Human Platelet Exosome Preparation for Concentration and Size Control
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Solution Overview
Problem
Existing methods for preparing exosomes from human platelets are inefficient and do not allow for precise control over exosome concentration, particle size, and growth factor content, which limits their application in clinical research and wound healing.
Innovation Solution
A method involving the use of calcium ion buffer, phosphate buffered saline, Tris-HCl buffer, and HEPES buffer to treat human platelets, followed by centrifugation, to obtain exosome solutions with controlled concentrations and particle sizes, and potentially enhanced growth factor content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional methods are used to prepare exosomes from human platelets, then the preparation process is simple, but the exosome concentration, particle size, and growth factor content cannot be precisely controlled
Solution Approach 1:
The patent applies parameter changes by systematically varying buffer composition (calcium ion concentration, pH, ionic strength), platelet activation conditions, and centrifugation parameters to precisely control exosome concentration, particle size distribution, and growth factor content. This enables manufacturing precision while maintaining a relatively simple preparation process.
2Reliability
If conventional methods are used to prepare exosomes, then the preparation process is straightforward, but the effectiveness in promoting cell migration and wound healing is limited
Solution Approach 1:
The patent optimizes buffer parameters (calcium ion concentration from 1-10 mM, pH 6.5-8.0, ionic strength) and platelet activation conditions to control exosome characteristics, resulting in enhanced growth factor content and improved effectiveness for cell migration and wound healing applications.
Solution Approach 2:
The patent creates exosomes with optimized compositions that replicate and enhance the natural wound healing process, using controlled buffer conditions to produce exosomes with specific growth factor profiles that mirror ideal therapeutic requirements.
3Manufacturing precision
If buffer treatment is applied to control exosome characteristics, then exosome concentration and particle size can be controlled, but the preparation time and process complexity increase
Solution Approach 1:
The patent uses buffer parameter optimization (calcium ion concentration, pH, composition) to control exosome particle size and concentration during the preparation process, achieving manufacturing precision without requiring multiple sequential steps, thus minimizing preparation time.
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 method produces exosome solutions with varied concentrations, particle sizes, and growth factor levels, enhancing their effectiveness in promoting cell migration and wound healing, as demonstrated by increased cell migration rates and growth factor concentrations.
Implementation Method 1
treating the human platelet with a buffer to obtain a platelet solution
Implementation Method 2
centrifuging the platelet solution, and collecting supernatant of the centrifuged platelet solution
Data Source
AI summary
A method for preparing exosomes is provided. The method includes preparing a human platelet, treating the human platelet with a buffer to obtain a platelet solution, centrifuging the platelet solution, and collecting supernatant of the centrifuged platelet solution to obtain an exosome solution. The buffer is calcium ion buffer, phosphate buffered saline (PBS), tris(hydroxymethyl)aminomethane hydrochloride (Tris-HCl) buffer, or 2-[4-(2-hydroxyethyl)-1-piperazinyl]ethanesulfonic acid (HEPES) buffer.