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Updated: Oct 18, 2025

Spatial and Temporal Control of Murine Melanoma Initiation from Mutant Melanocyte Stem Cells
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Published on: June 7, 2019

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Epigenetic Silencing of BMP6 by the SIN3A-HDAC1/2 Repressor Complex Drives Melanoma Metastasis via FAM83G/PAWS1

Dongkook Min1, Jaemin Byun1, Eun-Joon Lee1

  • 1Center for Discovery and Innovation, Hackensack University Medical Center, Nutley, New Jersey.

Molecular Cancer Research : MCR
|October 6, 2021
PubMed

Insights

Aberrant epigenetic regulation by the SIN3A-HDAC1/2 complex drives melanoma metastasis by silencing BMP6. Inhibiting this complex reduces tumor spread and growth, offering a potential therapeutic strategy.

Area of Science:

  • Epigenetics
  • Cancer Biology
  • Molecular Oncology

Background:

  • Aberrant epigenetic transcriptional regulation is a key driver of cancer metastasis.
  • Understanding epigenetic mechanisms is crucial for identifying therapeutic targets in cancer progression.

Purpose of the Study:

  • To investigate the role of the SIN3A-HDAC1/2 complex in melanoma metastasis.
  • To identify novel molecular targets for blocking cancer metastatic dissemination.

Main Methods:

  • Utilized a mouse model of melanoma metastasis.
  • Investigated the SIN3A-HDAC1/2 complex's regulation of BMP6 expression and SMAD5 signaling.
  • Examined the role of FAM83G/PAWS1 in cytoskeletal dynamics and cell migration.

Main Results:

  • The SIN3A-HDAC1/2 complex silences BMP6, promoting metastatic dissemination and tumor growth via SMAD5 signaling suppression.
  • FAM83G/PAWS1, a BMP6-SMAD5 effector, is critical for metastatic progression by enhancing cell migration.
  • Pharmacologic inhibition of SIN3A-HDAC1/2 reduced circulating melanoma cells and inhibited tumor growth by inducing dormancy.

Conclusions:

  • The SIN3A-HDAC1/2 complex and FAM83G/PAWS1 are critical regulators of melanoma metastasis.
  • Targeting the SIN3A-HDAC1/2 complex offers a potential therapeutic strategy for melanoma adjuvant therapy by affecting cytoskeletal dynamics.

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