Taste Receptor Internalization Assay for High-Throughput Screening
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Solution Overview
Problem
Current methods for identifying taste receptor modulators are inefficient in high-throughput assays and lack robustness in quantifying receptor internalization, particularly for bitter and sweet taste receptors.
Innovation Solution
The 'Ring Assay' uses specific antibodies and detectable labels to quantify the internalization of taste receptors like T2R14 and T1R2, enabling the identification of bitter and sweet taste modulators through high-content imaging, suitable for high-throughput screening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional methods are used to measure receptor internalization, then the assay can be performed, but the throughput is low and the quantification is not robust
Solution Approach 1:
The assay segments the measurement process into distinct components: nuclear staining with DAPI for cell counting and compartment differentiation, receptor staining with fluorescent antibodies for localization, and image analysis for quantification. This segmentation enables automated high-throughput processing while maintaining robust quantification through separate, optimized measurement steps.
Solution Approach 2:
The patent replaces manual microscopy and subjective scoring with automated image analysis systems that objectively quantify receptor internalization. The system automatically detects ring-shaped patterns, counts cells, and calculates internalization percentages, enabling high-throughput screening with consistent, reproducible measurements.
2Measurement precision
If manual microscopy methods are used, then receptor internalization can be visualized, but the assay lacks high-throughput capability
Solution Approach 1:
The patent creates fluorescent copies of the receptor proteins through antibody staining, which can be detected and quantified by automated imaging systems. This copying approach allows precise visualization of receptor localization while enabling high-throughput analysis, as the fluorescent signals can be captured and processed by automated systems rather than requiring manual microscopy.
Solution Approach 2:
The assay utilizes fluorescent color changes to detect receptor internalization. The DAPI stain provides blue nuclear staining for compartment differentiation, while the fluorescent antibodies provide green or red signals for receptor localization. These color changes enable automated detection and quantification, significantly increasing throughput while maintaining measurement precision.
3Productivity
If the assay is designed for high-throughput screening, then productivity increases, but the robustness of quantification may be compromised
Solution Approach 1:
The assay incorporates feedback mechanisms through automated image analysis that continuously monitors and adjusts quantification parameters. The system analyzes ring-shaped patterns, counts cells, and calculates internalization percentages with consistent criteria, ensuring robust quantification even at high throughput. Quality control measures and standardized protocols maintain reliability while enabling efficient screening.
Solution Approach 2:
The patent optimizes various parameters including fluorescent antibody concentrations, incubation times, image acquisition settings, and analysis thresholds to ensure robust quantification at high throughput. These parameter optimizations allow the assay to maintain both productivity and reliability, with standardized protocols ensuring consistent results across large numbers of samples.
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 Ring Assay provides a robust and accurate method for measuring receptor internalization, effectively identifying potential bitter blockers and sweet molecules, enhancing the efficiency of taste receptor modulation screening.
Implementation Method 1
A first detectable label, specific for nucleic acid (e.g., DAPI, Hoechst 33342, DRAQ5, DRAQ7, DRAQ9), is used to label cell nuclei
Implementation Method 2
Antibodies which specifically bind to a taste receptor are used in conjunction with secondary antibodies conjugated with a second detectable label
Data Source
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AI summary
This disclosure provides a taste receptor internalization assay useful for identifying taste modulators.