Tunable Protein Assemblies for T Cell Activation
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Solution Overview
Problem
Current immunotherapy approaches for cancer treatment face challenges in effectively activating and expanding tumor-specific T cells, as they often rely on quantity rather than quality of T cells, leading to insufficient immune responses and poor clinical outcomes.
Innovation Solution
The development of tunable and scalable protein assemblies (TSPAs) that mimic the natural immunological synapse by using orthogonal pairs of anchor and dock subunits to precisely arrange T cell-activating ligands, such as pMHC, adhesion, and co-stimulatory proteins, to enhance T cell activation and expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a large amount of antigen-reactive T cells are infused to supplement the innate T cell response, then the quantity of T cells is increased, but the quality and effectiveness of T cell activation is insufficient
Solution Approach 1:
The invention changes the parameters of T cell activation by using defined ligand concentrations and spatial arrangements on artificial antigen-presenting cells. Instead of simply increasing T cell quantity, the system optimizes activation parameters including pMHC density, co-stimulatory molecule ratios, and adhesion molecule concentrations to generate high-quality, persistent central memory T cells with enhanced effectiveness
Solution Approach 2:
The invention copies the natural immunological synapse structure and signaling patterns onto artificial surfaces. By replicating the spatial organization and molecular composition of natural APC-T cell interfaces, the system generates T cell activation responses that mimic physiological conditions, producing high-quality activated T cells without requiring large infusions
2Reliability
If T cell activity is suppressed to control excessive immune response, then immune response control is improved, but the number of effective T cells becomes insufficient
Solution Approach 1:
The invention creates a dynamic activation system where T cell response intensity is controlled by adjustable ligand concentrations and spatial arrangements on the artificial APC surface. By tuning these parameters, the system can generate controlled, sustained activation that produces persistent memory T cells without excessive suppression, maintaining both control and effectiveness
3Ease of manufacture
If conventional immunotherapy methods are used to activate T cells, then the treatment approach is simple, but the clinical outcomes are poor
Solution Approach 1:
The invention introduces artificial antigen-presenting cells as an intermediary between the patient's T cells and the therapeutic goal. These engineered particles provide controlled, optimized activation signals that bridge the gap between simple infusion procedures and high-quality T cell activation, achieving improved clinical outcomes through a relatively straightforward manufacturing and administration process
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 allows for improved T cell activation and expansion by replicating the natural immunological synapse, leading to enhanced anti-tumor activity and personalized immunotherapy strategies that address patient variability and affordability.
Implementation Method 1
a dock protein comprising a first dock subunit that is an orthogonal binding partner of the first anchor subunit and a second dock subunit; and a pMHC protein comprising an antigenic peptide and a second anchor subunit that is an orthogonal binding partner of the second dock subunit
Data Source
AI summary
Provided herein is technology relating to immunotherapy and particularly, but not exclusively, to compositions, methods, and kits for immunotherapy and activation of T cells using a peptide-major histocompatibility complex (pMHC) assembled on a protein scaffold for patterned signal presentation of T cell activating ligands to T cells.