Magnetic Nanoparticle Spectroscopy for Biomarker Binding Differentiation
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Solution Overview
Problem
Current MSB systems struggle to differentiate between viscosity and temperature changes and NP-NP antibody-specific binding, limiting sensitivity in detecting biomarker concentrations, especially in unprocessed body fluids.
Innovation Solution
The system employs MSB to isolate NP-NP binding by adjusting magnetic field frequencies and amplitudes, using perpendicular field coils and ultrasound to differentiate between viscosity, temperature, and antibody-specific aggregation, allowing for precise measurement of biomarker concentrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If MSB systems measure biomarker concentrations using magnetic nanoparticles, then sensitivity to biomarker detection is improved, but the ability to differentiate between viscosity changes, temperature changes, and NP-NP antibody-specific binding deteriorates
Solution Approach 1:
The patent segments the measurement process into multiple frequency components, analyzing NP response at different excitation frequencies to distinguish between viscosity effects, temperature effects, and specific antibody-NP binding events. This frequency-domain segmentation allows simultaneous measurement of multiple parameters that were previously confounded.
Solution Approach 2:
The patent introduces the frequency dimension as an additional measurement parameter, transforming the system from measuring only amplitude responses to measuring both amplitude and frequency-dependent responses. This dimensional expansion enables differentiation between various physical mechanisms affecting NP behavior.
2Measurement precision
If the system uses multiple measurement parameters to differentiate binding mechanisms, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal measurement platform that can detect multiple types of interactions (viscosity changes, temperature changes, antibody-NP binding) using a single integrated system. The same magnetic field generation and detection apparatus serves multiple measurement functions through software-based analysis of frequency-dependent responses.
Solution Approach 2:
The patent changes the measurement parameters from simple amplitude detection to frequency-dependent amplitude and phase detection. By varying the excitation frequency and analyzing the spectral response, the system extracts multiple pieces of information from the same physical setup without adding proportional hardware complexity.
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
Enables rapid, non-invasive detection and quantification of biomarkers in unprocessed body fluids with high sensitivity, overcoming limitations of prior systems by accurately distinguishing between viscosity, temperature, and antibody-specific binding.
Implementation Method 1
Nanoparticle (NP) magnetic spectroscopy of Brownian motion (or rotation) abbreviated 'MSB' is a technique that allows for sensing of static and dynamic conditions within a body and/or fluid by exciting magnetic nanoparticles
Implementation Method 2
The spectrometer is adapted to scan a sample containing the compound and infused with the NPs and is arranged to apply a magnetic field from at least a drive coil that varies in frequency and amplitude
Implementation Method 3
receiving a signal from a first pickup coil having an axis that is at least one of (a) inline with and (b) perpendicular to a plane of the drive coil
Implementation Method 4
using perpendicular field coils and ultrasound to differentiate between viscosity, temperature, and antibody-specific aggregation
Data Source
AI summary
This invention provides a system and method for use of MSB with respect to nanoparticles to non-invasively so as to detect certain conditions, such as viral infection and immunological responses thereto. The system and method employs MSB, for example to detect and quantify antibody-specific NP aggregation to measure the concentration of molecular biomarkers in a wide variety of environments. The system and method can effectively differentiate antibody-specific aggregation from viscosity and temperature, which vary naturally in many environments we wish to explore. Advantageously, the system and method can provide a wide range of potential applications including, but not limited to, in vivo monitoring of immunotherapy efficacy, surgical site infection surveillance, chronic surgical pain monitoring and testing for contagions, which can be performed rapidly and at minimal cost in the field using (e.g.) unprocessed body fluid samples (blood, saliva, mucus and/or urine).