microRNAs Regulating Human and Mouse Naïve Pluripotency

Area of Science:

• Developmental Biology
• Epigenetics
• Molecular Biology

Background:

• MicroRNAs (miRNAs) are non-coding RNAs regulating gene expression post-transcriptionally.
• miRNAs are critical for cell fate decisions, including pluripotency transitions and embryonic diapause.
• The role of miRNAs in human and mouse pluripotency and diapause requires further exploration.

Purpose of the Study:

• To identify conserved microRNAs and their target genes involved in naïve to primed pluripotency transitions.
• To investigate microRNAs and target genes associated with the embryonic diapause state.
• To provide a comprehensive resource for miRNA regulation in early development.

Main Methods:

• Meta-analysis of microRNA-seq, RNA-seq, and metabolomics datasets from human and mouse.
• Identification of microRNAs and experimentally validated target genes with consistent expression changes.
• Analysis of regulated pathways, including developmental signaling, primary cilia, and metabolic processes.

Main Results:

• Identified conserved microRNAs and target genes showing reciprocal expression changes during naïve to primed pluripotency transitions.
• Found 115 microRNAs consistently altered in human and mouse pluripotency transitions, including novel candidates.
• Discovered 38 microRNAs and 274 target genes potentially involved in embryonic diapause, suggesting miRNA-mediated stress response activation.

Conclusions:

• This study provides a comprehensive resource of microRNAs and their targets regulating pluripotency and diapause.
• Conserved microRNA regulatory networks are critical for key developmental transitions in mammalian embryos.
• Identified novel microRNAs as potential regulators of pluripotency and embryonic developmental arrest.