A bio-inspired cell-free system for cannabinoid production from inexpensive inputs

Area of Science:

• Biotechnology
• Synthetic Biology
• Biochemistry

Background:

• Cannabinoid production traditionally relies on plant extraction, which faces challenges in consistency and purity.
• Engineered microbes offer an alternative but present their own production hurdles.
• Enzymatic biosynthesis presents a cell-free approach to overcome limitations of both plant and microbial production systems.

Purpose of the Study:

• To design and implement a novel cell-free enzymatic system for efficient cannabinoid production.
• To develop a system utilizing low-cost inputs and a minimal set of enzymes.
• To create an oxygen-independent system with reduced ATP requirements for broader applicability.

Main Methods:

• Development of a cell-free enzymatic biosynthesis pathway for cannabinoids.
• Utilization of only 12 enzymes and low-cost starting materials.
• Incorporation of a nonnatural enzyme system to minimize ATP consumption.
• Optimization for malonyl-CoA-dependent pathways, including polyketide biosynthesis.

Main Results:

• Achieved approximately 0.5 g/L of either cannabigerolic acid (CBGA) or cannabigerovarinic acid (CBGVA).
• Demonstrated yields nearly two orders of magnitude higher than previously reported yeast-based production.
• Successfully employed low-cost inputs and an oxygen-independent system.
• Validated the general applicability of the nonnatural enzyme system to similar biosynthetic pathways.

Conclusions:

• The developed cell-free system offers a significant advancement in cannabinoid production technology.
• This approach provides a more reliable, purer, and potentially cheaper source of therapeutic cannabinoids.
• Cell-free enzymatic biosynthesis represents a promising new route for sustainable and scalable cannabinoid manufacturing.