AIRE-Modified HLA Cell Lines for Diverse Peptide Presentation
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Solution Overview
Problem
Existing AI models for cellular immunology studies suffer from limited generalization due to insufficient training data diversity, particularly in cell lines lacking HLA expression, which hinders the recognition of diverse peptide sequences and contributes to autoimmune diseases.
Innovation Solution
Introduce HLA genes into cell lines using lentiviral transduction and overexpress AIRE to induce expression of tissue-specific proteins, altering the gene and protein profiles and thereby changing the types of peptides presented by HLA molecules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cell lines lacking HLA expression are used for immunology studies, then the cell lines can be used for HLA-related cellular immunology studies, but the training data diversity is insufficient and the generalization ability of AI models is limited
Solution Approach 1:
The patent changes the expression profile parameters of the cell line by introducing the AIRE gene, which fundamentally alters which proteins are expressed and presented by HLA molecules. This parameter change enables the cell line to present a diverse range of peptide sequences including tissue-specific proteins, thereby increasing training data diversity and improving AI model generalization ability.
Solution Approach 2:
The patent makes the cell line multi-functional by enabling it to express both HLA molecules and a wide variety of tissue-specific proteins through AIRE expression. This allows the cell line to serve both as an HLA expression system and as a source of diverse peptide sequences for training AI models, bridging the gap between specialized cell lines and training data diversity requirements.
2Adaptability or versatility
If AIRE is overexpressed in cell lines, then the diversity of HLA-presented peptides is increased, but the complexity of cell line modification and protein profile changes increases
Solution Approach 1:
The patent performs preliminary action by introducing the AIRE gene into the cell line before HLA expression is activated. This preliminary genetic modification ensures that when HLA molecules are expressed, they are ready to present a diverse array of peptides including tissue-specific proteins, thereby maximizing peptide diversity without requiring subsequent complex modifications.
Solution Approach 2:
The AIRE gene acts as an intermediary that mediates between the cell line's genetic machinery and the desired diverse protein expression profile. By introducing AIRE as a transcription factor, the patent enables controlled expression of tissue-specific proteins that would otherwise be inaccessible, simplifying the overall system while achieving complex peptide presentation diversity.
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
Enhances the diversity of peptide sequences presented by HLA, improving the performance of AI models by increasing the variety of peptides available for training, thus enhancing their predictive capabilities.
Implementation Method 1
HLA genes are lentiviral-transduced into cell lines, so that the cell lines express HLA molecules. Afterwards, the cell lines expressing the HLA molecule are transduced with a lentiviral vector carrying an AIRE gene.
Data Source
AI summary
The invention provides a method for changing an HLA presentation of peptides in a cell line, a cell line with a changed HLA presentation of peptides and a use thereof. The method for changing the HLA presentation includes following steps. HLA genes are lentiviral-transduced into K562 cell lines, so that the cell lines express HLA molecules. Afterwards, the cell lines expressing the HLA molecule are transduced with a lentiviral vector carrying an AIRE gene. Through the overexpression of AIRE, a gene transcription profile and a protein profile expressed by the cell line are changed, resulting in a change in a type of peptide presented by the HLA molecule.