Insect Cell Medium for Bartonella Cultivation
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Solution Overview
Problem
The cultivation of sophisticated bacteria, such as those from the genus Bartonella, is hindered by slow growth rates and contamination issues in existing media, making diagnostic and molecular analysis challenging.
Innovation Solution
A composition comprising insect cell culture medium and fetal calf serum (FCS) is used to create a liquid culture medium that supports rapid growth of sophisticated bacteria, eliminating the need for highly supplemented blood agars and allowing for cost-effective production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If highly supplemented blood agar (chocolate agar, sheep blood agar) is used for cultivation, then sophisticated bacteria can be cultivated, but incubation times become very long (up to 45 days) resulting in contamination problems
Solution Approach 1:
The patent changes the fundamental parameters of the culture medium by switching from solid blood agar to liquid insect cell culture medium, and from mammalian blood to insect-derived components. This parameter transformation enables rapid growth (within 7-10 days instead of 45 days) while maintaining cultivation capability for sophisticated bacteria like Bartonella.
Solution Approach 2:
The patent employs insect cell culture medium which uses insect-derived components that are more readily available and have shorter cultivation cycles compared to mammalian blood products. This allows for faster turnover and reduces the time window for contamination while maintaining effective cultivation.
2Reliability
If WO 03/012058 medium is used, then sophisticated microorganisms can be cultivated, but growth remains very slow and the medium consists of 20 individual substances making production complicated
Solution Approach 1:
The patent extracts and utilizes specific growth-promoting components from insect cell culture media that are essential for sophisticated bacteria growth, while omitting the complex mixture of 20 individual substances from the WO 03/012058 formulation. This extraction approach maintains cultivation capability while dramatically simplifying production and accelerating growth.
Solution Approach 2:
The patent adopts insect cell culture medium which serves multiple functions: it provides essential nutrients, growth factors, and a suitable osmotic environment for sophisticated bacteria. This multi-functional medium replaces the need for complex multi-component formulations, simplifying production while maintaining high productivity.
3Reliability
If WO 03/012058 medium is used, then sophisticated bacteria can be cultivated, but the medium requires addition of sheep blood making the suspension cloudy and not allowing evaluation of optical density
Solution Approach 1:
The patent replaces sheep blood with insect cell culture medium components that do not cause clouding. This substitution maintains cultivation capability while enabling clear suspensions suitable for optical density measurements, thereby improving ease of operation for quantitative analysis.
4Reliability
If conventional blood agar media are used, then sophisticated bacteria can be cultivated, but production is costly and complex
Solution Approach 1:
The patent employs insect cell culture medium which uses insect-derived components that are generally more cost-effective and easier to produce at scale compared to mammalian blood products. This simplifies manufacturing while maintaining reliable cultivation capability for sophisticated bacteria.
Solution Approach 2:
The patent transforms the medium formulation from complex blood-based compositions to simplified insect cell culture-based formulations. This parameter change reduces the number of components, simplifies manufacturing processes, and lowers costs while preserving the essential cultivation functionality.
Data Source
AI summary
The present invention relates to a composition for the cultivation of sophisticated bacteria, preferably of the genus Bartonella, and to a method for the cultivation of these bacteria.