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Vascular network-inspired diffusible scaffolds for engineering functional neural organoids.

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    Vascular network-Inspired Diffusible (VID) scaffolds enhance organoid development by improving nutrient and oxygen diffusion. This leads to more functional engineered organoids and better drug response modeling, overcoming limitations of current methods.

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    Area of Science:

    • Biotechnology
    • Developmental Biology
    • Neuroscience

    Background:

    • Organoids are 3D in vitro cultures with potential in medicine but face diffusion limitations.
    • Neural organoids, in particular, suffer from poor oxygen, nutrient, and drug diffusion.
    • Current organoid models have limited physiological relevance and drug response accuracy.

    Purpose of the Study:

    • To develop Vascular network-Inspired Diffusible (VID) scaffolds for improved organoid generation.
    • To overcome diffusion limitations in organoid cultures.
    • To enhance the functionality and drug response phenotyping of engineered organoids.

    Main Methods:

    • 3D printing of meshed tubular channel networks (VID scaffolds).
    • Generation of engineered human midbrain organoids using VID scaffolds.
    • Comparison of engineered organoids with conventional organoids regarding necrosis, hypoxia, and function.
    • Assessment of drug response in engineered versus conventional organoids.

    Main Results:

    • VID scaffolds enabled the generation of engineered human midbrain organoids with minimal necrosis and hypoxia.
    • Engineered organoids exhibited enhanced physiological relevance, including midbrain identity, oxygen metabolism, and neuronal maturation.
    • Engineered organoids demonstrated more accurate recapitulation of drug responses, such as to fentanyl exposure.
    • Improved neuronal network activity was observed in engineered organoids.

    Conclusions:

    • VID scaffolds effectively address diffusion limitations in organoid culture.
    • Engineered organoids generated using VID scaffolds offer improved physiological relevance and functionality.
    • This approach holds promise for advancing organoid development and drug discovery.
    • VID scaffolds and engineered organoids can provide insights for therapeutic innovation.