Granule Cell Precursors
Granule Cell Precursors - Related Videos
10:02
Ex Vivo Culture of Chick Cerebellar Slices and Spatially Targeted Electroporation of Granule Cell Precursors
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Cited by 4 •
2015
The cerebellar external granule layer is the site of the largest transit amplification in the developing brain. Here, we present a protocol to target genetic modification to this layer at the peak of proliferation using ex vivo electroporation and culture of cerebellar slices from embryonic Day 14 chick embryos.
16:01
Investigating Mast Cell Secretory Granules; from Biosynthesis to Exocytosis
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Cited by 9 •
2015
The goal of the present protocol was to develop a method that will allow functional genomic analyses of mast cell secretion. The protocol is based on quantitative assessment of the release of a fluorescent reporter gene cotrasfected with the gene of interest and real time analyses of the secretory granule's morphology.
08:11
Differentiation of Embryonic Stem Cells into Oligodendrocyte Precursors
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Cited by 28 •
2010
We describe a small molecule-based protocol for differentiation of mouse embryonic stem cells into oligodendrocyte precursor cells (OPCs). This protocol generates Olig2+NG2+ OPCs with high efficiency by 30 days of differentiation. We also describe a method to generate "spiking" OPCs that can fire action potentials.
27:44
Culture of Mouse Neural Stem Cell Precursors
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Cited by 38 •
2007
This video describes the method used for isolation of neuroprecursors from the developing cortex of embryonic mice. The procedure for removing embryos from the uterus, dissecting the cortical tissue, and digesting the isolated cerebral cortex is shown.
09:10
Ex Vivo Imaging of Postnatal Cerebellar Granule Cell Migration Using Confocal Macroscopy
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Cited by 8 •
2015
During postnatal cerebellum development, immature granule cells originating from the germinal zone exhibit distinct modalities of migration to reach their final destination and to establish neuronal networks. This protocol describes the preparation of cerebellar slices and the confocal macroscopic approach used to investigate the factors that regulate neuronal migration.
FAQs
In the developing cerebellum, Sonic hedgehog signaling activates GLI-dependent transcription, which supports expansion of granule cell precursors in the external germinal layer. This regulatory state keeps the cells proliferative while the cerebellum forms. The mechanism provides a developmental framework for examining how persistent pathway activity could preserve precursor-like growth in disease.
As signaling declines, the cells stop emphasizing expansion, migrate inward from the external germinal layer, and differentiate into granule neurons. This sequence connects a change in pathway activity with both location and cell state. Studying these transitions helps distinguish normal developmental progression from conditions in which progenitor proliferation remains active.
Abnormal activation can maintain a precursor-like proliferative state rather than allowing the normal transition toward migration and differentiation. In cancer research, this developmental disruption is associated with medulloblastoma, especially the SHH molecular subgroup. Granule cell precursors therefore offer a model for connecting altered developmental signaling with tumor initiation and neural-lineage malignancy.
Researchers can culture these cells and genetically manipulate them to test how developmental pathways influence proliferation, state transitions, and tumor-related behavior. Such experiments make it possible to compare altered signaling conditions with the developmental program seen in the cerebellum. The resulting system supports controlled studies of mechanisms that may be difficult to isolate in intact tissue.
Studies using granule cell precursors can examine how abnormal pathway activity may preserve precursor-like growth during tumor initiation. They can also investigate developmental signaling, identify potential therapeutic vulnerabilities, and connect cellular behavior with the SHH subgroup of medulloblastoma. These applications place tumor biology in the context of normal neural development rather than treating it as an isolated process.
Because the cells can be cultured and genetically manipulated, researchers can examine how changing relevant developmental signaling affects growth-related behavior and responses to treatment. Comparisons across experimental conditions may clarify whether a vulnerability depends on precursor state or pathway activity. This approach links treatment-response studies to the biology underlying SHH-associated medulloblastoma.