Bioactive Peptides Targeting Insect GPCRs for Safer Pest Control

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Solution Overview

Problem

Current methods for controlling western flower thrips (WFT) and spotted-wing drosophila (SWD) rely heavily on chemical insecticides, which pose health and environmental risks and contribute to resistance development, necessitating the development of environmentally friendly alternatives.

Innovation Solution

Development of synthetic bioactive peptides derived from insect neuropeptides that bind to G-Protein-coupled receptors (GPCRs) to repel, control, or deter these pests, which can be applied directly to plants or combined with bait materials.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If chemical insecticides are used to control thrips and drosophila pests, then pest control effectiveness is improved, but health and environmental safety deteriorates and insecticide resistance develops

Engineering Contradiction:

Improvepest control effectivenessVSAvoidhealth and environmental safety

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical parameter from conventional insecticides to bioactive peptides with specific amino acid sequences. These peptides are designed to bind selectively to insect GPCRs, achieving pest control through biological specificity rather than broad-spectrum chemical toxicity, thereby maintaining effectiveness while improving safety profiles

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent introduces bioactive peptides as intermediary substances that mediate between the controller and the pest. These peptides act as selective agonists or antagonists of insect GPCRs, providing a targeted control mechanism that avoids the non-specific harmful effects of conventional insecticides on human health and the environment

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If chemical insecticides are used continuously to control pests, then pest control effectiveness is improved, but development of insecticide resistance worsens

Engineering Contradiction:

Improvepest control effectivenessVSAvoidinsecticide resistance

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent changes the mode of action parameter from conventional insecticide mechanisms to neuropeptide-GPCR interactions. This fundamental parameter change targets essential physiological processes in insects, creating control agents that are less susceptible to resistance development compared to traditional insecticides

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent develops peptides that can function as both agonists and antagonists of GPCRs, providing multi-functional control capabilities. This versatility allows for different control strategies (disruption vs. mimicry of natural signals) that can be deployed to manage resistance development

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Object-affected harmful factors

If synthetic bioactive peptides are developed from insect neuropeptides, then environmental safety is improved, but control effectiveness against multiple pest species may be limited

Engineering Contradiction:

Improveenvironmental safetyVSAvoidbroad-spectrum control capability

Core Design Contradiction:

Object-affected harmful factorsVSAdaptability or versatility

Solution Approach 1:

The patent exploits the universality of GPCR signaling pathways across different insect species. By designing peptides that target conserved GPCR structures and mechanisms, the invention achieves broad-spectrum activity against diverse pests including thrips, drosophila, and other insects, while maintaining the environmental safety of bioactive peptides

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent applies local quality by designing peptides with specific amino acid sequences tailored to target particular GPCR subtypes in different pest species. This allows optimization of activity for specific target pests while maintaining overall broad-spectrum capability through a family of related peptide designs

Inventive Principle:

Principle #3Local quality

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 peptides effectively reduce pest infestation without harming human health or the environment, can be used in combination with conventional insecticides to lower chemical doses, and offer a biologically based control method.

Implementation Method 1

synthetic bioactive peptides derived from insect neuropeptides that bind to G-Protein-coupled receptors (GPCRs) to repel, control, or deter these pests

Methodology Applied

Scientific EffectG-Protein-coupled receptor binding:

Data Source

PatentUS20260047574A1Bioactive peptides for controlling insects

Publication Date: 2026.02.19 THE GOVERNMENT OF THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY DEPARTMENT OF HEALTH & HUMAN SERVICES

AI summary

Disclosed are synthetic peptides developed from the western flower thrip (Frankliniella occidentalis), spotted-wing drosophila (Drosophila suzukii), diamondback moth (Plutella xylostella), lygus (Lygus Hesperus), and other insect neuropeptides. Peptides disclosed can be used to repel, control, or deter Frankliniella spp., Drosophila spp., Plutella ssp., and Lygus ssp., including Frankliniella occidentalis, Drosophila suzukii, Plutellaxylostella, and Lygus Hesperus from feeding on agricultural and horticultural plants. The peptides can be combined with bait materials, or applied directly to plants or areas.