Related Experiment Video
Updated: May 28, 2026
11:52
Temporal Ordering of Dynamic Expression Data from Detailed Spatial Expression Maps
Published on: February 9, 2017
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, USA.
Current Biology : CB
|May 26, 2026
Summary
Cells integrate Bone Morphogenetic Protein (BMP) signaling over time to accurately interpret dynamic gradients during Drosophila development. This temporal integration, aided by the transcription factor Zen, ensures robust pattern formation on rapid developmental timescales.
Area of Science:
- Developmental biology
- Cell signaling
- Genetics
Background:
- Cells interpret extracellular signals for accurate development.
- Morphogen gradients pattern tissues, but responses to dynamic gradients are unclear.
Purpose of the Study:
- Investigate how dorsal patterning in Drosophila is specified by a rapidly evolving BMP gradient.
- Determine if gene expression is predicted by instantaneous BMP levels or time-integrated signaling.
Main Methods:
- Utilized live reporters for BMP pathway activity and nascent transcription.
- Developed and tested a temporal integration model for BMP signaling.
- Analyzed mutants altering BMP signaling dynamics.
Main Results:
- Gene expression is best predicted by time integration of BMP signaling, not instantaneous levels.
- The transcription factor Zen lowers the signaling threshold, enabling rapid transcriptional responses.
- Integration model predicted gene expression within normal domains, but required higher integrated signaling laterally.
Conclusions:
- Drosophila cells interpret dynamic morphogen signals via temporal integration and spatial competence.
- This framework explains robust pattern formation during rapid developmental processes.
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