Magnetic Bead Hydrolysis for Automated Liquid Sample Preparation
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Solution Overview
Problem
Current methods for analyzing liquid samples, such as biological fluids, are hindered by proteins and metabolite complexes, requiring significant time and specific conditions, and are not easily automated, making downstream analysis challenging.
Innovation Solution
A method involving hydrolysis with a hydrolysis enzyme bound to magnetic beads or particles, followed by magnetic bead purification using precipitating reagents and affinity or ion-exchange techniques, to efficiently extract and purify proteins from liquid samples, enabling automated and continuous sample preparation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If typical sample preparation methods are used, then protein extraction can be achieved, but the process requires significant time and specific conditions and is not easily automated
Solution Approach 1:
The patent combines multiple sample preparation steps (protein precipitation, hydrolysis, and purification) into a single integrated magnetic bead-based platform. The magnetic beads simultaneously perform protein precipitation through binding, enable hydrolysis through enzyme conjugation, and facilitate purification through magnetic separation, eliminating the need for separate manual steps and reducing overall preparation time while enabling automation.
Solution Approach 2:
The patent replaces traditional mechanical separation methods (centrifugation, filtration) with magnetic field-based separation. Magnetic beads with surface coatings or conjugated enzymes are separated from the sample using magnetic fields, enabling automated control and reducing the time required compared to manual centrifugation or filtration steps.
2Measurement precision
If proteins are present in liquid samples, then critical analytical information can be obtained, but proteins hinder downstream analysis of small molecules
Solution Approach 1:
The patent extracts and removes proteins from the liquid sample using magnetic beads with protein-binding surface coatings. The magnetic beads selectively bind to proteins, allowing them to be separated from the small molecule analytes through magnetic separation, thereby eliminating protein interference in downstream mass spectrometry analysis.
Solution Approach 2:
The patent uses magnetic beads as an intermediary substance that facilitates protein removal. The magnetic beads serve as a mediator between the sample and the analysis system, binding to proteins and enabling their separation, thus protecting the downstream analysis from protein interference while maintaining small molecule integrity.
3Measurement precision
If target analytes undergo metabolism including glucuronidation, then complex metabolites are formed, but these complexes challenge direct analysis
Solution Approach 1:
The patent performs preliminary hydrolysis of glucuronidated metabolites before mass spectrometry analysis. Enzymes conjugated to magnetic beads catalyze the breakdown of glucuronide conjugates into their parent compounds, simplifying the analytical profile and enabling accurate detection of metabolites that would otherwise appear as complex, difficult-to-analyze conjugates.
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 improves the efficiency and quality of sample hydrolysis, reducing carryover and enabling accurate analysis of small molecules, particularly for clinical applications like drug screening, by producing a high-quality hydrolysate suitable for mass spectrometry analysis.
Implementation Method 1
treating the liquid sample with a hydrolysis enzyme, hydrolyzing the liquid sample to prepare a hydrolysate
Implementation Method 2
magnetically separating the magnetic beads or magnetic particles from the suspension to produce a supernatant
Implementation Method 3
precipitating proteins and any excess hydrolysis enzyme in the hydrolysate with a precipitating reagent
Data Source
AI summary
Methods and kits for preparing liquid samples are presently claimed and described. The method may include treating liquid sample with a hydrolysis enzyme, hydrolyzing the liquid sample to prepare a hydrolysate, and purifying the hydrolysate with magnetic based purification. In certain aspects, the hydrolysis enzyme is bound to a magnetic bead or a magnetic particle. Kits for preparing a liquid sample can include a hydrolysis enzyme, magnetic beads or magnetic particles, one or more internal standards, a liquid chromatography column and one or more solvents to be used as mobile phases, one or more calibrant solutions and instructions for use.