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Updated: Jun 4, 2025
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Generation of Standardized and Reproducible Forebrain-type Cerebral Organoids from Human Induced Pluripotent Stem Cells
Published on: January 23, 2018
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Synthetic organizer cells guide development via spatial and biochemical instructions
Toshimichi Yamada1, Coralie Trentesaux2, Jonathan M Brunger1
1Cell Design Institute and Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA.
Cell
|December 20, 2024
Summary
Engineered synthetic organizer cells provide spatial cues for embryonic stem cell (ES) development. Precise control over morphogen gradients influences anterior-posterior (A-P) axis formation and tissue morphology, enabling directed differentiation.
Area of Science:
- Developmental Biology
- Stem Cell Biology
- Tissue Engineering
Background:
- In vitro stem cell development often lacks native spatial information crucial for morphogenesis.
- Current methods rely on media-borne morphogens, limiting control over spatial signaling.
- Embryonic stem cells (ES cells) require precise cues for directed differentiation.
Purpose of the Study:
- To engineer self-assembling organizer cells that secrete morphogens.
- To create defined morphogen gradients around ES cells for controlled development.
- To investigate the correlation between morphogen gradient properties and developmental outcomes.
Main Methods:
- Programmed morphogen-secreting organizer cells engineered for self-assembly around mouse ES cells.
- Induction of WNT3A (morphogen) and DKK1 (antagonist) to generate variable morphogen gradients.
- Analysis of gradient range and steepness effects on cell lineage and tissue morphology.
Main Results:
- Generated diverse WNT activity gradients with controlled range and steepness.
- Demonstrated strong correlation between gradient properties and anterior-to-posterior (A-P) axis cell lineage specification.
- Observed higher-resolution tissue morphologies, including cardiac-like structures and endothelial networks, with shallow gradients.
Conclusions:
- Synthetic organizer cells integrate spatial, temporal, and biochemical information for directed stem cell development.
- Morphogen gradient characteristics critically influence developmental pathways and tissue formation.
- This approach offers a flexible platform for systematically directing ES cell differentiation.
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