Low Molecular Weight Agar for Cell Dispersion and Image Analysis
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Solution Overview
Problem
Current cell culture methods using polymer compounds like deacylated gellan gum face challenges in cell image analysis due to cells or tissues floating, preventing lens focusing, and require improved dispersion and proliferation techniques.
Innovation Solution
The use of agar as a medium additive with a weight average molecular weight of 10,000-60,000, allowing cells and tissues to be dispersed efficiently in both floating and sedimented states, enabling effective cell image analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If polymer compounds like deacylated gellan gum are used to disperse cells in liquid medium, then cell dispersion and proliferation are improved, but cell image analysis becomes difficult due to floating cells preventing lens focusing
Solution Approach 1:
The patent changes the physical-chemical parameters of the culture medium by introducing agar with specific molecular weight (10,000-60,000) and controlling its concentration (0.001-5 w/v%). This parameter change enables cells to be dispersed while allowing them to settle into a sedimented state that is suitable for image analysis, resolving the contradiction between dispersion and detectability
Solution Approach 2:
Agar acts as an intermediary substance that mediates between the liquid medium and cells. It provides a framework that allows cells to be dispersed throughout the medium while enabling them to settle and form a sedimented state, thus facilitating both dispersion culture and subsequent image analysis
2Ease of operation
If agar concentration is increased to improve cell dispersion, then cell distribution is enhanced, but medium viscosity increases excessively
Solution Approach 1:
The patent optimizes the agar concentration parameter to a specific range (0.001-5 w/v%) and selects agar with controlled molecular weight (10,000-60,000). This parameter optimization achieves effective cell dispersion while preventing excessive viscosity increase, as the low molecular weight agar provides dispersion benefits with minimal impact on medium flow properties
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
Agar-based medium compositions facilitate well-dispersed cell cultures, allowing for efficient analysis and proliferation, particularly for adherent cells and cancer cells, while maintaining low viscosity and promoting the formation of spheres without excessive coagulation.
Implementation Method 1
cells or tissues can be dispersed well by using agar as a medium additive
Implementation Method 2
cells or tissues can be cultured in suspension by uniformly dispersing them in a stationary state in a liquid medium
Implementation Method 3
adherent cells are cells that require a scaffold for growth and proliferation
Implementation Method 4
promoting the formation of spheres without excessive coagulation
Implementation Method 5
without substantially increasing the viscosity of the liquid medium
Data Source
AI summary
The invention provides a medium additive, medium composition and a culture method and the like, capable of efficiently culturing cells or tissues in a well dispersed state, and further, permitting cell image analysis of the cells or tissues. The medium additive or medium composition contains agar, which preferably is a low molecular weight agar having a weight average molecular weight of 10,000-60,000. Using same, cells or tissues can be cultured in a well-dispersed state in a medium, and a proliferation promoting effect for the cells or tissues can also be obtained. In addition, the cells can be cultured in any of a floating state and a precipitated state by adjusting the concentration of the aforementioned agar.