A scalable platform for the development of cell-type-specific viral drivers

Area of Science:

• Genomics
• Neuroscience
• Molecular Biology

Background:

• DNA regulatory elements called enhancers control cell-type-specific gene expression.
• Current methods cannot systematically identify and test enhancers for every cell type.

Purpose of the Study:

• To develop a scalable method for identifying cell-type-specific enhancers.
• To enable genetic access and functional manipulation of specific cell types.

Main Methods:

• Developed PESCA (Promoter/Enhancer Specificity Characterization and Analysis) platform.
• Leveraged ATAC-sequencing and single-cell RNA-sequencing.
• Applied PESCA to the mammalian cerebral cortex.

Main Results:

• Identified cell-type-specific enhancers in the cerebral cortex.
• Generated viral reagents for specific targeting of somatostatin-expressing interneurons.
• Demonstrated high specificity in accessing and manipulating target neurons.

Conclusions:

• PESCA is a scalable and generalizable platform for enhancer discovery.
• The developed viral reagents facilitate cell-type-specific genetic manipulation.
• This approach has significant implications for basic and translational neuroscience research.