Related Experiment Videos
Selector and signalling molecules cooperate in organ patterning
Jennifer Curtiss1, Georg Halder, Marek Mlodzik
1Department of Molecular, Cell and Developmental Biology, Mt. Sinai School of Medicine, One Gustave L. Levy Place, New York, New York 10029, USA.
Nature Cell Biology
|March 5, 2002
Summary
Generic cell signals trigger specific tissue responses during organogenesis by cooperating with selector genes. This integration occurs at cis-regulatory elements, ensuring precise developmental outcomes.
Area of Science:
- Developmental biology
- Molecular genetics
- Cell signalling
Background:
- Cell signalling is crucial for organogenesis, yet a limited number of signalling molecules mediate diverse inductive interactions.
- Generic signals must elicit specific tissue responses, a mechanism not fully understood.
Purpose of the Study:
- To investigate how generic signalling molecules achieve tissue-specific responses during development.
- To explore the role of selector genes in mediating cell signalling outcomes.
Main Methods:
- Analysis of recent studies in Drosophila melanogaster.
- Investigating the interaction between signalling molecules and selector genes.
- Examining cis-regulatory elements and enhancer activity.
Main Results:
- Signalling molecules cooperate with selector genes to specify body parts and organ types.
- Integration of selector and signalling inputs occurs at cis-regulatory elements.
- Direct binding of selector proteins and signal transducers activates tissue-specific enhancers.
Conclusions:
- Selector genes and signalling pathways collaborate to ensure precise organogenesis.
- Cis-regulatory elements act as crucial integration hubs for developmental cues.
- Autoregulatory enhancers refine selector gene expression for specific developmental patterns.