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SMARCD1 and Its Functional Relevance in SWI/SNF and Cancer

Jerome Pere1, Colin Logie1

  • 1Department of Molecular Biology, Faculty of Science, Radboud Institute for Molecular Life Sciences, Radboud University, 6500 HB Nijmegen, The Netherlands.

International Journal of Molecular Sciences
|June 26, 2026
PubMed

Insights

The SWI/SNF chromatin remodeler family, including SMARCD subunits, is crucial in vertebrates. SMARCD1 plays a significant role in driving cancer proliferation, invasion, and metastasis across various malignancies.

Area of Science:

  • Molecular Biology
  • Genetics
  • Cancer Research

Background:

  • SWI/SNF complexes (BRG1/BRM-associated factor or BAF) are vital ATP-dependent chromatin remodelers with three subtypes: cBAF, PBAF, and ncBAF.
  • Mutations in SWI/SNF subunits occur in approximately 20% of malignancies.
  • SMARCD is a conserved, essential subunit for SWI/SNF complex targeting and stability.

Purpose of the Study:

  • To review the molecular and cellular roles of mammalian SMARCD paralogs.
  • To discuss the roles of SMARCD paralogs in oncogenesis.

Main Methods:

  • Literature review of recent studies on SMARCD paralogs.
  • Analysis of SMARCD paralog expression patterns and functional divergence.
  • Examination of SMARCD paralog roles in cancer, including tumor suppression and oncogenesis.

Main Results:

  • Human SMARCD paralogs (SMARCD1, SMARCD2, SMARCD3) exhibit distinct expression patterns and functional divergence.
  • All SMARCD paralogs have context-dependent roles in cancer, acting as both tumor suppressors and oncogenes.
  • SMARCD1 demonstrates the broadest oncogenic activity, promoting proliferation, invasion, and metastasis in various cancers.

Conclusions:

  • SMARCD paralogs are critical regulators of gene expression and cellular processes.
  • SMARCD1 is a key driver of oncogenesis across multiple cancer types.
  • Understanding SMARCD paralog functions is essential for developing targeted cancer therapies.
Keywords:
SMARCDSWI/SNF complexcancerchromatin remodelling

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