Enu Mutagen
Enu Mutagen - Related Videos
01:25
Mutagenicity and Carcinogenicity
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2023
Mutagenicity and carcinogenicity refer to the ability of drugs to cause genetic defects and induce cancer, respectively. The International Agency for Research on Cancer (IARC) classifies agents into four groups based on their carcinogenic potential. Group 1 agents are known human carcinogens; group 2A agents are probably carcinogenic to humans; group 3 agents lack data to support their role in carcinogenesis; and group 4 includes agents for which data support that they are not likely to be...
10:07
A Standard Methodology to Examine On-site Mutagenicity As a Function of Point Mutation Repair Catalyzed by CRISPR/Cas9 and SsODN in Human Cells
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Cited by 5 •
2017
This protocol outlines the workflow of a CRISPR/Cas9-based gene editing system for the repair of point mutations in mammalian cells. Here, we use a combinatorial approach to gene editing with a detailed follow-on experimental strategy for measuring indel formation at the target site—in essence, analyzing onsite mutagenesis.
14:45
Transgenic Rodent Assay for Quantifying Male Germ Cell Mutant Frequency
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Cited by 28 •
2014
De novo mutations in the male germline may contribute to adverse health outcomes in subsequent generations. Here we describe a protocol for the use of a transgenic rodent model for quantifying mutations in male germ cells induced by environmental agents.
14:56
A Genetic Screen to Isolate Toxoplasma gondii Host-cell Egress Mutants
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Cited by 18 •
2012
Forward genetics is a powerful method to unravel the molecular level of how Toxoplasma egresses from its host cell. Protocols are provided to chemically mutagenize parasites, enrich for mutants with defects in induced egress, and validate the phenotype of cloned mutants.
02:33
Fly Climbing Assay: A Method to Test General Locomotion in Drosophila melanogaster
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2023
This video describes a simple method to quantify fly locomotion and shows the climbing assay performed. The fly climbing assay is a general test of motor function which relies on a negative geotaxis response.
FAQs
ENU transfers ethyl groups to DNA bases, with guanine particularly important because altered base-pairing can produce mispairing during replication. When such changes arise in germ cells, they can pass into subsequent generations as heritable variants. This mechanism gives investigators stable genetic differences that can be connected to altered immune or infection-related traits.
The predominance of single-nucleotide substitutions allows researchers to examine how individual genetic changes affect gene function. Rather than producing only broad genetic disruption, this variation can reveal alterations in specific genes or pathways. In immunology and infection research, those changes may help distinguish regulators of host defense, inflammation, immune-cell development, or vaccine responses.
Phenotype-to-genotype analysis connects an observable trait with the inherited mutation associated with it. Investigators can first recognize an unusual immune or infection-related phenotype, then identify the genetic change that may explain it. This linkage turns a screening result into a mechanistic lead, supporting further study of the gene and the pathway it regulates.
In the described workflow, researchers generate diverse heritable mutations, breed the affected animals carefully, and examine offspring for altered traits. They then identify animals showing differences in pathogen susceptibility, immune-cell development, inflammation, or vaccine responses and connect those phenotypes to their genotypes. The resulting gene-trait relationships guide mechanistic investigation.
ENU screens can expose inherited changes associated with susceptibility or resistance to pathogens, abnormal immune-cell development, altered inflammatory responses, or differences in vaccine responses. These outcomes provide entry points for studying how genes influence host defense. The method therefore supports both infection-focused questions and broader investigations of immune-system regulation.
Controlled handling is essential because ENU exposure requires careful management during experimental work. Careful breeding is equally important because the mutations of interest must be transmitted and tracked across generations. Maintaining this control helps researchers associate an observed phenotype with an inherited genetic change, while supporting reliable interpretation of immune and infection-related screening results.