883 search results for “immunity infection and tol” in the Public website
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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…
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Cancer pathogenesis and therapy
With cancer, a person’s body cells grow uncontrollably. Putting together a detailed picture of how this comes about makes it possible to develop efficient therapies. Researchers at the Leiden University Medical Centre (LUMC) and Leiden University are working together to gain a better understanding…
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Antibody Glycomics Signatures of SARS-CoV-2 Infection and Vaccination
PhD defence
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Specialised immune cells have potential for new cancer immunotherapies
Researchers from Leiden University Medical Center (LUMC) and Netherlands Cancer Institute (NKI) have discovered how specialised immune cells can detect and remove cancers that are ‘invisible’ to the conventional defence mechanisms of the immune system. Their work has been published in Nature. The findings…
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Drugs for our immune system in the right place at the right time
Immunologist Leender Trouw specialises in the complement system, which is part of the immune system. In some diseases drugs help activate or inhibit this system. This is best done ‘in the right place at the right time’ − the title of his inaugural lecture.
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Macrophages as drivers of an opportunistic infection
The opportunistic bacterium Burkholderia cenocepacia is feared by cystic fibrosis patients and is emerging in hospital-acquired infections. An international study sheds new light on the infection mechanism of this opportunistic pathogen that may have large implications for treatment strategies.
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Rising infections: how is the University responding?
The infection rate is rising again in the Netherlands, which means it may also be rising among Leiden University’s students and staff. How is the University responding? And what dilemmas is it facing? We spoke to our Rector Magnificus, Chief Security Officer and two other administrators.
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Cancer cells play hide-and-seek with immune system
When the immune system attacks cancer, the tumour modifies itself to escape the immune reaction. Researchers at LUMC published on this subject in Nature on 28 June.
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Rethinking antibiotic therapy of urinary tract infections
Suruchi Nepal, postdoc in the group of Coen van Hasselt at LACDR, was awarded an NWO XS project which aims to study the response to antibiotic treatment during a urinary tract infection (UTI). This knowledge will be used to determine how treatments of UTIs with antibiotics can be further improved.
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Student projects
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Rijksmuseum Boerhaave opens exhibition with major role for corona crisis
The ‘Contagious!’ exhibition was set to open at Rijksmuseum Boerhaave in April but had to be postponed because of the corona crisis. The museum hasn’t been twiddling its thumbs in the meantime. The exhibition will now open on 16 July, and the corona crisis has a major role.
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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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Exploitation of host chemokine signalling by pathogenic mycobacteria
Promotores: A.H. Meijer, H.P. Spaink
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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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Mycobacterial cell wall-deficiency and its role in the persistence of tuberculosis
What is the role of cell wall-deficiency in the persistence of tuberculosis?
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Layers of dental tartar
Bacteria in the teeth tell us a lot about nutrition and disease in our ancestors. It also tells us more about the immune system. This provides clues for treating modern diseases and allergies. For a long time archaeologists were irritated by tartar on the teeth of excavated skulls. They thought that…
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Functions of leptin in tuberculosis and diabetes: multi-omics studies across species
In this thesis, I study 1) metabolic alterations in tuberculosis related to wasting syndrome in human patients as well as in rodent and fish animal models. 2) effects of the mutation of the leptin gene on cachexia and diabetes in rodent and zebrafish animal models.
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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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Novel immunomodulatory drugs for tuberculosis treatment
Can drugs that target host signaling pathways be used to eradicate antibiotic-resistant bacteria?
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Global metabolomics and lipidomics approaches to probe virus-host interactions
The outbreaks of AIDS and COVID-19 showed clearly how infectious viruses can influence people’s lives. Investigating the changes in the host metabolism may provide a paradigm shift to consider immune-metabolic interactions as therapeutic targets.
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Animal Sciences
We perform multidisciplinary research at molecular, cellular, and organismal levels of animal biology to increase fundamental understanding of health and disease.
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Staying Ahead of the Virus
In STAYAHEAD data-intensive approaches are being developed to ”decode the human immunome” with a focus on a global vaccine strategy. They have developed a rapid mass spectrometric test to analyse in real-time large numbers of variants of SARS-CoV-2 and the host immune response, and use these data to…
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Interview with Joris van den Tol, History PhD and Fulbright and New Netherland Institute scholar
Joris van den Tol spent three months doing archival research in Albany in the USA. Read on how he experienced his stay.
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‘The immune system is a double-edged sword’
With cancer, the immune system is a double-edged sword: it can attack tumour cells, but can also help them grow and spread. It is a question of harnessing it. This is what Professor Karin de Visser argued in her inaugural lecture on 15 November 2019.
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Deadly infections on the increase: urgent need for new antibiotics
Globally, the number of deaths from infections is on the rise as more bacteria become resistant to antibiotics. New classes are desperately needed. A promising resistance inhibitor is now being developed by the research group of Nathaniel Martin, Professor of Biological Chemistry. Inaugural speech on…
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Development of hyaluronan-based dissolving microneedle arrays for dermal vaccination
Dissolving microneedles are a subgroup of microneedle types that completely dissolve within the skin. During this dissolving process the vaccine, stored in the needle matrix, is released into the skin.
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Immune system plays dual role in breast cancer
The immune system plays a paradoxical role in the spread of breast cancer. Some immune cells contribute to metastasis, while other cells can be activated to strengthen the effect of chemotherapy. Kelly Kersten made this discovery in her PhD research. PhD defence 7 February.
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Development of cross-protective influenza A vaccines based on cellular responses
Seasonal influenza vaccines provide protection against matching influenza A virus (IAV) strains mainly through the induction of neutralizing serum IgG antibodies. However, these antibodies fail to confer a protective effect against mismatched IAV. This lack of efficacy against heterologous influenza…
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Translational Immuno-Pharmacology
The Translational Immuno-Pharmacology group works on translating the efficacy of anti-infective therapy from preclinical (e.g. in vivo) to clinical, and is led by Rob van Wijk. Infectious diseases, such as tuberculosis, are in constant need of new therapies that work better, faster, and with less risk…
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ZF-HEALTH - Zebrafish Regulomics for Human Health
How can zebrafish research help understanding human diseases?
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Customary International Criminal Law and Head of State Immunity by Judge Chile Eboe-Osuji
On 12 September 2019, Judge Chile Eboe-Osuji, President of the International Criminal Court (ICC), delivered a lecture on Customary International Criminal Law and Head of State Immunity to open the academic year for the Advanced LL.M. Programmes in Public International Law & International Dispute Settlement…
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COVID Radar is a good predictor of increasing infections
The COVID Radar app is citizen science at its best. More than 200,000 users in the Netherlands are answering questions about their health and behaviour to help predict the development of the pandemic. Niels Chavannes, Professor of General Practice at Leiden University Medical Center, explains how the…
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ImageInLife: Training European experts in multilevel bioimaging, analysis and modelling of vertebrate development
How can novel bioimaging technologies and vertebrate model species be used to gain a better understanding of early cellular behaviours with the ultimate goal to increase our understanding of human development and disease processes?
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Fast vaccine design and development based on correlates of protection (COPs) Influenza as a trendsetter
New and reemerging infectious diseases call for innovative and efficient control strategies of which fast vaccine design and development represent an important element.
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In war crimes, commanders do not have legal immunity
In her capacity as a lawyer and expert in International Humanitarian Law and Human Rights, Professor Helen Duffy is filing a lawsuit against the Dutch State. Leiden University’s weekly newspaper Mare reports that through her role, Duffy is assisting a Palestinian Dutchman whose family was killed in…
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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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Modelling the role of cytotoxic T lymphocytes in tumour regression
Immunotherapies for cancer are an emerging class of therapeutic strategies which aim to treat cancer via augmentation of the immune system.
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Better vaccines against malaria and tuberculosis
The infectious diseases malaria and tuberculosis are responsible for 2.1 million deaths every year. Leiden researchers are currently testing a new tuberculosis vaccine.
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Inflammafish: Cross-talk between inflammation and autophagy in tuberculosis
Effective host defence against tuberculosis bacteria depends on a properly balanced level of inflammation. The Inflammafish project uses zebrafish larvae to study how autophagy controls this inflammation and vice versa.
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Cytokine-mediated regulation of immunity during persistent viral infection
PhD defence
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Monitoring the immune responses to vaccination and infection
PhD defence
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A chemical connection that affects your immune system
A group of chemists, that includes Sander van Kasteren and Hermen Overkleeft, has discovered that azides, a certain type of chemical compound, can determine whether or not T cells respond to or ignore a vaccine. Their discovery is set to be published in Angewandte Chemie.
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Microneedle-mediated vaccine delivery
Promotores: Prof.dr. J. A. Bouwstra, Prof.dr. W. Jiskoot
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Improved storage stability and immunogenicity of hepatitis B vaccine after spray-freeze drying in presence of sugars
The current hepatitis B vaccines need to be stored and transported under refrigerated conditions (2-8 degrees C). This dependence on a cold-chain is highly challenging in areas where hepatitis B virus infections are endemic.
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Cell-autonomous and host-dependent CXCR4 signaling in cancer metastasis: insights from a zebrafish xenograft model
Promotor: A.H. Meijer, Co-promotor: B.E. Snaar-Jagalska
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Combatting infectious diseases; nanotechnology as a platform for rational vaccine design
Currently, several successful vaccines are available. However, for pathogens with a highly variable genetic composition, and for which serum IgG antibodies are not a useful correlate of protection, effective vaccines are yet to be developed.
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Quantitative pharmacology of antimicrobials
Antimicrobial drugs constitute a fundamental part of modern medicine. The global rise in antimicrobial resistance poses a major threat to global health.
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Chitin in the fungal cell wall: towards valorization of spent biomass of Aspergillus niger
Aspergillus niger is an important industrial producer of organic acids and enzymes producing large amounts of spent fungal biomass.
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Optimizing antifungal treatment through pharmacometrics: dosing considerations to enhance outcome
Fungal infections pose a significant threat to individuals with compromised immune systems and despite advancements in diagnosis and treatment, they continue to jeopardize patient’s health.