Protein-Free Embryo Culture Media Using Synthetic Nutrients
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Solution Overview
Problem
Current embryo culture media for human Assisted Reproduction Technologies (ART) contain human or bovine serum proteins, which pose risks of transmitting diseases such as AIDS and Creutzfeldt-Jakob disease, and there is a need for a completely protein-free medium that supports human embryo development without hazardous components.
Innovation Solution
Development of a series of substantially protein-free media, termed PFM-11, which replaces serum proteins with amino acids, antioxidants, osmolytes, vitamins, and energy sources, ensuring the medium is devoid of potentially hazardous biological components and supports human embryo development from egg retrieval to embryo transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If serum proteins (HSA/BSA) are used in embryo culture media, then embryo development is supported, but disease transmission risk increases
Solution Approach 1:
The patent removes serum proteins (HSA/BSA) from the embryo culture media, extracting the harmful component while retaining essential nutrients through alternative sources. This eliminates the vector for disease transmission while maintaining embryo development support through carefully selected amino acids, vitamins, and other non-proteinaceous nutrients.
Solution Approach 2:
The patent employs chemically defined, synthetic nutrient components that can be precisely controlled and sterilized, replacing the biological serum proteins that carry pathogen risks. These synthetic components have no associated disease transmission risk and can be manufactured under controlled conditions.
2Object-affected harmful factors
If protein-free media is used to eliminate disease risk, then safety is improved, but embryo development support may be compromised
Solution Approach 1:
The patent modifies the chemical composition parameters of the culture media by replacing protein-based nutrients with specifically formulated amino acid mixtures, vitamins, and other essential nutrients in optimized concentrations. This chemical reparameterization maintains nutritional adequacy while eliminating pathogen vectors.
Solution Approach 2:
The patent creates a composite nutrient system combining multiple synthetic components (amino acids, vitamins, minerals, carbohydrates, and other growth factors) that collectively provide comprehensive nutritional support for embryo development, replacing the complex but hazardous serum protein mixture.
3Manufacturing precision
If chemically defined media is used instead of serum-based media, then manufacturing precision is improved, but complexity of formulation increases
Solution Approach 1:
The patent segments the nutrient requirements into distinct functional categories (amino acids, vitamins, minerals, carbohydrates, growth factors) and addresses each category separately with specifically selected compounds. This modular approach to formulation makes the complex requirements manageable and enables precise control of each nutrient component.
Data Source
AI summary
This invention discloses a protein-free cell culture medium for assisted reproductive technologies containing 14 kDa methylcellulose.