Human Plasma-Like Cell Culture Medium for In Vivo Metabolic Replication
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Solution Overview
Problem
Conventional mammalian cell culture media poorly reflect in vivo nutrient conditions, leading to suboptimal cell behavior and response to therapeutic agents due to the absence of metabolites present in human blood.
Innovation Solution
Development of a basal culture medium comprising a combination of proteinogenic amino acids, vitamins, inorganic ions, and small organic compounds, including uric acid, to create an environment that mimics in vivo conditions, which can be supplemented with serum or serum substitutes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional synthetic cell culture media are used, then large amounts of medium can be produced with less inherent variability, but the media poorly reflect in vivo nutrient conditions leading to suboptimal cell behavior
Solution Approach 1:
The patent applies parameter changes by modifying the chemical composition parameters of cell culture media to match in vivo plasma conditions. Specifically, it adjusts concentrations of metabolites including uric acid (to physiological levels of 350 μM), lactate, pyruvate, and other small organic compounds to reflect their natural in vivo concentrations, thereby improving both compositional stability and physiological relevance simultaneously
Solution Approach 2:
The patent uses the copying principle by creating an artificial plasma-like medium that replicates the metabolic composition of human plasma. It copies the in vivo metabolic profile by incorporating the same metabolites (uric acid, lactate, pyruvate, amino acids, vitamins) at concentrations matching physiological conditions, allowing cells to be cultured in an environment that mirrors their natural in vivo metabolic milieu
2Reliability
If natural media such as biological fluids and tissue extracts are used, then in vivo nutrient conditions are better reflected, but inherent variability increases
Solution Approach 1:
The patent transforms natural media into a stable synthetic formulation by precisely controlling the concentrations of all metabolite components. It defines specific parameter ranges for each metabolite (uric acid at 350 μM, lactate, pyruvate, amino acids, vitamins) to match in vivo conditions while eliminating batch-to-batch variability inherent in natural extracts, achieving both physiological accuracy and compositional stability
Solution Approach 2:
The patent creates a composite synthetic medium that combines multiple purified metabolites (uric acid, lactate, pyruvate, amino acids, vitamins, inorganic ions) in defined proportions to replicate the complex composition of natural plasma. This composite approach captures the benefits of natural media's physiological relevance while eliminating its variability through precise formulation
Data Source
Figure 1A~1B
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Figure 1E
AI summary
In some aspects, described herein are cell culture media that are useful for in vitro culture of mammalian cells. The culture media contain a variety of small organic compounds that are found in normal adult human blood. Also described are methods of using the culture media for a variety of purposes. Also described are methods of treating cancer.