Flow Cytometry-Based Protocols for the Mouse Subependymal Neurogenic Niche Phenotyping

Area of Science:

• Neuroscience
• Regenerative Medicine
• Cell Biology

Background:

• The adult rodent subependymal zone (SEZ) is a key neurogenic niche with diverse cell populations.
• Understanding the heterogeneity of neural stem cells (NSCs) and their activation states is crucial for regenerative medicine.

Purpose of the Study:

• To provide a detailed flow cytometry protocol for classifying and isolating the complete neurogenic lineage within the SEZ.
• To enable functional assays of cell cycling dynamics and quiescence-activation transitions in NSCs.

Main Methods:

• A versatile, validated flow cytometry protocol for SEZ cell classification and isolation.
• The protocol does not require reporter mice and is adaptable for various fluorescence needs and cell targets.
• Incorporation of 5-ethynyl-20-deoxyuridine (EdU) allows for cell cycle analysis.

Main Results:

• The protocol successfully classifies and isolates three distinct NSC fractions: quiescent, primed, and activated.
• It enables the identification and isolation of a broad range of SEZ cell types, including differentiated cells like endothelial cells, oligodendrocytes, and microglia.
• The method facilitates the study of cell cycling heterogeneity and NSC activation dynamics.

Conclusions:

• This flow cytometry approach offers a comprehensive tool for dissecting the cellular complexity of the SEZ neurogenic niche.
• It provides a foundation for further research into brain regeneration and the functional states of neural stem cells.