Integrin Alpha10beta1 Marker for Neural Stem Cell Isolation
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Solution Overview
Problem
Current methods for isolating and identifying neural stem cells and neural progenitor cells are hindered by the lack of specific markers that can effectively distinguish these cells from differentiated cell types and other contaminants, limiting their use in therapeutic applications for neurological injuries and disorders.
Innovation Solution
The use of integrin α10β1 as a marker for identifying and isolating mammalian neural stem cells and neural progenitor cells, which is expressed on all three cell types in the adult mouse subventricular zone stem cell niche, allowing for their selective identification and isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing markers (Sox2, Nestin, PSA-NCAM, GFAP, CD133, PDGFR-α) are used to identify neural stem cells, then neural stem cells can be detected, but the markers lack specificity and cannot effectively distinguish neural stem cells from differentiated cell types and contaminants
Solution Approach 1:
The patent applies local quality by identifying that integrin α10β1 is specifically expressed on the surface of neural stem cells and neural progenitor cells in the subventricular zone, while existing markers are either intracellular or expressed on multiple cell types. This localized surface expression provides the specificity needed to distinguish neural stem cells from other cell types.
Solution Approach 2:
The patent changes the parameter of marker location from intracellular (Sox2, Nestin) to cell surface (integrin α10β1), enabling flow cytometry and magnetic-activated cell sorting applications. This parameter change transforms the marker from research-only use to clinically applicable isolation and purification.
2Measurement precision
If intracellular markers (Sox2, Nestin) are used to identify neural stem cells, then neural stem cells can be detected, but these markers cannot be used for isolating and selecting functional NSCs
Solution Approach 1:
The patent replaces the need for intracellular extraction and immunocytochemistry with surface marker detection using flow cytometry and magnetic-activated cell sorting. This substitution of detection methodology enables direct isolation and selection of functional NSCs without complex intracellular processing.
3Adaptability or versatility
If markers expressed on multiple cell types are used, then broader cell populations can be identified, but the ability to purify neural stem cells from differentiated cell types and contaminants is reduced
Solution Approach 1:
The patent achieves local quality by demonstrating that integrin α10β1 is specifically expressed on neural stem cells and neural progenitor cells in the subventricular zone, while other markers are either intracellular or expressed on multiple cell types. This localized expression pattern enables high-purity isolation of neural stem cells from mixed cell populations.
Data Source
AI summary
The present application concerns methods for detecting and isolating a population of neural stem cells (NSC) or neural progenitor cells (NPC) based on expression of the marker integrin alpha10beta1; as well as use of said population of NSC or NPC for therapy, diagnosis and prognosis of disease and damage of the CNS.