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JNK signaling controls border cell cluster integrity and collective cell migration
Flora Llense1, Enrique Martín-Blanco
1Instituto de Biología Molecular de Barcelona, Consejo Superior de Investigaciones Científicas, Parc Cientific de Barcelona, Baldiri Reixac 10, Barcelona 08028, Spain.
Current Biology : CB
|April 9, 2008
Summary
A negative-feedback loop controlling c-Jun N-terminal kinase (JNK) activity maintains border cell cluster integrity during collective cell migration in Drosophila. This pathway regulates cell-cell and cell-substratum contacts, crucial for developmental processes.
Area of Science:
- Cell Biology
- Developmental Biology
- Genetics
Background:
- Collective cell movement is essential for development and disease, such as tumor metastasis.
- The Drosophila border cell migration model is widely used to study collective cell migration.
- Mechanisms maintaining border cell cluster integrity during migration are largely unknown.
Purpose of the Study:
- To investigate the molecular mechanisms regulating border cell cluster integrity during collective cell migration.
- To identify signaling pathways involved in maintaining cell-cell adhesion and substratum interactions.
Main Methods:
- Utilized the Drosophila border cell migration assay.
- Investigated the role of JNK signaling pathway in regulating cell adhesion and migration.
- Analyzed the function of polarity factors Bazooka and D-Paxillin.
Main Results:
- Identified a negative-feedback loop involving JNK signaling that regulates border cell cluster integrity.
- Demonstrated that JNK signaling modulates cell-cell and cell-substratum contacts.
- Showed that JNK signaling regulates effectors like Bazooka and D-Paxillin.
Conclusions:
- JNK signaling is a key regulator of border cell cluster integrity and collective cell migration.
- The findings provide insights into the mechanisms of collective cell movement relevant to development and disease.
- Anticipate a role for JNK in other collective cell migration models.
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