Engineered CBDAS Variants for High-Yield Microbial Cannabinoid Production
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Solution Overview
Problem
Existing methods for producing pure cannabinoids from plants are cumbersome, costly, and yield insufficient, while chemically synthesizing these compounds is challenging due to the difficulty of expressing plant enzymes in microbes, particularly secreted enzymes like cannabinoid synthases, which must traverse the microbe's secretory pathway to fold and function properly.
Innovation Solution
Engineering variants of cannabidiolic acid synthase (CBDAS) polypeptides with specific amino acid substitutions, such as SEQ ID NO:3, to enhance expression and production of cannabinoids in modified host cells, including yeast, thereby improving yield and purity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If plant enzymes are expressed in microbes to produce cannabinoids, then production cost and purity are improved, but the difficulty of expressing secreted enzymes in the microbe's secretory pathway increases
Solution Approach 1:
The patent applies parameter changes by modifying amino acid sequences of cannabinoid synthase enzymes to optimize their expression in microbial hosts. Specific substitutions (e.g., replacing plant-specific amino acids with microbial-compatible residues) alter the enzymatic parameters to enable proper folding and function within the microbial secretory pathway, thereby resolving the expression difficulty while maintaining production efficiency and purity
2Productivity
If traditional plant extraction methods are used to obtain cannabinoids, then the process is simple, but the yield is insufficient and the cost is high
Solution Approach 1:
The patent replaces the mechanical extraction process from plants with a biological production system using engineered microbes. By substituting plant-based extraction with microbial fermentation expressing cannabinoid synthases, the system achieves higher yields and reduced costs while maintaining process feasibility through standardized fermentation protocols
3Manufacturing precision
If chemical synthesis methods are used to produce cannabinoids, then pure samples can be obtained, but the process is cumbersome and costly with insufficient yield
Solution Approach 1:
The patent introduces microbial cells as intermediary factories that biosynthesize cannabinoids through expressed plant enzymes. These engineered microbes serve as living reactors that convert simple substrates into pure cannabinoid products, eliminating the need for complex chemical synthesis steps while achieving both high purity and scalable production
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The engineered CBDAS variants significantly increase the production of cannabinoids like cannabidiolic acid (CBDA) from cannabigerolic acid (CBGA), achieving yields up to 1000% greater than native sequences, with improved ratios of CBDA over THCA and CBCA, addressing the challenges of low yields and impurities in traditional methods.
Implementation Method 1
engineered variants of a cannabidiolic acid synthase (CBDAS) polypeptide... produce cannabinoids or cannabinoid derivatives... The engineered variants of the disclosure may be useful for producing cannabinoids or cannabinoid derivatives
Data Source
AI summary
The present disclosure provides engineered variants of a cannabidiolic acid synthase (CBDAS) polypeptide comprising an amino acid sequence of SEQ ID NO:3 with one or more amino acid substitutions, nucleic acids comprising nucleotide sequences encoding said engineered variants, methods of making modified host cells comprising said nucleic acids, modified host cells expressing said engineered variants, methods of producing cannabinoids or cannabinoid derivatives, and methods of screening engineered variants of the cannabidiolic acid synthase (CBDAS) polypeptide.