In this thesis, bioorthogonal chemistry is combined with correlative light-electron microscopy to selectively label and study pathogenic intracellular bacteria within the host immune cell.

Promotores: Prof.dr. A.G.G.M. Tielens, Prof.dr. L. Kaper (UvA)

The growing demand of energy indicates that global energy resources in the form of fossil fuels will not be sufficient in the future. In order to solve potential future energy problems development of a sustainable hydrogen economy is highly desirable.

A key step in the synthesis of oligosaccharides and glycoconjugates is the formation of the glycosidic bond.

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

Antibiotic-resistant bacteria pose a major health threat. Addressing this challenge requires among others the development of new antibacterial compounds. The research described in this thesis focuses on discovering novel antibiotics from soil bacteria, specifically Streptomyces and Paenibacillus.Despite…

Single-molecule spectroscopy has become a powerful method for using organic fluorescent molecules in numerous applications.

Transplantation of labial salivary glands to the eyelids for patients with dry eye appears to give excellent results clinically.

This thesis pioneers diatom molecular identification and quantification through genome-scale methods, with four key aims: (i) reviewing DNA/RNA sequencing methods in aquatic biomonitoring to highlight their strengths and limitations;

Stellar feedback is a crucial ingredient in the evolution of galaxies.

This thesis investigates a pharmacological challenge model induced by Toll-like receptor 7 (TLR7) activation, focusing on skin inflammation and its implications for early drug development.

The mycorrhizal symbiosis is among the most widespread species interactions on Earth⁠. This thesis focuses on orchid mycorrhiza, a unique mycorrhizal type that has caught scientists’ attention for centuries⁠.

In this work, we illustrate unconventional approaches towards the fabrication of edge functionalized graphene nanostructures and bidimensional architectures in polymeric and metallic supports, with an outlook towards molecular sensing devices.

All life on earth contains DNA, which is used to store biological information. Organisms compact their DNA in order for it to fit inside their cell(s).

Streptomyces are bacteria abundant in soil that participate in diverse and complex interactions. These bacteria are the main producers of the antibiotics we currently use in the clinic.

Freshwater is an important resource, but at a great risk of species decline due to habitat loss, pollution and over-exploitation, and invasive alien species.

Promotores: Prof.dr. E.F. van Dishoeck, Prof.dr. C.P. Dullemond

The filamentous bacteria Streptomyces are widespread inhabitants of terrestrial soils.

A dense region of a gaseous and dusty cloud collapses to form a protostar surrounded by a disk and an envelope. This thesis uses both observations and models to study physical and chemical conditions of these protostellar systems which are likely where planets start to form.

Polycyclic aromatic hydrocarbons (PAHs) are the most abundant class of organic compounds in space. The PAH field evolves from the constant interaction between experimentalists, theorists, modellers and observers. While laboratory research and quantum chemical calculations together set up the molecular…

Promotor: Prof.dr. E.F. van Dishoeck

Anthe Janssen studeerde ‘summa cum laude’ af voor de masteropleiding Chemistry. Hij gebruikte NMR methoden om inzicht te krijgen in de synthese en het gedrag van bio suiker.

Naar schatting bestaat de wereldbevolking over twintig jaar uit ongeveer 8,7 miljard mensen, terwijl dat aantal nu 7,3 miljard is. Deze groei, gecombineerd met de bijbehorende groei in consumptie en de verbeteringen in levensstandaarden, zal resulteren in een enorme groei in de vraag naar voedsel, verbruiksgoederen,…

The aim of the research described in this thesis was to use structure-based design to optimise multiple properties of aryl sulfoxide monoacylglycerol lipase inhibitors as anti-inflammatory analgesics.

Het chemische biologie-onderzoek bij het Leids Instituut voor Chemisch Onderzoek (LIC) is gericht op het begrijpen van biologische processen op moleculair niveau, om zo onze kennis te vergroten over gezondheid en ziekte van de mens.

Promotor: G.J.B. van Ommen

Is MST de studie die bij je past? Dan kun je je inschrijvenaan de hand van onderstaand stappenplan. Je schrijft je in bij de Universiteit Leiden. De Universiteit Leiden zorgt voor je inschrijving bij de TU Delft.

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Lysosomal storage disorders (LSDs) are a group of orphan diseases characterized by lysosomal dysfunction or impaired lysosomal catabolism and affect collectively about 1 in 5000 live births.

Promotor: Prof.dr. H.P. Spaink, Co-promotor: Prof.dr. A.H. Meijer

Promotor: B. vd Water, T. Schmidt, Co-Promotor: E.H.J. Danen

As a virtually inexhaustible source, solar energy plays a major role in future global energy scenarios.

In surface science there is great effort to move from studying simple, flat model surfaces in vacuum to investigating more complex model catalysts in gas environments (in situ). This thesis gives three examples of such studies using microscopy and spectroscopy.

Met de NMR faciliteit doen we onderzoek naar de synthese van paramagnetische moleculen om kennis te vergaren over de structuur en dynamiek van eiwitten. Deze kennis kan dienen als basis voor een medicijn dat zich hecht aan een eiwit of voor de ontwikkeling van vaccins. Medicijnontwikkeling is één van…

Promotor: Prof.dr. M. Danhof, Co-promotor: O.E. Della Pasqua

Hydrogen peroxide (H2O2) is an important bulk chemical that is used in various industrial processes. More than 95% of the H2O2 used in industry is made via the anthraquinone process during which a large amount of energy is going to waste.

Na het afronden van de bacheloropleiding volgen verreweg de meeste studenten de masteropleiding.

Biological polymers, including proteins and the genome, undergo folding processes crucial for their proper functioning. Even slight changes in the folding structure of these biopolymers can have significant implications, leading to the development of various pathological conditions, such as neurodegenerative…

Promotores: C.A.M.J.J. van den Hondel, V. Meyer, Co-promotor: A.F.J. Ram

Multicellular giant algae Chara species have been widely used in physiological studies for decades.

This thesis considers multi-prover commitment schemes whose security is based on restrictions on the communication between the provers.

Promotor: Bas Edixhoven, Promotor: Qing Liu

Freek Janssen kreeg tijdens de FIGON Dutch Medicine Days 2015 op 5 oktober in Ede de KNCV Farmacochemie prijs voor beste presentatie uitgereikt. Janssen ontvangt deze prijs voor zijn presentatie

De Leidse biotech-startup Azafaros heeft met succes een financieringsronde afgerond waarin 25 miljoen euro aan investeringen zijn toegezegd voor het ontwikkelen van behandelingen van zeldzame metabole aandoeningen. Het bedrijf heeft een exclusieve licentie voor een reeks nieuwe gepatenteerde verbindingen,…

Een nieuwe techniek, die gebruikt maakt van fluorescente beeldvorming om het gedrag van enzymen te volgen, kan de medicijnontwikkeling voor kanker, ontsteking en nierziekte bevorderen. Onderzoekers van de Universiteit van York en Universiteit Leiden hebben deze bevindingen in Nature Chemical Biology…