Photoluminescent Carbon Nanotube Sensor for Real-Time Analyte Detection
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Solution Overview
Problem
Current analytical technologies for determining protein titer and glycosylation patterns in recombinant protein production are costly, time-consuming, and incompatible with on-line process use, limiting their ability to monitor process parameters effectively.
Innovation Solution
A sensor system comprising a hydrogel with embedded photoluminescent nanostructures and analyte-binding compounds, which changes photoluminescent properties upon analyte binding, allowing for real-time detection of analytes without the need for fluorescent labeling or glycan liberation steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current analytical technologies (ELISA, tandem LC/MS) are used to determine titer and glycosylation, then detailed information can be obtained, but the process is costly in terms of time, reagents, and multiplexing capabilities
Solution Approach 1:
The patent replaces complex mechanical/chemical analytical systems (ELISA, LC/MS) with an optical detection system based on photoluminescent carbon nanotubes. The sensor uses optical properties (photoluminescence quenching) to detect analytes, substituting time-consuming mechanical separation and chemical reaction steps with rapid optical measurement, achieving both detailed information and speed.
Solution Approach 2:
The patent changes the detection parameter from complex multi-step chemical/physical analysis to a single optical parameter measurement (photoluminescence intensity). By monitoring changes in photoluminescence signal in response to analyte binding, the system achieves rapid quantification without the time-consuming steps of traditional methods.
2Measurement precision
If current analytical technologies (ELISA, tandem LC/MS) are used to determine titer and glycosylation, then detailed information can be obtained, but reagent costs increase
Solution Approach 1:
The patent replaces reagent-intensive chemical assays with an optical sensing system that requires minimal consumables. The photoluminescent carbon nanotube sensor enables detection through optical measurement alone, eliminating the need for extensive reagents used in ELISA and LC/MS while maintaining measurement precision.
Solution Approach 2:
The sensor platform uses inexpensive, easily replaceable components including the hydrogel matrix and carbon nanotube functionalizations. The system prioritizes low-cost, simple materials over expensive, complex reagent systems, achieving detailed analysis with minimal reagent investment.
3Measurement precision
If current analytical technologies (ELISA, tandem LC/MS) are used, then detailed information can be obtained, but multiplexing capabilities are limited
Solution Approach 1:
The patent creates a universal sensor platform where the same photoluminescent carbon nanotube-based system can detect multiple different analytes (proteins, glycans, metabolites) by simply changing the functionalization layer. This single platform performs multiple analytical functions that traditionally required separate ELISA or LC/MS assays, enabling high multiplexing capability while maintaining detailed information acquisition.
Solution Approach 2:
The patent adds the dimension of spectral multiplexing by utilizing different photoluminescence wavelengths from carbon nanotubes with varying diameters. This allows simultaneous detection of multiple analytes at different wavelengths, dramatically expanding multiplexing capabilities beyond the single-channel limitation of traditional methods.
4Measurement precision
If current analytical technologies (ELISA, tandem LC/MS) are used, then detailed information can be obtained, but on-line process use is incompatible
Solution Approach 1:
The patent replaces complex mechanical sample preparation and multi-step analytical procedures with a simple optical measurement system. The sensor can be directly immersed in process streams or samples, and detection requires only optical excitation and measurement, enabling straightforward on-line integration without the operational complexity of ELISA or LC/MS systems.
Solution Approach 2:
The sensor is pre-functionalized with specific binding moieties (lectins, antibodies, aptamers) during manufacturing, so that during on-line use, no additional sample preparation or reagent addition is needed. The pre-prepared sensor can be directly deployed for real-time monitoring, making on-line process use practical and operationally simple.
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, sensitive, and highly multiplexed analytics of proteins and glycans, reducing costs and improving process monitoring capabilities, making it suitable for on-line use in biomanufacturing.
Implementation Method 1
a photoluminescent nanostructure embedded in the sensor hydrogel
Data Source
AI summary
A sensor for detecting an analyte can include a photoluminescent nanostructure embedded in a sensor hydrogel. The sensor hydrogel can be supported by a substrate hydrogel.