Chemically Defined Medium for Cancer Stem Cell Culture

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current biologically relevant culture systems for cancer stem cells (CSCs) are poorly developed, hindering their reliable characterization and maintenance, as existing methods are not suitable for long-term culture and often lead to the loss of CSCs due to heterogeneous and delicate nature of these cells, and the lack of specificity in marker-based detection methods.

Innovation Solution

A chemically defined medium for eukaryotic cell culture comprising water, carbon sources, vitamins, salts, fatty acids, selenium, and trace elements, which supports continuous proliferation and serial passageability of 3D tumorspheres, enabling the maintenance and characterization of CSCs in a standardized environment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional culture systems are used for cancer stem cells, then general cell culture requirements are met, but CSC self-renewal capabilities and long-term maintenance are lost

Engineering Contradiction:

ImproveCSC self-renewal capabilityVSAvoidlong-term culture duration

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The invention modifies the chemical composition parameters of the culture medium by adding specific growth factors (EGF, bFGF, IGF-1, HGF) and cytokines (IL-6, LIF) to standard basal medium, creating optimized culture conditions that specifically support CSC self-renewal and long-term maintenance while maintaining general cell culture requirements

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If marker-based detection methods are used for CSC identification, then detection is simplified, but specificity and correlation with functional CSC features are reduced

Engineering Contradiction:

Improvedetection simplicityVSAvoidmarker specificity

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The invention employs a multi-marker detection system that combines several surface markers (CD44, CD133, ALDH1, ABC transporters) to cross-validate CSC identification, providing feedback mechanisms that improve detection specificity and correlation with functional CSC features while maintaining operational simplicity through standardized protocols

Inventive Principle:

Principle #23Feedback

3Adaptability or versatility

If heterogeneous CSC populations are cultured, then diverse CSC types are maintained, but culture stability and consistency are reduced

Engineering Contradiction:

ImproveCSC type diversityVSAvoidculture consistency

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The invention develops a universal culture medium formulation that can support multiple types of cancer stem cells from different tissue origins through the inclusion of broad-spectrum growth factors and cytokines, enabling diverse CSC populations to be maintained under consistent culture conditions while preserving their specific biological characteristics

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11584917B2Chemically defined medium for the culture of cancer stem cell (CSC) containing cell populations

Publication Date: 2023.02.21 PROMOCELL GMBH

AI summary

The present invention relates to a chemically defined medium for eukaryotic cell culture, comprising water, at least one carbon source, one or more vitamins, one or more salts, one or more growth factors, one or more fatty acids, one or more buffer components, selenium and one or more further trace elements and its use in the culture of cancer stem cells, in particular tumorsphere culture of cancer stem cells.