Joint profiling of histone modifications and transcriptome in single cells from mouse brain

Area of Science:

• Genomics
• Epigenetics
• Neuroscience

Background:

• Histone modifications are crucial for regulating gene expression and understanding cellular function.
• Existing methods for profiling histone modifications lack single-cell resolution, limiting insights into complex tissues.
• Cell-type-specific gene expression is vital in development and disease pathology.

Purpose of the Study:

• To introduce Paired-Tag, an ultra-high-throughput method for simultaneous profiling of histone modifications and transcriptomes in single cells.
• To generate cell-type-resolved maps of chromatin state and transcriptome in complex biological systems.
• To enable comprehensive analysis of gene regulatory programs within individual cell types.

Main Methods:

• Development of the Paired-Tag ultra-high-throughput assay.
• Joint profiling of five histone modifications and transcriptome in single cells.
• Application of the method to adult mouse frontal cortex and hippocampus tissues.

Main Results:

• Successful generation of single-cell resolution maps of chromatin state and transcriptome.
• Identification of distinct gene groups regulated by divergent epigenetic mechanisms.
• Demonstration of the method's capability in complex tissue analysis.

Conclusions:

• The Paired-Tag method provides unprecedented single-cell resolution for multiomic profiling.
• This approach facilitates a deeper understanding of cell-type-specific epigenetic regulation.
• Enables comprehensive characterization of gene regulatory programs in complex tissues.