Focusing forward genetics: a tripartite ENU screen for neurodevelopmental mutations in the mouse
R W Stottmann1, J L Moran, A Turbe-Doan
1Division of Genetics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA.
Genetics
|April 26, 2011
Summary
Researchers used ENU mutagenesis in mice to identify genes controlling mammalian forebrain development. This genetic screen successfully identified mutations affecting neurodevelopment, including in the Scrib and Caspase-3 genes.
Area of Science:
- Neuroscience
- Genetics
- Developmental Biology
Background:
- Mammalian forebrain development is genetically controlled, with mutations linked to cortical malformations.
- Understanding genes in neural development is crucial for human disease research.
Purpose of the Study:
- To identify genes controlling mammalian forebrain development using a forward genetic screen.
- To investigate mutations affecting neurodevelopment in mice.
Main Methods:
- Utilized ENU mutagenesis in Mus musculus, focusing on neurodevelopmental mutations.
- Incorporated morphological/histological examination, a retinoic acid response element-lacZ reporter, and a sensitizing locus (Lis1/Pafah1b1).
Main Results:
- Recovered and mapped eight monogenic mutations, with seven impacting neurodevelopment.
- Identified causal genes for four mutations, detailing mutations in Scribbled homolog (Scrib) and Caspase-3 (Casp3).
Conclusions:
- Refined ENU mutagenesis is an efficient approach for studying neurodevelopment.
- Forward genetic experiments are highly productive for investigating the developing mammalian nervous system.
