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Stretchable mesh-electrodes interfacing human iPSC brain organoids

Project description

Novel soft electrodes 'cultured' with neural precursor cells will help study brain development

The brain contains about 100 billion neurons and about as many glial cells. These cells organise during development into structurally and functionally different tissues that work together to enable cognition, movement, sensation, emotion and more. Cell culture capabilities have progressed from individual cell colonies to functional 3D structures acting like organ systems (assembloids). Now, methods to study and manipulate assembloids must catch up. The STRELECOID project is planning to integrate novel stretchable mesh electrodes into neurospheres, free-form clusters of neural precursor cells. The electrodes will be used to apply physiological sensory input to the developing 'brain' or assembloid as well as to monitor changes. Ultimately, researchers hope to gain insight into often-debilitating neuropsychiatric conditions such as schizophrenia and autism.

Objective

Recent advances in cellular engineering allow to recruit skin cells from donors and reprogram them into neural stem cells. These induced pluripotent stem cells (iPSC) bear the genetic code of the human patient. Efforts to culture these cells in-vitro have been successful in creating a wide variety of 3D arrangements called neurospheres. Because the human central nervous system is by and large inaccessible at all developmental stages, these functional tissue preparations are invaluable. Furthermore, clinical studies performed in animal models are known to translate poorly to humans and therefore these systems provide unprecedented advantages: human neurons in a controlled environment that have the genetic signature of psychiatric or mental disorders borne by the donor patient, such as Alzheimer’s or Parkinson’s disease. Finally, compared to animal studies where overwhelmingly only male animals are studied, stem cell research can operate on both sexes.
The combination of new biomaterials, genome engineering and massively parallel single-cell transcriptomics opens opportunities to precisely study human brain disease
A new exciting development is the possibility to form so-called assembloids, whereby organoids of different brain regions, as for example cortical and thalamic neural ensembles, are brought in proximity and self-assemble into anatomically correct brain regions. These approaches are necessary to study disorders like epilepsy. However these cultures lack physiological sensory input which are key in the development of mental plasticity. Here we plan to overcome this limitation by integrating new mesh-based electrodes that integrate seamlessly into brain tissue and expand symbiotically with the neurosphere as it grows, and thereby have a spatially refined mean to measure but also elicit neural activity. This will shed light on how electric maturation of these neurospheres comes about and help shape them to an anatomically more faithful brain model.

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MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)

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Call for proposal

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(opens in new window) H2020-MSCA-IF-2018

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Coordinator

FORSCHUNGSZENTRUM JULICH GMBH
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 246 669,12
Address
WILHELM JOHNEN STRASSE
52428 JULICH
Germany

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Region
Nordrhein-Westfalen Köln Düren
Activity type
Research Organisations
Links
Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 246 669,12

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