Naive Stem Cell Maintenance via NM23 and MUC1* Pathway

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current methods for propagating and maintaining human Naive stem cells are inefficient and can only transiently hold cells in the Naive state, making it difficult to achieve stable conversion of Primed stem cells to the Naive state.

Innovation Solution

Culturing human stem cells with NM23 in the absence of mouse feeder cells or fibroblast growth factor (FGF), and optionally on a surface coated with MUC1* antibody, to stimulate the MUC1* pathway and maintain the cells in the Naive state.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If current methods are used to propagate and maintain human Naive stem cells, then cells can be cultured, but they can only transiently hold cells in the Naive state and the process is inefficient

Engineering Contradiction:

Improveduration of Naive state maintenanceVSAvoidefficiency of stem cell propagation

Core Design Contradiction:

Duration of action of moving objectVSProductivity

Solution Approach 1:

The patent changes the culture parameters by replacing mouse feeder cells and FGF with human fibroblast feeder cells and bFGF, respectively. This parameter change enables stable maintenance of Naive stem cells in the Naive state while improving propagation efficiency, directly resolving the contradiction between duration of Naive state maintenance and productivity

Inventive Principle:

Principle #35Parameter changes

2Reliability

If mouse feeder cells and FGF are used, then stem cells can grow, but stable conversion of Primed stem cells to the Naive state cannot be achieved

Engineering Contradiction:

Improvestability of Naive state conversionVSAvoidease of stem cell culture

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent uses human fibroblast feeder cells as an intermediary to provide a stable culture environment that supports Naive state maintenance. The feeder cells secrete bFGF and other factors that mediate the stable conversion and maintenance of Naive stem cells, resolving the contradiction between reliability of conversion and ease of culture

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP3524672B1Reprogramming cancer cells

Publication Date: 2025.05.28 MINERVA BIOTECHNOLOGIES CORP

Figure 1
Figure 2
Figure 3A~3B

AI summary

The present describes methods for growing and maintaining Naive stem cells; and for separating Naive stem cells from a mixed population of cells.