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A Web Tool for Generating High Quality Machine-readable Biological Pathways

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Filling out the Hippo pathway.

Leslie J Saucedo¹, Bruce A Edgar

¹Department of Biology, University of Puget Sound, 1500 North Warner Street, Tacoma, Washington 98416, USA. lsaucedo@ups.edu

Nature Reviews. Molecular Cell Biology

|July 12, 2007

Summary

The Hippo pathway restrains cell proliferation and promotes apoptosis during development. Mutations in this pathway lead to uncontrolled cell growth, similar to cancer, and Hippo pathway components may act as tumor suppressors in humans.

Area of Science:

Developmental biology
Cell signaling
Cancer biology

Background:

Organ development relies on precise control of cell numbers.
The Hippo pathway is a novel signaling pathway identified in Drosophila melanogaster.
This pathway regulates cell proliferation and apoptosis in epithelial cells.

Purpose of the Study:

To summarize the role of the Hippo pathway in controlling cell numbers during organ development.
To highlight the implications of Hippo pathway mutations in cancer-like proliferation.
To discuss the potential tumor suppressor functions of mammalian Hippo pathway components.

Main Methods:

Studies in Drosophila melanogaster.
Analysis of genetically mosaic tissues.

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Comparative analysis of Hippo pathway components in mammals and humans.

Main Results:

The Hippo pathway restrains cell proliferation and promotes apoptosis.
Mutations in the Hippo pathway lead to inappropriate cell proliferation.
Mutated cells exhibit a competitive advantage in mosaic tissues.
Mammalian Hippo pathway components show potential tumor suppressor activity.

Conclusions:

The Hippo pathway is crucial for regulating organ size by controlling cell proliferation and apoptosis.
Dysregulation of the Hippo pathway contributes to uncontrolled cell growth, mirroring cancer.
Further research into mammalian Hippo pathway components may reveal new therapeutic targets for cancer treatment.