Superparamagnetic Iron Particles for Pathogen Extraction
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Solution Overview
Problem
Current methods for purifying contaminated solutions, such as those containing pathogens and their components, are inefficient due to low pathogen concentrations and the specificity and cost of existing filtration systems, which delays diagnosis and treatment, especially in cases of sepsis.
Innovation Solution
The use of superparamagnetic iron-based particles linked to target binding peptides that can magnetically attract and immobilize pathogens and pathogen components like LPS and bacteria in aqueous or body fluid samples, reducing their concentration and enabling faster identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antibody-based filtration systems are used to remove pathogens, then pathogen removal effectiveness is improved, but system cost and specificity limitations worsen
Solution Approach 1:
The patent replaces expensive antibody-based systems with inexpensive magnetic particles that can be discarded after single use. The particles are designed to be cheap enough that their cost is negligible compared to the diagnostic value of concentrating the pathogens they capture, eliminating the need for expensive reusable antibody columns
Solution Approach 2:
The patent introduces magnetic particles as an intermediary carrier that binds to pathogens and enables their concentration and separation. This intermediary approach allows pathogen capture without requiring expensive antibody-based filtration systems, as the magnetic particles serve as a reusable platform that can be functionalized with various binding agents
2Measurement precision
If pathogen concentration in blood is very low, then diagnosis accuracy is improved, but identification time worsens due to need for amplification
Solution Approach 1:
The patent performs preliminary concentration of pathogens from blood samples using magnetic particles before diagnostic analysis. By pre-concentrating the pathogens to detectable levels, the system eliminates the need for time-consuming in vitro amplification steps while maintaining the ability to accurately identify the pathogen causing sepsis
Solution Approach 2:
The patent replaces biological amplification systems (which require incubation time) with a mechanical magnetic separation system. The magnetic particles physically concentrate pathogens through magnetic field manipulation, providing rapid concentration without the time delays inherent in biological culture or amplification methods
3Reliability
If broad-spectrum antibiotics are administered, then treatment coverage is improved, but antibiotic resistance development worsens
Solution Approach 1:
The patent implements a feedback mechanism by rapidly identifying the specific pathogen causing sepsis through magnetic concentration followed by precise diagnostic methods. This feedback loop enables clinicians to transition from empirical broad-spectrum antibiotic therapy to targeted pathogen-specific treatment, thereby reducing the selective pressure that drives antibiotic resistance while maintaining effective treatment coverage
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 approach effectively reduces pathogen and pathogen component concentrations by up to 99.95% in aqueous solutions and human blood, facilitating quicker identification and potential treatment by concentrating pathogens while maintaining their viability for analysis.
Implementation Method 1
providing magnetically attractable, i.e. superparamagnetic iron-based particles
Implementation Method 2
linked to a target binding peptide, wherein the target is a pathogen or a pathogen component
Data Source
AI summary
Immobilization and magnetic extraction of pathogens and pathogen components The application describes a method for reducing the concentration of pathogens and/or pathogen components in an aqueous or body fluid sample. Specifically, the method relates to incubating the sample with superparamagnetic iron-based particles attached to a target binding peptide and immobilising the superparamagnetic iron-based particles with a magnetic field and thereby separating the pathogen-bound and/or pathogen component-bound superparamagnetic iron-based particles from the sample. Furthermore, the application relates to a method for identifying pathogens in an aqueous or body fluid sample a use of superparamagnetic iron-based particles for reducing the concentration of pathogens and/or pathogen components in an aqueous or body fluid sample. In addition, a use of superparamagnetic iron-based particles for identifying pathogens in an aqueous or body fluid sample is disclosed. Finally, superparamagnetic ironoxide nanoparticles (SPION's) are disclosed, wherein the SPIONs are linked to a target binding peptide. wherein the target is a pathogen, and/or a pathogen component.