Promotor: B. van de Water

This proposed research uses ego-documents from visual artists that were not intended for publication to reassess the scholarly debate on the demise of the Russian Avant-garde aesthetic in the twenties and early thirties of the 20th century.

Image-Pro Plus, ImageJ, Cell Profiler, R, Knime en NIS-elements

This thesis seeks to investigate how cancer-associated mutations affect the pharmacological properties of selected GPCRs—primarily A2AAR and 5-HT2CR—through a combination of ligand binding assays, signaling readouts, kinetic profiling, and cellular functional assays.

Promotor: Huub J.M. de Groot, Co-promotor: Francesco Buda

Integrins play an essential role in multicellular life by connecting cells to the extracellular matrix.

Image segmentation is a fundamental task in computer vision, with applications ranging from medical diagnostics to archaeological research.

The first steps are made in personalised cancer vaccination strategies, which aim to induce a more specific immune response with fewer side effects. The activation of cytotoxic T cells is crucial for an effective immune response.

Promotors: W. Jiskoot; G.J. Witkamp, Co-promotor: M.R. Nejadnik

Endothelial dysfunction and microvascular diseases are key drivers of cardiovascular disease, the world's leading cause of death.

The overarching goal of this thesis is to set the foundations, but also make the first essential steps towards establishing a comprehensive, mesoscopic, hydrodynamic theory of epithelial tissues. The stage is set by an exhaustive study of topological defects in passive p-atic liquid crystals, singularities…

In 2020 zijn de stimuleringsprogramma's van de Universiteit Leiden gestart, met als één van de programma's regeneratieve geneeskunde.

In previous studies at our laboratory it was demonstrated that drug exposure of HepG2 cells can lead to an altered TNFα-induced NF-κB oscillatory phenotype, concurrent with a synergistically increased sensitivity for TNFα-induced apoptosis.

In this thesis, we focus on novel proteins/mechanisms that regulate integrin-adhesion mediated mechano-transduction.

This doctoral thesis is an effort to understand how lipid phase-separation induced by diacylglycerol analogues in lipid-based nanoparticles affects their in vivo behavior, leading to specific nanoparticle-protein communications and selective cell targeting.

In photoactivated chemotherapy (PACT), a biologically active compound is caged by a light-cleavable protecting group.

This thesis focuses on the synthesis, characterization and performance towards CO2 electroreduction of mono and bi-metallic particles based on p-block metals

Promotores: H.S. Overkleeft, G.A. van der Marel, Co-Promotor: R.G. Boot

Despite their ecological, cultural, and economic importance, lion (Panthera leo) populations in Kenya are declining rapidly due to retaliatory killings following livestock depredation, depletion of wild prey, habitat loss driven by human activities, climate change, and disease.

Medewerkers en studenten van de Universiteit Leiden protesteren 25 november in Den Haag tegen de miljardenbezuinigingen op het hoger onderwijs. ‘Deze bezuinigingen zijn een heel slecht idee en dat willen we laten zien,’ zegt Claire Weeda van WOinActie. ‘Wetenschap en onderwijs zijn essentieel voor onze…

Uit onderzoek van de NOS blijkt dat gokbedrijven, waaronder Holland Casino en de Nederlandse Loterij, meer invloed hadden dan verslavingsdeskundigen bij de totstandkoming van nieuwe regels over gokreclames.

Twee jaar geleden trad Ingrid van Engelshoven aan als minister op OCW. 'Academische onrust is het voorlopig resultaat van het beleid van deze D66-minister, dat zich kenmerkt door een volledig gebrek aan visie op wetenschap in brede zin,' betogen Leidse hoogleraren en D66-leden Hermen Overkleeft en Sjaak…

Promotie

This thesis describes the synthesis, analysis of various tetrazine bearing compounds and use in bioorthogonal chemistry.

In human cells, a meter-long DNA is condensed inside a micrometer-sized cell nucleus. Simultaneously, the genetic code must remain accessible for its replication and transcription to functional proteins.

The molecular mechanisms that instigate a healthy cell to become malignant are fueled by (epi)genetic alterations in so-called driver genes.

Kinase inhibitors are key therapeutic agents, particularly in oncology, yet their clinical efficacy is often hampered by off-target effects and limited understanding of their cellular target profiles.

Promotor: Roeland M.H. Merks

Drug induced organ toxicity is the main problem of the drug development and drug usage in the clinic. The liver and kidneys are the most sensitive organs towards drug induced toxicity.

The function of TLRs in innate immunity has aroused worldwide attention soon after its discovery. Because of the broad functions of TLR2 in innate immunity, the drive for the development of TLR2-targeted vaccines or therapeutic treatments has accelerated in the last decades.

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. van Veen & Prof.dr. W. de Boer (Wageningen University)

The applications of studying the early development of insects range from agriculture to material science.

Synthesis and application of chemical biology tools to study immunomodulatory signaling lipids.

The investigations described in this thesis lay out strategies aimed at advancing antibiotic research and development. The examples presented revolve around two main approaches: understanding drug-target interactions and target identification.

Promotores: Prof.dr. W.J.G.M. Peijnenburg & Dr. M.G. Vijver

This thesis describes the functional analysis of the Arabidopsis AHL15 gene.

Lysosomal acid glucosylceramidase (GBA1) is a lysosomal enzyme that degrades glucolipids with its main substrate being glucosylceramide (GlcCer). Defects in the GBA1 gene lead to glycosphingolipidosis Gaucher disease (GD), in which the hydrolysis of GlcCer is impaired and therefore, it accumulates in…

Promotor: J.G.E.M. Fraaije, Co-Promotor: A. Kros

Promotor: H.P. Spaink, Co-Promotor: A.H. Meijer

Promotores: A.H. Meijer, H.P. Spaink

The type-IV secretion system (T4SS) is a machinery able to transfer DNA and proteins between bacteria and in certain cases also to eukaryotic cells.

Breast cancer is the most common cancer in women worldwide. Metastasis, the process by which cancer cells spread to other parts of the body, makes treatments less effective. It is important to unravel the mechanism of metastasis.

This thesis tackles the difficulty of predicting the liver’s clinical response to novel therapies, a challenge arising from interspecies differences and limitations of existing in vitro models.

Promotor: J. Kuiper

To improve treatment of breast cancer patients it is important to understand all stages of breast cancer from initiation to in situ disease and progression to invasive disease. In this thesis we use intraductal injections of patient derived tissue to model ductal carcinoma in situ and invasive breast…

In het onderzoeksprogramma Drug Discovery & Safety zijn we geïnteresseerd in de werkzaamheid en veiligheid van nieuwe medicijnen en nieuwe manieren om deze aspecten te bepalen. Daarvoor combineren we geavanceerde imaging en high-throughput screening technieken met computationele aanpakken zoals chem-…

Studies naar perceptuele besluitvorming presenteren dezelfde stimulus doorgaans herhaaldelijk tijdens een experimentele sessie, maar negeren de volgorde van deze observaties, waarbij wordt uitgegaan van een onrealistische stabiliteit van beslissingsstrategieën tijdens proeven. Maar zelfs ‘stabiel’,…