Sparse Labeling, Rapid Clearing, and Native Fluorescence Light Sheet Imaging in the Developing Rodent Cerebellum.

Area of Science:

• Neuroscience
• Developmental Biology
• Microscopy

Background:

• Studying the developing cerebellum requires methods to visualize neuronal structure and connectivity in vivo.
• Existing techniques may have limitations in resolution, depth, or preserving native tissue context.

Purpose of the Study:

• To develop and optimize a comprehensive protocol for imaging neuronal development in the rodent cerebellum.
• To enable detailed analysis of neuronal migration, circuit architecture, and connectivity.

Main Methods:

• Plasmid delivery via in utero electroporation.
• Rapid tissue clearing using CUBIC (Clear, Unobtanium, Bond, Immersion, Chemical).
• Light sheet microscopy with optimized endogenous fluorescent protein imaging.

Main Results:

• Successful labeling and imaging of neuronal cells and their projections in the intact developing rodent cerebellum.
• Visualization of neuronal migration patterns and the topographic context of cerebellar circuits.
• Detailed imaging of Purkinje cells and their axonal/dendritic arbors.

Conclusions:

• This integrated technique provides a powerful tool for studying cerebellar development and circuitry.
• It facilitates research into neuronal migration, circuit formation, and connectivity with high fidelity.
• The protocol is particularly valuable for investigating Purkinje cell development and function.