What microscope do UK neurodegeneration labs need for iPSC neurite outgrowth assays?
The question: “I have iPSC-derived neurons and I need to measure neurite length, branching and growth over time. Which microscope do I need?”
Neurite outgrowth is one of the most useful morphological readouts in neurodegeneration, neurotoxicity and regenerative-medicine research. It is slow, spatial and highly variable between cells, so the right imaging workflow combines good optics with automated tracing or high-content analysis.
High-content imaging of iPSC-derived neuronal cultures has become a standard approach, as reviewed in recent surveys of iPSC-based neurodegenerative disease modelling.
| Format | When to use it | Readout | Imaging approach |
|---|---|---|---|
| 2D fixed endpoint | Compound screening; batch histology | Total neurite length, branch points, cell count | High-content analysis (CX5/CX7) |
| 2D live time-lapse | Kinetics of the same neurons | Growth velocity, retraction, response time | EVOS M7000 + OSI-2 or similar incubator |
| Co-culture / myelination | Neuron-oligodendrocyte interaction | Myelin segment length, wrapping | Widefield or confocal; multiple channels |
| 3D hydrogel / organoid | Tissue-like context, axon outgrowth | 3D skeletonisation, penetration depth | Confocal / light-sheet for thick samples |
For plate-based neurite outgrowth screens, the CellInsight CX5 and CX7 platforms combine automated acquisition with neurite-tracing algorithms.
The EVOS M7000 with OSI-2 Onstage Incubator is a practical choice when you want to follow the same neurons over hours or days.
| Use case | CellInsight CX5 / CX7 | EVOS M7000 + OSI-2 |
|---|---|---|
| Compound screen across plates | ✓ Purpose-built | Manual, low throughput |
| Automated neurite tracing and branching | ✓ HCS Studio / neurite app | ImageJ/FIJI third-party |
| Longitudinal same-cell time-lapse | Possible with environmental module | ✓ Better benchtop fit |
| Live imaging environmental stability | Available as option | ✓ OSI-2 standardised |
| 3D organoid / thick gel imaging | Thin gels / transwells OK; no true 3D sectioning | Limited to thin matrices; confocal better for thick samples |
These references cover high-throughput iPSC neurite assays, developmental neurotoxicity screening, automated live-cell neurodegeneration imaging and HCA in iPSC models.
Current Protocols. A detailed protocol for a high-throughput neurite outgrowth assay using GFP-labeled iPSC-derived neurons, including culture, imaging and analysis steps.
View DOINeuroToxicology. Evaluates chemical compounds that inhibit neurite outgrowth using GFP-labelled iPSC-derived human neurons, with dose-response imaging.
View DOINeuroToxicology. Describes neurite outgrowth in human iPSC-derived neurons as a high-throughput screen for developmental neurotoxicity or neurotoxicity.
View DOIDisease Models & Mechanisms. A high-throughput screen for compounds that modulate neurite growth of human iPSC-derived neurons.
View DOINeurochemical Research. High-content high-throughput assays for characterising the viability and morphology of human iPSC-derived neuronal cultures.
View DOIInternational Journal of Molecular Sciences. Recent advances in high-content imaging and analysis in iPSC-based modelling of neurodegenerative diseases.
View DOIeNeuro. Using automated live cell imaging to reveal early changes during human motor neuron degeneration, relevant to ALS and other neurodegenerative studies.
View DOIPlatform pages for automated high-content neurite analysis and benchtop live-cell neuronal imaging.
CellInsight CX7 UK EVOS M7000 ReviewA high-content analysis platform such as the CellInsight CX5 or CX7 is ideal for 2D neurite outgrowth screens, because it can acquire multiwell plates and run automated neurite tracing and branching analysis. For live, longitudinal tracking of the same iPSC-derived neurons, a benchtop inverted system with onstage incubation such as the EVOS M7000 is more practical.
Neurite outgrowth is usually imaged by fluorescence microscopy using β-III-tubulin or MAP2 immunostaining, GFP-labelled neurons, or live-cell markers. Automated image-analysis software then traces neurites, counts branches, calculates total neurite length per cell, and classifies Sholl profiles.
Yes. CellInsight CX7 with neurite analysis algorithms can identify cell bodies, trace neurites, measure total neurite length and branching, and report population statistics across 96- or 384-well plates.
Benchtop widefield systems can image thin 2.5D matrices but do not deliver true confocal-like 3D resolution. For dense 3D organoids or thick hydrogels, a confocal spinning-disk or light-sheet system with optical sectioning is usually needed, although CellInsight CX7 can handle transwell or thin-gel formats.
Common markers are β-III-tubulin (Tuj1), MAP2 for mature dendrites, neurofilament heavy chain (NF-H) or Tau for axonal morphology, and genetically encoded GFP or mApple under neuronal promoters. Live dyes such as CellMask can provide membrane context.
EVOS M7000 is a benchtop inverted fluorescence microscope with LED illumination and optional onstage incubator. It is useful for pilot assays, hit validation, time-lapse movies of the same neurons, and labs that do not need full HCA throughput.