CA-IX-Positive Exosome Immunocapture for Reliable Tumor Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods struggle to reliably isolate tumor-derived exosomes and quantify tumor-related nucleic acid sequences for diagnostic purposes, particularly in a non-invasive and affordable manner.
Innovation Solution
Utilizing an anti-CA-IX antibody for immunocapture to isolate exosomes from biological fluids, followed by methods to detect and quantify specific nucleic acid sequences, allowing discrimination between tumor-affected and non-affected individuals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If generic exosome precipitation methods are used, then exosomes can be isolated from biological fluids, but the isolation lacks tumor-specificity and reliability
Solution Approach 1:
The patent uses anti-CA-IX antibodies as intermediary molecules to specifically capture tumor-derived exosomes from biological fluids. The antibodies act as mediators that bind to CA-IX markers on tumor exosomes, enabling selective isolation without requiring complex multi-step procedures. This resolves the contradiction by providing reliable tumor-specific isolation through a relatively simple immunocapture approach.
2Measurement precision
If tumor-specific markers are used for exosome isolation, then isolation specificity improves, but the method becomes less affordable and more complex
Solution Approach 1:
The patent extracts and focuses on a single key marker (CA-IX) for tumor exosome isolation, rather than using multiple markers or complex panels. By taking out just the essential CA-IX antibody component, the method achieves high measurement precision for tumor detection while maintaining ease of manufacture through a streamlined, single-antibody immunocapture protocol.
3Reliability
If multiple tumor markers are analyzed, then diagnostic accuracy improves, but the cost and complexity of the assay increases
Solution Approach 1:
The patent employs anti-CA-IX antibodies that serve multiple functions: they specifically isolate tumor-derived exosomes, enable concentration of tumor-specific nucleic acids, and facilitate subsequent detection of various tumor-related genetic markers. This multi-functional approach achieves reliable tumor diagnosis across different cancer types while minimizing reagent quantity by using a single universal antibody platform.
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
The method effectively isolates tumor-derived exosomes and enables meaningful detection and quantification of tumor-related nucleic acid sequences, providing a reliable diagnostic tool for various cancers.
Implementation Method 1
capturing exosomes from a sample of the biological fluid with an anti CA-IX antibody
Implementation Method 2
detecting the level of tumour-related nucleic acid sequence present in the exosomes captured in step a)
Data Source
AI summary
Methods and kits for isolating tumour-derived exosomes by immunocapture with an anti CA-IX antibody, quantifying tumour-related nucleic acid sequences from the isolated exosomes and determining in vitro the presence of a tumour in a subject are provided.