Microbubble-Activated CAR-T Cell Sorting and Transduction
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Solution Overview
Problem
The current manufacturing process for CAR-T cells is complex, labor-intensive, and inefficient, leading to high costs and potential delays in producing a therapeutic dose, which is critical for treating cancer patients.
Innovation Solution
A method involving the use of gas-core lipid-shelled microbubbles conjugated with antibodies that bind to target cells, allowing for efficient activation and transduction of CD3+ T cells in a closed container system, reducing the need for multiple steps and cell handling, and enabling a one-pot workflow from pre-processing to viral transduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If sequential liquid handling steps and cell transfers are used in CAR-T manufacturing, then cell isolation and activation can be achieved, but cell losses increase and manufacturing time extends
Solution Approach 1:
The patent combines cell isolation, cell activation, and transduction steps into a single integrated workflow using magnetic beads that simultaneously perform separation and activation functions. This eliminates multiple transfer steps between different containers and reagents, directly reducing cell losses while maintaining isolation purity.
Solution Approach 2:
The magnetic beads are engineered to be multi-functional, serving as both separation agents (for isolating target cells) and activation agents (for stimulating T cells). This universal reagent replaces multiple specialized reagents and steps, reducing cumulative cell losses across the manufacturing process.
2Manufacturing precision
If multiple sequential manufacturing steps are performed, then CAR-T cells can be produced with required purity, but manufacturing time increases impacting patient prognosis
Solution Approach 1:
The patent merges isolation, activation, and transduction into a single concurrent process rather than sequential steps. Magnetic beads enable simultaneous cell separation and activation in one container, eliminating intermediate transfer times and reducing total manufacturing time while maintaining purity through magnetic separation.
Solution Approach 2:
The magnetic beads are pre-engineered with both separation and activation capabilities built-in, eliminating the need for sequential addition of different reagents. The activation function is prepared in advance on the bead surface, allowing immediate action upon contact with target cells, thus reducing manufacturing time.
3Reliability
If conventional activation methods using microbeads are used, then T cells can be activated for transduction, but the process becomes labor-intensive and inefficient
Solution Approach 1:
The magnetic beads are designed as universal reagents that perform both cell isolation and activation in a single step. This eliminates the need for separate isolation and activation procedures, significantly reducing labor intensity while maintaining reliable activation through the magnetic bead-mediated delivery of activation signals.
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 approach significantly enhances target cell recovery, purity, and activation, leading to a more efficient and cost-effective production of CAR-T cells, potentially improving the timely availability of therapeutic doses for patients.
Implementation Method 1
microbubble reagents comprising gas-core lipid-shelled microbubbles, and one or more antibodies or other ligands that bind to cell surface molecules on the target cells
Implementation Method 2
Buoyancy-activated cell sorting (BACS)-compatible activation/transduction systems
Data Source
AI summary
Disclosed herein are methods for contacting in a closed container a host liquid including target cells, microbubble reagents comprising gas-core lipid-shelled microbubbles, and one or more antibodies or other ligands that bind to cell surface molecules on the target cells, wherein the one or more antibodies or other ligands are bound to the target cells or the microbubbles, wherein the contacting under conditions to produce target cells linked to microbubbles via the one or more antibodies or other ligands and activating the target cells to generate activated target cells.