Saposin Lipoprotein Particles via Support-Bound Self-Assembly
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Solution Overview
Problem
Existing processes for preparing saposin lipoprotein particles are inefficient, resource-intensive, and do not allow for easy immobilization on supports, which is necessary for applications like high-throughput screening and biosensor systems, while maintaining the hydrophobic agent's natural membrane environment.
Innovation Solution
A process where either the saposin-like protein or the hydrophobic agent is selectively bound to a support, allowing self-assembly of saposin lipoprotein particles directly on the support, enabling recycling of unbound components and reducing production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional batch processes are used to prepare saposin lipoprotein particles, then particle formation can be achieved, but the process is inefficient and resource-intensive with no possibility of component recycling
Solution Approach 1:
The support is pre-functionalized with binding moieties (such as Ni-NTA, His-tag, or other affinity ligands) before the assembly reaction. This preliminary preparation enables selective binding of either the saposin-like protein or hydrophobic agent to the support, organizing components in advance for efficient particle assembly and enabling subsequent recycling of the support and unbound components.
Solution Approach 2:
The invention enables recovery and recycling of expensive components. The support with bound saposin-like protein or hydrophobic agent can be separated from unbound components, and the support can be regenerated and reused for multiple particle production cycles, significantly reducing material waste and production costs.
2Ease of manufacture
If free saposin lipoprotein particles are produced in solution, then particle assembly can occur, but immobilization on supports requires additional steps and is complex
Solution Approach 1:
The invention merges the particle assembly process with the immobilization process into a single integrated operation. By pre-binding the saposin-like protein or hydrophobic agent to the support before adding the remaining components, the particles self-assemble directly on the support surface, combining two previously separate steps (assembly followed by immobilization) into one simultaneous process.
Solution Approach 2:
The support acts as an intermediary that facilitates both immobilization and particle assembly. The binding moieties on the support selectively capture either the saposin-like protein or hydrophobic agent, creating a localized assembly platform that directs particle formation on the support surface while enabling easy separation and recycling of the support.
3Adaptability or versatility
If hydrophobic agents are solubilized in aqueous systems, then they can be used in biochemical assays, but their natural membrane environment is compromised
Solution Approach 1:
The invention creates composite saposin lipoprotein particles that combine hydrophobic agents with saposin-like proteins and lipids in a structured assembly. The hydrophobic agent is embedded within the lipoprotein particle, surrounded by lipids that mimic the natural membrane environment, while the outer surface remains aqueous-compatible for use in biochemical assays and high-throughput screening.
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 method enables the production of stable, support-bound saposin lipoprotein particles that maintain the natural membrane environment of hydrophobic agents, facilitating their use in lab-on-a-chip and biosensor applications with improved efficiency and cost-effectiveness.
Implementation Method 1
contacting the saposin-like protein with a support that is capable of selectively binding the saposin-like protein to the support
Implementation Method 2
contacting the support-bound saposin-like protein with the lipids and, optionally, the hydrophobic agent, to allow for the self-assembly of the saposin lipoprotein particle on the support
Data Source
AI summary
The invention relates to a process for preparing saposin lipoprotein particles, comprising a saposin-like protein, lipids and optionally a hydrophobic agent wherein the saposin-like protein or the hydrophobic agent is selectively bound to a support to allow the self-assembly of the saposin lipoprotein particles. The process of the invention comprises the step of a.) providing the hydrophobic agent and lipids, b.1)/b.2 contacting the hydrophobic agent or the saposin-like protein with a support that is capable of selectively binding either of the two molecules to the support, c.1)/c.2) contacting the support-bound particle components with the remaining particle components, either the saposin-like protein or the hydrophobic agent, to allow for the self-assembly of the saposin lipoprotein particle on the support and d.) optionally eluting the support-bound saposin lipoprotein particles.