Amine-Dextran Magnetic Nanoparticles for Stable Multimodal Imaging
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Solution Overview
Problem
Current multimodal contrast agents face challenges in clinical applicability due to instability of chemically linked entities, lack of tunable surface functionalization, and inadequate magnetic properties, necessitating a need for a flexible and clinically applicable contrast agent with tunable magnetic properties and surface modifications.
Innovation Solution
Development of nanoparticle compositions comprising ferric chloride, ferrous chloride, and dextran coatings with tunable amine groups and magnetic properties, allowing for customizable surface functionalization and magnetic strength through controlled concentrations of ferric and ferrous chloride.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple entities are chemically linked together using chemical linkers to create multimodal contrast agents, then the contrast agent can be detected by various imaging modalities, but the chemical linkers have varying stabilities in cells and tissues or across time, causing entities to separate and degrading the quality and usefulness of the contrast agent
Solution Approach 1:
The patent combines multiple imaging entities (magnetic nanoparticles, fluorescent dyes, quantum dots) into a single integrated nanoparticle structure, eliminating the need for chemical linkers that connect separate entities. This merging approach maintains stability while enabling multimodal detection through the integrated structure.
Solution Approach 2:
The patent uses composite nanoparticle materials that inherently provide multiple imaging modalities within a single stable structure. The composite nature allows simultaneous magnetic, fluorescent, and other imaging capabilities without requiring unstable chemical linkers to hold separate entities together.
2Stability of the object's composition
If a core-shell structure is formed to avoid chemical linking problems, then stability is improved, but there have been significant problems developing a core-shell structure that can be clinically applied, and currently available particles lack tunable surface functionalization and magnetic properties
Solution Approach 1:
The patent employs dynamic surface functionalization where the nanoparticle surface can be easily modified with different targeting moieties, antibodies, or ligands. This dynamic adaptability allows clinical applications to be tailored for specific targets while maintaining the stable core-shell structure, and magnetic properties can be adjusted by changing the nanoparticle composition.
Solution Approach 2:
The patent enables tuning of magnetic properties by adjusting parameters such as nanoparticle size, composition ratios of magnetic materials, and coating thickness. Surface functionalization can be modified by changing surface chemistry parameters, allowing the same core-shell structure to be adapted for different clinical applications without compromising stability.
3Reliability
If chemically linked multimodal contrast agents are used, then multiple imaging modalities are achieved, but the chemical linkers often have varying stabilities, meaning that some of the entities could separate, thus degrading the quality and usefulness
Solution Approach 1:
The patent merges multiple imaging functions into a single nanoparticle entity, eliminating the need for chemical linkers that connect separate entities. This integration ensures that all imaging modalities are delivered through one stable structure, preventing entity separation and maintaining consistent quality and reliability throughout circulation and imaging processes.
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 nanoparticle compositions provide stable, tunable magnetic properties and surface functionalization, enabling effective imaging and potential therapeutic applications, such as tumor targeting and sustained drug delivery, with long-term stability and biocompatibility.
Implementation Method 1
a magnetic nanoparticle including: ferric chloride, ferrous chloride, or a combination thereof
Implementation Method 2
the magnetic nanoparticle has a non-linearity index ranging from about 6 to about 40
Implementation Method 3
a dextran coating functionalized with one or more amine groups, wherein the number of the one or more amine groups ranges from about 5 to about 1000
Data Source
AI summary
The present disclosure presents nanoparticle compositions for use in the treatment, prevention, or imaging of a disease (e.g., cancer), methods of treating, preventing, or imaging a disease in a subject in need thereof with the nanoparticle compositions, and methods of preparing the nanoparticle compositions of the disclosure. The nanoparticle compositions can include a magnetic nanoparticle ferric chloride, ferrous chloride, or a combination thereof, and a dextran coating functionalized with one or more amine groups.