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Isolation and Culture of Embryonic Mouse Neural Stem Cells
Published on: November 11, 2018
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Generation of thalamic neurons from mouse embryonic stem cells
Atsushi Shiraishi1,2,3, Keiko Muguruma4,3, Yoshiki Sasai1
1Laboratory for Organogenesis and Neurogenesis, RIKEN Center for Developmental Biology, Kobe 650-0047, Japan.
Development (Cambridge, England)
|February 22, 2017
Summary
Researchers generated thalamic neurons from mouse embryonic stem cells (mESCs) by optimizing culture conditions. This study identifies key molecular factors for in vitro thalamic neuron development.
Area of Science:
- Neuroscience
- Developmental Biology
- Stem Cell Research
Background:
- The thalamus is vital for sensory and motor processing, relaying information to the neocortex.
- Thalamic development occurs in the caudal forebrain, but its molecular drivers remain unclear.
- Understanding thalamic differentiation is crucial for neuroscience and regenerative medicine.
Purpose of the Study:
- To identify the minimal molecular requirements for generating thalamic neurons in vitro from mouse embryonic stem cells (mESCs).
- To establish a reliable method for producing functional thalamic neurons for research and potential therapeutic applications.
Main Methods:
- Modified a standard protocol for self-organizing cultures of mESCs.
- Utilized specific concentrations of insulin and a MAPK/ERK kinase inhibitor to promote caudal forebrain identity.
- Employed Bone Morphogenetic Protein 7 (BMP7) to increase thalamic precursor populations.
- Analyzed gene and protein expression (Otx2, Pax6, Tcf7l2, Gbx2, Olig3, vGlut2, VGF).
- Assessed neuronal function through organotypic cultures and subcortical transplantation.
Main Results:
- Successfully generated thalamic neurons from mESCs by modifying differentiation protocols.
- Identified low-dose insulin and a MAPK/ERK inhibitor as crucial for caudal forebrain marker expression (Otx2, Pax6).
- Confirmed BMP7's role in expanding key thalamic precursors (Tcf7l2+/Gbx2+ and Tcf7l2+/Olig3+).
- mESC-derived thalamic neurons expressed mature neuronal markers (vGlut2, VGF) and extended axons to cortical targets.
Conclusions:
- Established a method for the in vitro generation of thalamic neurons using mESCs.
- Identified specific molecular factors (insulin, MAPK/ERK inhibitor, BMP7) sufficient for inducing thalamic neuron fate.
- Demonstrated the functional capacity of in vitro-derived thalamic neurons, including axonal projection.
- Provided new insights into the molecular mechanisms of thalamic development.
