Suppression of SPARC expression by antisense RNA abrogates the tumorigenicity of human melanoma cells

Related Experiment Video

Updated: Jul 5, 2026

Spatial and Temporal Control of Murine Melanoma Initiation from Mutant Melanocyte Stem Cells
06:09

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

Published on: June 7, 2019

M F Ledda1, S Adris, A I Bravo

  • 1Instituto de Investigaciones Bioquimicas, Fundacion Campomar, Buenos Aires, Argentina.

Nature Medicine
|February 1, 1997
PubMed

Insights

Secreted protein acidic rich in cysteine (SPARC) suppression significantly reduced melanoma cell adhesion, invasion, and tumorigenicity. This study highlights SPARC

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Tumor progression involves acquiring invasive and metastatic potential.
  • Cell surface glycoproteins and matrix ligands are implicated in metastasis.
  • Secreted protein acidic and rich in cysteine (SPARC) is upregulated in malignant tissues.

Purpose of the Study:

  • To investigate the role of SPARC in human melanoma.
  • To determine if SPARC influences melanoma cell adhesion, invasion, and tumorigenicity.

Main Methods:

  • Utilized a SPARC antisense expression vector to suppress SPARC expression in human melanoma cells.
  • Assessed in vitro adhesive and invasive capacities.
  • Evaluated in vivo tumorigenicity.

Main Results:

  • Suppression of SPARC expression led to a significant decrease in melanoma cell adhesion and invasion in vitro.
  • SPARC suppression completely abolished the in vivo tumorigenicity of human melanoma cells.
  • Demonstrated a direct correlation between SPARC expression and melanoma's invasive-metastatic phenotype.

Conclusions:

  • SPARC plays a critical role in the development of the invasive-metastatic phenotype in human melanoma.
  • Targeting SPARC may represent a novel therapeutic strategy for melanoma.
  • This study provides the first evidence of SPARC's key function in melanoma metastasis.

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