lining of the nose to prevent IgE antibodies from being activated.
This study identifies pre-neadjuvant carcinoembryonic antigen (CEA) and neutrophil-to-lymphocyte ratio (NLR) as significant predictors of postoperative recurrence-free survival in non-small cell lung cancer (NSCLC) patients after neoadjuvant therapy. Smoking history is also a predictor of recurrence in LUSC patients.
Researchers at Nagoya University have created CAR-T cells that recognize and target the Eva1 protein on cancer cells, effectively eliminating tumors in lab mice. The treatment is designed to be safer by ignoring healthy cells with low amounts of Eva1.
The new Epigraph vaccine developed by University of Nebraska-Lincoln virologist Eric Weaver protects against H1N1 swine flu and can also protect against influenza in humans and birds. The vaccine significantly outperformed commercial vaccines, providing protection for up to a decade.
A new study published in Transfusion journal reveals sex-based disparities in the transfusion of whole blood to traumatically injured patients. Women, particularly younger females and those of childbearing potential, are less likely to receive whole blood transfusions compared to men. This disparity is despite whole blood being associa...
A recent study published in Cell revealed that a specific intestinal immune cell prevents food allergies by breaking the threshold between friend and foe in the gut. Researchers at WashU Medicine identified this cell as RORγt+ dendritic cells, which maintain tolerance to harmless food allergens, preventing allergic reactions.
Research from the University of Chicago shows that a specially trained population of immune cells, called peacekeeper cells, prevents other immune cells from attacking their own cells during infection. This specificity allows the immune system to distinguish between foreign and self-antigens, preventing autoimmune attacks.
Patients from American Indian and Black communities are less likely to have elevated CA-125 levels at diagnosis, suggesting current thresholds may miss diverse patients. Inclusive diagnostic guidelines are needed to address disparities in ovarian cancer diagnosis and treatment.
Researchers at UCSF have identified unique, cancer-specific proteins created through mistakes in RNA splicing. These antigens could be used to create potent immunotherapies that recognize and attack hard-to-treat tumors. The discovery offers new hope for glioma patients and expands the number of targets available for cancer therapy.
A new study by UC San Francisco found a marked increase in advanced prostate cancer rates across California since doctors stopped routine screening, with death rates plateauing in most regions. The study emphasizes the need for screening that can identify fatal tumors without raising false alarms.
Research from RIKEN Center for Integrative Medical Sciences found that infant gut bacteria are associated with food sensitivities and allergies, particularly to eggs. The study suggests that probiotic supplements, such as Bifidobacterium, may help prevent food allergies in at-risk infants.
Concordia researchers propose a novel method using ultrasound-guided microbubbles to stimulate critical cytokine secretion in T cells, potentially re-activating them and increasing the release of proteins needed to fight cancer. The approach could complement existing treatments and improve outcomes.
Researchers at the University of São Paulo's Medical School have developed a COVID-19 vaccine using virus-like particles (VLPs), which proved highly protective, safe, and versatile in animal trials. The vaccine can be easily updated to combat variants of concern without requiring an adjuvant.
Scientists found that 'memory cells' with past antigen experience kill cancer quickly but become exhausted faster. On the other hand, 'naïve' cells without prior experience exhibit robust expansion and resistance to exhaustion when targeted by specific genes like RUNX2.
Scientists at Goethe University Frankfurt have discovered a new way to tailor natural killer cells to target leukemia cells, improving their efficacy. The researchers used CRISPR/Cas9 gene editing to disable an immune checkpoint, allowing the modified cells to attack cancer cells more effectively.
A novel nanobody-based immunosensor has been developed for quantitative point-of-care testing, including therapeutic drug monitoring and environmental applications. The design uses BRET—bioluminescence resonance energy transfer—and exhibits great potential in undiluted biological fluids.
Researchers at Tokyo University of Science found that kaempferol increases RALDH2 levels in dendritic cells, promoting regulatory T-cell development and reducing inflammation. The study suggests that flavonoids like kaempferol may serve as natural remedies to alleviate allergic symptoms.
A scoping review found associations between myositis disease activity and gluten exposure in patients with inflammatory myopathies and celiac disease. The study suggests that gluten may act as an exogenous antigen driving myositis in genetically predisposed patients.
Researchers developed a nasal vaccine combining traditional pertussis antigens with an innovative adjuvant called T-vant to boost immune response. The new vaccine was shown to prevent the bacteria's colonization in the respiratory tract, significantly curbing whooping cough spread.
Researchers developed biocompatible polymethyl methacrylate microspheres for controlled antigen delivery. The formulation resulted in efficient uptake by macrophages and other antigen-presenting cells, eliciting a notable immune response.
A Chinese Medical Journal study reveals that patients with prostate cancer can undergo surgical removal without a pre-operative biopsy, using a combination of mpMRI and PSMA PET/CT imaging. This approach reduces costs and complications associated with traditional biopsy methods.
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.
Researchers humanize the lupus-derived autoantibody 3E10, preserving its therapeutic efficacy, to create novel cell-penetrating antibodies targeting tumors and RAD51. Humanized variants exhibit faster cell uptake and superior in vivo tumor targeting.
Researchers at Houston Methodist are working on a national consortium to develop vaccines against two common and destructive strains of herpesviruses. The project aims to create prophylactic and therapeutic vaccines using a computational toolkit that could transform vaccine development.
A team of researchers at UMC Utrecht has identified 29 novel antibodies against the bacterium Klebsiella pneumoniae, an important cause of drug-resistant infections. The antibodies were found to interact with antigens on the bacterial surface and some act synergistically to neutralize the pathogen.
Researchers have developed a new method to detect melanoma using tumour-specific antibodies, which can accurately identify stage I and II melanoma patients. The study found that these antibodies showed high sensitivity and specificity in detecting melanoma, with an AUC value of up to 0.981.
Researchers at MIT found that a two-dose schedule for an HIV vaccine can generate a strong response to the virus, outperforming a traditional seven-dose regimen. The first dose primes the immune system, helping it to produce antibodies more effectively when a larger dose is administered one week later.
Researchers at Tohoku University developed a new quantitative testing system called the Express Biochecker, which uses Janus particles to detect coronavirus N protein. The system is simple, rapid, and low-cost, with potential applications for other viral illnesses and biomarkers.
A new study published in Frontiers in Immunology reveals that certain food proteins like milk and meat can help keep gut tumors from growing by triggering the intestinal immune system. This discovery has potential clinical implications for patients with gastrointestinal conditions.
CAR-T cell therapy, a regenerative immunotherapy, has shown promise in treating blood cancers but struggles with T-cell exhaustion. Researchers have discovered that overproduction of the IL-4 protein causes this exhaustion and used CRISPR gene-editing technology to remove it, improving CAR-T cell therapy outcomes.
A recent study has revealed that oral bacteria, specifically Aggregatibacter actinomycetemcomitans, can exacerbate rheumatoid arthritis. The study found that the infection led to increased inflammation and joint damage in animal models.
A team of researchers at UC Davis Health discovered a novel bioelectrical mechanism that allows Salmonella bacteria to navigate the gut lining and find vulnerable entry points. The study found that Salmonella bacteria detect electric signals in FAE, which helps them move towards openings in the gut where they can enter.
Researchers found that COVID-19 proteins can lower cortisol levels in the brain, leading to a heightened stress response and inflammation. The study suggests that this phenomenon may contribute to the neurological symptoms of Long COVID, including fatigue, depression, and memory problems.
A new method for detecting pancreatic cancer has been introduced using glycopeptide probes that selectively detect specific antibodies in blood samples. These probes mimic tumor-associated antigens and show promise for early detection screenings.
New research published in The FASEB Journal shows that blocking CTLA-4 activates Th17 cells, increasing inflammation and damaging the heart. Inhibiting this activation reverses anti-CTLA-4-mediated heart damage.
Researchers explore various immunotherapies, including immune checkpoint inhibitors and adoptive cell therapies, as promising treatments for hepatocellular carcinoma. The review aims to overcome current limitations of targeted therapies by regulating the body's immune systems.
A German team has developed a photostimulated antigen release system that can be used to precisely study antigen flux in living cells. This method allows for the analysis of complex antigen processing and transport processes in real-time, providing new insights into immune surveillance.
A phase 2 study found fluorine-18 PSMA-1007 PET/computed tomography to be superior to multiparametric MRI for locoregional staging of prostate cancer. The technology supports its use in the preoperative workflow for intermediate-risk and high-risk tumors.
A recent study published in JAMA found that transgender women on hormone therapy have drastically lower PSA levels, which may lead to delayed diagnosis and treatment of prostate cancer. The researchers analyzed Veterans Health Administration records and recommended caution when interpreting PSA values in transgender women.
Researchers developed Epitope Binning-seq to analyze epitopes in monoclonal antibodies. The method accurately classified antibodies into distinct epitope bins, providing valuable insights into their binding patterns and streamlining early antibody drug development.
A study by Chiba University researchers reveals that a specific variant of the HLA gene can trigger an endoplasmic reticulum stress response in skin cells when exposed to certain drugs, leading to drug eruptions. This newfound knowledge may form the basis for innovative treatment options.
Researchers developed a Pix-2-Pix GAN model to correct PSMA PET/CT images, improving image quality and quantitative markers. The AI-generated images show high correlation with original images and potential for reducing CT scans without compromising image quality.
Researchers developed a new 'proactive vaccinology' approach to build vaccines before disease-causing pathogens emerge. The Quartet Nanocage vaccine trains the immune system to target specific regions of eight coronaviruses, providing broad protection against known and unknown strains.
Scientists at DTU and Lund University have found new enzymes that can remove both the A and B blood antigens and their blocking sugars, enabling the production of universal donor blood. This breakthrough has the potential to reduce logistics and costs associated with storing four different blood types.
Scientists have designed a synthetic antigen that can stimulate antibody production against cancer cells. The approach uses a natural protein called serum albumin to carry the antigen, reducing the need for bulky carriers and side effects.
Researchers developed novel therapeutic bispecific antibodies targeting IgM and B-cell surface antigens, which directly inhibited cell proliferation via cell-cycle arrest and apoptosis in vitro. These findings suggest that anti-IgM/B-cell surface antigen-binding specific antibodies are promising therapeutic agents for B-cell malignancies.