A robust method to isolate Drosophila fat body nuclei for transcriptomic analysis

Area of Science:

• Molecular Biology
• Genomics
• Developmental Biology

Background:

• Traditional gene expression studies average cellular heterogeneity within tissues.
• Single-cell RNA sequencing (sc-RNAseq) offers higher resolution but requires viable cell suspensions, which are difficult for some tissues.
• The Drosophila fat body, crucial for physiological processes, comprises fragile cells challenging to dissociate for sc-RNAseq.

Purpose of the Study:

• To develop a method for isolating single nuclei from the Drosophila adult fat body for RNA sequencing.
• To enable transcriptomic analysis of individual cells within the fat body tissue.
• To provide an alternative to cell dissociation methods that compromise cell viability.

Main Methods:

• Developed a novel protocol for isolating single nuclei from the Drosophila adult fat body.
• Utilized RNA sequencing on the isolated nuclei.
• Compared the new method with existing nuclei preparation techniques.

Main Results:

• The developed method effectively isolates single fat body nuclei.
• The protocol minimizes mitochondrial contamination.
• Achieved higher transcript capture per nucleus compared to other methods.
• The method is suitable for single-cell nuclei sequencing and potentially bulk RNA sequencing.

Conclusions:

• A robust method for isolating single nuclei from the Drosophila fat body has been established.
• This technique facilitates high-resolution transcriptomic studies of the fat body.
• The method offers a viable alternative for tissues with difficult-to-dissociate cells.