Myelination competent conditionally immortalized mouse Schwann cells

Area of Science:

• Neuroscience
• Cell Biology
• Genetics

Background:

• In vivo mouse models exist for peripheral nervous system research.
• Limited Schwann cell growth capacity hinders in vitro biochemical studies.
• Schwann cells are crucial for peripheral nerve myelination and health.

Purpose of the Study:

• To generate conditionally immortalized Schwann cell lines for enhanced in vitro experimental manipulation.
• To overcome limitations in studying peripheral nerve processes in vitro.
• To create a valuable tool for research into demyelinating diseases.

Main Methods:

• Isolated Schwann cells from H-2Kb-tsA58 transgenic mice carrying a temperature-sensitive SV40 large T oncogene.
• Utilized interferon gamma (IFNgamma) inducible H-2Kb promoter for conditional immortalization.
• Cultured cells at 33°C for immortalization and 37°C (non-permissive) for differentiation.
• Demonstrated genetic manipulation by creating a stable eGFP expressing cell line.

Main Results:

• Achieved conditional immortalization of Schwann cells at 33°C.
• Observed reduced growth and upregulation of p75(NGFR) at the non-permissive temperature (37°C).
• Confirmed regained non-immortalized properties and differentiation into myelin-forming cells on dorsal root ganglia neurons.

Conclusions:

• Conditionally immortalized Schwann cell lines are robust tools for in vitro peripheral nerve research.
• These cell lines facilitate genetic manipulation and study of Schwann cell biology.
• The derived cell lines are valuable for investigating demyelinating diseases in vitro.