Water-Soluble AIE Polyenes for Amyloid Fibril Detection
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Solution Overview
Problem
Current fluorescent dyes for DNA detection and protein sensing suffer from aggregation-caused quenching, leading to reduced sensitivity and instability in aqueous environments, and lack effective bioprobes for monitoring amyloid fibrillation and G-quadruplex formation.
Innovation Solution
Development of water-soluble conjugated polyene compounds that exhibit aggregation-induced emission (AIE), which transition from faint emission in aqueous solutions to strong luminescence upon aggregation, enabling their use as 'turn-on' sensors for DNA detection, protein sensing, and monitoring amyloid fibrillation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fluorescent dyes are used in aqueous environments, then they provide initial fluorescence signal, but aggregation-caused quenching reduces sensitivity and stability
Solution Approach 1:
The patent applies the AIE mechanism where the harmful aggregation effect that causes quenching in conventional dyes is converted into a beneficial feature. The polyene compounds remain non-fluorescent in aqueous solution but exhibit strong fluorescence upon aggregation, turning the aggregation problem into a detection advantage for amyloid fibrils and G-quadruplex structures.
Solution Approach 2:
The patent changes the fundamental photophysical parameter of the fluorescent probe from ACQ-type to AIE-type behavior. This parameter change enables the probe to maintain stability in aqueous environments while achieving high sensitivity through aggregation-induced fluorescence enhancement rather than aggregation-caused quenching.
2Stability of the object's composition
If fluorescent dyes aggregate in aqueous solutions, then they form stable structures, but fluorescence emission is quenched
Solution Approach 1:
The patent inverts the conventional relationship between aggregation and fluorescence emission. Instead of aggregation causing quenching (ACQ), the polyene compounds exhibit aggregation-induced emission (AIE), where aggregation leads to enhanced fluorescence. This inversion resolves the contradiction by making aggregation beneficial rather than harmful.
3Measurement precision
If conventional fluorescent probes are used for amyloid detection, then they provide some detection capability, but they lack effectiveness and specificity
Solution Approach 1:
The patent develops polyene compounds that serve multiple functions: detecting amyloid fibrils, identifying G-quadruplex structures, and providing turn-on fluorescence signaling. This multi-functionality addresses the lack of effective bioprobes by creating a versatile platform that can detect multiple biomolecular structures with high effectiveness.
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 AIE-active polyenes provide enhanced sensitivity and stability, allowing for effective detection of biomolecules and amyloid fibrils, and can be used in high-throughput screening and anti-cancer drug development.
Implementation Method 1
water-soluble conjugated polyene compounds that exhibit aggregation-induced emission (AIE), which transition from faint emission in aqueous solutions to strong luminescence upon aggregation
Implementation Method 2
The AIE-active polyenes provide enhanced sensitivity and stability, allowing for effective detection of biomolecules and amyloid fibrils
Data Source
AI summary
The presently described subject matter is directed to a water-soluble conjugated polyene compound and the derivatives thereof that exhibit aggregation induced emission, as well as any water dispersible, fluorescent, polymeric microparticles, nanoparticles, and/or pharmaceutical composition comprising the water-soluble conjugated polyene compound and/or the derivatives thereof. Also provided are methods of making and using the compound, derivatives and particles of the presently described subject matter. The presently described water-soluble conjugated polyene compound are useful as bioprobes for the detection of biomacromolecules, in the manufacture of sensors, in monitoring and retarding formation of amyloid protein fibril in vitro and in vivo, and in developing anti-cancer drugs.