DHA-Enriched Phospholipid Mixtures for Brain Delivery
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Solution Overview
Problem
Current methods for delivering omega-3 polyunsaturated fatty acids, particularly docosahexaenoic acid (DHA), to the brain are inefficient, as existing supplements result in only a small amount of DHA reaching the brain, and the large-scale preparation of DHA-containing phospholipids and lysophospholipids from aquatic animals is poorly understood and costly.
Innovation Solution
The development of a chemical composition and process for extracting and purifying phospholipid mixtures from saltwater fish, specifically enriching sn-1-acyl and sn-1-ether fatty chains with DHA, which are then used to create high-purity phosphatidylcholine, phosphatidylserine, and phosphatidylethanolamine species, as well as their lysophospholipid counterparts, to serve as effective carriers of DHA across the blood-brain barrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If existing DHA supplements are administered, then DHA can be introduced to the human body, but only a very small amount of DHA reaches the brain
Solution Approach 1:
The patent uses phospholipids as intermediary carriers to transport DHA across the blood-brain barrier. Specifically, DHA is incorporated into phospholipid molecules (such as phosphatidylcholine and phosphatidylethanolamine) which then serve as vehicles to deliver DHA to the brain, overcoming the limitation of direct DHA supplementation.
Solution Approach 2:
The patent changes the chemical form of DHA from free fatty acid to esterified form within phospholipid molecules. This parameter change in molecular structure allows DHA to be recognized and transported by specific brain uptake mechanisms, significantly improving delivery efficiency to the brain.
2Quantity of substance
If phospholipid mixtures are extracted from saltwater fish liver, then DHA-containing phospholipid species can be obtained, but the extraction and purification process is complex and costly
Solution Approach 1:
The patent segments the complex phospholipid mixture into specific molecular species based on their fatty acid composition. Using mass spectrometry and chromatography, the process separates and identifies individual phospholipid species containing DHA at specific positions (sn-1 or sn-2), allowing targeted isolation of the most effective carriers.
Solution Approach 2:
The patent replaces complex mechanical extraction methods with enzymatic reactions. Lipases and other enzymes are used to selectively hydrolyze and release specific phospholipid species from the mixture, simplifying the purification process while maintaining high specificity for DHA-containing compounds.
3Reliability
If DHA is incorporated into phospholipid structures, then the stability and delivery efficiency to the brain is improved, but the manufacturing process becomes more complex
Solution Approach 1:
The patent performs preliminary enzymatic modification of phospholipids to pre-incorporate DHA in optimal positions before final product formulation. By using enzymes to selectively place DHA at sn-1 or sn-2 positions during the extraction process, the stable and effective phospholipid-DHA conjugates are created upfront, simplifying subsequent manufacturing steps.
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 resulting DHA-containing phospholipid species are more stable and efficiently delivered to the brain, offering a potential therapeutic and preventive measure for neurodegenerative diseases associated with DHA deficiency, with the ability to achieve higher DHA levels in the brain compared to existing supplements.
Implementation Method 1
purified to at least 85% purity by chromatography purification
Implementation Method 2
preparation of disclosed mixtures of phosphatidylcholine, phosphatidylserine and phosphatidylethanolamine species as well as lysophosphatidylcholine, lysophosphatidylserine and lysophosphatidylethanolamine species from the phospholipid species mixtures extracted from the liver of saltwater fishes by enzymatic reactions
Implementation Method 3
treating the phosphatidylcholine species mixtures with lipase
Data Source
AI summary
A chemical composition of a molecular species mixture of phospholipids, purified to at least 85% purity through chromatography purification, the chemical composition contains enriched both sn-1-acyl fatty chains/sn-2-docosahexaenoic acid molecular species and sn-1-ether fatty chains/sn-2-docosahexaenoic acid molecular species, the phospholipids are selected from the group consisting of: phosphatidylcholine, phosphatidylserine and phosphatidylethanolamine. Methods using the above disclosed composition in mammals to treat various conditions.