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Growth control: Myc and Yorkie get connected
1Institute of Molecular Systems Biology, ETH Zurich, Wolfgang-Pauli-Strasse 16, CH-8093 Zurich, Switzerland. stocker@imsb.biol.ethz.ch
Current Biology : CB
|January 11, 2011
Summary
The Hippo pathway regulates Yorkie, a protein that drives cell growth by promoting Myc transcription. Myc, in turn, limits Yorkie levels through negative feedback, revealing a crucial regulatory loop in cell growth.
Area of Science:
- Cell biology
- Molecular biology
- Oncology
Background:
- The Hippo tumor suppressor pathway regulates organ size.
- Yorkie is a transcriptional coactivator.
- Proto-oncogene Myc is critical for cell growth and proliferation.
Purpose of the Study:
- To elucidate the regulatory relationship between Yorkie and Myc.
- To understand the role of this interaction in cell growth.
Main Methods:
- Investigated transcriptional regulation.
- Analyzed protein-protein interactions.
- Utilized genetic manipulation techniques.
Main Results:
- Yorkie promotes Myc transcription, driving cell growth.
- Myc is necessary for Yorkie to promote growth.
- Myc establishes negative feedback on Yorkie concentration.
Conclusions:
- Yorkie and Myc form a critical regulatory axis for cell growth.
- This feedback loop is essential for controlling cell proliferation.
- Dysregulation of this pathway may contribute to oncogenesis.
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