Manganese-Based Organic Framework for Drug Delivery

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Solution Overview

Problem

Current drug delivery technologies face challenges in accurately targeting specific sites within the body, leading to inefficiencies and adverse effects due to the use of expensive and stability-compromising fluorescent dyes for monitoring, which can result in inaccurate results.

Innovation Solution

A label-free, stable manganese-based organic framework utilizing manganese ions and 1,1,2,2-tetrakis(4-carboxyphenyl)ethylene, providing a high surface area-to-volume ratio, excellent drug loading capacity, and inherent fluorescence for targeted drug delivery and monitoring, with a method involving deprotonation and precipitation steps.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If commercially available fluorescent dyes are used for monitoring nanocarriers, then optical signals allow monitoring of position and structure, but the process is expensive and time-consuming and may compromise stability and effectiveness

Engineering Contradiction:
Improvemonitoring capabilityVSAvoidnanocarrier stability
Core Design Contradiction:
Measurement precisionVSReliability

Solution Approach 1:

The nanocarrier system performs its own monitoring function through intrinsic fluorescence emitted by the manganese-based organic framework material itself, eliminating the need for external fluorescent dyes. The material's inherent photophysical properties enable it to serve both as the delivery vehicle and as the monitoring probe, thereby maintaining stability while providing monitoring capability.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The manganese-based organic framework nanocarrier simultaneously performs multiple functions: drug delivery, fluorescence monitoring, and pH sensing. By integrating these functions into a single material system, the patent eliminates the need for separate fluorescent labeling processes and maintains the stability and effectiveness of the nanocarrier while enabling comprehensive monitoring.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Measurement precision

If fluorescent dyes are fixed on nanocarriers for monitoring, then optical signals can be detected, but incorrect labelling or probe leakage leads to inaccurate results

Engineering Contradiction:
Improvemonitoring accuracyVSAvoidmonitoring data accuracy
Core Design Contradiction:
Measurement precisionVSLoss of information

Solution Approach 1:

The nanocarrier system generates its own fluorescence signal through the intrinsic properties of the manganese-based organic framework material, eliminating the need for external fluorescent probes. This self-emitting characteristic prevents labeling errors and probe leakage issues, ensuring that the fluorescence signal always accurately reflects the nanocarrier's position and state.

Inventive Principle:
Principle #25Self-service

3Productivity

If conventional drug delivery methods are used, then therapeutic molecules can be delivered, but accurate targeting of specific locations is hindered

Engineering Contradiction:
Improvedrug delivery efficiencyVSAvoidtargeting accuracy
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The manganese-based organic framework nanocarrier utilizes fluorescence emission as a visual and detectable signal to indicate its location and delivery status. This optical signaling capability enables real-time tracking and monitoring of the nanocarrier's movement through the body, allowing for accurate targeting verification and dynamic adjustment of the delivery system to improve both efficiency and precision.

Inventive Principle:
Principle #32Color changes

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 manganese-based organic framework enables efficient, stable, and pH-triggered drug delivery, reducing side effects and improving monitoring capabilities, while minimizing energy consumption and toxicity, making it suitable for various therapeutic applications.

Implementation Method 1

TCPE is fluorescent probe 1,1,2,2-tetracarboxyphenylethylene... the manganese-based organic framework... exhibiting properties of coordination polymers... inherent fluorescence for targeted drug delivery and monitoring

Methodology Applied
Scientific EffectFluorescence: Fluorescence

Implementation Method 2

the manganese-based organic framework is arranged to load drugs inside the pores of the manganese-based organic framework... excellent drug loading capacity

Methodology Applied
Scientific EffectAdsorption: Adsorption

Data Source

PatentUS20240376139A1Manganese-based organic framework and preparation method and drug delivery method
Publication Date: 2024.11.14 HONG KONG CENT FOR CEREBRO CARDIOVASCULAR HEALTH ENG LTD
  • US20240376139A1 patent drawing
  • US20240376139A1 patent drawing
  • US20240376139A1 patent drawing

AI summary

This invention relates to a manganese-based organic framework and its preparation method, as well as a drug delivery method. The manganese-based organic framework is formed by coordinating metal manganese ions (Mn) with the ligand 1,1,2,2-tetracarboxyphenylethylene. The structure of the manganese-based organic framework is Mn2(TCPE)(H2O), where TCPE is the fluorescent probe 1,1,2,2-tetracarboxyphenylethylene. The manganese-based organic framework can serve as a high drug-loading nanocarrier, capable of loading small to medium-sized active drug molecules for the treatment of cardiovascular diseases, cancer, microbial infections, wound healing, diabetes, Alzheimer's disease, tuberculosis, etc. Additionally, it possesses label-free intrinsic fluorescence capability, which plays a crucial role in the practical experiments and interventions for detecting nanocarriers and rapidly tracking drugs.