3D Brain Microphysiological Systems for Accurate CNS Disease Modeling

The patent transitions from simple 2D neural cultures to 3D brain microphysiological systems (BMPS) that replicate the three-dimensional architecture of the brain. The BMPS include nested structures with neurons, glial cells, and vascular elements arranged in spatial configurations that mirror the brain's complex geometry, enabling accurate modeling of physiological processes while maintaining manufacturability through standardized protocols.

The patent creates composite neural systems by integrating multiple cell types (neurons, astrocytes, oligodendrocytes, microglia) and extracellular matrix components into unified BMPS. This composite approach allows the system to simultaneously model diverse physiological functions, cellular interactions, and genetic characteristics of the mammalian brain, resolving the contradiction between simplicity and biological accuracy.

The patent divides the complex brain system into distinct functional modules within the BMPS, including neuronal networks, glial cell populations, vascular structures, and neural stem cell niches. Each module can be independently cultured, manipulated, and analyzed while maintaining their interactions within the integrated 3D structure, thereby managing system complexity through modular organization.

The patent uses induced pluripotent stem cells (iPSCs) derived from patients to create patient-specific BMPS that copy the genetic and epigenetic characteristics of the original brain tissue. This copying approach enables accurate modeling of disease states and individual variability without requiring direct access to the complex in vivo brain environment, thus managing complexity through cellular replication.

The patent establishes standardized protocols for reprogramming somatic cells to iPSCs and for differentiating iPSCs into the required neural cell types before disease modeling. These preliminary actions create reusable reagents and methodologies that can be applied to multiple patient samples, reducing the complexity and time required for each individual disease model while maintaining patient-specific relevance.

The patent develops a universal BMPS platform that can accommodate various neural cell types, disease models, and therapeutic interventions within a single system architecture. This multi-functional platform allows the same basic BMPS design to serve diverse applications including neurodevelopmental studies, disease mechanism analysis, drug testing, and personalized medicine, thereby reducing overall manufacturing complexity through standardization.