429 search results for “gene” in the Public website
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Trans-kingdom DNA transfer
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.
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Heme biosynthesis and regulation in the filamentous fungus Aspergillus niger
Promotors: Prof.dr. P.J. Punt, Prof.dr. C.A.M.J.J. van den Hondel
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Aquatic eDNA: Beyond Species Presence
As a non-invasive genetic method, eDNA based approaches have become an important component of ecologists' and environmental managers' toolkits for biomonitoring in conservation and an increasingly important source of ecological knowledge.
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The Role of Linker DNA in Chromatin Fibers
The genetic information of all living organisms is contained in their DNA. Cells modify the degree of DNA compaction by epigenetics, which largely determines what genes are read out and which genes are transcriptionally silent.
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Personalized drug repositioning using gene expression
PhD defence
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NWO ECHO grant for research on fickle RNA production
Genes are active sometimes, and other times they remain dormant for a while. Leiden physicist John van Noort receives an NWO ECHO grant to find out how this happens.
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White blood cells in transparent embryos
Leiden molecular cell biologists in the research group of Annemarie Meijer have discovered novel early macrophage-specific genes in zebrafish, including a signal transducer pivotal for the migration of macrophages in the innate immune response to bacterial infection. Their findings were published on…
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Ahmed Mahfouz: 'The mystery of brain diseases, unravelled cell by cell'
Which brain cell does what, when Parkinson's disease arises? It won't be long before this jigsaw is solved piece by piece. Ahmed Mahfouz, computational biologist, combines bio-knowledge from Leiden with algorithms from Delft and is getting closer to finding the key.
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Efficient targeting of the Trichoderma genome for industrial protein engineering
The research is aimed at development of an efficient gene targeting method that allows controlled integration of DNA at a preselected site in the Trichoderma genome.
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Regulation of actomyosin contraction as a driving force of invasive lobular breast cancer
In this thesis, we used genetically engineered mouse models and a variety of cell-culture based assays to identify genes and pathways that are involved in the development and treatment of invasive lobular carcinoma (ILC).
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ZF-CANCER - Developing high-throughput bioassays for human cancers in zebrafish
How can zebrafish research help to understand and fight human cancer?
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New antibiotics
Pathogenic bacteria are increasingly resistant to today’s antibiotics. Professor Gilles van Wezel seeks new forms of antibiotics in good bacteria that live in the soil.
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Fungal Chitosans from Fermentation Mycelia for Plant Biostimulants (FunChi)
Our focus is to optimize the fungal cell wall to both increase chitin production and chitin extractability.
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ADAPTED
The ADAPTED (Alzheimer's Disease Apolipoprotein Pathology for Treatment Elucidation and Development) project is a major new initiative to investigate an area of Alzheimer's Disease (AD) research which has previously received little attention. The project aims to improve understanding of the function…
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Molecular engineering of plant development using Agrobacterium-mediated protein translocation
Supervisor: P.J.J. Hooykaas Co-Supervisor: R. Offringa
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Dynamic organization of bacterial chromatin by DNA bridging proteins
Bacteria often experience external challenges, such as changes in environmental conditions or attacks by bacteriophages.
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Evaluation of the zebrafish embryo as an alternative model for hepatotoxicity testing
Promotor: Prof.dr. B. van de Water, Co-promotores: L.T.M. van der Ven, A.S. Kienhuis
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Multi-omics studies of the control of growth and antibiotic production of Streptomyces
Actinobacteria are Gram-positive bacteria that have a complex multicellular life cycle and are well known for their ability to produce a wide range of bioactive natural products (NPs).
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T-DNA integration and DNA repair of DSBs in plants
Identification and characterization of components of DNA repair pathways and their role in Agrobacterium T-DNA integration and repair of CRISPR/Cas induced DSBs.
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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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Priyanka Chopra
Science
p.chopra@biology.leidenuniv.nl | +31 71 527 1886
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Guillermo Guerrero Egido
Science
g.guerrero.egido@biology.leidenuniv.nl | +31 71 527 4791
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Merijn de Bakker
Science
m.a.g.de.bakker@biology.leidenuniv.nl | +31 71 527 5043
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Manon de Visser
Science
m.c.de.visser@biology.leidenuniv.nl | +31 71 527 4882
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Remus Dame
Science
rtdame@chem.leidenuniv.nl | +31 71 527 5605
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Role of leukocytes in metastasis formation in a zebrafish
How do macrophages and neutrophils contribute to metastatic onset?
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Hybrid zone dynamics in amphibians
Hybrid zones occur where two species meet and produce offspring (hybrids). Typically, hybrids show a considerable reduction in fitness. In this thesis two hybrid zones are treated.
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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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Functions of leptin in tuberculosis and diabetes: multi-omics studies across species
In this thesis, I study 1) metabolic alterations in tuberculosis related to wasting syndrome in human patients as well as in rodent and fish animal models. 2) effects of the mutation of the leptin gene on cachexia and diabetes in rodent and zebrafish animal models.
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MYC transcription factors: masters in the regulation of jasmonate biosynthesis in Arabidopsis thaliana
Promotor: J.M. Memelink
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Chromatin organization & dynamics (Dr. Remus Dame)
Throughout all domains of life, from bacteria and archaea to eukaryotes, genomes adopt well-organized three-dimensional structures that can change in space and time to accommodate preferred transcriptional programs for environmental adaptation, the maintenance of cellular identity and differentiation…
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Targeting tumors using T-cell receptor gene transfer
PhD defence
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Viral gene therapy approaches for CRB1 retinal disease
PhD defence
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Characterization of candidate genes in unexplained polyposis and colorectal cancer
PhD defence
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Research
At the division of Biopharmaceutics, we aim to develop and test new therapeutic approaches to limit or even prevent the development of atherosclerosis in order to reduce the number of acute cardiovascular syndromes such as myocardial infarction or stroke.
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Science for Society
By carrying out fundamental research and providing excellent education, universities become a breeding ground for innovation and entrepreneurship.
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ZF-HEALTH - Zebrafish Regulomics for Human Health
How can zebrafish research help understanding human diseases?
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Understanding plant transgenesis
How is Pol θ responsible for T-DNA integration, and how do other DNA double-strand break repair pathways interact with Pol θ? How may we manipulate T-DNA integration to stimulate error-free integration at a predetermined genomic site?
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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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In Pursuit of Next-Generation Lipopeptide Antibiotics
Can new variants of daptomycin and the polymyxins be found?
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Functional analysis of agrobacterium tumefaciens virulence protein VirD5
Supervisor: P.J.J. Hooykaas
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Chemical genetics strategy to profile kinase target engagement reveals role of FES in neutrophil phagocytosis, Nat. Comm. 2020
Chemical tools to monitor drug-target engagement of endogenously expressed protein kinases are highly desirable for preclinical target validation in drug discovery. Here, we describe a chemical genetics strategy to selectively study target engagement of endogenous kinases.
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Resistance to PARP inhibition by DNA damage response alterations in BRCA1/2-deficient tumors
Inactivating mutations in BRCA1 or BRCA2 genes predispose to several types of cancer.
- Leiden Institute of Chemistry
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Unravelling cell fate decisions through single cell methods and mathematical models
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.
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Involvement of host and bacterial factors in Agrobacterium-mediated transformation
Agrobacterium tumefaciens, a gram-negative plant pathogen belonging to the family Rhizobiaceae, is the causative agent of crown gall disease, which can affect many plant species including agronomically important ones.
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Exploring and exploiting the mechanism of mycelial pellet formation by Streptomyces
Promotor: G.P. van Wezel
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CoSTREAM: Understanding Stroke and Alzheimer
The Horizon 2020 project CoSTREAM aims to improve our understanding of the co-occurrence of stroke and Alzheimer’s disease. It has long been known that both diseases share underlying causes, but their exact interaction or link is not fully understood. CoSTREAM combines multiple factors to identify and…
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Bacterial Chromatin
The relative simplicity of the bacterial cell, short generation times and well defined and inexpensive culturing conditions have significantly contributed to our understanding of many complex biological systems. Yet the workings of the bacterial genome, seemingly impossibly compressed within a tiny…
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Systems microscopy to unravel cellular stress response signalling in drug induced liver injury
Promotor: B. van de Water