Cell Biology JoVE (Open Access) Citable · DOI

Enumeration of Neural Stem Cells Using Clonal Assays

Name: Enumeration of Neural Stem Cells Using Clonal Assays
Uploaded: 2026-07-14
Duration: 10 min 32 s
Description: Neural stem cells (NSCs) have the ability to self-renew and generate the three major neural lineages — astrocytes, neurons and oligodendrocytes. ...

DOI: 10.3791/54456-v

What you'll learn

✓ Perform clonal neurosphere culture under limiting dilution conditions
✓ Prepare neurosphere-conditioned medium for optimal cell growth
✓ Differentiate clonal neurospheres and identify neural lineages
✓ Calculate neural stem cell frequency from clonal assay data

Protocol

Biopharma Insights Neural stem cells (NSCs) refer to cells which can self-renew and differentiate into the three neural lineages. Here, we describe a protocol to determine NSC frequency in a given cell population using neurosphere formation and differentiation under clonal conditions.

Difficulty

advanced

Total time

~7-10 days per sample (includes culture expansion, differentiation, and fixation)

Model organism

Neural stem cells (NSCs) — source organism-dependent (typically derived from mouse or human)

Biosafety

BSL-1

Steps

Culture clonal sample neurospheres

Establish and maintain neural stem cell neurospheres under clonal conditions using limiting dilution to ensure single-cell origin. Cells are cultured in appropriate medium to promote self-renewal.

▶ 00:50

Prepare neurosphere-conditioned medium

Collect and process medium conditioned by neurosphere cultures to obtain growth factors and signaling molecules that support NSC proliferation and differentiation in subsequent assays.

▶ 02:07

Transfer sample neurospheres to chambered coverslip

Carefully plate individual or clonal neurospheres onto a 50-well-chambered coverslip for controlled differentiation and microscopic analysis of single clonal populations.

▶ 04:20

Differentiate sample neurospheres

Remove growth factor support and culture neurospheres under conditions promoting differentiation into the three neural lineages (neurons, astrocytes, oligodendrocytes).

▶ 06:25

Fix differentiated neurospheres

Chemically preserve differentiated neurosphere samples using appropriate fixation to enable immunofluorescence staining and morphological analysis.

▶ 07:18

Enumerate NSC frequency from clonal data

Quantify neural lineage markers in fixed clonal neurospheres and calculate the frequency of neural stem cells in the original population based on differentiation patterns.

▶ 08:16

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