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Extracellular vesicles produced by NFAT3-expressing cells hinder tumor growth and metastatic dissemination

Lívia Cardoso Bueno de Camargo1, Frédéric Guaddachi1, David Bergerat2

  • 1Université de Paris, Research Saint Louis Institute (IRSL), INSERM HIPI U976, F-75010, Paris, France.

Scientific Reports
|June 4, 2020
PubMed

Insights

Extracellular vesicles (EVs) from breast cancer cells expressing NFAT3 can block cancer invasion and metastasis. Overexpressing NFAT3 enhances this anti-tumoral effect, offering a novel therapeutic strategy against cancer spread.

Area of Science:

  • Oncology
  • Cell Biology
  • Nanomedicine

Background:

  • Metastasis is a primary driver of cancer mortality globally.
  • Extracellular vesicles (EVs) are being explored as therapeutic delivery systems.
  • The NFAT3 transcription factor exhibits anti-invasive properties in breast cancer.

Purpose of the Study:

  • To investigate the potential of NFAT3-expressing EVs as a therapeutic tool against cancer invasion and metastasis.
  • To evaluate the efficacy of EVs derived from NFAT3-expressing cells in inhibiting cancer cell aggressiveness.
  • To assess the impact of NFAT3 overexpression in EVs on their anti-tumoral functions.

Main Methods:

  • Generation of extracellular vesicles (EVs) from breast cancer cell lines with varying NFAT3 expression levels.
  • In vitro assessment of EV-mediated inhibition of cancer cell invasion across different cancer types.
  • In vivo evaluation of inhibitory EVs in a mouse breast cancer model to assess tumor growth and metastasis.
  • Analysis of EV effects on cancer cell proliferation and apoptosis, including interactions with macrophages.

Main Results:

  • EVs from poorly invasive, NFAT3-expressing breast cancer cells effectively blocked in vitro invasion of aggressive cancer cells.
  • These EVs, in conjunction with macrophages, inhibited cancer cell proliferation and induced apoptosis.
  • Overexpression of NFAT3 in EV-producing cells amplified the observed anti-invasive and anti-proliferative effects.
  • In vivo studies demonstrated that inhibitory EVs significantly reduced tumor growth and metastasis spreading in a mouse model.

Conclusions:

  • Extracellular vesicles derived from NFAT3-expressing breast cancer cells represent a promising anti-tumoral therapeutic strategy.
  • NFAT3-expressing EVs can effectively inhibit cancer cell invasion, proliferation, and metastasis.
  • This approach offers a novel method for developing targeted therapies to combat cancer dissemination and improve patient outcomes.

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