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Updated: Sep 15, 2025
11:52
Temporal Ordering of Dynamic Expression Data from Detailed Spatial Expression Maps
Published on: February 9, 2017
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Rapid transcriptional response to a dynamic morphogen by time integration.
Susanna E Brantley1, Jacqueline Janssen2, Anna Chao1
1Department of Cell Biology and Duke Center for Quantitative Living Systems, Duke University Medical Center, Durham 27705, United States.
Biorxiv : the Preprint Server for Biology
|July 15, 2025
Summary
Cells integrate Bone Morphogenetic Protein (BMP) signals over time for accurate development. Spatial competence, via transcription factor Zen, refines this response to ensure proper dorsal patterning in Drosophila embryos.
Area of Science:
- Developmental biology
- Cell signaling
- Genetics
Background:
- Morphogen gradients are crucial for embryonic patterning.
- Understanding cellular responses to dynamic signaling is essential for development.
Purpose of the Study:
- Investigate how dorsal patterning in Drosophila is controlled by a dynamic BMP gradient.
- Determine the mechanisms cells use to interpret rapidly changing morphogen signals.
Main Methods:
- Utilized live reporters for BMP pathway activity and nascent transcription.
- Analyzed gene expression patterns in wild-type and sog mutant Drosophila embryos.
Main Results:
- Gene expression correlates with the time integration of BMP signaling, not just instantaneous levels.
- In sog mutants, temporal integration alone does not explain gene expression outside the normal domain.
- Transcription factor Zen lowers the BMP signaling threshold, enabling integration at low signal levels.
Conclusions:
- Drosophila cells interpret dynamic morphogen signals through temporal integration and spatial competence.
- This combined mechanism ensures robust pattern formation during rapid developmental processes.
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