Diamond Magnetometry for Rapid Biomarker Detection
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Solution Overview
Problem
Current methods for detecting biological and chemical targets in biological samples are slow, costly, and require extensive amplification processes, limiting their ability to provide rapid and sensitive diagnostics for diseases such as breast cancer.
Innovation Solution
The use of diamond magnetometry systems employing fluorescent nitrogen-vacancy nanodiamond-probe-reporter conjugates, which detect target materials through changes in magnetic fields associated with nitrogen-vacancy centers, allowing for real-time, sensitive detection without the need for amplification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If PCR-based methods are used to detect nucleotide target materials, then detection sensitivity is improved through amplification, but detection time increases to 2.5-4 hours and requires extensive amplification processes
Solution Approach 1:
The patent extracts and eliminates the amplification step from the detection process by using nanodiamond-based sensors that can detect target molecules directly at single-molecule sensitivity without requiring PCR amplification, thereby reducing detection time from hours to minutes while maintaining high sensitivity
Solution Approach 2:
The patent replaces the mechanical/chemical amplification process (PCR) with a quantum-based detection mechanism using nitrogen-vacancy centers in nanodiamonds, which detect magnetic field changes caused by target molecules, enabling direct detection without amplification
2Measurement precision
If spectrometry-based and antibody-based methods are used to detect specific proteins, then detection accuracy is improved, but equipment complexity increases and portability is reduced
Solution Approach 1:
The patent uses disposable nanodiamond-probe conjugates that can be functionalized with specific binding molecules, eliminating the need for complex, expensive, and non-portable spectrometry equipment while maintaining detection accuracy through single-molecule sensitivity
Solution Approach 2:
The nanodiamond platform serves as a universal detection system that can detect different target molecules (nucleic acids, proteins, small molecules) by simply changing the probe functionalization, replacing multiple specialized instruments with a single versatile platform
3Measurement precision
If amplification processes are used in detection methods like PCR, BEAMing, and ddPCR, then detection sensitivity is improved, but process complexity and cost increase
Solution Approach 1:
The patent extracts and removes the amplification process entirely from the detection workflow, using nanodiamond sensors with single-molecule detection capability that work directly on target molecules without requiring PCR, BEAMing, or ddPCR amplification steps
Solution Approach 2:
The nanodiamond-probe conjugates are designed to self-assemble with target molecules through specific binding interactions, and the nitrogen-vacancy centers automatically detect the bound targets through magnetic field changes, eliminating the need for complex amplification reagents and processes
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 significantly reduces detection time, lowers costs, and achieves sensitivity comparable to or exceeding existing methods, enabling rapid and accurate detection of biomarkers for diseases like breast cancer.
Implementation Method 1
detect target materials through changes in magnetic fields associated with nitrogen-vacancy centers
Implementation Method 2
fluorescent nitrogen-vacancy nanodiamond-probe-reporter conjugates
Data Source
AI summary
A composition includes a fluorescent nitrogen-vacancy nanodiamond conjugated to a probe. The probe specifically binds to a target material when present in a biological sample. A device includes a flow cell containing a plurality of fluorescent nitrogen-vacancy nanodiamonds immobilized on a surface of the flow cell. Each of the plurality of fluorescent nitrogen-vacancy nanodiamonds is conjugated to a probe. A diamond magnetometry system includes an ODMR measurement system, a spin-lattice relaxation time (T1) system, a spin-spin relaxation time (T2) measurement system, and a flow cell.