Articles tagged with Immune Response
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A Cornell undergraduate has found a potential solution to immune dysfunction in space, suggesting that a transcription factor called MRTF could be the missing link. The study identified changes in the cytoskeleton of macrophages as a key factor in immune system dysfunction.
A deficiency in gene regulation disrupts the clearance of surfactant lipids in alveolar macrophages, leading to their bloating and foaming. This defect is associated with conditions like pulmonary alveolar proteinosis, obesity, and atherosclerosis.
Researchers discovered a telomere transfer reaction between immune cells that extends their lifespan and confers long-term protection. This 'anti-ageing' mechanism has potential clinical applications for diseases like cancer and dementia, and may enable people to live healthier and longer.
Researchers at the University of Zurich have developed a new immunotherapy strategy to eliminate fibroblasts in targeted manner, reducing lung and liver fibrosis in mice. The treatment triggers an immune response via cytotoxic T-cells, eliminating activated connective tissue cells while leaving resting cells undamaged.
A recent study found that the immune response to COVID-19 booster vaccination decreases over five months, with a slower decline in antibody levels after the third dose compared to the second. The neutralizing response to the Omicron variant was also found to be lower than other variants of concern.
A study published in The New England Journal of Medicine found that mucosal antibodies in the airways significantly reduce the risk of omicron infection. High levels of these antibodies more than halved the risk of becoming infected, while also being associated with lower viral replication.
A new study provides valuable insights into the roles of B cells and plasma cells in early-stage lung cancer biology, highlighting their influence on tumor development and treatment outcomes. The research also reveals environmental factors and molecular features that contribute to the landscape of infiltrating immune cells.
Researchers found that gut commensal bacteria enhance the pathogenesis of a tumorigenic murine retrovirus by upregulating genes that suppress the immune response. This ability to evade the immune system allows tumors to develop and progress in mice infected with the virus.
Bladder cancer researchers discovered a subset of CD8 T cells that adapts to tumor evasion strategies, offering a strategy to reduce tumor cells' ability to fight them off. The study also identified potential ways to make immunotherapy more effective against this deadly cancer by targeting the HLA-E/NKG2A axis.
A study by researchers at Linköping University suggests that severe COVID-19 infection has long-lasting negative effects on the immune system. The results showed that patients developed antibodies against SARS-CoV-2 within 2-3 weeks of symptoms, which then started to fall after six months.
A team of Stanford scientists has developed a new method to predict which antigens will lead to a strong immune response, allowing for more effective cancer immunotherapies. By applying a sliding force between peptides and T cell receptors, the researchers can identify the best antigen-receptor pairs in under five hours.
A study published in NEJM found that individuals infected with previous SARS-CoV-2 variants have four times greater protection against the current Omicron BA.5 subvariant than those who were not infected. This hybrid immunity provides significant protection against future infections.
Researchers discovered a substance that increased immune response to an experimental COVID-19 shot in mice, producing antibodies 25 times greater than without an adjuvant. The new adjuvant, αGC-CPOEt, is being investigated as a potential treatment for COVID-19 and other infectious diseases.
Researchers at Indian Institute of Science create a novel virus-like particle (VLP) to safely study SARS-CoV-2 mutations and trigger an immune response. The VLP is stable, can attach to host cells, and elicit antibodies that neutralize the live virus.
A recent study by Medical University of Vienna researchers has identified a crucial dual function of neutrophils in liver regeneration after partial hepatectomy. The findings suggest that these immune cells produce factors necessary for liver growth, enabling the organ to recover quickly from tissue damage.
Researchers found that statins, commonly prescribed lipid-lowering drugs, provide a protective immune function in females. Women taking statins were 75% less likely to be ANA+, suggesting a sex-specific difference in the relationship between lipid metabolism and immunity.
A research team led by Professor Wolfgang Kastenmüller has discovered that unconventional T cells play a crucial role in triggering site-specific immunity in distinct lymph nodes. The study reveals that different subtypes of unconventional T cells migrate to specific lymph nodes, influencing the immune responses there.
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.
Researchers found that immune cells prefer nutrient fuels previously thought to be waste products, including lactate. This discovery could lead to personalized dietary recommendations to supercharge the immune system. The findings also suggest a strong influence of nutrients on T cell function and survival.
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 have discovered a broadly neutralising antibody, ZCB11, that protects against all SARS-CoV-2 Omicron variants. Administration of ZCB11 either prophylactically or therapeutically shields lung infection in golden Syrian hamsters from Omicron viral challenge.
Researchers at UNSW Sydney have found a transposable element that regulates the immune response to virus infection in mice, leading to exaggerated immune responses and tissue damage. Reintroducing the element restores survival, suggesting its potential as a target for treatment.
Boosting with either Janssen or Pfizer-BioNTech vaccine boosts humoral and cellular immune responses. Boosting with Janssen vaccine provides durable antibody and T-cell responses for at least four months.
Researchers at Kyoto University have developed a cancer therapy model that utilizes a protein degrading system to transiently degrade and reduce the PD-1 protein, which blocks immune function. This approach has shown high therapeutic efficacy in inhibiting cancer cell growth in mice.
Researchers aim to uncover information on blotchy bass syndrome's prevalence, distribution, and potential risks through data collected by citizens. The study will help determine which bass species are susceptible and which seem immune.
A team of researchers from The Mount Sinai Hospital has made a groundbreaking discovery into the genetic and molecular mechanisms that predispose individuals to Alzheimer's disease. They identified 21 candidate risk genes, including SPI1, which regulates microglia and AD risk.
A University of Queensland-led research found that children's noses have a more effective anti-viral response to ancestral SARS-CoV-2 than adult noses. The study suggests that this may contribute to the lower infection rates and milder symptoms in children compared to adults.
A study from Cold Spring Harbor Laboratory discovered a new list of friendly proteins generated by the human thymus that protects healthy tissue from T cell attacks. This finding may lead to improved treatments for autoimmune disorders such as multiple sclerosis and diabetes.
Researchers create a modified live attenuated mumps virus for delivery, showing it induces stronger immune responses and provides superior protection against SARS-CoV-2. The new vaccine candidate uses a prefusion version of the spike protein and offers potential to enhance MMR childhood vaccine.
CoVaRR-Net is investing $6.9 million in 15 research projects focused on understanding Omicron subvariants and finding solutions to curb their spread. The studies will explore various aspects of variants, including viral transmission between animals and people, new variant mutations, and the impact of social factors on Indigenous Peoples.
Researchers at Moffitt Cancer Center used mathematical modeling to study the impact of tumor size, immune cell populations, and interactions on cancer treatment outcomes. The models predicted optimal therapeutic approaches for different types of therapies, including cytotoxic chemotherapy and immunotherapies.
The SARS-CoV-2 spike protein activates the natural immune response in heart muscle cells, causing damage and inflammation. The study found that the spike protein also caused hypertrophic remodeling and cardiac dysfunction in lab mice, highlighting a novel, ACE2-independent pathological role of the virus.
A study by Goethe University Frankfurt found that antibodies against Omicron variants BA.1 and BA.2 decline rapidly, even after a second vaccination or booster shot, offering limited protection against infection.
Researchers have developed a novel COVID-19 vaccine based on altered plasmid DNA that effectively blocks cell infection across all tested variants. The vaccine targets a specific vulnerability in the SARS-CoV-2 virus's spike protein, inducing a focused antibody response.
A new clinical trial found that COVID-19 booster vaccinations in adults elicit high levels of neutralizing antibodies against the Omicron variant, but these antibody levels decrease substantially within 3 months. The immune response to Omicron sub-lineages shows reduced susceptibility to rapidly emerging variants.
A new study uses machine learning models to predict cancer patients' responses to immunotherapy based on their gut microbiome features. The research identifies common gut bacterial taxa associated with responders versus non-responders, providing a potential tool for distinguishing and predicting immunotherapy responders.
Researchers found that COVID-19 vaccinations have an underperforming immune response in the airways compared to natural infection. Nasal sprays could provide a boost to protect against emerging variants and offer higher cellular and humoral immunity. The study suggests that mucosal antibodies play a crucial role in neutralizing the virus.
A rise in severe acute hepatitis of unknown causes (SAHUC) in children has been reported worldwide, with symptoms including jaundice, vomiting, and diarrhea. Diagnostic tests such as liver enzymes and biopsy reports can help identify the disease, but its etiology remains unclear.
Researchers at the University of South Australia have discovered that combining anti-rejection medication with immune checkpoint inhibitors can significantly reduce the risk of organ rejection and eliminate cancer cells in a quarter of patients. The study involved 22 patients with renal transplants and incurable locally advanced or met...
Researchers analyze delta variant's biophysical characteristics, revealing unique traits that evade neutralizing antibodies and contribute to severe symptoms. The study sheds light on why vaccinated individuals can still contract the virus and why delta variant hospitalizations are higher than other variants.
A study by researchers from the University of Chicago reveals that bacteria in donated organs complicate the immune response after transplantation. The findings show that immune responses against commensal bacteria add to the rejection of the organ, reducing the effectiveness of immunosuppressive drugs and causing damage to the graft.
Children born to mothers with polycystic ovary syndrome (PCOS) are at a higher risk of developing infections, allergies, and other childhood illnesses by age 13. The study found that children of mothers with PCOS were 32% more likely to be admitted to hospital for various health problems.
Researchers investigated long-term features of immune responses to SARS-CoV-2 in children and adults who experienced mild infections. The study found that both groups developed similar patterns of antibody responses, indicating a shared immune memory.
Researchers have successfully used lasers to control neutrophils, a type of white blood cell, as natural microrobots in living fish. The 'neutrobots' can perform multiple tasks, including delivering drugs to precise locations in the body, and show promise for targeted drug delivery and disease treatment.
A recent study published in CANCER found that adults with hematologic malignancies mounted immune responses after a COVID-19 booster dose, with 56% of nonresponders producing antibodies. However, the initial vaccine showed limited effectiveness, with only 48% of patients developing detectable antibodies.
Scientists have uncovered how the innate immune system detects HIV-1, even at very small amounts, and activates a two-step molecular strategy to combat the virus. This discovery could lead to new methods for treating HIV and vaccines, as well as insights into other diseases like Alzheimer's.
Researchers at Max Planck Institute identified two classes of molecules boosting plant immunity. These compounds drive critical defense-control hubs and could be used as natural immunostimulants for crop diseases.
Scientists have found that prior exposure to Staphylococcus aureus prevents effective vaccination due to immune response memory. To overcome this, the research suggests targeting only the protective component of the protein IsdB, generating a more effective vaccine against MRSA.
Researchers have created stem cell models that mimic the genetic disorder, revealing the role of WASP protein in regulating RNA splicing and finding potential therapeutic targets. These findings could lead to new treatments for Wiskott-Aldrich syndrome, a devastating immune deficiency disorder.
A new study published by UNC School of Medicine researchers found that fourth-generation vaping devices are associated with unique changes in markers of immune responses inside airways. The study compared the respiratory immune health effects of different types of devices, including third-generation and fourth-generation models.
A new analysis suggests that the COVID-19 vaccine generates antibodies targeting unique and conserved regions of the SARS-CoV-2 spike protein. The immune system's history with other coronaviruses shapes the patient's response, and the antibody response to common cold coronaviruses appears to follow different paths than to SARS-CoV-2.
Researchers at the Garvan Institute of Medical Research have identified key molecules linked to the mammalian-meat allergy caused by tick bites. The study reveals that a particular antibody type has a natural pocket into which a sugar molecule, galactose-α-1,3-galactose (alpha-gal), snugly fits.
Scientists at Indiana University School of Medicine discovered differences in FOXP3 isoforms controlling Treg cells and their impact on the immune system. These findings may lead to new treatments for autoimmune diseases and allergies.
Researchers analyzed antibodies to internal and surface proteins of SARS-CoV-2, finding that profiles of internal proteins predicted survival outcomes as well as those for surface proteins. The study suggests targeting other parts of the virus could enhance COVID-19 vaccines and therapies.
A research team at MedUni Vienna has discovered key mechanisms of mugwort allergy, laying the foundation for a potential vaccine. The study found that fragments of the major mugwort pollen allergen can be used for effective therapy, providing a promising first step towards causal therapy and prevention.
Wistar scientists have identified a novel therapeutic approach that inhibits the gene KDM5A, which improves immune cell infiltration and attack on tumors. This approach has shown promising results in both in vitro and in vivo studies, including reduced tumor burden and improved survival rates in mice with ovarian cancer.
A new study reveals that COVID-19 variants are formed in chronic patients with weakened immune systems, who experience prolonged infections. This leads to the accumulation of mutations, similar to those found in severe illness variants.
Researchers identified immune endothelial cells promoting inflammation and developmental endothelial cells supporting cell development, regeneration, and proliferation. The study's findings may lead to targeted treatments for lung infections and acute respiratory distress syndrome.
Researchers developed a nanoparticle sensor that can accurately distinguish between viral and bacterial pneumonia within two hours using a simple urine test. The sensor uses the host's immune response to infection, detecting specific protease patterns that serve as signatures of bacterial or viral infection.
Researchers at the University of Birmingham have identified a 'cellular brake' protein that may help prevent autoimmune responses in lung cancer patients undergoing immunotherapy treatment. This finding could enable clinicians to closely monitor high-risk patients and develop preventative strategies.