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Cortical Neurogenesis: Transitioning from Advances in the Laboratory to Cell-Based Therapies
Published on: July 19, 2007
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The evolution of early neurogenesis
Volker Hartenstein1, Angelika Stollewerk2
1Department of Molecular Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, CA 90095, USA.
Developmental Cell
|February 25, 2015
Summary
Early neurogenesis involves progenitor cell origin, patterning, proliferation, and movement, controlled by conserved genes. This review explores these mechanisms across metazoans to understand the ancestral bilaterian developmental toolkit.
Area of Science:
- Developmental biology
- Neuroscience
- Evolutionary biology
Background:
- Metazoan nervous systems arise from embryonic patterning.
- Neural progenitor generation and migration are key processes.
- Understanding these mechanisms is crucial for evolutionary insights.
Purpose of the Study:
- To divide early neurogenesis into discrete, conserved elements.
- To review neurogenetic mechanisms across metazoan clades.
- To establish a framework for studying the evolution of the bilaterian developmental toolkit.
Main Methods:
- Comparative review of neurogenesis across metazoan clades.
- Analysis of conserved gene cassettes controlling progenitor behavior.
- Conceptual framework development for evolutionary developmental biology questions.
Main Results:
- Early neurogenesis comprises distinct stages: origin, pattern, proliferation, and movement.
- Conserved gene cassettes regulate these neurogenetic processes.
- Mechanisms vary across metazoan groups, suggesting evolutionary divergence.
Conclusions:
- Understanding conserved neurogenetic elements is key to reconstructing ancestral developmental processes.
- Specific mechanisms likely contributed to the bilaterian ancestor's toolkit.
- Further research can elucidate which mechanisms evolved later in metazoan evolution.
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