An Improved, High-Yield Method for Isolating Nuclei from Individual Zebrafish Embryos for Single-Nucleus RNA...

Area of Science:

• Developmental Biology
• Genomics
• Biotechnology

Background:

• Zebrafish are valuable models for studying development due to rapid growth and high fertility.
• Single-cell sequencing is crucial for analyzing developmental responses to various perturbations.
• Efficient nuclei isolation from numerous zebrafish embryos is essential for large-scale single-cell experiments.

Purpose of the Study:

• To present an improved method for isolating high-quality nuclei from zebrafish embryos.
• To enable parallel processing of individually barcoded embryos for single-cell sequencing.
• To optimize nuclei isolation for compatibility with diverse developmental stages.

Main Methods:

• Nuclei isolation using bead homogenization in a lysis buffer within a 96-well plate format.
• Single-cell combinatorial indexing RNA sequencing (sci-RNA-seq) for comparative analysis.
• Validation across a range of zebrafish developmental stages.

Main Results:

• The bead homogenization method efficiently isolates high-quality nuclei from zebrafish embryos.
• This technique significantly outperforms traditional enzymatic dissociation methods.
• The protocol is robust and applicable to various developmental time points.

Conclusions:

• Bead homogenization offers a superior approach for nuclei isolation in zebrafish developmental studies.
• This method enhances the scalability and efficiency of single-cell RNA sequencing.
• It supports comprehensive analysis of genetic, chemical, and environmental impacts on zebrafish development.