High-Throughput Olfactory Receptor Assay for Allosteric Modulator Screening
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Solution Overview
Problem
Current methods are inadequate for rapidly and reliably identifying olfactory receptors activated by specific odorant and aroma compounds, and there is a need for effective assays to characterize volatile modulators of olfactory receptor activity to enhance or inhibit fragrance perceptions.
Innovation Solution
A high-throughput assay system using isolated cells expressing specific olfactory receptors, where a first agonist compound activates the receptor, and a second compound enhances its activity synergistically, allowing for the identification of positive allosteric modulators through structure-activity relationship analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional deorphanization methods are used to identify odorant-receptor pairs, then identification can be performed, but the process is slow and unreliable, identifying only about 12% of human ORs (48 out of 400)
Solution Approach 1:
The patent replaces traditional mechanical/cultural deorphanization methods with a high-throughput assay system using isolated cells expressing specific olfactory receptors. This allows rapid, reliable identification of odorant-receptor pairs by systematically testing compounds against multiple receptor types in a controlled laboratory setting, dramatically increasing both productivity and reliability of identification.
Solution Approach 2:
The patent changes the parameters of the identification process by using a standardized high-throughput assay system with isolated cells, specific agonist compounds, and structured testing protocols. This systematic approach with controlled parameters enables rapid and reliable identification of positive allosteric modulators across multiple odorant-receptor pairs.
2Measurement precision
If in vitro methods are used to identify ligands for human ORs, then receptor-ligand interactions can be characterized, but the physiological relevance of most identified ligands has not been tested
Solution Approach 1:
The patent uses isolated cells expressing specific olfactory receptors as an intermediary system that bridges in vitro identification and physiological relevance testing. These cells provide a controlled environment for precise ligand identification while maintaining functional relevance, allowing systematic testing of both agonists and modulators with known physiological context.
Solution Approach 2:
The patent incorporates feedback mechanisms by testing whether identified ligands and modulators produce expected physiological responses. The assay system provides feedback on the functional activity and relevance of identified compounds, allowing verification of physiological relevance alongside precise identification.
3Loss of information
If a comprehensive screen of all odorants against all ORs is performed, then complete receptor activation data could be obtained, but the complexity and time required would be excessive
Solution Approach 1:
The patent segments the comprehensive screening task into manageable units by testing specific agonist compounds against specific olfactory receptor types in a systematic high-throughput assay. This segmentation allows complete data to be obtained for each receptor-compound pair efficiently, avoiding the time-consuming approach of testing all odorants against all ORs simultaneously.
Solution Approach 2:
The patent performs preliminary identification of positive allosteric modulators before final characterization. By first identifying compounds that enhance receptor activity in the high-throughput assay, the system efficiently narrows down candidates for further physiological relevance testing, reducing overall time while maintaining data completeness.
4Loss of information
If structure-activity relationship analysis is performed to identify modulators, then useful pharmacological data can be obtained, but the process requires multiple testing steps and compound analysis
Solution Approach 1:
The patent designs a universal high-throughput assay system that can characterize multiple types of compounds (agonists, positive allosteric modulators, negative allosteric modulators) using the same basic platform. This multi-functional system obtains comprehensive pharmacological data through standardized testing protocols, reducing the need for separate specialized assays and simplifying overall system complexity.
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
This approach enables the efficient identification of compounds that enhance or inhibit olfactory receptor activity, improving fragrance perception and sensitivity in perfumery applications.
Implementation Method 1
a first compound that binds to the olfactory receptor and that activates the olfactory receptor
Implementation Method 2
at least one second compound that binds to the receptor non-competitively relative to the first compound and that enhances the activity of the receptor exposed to the first compound
Implementation Method 3
wherein the activity of the receptor is synergistically enhanced by the combination of the first compound and the second compound
Data Source
AI summary
The various aspects presented herein relate to the perfumery industry. More particularly, the various aspects presented herein relate to assays and methods for screening and identifying compositions and/or ingredients that intensify a subject's perception of target odorant compounds based on the use of particular olfactory receptors activated by the target odorant compound.