INTACT vs. FANS for Cell-Type-Specific Nuclei Sorting: A Comprehensive Qualitative and Quantitative Comparison.

Area of Science:

• Cellular and Molecular Biology
• Neuroscience
• Genomics

Background:

• Characterizing diverse cellular subtypes in mammalian tissues is crucial for biological research.
• Isolation of Nuclei Tagged in Specific Cell Types (INTACT) and Fluorescence-Activated Nuclei Sorting (FANS) are common methods for isolating specific cell nuclei for molecular analysis.

Purpose of the Study:

• To comprehensively compare the INTACT and FANS techniques for isolating specific cell nuclei.
• To evaluate the efficiency, physical attributes, and molecular consequences of nuclei isolation using INTACT versus FANS.

Main Methods:

• sfGFP+ nuclei were isolated from mouse neocortex using both INTACT and FANS.
• Isolated nuclei were analyzed for physical properties (size) and molecular profiles (RNA-seq, ATAC-seq).

Main Results:

• Significant differences were observed in the efficiency of sfGFP+ nuclei isolation between INTACT and FANS.
• Nuclear size varied between the two isolation methods.
• Distinct transcriptional (RNA-seq) and chromatin accessibility (ATAC-seq) states were identified based on the isolation technique.

Conclusions:

• INTACT and FANS exhibit different strengths and weaknesses for nuclei isolation.
• The choice between INTACT and FANS depends on specific experimental goals and desired molecular readouts.
• A summary table is provided to guide researchers in selecting the optimal nuclei isolation method.