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Genetic Manipulation of the Mouse Developing Hypothalamus through In utero Electroporation
Published on: July 24, 2013
A genomic atlas of mouse hypothalamic development.
Tomomi Shimogori1, Daniel A Lee, Ana Miranda-Angulo
1RIKEN-BSI, 2-1 Hirosawa, Wako-shi, Saitama, Japan. tshimogori@brain.riken.jp
Nature Neuroscience
|May 4, 2010
Summary
Researchers mapped genes in the developing hypothalamus to understand its molecular pathways. They identified key markers and found Sonic Hedgehog (Shh) is crucial for anterior hypothalamic development.
Area of Science:
- Neuroscience
- Developmental Biology
- Genetics
Background:
- The hypothalamus regulates essential survival behaviors like temperature, feeding, and circadian rhythms.
- Molecular mechanisms governing hypothalamic development remain largely uncharacterized.
Purpose of the Study:
- To identify genes crucial for developing mouse hypothalamus.
- To create a molecular atlas of hypothalamic neurogenesis.
- To investigate the role of Sonic Hedgehog (Shh) in hypothalamic patterning.
Main Methods:
- Microarray analysis across 12 developmental time points in mice.
- Developmental in situ hybridization for 1,045 dynamically expressed genes.
- Analysis of Shh-deleted mouse models for hypothalamic defects.
Main Results:
- Identification of stable markers for major hypothalamic nuclei throughout neurogenesis.
- Construction of a detailed molecular atlas of the developing hypothalamus.
- Demonstration that Shh is essential for anterior hypothalamic patterning.
Conclusions:
- The study provides a valuable resource for understanding hypothalamic development and function.
- Identified genes and markers will facilitate further research into hypothalamic connectivity, physiology, and disease.
- Sonic Hedgehog signaling is critical for establishing anterior hypothalamic structure.
