Related Experiment Video

Updated: Dec 12, 2025

Monitoring Hippo Signaling Pathway Activity Using a Luciferase-based Large Tumor Suppressor LATS Biosensor
07:16

Monitoring Hippo Signaling Pathway Activity Using a Luciferase-based Large Tumor Suppressor LATS Biosensor

Published on: September 13, 2018

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RNA-binding protein Musashi2 regulates Hippo signaling via SAV1 and MOB1 in pancreatic cancer

Haiyan Yang1,2, Jiong Hu1,2, Jingde Chen3

  • 1Department of Medical Oncology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.

Medical Oncology (Northwood, London, England)
|August 12, 2020
PubMed

Insights

Musashi 2 (MSI2) promotes pancreatic cancer progression by suppressing SAV1 and MOB1. This oncoprotein disrupts the Hippo signaling pathway at a post-transcriptional level, driving tumor growth and metastasis.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Musashi 2 (MSI2) is implicated as an oncoprotein in pancreatic ductal adenocarcinoma (PDAC).
  • The precise mechanisms by which MSI2 drives PDAC development and progression remain incompletely understood.
  • Understanding MSI2's role is crucial for developing targeted therapies for PDAC.

Purpose of the Study:

  • To investigate the clinical significance of MSI2 in PDAC.
  • To elucidate the biological effects of MSI2 on PDAC cell behavior.
  • To uncover the underlying molecular mechanisms of MSI2 in PDAC progression, focusing on the Hippo signaling pathway.

Main Methods:

  • Immunohistochemical analysis of MSI2, MOB1, and SAV1 expression in PDAC tissues.
  • Gain- and loss-of-function assays to assess MSI2's impact on PDAC cell proliferation, migration, and invasion.
  • Molecular biology techniques to investigate MSI2's regulation of the Hippo signaling pathway via SAV1 and MOB1.

Main Results:

  • MSI2 expression is significantly elevated in PDAC cell lines and tissues.
  • Increased MSI2 correlates with poorer tumor differentiation, lymph node metastasis, and advanced TNM stages.
  • MSI2 overexpression enhances PDAC cell proliferation, migration, and invasion.

Conclusions:

  • MSI2 directly binds to SAV1 and MOB1 mRNAs, suppressing their translation and stability at the post-transcriptional level.
  • MSI2 dysregulates the Hippo signaling pathway by inhibiting SAV1 and MOB1, thereby promoting PDAC progression.
  • Targeting MSI2 may offer a therapeutic strategy for pancreatic cancer.
Keywords:
Hippo-signaling pathwayMOB1Musashi2Pancreatic cancerSAV1

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