2,465 search results for “stem cell biology” in the Public website
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Biology and Science Communication and Society (MSc)
The master’s specialisation Biology and Science Communication and Society at Leiden University bridges the gap between experts and the public by combining high quality research in biology with extensive training in science communication.
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Consonant and vowel gradation in the Proto-Germanic n-stems: an investigation of Germanic morphophonology
This dissertation focuses on the systematic vowel alternations displayed by the Proto-Germanic n-stems. The fact is, that many of these nouns now appear to have preserved the ablaut system of the Indo-European proto-language spoken some five millennia ago. In this respect, the n-stems are truly comparable…
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Taking control of charge transfer: strategic design for solar cells
Promotor: Huub J.M. de Groot, Co-promotor: Francesco Buda
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Functional xylem anatomy: intra and interspecific variation in stems of herbaceous and woody species
My PhD thesis investigates the ecological significance of resistance against drought-induced air bubble formation inside the water conduits of plants (embolism), and the plasticity and functional aspects of stem anatomical traits in woody and herbaceous species.
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How costimulation directs regulatory T cell responses
PhD defence
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Structural characterization of the cell envelope of Actinobacteria under changing environments
Bacteria have the ability to alter their morphology in order to adapt to changing environments.
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Phenotypic screening with 3D cell-based assays
Traditional drug discovery approaches have been hampered by (in vitro) cell-culture models that poorly represent the situation in the human body.
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Aspects of the analysis of cell imagery: from shape to understanding
In this thesis, we have studied cell images from two types of cells, including pollen grains and the immune cells, neutrophils. These images are captured using a bright field microscope and a confocal microscope.
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Chitin in the fungal cell wall: towards valorization of spent biomass of Aspergillus niger
Aspergillus niger is an important industrial producer of organic acids and enzymes producing large amounts of spent fungal biomass.
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Functional fluorescent materials and migration dynamics of neural progenitor cells
In this thesis, time-lapse fluorescent microscopy plays a pivotal role in investigating functional materials within living cells as well as the migratory behaviour of neural progenitor cells.
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Formulation of influenza T cell peptides: In search of a universal influenza vaccine
Promotoren: G.F.A. Kersten, W. Jiskoot, Co-promotor: J-P. Amorij
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Regulation of nanoparticle biodistribution by scavenger endothelial cells (SECs)
A very large part of intravenously administered nanoparticles are cleared through the liver. Within the liver, most nanoparticles are thought to be sequestered by macrophages (Kupffer cells). To achieve effective cell-specific targeting of drugs and non-viral gene delivery vectors, improved mechanistic…
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Making a field of interpretation for biosolar cells
This project investigates the role of art in the public and academic debate on biosolar energy
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delivery of viral epitopes to redirect virus-specific CD8+ T cells to cancer cells
PhD defence
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The mechanism of Agrobacterium-mediated transformation of eukaryotic cells
We aim to unravel the molecular mechanisms involved in the transformation of eukaryotic cells by Agrobacterium.
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Balsaminaceae in Southeast Asia: systematics, evolution, and pollination biology
Balsaminaceae is a diverse plant family characterized by a huge floral morphological diversity.
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Targeting of antigen-presenting cells with mannosylated conjugates
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.
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Microfluidic 3D cell culture for high throughput screening
There is an urgent need for more physiologically relevant cell culture methods to guide compound selection in pre-clinical stages of the drug development pipeline.
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Chemical biology of glucosylceramide metabolism: fundamental studies and clinical applications for Gaucher disease
How can we develop new chemical biology tools and approaches to understand and interfere with glucosylceramide metabolism in relation to Gaucher disease?
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Omics data integration with genome-scale modelling of dopaminergic neuronal metabolism
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.
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Knowledge of DNA repair in the fight against tumour cells
What is the most effective way to eliminate tumour cells? The DNA repair mechanism could play an important role in increasing the effectiveness of chemotherapy in the fight against cancerous cells. If we are to influence this mechanism, we need fundamental knowledge about how the mechanism works.
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Vascular and Regenerative medicine
With an ageing population it is becoming increasingly important to find means to repair cells, tissue and organs through regenerative medicine.
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LED3 Lecture: Chemical Biology of Nucleic Acids
Lecture
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LED3 Lecture: Chemical Biology for Drug Discovery
Lecture
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LED3 Lecture: Synthetic Biology for Drug Discovery
Lecture
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Department of Environmental Biology (CML-EB)
Mission: The Environmental Biology department aims to increase the scientific understanding of how current and emerging anthropogenic threats affect biodiversity and ecosystem services. Through this understanding they facilitate strategic management of natural resources by addressing urgent challenges…
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Characterization of Cell-based medicinal products (CBMPs)
Cell-based medicinal products (CBMPs) show great promise when it comes to the treatment of genetic disorders. However, there is limited knowledge about CBMP stability during their production, storage, and administration to patients. The main focus of my research is the characterization of CBMPs using…
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From stress to success: how actinobacteria exploit life without a cell wall
The central question of this Vici proposal is to investigate if, and how actinobacteria exploit life without a cell wall.
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Supramolecular materials: from biosensors to cell delivery devices
The group of Dr. Roxanne Kieltyka designs and synthesizes molecules that self-assemble into polymeric materials using specific non-covalent interactions. These substrates can be used for numerous applications in medicine ranging from disease detection to cell delivery depending on the (bio)molecular…
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Insights from modeling metabolism and amoeboid cell motility in the immune system
This thesis focuses on two processes involved in fighting infections: metabolism and immune cell motility and navigation.
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Influenza T-cell epitope-loaded virosomes adjuvanted with CpG as a potential influenza vaccine
Influenza CD8(+) T-cell epitopes are conserved amongst influenza strains and can be recognized by influenza-specific cytotoxic T-cells (CTLs), which can rapidly clear infected cells. An influenza peptide vaccine that elicits these CTLs would therefore be an alternative to current influenza vaccines,…
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Chemical Synthesis of Fragments of Streptococcal Cell Wall Polysaccharides
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…
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The use of activity based protein profiling to study proteasome biology
Promotor: H.S. Overkleeft, Co-Promotor: B.I. Florea
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Marjolein Crooijmans
Science
m.e.crooijmans@biology.leidenuniv.nl | +31 71 527 5075
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Regulation of enzyme production in fungal cell factories
Our object is to identify and characterize transcription factors involved in lignocellulosic biomass degradation in the filamentous fungus Aspergillus niger.
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Macrophages inhibit human osteosarcoma cell growth after activation with the bacterial cell wall derivative liposomal muramyl tripeptide in combination
CONCLUSION: This study demonstrates that human macrophages can be induced to exert direct anti-tumor activity against osteosarcoma cells. Our observation that the induction of macrophage anti-tumor activity by L-MTP-PE required IFN-gamma may be of relevance for the optimization of L-MTP-PE therapy in…
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The early stress response of jasmonic acid in cell suspension cultures of Catharanthus roseus
In order to gain a better insight into the basis of the rapid jasmonic acid (JA)-mediated stress response, an integrated approach using a targeted high-resolution mass spectrometry-based (HRMS) platform, was conducted to monitor the metabolism of JA using the model system of cell suspension cultures…
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Evolutionary Developmental Biology of Bitterling Fish
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…
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The comparative biology of language learning
A theoretical project on the insights gained by human (including infant), nonhuman animal and computational studies on artificial grammar learning; identifying the critical questions for future research by developing novel experimental and computational approaches to address these issues.
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Developing metabolomics for a systems biology approach to understand Parkinson's disease
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,…
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20th International Symposium on the Biology of Actinomycetes
ISBA2025
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Ewa Snaar-Jagalska
Science
b.e.snaar-jagalska@biology.leidenuniv.nl | +31 71 527 2727
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simulation studies of angiogenesis - Reverse engineering the role of tip cells and pericytes in vascular development
Promotor: Prof.dr. R.M.H. Merks
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Quantitative biology of polar auxin transport and plant development
The availability of complete plant genome sequences together with the ever increasing amount of data on the molecular, cellular and physiological mechanisms of plant development require mathematical and computational models to obtain a complete overview of and generate new insights into the quantitative…
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Sybil-AA: Systems Biology of Alcohol Addiction
The Horizon 2020 project Sybil-AA (Systems Biology of Alcohol Addiction) focuses on modeling and validating disease state networks in human and animal brains for understanding pathophysiology, predicting outcomes and improving therapy in alcohol addiction. Alcohol addiction, the most severe form of…
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Bioorthogonal deprotection strategy to study T-cell activation and cross- presentation
Cytotoxic T-cells (CTLs) are involved in the clearance of viruses and killing of tumor cells.
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Circulating cells as biomarkers in cardiovascular disease : the difference between men and women
Promotor: J. Kuiper
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Another Brick in the Wall: The role of the actinobacterial cell wall in antibiotic resistance, phylogeny and development
Streptomyces are multicellular, Gram-positive bacteria in the phylum of actinobacteria which produce a high amount of bioactive natural products of which the expression is tightly coordinated with the life cycle.
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effector protein translocation from Agrobacterium tumefaciens into host cells
In our research protein translocation from Agrobacterium into yeast and plant cells is studied to obtain fundamental insights in the translocation process
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Development of an in vitro vascular network using zebrafish embryonic cells
One of the major limitations in culturing complex tissues or organs is the lack of vascularization in the cultured tissue. Development of a functional capillary bed could overcome this problem.