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Related Experiment Video

Updated: Jun 26, 2026

A Galleria mellonella Oral Administration Model to Study Commensal-Induced Innate Immune Responses
06:32

A Galleria mellonella Oral Administration Model to Study Commensal-Induced Innate Immune Responses

Published on: March 21, 2019

Development of an Innovative Galleria mellonella Model for Ricin Poisoning.

Annabelle Garnier1, Emilie Tessier1, Arnaud Avril1

  • 1Unité Interaction Hôte-Pathogènes, Institut de Recherche Biomédicale des Armées, 91220 Brétigny sur Orge, France.

Toxins
|June 25, 2026
PubMed
Summary

The greater wax moth larva (Galleria mellonella) is a novel, ethical model for ricin poisoning research. This study shows its sensitivity to ricin and its potential for testing new antitoxin therapies.

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Area of Science:

  • Toxicology
  • Invertebrate models
  • Biodefense

Background:

  • Ricin, a toxin from Ricinus communis seeds, is a potential bioweapon.
  • Current ricin poisoning treatments and prophylaxis are limited.
  • Vertebrate animal models are traditionally used for countermeasure assessment.

Purpose of the Study:

  • To evaluate Galleria mellonella larvae as an alternative model for ricin toxicity testing.
  • To determine the sensitivity of G. mellonella larvae to different ricin cultivars.
  • To assess the efficacy of a monoclonal antibody in mitigating ricin toxicity in G. mellonella.

Main Methods:

  • Larval injection with varying doses of different ricin cultivars.
  • Monitoring of larval mortality and a comprehensive health index score.
Keywords:
Galleria mellonellacultivarspoisoning modelricintherapeutic screening model

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Galleria mellonella as an Antimicrobial Screening Model
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Galleria mellonella as an Antimicrobial Screening Model

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Last Updated: Jun 26, 2026

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Galleria mellonella as an Antimicrobial Screening Model
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Published on: October 11, 2024

  • Assessment of health index based on survival, melanization, mobility, and cocoon formation.
  • Evaluation of therapeutic efficacy using a monoclonal antibody treatment.

    • Main Results:

    • G. mellonella larvae exhibited dose- and cultivar-dependent mortality.
    • A significant reduction in larval mortality was observed when treated with a monoclonal antibody prior to ricin exposure.
    • Health index scoring revealed decreased larval well-being correlating with ricin exposure.

    Conclusions:

    • Galleria mellonella larvae serve as a sensitive, ethical, and cost-effective model for studying ricin toxicity.
    • This invertebrate model is suitable for rapid screening of potential therapeutic interventions against ricin poisoning.
    • The findings support the use of G. mellonella in biodefense research for evaluating ricin countermeasures.