Ortho-hydroxy-benzaldehyde Fluorescent Probe for Tyrosine Kinase Detection
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Solution Overview
Problem
Conventional fluorescent probes for detecting tyrosine kinase enzymes are complex in structure, difficult to synthesize, and have issues with stability and interference in cellular environments, limiting their effectiveness in directly detecting kinase activity and overexpression.
Innovation Solution
A fluorescent probe with an ortho-hydroxy-benzaldehyde structure that breaks an intramolecular hydrogen bond upon binding to tyrosine kinase enzymes, emitting fluorescence and allowing for selective detection and imaging of cancer cells or tissues overexpressing these enzymes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional fluorescent probes with peptide chains and complex fluorophores are used to detect tyrosine kinase, then detection sensitivity can be achieved, but the probe structure becomes very complicated and difficult to synthesize
Solution Approach 1:
The probe is divided into two separate components: a simple fluorophore (compound 1) and a peptide substrate. The fluorophore itself is structurally simple and easy to synthesize, while the peptide substrate contains the recognition sequence for tyrosine kinase. This segmentation allows the fluorophore to maintain high detection sensitivity through its optical properties while the peptide provides specific recognition, thereby reducing the structural complexity of the fluorophore component.
Solution Approach 2:
The invention extracts and separates the detection function (fluorophore) from the recognition function (peptide substrate). The fluorophore is designed as a standalone simple compound that can be synthesized easily, while the peptide substrate is a separate component that provides kinase-specific recognition. This extraction of functions allows optimization of each component independently, reducing overall probe complexity while maintaining detection sensitivity.
2Measurement precision
If conventional fluorescent probes with complicated structures are used, then they can detect kinase activity, but their stability and interference resistance in cellular environments deteriorates
Solution Approach 1:
By segmenting the probe into a simple fluorophore and a peptide substrate, the invention improves reliability in cellular environments. The simple fluorophore structure (compound 1) lacks complex functional groups that could interact adversely with cellular components, enhancing its chemical stability. The peptide substrate provides specific kinase recognition while being a natural biomolecule that is biocompatible. This segmentation reduces non-specific interactions and improves probe reliability in complex cellular environments.
Solution Approach 2:
The invention uses a simple, small-molecule fluorophore that is chemically stable and resistant to degradation in cellular environments. This simple structure acts as a robust, disposable detection element that does not require complex protective groups or stabilizing moieties, thereby maintaining high stability and resistance to cellular interference throughout the detection process.
3Measurement precision
If indirect methods detecting compounds associated with phosphorylation process are used, then kinase presence can be measured, but the analytic process becomes complicated and not directly detecting kinase enzyme
Solution Approach 1:
The invention merges the detection function and the direct kinase recognition function into a single probe system. The fluorophore (compound 1) is combined with a peptide substrate that contains the recognition sequence for tyrosine kinase active site. When the kinase binds to the peptide substrate, it directly causes a fluorescence signal change from the fluorophore, enabling direct detection of kinase enzyme presence and activity in a single step without requiring separate detection steps for phosphorylated compounds.
4Illumination intensity
If fluorescent probes with complicated fluorophore structures are used, then fluorescence signal can be obtained, but the synthesis process becomes complicated and time-consuming
Solution Approach 1:
The probe is segmented into a simple fluorophore (compound 1) and a peptide substrate. The fluorophore itself has a simple molecular structure with few atoms and standard functional groups, making it trivial to synthesize using conventional organic synthesis methods. The fluorescence signal intensity is maintained through optimal molecular design of this simple structure, while the synthesis complexity is dramatically reduced compared to conventional complex fluorophores. The peptide substrate can be obtained through standard peptide synthesis techniques.
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 probe exhibits high sensitivity, stability, and low cytotoxicity, enabling effective detection and imaging of tyrosine kinase activity and overexpression, particularly in cancer cells, with two-photon excitation providing high resolution and minimal interference from tissues.
Implementation Method 1
the compound may exhibit fluorescence by breaking an intramolecular hydrogen bond in the ortho-hydroxy-benzaldehyde structure when the compound binds to a tyrosine kinase
Implementation Method 2
emitting fluorescence and allowing for selective detection and imaging of cancer cells or tissues overexpressing these enzymes
Implementation Method 3
with two-photon excitation providing high resolution and minimal interference from tissues
Data Source
AI summary
A fluorescent probe for detecting a tyrosine kinase using a compound having an ortho-hydroxy-benzaldehyde structure, and use thereof are provided. The fluorescent probe can show a change in fluorescence when the compound binds with a tyrosine kinase. The compound can be readily synthesized and has high stability and low cytotoxicity in vivo. The fluorescent probe can be used to image cells or tissues overexpressing the tyrosine kinase, the fluorescent probe can be effectively used in a composition for imaging the tissues and a method of imaging the tissues. Also, the fluorescent probe can be used to image cancer cells or tissues since the fluorescent probe can exhibit fluorescence when the fluorescent probe binds to the cancer cells or tissues overexpressing the tyrosine kinase.