CD Marker Screening of Neuronal Regeneration-Promoting Cells
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Solution Overview
Problem
Existing methods for isolating mesenchymal stem cells are invasive, painful, and inefficient, limiting the availability of neuronal regeneration-promoting cells for neurological disease treatment.
Innovation Solution
A method for screening neuronal regeneration-promoting cells by analyzing specific CD markers such as CD121a, CD106, CD112, CD26, and CD141 in differentiated mesenchymal stem cells, identifying cells with up-regulated CD121a, CD106, and CD112 and down-regulated CD26 and CD141 expression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If neuronal progenitor cells are transplanted to promote endogenous neuronal regeneration, then neuronal regeneration is enhanced, but it remains unclear whether this promotes axonal regeneration or sprouting of existing neurons
Solution Approach 1:
The patent introduces a reporter gene system (GFP, RFP, or mCherry) as an intermediary marker to distinguish between transplanted neuronal progenitor cells and host neurons. This allows researchers to track and differentiate cell origins, thereby identifying whether regeneration comes from transplanted cells or host neuron sprouting.
Solution Approach 2:
The patent replaces traditional mechanical/histological identification methods with molecular genetic markers (reporter genes). By using fluorescent protein reporters, the system enables optical detection and differentiation of cell types, substituting complex histological analysis with simpler fluorescent imaging.
2Productivity
If conventional transplantation methods are used, then neuronal progenitor cells can be administered, but the mechanism of action (axonal regeneration vs. sprouting) cannot be determined
Solution Approach 1:
The patent applies preliminary action by pre-marking neuronal progenitor cells with reporter genes before transplantation. This advance labeling allows subsequent tracking of cell fate and regeneration mechanisms, preserving information that would otherwise be lost in conventional transplantation methods.
Solution Approach 2:
The patent uses color changes through fluorescent protein reporters (GFP for green, RFP/mCherry for red) to visually distinguish transplanted cells from host neurons. This color-coding system enables direct observation of which cell type contributes to regeneration, preventing loss of mechanism information.
3Reliability
If endogenous neuronal regeneration is promoted, then nerve function recovery is enhanced, but the specific contribution of transplanted cells versus host neurons is unclear
Solution Approach 1:
The reporter gene system serves as an intermediary marker that enables precise measurement of cell contributions. By tagging transplanted cells with fluorescent proteins, researchers can quantitatively assess whether regeneration comes from transplanted cells or host neuron sprouting, improving measurement precision.
Solution Approach 2:
The patent creates a genetic copy (reporter gene) within the transplanted cells that replicates their identity. This genetic marker is inherited by daughter cells and allows continuous tracking of transplanted cell lineage, enabling precise quantification of their contribution to regeneration.
Data Source
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AI summary
The present disclosure relates to method for screening mesenchymal stem cell-derived, neuronal regeneration-promoting cells having neuronal regeneration activity and a pharmaceutical composition containing the neuronal regeneration-promoting cells. The neuronal regeneration-promoting cells of the present disclosure are completely different from stem cells in terms of the expression pattern of a CD marker and exhibit an excellent neuronal regeneration effect. Accordingly, they can be applied in various fields for preventing or treating neurological diseases.