Chimeric Siloxane Surfaces for Live Bladder Tumor Organoid Analysis
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Solution Overview
Problem
Current techniques for studying the spatial and temporal dynamics of RNAs in cancer cells during collective cancer invasion, such as RNA sequencing and RNA fluorescence in situ hybridization, fail to provide accurate staging and grading of bladder cancer due to their destructive nature, and existing biomarkers are insufficient for comprehensive prediction of bladder cancer progression.
Innovation Solution
The development of chimeric surfaces comprising siloxanes and lubricants, which facilitate the self-assembly of organoids from cancer cells, allowing for the analysis of lncRNA MALAT1 expression and tumor invasion patterns, integrating genotypic and phenotypic assays for bladder cancer prognosis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If RNA sequencing or RNA fluorescence in situ hybridization is used to analyze RNA in cancer cells, then RNA expression can be detected, but the spatial and temporal dynamics of RNAs during collective cancer invasion cannot be revealed due to sample lysis or fixation
Solution Approach 1:
The patent applies preliminary action by pre-assembling tumor organoids on chimeric surfaces before invasion analysis. The chimeric surface is prepared in advance with specific biochemical properties that maintain cell viability and organizational structure, allowing subsequent live imaging without sample fixation or lysis. This preliminary preparation enables both RNA detection and preservation of spatial-temporal dynamics.
Solution Approach 2:
The chimeric surface acts as an intermediary between the cancer cells and the analysis system. It provides a controlled microenvironment that maintains cell viability while allowing RNA access for detection. The surface mediates between the need for fixed samples (for stable RNA detection) and live samples (for spatial-temporal dynamics), enabling both objectives to be achieved simultaneously.
2Ease of operation
If existing biomarkers are used for bladder cancer prognosis, then rapid and noninvasive testing is provided, but comprehensive prediction of cancer progression cannot be achieved due to limited number of biomarkers
Solution Approach 1:
The chimeric surface assay platform serves multiple functions: it enables phenotypic analysis of tumor invasion, genotypic analysis of RNA expression, and prediction of cancer progression. By integrating these functions into a single system, the patent achieves comprehensive prediction while maintaining ease of operation through a unified assay platform that can process multiple parameters simultaneously.
Solution Approach 2:
The patent merges phenotypic analysis (tumor invasion morphology) and genotypic analysis (RNA expression levels) into a single integrated assay system. The chimeric surface platform allows simultaneous observation of both phenotypic behavior and molecular expression, combining multiple diagnostic capabilities into one comprehensive test that improves prediction accuracy while maintaining operational simplicity.
3Shape
If imaging-based methods are used to reflect cancer cell morphology and penetration, then visual assessment of tumor invasion is provided, but gene expression analysis cannot be performed due to reliance on physician experience
Solution Approach 1:
The patent merges imaging-based morphological analysis with molecular RNA detection in a single integrated platform. The chimeric surface assay allows simultaneous visualization of tumor invasion patterns and quantification of RNA expression levels, combining phenotypic and genotypic information without requiring separate procedures or subjective physician interpretation.
Solution Approach 2:
The patent replaces subjective physician visual assessment with objective quantitative measurement systems. Instead of relying on physician experience to interpret imaging results, the system uses standardized imaging parameters and computational analysis to objectively measure morphological features, while simultaneously providing molecular RNA data for comprehensive, objective cancer progression assessment.
4Measurement precision
If live single cell biosensors with high spatiotemporal resolution are used to investigate lncRNA function, then dynamic RNA behavior can be observed, but the complexity of the assay system increases significantly
Solution Approach 1:
The chimeric surface acts as an intermediary that simplifies the assay system while enabling high spatiotemporal resolution observation. Rather than complexing the biosensor system itself, the patent uses the engineered surface to control and standardize the microenvironment, which naturally enhances observation quality without adding significant system complexity. The surface mediates between simple cell culture and complex live imaging requirements.
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 chimeric surfaces enable high-throughput analysis of tumor organoids, providing comprehensive insights into bladder cancer invasiveness by combining MALAT1 nanobiosensing with phenotypic and genotypic analysis, enhancing the accuracy of bladder cancer staging and grading.
Implementation Method 1
The siloxane film may be deposited (e.g., placed or formed) on a desired surface and heated (e.g., heated to 70° C. for 2 hours) to form a flat layer of siloxane
Implementation Method 2
The lubricant may then be contacted with the siloxane and heated (e.g., incubated at 55° C. overnight)
Implementation Method 3
The film may then be sterilized. For example, the sterilization may be via irradiation with UV light
Data Source
AI summary
The present disclosure provides chimeric surfaces. The chimeric surfaces may be thin films. In various embodiments, the thin films may be disposed on a substrate. Articles of manufacture may have one or more chimeric surfaces. Also disclosed are methods of making organoids from cancer cells and methods of determining whether a subject has cancer. The thin films may be formed from one or more siloxanes and one or more lubricants.