Odorant Receptor Identification via Odor Response Gene Expression
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Solution Overview
Problem
Current methods are inadequate for determining which odorant receptor(s) are activated by a given scent, making it difficult to replicate or improve scents in fragrance and food industries.
Innovation Solution
The discovery of a suite of genes whose expression is altered when an odorant receptor is activated allows for the development of methods to identify which odorant receptors perceive a scent, enabling the screening of scents to activate specific receptors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional methods are used to determine odorant receptor activation, then the process is simple, but the measurement precision is insufficient to identify which odorant receptors are activated by a given scent
Solution Approach 1:
The patent uses odor response genes as intermediary markers to indirectly identify activated odorant receptors. Instead of directly measuring receptor activation, the method measures gene expression changes in olfactory sensory neurons, which serve as reliable proxies for receptor activation status. This intermediary approach enables precise identification while maintaining operational simplicity.
Solution Approach 2:
The patent replaces direct physiological measurement of odorant receptor activation with molecular biology-based gene expression analysis. By substituting the mechanical/physiological measurement approach with a molecular assay (measuring mRNA expression of odor response genes), the method achieves higher precision without significantly increasing operational complexity.
2Measurement precision
If single cell sequencing is used to measure odor response gene expression, then the measurement precision improves, but the device complexity and cost increase
Solution Approach 1:
The patent segments the olfactory epithelium into individual olfactory sensory neurons and measures gene expression at the single-cell level. This segmentation allows precise detection of odor response gene expression in each neuron, enabling identification of activated odorant receptors. The single-cell approach provides the necessary precision while the methodological framework keeps the complexity manageable through standardized sequencing protocols.
3Productivity
If methods to identify activated odorant receptors are developed, then the productivity of scent replication improves, but the difficulty of detecting and measuring increases
Solution Approach 1:
The patent establishes a feedback mechanism where odor response gene expression serves as a measurable indicator of odorant receptor activation. By monitoring gene expression changes in olfactory sensory neurons, the method provides direct feedback about which receptors are activated by a given scent. This feedback loop enables efficient scent replication by allowing researchers to identify active receptors and design scents accordingly, while the gene expression measurement remains relatively straightforward compared to direct receptor measurement.
Data Source
AI summary
Scents are perceived by the olfactory sensory neurons (OSNs) that line the upper nasal cavity. Each OSN expresses one odorant receptor, and these odorant receptors contact the scent molecules. Methods for determining which odorant receptor(s) are activated by a scent are lacking, making it difficult to replicate or improve scents. The technology as disclosed herein refers to methods relating to activating odor response genes found in olfactory sensory neurons after the neurons are exposed to at least one volatilized chemical compound.