Developmental neurotoxicity testing using stem cells

02:272 years ago

Children should grow up in a safe and healthy environment. Disruption of brain development may have enormous impact on future life and might result in disorders such as ADHD or cognitive decline. The effect of compound exposure on the developing brain is largely unknown, since in the current regulatory test procedures in experimental animals effects on the brain are rarely investigated and human relevance of these animal models is under debate.
Researchers at RIVM are developing a cell model based on human stem cells that mimics a small part of the developing brain. This method is human-relevant, animal-free, and based on mechanistic knowledge of human biology and physiology of brain development. The model can be an important component in a testing strategy to test the safety of chemicals and pharmaceuticals on the developing brain.

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Cells4Thought: using iPSCs for neurodevelopmental health
Projects and initiatives
HealthToxicologyInnovationIn vitro

Cells4Thought: using iPSCs for neurodevelopmental health

The prevalence of neurodevelopmental disorders (NDDs), including cognitive impairments, is increasing worldwide with great impact on daily life quality. There is evidence that exposure to chemicals may contribute to the incidence of NDD. However, a causal link is lacking. Towards this goal, a human-relevant in vitro model system mimicking parts of brain development, such as neuronal network functioning, could be used for mechanistic research on how gene-environment interactions contribute to the development of NDD. This is going to be studied in the project Cells4Thought, using induced pluripotent stem cells form different individuals to study the effect of chemicals on neuronal differentiation.
02:3828 days ago
We all want a safer world for humanity, animals and the environment: Transition Animal-free Innovation
Projects and initiatives
HealthInnovationPolicy

We all want a safer world for humanity, animals and the environment: Transition Animal-free Innovation

Why is the transition to animal-free research so important? What are animal-free models? How does TPI (Transition Animal-Free Innovation) encourage their development and use? And who are we working with to make this happen? We explain this in our animation. More and more animal-free tests and research methods are becoming available, but not all research questions or safety tests can be answered in this way yet. In addition, the validation, qualification and acceptance of non-animal innovations still lags behind. Therefore, the Dutch Ministry of Agriculture, Nature and Food Quality (LNV) stimulates the development and application of animal-free innovations. This is done with the partner programme Transition Animal-free Innovation (TPI).
02:482 months ago
New approaches for cancer hazard assessment
Innovation examples

New approaches for cancer hazard assessment

Chemical substances are subjected to assessment of genotoxic and carcinogenic effects before being marketed to protect man and the environment from health risks. For cancer hazard assessment, the long-term rodent carcinogenicity study is the current mainstay for the detection of nongenotoxic carcinogens. However, carcinogenicity studies are shown to have prominent weaknesses and are subject to ethical and scientific debate. A transition toward a mechanism-based weight of evidence approach is considered a requirement to enhance the prediction of carcinogenic potential for chemicals. At RIVM, we are working on this alternative approach for cancer hazard assessment, which makes optimal use of innovative (computational) tools and be less animal demanding. For more information, click on the link in the video or read on here (https://doi.org/10.1080/10408444.2020.1841732) and here (https://doi.org/10.1080/10408444.2018.1458818). Contact the expert (https://nl.linkedin.com/in/mirjamluijten)
03:142 months ago
Helpathon #10 – Can you help Jolanda and Elza?
Meeting videos
HelpathonsEducation

Helpathon #10 – Can you help Jolanda and Elza?

Jolanda van der Velden, Chair of Physiology, and Elza van Deel, Educator, from Amsterdam University Medical Center want to support PhDs in preparing for the animal-free transition. They are both looking for an implementation strategy and course design. Do you have an interest in animal-free education and education about animal-free research? Read more and register here (https://www.helpathonhotel.org/coming-up).
00:553 months ago