Senescent Cell Separation via Protocadherin Adhesion
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Solution Overview
Problem
Current methods fail to effectively separate senescent cells from heterogeneous cell populations, as they do not distinguish between senescent and non-senescent cells based on their unique characteristics, hindering subsequent experiments and therapeutic applications.
Innovation Solution
The method involves using a non-pretreated vessel to attach senescent cells, which adhere differently than young cells, and separating them using enzymes, while also employing agents like shRNA to inhibit protocadherin expression, allowing for selective removal of senescent cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional cell culture methods are used, then cells can be cultured, but senescent cells cannot be selectively separated from heterogeneous cell populations
Solution Approach 1:
The invention changes the surface treatment parameter of the culture vessel from conventional treated surfaces to non-pretreated surfaces. This parameter change causes senescent cells to adhere specifically to the non-pretreated surface while non-senescent cells do not, enabling selective separation based on adhesion differences without requiring complex separation devices
Solution Approach 2:
The invention extracts and utilizes the specific adhesion property of senescent cells to non-pretreated surfaces as a selective marker. By using this natural adhesion difference, the method extracts the separation function from complex mechanical or chemical separation systems, achieving precise cell separation through a simple cultural condition change
2Reliability
If cell adhesion properties are used for separation, then senescent cells can be attached to vessels, but non-senescent cells may also adhere
Solution Approach 1:
The invention applies local quality by creating a specific surface environment (non-pretreated surface) that selectively interacts with senescent cells. The untreated surface provides specific adhesion properties that only senescent cells possess, while non-senescent cells remain unaffected, achieving high selectivity through localized surface condition modification
Solution Approach 2:
Instead of treating the vessel surface to promote general cell adhesion (conventional approach), the invention inverts the approach by using a non-pretreated surface that selectively adheres only senescent cells. This inversion of the adhesion promotion strategy creates a selective separation mechanism based on the unique adhesion properties of senescent cells
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 enables the efficient separation and removal of senescent cells, maintaining their characteristics and facilitating experiments or treating aging-related symptoms by exploiting the unique adhesion properties and protocadherin expression of senescent cells.
Implementation Method 1
Senescent cells are characterized in that they show a flat and enlarged morphology with increased beta-galactosidase (β-galactosidase) activity at a particular pH. Senescent cells can be selectively distinguished by these features
Implementation Method 2
The present disclosure relates to a method of separating senescent cells using overexpression of protocadherin
Implementation Method 3
separating the adherent senescent cells from the vessel
Data Source
AI summary
Provided is a method of separating senescent cells from a sample including the senescent cells, and a method of removing senescent cells from a sample or a subject including the senescent cells.