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Updated: Dec 9, 2025

Spatial and Temporal Control of Murine Melanoma Initiation from Mutant Melanocyte Stem Cells
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Spatial and Temporal Control of Murine Melanoma Initiation from Mutant Melanocyte Stem Cells

Published on: June 7, 2019

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ADAR1 regulates melanoma cell invasiveness by controlling beta3-integrin via microRNA-30 family members

Yael Nemlich1, Michal J Besser1,2, Jacob Schachter1,3

  • 1Ella Lemelbaum Institute for Immuno-Oncology Israel.

American Journal of Cancer Research
|September 9, 2020
PubMed

Insights

The RNA editing enzyme ADAR1 (adenosine deaminase acting on RNA) regulates melanoma cell invasion by controlling ITGB3 expression through miR-30a and miR-30d. This discovery offers new insights into melanoma metastasis.

Area of Science:

  • Oncology
  • Molecular Biology
  • RNA Biology

Background:

  • Metastatic melanoma cells exhibit complex invasion mechanisms.
  • Adenosine deaminase acting on RNA (ADAR1) expression is reduced in metastatic melanoma, correlating with increased proliferation and invasion.

Purpose of the Study:

  • To elucidate the role of ADAR1 in controlling melanoma cell invasiveness.
  • To investigate the regulatory pathway involving ADAR1, microRNAs, and ITGB3 in melanoma metastasis.

Main Methods:

  • Investigated the effect of ADAR1 overexpression and knockdown on microRNA expression.
  • Utilized dual luciferase assays to confirm direct interaction between microRNAs and ITGB3.
  • Assessed the impact of microRNA modulation on ITGB3 levels and melanoma cell invasiveness.

Main Results:

  • ADAR1 influences the expression of miR-30a and miR-30d, independent of its RNA-editing activity.
  • Both miR-30a and miR-30d directly target and downregulate ITGB3 (integrin beta 3) expression.
  • Modulating miR-30a/30d levels altered ITGB3 expression and consequently affected melanoma cell invasion and metastasis.

Conclusions:

  • ADAR1 plays a critical role in regulating melanoma invasiveness by modulating the miR-30a/miR-30d-ITGB3 axis.
  • This pathway represents a significant mechanism in the acquisition of the invasive phenotype in metastatic melanoma.
  • Findings expand understanding of the ADAR1-ITGB3 network in melanoma progression.
Keywords:
ITGB3MelanomaRNA editingintegrininvasionmetastasis

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