Click Chemistry Cell Labeling via Orthogonal Targeting
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Solution Overview
Problem
Current methods for labeling and targeting specific cell types are limited by the internalization of antibodies and their antigens, making it difficult to deliver agents efficiently and control cell fate and differentiation.
Innovation Solution
The use of click chemistry reagents allows for the specific and efficient delivery of agents to cells by reacting a first click reagent on the cell with a second click reagent, enabling precise control of agent delivery and cell differentiation through orthogonal targeting of different agents to various cell types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antibodies are used for cell-specific targeting, then cell-specific targeting is achieved, but the method is limited by internalization of the antibody and its cognate antigen from the cell surface
Solution Approach 1:
The patent uses click chemistry reagents as intermediary molecules that bind to cell surface antigens and serve as anchors for delivering agents to cells. These reagents remain on the cell surface and do not internalize with the antibodies, allowing continuous agent delivery without the limitations of antibody internalization.
Solution Approach 2:
The patent replaces the biological binding mechanism of antibodies with a chemical click chemistry mechanism. This substitution allows for more stable and controllable agent delivery, as the click chemistry reaction provides a reliable covalent bond between the targeting molecule and the agent, avoiding the dynamic internalization issues of antibody-antigen interactions.
2Manufacturing precision
If multiple agents are delivered to control cell fate and differentiation, then precise control of cell differentiation is achieved, but the complexity of delivering multiple agents increases
Solution Approach 1:
The patent segments the agent delivery system into modular components: different click chemistry reagents can be used to target different cell types, and different agents can be conjugated to these reagents. This segmentation allows for independent control and delivery of multiple agents to different cell types without creating a monolithic complex system.
Solution Approach 2:
The patent employs universal click chemistry reagents that can be used across different cell types and for delivering different agents. The same click chemistry platform can target various cell types with different antigens and deliver different therapeutic or diagnostic agents, reducing the need for multiple specialized delivery systems.
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
This method provides a precise and efficient means to deliver multiple agents to cells, maintaining their structural integrity and function, and allows for controlled cell differentiation and fate direction, particularly in stem cell populations.
Implementation Method 1
contacting the cell coupled to a first click reagent with the agent coupled to a second click reagent, wherein the second click reagent selectively reacts with the first click reagent coupled to the cell
Data Source
AI summary
Disclosed herein are compositions and methods for labeling cells using click chemistry reagents. The compositions and methods disclosed herein provide a specific and efficient means of localizing desired agents to a variety of cell types in vivo and in vitro. The compositions and methods disclosed herein can be used to deliver a variety of desired agents to a cell or population of cells to direct cell fate and/or cell differentiation.