Chlorotoxin Conjugates for Intraoperative Fluorescent Tumor Detection
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Solution Overview
Problem
Current methods for intra-operative identification of tumor margins or small foci of cancer cells are imprecise and rely heavily on surgical judgment, limiting the extent of surgical resection and risking harm to vital structures.
Innovation Solution
Development of chlorotoxin conjugates with a detectable label that bind selectively to cancer cells, allowing for intra-operative visualization and detection through imaging techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional surgical methods are used for tumor resection, then surgical judgment and experience are required, but measurement precision and detection accuracy deteriorate
Solution Approach 1:
The patent introduces an intermediary detection system consisting of fluorescently labeled antibodies or peptides that specifically bind to tumor antigens. These molecular mediators translate the invisible biological markers into visible fluorescent signals, enabling precise tumor margin identification without requiring complex surgical judgment while maintaining surgical workflow simplicity
Solution Approach 2:
The patent employs fluorescent labels that emit specific colors (e.g., green, red, near-infrared) when bound to tumor tissues. This color change principle transforms invisible tumor boundaries into visually distinct fluorescent patterns, allowing real-time visualization of tumor margins during surgery with simple imaging devices rather than complex analytical equipment
2Reliability
If surgical resection is extended to ensure complete tumor removal, then cancer detection completeness improves, but harm to vital structures increases
Solution Approach 1:
The patent implements real-time fluorescent feedback during surgery. As the surgeon resects tissue, the fluorescent signal continuously provides feedback on tumor presence, allowing dynamic adjustment of resection boundaries. This feedback loop ensures complete tumor removal while automatically preserving healthy structures that lack fluorescent signal, eliminating the need for overly aggressive resection
Solution Approach 2:
The patent applies fluorescent labeling agents before surgery to pre-mark tumor tissues. This preliminary action allows the surgical team to预先 identify tumor boundaries and plan resection margins in advance, ensuring complete tumor removal while avoiding unnecessary resection of healthy structures during the actual surgical procedure
3Measurement precision
If intra-operative visualization is implemented, then tumor detection accuracy improves, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex mechanical surgical judgment and visual inspection systems with a simpler optical-fluorescent detection system. Instead of relying on sophisticated surgical expertise to identify tumor margins, the system uses fluorescent labeling combined with straightforward imaging devices, substituting mechanical/cognitive complexity with optical simplicity while dramatically improving detection accuracy
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 precision of surgical resection by enabling real-time visualization of cancerous tissues, reducing the risk of incomplete resection and damage to healthy structures.
Implementation Method 1
chlorotoxin conjugates with a detectable label that bind selectively to cancer cells
Data Source
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AI summary
Compositions, formulations and kits comprising chlorotoxin conjugate compounds are provided, including native and modified variants of chlorotoxin peptide conjugated to reporter molecules including fluorescent dyes. Methods of detecting and treating cancers and tumors with chlorotoxin conjugate compounds are also provided, including methods of imaging tumor tissues and cells. Dosing and pharmacokinetic profiles for therapeutic and diagnostic applications using chlorotoxin conjugate compounds are also provided.