260 search results for “vaccination” in the Public website
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Gideon Kersten
Science
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A synthetic vaccine against meningococcus
Leiden chemists recreated the bacterial capsule of meningococcus in the lab. With a few modifications, these capsules can serve as an extra safe and effective vaccine against these notorious bacteria, which can cause, for example, meningitis. PhD candidate Jacopo Enotarpi and his team published the…
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Development of an intradermal tuberculosis vaccine by combining dissolvable microneedle arrays and Mycobacterium tuberculosis antigen-containing
Mycobacterium tuberculosis (Mtb), the pathogen causing tuberculosis (TB), is the leader among all pathogens responsible for the most human deaths today and it is considered as one of the top 10 causes of death worldwide. There is an increasing occurrence of multidrug-resistant and even totally drug-resistant…
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Development of an effective, safe, and painless intradermal tuberculosis vaccine based on microneedles loaded with antigen-containing nanoparticles
Tuberculosis (TB) is a major global health problem caused by the bacterium Mycobacterium tuberculosis (Mtb). In 2015, there were estimated to be 10.4 million new cases and 1.8 million deaths ascribed to TB, making it one of the top 10 causes of death worldwide. Unfortunately, the only current registered…
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LUMC and CHDR to test Janssen Vaccines’ candidate corona vaccine
Leiden University Medical Center (LUMC) and the Centre for Human Drug Research (CHDR) are taking part in the phase 2 clinical trial of Janssen Vaccines’ candidate coronavirus vaccine. The vaccine will be tested on 45 test participants in Leiden from 14 September onwards.
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Poly-(lactic-co-glycolic-acid)-based particulate 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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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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Testing vaccines without laboratory animals?
The quality of vaccines is still often tested by using laboratory animals. That has to change, according to researchers from Leiden University and the vaccinological institute Intravacc. Together they went searching for a test method that makes animal testing unnecessary. The first promising results…
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Vaccination policy should respond to the motivations of vaccine refusers
Research by Leiden University Medical Center (LUMC), The Hague University of Applied Sciences and Erasmus University Rotterdam shows that about 15 percent of Dutch people do not want to be vaccinated. If better use were made of the knowledge of local professionals such as GPs, it would be easier to…
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Sugarcoating the search for a new vaccine
A vaccine based on sugar coats does have the potential to combat a multi-resistant staphylococcus. That is what Jeroen Codée and his colleagues from Utrecht state in Nature. In doing so, they are contradicting the earlier conclusions of German colleagues.
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Bram Slütter
Science
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Johan Kuiper: vaccin tegen aderverkalking
Ontwikkelen van een vaccin tegen aderverkalking
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Aart Hendriks on mandatory vaccinations
According to Dutch Prime Minister Mark Rutte, there are currently no plans to introduce mandatory vaccinations in the Netherlands. In surrounding European countries, however, the situation is very different. Professor of Health Law and deputy judge Aart Hendriks: ‘The idea that freedom rights are more…
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with a synthetic long Peptide and poly(i:C): a defined adjuvanted vaccine for induction of antigen-specific T cell cytotoxicity
For effective cancer immunotherapy by vaccination, co-delivery of tumour antigens and adjuvants to dendritic cells and subsequent activation of antigen-specific cytotoxic T cells (CTLs) is crucial. In this study, a synthetic long peptide (SLP) harbouring the model CTL epitope SIINFEKL was encapsulated…
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One step closer to pain-free vaccinations
Microneedles are a promising tool for the painless administration of vaccines through the skin. But, are these minuscule needles really effective? PhD student Pim Schipper of the Leiden Academic Centre for Drug Research investigated various factors of vaccination via the skin and discovered, among other…
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mRNA boosters are the most effective upon receiving Janssen vaccination
A coronavirus booster shot provides a better immune response against COVID-19 than a single vaccine dose. mRNA boosters are the most effective upon receiving Janssen. These are the results of a collaborative study between several organisations, including the Leiden University Medical Center (LUMC).…
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ERC grant to improve post-vaccination protection in low-income countries
Maria Yazdanbakhsh, Professor of Parasitology at the Leiden University Medical Centre (LUMC), has been awarded an ERC Advanced Grant of 2.5 million euros. She will investigate why people in Africa and Southeast Asia respond less to certain vaccines than Europeans. Her goal is to find a solution for…
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Janssen COVID-19 vaccine approved for use in EU
The Janssen-Cilag International N.V COVID-19 vaccine has received authorization for emergency use by the European Medicines Agency (EMA) on March 11. The vaccine was developed with fundamental support from the Molecular Virology group of the Leiden University Medical Centre (LUMC).
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Aart Hendriks not ruling out compulsory vaccination
Now the number of people with COVID-19 is increasing and we are faced with stricter measures once again, the question arises whether compulsory vaccination could be allowed.
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Cancer vaccine packaged in minute particles
Leiden researchers have carried out successful tests using a new method of packaging a cancer vaccine in nano-particles. The new vaccine has induced a strong immune reaction in mice. The researchers believe that this method can make an important contribution to the treatment of cancer. Their findings…
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ESOF session on vaccines: ‘Infectious diseases know no borders’
How can Europe lead the way in vaccine development that is fast and for all? To answer this pressing question, Professor of Vaccinology Meta Roestenberg is holding a panel session on 14 July at the EuroScience Open Forum in Leiden.
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Tiny, pain-free vaccinations: microneedles and nanoparticles
If it’s up to PhD student Guangsheng Du, patients don’t need to worry about big needles anymore. At the Leiden Academic Center for Drug Research (LACDR), he studied the use of microneedles and nanoparticles as a new vaccination system. ‘I want to create a more patient-friendly delivery method.’ He defends…
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Leiden collaboration supports development of vaccine against coronavirus
The Department of Medical Microbiology of Leiden University Medical Centre (LUMC) will investigate the efficacy of a new experimental vaccine from the pharmaceutical company Jansen against the coronavirus. The research is being conducted in collaboration with the The Janssen Pharmaceutical Companies…
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The Bulgarian governments' response to Covid-19
Emerging from the first wave relatively unscarred to an increase in infections. This research analyses the response from the Bulgarian government to Covid-19.
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Testing of a malaria vaccine gets the green light
Researchers at Leiden University Medical Center (LUMC) and Radboud university medical center have been given the green light to deliberately infect volunteers with malaria in order to test a highly promising vaccine on them.
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New insights for improved pertussis vaccines - Press release -
Researchers in Bilthoven, The Netherlands, have recently unraveled the defense against whooping cough bacteria in unprecedented detail. The outcome of the project, conducted at Intravacc (Institute for Translational Vaccinology) in Bilthoven, provides opportunities for a new approach in the development…
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Can businesses and employers demand proof of vaccination?
Can bars, gyms and travel providers refuse customers who have no proof of vaccination? And can an employer dismiss employees who are not vaccinated? Reports in the Dutch media about travel organisations and a dance instructor who are refusing customers who have not yet been fully vaccinated have sparked…
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Therapeutic vaccine boosts survival rate in cervical cancer patients
A therapeutic vaccine against HPV-16 (type 16 human papillomavirus) improves the survival rate in cervical cancer patients. A new study by ISA Pharmaceuticals B.V. (a Leiden-based biotechnology company) and the Leiden University Medical Center (LUMC) shows that this vaccine produces a more robust response…
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First clinical trial with genetically modified malaria vaccine completed
In an innovative study, Radboudumc and LUMC jointly tested a candidate vaccine based on a genetically weakened malaria parasite. The results of this clinical trial, published in Science Translational Medicine, show that the vaccine is safe and elicits a defense response against a malaria infection.
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Total Synthesis of Alginate and Zwitterionic Sp1 Oligosaccharides
The work in this thesis has been focused on two subjects. The first is the assembly of alginate oligosaccharides and the generation of building blocks for the enzymatic synthesis of alginate, and the second is the total synthesis of large fragments of the zwitterionic SP1 polysaccharide.
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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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Five times more Covid vaccines from a vial with skin injection
Not ten but fifty Covid vaccines from one vial. This is possible if the vaccination is delivered into the skin rather than the muscle, research by internist and infectious disease specialist Anna Roukens from the LUMC has shown. EenVandaag reported on this important discovery, which could have huge…
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Aart Hendriks: Compulsory vaccination is in the interest of public health
Yesterday, the House of Representatives in the Netherlands rejected a motion that would completely rule out an obligation to get vaccinated. Compulsory vaccination in the Netherlands can be considered if public health is at stake. Professor of Health Law Aart Hendriks of Leiden University discussed…
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Towards controlled microneedle-mediated intradermal immunization
Traditionally, vaccines are administered intramuscularly using conventional hypodermic needles, which cause pain and distress. Microneedles are very short needles (smaller than 1 mm) that are practically invisible to the naked eye.
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Systems vaccinology: molecular signatures of immunity to Bordetella pertussis
Promotor: G.F.A. Kersten, W. Jiskoot, Co-promotor: B. Metz
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Jeroen Codee
Science
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Bacterial glycomimetics: synthesis and applications
This work has described synthetic strategies towards well-defined structures resembling capsular polysaccharide (CPS) fragments, CPS mimics, teichoic acid (TA) fragments as well as a third-generation ring-closing tandem metathesis (RCM) linker to better exploit the potential of automated synthesis.
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Chemical Synthesis of Fragments of Streptococcal Cell Wall Polysaccharides
This thesis describes the design and synthesis of fragments of various cell wall carbohydrates of the Streptococcus species, including the branched Group B-specific antigen (GBC) of Group B Streptococcus, glycerol phosphate (GroP) modified group A carbohydrate (GAC), and the O-acetylated type 1 capsular…
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The immune system in action against cervical cancer
In the hunt for a vaccine against cervical cancer, fundamental knowledge about the immune system and organic chemistry have been brought together and have already resulted in a vaccine that is now being tested in clinical trials. Scientists are now working hard on an improved variant.
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Transvac2
TRANSVAC is a collaborative infrastructure project funded by the European Commission (EC), initially under the 7th Framework Programme (FP7) and currently under Horizon 2020. The project is a joint effort of leading European groups working in the field of vaccine development, and is coordinated by…
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Development of synthetic procedures towards immunostimulating carbohydrates
Promotor: G.A. van der Marel, Co-Promotor: J.D.C. Codée
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Immune Activation and Tolerance
The Immune Activation and Tolerance group is headed by Dr. Bram Slütter. Vaccination is an experimental, but promising, treatment strategy for atherosclerosis. Previous work has shown that immunization of mice with modified LDL particles can reduce atherosclerotic lesion development, however such vaccines…
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Key publications
Key publications of the Skin Barrier and Vaccination group.
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Construction and exploration of modular goldnanoparticles for glycan-based immune-interventions of worm infections
Chiodo
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Overview
Our research is aimed at a smoother and speedier transition from preclinical research to pharmacological interventions, and the delivery of drugs in the human body by use of small molecules and biologics.
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Molecular Signatures of the Evolving Immune Response in Mice following a Bordetella pertussis Infection
Worldwide resurgence of pertussis necessitates the need for improvement of pertussis vaccines and vaccination strategies.
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Maria Yazdanbakhsh
Faculteit Geneeskunde
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Oncode Accelerator
Providing each cancer patient with the right treatment remains a challenge. Oncode Accelerator aims to change this by innovating the way we develop cancer treatments, thus ensuring the patient is at the heart of the process. Leiden University, the LUMC and other partners will implement this new way…
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Hirschman, Accountability in Global Governance
Political Scientist Gisela Hirschmann (Leiden University) asks how international organisations can be compelled to comply with respect human rights. She finds that this is done through ‘pluralist accountability’: external third parties such as courts, NGOs, or regional organisations holding international…
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Development of nanoparticulate adjuvants based on aluminium salts
The aim of this thesis was to develop aluminium salt-based nanoparticles that may ultimately be used as adjuvant in human vaccines.