Antigen-Specific T Cell Generation via Simultaneous APC Induction
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Solution Overview
Problem
Current methods for generating antigen-specific T cells require a separate step for generating and isolating antigen-presenting cells, which is inefficient and may result in suboptimal activation or apoptosis of T cells due to deficient co-stimulation.
Innovation Solution
A method involving the culture of blood mononuclear cells in an antigen-presenting cell induction medium with IL-4, sCD40L, and GM-CSF, followed by antigen stimulation and subsequent expansion in IL-7 and IL-15, to produce antigen-specific T cells without the need for separate antigen-presenting cell isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate APC induction and isolation step is performed, then APCs can be generated, but the process becomes complex and time-consuming
Solution Approach 1:
The patent combines the APC induction step with the T cell priming step into a single culture system. Blood mononuclear cells are cultured simultaneously with antigen-presenting cells in the presence of cytokines (IL-4, IL-13, IL-33) and antigen, eliminating the need for separate isolation and induction steps while maintaining reliable APC generation and T cell activation.
2Reliability
If a separate APC induction and isolation step is performed, then APCs can be generated, but the process time increases
Solution Approach 1:
The patent merges the APC induction and T cell priming into a single simultaneous culture process. By co-culturing blood mononuclear cells with antigen and cytokines in one system, the total process time is reduced from sequential steps to a single integrated culture period, while still achieving reliable APC generation.
3Device complexity
If B cells or monocytes are used without maturation, then the process is simpler, but T cell activation is suboptimal
Solution Approach 1:
The patent changes the cytokine environment parameters by adding specific cytokines (IL-4, IL-13, IL-33) to the culture medium. These cytokines induce maturation of B cells and monocytes into functional APCs capable of optimal T cell activation, while maintaining the simplicity of a single culture system without separate maturation steps.
4Device complexity
If co-stimulation activation is deficient, then the process is simpler, but T cells undergo apoptosis or enter anergy
Solution Approach 1:
The patent modifies the activation parameters by incorporating specific cytokines (IL-4, IL-13, IL-33) that provide necessary co-stimulation signals. This ensures T cells receive adequate activation signals to prevent apoptosis and anergy, while the single culture system maintains process simplicity.
Data Source
AI summary
Provided herein are methods of generating T cells, e.g., cytotoxic T lymphocytes starting from peripheral blood mononuclear cells without a separate step of generating and isolating antigen-presenting cells, and with a single round of antigen stimulation. Also provided herein are methods of using said cytotoxic T lymphocytes, for example, to treat cancer and/or viral infection.