Single-Lumen Cortical Organoids Using Intraluminal Pressure
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Solution Overview
Problem
Current stem cell-derived neural organoids suffer from limited scope in recapitulating human brain development and experience oxygen and nutrient stress, leading to compromised cellular fidelity and unstructured cores, necessitating improved methods for prolonged development.
Innovation Solution
Inflate neuroepithelial organoids with fluid to increase intraluminal pressure, using silicone oil, hydroxyfluoroether, or hyaluronic acid in saline, to maintain a single continuous ventricular zone and radial glial scaffold, promoting neurogenic differentiation and prolonging tissue architecture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If organoids are allowed to develop without intraluminal pressure, then they form multiple small polarized rosettes, but they lose organization and suffer oxygen and nutrient stress leading to compromised cellular fidelity
Solution Approach 1:
The patent applies hydraulic pressure by infusing liquid (such as agarose solution or culture medium) into the organoid lumen to maintain intraluminal pressure. This pressure prevents the formation of multiple rosettes, maintains single-rosette architecture, and eliminates unstructured cores, thereby preventing oxygen and nutrient stress throughout the tissue.
2Duration of action of stationary object
If intraluminal pressure is increased to maintain tissue architecture, then biomimetic radial organization is prolonged, but neurogenic differentiation is inhibited
Solution Approach 1:
The patent employs dynamic control of intraluminal pressure, adjusting pressure levels at different developmental stages. During early development, higher pressure maintains single-rosette architecture and prevents multiple rosette formation. Later, pressure is modulated to allow controlled neurogenic differentiation, achieving both prolonged architectural organization and reliable differentiation outcomes.
3Duration of action of moving object
If organoids are transplanted into animal brains for prolonged development, then tissue architecture may be maintained, but the complexity and invasiveness of the procedure increases
Solution Approach 1:
The patent implements self-service by maintaining organoids in vitro with continuous intraluminal pressure infusion, eliminating the need for transplantation into animal brains. The organoids sustain their own development, architecture, and viability through controlled pressure infusion of culture medium or agarose solution, achieving prolonged development without invasive transplantation procedures.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Inflated organoids exhibit uniform neural induction, stable single-rosette formation, and prolonged biomimetic radial organization, maintaining tissue architecture for up to three months while inhibiting neurogenic differentiation.
Implementation Method 1
pressure dramatically improves tissue architecture, preserves biomimetic radial organization for longer than any existing protocol
Implementation Method 2
Inflated organoids show more uniform neural induction than controls, with a single continuous ventricular zone and uniform radial glial scaffold spanning the entire tissue
Data Source
AI summary
Disclosed herein are single-lumen cortical organoids. Also disclosed herein are methods of inhibiting neurogenic differentiation and/or prolonging stem cell proliferation by increasing intraluminal pressure of a cortical organoid.