LIF Gene Methylation Analysis for Follicular T-Helper Cell Identification
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Solution Overview
Problem
Current methods for identifying and quantifying follicular helper T cells are not robust enough and often require purification and enrichment steps, making them inconvenient and unreliable for clinical applications.
Innovation Solution
Analyzing the methylation status of CpG positions in the leukemia inhibitory factor (LIF) gene region, where demethylation indicates the presence of follicular helper T cells, allowing for their identification and quantification without purification or enrichment, using specific primers and amplification methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current methods for identifying follicular helper T cells are used, then identification can be performed, but the methods require purification and enrichment steps which reduce ease of operation and increase device complexity
Solution Approach 1:
The invention extracts and utilizes the specific epigenetic methylation pattern of the LIF gene region as a unique molecular signature for follicular helper T cells. By focusing on this specific biomarker rather than requiring cell purification, the method achieves reliable identification directly in complex samples, eliminating the need for enrichment steps while maintaining high specificity.
Solution Approach 2:
The invention introduces an intermediary epigenetic marker (methylation status of LIF gene CpG positions) that serves as a surrogate indicator for follicular helper T cell presence. This intermediary allows indirect detection of the target cells through their unique methylation pattern, enabling identification without direct cell isolation or purification.
2Reliability
If current methods for identifying follicular helper T cells are used, then identification can be performed, but the methods require purification and enrichment steps which increase device complexity
Solution Approach 1:
The invention extracts and utilizes the specific epigenetic methylation pattern of the LIF gene region as a unique molecular signature for follicular helper T cells. By focusing on this specific biomarker rather than requiring cell purification, the method achieves reliable identification directly in complex samples, eliminating the need for enrichment steps while maintaining high specificity.
Solution Approach 2:
The invention replaces mechanical cell separation and purification systems with a molecular-based epigenetic detection system. Instead of using physical methods to isolate cells, the method uses biochemical analysis of DNA methylation patterns, substituting complex mechanical workflows with a simpler molecular assay approach.
3Ease of operation
If methylation status analysis of LIF gene region is performed, then follicular helper T cells can be identified without purification, but new methodology and primers are required
Solution Approach 1:
The invention performs preliminary action by designing and providing specific primers and oligonucleotides that are pre-optimized for detecting the methylation status of LIF gene CpG positions. These pre-designed molecular tools enable direct application of the method to complex samples without requiring users to develop their own reagents, simplifying the overall process despite the novel epigenetic approach.
Solution Approach 2:
The invention changes the detection parameter from traditional cell surface markers or functional assays to epigenetic methylation status of specific CpG positions in the LIF gene. This parameter change enables direct analysis of DNA from complex samples, eliminating the need for cell purification while providing highly specific identification of follicular helper T cells through their unique methylation pattern.
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 provides a reliable and robust method for distinguishing follicular helper T cells from other cells in complex samples, enabling accurate detection and measurement in various diagnostic contexts, including autoimmune diseases and cancers, without the need for purification or staining procedures.
Implementation Method 1
analyzing the methylation status of at least one cytosine-phosphodiester-guanine (CpG) position in the mammalian gene region for leukemia inhibitory factor (LIF), wherein a demethylation of said gene region is indicative for a follicular helper T cell
Data Source
AI summary
The present invention relates to a method, in particular an in vitro method, for identifying follicular helper T cells, comprising analyzing the methylation status of at least one CpG position in the mammalian gene region for leukemia inhibitory factor (LIF), wherein a demethylation of said gene region is indicative for a follicular helper T cell, when compared to a non-follicular helper T cell. The analyses according to the invention can identify follicular helper T cells on an epigenetic level and distinguish them from all other cells in complex samples, such as, for example, other blood cells. The present invention furthermore provides an improved method for quantifying follicular helper T cells in complex samples. The method can be performed without a step of purifying and/or enriching cells, preferably in whole blood and/or non-trypsinized tissue.