33 search results for “dna” in the Public website
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Optical properties of DNA-hosted silver clusters
Promotor: D. Bouwmeester, Co-promotor: D. Kraft
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synthesis of metal-based chemotherapeutic agents for targeted DNA interactions or DNA repair pathway modulation
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…
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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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Folded DNA unravelled
Leiden physicist Maarten Kruithof has discovered how our DNA is infallibly able to fold itself and to unfold again. In his dissertation he demonstrates how DNA is folded in a single long, very flexible spiral.
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Human DNA softer than DNA single-celled life
Single-celled organisms have stiffer DNA than multicellular lifeforms like humans and rice. Theoretical physicists managed to simulate the folding in full genomes for the first time to reach this conclusion. Publication in Biophysical Journal on February 7.
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DNA folded in compliant helix
In an Advance Online Publication biophysicist John van Noort and others show using magnetic tweezers that DNA is folded in compliant helices of chromatin. This allows enzymes access to the DNA needed for gene expression. Van Noort's research group made the discovery in close partnership with researchers…
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NWO Projectruimte Grant for DNA Flexibility Research
Theoretical physicist Helmut Schiessel receives an NWO Projectruimte grant of 390,000 euro. He will use this budget to hire a postdoc and a PhD student to continue his research on flexibility of double stranded DNA.
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Tapping new markets for rapid DNA unraveller
Researching DNA material for genetic disorders using the most powerful apparatus. This is what GenomeScan, a company on the Leiden Bio Science Park, does. Master's student Konstantina Konstantinopoulou is doing an internship there. 'It's a world where developments happen really rapidly so it's a fantastic…
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The mechanical genome : inquiries into the mechanical function of genetic information
The four possible segments A, T, C and G that link together to form DNA molecules, and with their ordering encode genetic information, are not only different in name, but also in their physical and chemical properties.
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Bart Custers on DNA in cold cases
The Dutch Public Prosecution Service (OM) and the Netherlands Forensic Institute (NFI) want to use private DNA databases in an effort to solve deadlocked murder cases. Bart Custers, Professor of Law & Data Science at eLaw, Center for Law and Digital Technologies, expects that this is permissible from…
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New SPARXS technique reveals DNA behaviour at unprecedented speed
Studying how single DNA molecules behave helps us to better understand genetic disorders and design better drugs. Until now however, examining DNA molecules one-by-one was a slow process. Biophysicists from Delft University of Technology and Leiden University developed a technique that speeds up screening…
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DNAmarkerpoint
The main purpose of DNAmarkerpoint is to better understand the ecology, evolution and biodiversity through the study of ancient- and modern DNA.
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Matching medication to DNA leads to 30% fewer side effects
According to the LUMC, patients experience 30% fewer serious side effects when medication doses are tailored to their DNA.
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Non-invasive DNA-labeling tool opens doors for new research
Dutch researchers have developed a new tool to label DNA for studying chromosomes in live cells. The tool is non-invasive and can be applied in culture but also in living organisms, such as zebrafish embryos. The team published their findings in the journal Nucleic Acids Research.
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Bart Custers on using genealogical DNA in criminal cases
The Public Prosecutor's Office (OM) and the Netherlands Forensic Institute (NFI) want to use private DNA databases for genealogical research in criminal investigations. The method could be used in serious criminal cases that have stalled and it is already being used in investigations abroad. Whether…
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Supramolecular polymer materials for biomedical applications and diagnostics
Self-assembly is an abundant process in nature and is vital to many processes in living organisms.
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Human-wildlife Interactions in the Western Terai of Nepal
Large carnivores and humans, along with their livestock, have co-existed for thousands of years. However, human population growth and an increase in economic activities are modifying the landscape for large carnivores and their prey.
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Algorithms for the description of molecular sequences
Promotor: J.N. Kok, P.E. Slagboom Co-promotor: J.F.J. Laros
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Nucleosome stacking in chromatin fibers probed with single-molecule force- and torque-spectroscopy
In human cells, a meter-long DNA is condensed inside a micrometer-sized cell nucleus. Simultaneously, the genetic code must remain accessible for its replication and transcription to functional proteins.
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Can we live longer? Leiden physicist makes discovery in protective layer in genes
With the aid of physics and a minuscule magnet, researchers have discovered a new structure of telomeric DNA. Telomeres are sometimes seen as the key to living longer. They protect genes from damage but get a bit shorter each time a cell divides. If they become too short, the cell dies. The new discovery…
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Biophysicists unravel exact folding of a single gene
The way genes are folded determines their activity in our body. Leiden biophysicists are now the first to unravel this structure molecule-by-molecule. Publication on December 1st in Nature’s Scientific Reports.
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Two graphene layers lean in for a kiss
Leiden physicists and chemists have managed to bring two graphene layers so close together that an electric current spontaneously jumps across. In the future this could enable scientists to study the edges of graphene and use them for sequencing DNA with a precision beyond existing technologies. Publication…
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Integrative taxonomy of araneomorph spiders: Breathing new life into an old science
Taxonomy as a science has accumulated data and knowledge for more than 250 years.
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Biological and Soft Matter Physics
Research groups in the Biological & Soft Matter Programme unravel mechanisms in biological processes and develop novel bio-inspired soft materials.
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John van Noort appointed Professor in Biophysics
Leiden University has appointed John van Noort as Professor in Biophysics. He studies the way in which our DNA is folded and read out.
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ERC grant for Sebastian Pomplun to precisely influence gene expression
In order to stop a whole range of diseases or disorders at their source, you would have to be able to switch certain genes on or off. Sebastian Pomplun wants to develop substances that can do this very precisely. For example, he wants to disrupt cancer processes and make cells produce an important missing…
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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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Shaping proteins to understand chaperone-related diseases
Alireza Mashaghi and his research team have created a new framework to understand shapes of proteins and DNA. With this framework, many diseases can be understood better.
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First patient in the Netherlands successfully treated with stem cell gene therapy
Researchers from the Leiden University Medical Center (LUMC) have successfully used stem cell gene therapy to treat a baby with the severe congenital immune disorder SCID. An important milestone: it is the first time stem cell gene therapy of Dutch origin has been administered to a patient, and also…
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Tracing human mobility across the Caribbean
What are the patterns and processes of human mobility in the pre-colonial circum-Caribbean as revealed by burial populations and what are the underlying motives and socio-cultural principles on both micro- and macro-scales?
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Novel detection method for iron in Alzheimer’s brain
For many years, scientists have observed a correlation between Alzheimer’s disease and a surplus of iron in the brain. However, a causal link between the two has not been proven yet. We lack knowledge concerning the specific form of iron that is involved in the development of neurodegenerative diseases.…
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Ten years ERC: Sylvestre Bonnet kills cancer with light
In 2013, Sylvestre Bonnet received an ERC Starting Grant to kill cancer with molecules that can be activated by light. Two postdocs and three PhD students later, the end approaches of his so far successful project.
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Between spiritual care and forensic care: situating the remains of war dead in contemporary Vietnam
Lecture, Research Seminar