Novel Fucosyltransferases for Scalable HMO Production
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Solution Overview
Problem
Current methods for producing fucosylated human milk oligosaccharides (HMOs) face challenges due to variations in glycosyltransferases regarding kinetics, substrate specificity, affinity, stability, and solubility, limiting the production of complex fucosylated oligosaccharides like tetrasaccharides, pentasaccharides, and hexasaccharides to small scales.
Innovation Solution
Identification and utilization of novel fucosyltransferases capable of transferring a fucose residue from a donor substrate to lactotetraose, enabling the synthesis of fucosylated oligosaccharides such as lactofucopentaose, which are genetically engineered into bacterial cells to enhance production efficiency and yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional glycosyltransferases are used for producing fucosylated oligosaccharides, then production can be achieved, but the production scale is limited to small scales due to variations in kinetics, substrate specificity, affinity, stability, and solubility
Solution Approach 1:
The patent applies parameter changes by identifying and utilizing novel fucosyltransferases with improved kinetic parameters, substrate specificity, and stability characteristics. The invention changes the enzymatic parameters through selective identification of optimal enzymes (such as FucT2 from Helicobacter pylori and WbgL from Escherichia coli O126) that exhibit superior performance in terms of catalytic efficiency, substrate affinity, and operational stability, thereby enabling scalable production of fucosylated oligosaccharides
2Quantity of substance
If existing fucosyltransferases are used, then fucosylation reactions can proceed, but complex fucosylated oligosaccharides like tetrasaccharides, pentasaccharides, and hexasaccharides can only be produced at small scales
Solution Approach 1:
The patent implements self-service by utilizing the inherent catalytic capabilities of identified fucosyltransferases to automatically perform the fucosylation reactions without requiring complex external intervention. The enzymes naturally catalyze the transfer of fucose residues to oligosaccharide substrates, enabling self-sustaining production systems that can be scaled up by simply optimizing reaction conditions and enzyme concentration rather than requiring complex manufacturing infrastructure
3Productivity
If novel fucosyltransferases are utilized to improve kinetics and specificity, then commercially viable amounts of complex fucosylated oligosaccharides can be produced, but this requires identification and genetic engineering of new enzyme sources
Solution Approach 1:
The patent applies preliminary action by pre-identifying and characterizing suitable fucosyltransferases from various bacterial sources before scaling up production. The invention performs advance work in screening, isolating, and optimizing enzyme candidates (such as those from Bacteroides fragilis, Bacteroides ovatus, and other species), preparing standardized enzyme preparations and established protocols that can be directly applied to commercial production without requiring repeated R&D cycles
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 novel fucosyltransferases facilitate the production of commercially viable amounts of complex fucosylated oligosaccharides, such as lacto-N-fucopentaose, by improving kinetics and specificity, thereby overcoming the limitations of existing technologies.
Implementation Method 1
a fucosyltransferase which is capable of transferring a fucose residue from a donor substrate to an acceptor molecule
Data Source
AI summary
Fucosyltransferases capable of transferring a fucose residue from a donor substrate to a lactotetraose, methods for producing fucosylated oligosaccharides utilizing the fucosyltransferases, and the use of the thus produced fucosylated oligosaccharides for manufacturing nutritional compositions are provided.