Lipid Vesicles Encapsulating Mitochondria via Microflow Mixing
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Solution Overview
Problem
Current methods for introducing mitochondria into cells to address mitochondrial dysfunction and aging are inefficient, as they lack confirmation of physiological actions and often result in toxicity, and existing technologies for forming liposomes are not suitable for encapsulating mitochondria effectively.
Innovation Solution
The development of lipid membrane-based vesicles encapsulating mitochondria, produced using a micro flow channel device, which allows for the formation of vesicles with a controlled particle size and distribution, enabling the encapsulation and delivery of mitochondria into cells, where they can fuse with endogenous mitochondria, improving respiratory activity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If mitochondria are mixed with lipofectamine 2000 reagent to form lipoplexes, then mitochondria can be introduced into cells, but physiological actions of the introduced lipoplexes have not been confirmed and toxicity issues arise
Solution Approach 1:
The patent uses lipid membrane-based vesicles as an intermediary carrier to deliver mitochondria into cells. These vesicles are formed by mixing an aqueous solution containing isolated mitochondria with an ethanol solution containing lipids that can form lipid membranes, creating a safe and effective delivery system that avoids the toxicity of lipofectamine while confirming physiological actions
Solution Approach 2:
The patent changes the physical and chemical parameters of the delivery system by using lipid membrane-based vesicles with controlled particle sizes (peak at less than 1 μm, preferably less than 500 nm) and low polydispersity (PDI less than 0.5). This parameter optimization ensures both ease of cellular uptake and reliability of physiological function
2Ease of manufacture
If conventional liposome formation technology is used, then vesicles can be formed, but they are not suitable for encapsulating mitochondria effectively
Solution Approach 1:
The patent optimizes the formation parameters by controlling the mixing ratio of aqueous and ethanol solutions, the concentration of lipids, and the flow rates in the micro flow channel device. This results in vesicles with precise particle size distribution (peak at less than 1 μm) and high encapsulation efficiency, making them suitable for mitochondria delivery
Solution Approach 2:
The patent replaces conventional mechanical mixing methods with a micro flow channel device that uses controlled fluid flow to mix the aqueous and ethanol solutions. This substitution provides precise control over mixing conditions and ensures uniform vesicle formation with consistent particle sizes and high encapsulation effectiveness
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 encapsulated mitochondria can be effectively delivered into cells, enhancing respiratory activity and mitochondrial function, as demonstrated by improved oxygen consumption rates and mitochondrial membrane potential, while avoiding toxicity issues associated with previous methods.
Implementation Method 1
bringing an aqueous solution comprising isolated mitochondria with an ethanol solution comprising a lipid that can form lipid membrane into contact with each other in a confluent channel within a micro flow channel device to mix the solutions
Implementation Method 2
an ethanol solution comprising a lipid that can form lipid membrane into contact with each other... to form lipid membrane-based vesicles encapsulating mitochondria
Implementation Method 3
the population of lipid membrane-based vesicles has a particle size distribution, as determined by dynamic light scattering, having a peak at less than 1 μm
Data Source
AI summary
According to the present invention, there is provided a composition comprising a population of mitochondria with a smaller size and a population of lipid membrane-based vesicles encapsulating mitochondria in a closed space and a method for producing the composition.