Protocol for differential multi-omic analyses of distinct cell types in the mouse cerebral cortex

Area of Science:

• Neuroscience
• Developmental Biology
• Genomics & Proteomics

Background:

• Understanding cell-type-specific molecular changes is crucial for studying brain development.
• Existing methods may not efficiently isolate and analyze distinct cell populations from the developing cerebral cortex.

Purpose of the Study:

• To present a comprehensive protocol for differential multi-omic analyses of distinct cell types in the developing mouse cerebral cortex.
• To enable comparisons of proteomes and transcriptomes in specific cortical cell populations following experimental manipulations.

Main Methods:

• In utero electroporation for cell labeling.
• Flow-cytometry-based isolation of specific developing mouse cortical cells.
• Bulk RNA sequencing and quantitative liquid chromatography-tandem mass spectrometry (LC-MS/MS) for multi-omic data generation.
• Bioinformatic analyses for differential expression analysis.

Main Results:

• The protocol successfully integrates cell isolation with high-throughput sequencing and mass spectrometry.
• It allows for the generation of both transcriptomic and proteomic data from defined cell populations.
• Demonstrates applicability for comparing molecular profiles after epigenetic modifications.

Conclusions:

• This protocol provides a robust framework for multi-omic analysis of distinct cell types during cortical development.
• It facilitates the investigation of cell-type-specific molecular mechanisms underlying brain development and disease.
• The method is adaptable for various experimental manipulations, enhancing its utility in neuroscience research.