The objective of this study was to investigate the expression and function of GRHL2 in different breast cancer subtypes.

In this thesis, we aimed to better understand the underlying mechanisms involved in TNBC progression and metastasis formation and discover new targets to reduce breast cancer related deaths.

Promotor: R.C.M. Pelger Co-Promotor: G. van der Pluijm

Kan het conditioneringsparadigma worden gebruikt voor kankerbehandeling met checkpointinhibitie?

Promotor: B. van de Water, Co-promotor: E.H.J. Danen

The spindle-assembly checkpoint (SAC) is a safety mechanism which secures accurate chromosome segregation during mitosis.

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Breast cancer is the most common cancer in women worldwide. Metastasis, the process by which cancer cells spread to other parts of the body, makes treatments less effective. It is important to unravel the mechanism of metastasis.

The clinical potential of applying synthetic lethality to cancer treatment is famously demonstrated by the BRCA1/PARP1 paradigm: a tumor specific defect in BRCA1 – a component of the DNA double-strand break (DSB) repair pathway homologous recombination (HR) – results in a remarkable sensitivity to PARP1…

To improve treatment of breast cancer patients it is important to understand all stages of breast cancer from initiation to in situ disease and progression to invasive disease. In this thesis we use intraductal injections of patient derived tissue to model ductal carcinoma in situ and invasive breast…

Invasive lobular carcinoma (ILC) is the second most common type of breast cancer.

Promotores: J. Jonkers, K.E. de Visser

The molecular mechanisms that instigate a healthy cell to become malignant are fueled by (epi)genetic alterations in so-called driver genes.

To improve cancer treatments, personalized medicine approaches have aimed to identify exactly which mutations are driving tumor development in a given patient and specifically target these mutations using precision therapies.

The main aim of this thesis was to unravel the signaling and regulatory networks that drive tumor cell migration during breast cancer metastasis.

Immunotherapies for cancer are an emerging class of therapeutic strategies which aim to treat cancer via augmentation of the immune system.

Promotores: Wim Jiskoot; Ferry Ossendorp

In this thesis, we will utilize embryonic zebrafish tumour models to understand the interaction between engrafted human cancer cells and macrophages from the host, test drug administration modalities and anti-cancer efficacies of newly-developed PDT and PACT compounds, and test a light-triggered liposomal…

In this thesis, we aim to shed light on the diverse and often opposing roles of integrin α3β1 in cancer.

Triple-negative breast cancer (TNBC) is a subtype of breast cancer characterized by limited treatment options and unfavorable clinical outcomes. Therefore, the research described in this thesis focused on the exploration of novel targeted therapies for TNBC.

Triple-negative breast cancer (TNBC) constitutes a small subtype (~15%) of breast cancer, but causes the majority of breast cancer-related deaths.

Promotor: A.H. Meijer, Co-promotor: B.E. Snaar-Jagalska

The research described in this thesis focused on identifying novel drug targets and synergistic combinations for triple-negative breast cancer (TNBC), a virulent subtype of breast cancer with a dismal prognosis and limited therapeutic options.

In this thesis, we used genetically engineered mouse models to identify genes and pathways that are involved in ILC formation and in the development of resistance to FGFR-targeted therapy.

Promotor: E. Bouwman, Co-promotor: S. Bonnet

G protein-coupled receptors (GPCRs), one of the largest families of membrane proteins, are responsive to a diverse set of physiological endogenous ligands including hormones and neurotransmitters.

Promotores: W. Jiskoot, F. Ossendorp

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).

Traditional drug discovery approaches have been hampered by (in vitro) cell-culture models that poorly represent the situation in the human body.

Prostate cancer (PCa) is one of the most prevalent cancer in males.

This thesis focuses on using liposomes in two different treatment strategies; vaccination (or immunotherapy) and delivery of a small molecule, and in two different disease models; cancer and atherosclerosis.

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Leidse onderzoekers hebben een nieuw model ontwikkeld om immunotherapie tegen kanker te verbeteren. Met een 3D-printer creëren ze mini-tumoren in een omgeving die lijkt op menselijk weefsel. Ook ontwikkelden ze een manier om in real-time te volgen wat er tijdens tests in deze mini-tumoren gebeurt.

Het Antoni van Leeuwenhoek/Nederlands Kanker Instituut, het Leids Instituut voor de Chemie en het Pivot Park Screening Centre gaan kennis en infrastructuur delen in het Cancer Drug Discovery Initiative. Vrijdag 11 oktober tekenden ze een letter of intent.

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Death in all types of melanomas is generally caused by metastasis. Uveal melanoma (UM) is the most common intraocular melanoma, there are currently no (patient-derived) animal models that faithfully recapitulate metastatic dissemination of UM.

Prof. dr. Pancras Hogendoorn CW (LUMC), dr. Annemarie H. Meijer (IBL), prof. dr. Thomas Schmidt (LION) en dr. B. Ewa Snaar-Jagalska (IBL) kregen een interdisciplinaire NWO TOP subsidie voor hun project “Role of Chemokine Gradient Sensing in Ewing’s Sarcoma Progression, Angiogenesis and Immune Target…

The goal of the research presented in this thesis was to explore the chemical space of ruthenium(II) photocages, investigate their ability to host potent chemotherapy drugs, and to red shift the activation wavelength of the most promising PACT candidates to conduct biological studies.

In order to be able to develop effective medicine and treatments to prevent or cure autoimmune diseases or cancer we need to understand the mechanisms how they arise and what drives their course.Unravelling the fundamental molecular mechanisms influencing the onset and course of diseases such as allergies,…

Met ingang van 1 april 2018 is Erik Danen benoemd tot hoogleraar Cancer drug target discovery bij het Leiden Academic Centre for Drug Research (LACDR). Zijn vakgebied is celbiologie van kanker, waarin hij zich richt op de achterliggende mechanismen bij uitzaaiingen en resistentie voor behandelingen.

This thesis investigates how cell shape and collective behavior influence the dynamics and structure of biological tissues, which are crucial for understanding processes like embryonic development, tissue regeneration, and metastasis.

Het immuunsysteem speelt een paradoxale rol bij de uitzaaiing van borstkanker. Dat ontdekte Kelly Kersten in haar promotieonderzoek. Sommige immuuncellen dragen bij aan uitzaaiingen, terwijl andere cellen kunnen worden aangezet om chemotherapie effectiever te maken. Promotie op 7 februari.

This thesis represents a comprehensive investigation into the control of cancer stemness and metastatic initiation using a combination of advanced zebrafish xenograft models and in vitro assays.

The aim of this thesis was to develop novel treatment strategies for different types of eye melanoma utilizing zebrafish models. We first establish orthotopic and ectopic xenograft models for uveal and conjunctival melanoma by engraftment of the immortalized cells derived from these tumors into zebrafish…

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

The main goal of the research described in this thesis was the development of new photoactivated chemotherapy (PACT) ruthenium(II) complexes bearing a non-toxic photolabile ligand.