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Published on: February 8, 2020

IMP1 promotes choriocarcinoma cell migration and invasion through the novel effectors RSK2 and PPME1

Yeun-Ting Hsieh1, Min-Min Chou, Hong-Chen Chen

  • 1Department of Life Science, National Chung-Hsing University, 250 Kou-Kuang Rd, Taichung 40227, Taiwan; Department of Obstetrics and Gynecology, Taichung Veterans General Hospital, 1650, Sec. 4, Taiwan Boulevard, Taichung 40705, Taiwan.

Gynecologic Oncology
|August 6, 2013
PubMed
Abstract

Insights

Insulin-like growth factor II mRNA-binding protein 1 (IMP1) drives choriocarcinoma cell migration and invasion. IMP1 regulates RSK2 and PPME1, key factors in these cellular processes.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • Oncofetal protein IMP1 is expressed in various cancers, including choriocarcinoma (CC).
  • IMP1 regulates cellular proliferation and migration, but its precise role in CC is unclear.

Purpose of the Study:

  • To investigate the regulatory mechanism of IMP1 in choriocarcinoma (CC) JAR cells.
  • To identify downstream targets of IMP1 involved in CC cell functions.

Main Methods:

  • Immunohistochemistry to assess IMP1 levels in CC tissues.
  • siRNA-mediated knockdown of IMP1 in JAR cells.
  • Wound-healing and Matrigel assays for migration and invasion.
  • Microarray, RNA immunoprecipitation, RT-qPCR, RT-PCR, and Western blotting to identify and validate IMP1 targets.

Main Results:

  • High IMP1 expression correlated with CC.
  • IMP1 knockdown inhibited JAR cell migration and invasion but not proliferation.
  • IMP1 regulates the expression of RSK2 and PPME1.
  • Downregulation of RSK2 or PPME1 mimicked IMP1 depletion effects on migration and invasion.

Conclusions:

  • IMP1 is crucial for choriocarcinoma cell migration and invasion.
  • RSK2 and PPME1 are novel downstream effectors of IMP1 in CC.
  • Targeting IMP1 may offer a therapeutic strategy for choriocarcinoma.
Keywords:
ChoriocarcinomaIMP1InvasionMigration

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