Related Experiment Video
Updated: Oct 18, 2025
Electroantennography-based Bio-hybrid Odor-detecting Drone using Silkmoth Antennae for Odor Source Localization
Published on: August 27, 2021
Insect odorant receptor-based biosensors: Current status and prospects
Jamal Ahmed Cheema1, Colm Carraher2, Natalie O V Plank3
1Polymer Biointerface Centre, School of Chemical Sciences, The University of Auckland, Auckland 1023, New Zealand; MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6140, New Zealand; The New Zealand Institute for Plant and Food Research Limited, Private Bag 92169, Auckland 1142, New Zealand.
Portable artificial noses are challenging due to the complexity of smell. Insect odorant receptors (ORs) show promise for highly sensitive and selective detection of volatile organic compounds, overcoming limitations of current sensors.
Area of Science:
- Biotechnology
- Biosensor development
- Olfactory receptor research
Background:
- The human sense of smell is complex, involving thousands of volatile organic compounds.
- Current portable chemical sensors lack the sensitivity and selectivity of natural olfactory systems.
- Insect odorant receptors (ORs) offer a promising avenue for advanced artificial olfactory devices.
Purpose of the Study:
- To review the current status and future prospects of insect odorant receptor-based biosensors.
- To highlight the potential of insect ORs in overcoming limitations of existing chemical sensors.
- To explore advancements in insect OR biosensor development and their applications.
Main Methods:
- Exploration of insect OR structure, ligand binding, and biosensor development.
- Utilizing insect ORs in various display formats: cells, lipid bilayers, liposomes, and nanodiscs.
- Coupling insect OR biosensors with optical (fluorescence) and electrical (FET, EIS) transduction techniques.
Main Results:
- Demonstrated ultrasensitive and highly selective detection of volatile organic compounds using insect ORs.
- Successfully expressed, purified, and presented insect ORs in stable formats.
- Validated insect OR biosensors with diverse transduction methodologies.
Conclusions:
- Insect OR-based biosensors represent a significant advancement in artificial olfaction.
- These biosensors offer a path towards portable, sensitive, and selective smell detection.
- Further research into insect ORs holds great potential for future olfactory technologies.
