How are carbohydrates processed by the immune system? Can carbohydrates be used to trigger T-cells against other conjugated antigens? Can they be used as adjuvants?

Promotor: G.A. van der Marel, Co-Promotor: J.D.C. Codée

One of the main challenges in the development of an effective anti-cancer vaccine is the generation of an adequate and directed cellular immune response.

Navarro Paredes

This thesis systematically studies the physicochemical properties of non-planar, propeller-shaped, polycyclic aromatic hydrocarbons. The synthesis of several so-called propellerenes is described on a gram scale, using optimized procedures aimed at using less hazardous reagents and reducing the amount…

Science, Leiden Institute of Chemistry (LIC)

This Thesis focuses on the design and synthesis of ADP-ribosylated compounds that can be applied in biological studies.

The inverse electron demand Diels-Alder (IEDDA) pyridazine elimination emerged in 2013 as a new bioorthogonal reaction and constitutes a prime example of what is now known as dissociative bioorthogonal chemistry. The research described in this Thesis aims to develop synthetic strategies which enable…

A structural investigation of coiled coil peptides used as membrane fusogens, mimicing naturally occuring coiled-coil fusion proteins. Synthetic modifications have been made to alter lipid attachment, secondary structure and to insert photoactive azobenzene moieties for active control over coiled coil…

Phosphorylation affects all four major biomolecules – proteins, lipids, carbohydrates and nucleic acids – and plays a pivotal role in the most fundamental cellular functions.

Synthetic microswimmers take an important place within the interdisciplinary field of active soft matter.

The Supramolecular & Biomaterials Chemistry group comprises the PIs Alexander Kros, Roxanne Kieltyka, Gregory Schneider and Sander Wezenberg, and is active in the field of self-assembly of amphiphilic peptides and applying them in supramolecular chemistry.

Research at the BIOSYN group is comprised of the following research themes:

The research in the Biosyn group is focused on the design, synthesis and function of the four major types of biomolecules: nucleic acids, carbohydrates, peptides and lipids and hybrid structures thereof. These biomolecules and their derivatives are used in drug discovery and chemical biology, to develop…

PhD candidates carry out a programme of independent research and additional (limited) course work, culminating in production of a PhD thesis in typically 4 years.

We investigate emergent structures and dynamics of soft materials self-assembled from microscopic constituents.

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…

As a student in the MSc Chemistry programme offered by the Leiden Institute of Chemistry (LIC) you will focus your studies on one of the two main research areas of the LIC. Students in the research area Chemical Biology will study fundamental biological and biomedical problems to understand physiological…

The research described in this Thesis was aimed at designing and synthesizing nature-inspired compounds as part of TB vaccine discovery.

The mission in this research group, headed by Ad IJzerman, is to design and synthesize novel and better ligands for drug targets. Drug discovery is a lengthy but inspiring adventure. It is often an interplay between academic institutes and pharmaceutical industry, in which scientists at university develop…

Synthetic hydrogels that mimic the natural extracellular matrix in the biophysical and biochemical cues it provides to cells are in high demand, however the cell phenotypes as they are observed in vivo in numerous cases have yet to be attained.

The main goal of the THEOR CHEM group, headed by Prof. Geert-Jan Kroes, is to characterize, and to accurately predict the outcome of chemical reactions at gas-solid and liquid-solid interfaces. Here the solid surface is typically a metal or an ice surface. These goals are important to many areas in…

Can cyclic peptides provide a new generation of antibiotics?

The Leiden Institute of Chemistry (LIC) is the basis for research and collaborations of the Leiden chemistry groups. Chemistry is the central science enabling a healthy future in a sustainable society. Chemistry researchers at Leiden University take a fundamental approach in finding tailored solutions…

Promotores: Wim Jiskoot; Ferry Ossendorp

The Leiden Institute of Chemistry actively participates in several national research schools for MSc and PhD students. These schools are consortia that stimulate collaboration between research groups of the different participating Dutch universities. The research schools also offer advanced training…

Alexander Kros studies supramolecular systems in a biological environment. The unifying theme between the projects in my lab is specific molecular recognition, i.e. the intermolecular interaction between complementary molecules with high affinity and selectivity. Studying, imitating and dissecting processes…

The close interaction between organic chemi stry and biology goes back to the late 18th century, when the modern natural sciences began to take shape. After synthetic organic chemistry arose as a discipline, organic chemists almost immediately began to pursue the synthesis of naturally occurring compounds,…

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

Research within our group revolves around the atomic structures of large bio-molecules and their complexes.

Science, Leiden Institute of Chemistry (LIC)

The chemical industry must continue to innovate for a more sustainable, healthier society. The reseachers from the Leiden Institute of Chemistry (LIC) contribute by applying their knowledge to themes such as sustainability, energy and health.

For his significant original contributions in the field of carbohydrate research, chemist Jeroen Codee will be awarded the biennial Carbohydrate Research Award for Creativity in Carbohydrate Chemistry.

Science, Leiden Institute of Chemistry (LIC)

Can the venom of snakes, scorpions and other animals be sources of new antibiotics?

The research aim of the Catalysis and Surface Chemistry group headed by Prof. Marc Koper is to probe and understand chemical reactions on well-defined, mostly single crystalline, surfaces at the molecular level.

If mankind wants to survive into the 22nd century, we will need to change the way we live drastically. The human impact on our planet is everywhere, we are changing the atmosphere, the oceans and the land, leading to global warming, climate change, loss of biodiversity and pervasive pollution. There…

The long term goal of the Biophysical Organic Chemistry/SSNMR group, headed by Prof. Huub de Groot, is to reach an understanding of structure, dynamics and functional mechanisms of membrane proteins and self-organized biological assemblies and to translate this knowledge into new concepts for nano-devices,…

Promotor: G.A. van der Marel, Co-promotor: D.C. Codée

Two excellent young chemists, Jeroen Codée and Sander van Kasteren, have received an ECHO grant for €260,000 from the Netherlands Organisation for Scientific Research (NWO). This funding will allow them to begin their research projects.

This thesis explored the question whether Scrum methodology might function as an appropriate scaffold to enhance students’ learning and to support teachers in context-based secondary chemistry education.

Science, Leiden Institute of Chemistry (LIC)

Science, Leiden Institute of Chemistry (LIC)

Although sugars are widely used in biological and medical research, their synthesis is still badly understood. Jeroen Codée has received a Vici grant of 1.5 million euros for systematically studying the production of sugars. ‘I want to genuinely understand the reactions.’

Science, Leiden Academic Centre for Drug Research (LACDR), Leiden Institute of Chemistry (LIC)

In the large gas clouds between the stars, chemical reactions take place under extreme conditions, giving rise to both small molecules, such as water and common salt, as well as large complex molecules that can serve as the building blocks of life. This is known as astrochemistry and it is something…

Plant-microbe interaction resulted in different physio/chemical responses by host plant and interacting rhizobacteria.

Although Sander Wezenberg just started working in Leiden in March this year, he already managed to win a Vidi grant from NWO. Inspired by nature, Wezenberg wants to bring synthetic molecules to life and teach them to communicate. But who exactly is Wezenberg and what drives him?