Molecular Probe Functionalized Element with Peptide Linker System
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Solution Overview
Problem
Molecular probes on biosensor surfaces often experience non-specific binding and loss of functionality when detecting complex analytes like proteins and nucleic acids in body fluids, leading to reduced sensitivity and signal-to-noise ratio.
Innovation Solution
A molecular probe functionalized element is created with a solid base element, a peptide compound layer, and a linker system that covalently binds the probe, reducing non-specific binding and maintaining probe activity, using a process involving linker A and B for stable attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If molecular probe is immobilized on solid support surface, then probe stability is improved, but non-specific binding increases and probe functionality is lost
Solution Approach 1:
The patent introduces a multi-layer intermediary structure consisting of linker A, peptide compound, and linker B that mediates between the solid support surface and the molecular probe. This intermediary layer reduces non-specific binding while maintaining probe stability and functionality through controlled covalent interactions at each interface.
Solution Approach 2:
The patent segments the immobilization process into distinct functional layers: linker A layer for surface attachment, peptide compound layer for reducing non-specific binding, and linker B layer for probe attachment. This segmentation allows each layer to perform its specific function independently, optimizing overall performance.
2Reliability
If molecular probe is immobilized on solid support surface, then probe stability is improved, but probe functionality decreases
Solution Approach 1:
The peptide compound acts as a protective intermediary that preserves probe functionality while enabling stable immobilization. The multi-layer structure provides controlled attachment conditions that maintain the native state of the molecular probe, preventing denaturation or loss of binding capacity.
Solution Approach 2:
The patent optimizes chemical parameters at each interface (linker A to surface, peptide to linker A, linker B to peptide) to achieve optimal probe functionality. By controlling reaction conditions and chemical properties at each stage, the probe maintains its native structure and binding capacity while being stably immobilized.
3Measurement precision
If molecular probe is immobilized on solid support surface, then detection capability is improved, but signal-to-noise ratio decreases
Solution Approach 1:
The peptide compound layer serves as a noise-reducing intermediary that minimizes non-specific binding events. By providing a biocompatible surface that reduces spurious interactions, the signal-to-noise ratio is improved while maintaining high detection capability for target analytes.
4Quantity of substance
If molecular probe is immobilized on solid support surface, then analyte binding capacity is improved, but probe detachment resistance decreases
Solution Approach 1:
The patent creates a segmented attachment structure where the probe is bound to the peptide layer through linker B, which is in turn bound to the surface through linker A. This segmentation distributes mechanical stress and chemical interactions across multiple interfaces, enhancing overall attachment stability while maintaining binding capacity.
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
The solution provides a stable and functional surface with reduced non-specific binding, enhancing target analyte binding capacity and signal-to-noise ratio, particularly effective for detecting biomarkers in complex fluids.
Implementation Method 1
the peptide compound is covalently bound to the base element via linker A and the molecular probe is covalently bound to the peptide compound via linker B
Data Source
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AI summary
The present invention provides a molecular probe functionalized element comprising a solid base element, a first layer comprising a linker A, a second layer comprising a peptide compound, a third layer comprising a linker B, and a fourth layer comprising a molecular probe, wherein the peptide compound is covalently bound to the solid base element via linker A and the molecular probe is covalently bound to the peptide compound via linker B. The present invention also provides a process for preparing the molecular probe functionalized element and a device comprising the molecular probe functionalized element such as an optical biosensor. Further, the present invention provides a method for detecting a biomarker comprising a) bringing into contact the molecular probe functionalized element with a sample suspected to comprise a target analyte; b) detecting the biomarker based on an interaction between the molecular probe and the target analyte. The present invention also provides a use of the molecular probe functionalized element or of the device for one or more of: a companion diagnostic test; diagnosing Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, Diabetes, Huntington, Prion disease, or a tumor in a patient; monitoring of therapy of patients with Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, Diabetes, Huntington, Prion disease, or a tumor; and screening of drugs for the treatment of Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, Diabetes, Huntington, Prion disease, or a tumor.