Defined Culture Medium for Prostate Cancer Organoid Formation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing culture methods for prostate cancer organoids have low growth and formation efficiency, and existing culture media impact the nature of the organoids, necessitating a more effective culture medium and method.
Innovation Solution
A culture medium comprising R-spondin1, Noggin, FGF2, FGF10, CHIR99021, ALK inhibitor, ROCK inhibitor, nicotinamide, and sodium pyruvate, along with a co-culture method using prostate stromal cells, to enhance proliferation, self-renewal, and formation efficiency of prostate cancer organoids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If FBS serum and conventional culture methods are used, then organoids can be cultured, but the formation efficiency and vital cell quantity are poor
Solution Approach 1:
The patent changes the chemical composition parameters of the culture medium by replacing FBS serum with a defined medium containing specific growth factors (R-spondin1, Noggin, FGF2, FGF10), small molecule inhibitors (CHIR99021, ALK inhibitor, ROCK inhibitor), and supplements (nicotinamide, sodium pyruvate). This parameter change resolves the contradiction by achieving both high formation efficiency and maintained cell vitality simultaneously.
Solution Approach 2:
The patent creates a composite culture medium by combining multiple purified components (growth factors, inhibitors, supplements) in specific concentrations. This composite approach replaces the complex FBS serum with a defined mixture that provides all necessary nutrients and signaling molecules, resolving the contradiction between formation efficiency and cell vitality.
2Productivity
If FBS serum is added to culture medium, then organoids can grow, but the nature of organoids is impacted
Solution Approach 1:
The patent changes the medium composition from undefined FBS serum to a defined medium with specific growth factors and inhibitors. This ensures that the culture conditions are controlled and reproducible, maintaining organoid nature while supporting growth.
Solution Approach 2:
The patent extracts and isolates specific beneficial components from the complex FBS serum (such as growth factors and signaling molecules) and uses them in purified forms. This extraction approach eliminates the unwanted components of FBS that impact organoid nature while retaining the essential growth-promoting factors.
3Reliability
If conventional culture methods are used, then organoids can be maintained, but growth and formation efficiency are low
Solution Approach 1:
The patent optimizes the concentration parameters of various growth factors and inhibitors in the culture medium. By adjusting these parameters (e.g., R-spondin1 at 15-200 ng/mL, Noggin at 20-150 ng/mL, CHIR99021 at 0.5-1 μM), the patent achieves both reliable organoid maintenance and high growth efficiency simultaneously.
Solution Approach 2:
The patent implements a continuous culture system with optimized medium composition that provides sustained growth factors and inhibitors. This continuous provision of necessary components maintains organoids reliably while promoting continuous growth and high formation efficiency.
Data Source
AI summary
A culture medium and a culture method for constructing prostate cancer organoids are provided. The culture medium includes a basic culture medium, and the following components with final concentrations: R-spondin1 15-200 ng/mL, Noggin 20-150 ng/mL, FGF2 5-15 ng/mL, FGF10 1-10 ng/mL, CHIR99021 0.5-1 μM, ALK inhibitor 0.25-1 μM, ROCK inhibitor 5-30 μM, nicotinamide 5-10 mM and sodium pyruvate 0.5-3 mM. The present culture medium and culture method can effectively improve the survival rate and formation efficiency of organoids through the compounding of each component.