Metabolically Engineered Microorganisms for Resveratrol Production

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Solution Overview

Problem

Current methods for producing resveratrol, a compound with potential health benefits, are inefficient and labor-intensive, relying on extraction from grape skins or knotweed, which results in low yields and high costs.

Innovation Solution

Development of genetically engineered microorganisms, such as yeast and bacteria, capable of producing resveratrol directly from glucose through the phenylpropanoid pathway by expressing specific enzymes like phenylalanine ammonia lyase, cinnamate 4-hydroxylase, and resveratrol synthase, bypassing the need for external substrates like 4-coumaric acid.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If resveratrol is produced by extraction from grape skins or knotweed, then the production method is simple, but the yield is low and labor-intensive

Engineering Contradiction:

Improveproduction method simplicityVSAvoidresveratrol yield

Core Design Contradiction:

Ease of manufactureVSProductivity

Solution Approach 1:

The microorganism is engineered to produce resveratrol autonomously through endogenous metabolic pathways. By introducing and optimizing key enzymes (PAL, 4CL, VST) and precursors (4-coumaric acid, malonyl-CoA), the system enables cells to synthesize resveratrol de novo from simple carbon sources, eliminating the need for labor-intensive extraction from plant materials while achieving high-yield production

Inventive Principle:

Principle #25Self-service

2Adaptability or versatility

If resveratrol is produced by extraction from plant materials, then no genetic engineering is required, but the production cost is high and efficiency is low

Engineering Contradiction:

Improveproduction method flexibilityVSAvoidproduction efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The invention optimizes multiple parameters within the microorganism's metabolic system to enable efficient resveratrol production. This includes overexpressing key structural genes (PAL, 4CL, VST), adjusting precursor availability (4-coumaric acid, malonyl-CoA), and optimizing cultural conditions to maximize yield. These parameter changes transform the microorganism into a high-efficiency production platform that surpasses traditional plant extraction methods

Inventive Principle:

Principle #35Parameter changes

3Stability of the object's composition

If the phenylpropanoid pathway is used for resveratrol synthesis, then the pathway provides natural precursor supply, but additional enzyme overexpression is required to achieve high yield

Engineering Contradiction:

Improvemetabolic pathway stabilityVSAvoidenzyme expression system complexity

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The invention merges multiple functional components into a coordinated expression system. Key enzymes (PAL, 4CL, VST) are co-expressed from heterologous genes, and their expression is synchronized with precursor supply pathways. This integration creates a streamlined metabolic route where enzyme activities are balanced and coordinated, achieving high resveratrol yield while maintaining system stability

Inventive Principle:

Principle #5Merging (Combining)

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 enables high-yield production of resveratrol in microorganisms, potentially reducing production costs and increasing efficiency, making it more viable for commercial applications as a nutraceutical or pharmaceutical.

Implementation Method 1

The amino acid L-phenylalanine is converted into trans-cinnamic acid through the non-oxidative deamination by L-phenylalanine ammonia lyase (PAL)

Methodology Applied

Scientific EffectEnzymatic deamination: Enzyme

Implementation Method 2

trans-cinnamic acid is hydroxylated at the para-position to 4-coumaric acid (4-hydroxycinnamic acid) by cinnamate-4-hydroxylase (C4H), a cytochrome P450 monooxygenase enzyme

Methodology Applied

Scientific EffectHydroxylation: Oxidation

Implementation Method 3

The 4-coumaric acid, is subsequently activated to 4-coumaroyl-CoA by the action of 4-coumarate-CoA ligase (4CL)

Methodology Applied

Scientific EffectLigase reaction: Chemical Bonding

Implementation Method 4

resveratrol synthase (VST) catalyses the condensation of a phenylpropane unit of 4-coumaroyl-CoA with malonyl CoA, resulting in formation of resveratrol

Methodology Applied

Scientific EffectCondensation: Condensation

Data Source

PatentUS9040269B2Metabolically engineered cells for the production of resveratrol or an oligomeric or glycosidically-bound derivative thereof

Publication Date: 2015.05.26 DANSTAR FERMENT AG

AI summary

A recombinant micro-organism producing resveratrol by a pathway in which phenylalanine ammonia lyase (PAL) produces trans-cinnamic acid from phenylalanine, cinnamate 4-hydroxylase (C4H) produces 4-coumaric acid from said trans-cinnamic acid, 4-coumarate-CoA ligase (4CL) produces 4-coumaroyl CoA from said 4-coumaric acid, and resveratrol synthase (VST) produces said resveratrol from said 4-coumaroyl CoA, or in which L-phenylalanine- or tyrosine-ammonia lyase (PAL/TAL) produces 4-coumaric acid, 4-coumarate-CoA ligase (4CL) produces 4-coumaroyl CoA from said 4-coumaric acid, and resveratrol synthase (VST) produces said resveratrol from said 4-coumaroyl CoA. The micro-organism may be a yeast, fungus or bacterium including Saccharomyces cerevisiae, E. coli, Lactococcus lactis, Aspergillus niger, or Aspergillus oryzae.