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  4. Snail regulates Hippo signalling-mediated cell proliferation and tissue growth in Drosophila

Snail regulates Hippo signalling-mediated cell proliferation and tissue growth in Drosophila

Open Biol., 2022 · DOI: https://doi.org/10.1098/rsob.210357 · Published: February 9, 2022

Genetics

Simple Explanation

This study uses Drosophila to understand Snail's role in tissue development, specifically how it affects cell growth and proliferation through the Hippo signaling pathway. The research shows that Snail is important for cell proliferation and tissue overgrowth caused by impaired Hippo signaling. It also demonstrates Snail's role in the expression of Hippo pathway target genes. The study finds that Snail works with a protein called Scalloped (Sd) to promote cell proliferation. In essence, Yorkie (Yki) activates Snail, which then binds to Sd to facilitate cell growth.

Study Duration
Not specified
Participants
Drosophila
Evidence Level
Not specified

Key Findings

  • 1
    Snail is necessary and sufficient for impaired Hippo signalling-induced cell proliferation and tissue overgrowth.
  • 2
    Snail acts downstream of Yki in the Hippo signaling pathway, promoting the expression of target genes.
  • 3
    Snail physically interacts with Scalloped (Sd) and promotes Sd-dependent cell proliferation, contributing to tissue growth in normal development.

Research Summary

This study identifies Snail (Sna) as a crucial modulator of Hippo signalling-mediated tissue growth in Drosophila development. Loss of sna inhibits, while overexpression of Sna promotes, Hippo signalling-mediated cell proliferation and tissue growth. Mechanistically, Yki activates sna transcription, while elevated Sna binds to Sd and promotes Sd-dependent cell proliferation.

Practical Implications

Understanding Tissue Growth

The study sheds light on the mechanisms controlling tissue and organ size during development.

Cancer Research

Insights into the interplay between Snail and Hippo signaling may provide a better understanding of tumor progression.

Therapeutic Targets

Identifying Snail as a key regulator in the Hippo pathway opens potential avenues for therapeutic interventions in diseases involving abnormal tissue growth or cell proliferation.

Study Limitations

  • 1
    The study is limited to Drosophila, and the findings may not be directly transferable to other organisms.
  • 2
    The precise mechanisms of Snail's interaction with Scalloped (Sd) require further investigation.
  • 3
    The study does not fully elucidate the context-dependent manner in which Snail family members may regulate Hippo-Yki signaling.

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