1,089 search results for “immunity infection and tolerance” in the Public website
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Synthesis of chemical tools to study the immune system
This thesis describes the synthesis and biological evaluation of TLR2/6, TLR4, TLR7/8 and TLR9 ligands, of which the activity can be conditionally controlled.
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Institute for Chemical Immunology
Overkleeft
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vaccines: particle uptake by dendritic cells is a key parameter for immune activation
Poly(lactic-co-glycolic acid) (PLGA) particles have been extensively studied as biodegradable delivery system to improve the potency and safety of protein-based vaccines. In this study we analyzed how the size of PLGA particles, and hence their ability to be engulfed by dendritic cells (DC), affects…
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Chemokine signaling mechanisms underlying inflammation and infection control: insights from the zebrafish model
This thesis focuses on the role of chemokine receptors CXCR3 and CCR2 in the inflammatory process and infection control using the zebrafish model.
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New insight into tuberculosis infection
Michiel van der Vaart with a team from Leiden University and the LUMC, led by IBL-researcher Annemarie Meijer, discovered that DRAM1 is a protein that regulates anti-bacterial autophagy, a defense mechanism against infections such as tuberculosis.
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Vaccines Are Highly Thermostable and Induce Both Humoral and Cellular Immune Responses
The potential of bioneedles to deliver influenza vaccines was investigated.
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Harnessing the soil microbiome for improved stress tolerance in crop plants
Which compounds and microorganisms that live near and inside plant roots are beneficial? Can we use this knowledge to improve the health and growth of crop plants?
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Restraint under conditions of uncertainty: Why the United States tolerates cyberattacks
This new article by Monica Kaminska is part of a special issue for Journal of Cybersecurity, based on a selection of contributions from THe Hague Program for Cyber Norms' 2019 Conference.
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Engineering innate immunity for therapy
Immune system defends our body against pathogens and cancerous cells, but excessive immunity can in turn lead to tissue damages and diseases. For example, scratching the surface of the eye ignites an immune response that aims at preventing infection but can also lead to edema, angiogenesis and eventually…
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Bastiaan Rijpkema appointed Professor by special appointment of Tolerance
Bastiaan Rijpkema has been appointed Professor by special appointment of the new chair Tolerance at the Faculty of Humanities with effect from 1 July 2021. The chair was established by Stichting Leerstoel Uytenbogaert.
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Peptide Amphiphile Nanoparticles Enhance the Immune Response Against a CpG-Adjuvanted Influenza Antigen
Cationic peptide amphiphile nanoparticles are employed for co-delivery of immune modulator CpG and antigen. This results in better targeting to the antigen presenting cells and eliciting strong Th1 response, which is effective against the intracellular pathogens.
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Systems dermatology of immune-mediated dermatological diseases: cutaneous T-cell lymphoma
The complex pathophysiology of immuno-dermatological disorders is multifactorial, including environmental, skin microbiome, (epi)genetic and immune dysregulation conditions. This project primarily focuses on the orphan disease mycosis fungoides, a subtype of cutaneous T-cell lymphoma. The current pathophysiological…
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Single-cell immune profiling of atherosclerosis: from omics to therapeutics
Acute cardiovascular syndromes, including myocardial infarction or stroke, are the principal cause of death in the Western society. The main underlying pathology of cardiovascular diseases is atherosclerosis, which is caused by the accumulation of lipids and inflammatory cells in the vessel wall, in…
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Chemokine Gradient Sensing in Ewing Sarcoma Progression, Angiogenesis and Immune Targeting
What are the biological and biophysical mechanisms that control chemokine gradient sensing and migration of immune, endothelial, and tumour cells in tumour development?
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Control of Western flower thrips through jasmonate-triggered plant immunity
We showed that constitutive and inducible chemical and morphological defenses against Western flower thrips differ between tomato and chrysanthemum plants.
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3D Image to Characterize and Optimize antibody-mediated antitumor immunity
Bispecific antibodies with one Fab arm binding to effector cells, such as T-cells and NK-cells, while the other Fab arm recognizing a tumor associated antigen (TAA) can be used to redirect these effector cells for tumor specific killing. Using bispecific antibodies to treat hematological cancers is…
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Beyond the cloudiness in urinary tract infection: definitions, diagnostics, and strategies for prevention
PhD defence
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Autophagy and Lc3-associated phagocytosis in host defense against Salmonella
Control of infectious diseases poses continuous challenges for human health.
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Chemical biology of antigen presentation by MHC molecules
MHC class I and MHC class II molecules present peptides to the immune system to drive proper T cell responses. Pharmacological modulation of T-cell responses can offer treatment options for a range of immune-related diseases.
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Liposome-based vaccines for immune modulation: from antigen selection to nanoparticle design
PhD defence
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Regulation of the immune response by unsaturated lipid mediators in the context of the osteoarthritic joint
PhD defence
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hiPSC-derived 3D cardiac microtissue models with integrated immune cells and vasculature
PhD defence
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Schistosoma mansoni Extracellular Vesicles and their Impact on the Immune System
PhD defence
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Researchers discover how malaria parasite survives in mosquitoes
Researchers from Leiden University Medical Center (LUMC) have discovered how malaria parasites escape the immune system of mosquitoes. The so-called QC enzyme changes proteins on the outside of the malaria parasite such that the immune cells are unable to recognise the parasite. As a result, the parasite…
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Studies on molecular basics of metabolic syndrome in zebrafish
The research described in this thesis has, using the zebrafish as a model system, shed new light on the intricate relationship between TB and DM2, in particular on the role of leptin, SHP-1 and glucocorticoids.
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About this minor
Everything you need to know about the minor Ecology, Migration and Tolerance: Limits to Cooperation.
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Worm and stomach bacteria: our allies in the battle against allergic asthma
Parasitic worms and stomach bacteria suppress immune reactions such as allergic responses. Parasitologist Hermelijn Smits and lung specialist Christian Taube from the LUMC are trying to learn from these micro-organisms.
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against atherosclerosis; induction of protective CD8 T-cells through immunization
Atherosclerosis, in particular rupture of atherosclerotic plaques, is the underlying cause of most heart attacks or strokes and is the leading cause of death worldwide.
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Leiden University and LUMC join Netherlands Centre for One Health
Leiden University and Leiden University Medical Center have joined the Netherlands Centre for One Health (NCOH), further strengthening the academic network in which such problems as antimicrobial resistance are studied.
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‘Tolerance and respect will advance medical science’
Fijs van Leeuwen, Professor of Radiology, Molecular Imaging and Image-Guided Therapy, advocates an open and respectful academic culture that always puts the patient first. He delivered his inaugural lecture on 13 November.
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RESTORING T-CELL HOMEOSTASIS BY IN VIVO MANIPULATION OF DENDRITIC CELLS
The loss of T-cell homeostasis and tolerance towards self-antigens is the underlying cause of autoimmune and inflammatory diseases like atherosclerosis, rheumatoid arthritis or type I diabetes. Traditionally, the treatment of these diseases consisted on systemic immune suppression, which can entail…
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Computational modeling of tumor growth and metastasis and the role of the immune system in tumor destruction
In this project, we aim to obtain a quantitative understanding of the role of the immune system in tumor regression, of the role of tumor cell heterogeneity in cancer growth and of tumor cell migration properties.
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Research
Tuberculosis causes 1.5 million deaths yearly and anti-tuberculosis therapies are threatened by emergence of drug resistance. Development of innovative drug combinations should be accelerated with the use of translational pharmacological models. Moreover, host-directed therapies (HDT), which stimulate…
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Immune system important in atherosclerosis
The immune system plays an important role in the development of atherosclerosis, the underlying cause of cardiovascular diseases. Thomas van der Heijden has discovered that immunosuppressants may play a preventative role. PhD defence 19 December.
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Buccal and sublingual vaccine delivery
Because of their large surface area and immunological competence, mucosal tissues are attractive administration and target sites for vaccination.
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Diminishing tolerance in the Netherlands threat to liberal society
The Upper and Lower Houses of the Dutch Parliament are struggling with how tolerance should best be interpreted. As a result, the freedom in the Netherlands for people who hold alternative views is diminishing. This is Floris Mansvelt Beck’s conclusion on the basis of his PhD research. Defence on 2…
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Islam and Society
Knowledge of Muslim societies is essential to function in a globalised world and to fully understand our own Dutch society. Leiden researchers explore the languages, cultures, religions, legal systems and history of Muslim societies and in this way contribute to a centuries-old tradition.
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Cleaning up tuberculosis and salmonella infections
The cellular recycling system in zebrafish is capable of eating harmful bacteria and thus resist infections such as tuberculosis and salmonellosis. That is written by Leiden biologists from the group of Annemarie Meijer. Stimulating this form of defence could be used in new treatment methods against…
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Live or let die: the intracellular fate of pathogenic mycobacteria
How do mycobacteria subvert the defenses of host immune cells?
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‘Skin injection could allow us to vaccinate up to five times more people from the same supplies’
The current COVID-19 vaccination campaign involves injecting the vaccine into muscle tissue, but injecting a smaller amount of vaccine in the skin might also provide good protection. The #wakeuptocorona crowdfunding campaign has enabled Anna Roukens (LUMC) to examine the safety and efficacy of vaccination…
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Neanderthals could tolerate smoke
The idea that modern humans displaced Neanderthals because they were better protected against toxic smoke components is now under fire. An earlier study that put forward this suggestion has now been refuted by genetic research by scientists from Leiden and Wageningen. This new research was published…
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New insight into immune cell behaviour offers opportunities for cancer treatment
An international group of scientists has discovered that certain cells of our immune system – the so-called T cells – communicate with each other and work together as a team. To fight an infection they stimulate each other’s growth, but at the same time, they inhibit each other when there is a surplus…
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Maria Yazdanbakhsh
Faculteit Geneeskunde
m.yazdanbakhsh@lumc.nl | +31 71 526 5067
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Targeting the immune system to inhibit atherosclerosis
A new treatment for atherosclerosis showed promising results in isolated cells but proved to be less effective in initial animal tests. Bachelor student Biopharmaceutical Sciences Willemijn van der Heijden aimed to understand why. She investigated whether the formation of a protein layer around the…
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Single cell technologies for mechanobiology and mechanopharmacology
Mechanobiology is a major area in biology, however, mechanics is currently a missing element in drug development pipelines. This has led to a high cost for the society. Mechanotoxicity of drugs often appears as a long-term side effect of drugs, and has led to removal of drugs from the market. Furthermore,…
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How killer -T-cells migrate towards virus-infected cells
Joost Beltman (LACDR, Leiden University) has provided novel insights in the way T cells migrate towards virus-infected cells. This was accomplished by a combination of experimental research in the group of Ton Schumacher (Dutch Cancer Institute, NKI) and computer simulations in collaboration with Rob…
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New light on innate plant immunity
Plants are able to resist a pathogen’s attack by a dual innate immune system. The relationship between the two pathways was not clear, but it turns out that they mutually potentiate each other, as assistant professor Pingtao Ding (Institute of Biology Leiden) and colleagues (The Sainsbury Laboratory,…
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Steering the immune system with liposomes
Liposomes – nano-sized spheres composed of fatty molecules – are very promising for vaccination. Bio-pharmaceutical scientist Naomi Benne discovered that the immune response in animal models can be steered by varying the charge of the liposomes. She obtained her PhD degree on 8 September for this research,…
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Transcutaneous vaccination by means of coated and hollow microneedles
Transcutaneous vaccination is attractive because it is non- or minimally invasive, pain free and the site of administration (skin) is easily accessible. What’s more, transcutaneous immunization can lead to a strong immune response owing to the presence of immune-competent cells in the skin.
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New insights into mycobacterial infections with NWO grant
Why are mycobacteria such successful pathogens? And are there defence mechanisms in the body that help reduce an infection? To find out, Annemarie Meijer has been awarded the NWO Open Competition ENW-XL grant. She will not explore this quest alone. Five other leading Dutch research groups are participating…