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In vitro Mutagenesis

In vitro Mutagenesis

To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.

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Related Experiment Video

Updated: Jun 21, 2026

Measuring Microbial Mutation Rates with the Fluctuation Assay

Measuring Microbial Mutation Rates with the Fluctuation Assay

Published on: November 28, 2019

Bacterial Reverse Mutation Test of Verbenalin.

Hye Jeong Shin¹, Yi Gun Lim¹, Ji Su Ha²

¹Department of Korean Medicine, College of Korean Medicine, Woosuk University, Jeonju, Republic of Korea.

Journal of Pharmacopuncture

|January 11, 2023

Summary

Verbenalin, found in Cornus officinalis, was tested for mutagenicity using the Ames test. Results showed verbenalin is not mutagenic, indicating safety, though further toxicity studies are recommended.

Keywords:

dementia mutagenicity test verbenalin

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Area of Science:

Pharmacology
Toxicology
Natural Products Chemistry

Background:

Verbenalin is a bioactive compound present in medicinal herbs like Cornus officinalis and Verbena officinalis.
Assessing the safety profile of natural compounds is crucial for their potential therapeutic applications.

Purpose of the Study:

To evaluate the mutagenic potential of verbenalin.
To determine if verbenalin poses a risk of causing genetic mutations.

Main Methods:

A bacterial reverse mutation assay (Ames test) was employed.
Tests were performed using Salmonella typhimurium and Escherichia coli strains.
Experiments were conducted both with and without metabolic activation to simulate in vivo conditions.

Main Results:

Verbenalin did not induce a significant increase in colony numbers compared to controls across all tested strains.
No growth inhibition or precipitation of verbenalin was observed at various concentrations, irrespective of metabolic activity.
The compound demonstrated a lack of mutagenic activity in the bacterial test systems.

Conclusions:

Verbenalin exhibited no mutagenicity in the conducted Ames tests.
These findings suggest verbenalin is not genotoxic.
Further comprehensive toxicity assessments, including repeated oral toxicity, reproductive toxicity, and carcinogenicity studies, are warranted to fully establish its safety profile.