Deciphering the Early Mouse Embryo Transcriptome by Low-Input RNA-Seq.

Area of Science:

• Developmental Biology
• Genomics
• Molecular Biology

Background:

• Early preimplantation embryos are scarce and contain few cells, posing challenges for accurate gene expression analysis.
• Quantitative gene expression studies require sensitive methods capable of analyzing minute biological samples.

Purpose of the Study:

• To present a comprehensive single-cell/single-embryo RNA sequencing (RNA-seq) method.
• To provide detailed protocols for embryo collection, sample validation, and quality control for low-input RNA analysis.

Main Methods:

• Description of a single-cell/single-embryo RNA sequencing (RNA-seq) workflow.
• Inclusion of critical quality control measures and external Spike-In normalization strategies.
• Detailed steps from embryo collection to pre-sequencing library preparation.

Main Results:

• The described method facilitates gene expression profiling from limited embryonic samples.
• Quality control and normalization approaches ensure reliable RNA sequencing data.
• The protocol is optimized for single blastomere or single embryo analysis.

Conclusions:

• This RNA sequencing method enables precise gene expression analysis in precious and scarce early embryonic samples.
• The detailed protocol and quality controls support the standardization of single-cell/single-embryo RNA analysis.
• The approach is valuable for advancing research in developmental biology and reproductive medicine.