Cell-Membrane-Coated Bio-Nanoshells for Diseased-Cell Targeting
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Solution Overview
Problem
Existing light-responsive nanoshells face challenges in specifically targeting diseased cells while minimizing delivery to non-targeted cells, leading to inefficient imaging and phototherapeutic outcomes due to non-specific distribution and immune response.
Innovation Solution
Coating nanoshells with cell-derived biological membranes that include a phospholipid bilayer and adhesion proteins to enhance targeting specificity and immune evasion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If nanoshells are coated with PEG to extend circulation time, then circulation duration is improved, but specific targeting of diseased cells deteriorates and immune response increases
Solution Approach 1:
The patent uses cell membranes as intermediary coating materials between the nanoshell core and the biological environment. These membranes serve as a mediator that provides both circulation stability and targeted binding capability, resolving the contradiction between extended circulation and specific targeting by incorporating adhesion proteins that recognize diseased cells while maintaining a biocompatible surface.
Solution Approach 2:
The patent creates composite nanoshell structures by combining the photothermal nanoshell core with cell membrane coatings. This composite approach integrates the advantages of both components: the nanoshell provides photothermal conversion capability while the cell membrane coating provides targeted delivery and immune evasion, achieving both circulation durability and targeting specificity simultaneously.
2Measurement precision
If nanoshells are coated with antibodies or peptides to enable cell-specific targeting, then targeting specificity is improved, but delivery efficiency deteriorates compared to PEG-coated NPs
Solution Approach 1:
The cell membrane coating acts as an intermediary that enhances the binding capability of targeting molecules. By incorporating adhesion proteins directly into the membrane structure, the patent creates a more effective mediator that improves both targeting specificity and delivery efficiency, overcoming the limitation of traditional antibody or peptide coatings.
Solution Approach 2:
The patent employs flexible cell membranes as thin film coatings on the nanoshell surface. This flexible membrane structure allows for dynamic interaction with target cell surfaces, enhancing binding efficiency and internalization, thereby improving delivery productivity while maintaining high targeting specificity through the natural flexibility and adaptability of biological membranes.
3Object-affected harmful factors
If PEG coatings are used to minimize protein opsonization, then immune response is reduced, but delivery to diseased cells deteriorates
Solution Approach 1:
The cell membrane coating serves as a sophisticated intermediary that simultaneously achieves immune evasion and enhanced disease-specific delivery. The membrane structure presents a biocompatible surface that minimizes protein opsonization while incorporating adhesion proteins that specifically recognize and bind to diseased cells, thereby resolving the contradiction between immune response reduction and delivery enhancement.
Solution Approach 2:
The patent applies local quality by creating a heterogeneous surface on the nanoshell where different regions of the cell membrane coating perform different functions: some regions provide immune evasion through biocompatible lipid structures, while other regions contain adhesion proteins that mediate specific binding to diseased cells. This spatial differentiation of functional properties resolves the contradiction between immune compatibility and targeted delivery.
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 bio-nanoshells effectively target diseased cells, improving imaging contrast and phototherapy by enhancing delivery efficiency and evading the immune system.
Implementation Method 1
the cell-derived biological membrane comprises a phospholipid bilayer and an adhesion protein specific for the target cell
Implementation Method 2
Light-responsive nanoparticles (NP) that emit heat upon excitation with light can be utilized in numerous biomedical applications to enable imaging and/or treatment of disease
Data Source
AI summary
The present invention provides a bio-nanoshell for binding specifically to a target cell. The bio-nanoshell may comprise a cell-derived biological membrane from a donor cell and a nanoshell having an exterior surface coated with the cell-derived biological membrane. The cell-derived biological membrane may comprise a phospholipid bilayer and an adhesion protein specific for the target cell. Also provided is a method for preparing the bio-nanoshells and a method for delivering the bio-nanoshells to target cells.