Articles tagged with Macrophages
A new study reveals that high-grade gliomas in dogs contain more immune cells associated with suppressing immune response than low-grade gliomas. The findings suggest that these brain tumors may recruit cells to aid in immunosuppression, which could lead to improved immunotherapies for both humans and dogs.
A study conducted at a Brazilian university found that treatment with curcumin and light reduces parasite load and eliminates Leishmania parasites completely. Curcumin showed good distribution in macrophages and reduced amastigotes' viability, changing their mitochondrial activity.
Researchers found that the drug Vismodegib altered tumor-associated macrophage metabolism, shifting them from immunosuppressive M2 macrophages to pro-inflammatory M1 macrophages. This shift led to a decrease in tumor-promoting properties and improved immune response.
Scientists investigated a method to enhance immunotherapy for lung cancer and found that combining it with certain chemotherapy drugs could eliminate harmful immune cells. This approach showed promising results in preclinical studies, inducing the regression of about 70% of tumors.
Researchers identified that macrophages from different types of monocytes respond to inflammation in opposing ways, with CD14+monocytes being more prone to a pro-inflammatory response. This could lead to targeted activation of macrophages for cancer treatment by choosing the most suitable monocyte subset.
Researchers have discovered a key molecular mechanism underlying immune cell training, which determines whether cells respond aggressively to threats. By understanding this process, doctors may be able to 'hack' the immune system to strengthen it and prevent autoimmunity.
Researchers found a large number of macrophages migrate to the liver after resection, influencing cell growth and metabolism. The study revealed essential roles of macrophages in mouse liver recovery from massive resections.
Researchers at Texas Biomedical Research Institute are receiving NIH funding to investigate the precise mechanisms of Ebola virus infection, including its ability to hijack immune cells called macrophages. The study aims to understand how the virus spreads in the body and potentially develops targeted treatments.
Researchers at Mount Sinai Hospital discovered that early-stage lung cancer tumors hijack immune cells called tissue-resident macrophages to facilitate their invasion of lung tissue. This process allows the tumor to evade the immune system and grow into more deadly stages of cancer.
A study published in Cancer Cell found that cavity-resident macrophages express high levels of Tim-4, which interacts with CD8+ T cells, distracting them from attacking tumors. Blocking Tim-4 enhances the effectiveness of immunotherapies and improves outcomes in mouse models of cancer.
Researchers have discovered that depleting macrophages in tumors activates tumor-specific cytotoxic T cells, eliminating large, RT-resistant colorectal and pancreatic cancers. SIRPalpha-depletion transforms the tumor microenvironment into a potent tumoricidal niche.
A study using a mouse model of eccentric contraction revealed that icing injured muscles delays muscle regeneration. The phenomenon is linked to pro-inflammatory macrophages' ability to infiltrate damaged cells, delaying the healing process.
Researchers at UCLA have identified six signaling codons that specific immune cells use to call up immune defense genes. These codon-words can lead to incorrect gene activation and cause autoimmune diseases like Sjögren's syndrome, which is found when the body mistakenly attacks itself.
Researchers at Uppsala University have discovered that macrophages, a common immune cell, play a crucial role in re-establishing blood flow in damaged tissue. This finding could lead to the development of new treatments for cardiovascular diseases by increasing local concentrations of signal substances in damaged muscles.
Research from Queen Mary University of London reveals that chemotherapy activates immune cells within the tumor microenvironment to fight against cancer. Macrophages switched from pro-tumour to anti-tumour mode after chemotherapy, stimulating patient's immune response and potentially improving survival outcomes.
Researchers found a link between citrullinated vimentin, produced by lung macrophages in response to environmental pollutants, and the development of lung fibrosis. The study suggests that targeting PAD2 enzyme could attenuate cadmium/carbon black-induced fibrosis.
Researchers discovered a new protein, Prosaposin, that plays a crucial role in atherosclerosis. The protein has an anti-inflammatory effect, which helps slow down the disease progression.
A high-fat diet is associated with increased risk of late-onset colorectal cancer, particularly in obese female mice. The study reveals that excess body weight leads to tumor growth through inflammation, insulin-like growth factor release, and polarization of macrophages.
Adhesions form after inflammation or surgery and can lead to chronic pain, digestive problems, infertility, and life-threatening consequences. Researchers have discovered that macrophages play a key role in their development and have developed a new imaging system to visualize them.
Researchers at University of Calgary and University of Bern discovered that macrophages, a type of white blood cell, rush to surgical sites and cause excess scarring. Two methods to inhibit this natural response were found: removing macrophages or introducing a drug to block their stickiness.
Scientists have identified a new cell type, MRC1+ macrophages, involved in chronic pain and inflammation. Stimulating the expression of an anti-inflammatory protein CD163 can reduce neuroinflammation and relieve neuropathic pain.
Remote ischemic conditioning (RIC) treatment may improve recovery from intracerebral hemorrhage, the deadliest type of stroke. RIC reduces inflammation and promotes new blood vessel growth, accelerating functional recovery.
Researchers discovered that Niemann-Pick type C disease is associated with neuroinflammation and impaired intracellular lipid transport, leading to the accumulation of lipids in the brain. The findings suggest a potential new approach for monitoring disease progression and response to therapy.
The study found that LXR activation inhibits the production of chemokines Ccl17 and Ccl22, which recruit regulatory T lymphocytes to the tumor microenvironment. This leads to a decrease in Treg numbers and slower tumor growth.
Researchers at Monash University have discovered a factor that triggers muscle stem cells to proliferate and heal, leading to the complete regeneration of muscle and normal movement. The protein, NAMPT, was found to stimulate muscle growth by 'cuddling' muscle stem cells, effectively replacing damaged tissue.
Researchers at KU Leuven and Seoul National University create method to stimulate immune system cells to repair damaged tissues, offering new potential treatment for inflammatory bowel disease. The technique involves targeting specific macrophage cells with liposomes containing a substance that triggers tissue regeneration.
Researchers identified GAPLINC, a long noncoding RNA that regulates inflammatory gene expression and protects mice from septic shock. The study found that reducing GAPLINC levels enhanced inflammatory responses, but unexpectedly, this effect also protected mice from endotoxic shock.
A Stanford study reveals that chronic inflammation driven by myeloid cells is the main driver of brain aging. The researchers found that blocking a specific hormone-receptor interaction in these cells can restore youthful metabolism and calm down inflammation, potentially reversing age-related cognitive decline.
The EGR1 transcription factor inhibits expression of pro-inflammatory genes in macrophages, blunting their activation and the immune response. This discovery sheds light on the fundamental process of macrophage maturation, which is critical for inflammation.
Research reveals that macrophages, key immune cells, respond to pathogens and stress through circadian-controlled metabolism. The study showed an incredible amount of circadian timing in macrophage behavior, but the clock regulated immunity in unexpected ways.
New research from Karolinska Institutet reveals the development of lung macrophages, immune cells that can protect or harm lungs. Classical monocytes migrate into airways and lung tissue, becoming protective macrophages, while non-classical monocytes develop into pro-inflammatory macrophages.
A recent study found that macrophages play a crucial role in suppressing the effectiveness of PARP inhibitor therapy in breast cancer patients. The researchers identified CSF-1R-positive macrophages as the key suppressive cells, which can be targeted to enhance anti-tumor responses.
Researchers identified MAARS, a lncRNA expressed specifically in macrophages of atherosclerotic plaques, contributing to disease progression. Targeted interruption of MAARS's function reduced atherosclerotic lesion formation by 52%.
Researchers have identified a potential therapeutic strategy for obesity by discovering the signalling pathways responsible for the development of adipose tissue macrophages (ATMs) in obesity. ATMs play a key role in preventing lipotoxicity, where fat molecules are deposited in non-adipose tissues.
Researchers at the Buck Institute have identified chronic inflammation as a driver of NAD+ decline, a key metabolite central to an efficient and healthy metabolism. Senescent cells activate CD38, which degrades NAD+, leading to age-related diseases. Blocking CD38 activity may offer a new target for therapeutic interventions.
A study by Cincinnati Children's Hospital Medical Center found that targeting the BCAP protein could help control overactive immune responses and promote tissue repair in inflammatory diseases. The researchers suggest that modulating BCAP activity could be used to dampen inflammation and accelerate response against tumors.
Researchers at Ludwig-Maximilians-Universität München identified a mechanosensitive ion channel in an endolysosomal system of macrophages. This channel is activated by mechanical stimuli and alterations in osmolarity, regulating the secretion of signaling molecules that control the immune system.
A label-free imaging technique has been developed to examine immune cells called macrophages in the retina of healthy humans and patients with glaucoma. Cell density decreased with age in healthy participants, while cell processes moved more quickly and covered a smaller area in patients.
A new study reveals that macrophages play a complex role in cancer spread, with two types - M1 and M2 - exhibiting different behaviors. The research uses advanced technologies to identify a distinct population of macrophage cells that migrate towards cancer cells, promoting tumor growth.
Macrophages, such as M1 and M2 cells, play a crucial role in the immune response. Researchers have developed a method using gold nanorod scattering to identify these cells from tissue fluids or blood samples. This technique has the potential to predict disease stages, including cancer, atherosclerosis, and fibrosis.
Researchers at University of California San Diego School of Medicine discovered a molecule called Girdin (GIV) that acts as a brake on macrophages. The GIV-mimic peptide can shut down immune cells' overreaction, supporting a mechanism critical for survival in mouse models of sepsis and colitis.
Researchers at CNIC have discovered a mechanism explaining how macrophages regulate obesity and related diseases like fatty liver disease and type 2 diabetes. The study shows that oxidative stress leads to mitochondrial metabolism changes in macrophages, fostering inflammation and obesity.
A study published in Cell reveals a previously unknown mechanism for the heart's waste removal, highlighting the critical role of macrophages in maintaining cardiac health. The discovery suggests that cardiac dysfunction may arise from defects in immune cells rather than cardiomyocytes.
Researchers have found pro-inflammatory lipids that precede Type 1 diabetes onset in a mouse model and high-risk children. The findings suggest that these lipids may serve as biomarkers for the disease and offer a therapeutic target to prevent its development.
Macrophage activation syndrome plays a key role in COVID-19's cytokine storm, which causes systemic hyperinflammation. Researchers found that therapies targeting IL-6 and TNFα show promise in reducing severity of the disease.
Researchers at UIC have discovered that blood vessel cells play a crucial role in programming macrophages to reduce inflammation and promote tissue repair. The study found that Rspondin3, a protein released by blood vessels, helps guide the programming of macrophages.
Researchers at the University of Bonn identify a disease mechanism where fat crystals cause immune system hyperreaction, leading to chronic inflammation. The study reveals that deoxysphingolipid crystals disrupt mitochondrial function and activate an inflammatory response in immune cells.
The study found that macrophages play a critical role in muscle inflammation, fibrosis, and regeneration. Researchers believe that therapeutic manipulations of these cells hold promise for promoting muscle injury repair and improving outcomes for individuals with muscular dystrophy.
Scientists discovered that identifying tumor-associated macrophage patterns in lung tumor tissue enables the prediction of disease progression. The study found that a higher number of tumor-promoting macrophages near the invasive margin is associated with lower patient survival rates.
A team of researchers has developed a potential approach to overcome anti-VEGF resistance in patients with age-related macular degeneration. By combining apolipoprotein A-I binding protein (AIBP) with anti-VEGF, the strategy effectively suppresses choroidal neovascularization (CNV) and reduces drug resistance.
New research from Saarland University suggests that low levels of the stress hormone cortisol and protein GILZ can trigger chronic inflammatory responses in the body. This leads to macrophage ageing, which impairs immune cells' ability to control inflammation, resulting in increased pro-inflammatory signalling molecules.
Researchers developed a new method to apply anti-inflammatory substances to implants to reduce undesirable inflammatory reactions. The coatings contain heparin and hyaluronic acid, which inhibit the immune system's response to the implant.
Researchers at UC San Diego School of Medicine discovered a new way to treat cancer by manipulating macrophages, immune cells found in tumor tissues. IRE1α, a molecule regulating the unfolded protein response, was shown to boost PD-L1 levels on macrophages, allowing tumors to evade the immune system.
A study reveals that smooth muscle cells near necrotic cores of atherosclerotic plaques produce complement protein C3, stimulating macrophage activation and driving clonal expansion. The cells' ability to evade immune surveillance is restored by inhibiting CD47, suggesting these cells as viable therapeutic targets.
Researchers discovered that M2-type macrophages are more susceptible to ferroptosis and may exacerbate chronic inflammation. A mathematical model was developed to describe the stability of macrophages under different conditions.
Researchers at the University at Buffalo have discovered that hematopoietic stem cell transplantation improves Krabbe disease outcomes through a mechanism independent of cross-correction. The study found that macrophages expressing GALC enzyme aid in myelin debris degradation, leading to better patient outcomes.
Researchers at University of Nottingham have developed biomaterials that can control the body's immune response, potentially reducing implant rejection rates. The new materials use surface shape and chemical composition to influence macrophage attachment and behavior.
Researchers at Harvard's Wyss Institute have created disc-shaped particles that control macrophage behavior to slow tumor growth and metastasis in mice. The 'backpacks' keep macrophages in their tumor-killing state for up to five days, reducing the size of tumors and metastatic nodules.
Researchers have found that elevated ferritin concentrations are associated with increased production of special signalling molecules, leading to complications and death in COVID-19 patients. Marker CD163 is also an important indicator of macrophage activation and high risk of complications.
A new study at CNIC discovers a molecular mechanism regulating macrophages, key immune sentinels. The research may lead to cancer treatments and tissue repair by targeting these cells.