1,624 search results for “cell and” in the Public website
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The career choices of cells
How does an embryonic stem cell decide if it becomes a heart cell or a kidney cell? That’s the question computational biologist Maria Mircea studied for her PhD research. She looked at the inside of individual cells to analyse how they change. This is what she discovered.
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Willem Fibbe
Faculteit Geneeskunde
w.e.fibbe@lumc.nl | +31 71 526 2271
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Dennis Claessen
Science
d.claessen@biology.leidenuniv.nl | +31 71 527 5052
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Micha Drukker
Science
m.drukker@lacdr.leidenuniv.nl | +31 71 527 6271
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Biomedical Imaging
The rapid advances in imaging technology enable to see inside the body with ever increasing detail.
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Cells ‘walk’ to firm ground
A new mathematical model may explain how body cells get their shapes and what makes them move within a tissue. The model provides fundamental knowledge for applications in tissue engineering, amongst other things. Publication in open-access journal iScience.
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Aggressiveness of cancer cells halted
Zebrafish-human communication shows that cancer cells lacking a signaling protein are less able to develop aggressive metastatic properties. This discovery has been made by molecular cell biologist Claudia Tulotta. PhD defence 14 June.
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poly(i:C): a defined adjuvanted vaccine for induction of antigen-specific T cell cytotoxicity
For effective cancer immunotherapy by vaccination, co-delivery of tumour antigens and adjuvants to dendritic cells and subsequent activation of antigen-specific cytotoxic T cells (CTLs) is crucial. In this study, a synthetic long peptide (SLP) harbouring the model CTL epitope SIINFEKL was encapsulated…
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Making cells ultra-heavy
The life of a fibroblast is heavy, but PhD student Julia Eckert makes it 19.5 times heavier, using the Large Diameter Centrifuge at the ESTEC space research centre in Noordwijk.
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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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Counting Molecules in Living cells
Biophysicist Rolf Harkes has developed a microscope to optically localize individual molecules in living cells. It improves monitoring of diseases like cancer and Parkinson’s at the cellular level. Defende PhD thesis on t13 January 2016.
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Cellular Forces: Adhering, Shaping, Sensing and Dividing
Promotor: Prof.dr. T. Schmidt
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3D Image to Characterize and Optimize antibody-mediated antitumor immunity
Bispecific antibodies with one Fab arm binding to effector cells, such as T-cells and NK-cells, while the other Fab arm recognizing a tumor associated antigen (TAA) can be used to redirect these effector cells for tumor specific killing. Using bispecific antibodies to treat hematological cancers is…
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About the programme
MT3 is a globally unique programme led by professors and reference authors that cover the most up-to-date knowledge possible in the area of Transfusion Medicine and Cellular and Tissue Therapy. It provides access to high quality knowledge and skills via a completely online system.
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Douwe Atsma
Faculteit Geneeskunde
d.e.atsma@lumc.nl | +31 70 526 2020
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CO2 reduction on post-transition metals and their alloys: an industrial approach
This thesis focuses on the synthesis, characterization and performance towards CO2 electroreduction of mono and bi-metallic particles based on p-block metals
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Unraveling cross-presentation pathways using a chemical biology approach
Is it possible for sugar patterns on cells to activate the immune system to combat cancer?
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LUMC to build largest stem cell facility in the Netherlands
The Leiden University Medical Center (LUMC) will start construction this year of the largest non-profit stem cell and gene therapy facility in the Netherlands, and one of the largest facilities in Europe. NECSTGEN – the Netherlands Center for the Clinical Advancement of Stem Cell and Gene Therapies…
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High throughput microscopy of mechanism-based reporters in druginduced liver injury
Promotor: B. van de Water
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Operando research in electrochemistry
The central theme of Rik Mom’s research group is to identify what the electrode-electrolyte interface looks like when electrocatalysis is taking place. Using specialized forms of Raman and X-ray spectroscopy, we study the chemical state and bonding environment of the electrode surface and near-surface…
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Bacteria under stress can live without cell wall
Thread-like bacteria make cells that no longer have a cell wall under the influence of osmotic stress. A remarkable discovery, since the cell wall serves as a protection barrier for bacteria. It could also help to explain how pathogenic bacteria can hide in our body from our immune system. A team of…
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Researchers reveal how stem cells make decisions
Embryonic stem cells have the remarkable ability to develop into any type of cell. On their way to become for example a liver or a heart cell, they must repeatedly decide between alternative developmental paths. How they make these decisions is largely unknown. An international team of biophysicists…
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Fluorescent in vivo models for hematopoietic stem cell and lymphoid lineage analysis
PhD defence
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Small molecule prevents tumour cells from spreading
Leiden chemists, together with colleagues at the University of York (UK) and Technion (Israel) have discovered a small, sugar-like molecule that maintains the integrity of tissue around a tumour during cancer. This molecule prevents tumour cells from spreading from the primary cancer site to colonise…
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Two-photon microscope captures plant cells
Leiden physicists are helping Wageningen plant researchers to study unpredictable plant embryos. For this, they are using a novel two-photon fluorescence microscope, aided by a 30 thousand euro ZonMW grant.
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Cancer cells play hide-and-seek with immune system
When the immune system attacks cancer, the tumour modifies itself to escape the immune reaction. Researchers at LUMC published on this subject in Nature on 28 June.
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Young, sleeping memory cells are crucial in fighting a reinfection
Researchers from the Netherlands Cancer Institute, the Leiden University Medical Center (LUMC) and Oncode have created a tracking system that can reveal how often cells have divided. This allowed them to find a yet undiscovered population of immune cells: young memory cells that behave like stem cells.…
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Careful restart Cell Observatory and labs
With the necessary measures, researchers restart their work in various laboratories. The Leiden Cell Observatory is one of the places where scientists resume their lab work.
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300 million euros for new international stem cell consortium
The Leiden University Medical Center (LUMC), the Danstem Institute from the University of Copenhagen and the Murdoch Children’s Research Institute in Melbourne have received 300m euros from the Novo Nordisk foundation. The aim of this new international consortium is to bring stem-cell based therapies…
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Leiden scientists map cell types in fetal kidney
Kidney failure is a serious issue because kidneys cannot regenerate themselves after injury. A possible solution consists of artificially growing healthy kidney tissue. To achieve that, scientists first need to understand kidney development during the earliest stages, in the fetus. Leiden researchers…
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The added risk of size
What are the risks of nanoparticles?
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ERC Starting Grant for Roxanne Kieltyka: stem cells in gels
Chemist Roxanne Kieltyka has received an ERC Starting Grant of 2 million euros. In her lab, she creates gels that mimic the instructive material that supports cells in our body. With the grant, she aims to make these gels stiff and tough, and to create a bio-printed miniature heart ventricle.
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Chemical biology of sphingolipids: fundamental studies and clinical applications
Overkleeft
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Mathematical modelling of adverse outcome pathways
In this project, we aim to develop mathematical models to mechanistically and quantitatively predict the dynamics of cellular stress pathway activation and its relation with toxic effects when cells are exposed to various toxicants.
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Frank Schaftenaar
Science
f.h.schaftenaar@lacdr.leidenuniv.nl | +31 71 527 5134
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Coiled-coil biomaterials for biological applications
This dissertation contains four works during my PhD. Different biomaterials have been designed based on coiled-coil peptides. These biomaterials have a range of applications, inclusing drug delivery, cell sorting to cell-cell fusion.
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Image-based phenotypic screening for breast cancer metastasis drug target discovery
The main aim of this thesis was to unravel the signaling and regulatory networks that drive tumor cell migration during breast cancer metastasis.
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Bioengineering and biophysics of viral hemorrhagic fever
Viral hemorrhagic fever (VHF) is a group of acute diseases caused by highly infectious viruses including Ebola, Lassa, Dengue viruses. Its high mortality rate poses high risk to public health, however, studies on VHF have been hampered due to the non-availability of proper models and incomplete knowledge…
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The Netherlands X-omics Initiative
The Netherlands X-omics Initiative is a new facility as part of the National Roadmap for Large-Scale Research Infrastructures. It is partly funded by NWO with a total budget of 40 million euro. The project started on September 2018 and will last for ten years.
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How killer -T-cells migrate towards virus-infected cells
Joost Beltman (LACDR, Leiden University) has provided novel insights in the way T cells migrate towards virus-infected cells. This was accomplished by a combination of experimental research in the group of Ton Schumacher (Dutch Cancer Institute, NKI) and computer simulations in collaboration with Rob…
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Specialised immune cells have potential for new cancer immunotherapies
Researchers from Leiden University Medical Center (LUMC) and Netherlands Cancer Institute (NKI) have discovered how specialised immune cells can detect and remove cancers that are ‘invisible’ to the conventional defence mechanisms of the immune system. Their work has been published in Nature. The findings…
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How cells talk by pulling on a fibre network
Mechanics play a larger role in blood vessel formation, and other developmental biology, than previously thought. Cells appear to respond to mechanical signals, such as pressure. Through the extracellular matrix, a network of fibrous proteins, cells can supposedly exchange those mechanical signals over…
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How oxygen deprivation causes cancer cells to spread
In breast cancer, metastasis rather than the primary tumour is the cause of death. A lack of oxygen in the tumour cells promotes this metastasis, accompanied by a reprogramming of the cell's metabolism. PhD candidate Qiuyu Liu investigated these alterations to get more knowledge about the actionable…
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Cancer cell mechanism found to be used against itself
Leiden biophysicists have found a new possible way to attack cancer cells. They have located ‘sinkholes’ on the cells where receptor proteins disappear from the surface. If a drug could push these proteins towards those areas, it would kill the cancer cell.
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New cell therapy facility at Leiden Bio Science Park
American pharmaceutical company Bristol Myers Squibb will be building a new (CAR-T) cell therapy facility in the Oegstgeest part of the Leiden Bio Science Park. The company will manufacture and develop CAR T-cell therapy for patients with blood cancer (leukaemia), for example.
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Dynamics and regulation of the oxidative stress response upon chemical exposure
The focus of the described research in this thesis is on the oxidative stress response (Nrf2 pathway). The aim of the research presented in this thesis is to obtain more information concerning microRNAs which are involved in the Nrf2 pathway, to determine and evaluate the application of microRNAs for…
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Sensing drug responses of single cells using optical tweezers
Light can be used to apply forces on single cells. Focused lasers have been used by physicists to tweeze particles and to manipulate them. These so called “optical tweezers” can be used as mechanical phenotyping tools for characterising the mechanics of materials and living objects.
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Bacteria without cell wall gobble up DNA from environment
A bacterium hiding from the immune system and picking up bits of DNA from its environment. The result: gaining new traits, such as better protection against antibiotics. Fortunately, we have not found such a damning scenario yet. However, PhD student Renée Kapteijn did find the first clues, which…
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The promises and the dark side of stem cells
Geneticist Hans Clevers will give the first Niko Tinbergen lecture new style on 10 December, which is all about stem cells. The young Leiden professors Ariane Briegel and Susana Chuva de Sousa Lopes talk about bacterial noses and the cultivation of egg cells in the lab in short introductory lectures…
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Key innate immune components controlling intracellular infection
Promotor: Prof.dr. H.P. Spaink, Co-promotor: Prof.dr. A.H. Meijer