Fluidic Bypass Path for Glycan Analysis
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Solution Overview
Problem
Current methods for glycan analysis in glycoproteins are time-consuming, cumbersome, and prone to errors, requiring large quantities of starting materials and involving lengthy enzymatic reactions, which complicates the process of removing and analyzing glycans from glycoproteins.
Innovation Solution
A device and method that utilize a bypass path in a fluidic sample handling system, allowing for selective isolation of a fluidic sample from a flow-through path to perform solid phase reactions with a chemical reactor, enabling high concentration reactions and adjustable reaction times, thereby improving the efficiency of glycan release and analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional in-solution enzymatic reaction with PNGase F is used for glycan removal, then complete glycan release can be achieved, but the reaction time is extremely long (24 hours) and the process is cumbersome
Solution Approach 1:
The patent replaces the traditional in-solution enzymatic reaction system with a solid-phase reaction system using an enzymatic reactor containing immobilized PNGase F on porous beads. This substitution allows the reaction to occur in a controlled flow-through environment where sample can be continuously passed over the enzyme, dramatically reducing reaction time from 24 hours to minutes while maintaining complete glycan release through sufficient contact time and enzyme availability.
Solution Approach 2:
The patent changes the physical state and concentration parameters of the enzymatic reaction by immobilizing the enzyme on solid support and controlling sample flow rate through the reactor. This allows optimization of reaction conditions where high enzyme concentration is achieved in a compact volume, and reaction time is controlled by flow rate, transforming an uncontrolled 24-hour incubation into a controlled rapid flow-through process.
2Adaptability or versatility
If traditional manual operations are used for glycan analysis, then flexibility in handling different samples is maintained, but the process is error-prone and time-consuming
Solution Approach 1:
The patent merges multiple discrete manual operations (sample application, enzymatic reaction, protein precipitation, glycan separation, and analysis) into a single integrated flow-through system. The enzymatic reactor, separation columns, and detection system are connected in series, allowing automatic continuous processing of samples while maintaining the ability to handle different glycoprotein types through parameter adjustment, thereby eliminating manual errors and increasing throughput.
Solution Approach 2:
The integrated system is designed to perform multiple functions (enzymatic deglycosylation, protein precipitation, glycan separation, and detection) within a single platform that can process various types of glycoprotein samples. This universal design maintains adaptability to different samples while automating all operations to eliminate manual errors and increase productivity.
3Measurement precision
If large quantities of starting materials are used in traditional glycan analysis, then sufficient signal for detection is obtained, but the requirement for large sample amounts limits application to low-abundance glycoproteins
Solution Approach 1:
The patent creates localized high-concentration zones of both enzyme and sample within the flow-through reactor and separation columns. By concentrating the enzymatic reaction in a compact volume with immobilized enzyme and focusing glycans during separation, the system achieves high detection signals from minimal starting material, eliminating the need for large sample quantities while maintaining measurement precision.
4Device complexity
If flow-through path is used continuously without isolation, then system simplicity is maintained, but solid phase reactions cannot achieve high concentration conditions required for efficient glycan release
Solution Approach 1:
The patent introduces dynamic switching capability that allows the system to alternate between flow-through mode (for sample application and system simplicity) and isolated bypass mode (for high-concentration solid-phase reactions). The bypass path with valve control enables the reaction zone to be dynamically isolated from the main flow, creating high local enzyme concentration conditions necessary for efficient glycan release while maintaining overall system simplicity through integrated design.
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 the time required for glycan analysis, enhances reaction efficiency, and allows for the analysis of smaller sample quantities, improving the reproducibility and accuracy of glycan profiles.
Implementation Method 1
performing a solid phase reaction with the fluidic sample
Implementation Method 2
chemical reactor arranged in the bypass path and being configured for performing a solid phase reaction with the fluidic sample
Implementation Method 3
bypass path being switchably connectable to (in an embodiment integrable in) or disconnectable from the flow-through path for selectively enabling or disabling fluid communication
Data Source
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AI summary
A device (30) for handling a fluidic sample, the device (30) comprising a flow-through path (302) configured for conducting the fluidic sample, a bypass path (300) being switchably connectable to or disconnectable from the flow-through path (302) for selectively enabling or disabling fluid communication between the flow-through path (302) and the bypass path (300), and a chemical reactor (230) arranged in the bypass path (300) and being configured for performing a solid phase reaction with the fluidic sample.