Enteric Neural Precursor Expansion While Preserving Differentiation
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Solution Overview
Problem
Existing methods lack a technique for efficiently producing large quantities of enteric neural precursors (ENPs) while maintaining their differentiation capacity into enteric nerve cells and glial cells.
Innovation Solution
A method involving culturing ENPs or neural crest cells in a medium containing ERBB3 and/or ERBB4 agonists, along with optional additives like TGFβ and GSK3β inhibitors, retinoic acid, and Matrigel®, to promote proliferation and expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If existing methods are used to produce enteric neural precursors, then the differentiation capacity into enteric nerve cells and glial cells is maintained, but the quantity produced is insufficient for therapeutic applications
Solution Approach 1:
The patent applies parameter changes by modifying the culture medium composition to include specific concentrations of ERBB3 agonist (10-1000 ng/mL), ERBB4 agonist (10-1000 ng/mL), TGFβ inhibitor (1-100 nM), and GSK3β inhibitor (1-100 μM). These parameter optimizations enable significant proliferation of enteric neural precursors while preserving their differentiation capacity, directly resolving the contradiction between quantity production and productivity.
2Quantity of substance
If the quantity of enteric neural precursors is increased through proliferation, then large amounts are available for therapy, but the differentiation capacity may be compromised
Solution Approach 1:
The patent uses ERBB3 agonists and ERBB4 agonists as intermediary substances to mediate cell proliferation while maintaining differentiation potential. These agonists act as signaling molecules that stimulate cell division through ERBB receptor pathways without triggering terminal differentiation, thereby enabling quantity increase while preserving functional reliability.
Solution Approach 2:
The patent employs parameter changes by carefully controlling the concentration ranges of culture medium components, particularly ERBB3 agonist (10-1000 ng/mL) and ERBB4 agonist (10-1000 ng/mL), to achieve a state where cells proliferate actively but maintain multipotency. This precise parameter control resolves the contradiction between quantity and differentiation capacity preservation.
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
This approach allows ENPs to proliferate significantly while retaining their ability to differentiate into enteric nerve cells and glial cells, facilitating the production of large quantities for therapeutic applications.
Implementation Method 1
culturing the enteric neural precursors in a medium comprising an ERBB3 agonist and/or an ERBB4 agonist
Implementation Method 2
the medium further comprises a TGFβ inhibitor and a GSK3β inhibitor
Implementation Method 3
the medium further comprises retinoic acid and/or a derivative thereof
Data Source
AI summary
A method for producing enteric neural precursors, comprising the steps of: (1) providing enteric neural precursors; and (2) culturing the enteric neural precursors in a medium comprising an ERBB3 agonist and/or an ERBB4 agonist is provided as a technique for allowing enteric neural precursors to proliferate by culture while maintaining their differentiation capacity into enteric nerve cells and glial cells.