Stabilized MHC Class I Complexes Using Hydrophobic Carboxylic Acids
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Major Histocompatibility Complex (MHC) proteins, especially class I complexes without peptide ligands, are unstable and decay quickly, making their production and use in analytical and biological applications labor-intensive, and existing stabilization methods are not effective for empty MHC molecules or compositions.
Innovation Solution
A composition comprising an MHC protein and R1—COOH or its salt, where R1 is a substituted or unsubstituted hydrocarbyl, stabilizes the MHC protein, allowing for long-term storage and high-throughput screening, even when bound to dipeptides like GM, and is more cost-effective than previous stabilization methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If MHC class I complexes are produced without peptide ligands, then they can be used for high-throughput screening and peptide loading applications, but they become unstable and decay quickly
Solution Approach 1:
The patent introduces small organic molecules (specifically carboxylic acids with hydrophobic groups) as intermediary stabilizing agents that bind to the peptide-binding groove of MHC class I complexes. These molecules act as placeholders that maintain the structural integrity of the complex without being natural peptide ligands, thereby stabilizing the MHC for storage and handling while still allowing subsequent exchange with desired peptide ligands for screening applications
2Stability of the object's composition
If existing stabilization methods using artificial disulfide bridges or dipeptides are applied, then MHC stability is improved, but the process becomes more complex and labor-intensive
Solution Approach 1:
The patent changes the chemical parameters of the stabilizing agent from complex structures (artificial disulfide bridges, dipeptides like GM) to simple small organic molecules (carboxylic acids with hydrophobic groups). This parameter change simplifies the stabilization process while maintaining effectiveness, making it more suitable for high-throughput applications by reducing procedural complexity and labor requirements
Data Source
AI summary
The present invention relates to a composition comprising a major histocompatibility complex (MHC) protein, and an R1—COOH or salt thereof. The invention further relates to the use of an R1—COOH or salt thereof, for stabilizing an MHC protein. The invention also relates to a method for stabilizing an MHC protein. The invention also relates to a kit comprising an MHC protein, and an R1—COOH or salt thereof.