Engineered B Cell Culture for T Cell Epitope Screening
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Solution Overview
Problem
Current methods for determining T cell epitopes are time-consuming, expensive, and involve significant discomfort due to the need for frequent isolation and short-lived dendritic cell cultures, with high background noise complicating accurate detection.
Innovation Solution
A method involving the induction and maintenance of BCL6 expression in B cells, along with anti-apoptotic nucleic acids, to create long-term B cell cultures that can be used to screen for T cell epitopes by incubating them with compounds and T cells, allowing for sensitive and accurate recognition of T cell epitopes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dendritic cells are used for T cell epitope screening, then accurate T cell recognition can be detected, but the process becomes time-consuming and expensive due to frequent isolation and short-lived cultures
Solution Approach 1:
The patent uses B cells as a surrogate model to replicate the antigen presentation function of dendritic cells. B cells are engineered to express MHC molecules and co-stimulatory molecules, allowing them to present epitopes to T cells in a manner that mimics dendritic cell function. This copying approach enables long-term culture without requiring frequent isolation of primary dendritic cells.
Solution Approach 2:
The patent modifies the cultural parameters by transitioning from short-lived dendritic cell cultures to long-term B cell cultures. B cells are engineered with specific molecular characteristics (MHC expression, co-stimulatory molecule expression) that enable them to maintain stable antigen presentation capabilities over extended periods, fundamentally changing the temporal parameter of the screening process.
2Adaptability or versatility
If dendritic cell cultures are performed repeatedly, then comprehensive epitope screening is achieved, but costs increase significantly
Solution Approach 1:
The patent creates a reusable B cell system that copies the essential functional characteristics of dendritic cells. These engineered B cells can be cultured indefinitely and used repeatedly for epitope screening, eliminating the need to continuously generate fresh dendritic cell cultures, thereby significantly reducing resource consumption and costs.
Solution Approach 2:
The patent establishes a continuous culture system using B cells that can maintain antigen presentation functionality over extended periods. This continuous action allows the same B cell population to be used for multiple screening experiments without regeneration, transforming the discontinuous, resource-intensive dendritic cell process into a sustainable, cost-effective system.
3Measurement precision
If fresh monocytes are obtained frequently for DC culture, then accurate T cell selection is possible, but significant discomfort is caused to the individual
Solution Approach 1:
The patent performs preliminary action by obtaining and engineering B cells from an individual only once, creating a long-term culture system that can be used for multiple epitope screening experiments. This single initial sampling event replaces the need for repeated fresh monocyte collection, significantly reducing the discomfort and invasive procedures required from the individual.
4Duration of action of stationary object
If BCL6 expression is induced in B cells, then long-term culture expansion is achieved, but background noise increases
Solution Approach 1:
The patent applies local quality by selectively inducing BCL6 expression only in specific B cell populations that require long-term expansion, rather than uniformly across all B cells. This targeted approach enables long-term culture of the necessary B cell subset while minimizing unnecessary BCL6 expression that could generate background noise in the detection system.
Data Source
AI summary
The invention provides improved screening methods for testing T cell recognition of T cell epitopes.