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Updated: Oct 14, 2025
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Stem cell-like Xenopus Embryonic Explants to Study Early Neural Developmental Features In Vitro and In Vivo
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Temporal and spatial transcriptomic dynamics across brain development in Xenopus laevis tadpoles
Aaron C Ta1,2, Lin-Chien Huang1, Caroline R McKeown1
1Neuroscience Department and The Dorris Neuroscience Center, The Scripps Research Institute, La Jolla, CA 92037, USA.
G3 (Bethesda, Md.)
|November 9, 2021
Summary
Amphibian metamorphosis involves significant brain changes. Gene expression analysis reveals altered neural progenitor cell proliferation and differentiation, offering insights into brain development during this critical transitional period.
Area of Science:
- Developmental biology
- Neuroscience
- Genomics
Background:
- Amphibian metamorphosis drives substantial brain reorganization.
- Understanding gene expression dynamics is key to deciphering brain development during this phase.
Purpose of the Study:
- To analyze differential gene expression in the Xenopus laevis tadpole brain during metamorphosis.
- To investigate temporal and spatial gene expression patterns in the developing brain.
Main Methods:
- Differential gene expression analysis of the Xenopus laevis tadpole brain.
- Analysis across developmental stages in the midbrain.
- Analysis across brain regions at a single developmental stage.
Main Results:
- Upregulation of neural progenitor cell proliferation genes and markers in the midbrain.
- Decreased expression of cell cycle timing regulators suggests cell cycle lengthening.
- Similar neural progenitor populations across brain regions at metamorphosis onset.
- Distinct neurogenesis regulation in the spinal cord.
Conclusions:
- Metamorphosis involves dynamic regulation of neural progenitor cell proliferation and differentiation in the tadpole brain.
- Comparative analysis reveals conserved developmental trajectories between amphibians and mammals.
- Gene expression profiling illuminates molecular events underlying brain development during amphibian metamorphosis.
