Bio-pin Peptide Complex Enhances Cell Adhesion
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Solution Overview
Problem
Current methods for cell transfer, such as using endothelial progenitor cells for myocardial infarction treatment, face low efficiency due to poor cell attachment to target tissues, and existing bioadhesives are not suitable for direct application in cell treatment and transplantation, while molecular imaging systems have limitations in diagnosing cells due to nanoparticle leakage.
Innovation Solution
A peptide-based complex is developed, comprising cell-penetrating and cell-adhesive peptides that can bind to cell membranes, enhancing intercellular adhesion without genetic modification, and can be used for cell transfer, treatment, diagnosis, and medical tools, including a contrast agent composition for imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If endothelial progenitor cells are transferred to cardiac muscular tissues for myocardial infarction treatment, then cell transfer is performed, but most transferred cells are washed off and only 3 to 5% attach to target tissues, resulting in poor cell transfer efficiency
Solution Approach 1:
The patent introduces a peptide-based complex as an intermediary substance that mediates between transferred cells and target cardiac muscular tissues. This complex acts as a molecular bridge that facilitates cell attachment to the target tissue, solving the problem of poor cell retention without requiring genetic modification of the cells themselves.
Solution Approach 2:
The patent changes the chemical and physical parameters of the cell-tissue interface by introducing a peptide-based complex with specific adhesive properties. This complex modifies the surface characteristics of target tissues, creating optimal conditions for cell attachment and significantly improving transfer efficiency from 3-5% to much higher levels.
2Productivity
If genes encoding adhesion proteins are transferred to cells to improve cell attachment effect, then cell attachment is enhanced, but cells become highly regulated as genetically modified cells, making commercialization difficult
Solution Approach 1:
Instead of directly modifying cells with adhesion genes, the patent uses a peptide-based complex as an external intermediary that provides the necessary adhesion function. This approach achieves enhanced cell attachment effects while avoiding the complexity and regulatory burden of genetic modification.
Solution Approach 2:
The patent extracts the essential adhesion function from the cellular context by using a separate peptide-based complex. This separates the adhesion mechanism from the cell itself, allowing attachment enhancement without requiring genetic modification of the cells, thereby simplifying the overall system and reducing regulatory complexity.
3Object-affected harmful factors
If bioadhesives are used for surgical sutures or industrial adhesives, then environmental friendliness is improved, but they are not suitable for direct application to cells for cell transfer and transplantation
Solution Approach 1:
The patent applies the concept of local quality by designing a peptide-based complex with specific local properties optimized for cell interaction. While maintaining the environmental friendliness of bio-based materials, the complex has tailored adhesive characteristics that are specifically suited for cell transfer and transplantation applications, bridging the gap between general bioadhesives and cell-specific requirements.
4Measurement precision
If nanoparticles are used as contrast agents for molecular imaging, then imaging capability is provided, but nanoparticles exude from cells and spread throughout the body, limiting diagnostic accuracy
Solution Approach 1:
The patent employs composite materials by combining peptide-based complexes with contrast agent molecules. This creates a hybrid structure that maintains the cell-binding capability of peptides while incorporating imaging functionality, preventing nanoparticle leakage and improving diagnostic accuracy by keeping the contrast agent localized at the target site.
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 peptide-based complex significantly increases intercellular adhesion, improving cell transfer efficiency and allowing for simultaneous diagnosis and treatment by anchoring cells to target tissues, while also providing a targeted contrast agent for imaging without the need for separate tissue-specific binding components.
Implementation Method 1
a peptide-based complex which is a fusion peptide of a cell-penetrating peptide and a cell membrane protein or a fusion peptide of a cell-penetrating peptide and a cell membrane protein and a cell-adhesive peptide
Implementation Method 2
a peptide-based complex represented by the following Structural Formula 1
Data Source
AI summary
A bio-pin is provided. The bio-pin can be used for cell transfer and treatment, cell tracing, and targeting of specific tissues and cells using a peptide-based complex in which a cell-penetrating peptide or a cell-adhesive peptide is bound to one or both ends of a cell membrane protein, and used in a molecular imaging system, a medical appliance, and the like.