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Resolving early embryonic metabolism in Drosophila through single-embryo metabolomics and transcriptomics
J Eduardo Pérez-Mojica1, Zachary B Madaj2, Christine Isaguirre3
1Department of Metabolism and Nutritional Programming, Van Andel Institute, Grand Rapids, MI, USA.
Nature Metabolism
|August 13, 2025
Summary
The maternal-to-zygotic transition involves both gene expression and metabolic changes. This study reveals new metabolic shifts and their limited coupling with gene activity during early Drosophila development.
Area of Science:
- Developmental Biology
- Metabolomics
- Systems Biology
Background:
- Early embryonic development relies on maternal factors before zygotic gene activation.
- Transcriptional regulation during this maternal-to-zygotic transition is known, but metabolic changes are poorly understood.
- Technical challenges limit analysis of small embryonic samples and rapid developmental timing.
Purpose of the Study:
- To characterize concurrent metabolic and transcriptional dynamics during the initial hours of Drosophila development.
- To investigate the relationship between metabolic shifts and gene expression programs.
- To provide a framework for studying metabolic regulation in early development.
Main Methods:
- Generation of a high-resolution, single-embryo multi-omics dataset.
- Profiling of transcriptional and metabolic profiles from individual Drosophila embryos.
- Integration of metabolite and transcriptomic data to identify functional couplings.
Main Results:
- Uncovered stage-specific transcriptional and metabolic programs during the first 3 hours of development.
- Identified previously unrecognized transitions in nucleotides, amino acids, and other metabolites.
- Revealed limited but selective functional coupling between metabolic pathways and gene expression modules.
Conclusions:
- The maternal-to-zygotic transition is a coordinated handoff of both transcriptional and metabolic control.
- This study provides a comprehensive resource for understanding metabolic regulation during early development.
- The findings offer a new perspective on the interplay between metabolism and gene expression in developmental processes.
