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Chemogenetics Application and PhotoActivated ChemoTherapy to study Multidrug Resistance in Glioblastoma

Project description

Identifying key players in drug resistance in cancer

Cancer cells evolve to resist chemotherapeutic drugs, causing treatment to fail. This multidrug resistance (MDR) can be caused by the altered redox balance inside cancer cells. With the support of the Marie Skłodowska-Curie Actions programme, the target4ROS project focuses on glioblastoma, an aggressive and highly drug-resistant brain cancer. The aim is to understand how reactive oxygen species (ROS) contribute to MDR in glioblastoma. Researchers will employ light-activated cancer treatment as a tool to increase ROS inside cancer cells and study their impact on treatment response in vitro and in vivo. Project findings are slated to pave the way towards more effective treatments that overcome resistance and improve patient outcomes.

Objective

Cancer therapy faces significant challenges due to multidrug resistance (MDR), which reduces the effectiveness of chemotherapeutic agents. A key factor influencing MDR is the altered redox state within cancer cells, characterized by varying levels of reactive oxygen species (ROS). Understanding the dynamics of ROS is crucial, as they can both promote and inhibit tumor progression. Glioblastoma, a highly aggressive and treatment-resistant brain cancer, exemplifies the challenges associated with MDR, often exacerbated by a hypoxic tumor microenvironment and elevated ROS production. This project aims to investigate the role of ROS in MDR by integrating PhotoActivated ChemoTherapy (PACT) and recombinant D-amino acid oxidase (DAAO), a chemogenetic tool that is able to generate hydrogen peroxide (H2O2), the most stable ROS, within specific cellular compartments. PACT is an innovative anticancer treatment utilizing ruthenium-based (Ru) compounds that are selectively activated by red light in an O2-independent manner, minimizing damage to healthy tissues.

In this project, I will implement DAAO to introduce controlled levels of H2O2 into glioblastoma cells, and then treat the cells with PACT, targeting NAMPT, a protein involved in the recycling of NAD+. I will correlate cancer cell resistance to PACT treatment with ROS levels, which will be monitored via Genetically Encoded Fluorescent Indicators (GEFIs). The project includes i) developing targeted ROS generation systems during a secondment at the nearby hospital, ii) exploring cellular adaptive responses, and iii) conducting in vivo mouse studies to validate the results from in vitro experiments. This project aims to combine chemogenetic applications and PACT for the first time. This innovative research has the potential to provide significant insights into the role of ROS in cancer therapy resistance, and to propose effective strategies to overcome MDR, thereby advancing glioblastoma treatment.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2024-PF-01

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Coordinator

UNIVERSITEIT LEIDEN
Net EU contribution
€ 232 916,16
Address
RAPENBURG 70
2311 EZ Leiden
Netherlands
Activity type
Higher or Secondary Education Establishments
Links
Total cost
No data

Partners (1)