Balsaminaceae is a diverse plant family characterized by a huge floral morphological diversity.

De afdeling Environmental Biology (CML-EB) houdt zich bezig met vraagstukken rondom biodiversiteit en natuurlijke hulpbronnen op het platteland in westerse en niet-westerse gebieden.

This thesis describes the design and synthesis of novel small molecules based on sulfur-containing heterocycles for the inhibition of glycosidases and glycosyltransferases related to Fabry and Pompe disease.

During embryonic growth, cells proliferate, differentiate, and collectively migrate to form different tissues at the right position and time in the body.

Van systeembiologische modellering een centrale pijler van het onderzoek in de biologie maken.

Neurodegenerative diseases pose a large medical and societal challenge. The etiology of these diseases is still poorly understood, which makes drug discovery for these diseases difficult.

LUMC Technology Focus Area (TFA) Data Analytics is een samenwerkingsverband van verschillende onderzoeksgroepen in het LUMC die nieuwe kwantitatieve en computationele methodologie ontwikkelen voor biomedisch en klinisch onderzoek.

The research presented in this thesis explores the chemotherapeutic potential of metal-based compounds as chemotherapy agents, with an initial focus on the synthesis and DNA interaction studies of platinum and palladium compounds utilizing the [Pt(bapbpy)]2+ scaffold. The study identifies intercalation…

Promotor: H.S. Overkleeft, Co-Promotor: B.I. Florea

This thesis focuses on developing new chemical synthesis strategies to produce native ADP‑ribosylated biomolecules with precise structural control.

Promotores: H.A. Udo De Haes, P.M. Brakefield

We developed the bitterling as a unique, well-studied model organism in the area of the evolutionary ecology of brood parasitism. The bitterling-mussel relationship, interspecific mussel host preference, and mussel gill structure are studied in detail, to help understand the developmental adaptation…

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

Neurodegenerative diseases, including Parkinson’s disease (PD), are increasing in prevalence due to the aging population. Despite extensive study, these diseases are still not fully understood and the lack of personalised treatment options that can target the cause of the diseases, rather than the symptoms,…

Design and synthesis of two 3-substituted swainsonine derivatives with the aim to improve the potency and selectivity towards Golgi alpha-mannosidase II.

This thesis describes the synthesis and biochemical evaluation of a variety of cyclophellitol based activity-based probes and inhibitors targeting various endo- and exo-acting retaining glycosidases. In the last two decades a variety of probes and inhibitors for (hemi)cellulose degrading enzymes have…

This thesis describes biochemical investigations of glucocerebrosidase (GBA), the lysosomal β- glucosidase that is deficient in Gaucher disease (GD).

Carbohydrates, alongside proteins and nucleic acids, constitute a crucial and versatile family of biomolecules present in all life forms. They manifest as monosaccharides, oligosaccharides, and polysaccharides, covalently bonded to proteins and fats. Carbohydrates are integral to plant and arthropod…

Het FAIRDOM-consortium is een open initiatief van verschillende partners, waaronder financieringsprogramma's, grote consortia, instituten, kleine groepen en individuen.

In this thesis we will explore the use of fuzzy systems theory for applications in bioinformatics.

In this thesis, we describe the potential of cell mechanical phenotyping for immune cell characterization, diagnosis, drug testing, as well as treatment of disease.

In this thesis, the discovery and optimization is described of chemical tools to study the N-acylethanolamine (NAE) biosynthetic pathway.

Thomas Bakkum en Tom van der Wel, promovendi bij het Leids Instituut voor Chemisch Onderzoek, winnen poster awards bij de EMBL Chemical Biology Conference 2018 in Heidelberg.

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

This thesis presents the first synthetic peptides ADP-ribosylated on serine, threonine, tyrosine, arginine and cysteine.

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

This thesis describes the development and optimization of the first molecular tools to study the enzyme PLA2G4E.

Despite being the object of intense study, embryonic development has been difficult to model due to a number of reasons. First, complex tissues can be comprised of many cell types, of which we probably only know a subset.

Promotores: H.S. Overkleeft, G.A. van der Marel, Co-promotor: B.I. Florea

Less than 1 in 10 drug candidates that enter phase 1 clinical trials actually gets approved for human use.

In a typical glycosylation reaction, a donor is activated to form a (variety of) electrophilic species which can react with a nucleophilic acceptor, following a reaction mechanism having both SN1 and SN2 character.

Nature uses a special class of histone proteins, histone variants, to modulate the properties of chromatin at defined genomic locations.

We use DNA strands to stabilize few-atom silver clusters, which show unique optical and chemical properties. This thesis involves the study of these constructs for various applications.

The thesis describes the development, synthesis and biological evaluation of several proteasome inhibitor designs. Mainly, this work focusses on designing proteasome inhibitors that selectively inhibit the immunoproteasome, while leaving the constitutive proteasome mostly, if not completely, untouch…

Thesis focused on uncovering the underlying mechanisms of the lysosomal storage disorders Gaucher's disease using chemical tools, biochemical assays and lipidomics.

The chemical synthesis of inhibitors and probes targeting endo-glycosidases.

This thesis describes the development of a variety of mannosylated conjugates. Antigen presenting cells bear mannoside recognizing receptors that actively transport antigen into the cell. This thesis exploits this feature for the development of improved vaccines.

This thesis describes research aimed at discovering inhibitors selective for either of the two endoplasmic reticulum α-glucosidases, ER-I and ER-II, with the overarching goal of discovering new antiviral agents to treat viruses that rely on host N-glycosylation for proliferation.

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…

Dr. Remko Offringa is met ingang van 1 september 2016 benoemd tot Opleidsingsdirecteur van de masteropleiding Biology. Hij volgt daarmee Johan Memelink op.

Promotor: Prof.dr.ir. E. Deprettere

The adenosine receptors are proteins that reside in the extracellular membranes of cells. Activation of adenosine receptors plays a role in many physiological and pathological processes, such as immune responses and cancers.

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

Cholesterol influences many pathways, including serving as precursor for adrenal steroidogenesis. Imbalance of cholesterol levels has been implicated in several diseases including cardiovascular diseases and its underlying pathology, atherosclerosis.

The glycosylation reaction is a pivotal reaction in creating new and complex oligosaccharides.

Nicotinamide adenine dinucleotide (NAD+) is the substrate used for the introduction of the ubiquitous and highly dynamic PTM in which either one or multiple adenosine diphosphate ribose (ADPr) moieties are covalently attached to a nucleophilic side chain of an specific amino acid in the target protein…

Neuraminidases are enzymes that cleave glycosidic linkages of sialic acid. These enzymes are involved in influenza infections as well as in many cellular processes in mammals and micro-organisms.

Als ouders in angstige bewoordingen praten over nieuwe situaties, bepaalt dat sterk hoe vermijdend of angstig hun kind zal reageren. Een angststoornis bij de ouder of angstige aanleg van het kind versterkt dit effect echter niet. Leidse onderzoekers publiceerden hierover in Clinical Child and Family…

Pseudomonas Aeruginosa is a Gram-negative bacterium which can form biofilms, increasing its resistance against antibiotics and the host immune system. Polysaccharides are an integral part of this biofilm, one of these polysaccharides is called Psl. PslG is a glycosidase, able to cleave this polysaccharide,…

Promotores: Prof.dr. G.A. van der Marel, M. van Heel