PhD defence

How were (post) colonial migrants included in post-war welfare systems?

This dissertation combines the use of defined microenvironments, high-resolution fluorescence microscopy, and time-resolved analysis, to study intracellular and cellular motility.

This research deals with the royal houses of the Vijayanagara Empire and four of its successor states: Ikkeri, Tanjavur (under both the Nayaka and Bhonsle rulers), Madurai, and Ramnad. This study is thus concerned with dynastic politics and imperial legacies in south India between the 14th and 18th…

Parkinson's disease is the second most common neurodegenerative disease in the world. One of its symptoms is the loss of dopaminergic neurons in the substantia nigra pars compacta.

The lecture series

In The Hague, the Leiden Centre of Data Science (LCDS) in close collaboration with the Centre for Professional Learning (CPL) is developing a Legal Technologies programme. They do so in cooperation with three faculties of Leiden University, namely the Faculty of Governance and Global Affairs (FGGA),…

Analysing the ways in which immigration structurally challenges and changes the organization and conceptual boundaries of national welfare states.

Book by Soledad Valdivia Rivera

Religion, Class, and the Postwar Development of the Dutch Welfare State. Dennie Oude Nijhuis.

Promotor: Prof.dr. J. Kuiper

The research described in this thesis focused on the use of bioorthogonal antigens to investigate immunological processes in antigen presenting cells. Bioorthogonal antigens are antigenic proteins produced through recombinant expression in a methionine auxotrophic E. coli strain.

Promotores: Prof.dr. H.J.M. de Groot, Prof.dr. J. Matysik (Universitaet Leipzig)

With the help of quantum mechanics, digital quantum hardware may be able to tackle some of the problems that are too difficult for ordinary computers. But despite these expectations and the ongoing effort of the research community, reliable quantum computers are not yet realized in a lab setting.

Identifying and explaining change in the structure of central state bureaucracies and the determinants of survival of individual public organizations are two closely related areas of research in public administration. We aim to bridge the gap between these two main strands of studies of organizational…

Promotores: B. van de Water; P. Hogendoorn; J. Bovée Co-Promotor: E.H.J. Danen

An international team from the Netherlands, France, Norway and Austria demonstrate how new sequencing technologies can be used to efficiently generate the genome, DNA, sequence of an endangered animal, the European Eel.

On Wednesday 25 June 2025 Dechun Zhang successfully defended a doctoral thesis and graduated.

This thesis describes our search to identify and understand possible regulatory mechanisms of integrin α6β4 in cell-matrix adhesion and intracelular signaling.

Researchers at the Leiden University Medical Centre (LUMC) have managed to culture human heart muscle cells on a massive scale. This is an exceptional achievement because it is very difficult to replicate heart muscle cells outside the body. Using a special technique, the researchers have now created…

On 23 April 2021, Professor Alfred Vertegaal from the Department of Cell and Chemical Biology at the Leiden University Medical Center (LUMC) delivered his inaugural lecture ‘Unraveling and exploiting cellular communication codes’. Vertegaal used the opportunity to describe how research in the field…

During illness, the stiffness or viscosity of cells can change. Tom Evers demonstrated this by measuring such properties of human immune cells for the first time. ‘The stiffness of certain cells could be a way to make a diagnosis,’ Evers said. He defended his thesis on March 26th.

Technological developments are rapidly advancing. The Leiden Legal Technologies Program was on the agenda of the Advisory Committee at their second meeting held on 15 October. The decision to start the program in January 2021 was taken unanimously. It was the official moment to announce the completion…

The transition from single cells to multicellular organisms was a key step in evolution. Researchers from Leiden and Amsterdam developed a mathematical model that explains how this transition may have come about. They suspect cooperating cells may correct each other’s mistakes. Publication in eLife…

Researchers and clinicians at Leiden University Medical Centre (LUMC) are about to begin a milestone clinical study. It will be the first time a stem cell gene therapy developed in the Netherlands is used in a clinic. The therapy will be used to treat children with SCID, a rare disorder where children…

Tens of thousands of soldiers and civilians have died as a result of Russia’s invasion of Ukraine in February 2022 and the continuing armed conflict. Many forms of critical infrastructure have been destroyed. Much of this devastation has been caused by weapons that utilise forms of artificial intelligence…

Promotor: Prof.dr. H.P. Spaink Co-promotor: Dr. B.E. Snaar

Publication by: Amanda Foks, Gijs van Puijvelde, Jolien Wolbert, Mara Kröner, Vanessa Frodermann, Thomas van der Heijden, Peter van Santbrink, Louis Boon, Ilze Bot and Johan Kuiper. Cardiovascular Research. 2016;111(3):252-261.

The Europa Instituut is pleased to announce that this week a new handbook “EU State Aids” (31 Chapters, 1500 pages) was published.

In a modernist interpretation of migration controls, nation states play a major role. This book challenges this interpretation by showing that comprehensive migration checks and permanent border controls appeared much earlier, in early modern dynastic states and empires, and predated nation states by…

Researchers from the Leiden University Medical Center (LUMC) have successfully used stem cell gene therapy to treat a baby with the severe congenital immune disorder SCID. An important milestone: it is the first time stem cell gene therapy of Dutch origin has been administered to a patient, and also…

Leiden and Austrian researchers have succeeded in further uncovering how a plant cell passes on the growth hormone auxin in a directional manner to the next cell. Three proteins that cling together in a bunch appear to be essential for this important transport process. ‘This discovery solves a crucial…

Bacteria temporarily live without their cell wall if dangerous viruses are near. A remarkable feature, as the cell wall is a sturdy barrier against threats. Still, the discovery has a logical explanation ánd might be of a consequence for fighting pathogenic bacteria, according to Véronique Ongenae,…

Cells in our bodies are often threatened by errors in our own proteins. The FLOW consortium, comprising scientists from various institutions including Leiden, is poised to meticulously map out for the first time how cells control proteins, correcting or removing faulty ones. This endeavour holds promise…

A COVID-19 vaccine that specifically instructs the immune system to produce T-cells rather than antibodies is shown to provide good protection in a mouse model, Leiden University Medical Center (LUMC) researchers report in Nature Communications. According to them, the alternative vaccine may offer a…

Dennis Claessen has been appointed professor of Molecular Microbiology at the Institute of Biology Leiden. With his teaching and research on the cell wall, the professor wants to establish applications in the industry and the medical sector.

How can we prevent drug-induced liver and kidney damage? PhD candidates Marije Niemeijer and Lukas Wijaya investigated what happens in the cells during the onset of this damage: a stress response. Both focused on a different subtopic and made some interesting discoveries.

Toxys, Leiden University and Leiden University Medical Center have agreed immediately to commercialise and also develop further the ToxProfiler technology invented at the two institutions. ToxProfiler allows for rapid toxicity hazard identification of novel and existing drugs, chemicals, and other substances.…

What’s really happening in the space between the cells in your body? With the Collagen Canvas project, students from Leiden University invite you to explore this question by blending science with art. This interactive artwork immerses you in the dynamics of the extracellular matrix—the invisible structure…

Andrei Poama, Assistant Professor at Leiden University, published a piece in the journal of Political Philosophy about social injustice, disadvantaged offenders and the state's authority to punish.