Phosphorylation Site Detection in ALCL Signaling Pathways
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Solution Overview
Problem
Current understanding of protein phosphorylation, particularly in Anaplastic Large-Cell Lymphoma (ALCL), is limited due to the complexity of the cellular modification system and the lack of advanced technological tools, hindering the identification of key phosphorylation sites and signaling pathways involved in oncogenesis.
Innovation Solution
Identification of 211 novel phosphorylation sites in ALCL-related signaling proteins and the development of phosphorylation-site specific antibodies and AQUA peptides for the detection and quantification of these sites, utilizing immunoaffinity isolation and mass spectrometric characterization methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If advanced technological tools and methods are developed for identifying phosphorylation sites, then measurement precision and detection capability improve, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent employs immunoaffinity isolation antibodies as intermediary tools that specifically bind to phosphorylated peptides, enabling their selective enrichment from complex biological mixtures. This intermediary approach allows mass spectrometry to detect phosphorylation sites with high precision without requiring direct analysis of the entire proteome, thus managing technological complexity while improving measurement precision.
Solution Approach 2:
The patent segments the complex task of phosphorylation site identification into distinct steps: (1) immunoprecipitation of phosphorylated peptides using specific antibodies, (2) enrichment of target peptides from complex mixtures, and (3) mass spectrometric analysis of enriched samples. This segmentation reduces the complexity of each individual step while achieving high overall detection precision.
2Productivity
If motif-specific antibodies are used to detect phosphorylation sites across multiple proteins, then productivity and efficiency improve, but manufacturing precision and specificity challenges increase
Solution Approach 1:
The patent develops motif-specific antibodies that recognize conserved phosphorylation motifs across multiple different proteins. These universal antibodies can detect the same phosphorylation motif in various substrates simultaneously, greatly improving identification efficiency and productivity without requiring separate antibodies for each protein, while maintaining specificity through motif-based recognition.
3Loss of information
If the complexity of the cellular modification system is fully characterized, then understanding of signaling pathways improves, but loss of time and resources increase
Solution Approach 1:
The patent performs preliminary enrichment of phosphorylated peptides using immunoaffinity isolation before mass spectrometric analysis. This preliminary action concentrates the relevant phosphorylated species from complex mixtures, enabling more complete characterization of signaling pathways in less time by focusing analytical resources on the most relevant targets rather than attempting to analyze all proteins simultaneously.
Data Source
AI summary
The invention discloses 211 novel phosphorylation sites identified in signal transduction proteins and pathways underlying Anaplastic Large Cell Lymphoma (ALCL) involving the ALK-NPM translocation/fusion, and provides phosphorylation-site specific antibodies and heavy-isotope labeled peptides (AQUA peptides) for the selective detection and quantification of these phosphorylated sites/proteins, as well as methods of using the reagents for such purpose. Among the phosphorylation sites identified are sites occurring in the following protein types: Protein Kinases (including Receptor Tyrosine Kinases), Adaptor/Scaffold Proteins, Cellular Metabolism or Miscellaneous Enzymes, Oxidoreductases, Transcription Factors, Cytoskeletal Proteins, Translation Initiation Complexes, RNA Binding Proteins, Proteases, Acetyltransferases, G protein regulators/GTPases, Helicases, Apoptosis/Cell Cycle Regulation proteins, and Hydrolases.