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Updated: Dec 10, 2025

Monitoring Hippo Signaling Pathway Activity Using a Luciferase-based Large Tumor Suppressor LATS Biosensor
Published on: September 13, 2018
Interaction of the Hippo Pathway and Phosphatases in Tumorigenesis
Sahar Sarmasti Emami1, Derek Zhang1, Xiaolong Yang1
1Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON K7L 3N6, Canada.
Abstract:
The Hippo pathway is an emerging tumor suppressor signaling pathway involved in a wide range of cellular processes. Dysregulation of different components of the Hippo signaling pathway is associated with a number of diseases including cancer. Therefore, identification of the Hippo pathway regulators and the underlying mechanism of its regulation may be useful to uncover new therapeutics for cancer therapy. The Hippo signaling pathway includes a set of kinases that phosphorylate different proteins in order to phosphorylate and inactivate its main downstream effectors, YAP and TAZ. Thus, modulating phosphorylation and dephosphorylation of the Hippo components by kinases and phosphatases play critical roles in the regulation of the signaling pathway. While information regarding kinase regulation of the Hippo pathway is abundant, the role of phosphatases in regulating this pathway is just beginning to be understood. In this review, we summarize the most recent reports on the interaction of phosphatases and the Hippo pathway in tumorigenesis. We have also introduced challenges in clarifying the role of phosphatases in the Hippo pathway and future direction of crosstalk between phosphatases and the Hippo pathway.
Insights
The Hippo pathway, crucial for cell processes, is regulated by kinases and phosphatases. Understanding phosphatase roles in Hippo signaling is key for developing new cancer therapies.
Area of Science:
- Cellular signaling pathways
- Molecular biology
- Cancer research
Background:
- The Hippo pathway is a critical tumor suppressor pathway regulating cell proliferation and organ size.
- Dysregulation of the Hippo pathway is implicated in various diseases, notably cancer.
- Kinase regulation of the Hippo pathway is well-documented, but phosphatase involvement is less understood.
Purpose of the Study:
- To review recent findings on phosphatases regulating the Hippo pathway in tumorigenesis.
- To highlight challenges in elucidating phosphatase roles within the Hippo pathway.
- To outline future research directions for phosphatase-Hippo pathway crosstalk.
Main Methods:
- Literature review of recent scientific reports.
- Synthesis of current knowledge on phosphatase interactions with the Hippo pathway.
- Analysis of challenges and future prospects in the field.
Main Results:
- Phosphatases play a significant, yet underappreciated, role in modulating Hippo pathway activity.
- Specific phosphatases are emerging as key regulators of YAP/TAZ, the Hippo pathway's downstream effectors.
- The interplay between phosphatases and the Hippo pathway presents novel therapeutic targets for cancer.
Conclusions:
- Phosphatases are critical regulators of the Hippo signaling pathway and its role in cancer.
- Further research into phosphatase-mediated regulation of the Hippo pathway is essential for advancing cancer therapeutics.
- Clarifying the complex crosstalk between phosphatases and the Hippo pathway will unlock new treatment strategies.
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