Cell-Penetrating Peptide Magnetic Nanoparticle Complex for Direct Delivery
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Solution Overview
Problem
Current methods for cell imaging and drug delivery face challenges such as the inefficiency of magnetic nanoparticles in penetrating cells without endocytosis, toxicity concerns with viral peptides, and the need for safer, more effective targeting in biomedical applications.
Innovation Solution
A cell-penetrating peptide/fluorescence-labeled magnetic nanoparticle complex is developed by chemically linking a low molecular weight protamine peptide to fluorescence-labeled magnetic nanoparticles, allowing direct cell penetration without endocytosis and enhancing imaging diagnosis with optimal targeting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnetic nanoparticles are used for cell imaging and drug delivery, then imaging contrast and delivery capability are improved, but cell penetration efficiency without endocytosis deteriorates
Solution Approach 1:
The patent employs a cell-penetrating peptide as an intermediary molecule that bridges the magnetic nanoparticle and the cell membrane. This peptide mediator facilitates direct penetration through the membrane without requiring endocytosis, thereby maintaining the nanoparticle's imaging contrast capability while significantly improving cell penetration efficiency.
Solution Approach 2:
The invention creates a composite structure combining magnetic nanoparticles with cell-penetrating peptides. This composite material integrates the imaging properties of magnetic nanoparticles with the membrane-penetrating capability of peptides, achieving both high imaging contrast and efficient cell penetration through a single unified structure.
2Productivity
If viral peptides are used as transporters for cell delivery, then cell penetration capability is improved, but toxicity and safety deteriorate
Solution Approach 1:
The patent utilizes small, simple cell-penetrating peptides rather than complex viral proteins. These peptide transporters are much simpler in structure, easier to produce, and lack the toxicity associated with viral peptides, while still achieving effective cell penetration through their ability to interact with cell membrane components.
3Ease of operation
If magnetic nanoparticles are directly introduced into cells, then delivery simplicity is improved, but stability and lack of endocytosis mechanism deteriorates
Solution Approach 1:
The cell-penetrating peptide acts as a stable intermediary carrier that maintains the magnetic nanoparticle's structural integrity during intracellular transport. This peptide mediator protects the nanoparticle from degradation and ensures stable composition throughout the delivery process, while still allowing simple direct introduction into cells.
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 complex achieves stable cell delivery and maximizes imaging diagnosis with minimal side effects, improving the efficiency and safety of cell imaging and drug delivery compared to existing viral peptide transporters.
Implementation Method 1
a cell-penetrating peptide/fluorescence-labeled magnetic nanoparticle complex in which the cell-penetrating peptide is chemically linked to the fluorescence-labeled magnetic nanoparticle
Implementation Method 2
Such MRI contrast agents are classified according to their effects on a magnetic field into paramagnetic and superparamagnetic materials which are called 'positive contrast agents' and 'negative contrast agents', respectively
Implementation Method 3
preparing a fluorescence-labeled magnetic nanoparticle by adding a fluorescent substance to the amino group-containing magnetic nanoparticle
Data Source
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AI summary
The present invention relates to a cell-penetrating peptide/fluorescence-labeled magnetic nanoparticle complex and the use thereof. More specifically, relates to a cell-penetrating peptide/fluorescence-labeled magnetic nanoparticle complex in which a cell-penetrating peptide is chemically linked to a fluorescence-labeled magnetic nanoparticle, such that fluorescence-labeled magnetic nanoparticle can be stably introduced directly into cells without endocytosis, and a composition for cell imaging containing the complex. The disclosed invention suggests an innovative therapeutic technology which shows high stability, maximizes the effect of imaging diagnosis through optimal targeting and minimizes side effects, unlike existing viral peptide transporters.