Cell Surface Binding Domains for Targeted Therapeutic Homing
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Solution Overview
Problem
Existing cell-based therapeutics face challenges in effectively migrating to target sites in the human body and providing therapeutic benefits.
Innovation Solution
Modified mammalian cells expressing a CTLA-4 binding domain on their surface, which binds to a target molecule, enabling targeted delivery of therapeutic agents to specific sites in vivo.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cell-based therapeutics are used to treat patients, then therapeutic benefit is provided, but the cells fail to migrate effectively to target sites
Solution Approach 1:
The patent introduces a binding domain as an intermediary molecule expressed on the cell surface that mediates interaction with target molecules. This binding domain acts as a mediator between the therapeutic cell and the target site, enabling specific recognition and attachment to target cells or tissues, thereby solving the migration problem while maintaining therapeutic benefit.
Solution Approach 2:
The patent modifies the cell surface properties by introducing a specific binding domain with defined binding characteristics. This parameter change in cell surface morphology/chemistry enables the cell to recognize and bind to specific target molecules, improving migration efficiency to target sites while preserving therapeutic function.
2Ease of operation
If a binding domain is introduced on cell surface, then targeted delivery is enabled, but cell structure becomes more complex
Solution Approach 1:
The patent segments the therapeutic cell into functional components: the native cell structure providing therapeutic function and the added binding domain providing targeting function. This segmentation allows independent optimization of each function while maintaining overall system simplicity, as the binding domain is a discrete modular element rather than a complete redesign.
Solution Approach 2:
The binding domain is designed to perform multiple functions: it provides targeted delivery to specific sites, enables cell recognition and binding to target molecules, and can be integrated into various cell types. This multi-functionality reduces the need for separate targeting mechanisms, thereby limiting the increase in overall system complexity.
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 modified cells efficiently home to target molecules, delivering therapeutic agents and providing therapeutic benefits, such as anticancer agents or promoting tissue regeneration and repair.
Implementation Method 1
a binding domain which binds to a target molecule... binding of the CTLA-4 binding domain to the target molecule homes the cell to the target molecule in vivo
Data Source
AI summary
The present disclosure relates to a mammalian cell which is modified to express on the surface of its membrane a binding domain which binds to a target molecule. The disclosure also relates to protein constructs and nucleic acids for producing such modified mammalian cells, and to methods for using the mammalian cells to deliver therapeutic agents to target cells or tissues in vivo.