The fragile X mental retardation protein regulates tumor invasiveness-related pathways in melanoma cells

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Updated: Feb 18, 2026

Dissecting Cell-Autonomous Function of Fragile X Mental Retardation Protein in an Auditory Circuit by In Ovo Electroporation
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Dissecting Cell-Autonomous Function of Fragile X Mental Retardation Protein in an Auditory Circuit by In Ovo Electroporation

Published on: July 6, 2022

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Francesca Zalfa1, Vincenzo Panasiti1, Simone Carotti1

  • 1Department of Medicine, Campus Bio-Medico University, via Alvaro del Portillo 21, 00128 Rome, Italy.

Cell Death & Disease
|November 17, 2017
PubMed

Insights

Fragile X mental retardation protein (FMRP) is overexpressed in aggressive human melanoma, correlating with metastasis and poor survival. Reducing FMRP hinders melanoma cell invasion, suggesting FMRP as a potential therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Fragile X mental retardation protein (FMRP) deficiency causes fragile X syndrome, a common intellectual disability.
  • FMRP influences metastasis in breast cancer mouse models.
  • Melanoma is a significant skin cancer with metastatic potential.

Purpose of the Study:

  • To investigate the role of FMRP in human melanoma progression.
  • To determine the correlation between FMRP expression levels and melanoma invasiveness.
  • To explore FMRP as a potential therapeutic target in melanoma.

Main Methods:

  • Analysis of FMRP expression in human melanoma tissues with varying severity.
  • Meta-analysis of The Cancer Genome Atlas (TCGA) melanoma data.
  • Experimental reduction of FMRP in metastatic melanoma cell lines.
  • Next-generation sequencing to identify FMRP-regulated mRNAs.

Main Results:

  • FMRP is overexpressed in human melanomas with high Breslow thickness and Clark level.
  • High FMRP expression correlates with metastatic tissues, relapse risk, and reduced disease-free survival.
  • Reducing FMRP impairs melanoma cell migration, invasion, and adhesion.
  • FMRP regulates numerous mRNAs crucial for melanoma progression.

Conclusions:

  • FMRP levels are associated with the invasive phenotype of melanoma.
  • FMRP plays a significant role in melanoma metastasis.
  • Targeting FMRP may offer novel therapeutic strategies for melanoma.

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