Chimeric Prenyltransferases for Cannabinoid Biosynthesis
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Solution Overview
Problem
Current methods for producing cannabinoids, such as traditional plant cultivation and chemical synthesis, are inefficient and costly, with high energy consumption and limited production of rare cannabinoids, and raise environmental concerns.
Innovation Solution
Genetically modified host cells are used to produce cannabinoids and cannabinoid precursors from fatty acid substrates via heterologous expression of chimeric prenyltransferases, which combine portions of different prenyltransferases to enhance production of CBG-type cannabinoids like cannabigerolic acid and cannabigerovarinic acid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional plant cultivation is used to produce cannabinoids, then cannabinoids can be obtained from natural sources, but energy consumption is high and production efficiency is low
Solution Approach 1:
The patent replaces mechanical/biological plant cultivation systems with a chemical/biochemical synthesis system using engineered yeast cells. The yeast expresses heterologous cannabinoid biosynthetic pathway enzymes (CBDS, THCAS, CBCAS, PT, OLS) that convert plant-derived precursors (olivetolic acid, divaric acid, geranyl pyrophosphate) into cannabinoids, substituting agricultural processes with controlled biocatalysis.
Solution Approach 2:
The patent changes the production parameters by controlling yeast cell metabolism, enzyme expression levels, and substrate concentrations in a bioreactor setting. This allows optimization of cannabinoid yield and composition without the environmental variables (lighting, temperature, humidity) that control plant growth and consume significant energy.
2Productivity
If chemical synthesis is used to produce cannabinoids, then production can be controlled, but yields are low and costs are high
Solution Approach 1:
The engineered yeast cells perform self-catalysis of the cannabinoid biosynthetic pathway. The cells express all necessary enzymes (CBDS for CBD production, THCAS for THC production, CBCAS for CBC production, PT for CBG production, OLS for precursor synthesis) and automatically convert substrates to products through their metabolic machinery, eliminating the need for multiple separate chemical synthesis steps.
Solution Approach 2:
The yeast platform serves multiple functions: it produces diverse cannabinoid types (CBD, THC, CBC, CBG) and their precursors simultaneously through expression of different enzyme variants. The same cellular machinery can be redirected to produce different cannabinoids by changing which pathway genes are expressed, providing a universal platform for cannabinoid manufacturing.
3Stability of the object's composition
If Cannabis plants are grown in controlled environments to ensure consistent results, then product consistency is improved, but energy usage increases significantly
Solution Approach 1:
The patent replaces the plant physiological system that requires controlled environmental parameters (lighting cycles, temperature control, humidity regulation) with a microbial fermentation system. The yeast metabolism and enzyme-catalyzed reactions are less sensitive to environmental variations, allowing consistent cannabinoid production with reduced energy input for environmental control.
4Quantity of substance
If rare cannabinoids are produced through plant cultivation, then diverse cannabinoid profiles can be obtained, but production quantities are very low
Solution Approach 1:
The patent supplies pre-synthesized precursors (olivetolic acid, divaric acid, geranyl pyrophosphate) to the yeast cells before initiating cannabinoid biosynthesis. These precursors are produced through separate optimized pathways or purchased, allowing the yeast to focus its metabolic resources on efficient conversion to final cannabinoid products rather than de novo synthesis of all intermediates.
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
This approach increases the yield and efficiency of cannabinoid production, reducing energy consumption and environmental impact while enabling the production of a broader range of cannabinoids.
Implementation Method 1
chimeric prenymltransferases (PTs)... capable of producing a CBG-type cannabinoid from a resorcylic acid
Data Source
AI summary
Aspects of the disclosure relate to biosynthesis of cannabinoids and cannabinoid precursors in recombinant cells and in vitro. Specifically, the disclosure is directed to a prenyltransferase variant, a chimeric prenyltransferase comprising one or more portions of at least two different prenyltransferase proteins, and a fusion polypeptide comprising a CBG-type producing prenyltransferase and farnesyl pyrophosphate synthase.